{"id":2204,"date":"2026-04-27T12:25:38","date_gmt":"2026-04-27T12:25:38","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/options-du-modele\/"},"modified":"2026-04-27T12:25:38","modified_gmt":"2026-04-27T12:25:38","slug":"options-du-modele","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/options-du-modele\/","title":{"rendered":"Options du mod\u00e8le"},"content":{"rendered":"<div><span class=\"colour\">Les options utilis\u00e9es pour l&rsquo;analyse se d\u00e9finissent dans la page \u201cOptions du mod\u00e8le\u201d de la fen\u00eatre \u201cAnalyse du b\u00e2timent\u201d. \u201cOptions du mod\u00e8le\u201d comprend quatre onglets : &nbsp;Mod\u00e8le,&nbsp;Mod\u00e8le de voiles de contreventement,&nbsp;Mod\u00e8le de dalle et&nbsp;Param\u00e8tres.<\/span><\/div>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-813b9464dc2a0971d33282f08b2c74ad.png\" alt=\"Info\"> <\/div>\n<div><span class=\"colour\">Toute modification effectu\u00e9e dans cette page peut \u00eatre annul\u00e9e avec \u201cParam\u00e8tres par d\u00e9faut\u201d.<\/span><\/div>\n<p><\/span><\/div>\n<\/div>\n<h3 id=\"Model\" class=\"toc_anchors\"><span class=\"font\"><span style=\"font-size: 18px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Mod\u00e8le<\/span><\/b><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/h3>\n<div>\n<div>\n<div><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les param\u00e8tres du mod\u00e8le analytique du b\u00e2timent se r\u00e8glent dans l&rsquo;onglet \u201c<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e8le<\/span><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201d.<\/span><\/span><\/span><\/span><\/span><\/div>\n<\/div>\n<h3 id=\"Material_and_Section_Effective_Stiffness_Factors\" class=\"toc_anchors\"><span class=\"colour\"><b>Facteurs de raideur effective des mat\u00e9riaux et des sections<\/b><span style=\"font-size: 15px\" class=\"size\">&nbsp;<\/span><\/span><\/h3>\n<div style=\"text-align: left\" class=\" align-left\"><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-612635fb9b8d1c283c3c972f1fd27d32.png\"><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Des coefficients permettent de modifier l&rsquo;\u00e9chelle du \u201cModule&nbsp;d&rsquo;\u00e9lasticit\u00e9\u201d, de l&rsquo;&quot;Aire axiale&quot;,&nbsp;de la &quot;Raideur en flexion&quot;,&nbsp;de l&rsquo;\u201cAire de cisaillement\u201d&nbsp;et de la&nbsp;\u201cConstante de torsion\u201d&nbsp;des groupes d&rsquo;\u00e9l\u00e9ments. <\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Une valeur inf\u00e9rieure \u00e0 \u201c1\u201d r\u00e9duit le param\u00e8tre concern\u00e9. Une valeur sup\u00e9rieure \u00e0 \u201c1\u201d l&rsquo;augmente.<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Les valeurs en gris ne sont pas modifiables : elles sont calcul\u00e9es automatiquement.&nbsp;<\/span><\/li>\n<\/ol>\n<\/div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-33da29c454e242e8b71bd6dfdf0d79fb.png\" alt=\"Idea\"><\/div>\n<div><span class=\"colour\">Pour r\u00e9duire la part de charge lat\u00e9rale reprise par les poteaux d&rsquo;une structure \u00e0 voiles et portiques, utilisez un coefficient de 5 % sur l&rsquo;inertie des poteaux. Cette op\u00e9ration multiplie l&rsquo;inertie de tous les poteaux par 0,05 lors de la pr\u00e9paration des donn\u00e9es d&rsquo;analyse. L&rsquo;analyse tient compte de cette valeur.<\/span><\/div>\n<p><\/span><\/div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c16df18052ae5d944b3f5f662d20422f.png\" alt=\"Alert\"><\/div>\n<div><span class=\"colour\">Apr\u00e8s toute modification de ce champ, l&rsquo;analyse doit \u00eatre relanc\u00e9e.<\/span><\/div>\n<p><\/span><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><\/p>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-dcda8f9ab8ee2f874df70d879067101c.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" alt=\"Notes\"><\/div>\n<div><span class=\"colour\">Notez que, dans la plupart des gabarits, le&nbsp;<\/span><i><span class=\"colour\">\u201cFacteur de raideur en torsion\u201d&nbsp;<\/span><\/i><span class=\"colour\">des poutres est fix\u00e9 par d\u00e9faut \u00e0 0,01 (1 %). Cela limite les efforts de torsion que les poutres secondaires induisent dans les poutres principales. De nombreux utilisateurs ne souhaitent pas voir une poutre secondaire g\u00e9n\u00e9rer de la torsion dans la poutre principale <\/span><i><span class=\"colour\">(ce qui, selon eux, s&rsquo;\u00e9carte de l&rsquo;hypoth\u00e8se et de l&rsquo;attente traditionnelles, car cela peut exiger des cadres de torsion dans la poutre principale)<\/span><\/i><span class=\"colour\">.&nbsp;<br \/><\/span><\/div>\n<div>\n<div>\n<div>\n<div><span class=\"colour\">Dans certains cas, comme les poutres courbes, l&rsquo;utilisateur peut vouloir exploiter davantage la raideur en torsion. Ce param\u00e8tre peut alors \u00eatre augment\u00e9.&nbsp;Les propri\u00e9t\u00e9s de section se modifient aussi \u00e9l\u00e9ment par \u00e9l\u00e9ment : s\u00e9lectionnez l&rsquo;\u00e9l\u00e9ment &gt; clic droit &gt; Modifier section\/mat\u00e9riau.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><\/span><\/div>\n<div>\n<div>\n<div>\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div>\n<h3 id=\"Storey_Degrees_of_Freedom\" class=\"toc_anchors\"><span style=\"font-size: 18px\" class=\"size\"><span class=\"colour\">Degr\u00e9s de libert\u00e9 des \u00e9tages<\/span><\/span><br \/><\/h3>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Une liste permet de d\u00e9finir les degr\u00e9s de libert\u00e9 de chaque \u00e9tage. Les options disponibles dans ProtaStructure sont :<\/span><\/span><\/span><\/span><\/span><\/p>\n<ol>\n<li style=\"list-style-type: disc\"><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">X\/Y et torsion autoris\u00e9s :<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Les translations selon X et Y et la torsion de l&rsquo;\u00e9tage autour de l&rsquo;axe Z sont autoris\u00e9es.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">X\/Y autoris\u00e9s, torsion emp\u00each\u00e9e :<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Les translations selon X et Y sont autoris\u00e9es. La torsion autour de l&rsquo;axe Z est emp\u00each\u00e9e.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">X seul autoris\u00e9 :<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Seule la translation selon X est autoris\u00e9e. La translation selon Y et la rotation autour de l&rsquo;axe Z sont emp\u00each\u00e9es.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Y seul autoris\u00e9 :<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Seule la translation selon Y est autoris\u00e9e. La translation selon X et la rotation autour de l&rsquo;axe Z sont emp\u00each\u00e9es.<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les deux derni\u00e8res options servent \u00e0 analyser un syst\u00e8me de portique 2D d\u00e9fini selon la direction libre.<\/span><\/span><\/span><\/span><\/span><\/p>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-43c53dcbc38226a96a90fe610892ae5d.png\" alt=\"Idea\"><span class=\"colour\">Vous pouvez choisir les options&nbsp; \u201cX seul autoris\u00e9\u201d ou \u201dY seul autoris\u00e9\u201d pour d\u00e9finir les degr\u00e9s de libert\u00e9 d&rsquo;un portique isol\u00e9<\/span><\/span><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-dd9ae0219bb6.png\" style=\"padding: 0px;max-width: 100%\"><\/div>\n<div>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Degr\u00e9s de libert\u00e9 des \u00e9tages<\/span><\/span><\/span><\/span><\/i><br \/><\/span><\/p>\n<h3 style=\"font-weight: 500;line-height: 30px;margin-top: 20px;margin-bottom: 10px;font-size: 18px;text-align: left\" id=\"Rigid_Zones_for_concrete_members\" class=\"toc_anchors\"><span style=\"background-color: transparent\" class=\"highlight\"><span style=\"font-size: 18px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Zones rigides (pour les \u00e9l\u00e9ments en b\u00e9ton)<\/span><\/b><\/span><\/span><\/span><br \/><\/h3>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Le programme prend automatiquement en compte, dans le mod\u00e8le d&rsquo;analyse, les zones rigides form\u00e9es aux intersections \u00ab&nbsp;poteau-poutre&nbsp;\u00bb. Les zones rigides d\u00e9terminent les longueurs efficaces des \u00e9l\u00e9ments en b\u00e9ton. Pour les structures en acier, choisissez donc toujours l&rsquo;option \u00ab&nbsp;Aucune&nbsp;\u00bb.&nbsp;<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Pour tenir compte des fissures du b\u00e9ton pouvant appara\u00eetre aux intersections, vous pouvez r\u00e9duire les zones rigides d&rsquo;une valeur donn\u00e9e. Les effets calcul\u00e9s sont plus r\u00e9alistes. Le mod\u00e8le d&rsquo;analyse de ProtaStructure propose les options de zones rigides suivantes :<\/span><\/span><\/span><\/span><\/span><\/p>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201c<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Maximum<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201d&nbsp;<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&quot;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">R\u00e9duire de 50%&quot;<\/span><\/span><\/span><\/span><\/b><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201c<\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">R\u00e9duire de 25%<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201d&nbsp;<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201c<\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Aucune<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201d&nbsp;<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-89bd0fc287a6cff80bf7f63f7b178b90.png\" alt=\"Notes\"> <\/div>\n<div><span class=\"colour\">Pour une comparaison analytique d\u00e9taill\u00e9e des options de zones rigides, consultez&nbsp;<a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/rigid-zone-interpretations\" rel=\"noopener noreferrer\">Interpr\u00e9tations des zones rigides<\/a><\/span><\/div>\n<p><\/span><\/div>\n<div><\/div>\n<div><b style=\"font-size: 18px\"><span class=\"colour\">Section de poutre<\/span><\/b><\/div>\n<\/div>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les boutons radio de cette section permettent de prendre en compte les ailes de la poutre dans le mod\u00e8le du b\u00e2timent.<\/span><\/span><\/span><\/span><br \/><\/span><\/p>\n<h3 style=\"font-weight: 500;line-height: 30px;margin-top: 20px;margin-bottom: 10px;font-size: 18px;text-align: left\" id=\"Merged_Foundation_Model__Soil-Structure_Interaction\" class=\"toc_anchors\"><a style=\"background-color: transparent\"><\/a><span class=\"font\"><span style=\"font-size: 18px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Mod\u00e8le de fondation fusionn\u00e9 \/ Interaction sol-structure<\/span><\/b><\/span><\/span><\/span><br \/><\/h3>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Cette fonction int\u00e8gre les fondations au mod\u00e8le d&rsquo;analyse du b\u00e2timent. Elle permet d&rsquo;\u00e9valuer plus pr\u00e9cis\u00e9ment le comportement du b\u00e2timent.&nbsp; Vous pouvez \u00e9tudier l&rsquo;influence du tassement des fondations sur les efforts dans les \u00e9l\u00e9ments de la superstructure.<br \/><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Acc\u00e9dez \u00e0 cette fonction en s\u00e9lectionnant&nbsp;<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e8le de fondation fusionn\u00e9<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;sous&nbsp;<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Interaction sol-structure<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">.<br \/><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Voici les \u00e9tapes d&rsquo;utilisation du Mod\u00e8le de fondation fusionn\u00e9 :<\/span><\/span><\/span><\/span><\/span><\/p>\n<ol>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e9liser la superstructure et les fondations dans ST00<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Lancer l&rsquo;Analyse du b\u00e2timent<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Aller \u00e0 ST00 (Niveau des fondations)<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Lancer l&rsquo;Analyse EF du radier<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Relancer l&rsquo;Analyse du b\u00e2timent<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Examiner le comportement des structures dans <b>Mod\u00e8le analytique et affichage des r\u00e9sultats<\/b>.<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<\/div>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-89bd0fc287a6cff80bf7f63f7b178b90.png\" alt=\"Notes\"> <\/div>\n<div><span class=\"colour\">La raideur des ressorts de sol (coefficient de r\u00e9action du sol) s&rsquo;ajuste localement dans les propri\u00e9t\u00e9s de chaque panneau de radier. Elle s&rsquo;ajuste globalement dans les Param\u00e8tres d&rsquo;analyse EF du radier.<\/span><\/div>\n<p><\/span><\/div>\n<\/div>\n<\/div>\n<div>\n<h2 style=\"text-align: left\" id=\"ShearWall_Model\" class=\"toc_anchors\"><span class=\"font\"><span class=\"highlight\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 24px\" class=\"size\"><span class=\"colour\">Mod\u00e8le de voile<\/span><\/span><\/span><\/span><\/span><br \/><\/h2>\n<\/div>\n<div>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">ProtaStructure peut mod\u00e9liser les voiles du b\u00e2timent de deux fa\u00e7ons. La premi\u00e8re est le <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le de poteau central\u201d<\/span><\/i><\/b><span class=\"colour\"> et la seconde est le <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le coque \u00e9l\u00e9ments finis\u201d<\/span><\/i><\/b><span class=\"colour\">. Le champ <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le de voile\u201d <\/span><\/i><\/b><span class=\"colour\">d\u00e9finit le mod\u00e8le de voile utilis\u00e9 globalement dans le b\u00e2timent (par d\u00e9faut). Lorsque le <\/span><b><i><span class=\"colour\">&quot;Mod\u00e8le de voile&quot;<\/span><\/i><\/b><span class=\"colour\"> d&rsquo;un voile est r\u00e9gl\u00e9 sur<\/span><b><i><span class=\"colour\">&nbsp;<\/span><\/i><\/b><\/span><\/span><\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><i><span class=\"colour\">\u201c<\/span><\/i><\/b><\/span><\/span><\/span><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><i><span class=\"colour\">Mod\u00e8le de poteau central<\/span><\/i><\/b><\/span><\/span><\/span><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><i><span class=\"colour\">\u201d <\/span><\/i><\/b><span class=\"colour\">, un seul poteau plac\u00e9 au milieu du panneau repr\u00e9sente le voile. L&rsquo;interaction avec les \u00e9l\u00e9ments voisins (poteaux, poutres ou autres voiles) passe par des poutres rigides prolong\u00e9es de chaque c\u00f4t\u00e9.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<div>\n<p style=\"margin: 0px 0px 10px;line-height: 20px\"><span style=\"font-size: 14px\" class=\"size\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-787bf4abb296.png\" style=\"padding: 0px;max-width: 100%\"><br \/><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si le <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le coque \u00e9l\u00e9ments finis\u201d<\/span><\/i><\/b><span class=\"colour\"> est s\u00e9lectionn\u00e9, les voiles sont mod\u00e9lis\u00e9s par des \u00e9l\u00e9ments coque quadrilat\u00e9raux (voir ci-dessous).<\/span><\/span><\/span><\/span><br \/><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px\"><span style=\"font-size: 14px\" class=\"size\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-78442ca83735.png\" style=\"padding: 0px;max-width: 100%\"><br \/><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les champs <\/span><b><i><span class=\"colour\">\u201cLargeur de coque\u201d<\/span><\/i><\/b><span class=\"colour\"> et <\/span><b><i><span class=\"colour\">\u201cHauteur de coque\u201d<\/span><\/i><\/b><span class=\"colour\"> d\u00e9finissent les dimensions maximales des \u00e9l\u00e9ments coque. La valeur par d\u00e9faut de 500 mm par 500 mm convient \u00e0 la plupart des cas. Le temps d&rsquo;analyse augmente quand la largeur et la hauteur diminuent. &nbsp;<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Voici des cas o\u00f9 le mod\u00e8le coque EF peut \u00eatre pr\u00e9f\u00e9rable :<\/span><\/span><\/span><\/span><\/span><\/p>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si le b\u00e2timent comporte des voiles \u00e0 section variable ou de larges voiles de sous-sol, le &quot;<b><i>Mod\u00e8le coque \u00e9l\u00e9ments finis&quot;<\/i><\/b> est recommand\u00e9.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Pour des voiles discontinus (non prolong\u00e9s jusqu&rsquo;\u00e0 la fondation) et port\u00e9s par des poutres ou des dalles, le mod\u00e8le coque EF est plus pr\u00e9cis. Il restitue la variation des efforts sur la longueur du voile.<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-43c53dcbc38226a96a90fe610892ae5d.png\" alt=\"Idea\"> <\/div>\n<div class=\" align-left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Nous recommandons la coque \u00e9l\u00e9ments finis (EF) pour mod\u00e9liser les cas suivants (liste non exhaustive) :<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<ol>\n<li class=\"sty__m99ma3__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Poutre qui rencontre le voile ailleurs qu&rsquo;aux extr\u00e9mit\u00e9s et au milieu<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li class=\"sty__s9h18v__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Poutre avec delZ<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li class=\"sty__5uk6oj__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Voile avec delZ<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li class=\"sty__4664pe__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Voile port\u00e9 par une poutre<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li class=\"sty__ue4spk__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Voile avec charge sur la port\u00e9e du voile<\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li class=\"sty__r4ha5i__cls align-left\" style=\"margin: 0px;padding: 0px;list-style-type: lower-alpha;line-height: 1.7;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Voile inclin\u00e9 (entre \u00e9tages)<\/span><\/span><\/span><\/li>\n<\/ol>\n<p><\/span><\/div>\n<\/div>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les voiles en <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le de poteau central\u201d<\/span><\/i><\/b><span class=\"colour\"> demandent moins de temps d&rsquo;analyse que les voiles en <\/span><b><i><span class=\"colour\">\u201cMod\u00e8le coque \u00e9l\u00e9ments finis\u201d<\/span><\/i><\/b><span class=\"colour\">.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Chaque voile du syst\u00e8me peut recevoir un mod\u00e8le diff\u00e9rent dans l&rsquo;analyse.<\/span><\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/p>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Ce r\u00e9glage se fait dans les propri\u00e9t\u00e9s du voile ou dans le tableau des voiles &gt; &quot;<\/span><b><i><span class=\"colour\">Type de mod\u00e8le de voile<\/span><\/i><\/b><span class=\"colour\">&quot;. Trois options existent :<\/span><\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<ol>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">Par d\u00e9faut<\/span><\/b><span class=\"colour\"> : applique le param\u00e8tre global Mod\u00e8le de voile de la pr\u00e9-analyse<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">Poteau central<\/span><\/b><span class=\"colour\"> : applique le mod\u00e8le de poteau central \u00e0 ce voile uniquement<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">Coque EF<\/span><\/b><span class=\"colour\"> : applique le mod\u00e8le \u00e9l\u00e9ments finis \u00e0 ce voile uniquement<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">Voile de sous-sol (maill\u00e9)<\/span><\/b><span class=\"colour\"> : le voile de sous-sol (maill\u00e9) est pris en compte dans l&rsquo;analyse sismique et le calcul<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">Voile de renforcement (coque \/ maill\u00e9)<\/span><\/b><span class=\"colour\"> : similaire \u00e0 un voile de contreventement en b\u00e9ton arm\u00e9 courant. Des &quot;Ancrages (goujons)&quot; suppl\u00e9mentaires assurent le renforcement sismique.&nbsp;&nbsp;<\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Un voile peut ainsi suivre le &quot;Mod\u00e8le de poteau central&quot; au premier \u00e9tage et le &quot;Mod\u00e8le coque \u00e9l\u00e9ments finis&quot; au deuxi\u00e8me.<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Cette option sert surtout pour les voiles discontinus. La coque EF peut n&rsquo;\u00eatre n\u00e9cessaire qu&rsquo;au niveau de transfert, les autres voiles gardant le &quot;Poteau central&quot;.<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div>\n<h2 style=\"font-weight: 500;line-height: 32px;margin-top: 20px;margin-bottom: 10px;font-size: 20px;text-align: left\" id=\"Slab_Model\" class=\"toc_anchors\"><span class=\"font\"><span style=\"font-size: 24px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Mod\u00e8le de dalle<\/span><\/b><\/span><\/span><\/span><br \/><\/h2>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Les param\u00e8tres de prise en compte des dalles, comme le diaphragme rigide et le maillage, se modifient dans l&rsquo;onglet&nbsp;<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e8le de dalle&nbsp;<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">.<\/span><\/span><\/span><\/span><br \/><\/span><\/p>\n<h3 id=\"Storey_Diaphragm_Model\" class=\"toc_anchors\"><span class=\"colour\">Mod\u00e8le de diaphragme d&rsquo;\u00e9tage<br \/><\/span><\/h3>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Sous l&rsquo;action des charges lat\u00e9rales, il faut pr\u00e9ciser si les dalles de chaque niveau se comportent comme infiniment rigides dans leur plan (action de diaphragme rigide). Ce comportement est g\u00e9n\u00e9ralement mod\u00e9lis\u00e9 par \u00ab&nbsp;<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Diaphragme rigide<\/span><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;\u00bb.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Avec l&rsquo;hypoth\u00e8se de diaphragme rigide \u00e0 un niveau, les degr\u00e9s de libert\u00e9 se r\u00e9duisent \u00e0 deux translations selon X et Y et \u00e0 une torsion autour de l&rsquo;axe Z, normal au plan XY. Les poutres situ\u00e9es dans le diaphragme rigide ne subissent aucune d\u00e9formation axiale.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si l&rsquo;option \u00ab&nbsp;<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Dalles d\u00e9finissant le diaphragme rigide<\/span><\/b><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;\u00bb est s\u00e9lectionn\u00e9e, les diaphragmes rigides sont cr\u00e9\u00e9s en examinant la continuit\u00e9 et le voisinage des dalles, \u00e0 l&rsquo;horizontale comme \u00e0 la verticale. Deux groupes de dalles ou plus qui ne se touchent ni directement ni par des dalles interm\u00e9diaires forment chacun un diaphragme rigide distinct. Certains n\u0153uds peuvent ne toucher aucune dalle. Ces n\u0153uds sont d\u00e9finis comme n\u0153uds libres et n&rsquo;appartiennent \u00e0 aucun diaphragme.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">L&rsquo;option \u00ab&nbsp;<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Diaphragme unique par niveau&nbsp;<\/span><\/b><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u00bb force l&rsquo;ensemble du niveau \u00e0 se comporter comme un diaphragme rigide, m\u00eame sans dalle d\u00e9finie.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si l&rsquo;option \u00ab&nbsp;<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><b><span class=\"colour\">Aucun diaphragme rigide aux niveaux&nbsp;<\/span><\/b><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u00bb est s\u00e9lectionn\u00e9e, l&rsquo;analyse n&rsquo;utilise pas l&rsquo;action de diaphragme rigide. Tous les n\u0153uds des niveaux sont alors consid\u00e9r\u00e9s comme libres. Avec de grandes ouvertures dans le plancher (environ plus de 1\/3 de la surface totale), un diaphragme rigide est peu probable. Il faut alors utiliser cette option.<\/span><\/span><\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/p>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Par d\u00e9faut, la case&nbsp;<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Tous les \u00e9tages<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;est coch\u00e9e : les dalles d\u00e9finissent le diaphragme rigide. Si&nbsp;<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Tous les \u00e9tages&nbsp;<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">est d\u00e9coch\u00e9e, vous choisissez les \u00e9tages \u00e0 traiter comme diaphragme. Les \u00e9tages d\u00e9coch\u00e9s re\u00e7oivent l&rsquo;option<\/span><\/span><\/span><\/span><b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Pas de diaphragme rigide<\/span><\/span><\/span><\/span><\/b><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">.<\/span><\/span><\/span><\/span><\/span><\/p>\n<div class=\" align-left\" style=\"text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><span class=\"highlight\"><\/p>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" alt=\"Notes\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-dcda8f9ab8ee2f874df70d879067101c.png\/\"><\/div>\n<div>Consultez cet article pour une illustration d\u00e9taill\u00e9e :&nbsp;<a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/diaphragm-modelling-example\" rel=\"noopener noreferrer\">Exemple de mod\u00e9lisation du diaphragme<\/a><\/div>\n<p><\/span><\/div>\n<p><\/span><\/span><\/span><\/span><\/div>\n<h3 id=\"Include_Slabs_in_Building_Model_-_Finite_Elements_Mesh\" class=\"toc_anchors\"><span class=\"colour\">Inclure les dalles dans le mod\u00e8le du b\u00e2timent &#8211; Maillage par \u00e9l\u00e9ments finis<\/span><br \/><\/h3>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Cette option se trouve dans l&rsquo;onglet \u00ab&nbsp;<\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e8le de dalle<\/span><\/span><\/span><\/span><\/b><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;\u00bb de l&rsquo;onglet Analyse du b\u00e2timent (voir ci-dessous).&nbsp;<\/span><\/span><\/span><\/span><\/p>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"best\" class=\"docsimage\" data-zdeskdocid=\"img_5193904801636601\" style=\"max-width: 100%;padding: 0px;width: 313px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-ecbfcd80e86346603a74769a220cfcab.png\"><\/div>\n<div><\/div>\n<div><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Cocher&nbsp;<b>Inclure les dalles dans le mod\u00e8le du b\u00e2timent <\/b>signifie que la dalle est maill\u00e9e en \u00e9l\u00e9ments coques dans l&rsquo;analyse du b\u00e2timent.&nbsp;<\/span><\/span><\/span><\/span><\/span><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Un exemple des diff\u00e9rences avec le mod\u00e8le &quot;table top&quot; est pr\u00e9sent\u00e9 ci-dessous dans le&nbsp;<\/span><\/span><a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/post-analysis-ps-2022\" target=\"_blank\" style=\"font-size: 16px\" rel=\"noopener noreferrer\">Mod\u00e8le analytique<\/a><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;:&nbsp;&nbsp;<\/span><\/span><\/div>\n<div>\n<div class=\"target_moving\" id=\"target_mov_img_027243145607555475\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-cf7725ca4beb3b3ec6a2b477c44ae62b.png\" style=\"max-width: 100%;padding: 0px;width: 711px;height: auto\" data-zdeskdocid=\"img_027243145607555475\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<\/div>\n<div><\/div>\n<div><b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><u>Option d\u00e9coch\u00e9e (par d\u00e9faut) &gt; La dalle de plancher n&rsquo;est pas maill\u00e9e :&nbsp;<\/u><\/span><\/span><\/b><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Dans un mod\u00e8le poutre-dalle, la charge des dalles est report\u00e9e sur les poutres par la m\u00e9thode des lignes de rupture ou par d\u00e9composition de charge EF. Elle est ensuite appliqu\u00e9e aux poutres comme charge ext\u00e9rieure pendant l&rsquo;analyse.&nbsp;<\/span><\/span><\/div>\n<\/li>\n<ol>\n<li class=\" align-left\" style=\"list-style-type: disc;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><span class=\"highlight\">Voir cet article :&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/yield-line-and-fe-load-decomposition-with-example\" target=\"_blank\" rel=\"noopener noreferrer\">Lignes de rupture et d\u00e9composition de charge EF avec exemple<\/a><\/span><\/span><\/span><\/span>&nbsp;<\/li>\n<\/ol>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">La raideur de la dalle n&rsquo;est pas prise en compte, car la dalle physique est exclue de l&rsquo;analyse.&nbsp;<br \/><\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Convient aux syst\u00e8mes poutre-dalle r\u00e9guliers, o\u00f9 les poutres porteuses reprennent enti\u00e8rement les charges des dalles.&nbsp;<br \/><\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Ne convient pas aux planchers-dalles, car toutes leurs charges seraient perdues.&nbsp;<\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Ne convient pas \u00e0 une dalle de transfert, car les poteaux et voiles discontinus n&rsquo;auraient aucun appui (suspendus dans le vide).&nbsp;<br \/><\/span><\/span><\/div>\n<\/li>\n<\/ol>\n<div><b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><u>Option coch\u00e9e &gt; La dalle de plancher sera maill\u00e9e :&nbsp;<\/u><\/span><\/span><\/b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Dans un mod\u00e8le poutre-dalle, les charges des dalles sont toujours reprises automatiquement.&nbsp;<\/span><\/span><span class=\"font\"><span class=\"highlight\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">&nbsp;Voir la section ci-dessous pour plus de d\u00e9tails sur l&rsquo;option \u00ab&nbsp;<\/span><\/span><\/span><\/span><b style=\"font-size: 16px\">Utiliser les charges de dalle d\u00e9compos\u00e9es&#8230;<\/b>&nbsp;\u00bb<span style=\"font-size: 16px\">&nbsp;<\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\">La raideur de la dalle est prise en compte, car le maillage de la dalle travaille avec les \u00e9l\u00e9ments filaires connect\u00e9s (poutres, poteaux et voiles). <\/span><\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\">Convient aux mod\u00e8les o\u00f9 vous&nbsp;<\/span><\/span><\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">souhaitez examiner de plus pr\u00e8s l&rsquo;interaction entre la dalle et l&rsquo;ossature, comme une longue dalle en console ou une dalle de forme irr\u00e9guli\u00e8re port\u00e9e par des poutres.&nbsp;<\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\">Obligatoire pour les planchers-dalles, o\u00f9 les dalles reposent directement sur des poteaux ou des voiles sans poutres. Voir :&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/working-with-flat-slabs\" target=\"_blank\" rel=\"noopener noreferrer\">Travailler avec les planchers-dalles<\/a><\/span><\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\">Obligatoire pour les syst\u00e8mes \u00e0 dalle de transfert, o\u00f9 voiles et poteaux peuvent reposer directement sur une dalle. Voir :&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/how-to-model-a-transfer-slab\" target=\"_blank\" rel=\"noopener noreferrer\">Comment mod\u00e9liser une dalle de transfert<\/a><\/span><\/span><\/span><\/div>\n<\/li>\n<li style=\"list-style-type: square\">\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Le maillage permet aussi de prendre en compte plus pr\u00e9cis\u00e9ment les dalles inclin\u00e9es ou les rampes. Voir :&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/how-to-model-inclined-sloping-slab\" target=\"_blank\" rel=\"noopener noreferrer\">Comment mod\u00e9liser une dalle inclin\u00e9e<\/a><\/span><\/span><\/div>\n<\/li>\n<\/ol>\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Voici la description des param\u00e8tres de l&rsquo;onglet <b>Mod\u00e8le de dalle <\/b>:<\/span><\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Mod\u00e8le de diaphragme d&rsquo;\u00e9tage<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;: fonctionnement identique \u00e0 la section pr\u00e9c\u00e9dente. Si&nbsp;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Aucun diaphragme rigide<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;est choisi, un diaphragme semi-rigide est pris en compte selon la valeur de&nbsp;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Raideur dans le plan (membrane)<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;saisie sous&nbsp;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Coefficients de raideur des dalles<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">.<\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si&nbsp;<\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Inclure les dalles dans le mod\u00e8le du b\u00e2timent<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;est coch\u00e9e, &nbsp;on peut choisir les \u00e9tages \u00e0 inclure avec le bouton&nbsp;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u00c9tages \u00e0 mailler<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">. <\/span><\/span><\/span><\/span><\/span><\/li>\n<ol>\n<li style=\"list-style-type: circle\"><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Si la toiture est en plancher-dalle, vous pouvez ne mailler que la dalle de toiture. Les dalles des autres niveaux, en poutre-dalle, restent \u00ab non maill\u00e9es \u00bb. Le mod\u00e8le d&rsquo;analyse est alors plus petit et moins complexe.&nbsp;<\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">L&rsquo;uniformit\u00e9 du maillage se r\u00e8gle avec les valeurs de<\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Taille min. de coque&nbsp;<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">et<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">&nbsp;Taille max. de coque<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">.<br \/><\/span><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\"><b>Inclure les \u00e9l\u00e9ments quadrilat\u00e8res dans le maillage du plancher<\/b> : par d\u00e9faut, la dalle utilise des \u00e9l\u00e9ments triangulaires. Si cette option est coch\u00e9e, des coques quadrilat\u00e8res sont g\u00e9n\u00e9r\u00e9es dans la dalle.&nbsp;<br \/><\/span><\/span><\/span><\/span><\/span><\/li>\n<li class=\" align-left\" style=\"list-style-type: disc;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><span class=\"highlight\"><b>Utiliser les charges de dalle d\u00e9compos\u00e9es dans les \u00e9tages maill\u00e9s<\/b> :&nbsp; D\u00e9termine si les charges de dalle sont calcul\u00e9es et appliqu\u00e9es aux poutres comme charge externe.&nbsp;<\/span><\/span><\/span><\/span><\/li>\n<ol>\n<li class=\" align-left\" style=\"list-style-type: circle;text-align: left\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><span class=\"highlight\">Si l&rsquo;option est coch\u00e9e, les charges de dalle sont report\u00e9es sur les poutres par lignes de rupture ou par d\u00e9composition des charges EF. Elles sont appliqu\u00e9es comme charge externe de portique dans l&rsquo;analyse (voir ci-dessous dans <a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/post-analysis-ps-2022\" target=\"_blank\" rel=\"noopener noreferrer\">Mod\u00e8le analytique<\/a>).&nbsp;<\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<\/ol>\n<\/div>\n<blockquote class=\"zde_indent\">\n<blockquote class=\"zde_indent\">\n<div>\n<div><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><span class=\"highlight\"><br \/><\/span><\/span><\/span><\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-7ac1b862b5468f620b4167bd7b74e89d.png\" style=\"max-width: 100%;padding: 0px;width: 445.5px;height: auto\" data-zdeskdocid=\"img_9377448487451705\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<\/div>\n<\/blockquote>\n<\/blockquote>\n<div>\n<ol>\n<ol>\n<li class=\" align-left\" style=\"list-style-type: circle;text-align: left\"><span class=\"highlight\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><b>Si l&rsquo;option est d\u00e9coch\u00e9e<\/b>, la d\u00e9composition par lignes de rupture ou par \u00e9l\u00e9ments finis est totalement ignor\u00e9e. Les charges de dalle sont prises en compte automatiquement avec le maillage de la dalle (voir ci-dessous dans <a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/post-analysis-ps-2022\" target=\"_blank\" rel=\"noopener noreferrer\">Mod\u00e8le analytique<\/a>)<\/span><\/span><\/span><\/li>\n<\/ol>\n<\/ol>\n<\/div>\n<blockquote class=\"zde_indent\">\n<blockquote class=\"zde_indent\">\n<div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9af6f5084e792e341342ad073d9f6f5d.png\" style=\"max-width: 100%;padding: 0px;width: 671px;height: auto\" data-zdeskdocid=\"img_14192408458537353\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<\/div>\n<\/blockquote>\n<\/blockquote>\n<div>\n<ol>\n<ol>\n<ol style=\"list-style-type: circle\">\n<li style=\"list-style-type: circle\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Dans ce cas, seuls le poids propre, les charges de mur sur poutre et les autres charges d\u00e9finies par l&rsquo;utilisateur sont appliqu\u00e9s aux poutres.<br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Le poids propre de la dalle, la charge d&rsquo;exploitation et les charges permanentes additionnelles sont appliqu\u00e9s aux coques de dalle comme \u00ab Pression sur coque \u00bb<br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Charge surfacique, Charge lin\u00e9ique et Charges ponctuelles sont calcul\u00e9es automatiquement et appliqu\u00e9es au maillage de la dalle.<\/span><\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: circle\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><b style=\"font-size: 15px\"><span class=\"colour\"><span class=\"highlight\">Utiliser les charges de dalle d\u00e9compos\u00e9es dans les \u00e9tages maill\u00e9s&nbsp;<\/span><\/span><\/b><span style=\"font-size: 15px\" class=\"size\"><span class=\"highlight\">doit \u00eatre <\/span><b><span class=\"highlight\">d\u00e9coch\u00e9e<\/span><\/b><span class=\"highlight\"> pour analyser un mod\u00e8le comportant un plancher-dalle, une dalle de transfert ou une dalle irr\u00e9guli\u00e8re.&nbsp;<\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: disc\"><span class=\"highlight\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span class=\"highlight\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Inclure les sections de poteau dans le mod\u00e8le EF<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;permet de prendre en compte le p\u00e9rim\u00e8tre rigide du poteau. La dalle est maill\u00e9e jusqu&rsquo;au p\u00e9rim\u00e8tre du poteau, et non jusqu&rsquo;au n\u0153ud de son axe.&nbsp;<\/span><\/span><\/span><\/span><\/span><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/span><\/li>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Cette option ne s&rsquo;applique qu&rsquo;aux mod\u00e8les <b>poutre-dalle<\/b>, c&rsquo;est-\u00e0-dire aux dalles port\u00e9es par des poutres. La diff\u00e9rence dans le mod\u00e8le analytique est illustr\u00e9e ci-dessous :&nbsp;<\/span><\/span><\/li>\n<li style=\"list-style-type: square\">\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"best\" class=\"docsimage\" data-zdeskdocid=\"img_0644357984932904\" style=\"max-width: 100%;padding: 0px;width: 671px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-f0a7e6b5386b4879709ebd34bbf16f41.png\"><\/div>\n<\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Cette option complique le maillage. En cas d&rsquo;erreurs de maillage ou de r\u00e9sultats inattendus, d\u00e9cochez-la et relancez l&rsquo;analyse.&nbsp;<\/span><\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Pour les mod\u00e8les en plancher-dalle, le p\u00e9rim\u00e8tre rigide des poteaux est toujours pris en compte. Les sections de poteau le sont donc toujours (aucune option pour le d\u00e9sactiver).&nbsp;<br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">Deux options analytiques existent pour le contour du poteau. Elles se choisissent dans l&rsquo;onglet <b>Param\u00e8tres <\/b>(voir la section <a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/model-options#Column_Outline_Modelling_for_Flat_Sab_Models:~:text=for%20more%20details.-,Column%20Outline%20Modelling%20for%20Flat%20Sab%20Models,-There%20are%202\" target=\"_blank\" rel=\"noopener noreferrer\">Mod\u00e8le de contour de poteau <\/a>ci-dessous).&nbsp;<br \/><\/span><\/span><\/li>\n<\/ol>\n<\/ol>\n<div>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Coefficients de raideur des dalles &gt;&nbsp;<\/span><\/span><\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Dans le plan (membrane)&nbsp;<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">peut \u00eatre modifi\u00e9 pour les coques de dalle :<\/span><\/span><\/span><\/span><\/span><\/li>\n<ol>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Cette option permet de simuler des diaphragmes de plancher semi-rigides. Pour l&rsquo;activer, s\u00e9lectionnez \u00ab Niveaux sans diaphragme rigide \u00bb.<br \/><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Si \u00ab Mod\u00e8le de diaphragme d&rsquo;\u00e9tage \u00bb est utilis\u00e9 (r\u00e9gl\u00e9 sur \u00ab Dalles d\u00e9finissant le diaphragme rigide \u00bb ou \u00ab Un seul diaphragme par niveau \u00bb), les raideurs de membrane sont ignor\u00e9es. Les coques sont alors infiniment rigides dans leur plan.<br \/><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Si la raideur de membrane vaut \u00ab 0 \u00bb, ne s\u00e9lectionnez pas l&rsquo;option \u00ab Niveaux sans diaphragme rigide \u00bb. Sinon, l&rsquo;analyse devient instable.<\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Coefficients de raideur des dalles &gt;&nbsp;<\/span><\/span><\/span><b style=\"font-size: 14px\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Raideur en flexion&nbsp;<\/span><\/span><\/span><\/span><\/b><span class=\"colour\"><span style=\"font-size: 14px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">(hors plan) peut \u00eatre modifi\u00e9e pour les coques de dalle :<\/span><\/span><\/span><\/span><\/span><\/li>\n<ol>\n<li style=\"list-style-type: circle\"><span class=\"colour\">La valeur minimale du multiplicateur de raideur en flexion est \u00ab 0.01 \u00bb. La contribution de la flexion est alors pratiquement ignor\u00e9e.<br \/><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Cette raideur ne s&rsquo;applique qu&rsquo;aux cas de charge <\/span><b style=\"font-size: 16px\"><span class=\"colour\">non fissur\u00e9s<\/span><\/b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">, pas aux cas de charge fissur\u00e9s.&nbsp;<\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Si des cas de charge <\/span><b style=\"font-size: 16px\"><span class=\"colour\">fissur\u00e9s<\/span><\/b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"> sont utilis\u00e9s, modifiez la raideur dans <\/span><\/span><b style=\"font-size: 16px\"><span class=\"colour\">Facteurs de raideur effective des mat\u00e9riaux et des sections<\/span><\/b><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">.&nbsp;<\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Pour plus d&rsquo;explications sur les modificateurs de raideur, consultez cet article :<\/span> <a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/effective-stiffness-modifiers\" target=\"_blank\" rel=\"noopener noreferrer\">Modificateurs de raideur effective&nbsp;<\/a><\/li>\n<\/ol>\n<\/ol>\n<\/div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-43c53dcbc38226a96a90fe610892ae5d.png\" alt=\"Idea\"><\/div>\n<div><span class=\"colour\">Lorsque vous diminuez la raideur de la dalle dans son plan et en flexion, la fl\u00e8che de la dalle augmente. La dalle devient plus souple, donc moins raide.<\/span><\/div>\n<div><u><span class=\"colour\">RAIDEUR EN FLEXION<\/span><\/u><span class=\"colour\"> : si vous fixez la raideur en flexion \u00e0 0,01, le moment de calcul de la poutre porteuse augmente aussi, car l&rsquo;encastrement offert par la dalle diminue. Dans ce cas, le moment de calcul de la poutre reste tr\u00e8s proche de celui du plancher sans maillage (charge de la dalle d\u00e9compos\u00e9e avec la m\u00e9thode \u201cD\u00e9composition des charges par EF\u201d).<\/span><\/div>\n<div><u><span class=\"colour\">RAIDEUR DANS LE PLAN<\/span><\/u><span class=\"colour\"> : si vous r\u00e9duisez la raideur membranaire dans le plan, la raideur lat\u00e9rale de la dalle diminue aussi. La dalle est alors plus souple dans la direction horizontale. Vous devez vous attendre \u00e0 un d\u00e9placement lat\u00e9ral plus important.<\/span><\/div>\n<p><\/span><\/p>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Les dalles nervur\u00e9es et les planchers-caissons peuvent \u00eatre inclus. Seules les poutres sont prises en compte ; les plaques sont incluses comme charge uniform\u00e9ment r\u00e9partie.&nbsp;<\/span><\/li>\n<\/ol>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" alt=\"Notes\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-dcda8f9ab8ee2f874df70d879067101c.png\/\"><\/div>\n<div><span class=\"colour\">Vous pouvez consulter le d\u00e9tail des r\u00e9sultats de l&rsquo;analyse dans l&rsquo;onglet Analyse &gt; <\/span><a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/post-analysis-ps-2022#Display_Analytical_Model\" target=\"_blank\" rel=\"noopener noreferrer\"><span class=\"colour\">Mod\u00e8le analytique<\/span><\/a><span class=\"colour\">&nbsp;. Diverses ic\u00f4nes permettent d&rsquo;afficher graphiquement les d\u00e9placements, ainsi que les pressions ou les efforts des \u00e9l\u00e9ments et des coques.<\/span>&nbsp;<\/div>\n<p><\/span><\/div>\n<\/div>\n<\/div>\n<div>\n<h2 id=\"Settings\" class=\"toc_anchors\"><b style=\"font-size: 24px\"><span class=\"colour\">Param\u00e8tres<\/span><\/b><br \/><\/h2>\n<\/div>\n<div>\n<p style=\"margin: 0px 0px 10px;line-height: 20px;text-align: left\" class=\" align-left\"><span style=\"font-size: 14px\" class=\"size\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Vous pouvez d\u00e9finir d&rsquo;autres options li\u00e9es \u00e0 l&rsquo;analyse dans l&rsquo;onglet \u201c<\/span><\/span><\/span><\/span><i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">Param\u00e8tres<\/span><\/span><\/span><\/span><\/i><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"highlight\"><span class=\"colour\">\u201d.<\/span><\/span><\/span><\/span><br \/><\/span><\/p>\n<\/div>\n<\/div>\n<h3 id=\"Issue_Warnings_For_Cantilever_Beams_Not_Marked\" class=\"toc_anchors\"><span class=\"colour\">Avertissements pour les poutres en console non marqu\u00e9es<\/span><br \/><\/h3>\n<div><span class=\"colour\">Si l&rsquo;extr\u00e9mit\u00e9 libre des poutres n&rsquo;est pas indiqu\u00e9e dans l&rsquo;\u00c9diteur graphique, le programme affiche un avertissement pour la marquer. Si cette option est d\u00e9coch\u00e9e, aucun avertissement n&rsquo;appara\u00eet.<\/span><\/div>\n<div><\/div>\n<div><span class=\"colour\">Si vous avez marqu\u00e9 manuellement chaque poutre en console (via&nbsp;\u201c<\/span><i><span class=\"colour\">Marquer l&rsquo;extr\u00e9mit\u00e9 libre de la poutre en console<\/span><\/i><span class=\"colour\">\u201d), il est recommand\u00e9 de d\u00e9cocher cette option. Sinon, cet avertissement appara\u00eet \u00e0 chaque ex\u00e9cution de l&rsquo;Analyse du b\u00e2timent.<\/span><\/div>\n<h3 id=\"Issue_Warnings_For_Unsupported_Columns_Before_Analysis\" class=\"toc_anchors\"><span class=\"colour\">Avertissements pour les poteaux non appuy\u00e9s avant l&rsquo;analyse<\/span><br \/><\/h3>\n<div><span class=\"colour\">Si des poteaux ou des voiles du syst\u00e8me restent sans appui, des messages d&rsquo;avertissement s&rsquo;affichent. Un poteau peut ne pas reposer sur un autre \u00e9l\u00e9ment. Il peut aussi ne pas avoir d&rsquo;appui au n\u0153ud inf\u00e9rieur. Dans ce cas, revenez \u00e0 l&rsquo;\u00c9diteur graphique et corrigez le mod\u00e8le. Vous pouvez d\u00e9sactiver cette fonction en d\u00e9cochant cette option.<\/span><\/div>\n<h3 id=\"Print_Column_Wall_and_Beam_Section_Properties_in_Post-Analysis_Report\" class=\"toc_anchors\"><span class=\"colour\">Imprimer les propri\u00e9t\u00e9s de section des poteaux, voiles et poutres dans le rapport post-analyse<\/span><br \/><\/h3>\n<div><span class=\"colour\">Cochez cette option pour inclure dans le rapport post-analyse les propri\u00e9t\u00e9s de section des poteaux, voiles et poutres.<\/span><\/div>\n<h3 id=\"Use_Sparse_Solver_for_Building_Analysis\" class=\"toc_anchors\"><span class=\"colour\">Utiliser le \u00ab solveur creux \u00bb pour l&rsquo;analyse du b\u00e2timent<\/span><br \/><\/h3>\n<div><span class=\"colour\">Le solveur creux r\u00e9duit le temps n\u00e9cessaire \u00e0 l&rsquo;analyse. Pour certains types de mod\u00e8les, la r\u00e9duction est spectaculaire (par exemple, mod\u00e8les utilisant des \u00e9l\u00e9ments finis coques pour les voiles, ou mod\u00e8les tr\u00e8s grands). Pour d&rsquo;autres, elle est moindre.<br \/><\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-3d150d32288e.png\" style=\"padding: 0px;max-width: 100%;width: 336px;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_9962585901480807\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div><\/div>\n<div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-1402a64bff498d28f8678351430e4812.png\" alt=\"Alert\"> <\/div>\n<div><span class=\"colour\">Cependant, le solveur creux est plus strict et tol\u00e8re moins les erreurs de mod\u00e9lisation, comme les \u00e9l\u00e9ments non appuy\u00e9s et l&rsquo;instabilit\u00e9. Si le calcul du mod\u00e8le ne va pas \u00e0 son terme, d\u00e9sactivez cette option.<\/span><\/div>\n<p><\/span><\/div>\n<\/div>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><\/p>\n<div><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-813b9464dc2a0971d33282f08b2c74ad.png\" alt=\"Info\"> <\/div>\n<div>\n<div>Consultez la vid\u00e9o <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/how-to-detect-modeling-errors-with-sparse-solver-protastructure\" rel=\"noopener noreferrer\">Comment d\u00e9tecter les erreurs de mod\u00e9lisation avec le solveur creux ? | ProtaStructure<\/a>&nbsp;pour savoir comment r\u00e9soudre l&rsquo;avertissement <i>&quot;Factorization of Positive Definite Sparse Matrix Failed&quot; <\/i>.<br \/><img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-eaadc6699e3b7f5a1ce5be3c03a7a1fd.png\" style=\"padding: 0px;max-width: 100%;width: 470px;height: auto\" data-zdeskdocid=\"img_4031719375655478\" class=\"docsimage\" data-zdeskdocselectedclass=\"\"><\/div>\n<\/div>\n<p><\/span><\/div>\n<h3 id=\"TotalRelative_Horizontal_Drift_Limits\" class=\"toc_anchors\"><span class=\"colour\">Limites de d\u00e9placement horizontal total\/relatif<\/span><br \/><\/h3>\n<div><span class=\"colour\">Le programme v\u00e9rifie le d\u00e9placement horizontal du b\u00e2timent et l&rsquo;inclut dans le rapport post-analyse. Les valeurs limites d\u00e9finies ici pour <\/span><i><span class=\"colour\">&quot;D\u00e9placement horizontal total&quot;<\/span><\/i><span class=\"colour\"> et <\/span><i><span class=\"colour\">&quot;D\u00e9placement horizontal relatif&quot;<\/span><\/i><span class=\"colour\"> sont utilis\u00e9es dans ce rapport.<\/span><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-da1d182c282a.png\" style=\"padding: 0px;max-width: 100%;width: 454px;height: auto\" class=\"currimg docsimage\" data-zdeskdocid=\"img_9814625143641693\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div><\/div>\n<div><span class=\"colour\">Le d\u00e9placement horizontal total est le rapport entre le d\u00e9placement horizontal du plancher et la hauteur jusqu&rsquo;\u00e0 ce niveau. Le d\u00e9placement horizontal relatif est le rapport entre le d\u00e9placement horizontal relatif du plancher et la hauteur de l&rsquo;\u00e9tage concern\u00e9.&nbsp;<\/span><\/div>\n<div><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><\/p>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-dcda8f9ab8ee2f874df70d879067101c.png\/\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" alt=\"Notes\"><img decoding=\"async\" data-image=\"contentStyle\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-43c53dcbc38226a96a90fe610892ae5d.png\" alt=\"Idea\"> <\/div>\n<div><span class=\"colour\">Le choix des valeurs limites revient enti\u00e8rement \u00e0 l&rsquo;utilisateur, selon sa philosophie de calcul et sa r\u00e9f\u00e9rence. En cas de non-conformit\u00e9, consultez le &quot;<\/span><b><span class=\"colour\">Rapport de v\u00e9rifications post-analyse<\/span><\/b><span class=\"colour\">&quot; sous l&rsquo;onglet &quot;Rapports&quot; pour le d\u00e9tail calcul\u00e9 \u00e9tage par \u00e9tage. Une cause fr\u00e9quente d&rsquo;\u00e9chec de la v\u00e9rification du d\u00e9placement horizontal relatif est une variation de raideur lat\u00e9rale entre deux \u00e9tages cons\u00e9cutifs, par exemple :<br \/><\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Variation du nombre de poteaux ou de voiles&nbsp;<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Variation de la disposition ou du mat\u00e9riau, par exemple une structure en acier au-dessus d&rsquo;un b\u00e2timent en b\u00e9ton<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Rupture de continuit\u00e9 des poteaux ou des voiles. Un \u00e9tage de transfert avec des poteaux ou des voiles discontinus pr\u00e9sente un d\u00e9placement lat\u00e9ral relativement plus \u00e9lev\u00e9 que l&rsquo;\u00e9tage &quot;sans transfert&quot; situ\u00e9 dessous.&nbsp;<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Manque de raideur lat\u00e9rale (par exemple : \u00e9l\u00e9ments trop \u00e9lanc\u00e9s, absence de voiles ou de poteaux r\u00e9sistants, ou formation de rotules non ma\u00eetris\u00e9e dans les poteaux)<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">\u00c9l\u00e9ments instables et non support\u00e9s (exemple : barres de treillis de toiture articul\u00e9es, sans maintien ni contreventement ad\u00e9quat)<\/span><\/li>\n<\/ol>\n<div><span class=\"colour\">Il est recommand\u00e9 d&rsquo;ouvrir le &quot;Mod\u00e8le analytique&quot; et d&rsquo;activer le trac\u00e9 des d\u00e9placements (ou d&rsquo;&quot;Animer&quot; le d\u00e9placement) sous un cas de charge lat\u00e9ral. Cela permet de visualiser et d&rsquo;identifier l&rsquo;origine du d\u00e9placement relativement \u00e9lev\u00e9 dans cet \u00e9tage. <br \/><\/span><\/div>\n<div><span class=\"colour\">Il appartient \u00e0 l&rsquo;utilisateur de v\u00e9rifier ces non-conformit\u00e9s.&nbsp; Il peut ensuite assouplir les limites, ignorer la non-conformit\u00e9 ou engager une action corrective. Une action corrective consiste \u00e0 modifier l&rsquo;ossature et les sections pour augmenter la raideur lat\u00e9rale (au d\u00e9placement lat\u00e9ral) et \u00e9liminer les causes de variation de raideur lat\u00e9rale des \u00e9tages cit\u00e9es ci-dessus.&nbsp;<\/span><\/div>\n<p><\/span><\/div>\n<div><\/div>\n<h3 id=\"Axial_Load_Comparison_Tolerance\" class=\"toc_anchors\"><span class=\"colour\">Tol\u00e9rance de comparaison des charges axiales<br \/><\/span><\/h3>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">ProtaStructure compare les charges verticales du b\u00e2timent avant leur transfert aux poutres et apr\u00e8s leur d\u00e9composition sur les poutres, avant l&rsquo;analyse du b\u00e2timent. Une troisi\u00e8me v\u00e9rification additionne les charges axiales des poteaux apr\u00e8s l&rsquo;analyse. Ces trois groupes de valeurs doivent \u00eatre voisins. Un \u00e9cart de 5% convient comme valeur par d\u00e9faut. <br \/><\/span><\/span><\/div>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Des probl\u00e8mes de lignes de rupture de dalle ou de transfert de charges dans le mod\u00e8le peuvent porter cet \u00e9cart au-del\u00e0 de 5%. Un message d&rsquo;avertissement s&rsquo;affiche apr\u00e8s l&rsquo;analyse si la tol\u00e9rance de 5% est d\u00e9pass\u00e9e. &nbsp;<br \/><\/span><\/span><\/div>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Consultez le&nbsp;<\/span><\/span><i><span class=\"colour\"><b><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Rapport de comparaison des charges axiales<\/span><\/b><\/span><\/i><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">&nbsp;pour plus de d\u00e9tails ; voir&nbsp;<a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/axial-load-comparison-report-example\" rel=\"noopener noreferrer\">Pr\u00e9sentation du rapport de comparaison des charges axiales (exemple d\u00e9taill\u00e9)<\/a>.<\/span><\/span><\/div>\n<h3 id=\"Column_Outline_Modelling_for_Flat_Sab_Models\" class=\"toc_anchors\"><span class=\"colour\">Mod\u00e9lisation du contour de poteau pour les mod\u00e8les \u00e0 plancher-dalle<br \/><\/span><\/h3>\n<div><span class=\"colour\"><span style=\"font-size: 16px;letter-spacing: 0.1px\">Pour les mod\u00e8les \u00e0 plancher-dalle ou \u00e0 dalle de transfert, la dalle est toujours maill\u00e9e jusqu&rsquo;au contour p\u00e9riph\u00e9rique du poteau.&nbsp;&nbsp;Deux options permettent de former le contour analytique :<\/span><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><b><u><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">1.&nbsp; Utiliser des liaisons rigides \u00e0 raideur finie<\/span><\/span><\/u><\/b><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">Les liaisons rigides peuvent se d\u00e9former selon les chargements.&nbsp; Cette option peut r\u00e9duire les pics d&rsquo;efforts en rive de poteau et diminuer les besoins en acier.&nbsp;<\/span><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">Cette option convient aux mod\u00e8les \u00e0 plancher-dalle faiblement ou moyennement charg\u00e9s.&nbsp;<\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<div class=\" align-left\" style=\"text-align: left\"><span style=\"font-size: 16px;letter-spacing: 0.1px\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"highlight\"><span class=\"colour\">C&rsquo;est la seule option pour ProtaStructure 2025 et les versions ant\u00e9rieures.<\/span><\/span><\/span><\/span><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><b><u><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">2. Utiliser le mod\u00e8le de contraintes de corps&nbsp;<\/span><\/span><\/u><\/b><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">Les contraintes de corps relient deux n\u0153uds en un seul corps, comme par une liaison infiniment raide. Elles ne se d\u00e9forment donc pas, contrairement \u00e0 l&rsquo;option des liaisons rigides.&nbsp;<\/span><\/span><span><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><span class=\"colour\">Cette option convient aux mod\u00e8les \u00e0 plancher-dalle ou \u00e0 dalle de transfert fortement charg\u00e9s.&nbsp;<\/span><\/span><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px;letter-spacing: 0.1px\"><span class=\"colour\">Cette option n&rsquo;appara\u00eet que dans ProtaStructure&nbsp;<\/span><\/span><b style=\"font-size: 16px;letter-spacing: 0.1px\"><span class=\"colour\">2026<\/span><\/b><span style=\"font-size: 16px;letter-spacing: 0.1px\"><span class=\"colour\">.&nbsp;<\/span><\/span><span><br \/><\/span><\/div>\n<div><font color=\"#000000\"><br \/><\/font><\/div>\n<div><font color=\"#000000\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Pour une explication d\u00e9taill\u00e9e des deux options, consultez cet article :&nbsp;<\/span><a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/column-outline-modelling-for-flat-slab-models\" rel=\"noopener noreferrer\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Mod\u00e9lisation du contour de poteau pour les mod\u00e8les \u00e0 plancher-dalle et \u00e0 dalle de transfert<\/span><\/a><\/font><\/div>\n<h3 class=\"toc_anchors\" id=\"Storey_Weight_and_Center_of_Gravity_Calculations\"><span class=\"colour\">Calcul du poids d&rsquo;\u00e9tage et du centre de gravit\u00e9<\/span><br \/><\/h3>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Il existe deux options :&nbsp;<\/span><br \/><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\"><b><span style=\"font-size: 16px;line-height: normal\" class=\"size\">1. Utiliser les charges de poutre d\u00e9compos\u00e9es<\/span><\/b><span style=\"font-size: 16px;line-height: normal\" class=\"size\"><br \/><\/span><\/span><\/div>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Cette option convient uniquement aux syst\u00e8mes poutres-dalles, o\u00f9 les charges de dalle peuvent \u00eatre d\u00e9compos\u00e9es \/ calcul\u00e9es correctement sur les poutres par la m\u00e9thode des lignes de rupture ou par la m\u00e9thode de <\/span><b><span style=\"font-size: 16px;line-height: normal\" class=\"size\">d\u00e9composition des charges par EF <\/span><\/b><span style=\"font-size: 16px;line-height: normal\" class=\"size\">. <br \/><\/span><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Les&nbsp;<\/span><\/span><span><span style=\"font-size: 16px;line-height: normal\" class=\"size\">r\u00e9actions sont calcul\u00e9es aux n\u0153uds d&rsquo;extr\u00e9mit\u00e9 des poutres et assimil\u00e9es \u00e0 des masses aux n\u0153uds.&nbsp; <br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: square\"><span><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Si cette option est s\u00e9lectionn\u00e9e, les masses aux n\u0153uds servent au calcul du centre de gravit\u00e9 et du poids.<br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span class=\"highlight\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Cette option ne doit pas servir pour un syst\u00e8me \u00e0 plancher-dalle (sans poutres) : les charges du plancher seraient perdues dans le calcul du poids d&rsquo;\u00e9tage.&nbsp;<\/span><\/span><\/span><\/li>\n<\/ol>\n<div><span><br \/><\/span><\/div>\n<div><span class=\"colour\"><\/p>\n<div><span class=\"colour\"><b><span style=\"font-size: 16px;line-height: normal\" class=\"size\">2. Utiliser les charges de dalle non d\u00e9compos\u00e9es.&nbsp;<br \/><\/span><\/b><\/span><\/div>\n<p><\/span><\/p>\n<div><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Cette m\u00e9thode calcule s\u00e9par\u00e9ment les charges de dalle et de poutre. Elle n&rsquo;exige ni que la dalle soit port\u00e9e par des poutres, ni que des poutres existent :&nbsp;<br \/><\/span><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Elle s&rsquo;applique aussi bien aux planchers-dalles qu&rsquo;aux syst\u00e8mes poutres-dalles.&nbsp;<br \/><\/span><\/span><\/li>\n<li style=\"list-style-type: square;text-align: left\" class=\" align-left\"><span class=\"font\"><span class=\"colour\"><span class=\"highlight\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">En bref, sans poutres dans le syst\u00e8me, comme pour un plancher-dalle, l&rsquo;option \u00ab Utiliser les charges non d\u00e9compos\u00e9es \u00bb doit \u00eatre employ\u00e9e.&nbsp;&nbsp;<\/span><\/span><\/span><\/span><span class=\"colour\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"font\"><span class=\"highlight\"><br \/><\/span><\/span><\/span><\/span><\/li>\n<li style=\"list-style-type: square;text-align: left\" class=\" align-left\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"colour\"><span class=\"highlight\">C&rsquo;est la m\u00e9thode par d\u00e9faut, car elle calcule avec pr\u00e9cision le poids d&rsquo;\u00e9tage pour tous les types de syst\u00e8me.&nbsp;<\/span><\/span><\/span><\/span><\/li>\n<\/ol>\n<\/div>\n<h3 id=\"The_massweight_determined_for_the_chosen_option_can_be_reviewed_by_hovering_the_cursor_over_the_Center_of_Gravity_indicated_on_the_form_plan_after_running_a_Building_Analysis_example_below\" class=\"toc_anchors\">\n<div style=\"font-size: 14px;font-weight: 400;text-align: left\" class=\" align-left\"><span class=\"colour sty__3tjd3n__cls\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"colour\"><span class=\"highlight\">La masse ou le poids d\u00e9termin\u00e9 pour l&rsquo;option choisie peut \u00eatre consult\u00e9 en survolant avec le curseur le centre de gravit\u00e9 indiqu\u00e9 sur le plan de la forme, apr\u00e8s une Analyse du b\u00e2timent (exemple ci-dessous)&nbsp;<br \/><\/span><\/span><\/span><\/span><\/span><\/div>\n<div style=\"font-size: 14px;font-weight: 400;text-align: left\" class=\" align-left\"><span class=\"colour sty__3tjd3n__cls\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"colour\"><span class=\"highlight\"><br \/><\/span><\/span><\/span><\/span><\/span><\/div>\n<div style=\"font-size: 14px;font-weight: 400;text-align: left\" class=\" align-left\"><span class=\"colour sty__3tjd3n__cls\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"colour\"><span class=\"highlight\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-fa85316b8aebc8d2281d7f3b2d4d9ea2.png\" style=\"max-width: 100%;padding: 0px;width: 217px;height: auto\" data-zdeskdocid=\"img_9041854687667014\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><br \/><\/span><\/span><\/span><\/span><\/span><\/div>\n<div style=\"font-size: 14px;font-weight: 400;text-align: left\" class=\" align-left\"><span class=\"colour sty__4cjfrg__cls\"><span class=\"font\"><span class=\"size\" style=\"font-size: 16px;line-height: normal\"><span class=\"colour\"><span class=\"highlight\"><br \/><\/span><\/span><\/span><\/span><\/span><\/div>\n<div style=\"font-size: 14px;font-weight: 400;text-align: left\" class=\" align-left\"><\/div>\n<\/h3>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Les options utilis\u00e9es pour l&rsquo;analyse se d\u00e9finissent dans la page \u201cOptions du mod\u00e8le\u201d de la fen\u00eatre \u201cAnalyse du b\u00e2timent\u201d. \u201cOptions du mod\u00e8le\u201d comprend quatre onglets&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"_whitepaper_youtube_videos":"","_whitepaper_youtube_url":"","_whitepaper_youtube_thumbnail":"","footnotes":""},"categories":[32],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2204","wiki","type-wiki","status-publish","hentry","category-building-analysis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - 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