{"id":2209,"date":"2026-04-27T12:26:51","date_gmt":"2026-04-27T12:26:51","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/exemple-de-rapport-de-comparaison-de-charges-axiales\/"},"modified":"2026-04-27T12:26:51","modified_gmt":"2026-04-27T12:26:51","slug":"exemple-de-rapport-de-comparaison-de-charges-axiales","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/exemple-de-rapport-de-comparaison-de-charges-axiales\/","title":{"rendered":"Exemple de rapport de comparaison de charges axiales"},"content":{"rendered":"<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\">\n<div><span style=\"font-size: 11pt\" class=\"size\"><\/span><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-93b4de37c41549413a4d0218cd4c949c.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" alt=\"Info\"><\/p>\n<div><span style=\"font-size: 16px;line-height: normal\" class=\"size\">La vid\u00e9o tutoriel de ce sujet est disponible \u00e0 l&rsquo;adresse suivante :<\/span> <a target=\"_blank\" href=\"https:\/\/www.youtube.com\/watch?v=p2uCDptwLrc&amp;list=PLK6L9NVEbzK87yz-ZPQvAck3iXzz6YBbW&amp;index=14\" rel=\"noopener noreferrer\">ProtaStructure 2025 Basic E-Learning :&nbsp;14 Analyse du b\u00e2timent, rapport de comparaison des charges axiales<\/a><\/div>\n<p><\/span><\/div>\n<\/p>\n<div style=\"text-align: justify\"><span><br \/><\/span><\/div>\n<div class=\" align-center\" style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-41641fe01bc0.png\" style=\"padding: 0px;max-width: 100%;width: 336.312px;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_6313097748209466\" data-zdeskdocselectedclass=\"\"><span style=\"font-size: 16px\" class=\"size\"> <br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Un mod\u00e8le simple peut \u00eatre cr\u00e9\u00e9 pour illustrer le rapport de comparaison des charges axiales. La vue 3D du mod\u00e8le appara\u00eet ci-dessus. La vue en plan du mod\u00e8le appara\u00eet ci-dessous.<\/span><span style=\"font-size: 16px\" class=\"size\"> <br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div class=\" align-center\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-09358622a67e.png\" style=\"padding: 0px;max-width: 100%;width: 443.5px;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_6496483808848252\" data-zdeskdocselectedclass=\"best\"><span style=\"font-size: 16px\" class=\"size\"> <br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div><span><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Informations g\u00e9n\u00e9rales sur le mod\u00e8le<\/span><\/span><\/div>\n<div><\/div>\n<table style=\"border-collapse: collapse;width: 650px;max-width: 100%;height: 184px\" width=\"561\" cellspacing=\"0\" cellpadding=\"0\" border=\"0\">\n<colgroup>\n<col style=\"width: 88pt\" width=\"118\">\n<col style=\"width: 332pt\" width=\"443\">\n <\/colgroup>\n<tbody>\n<tr style=\"height: 14.4pt\">\n<td style=\"height: 20px;width: 88pt\" width=\"118\" height=\"19\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Dimensions<\/span> <span style=\"font-size: 16px;line-height: normal\" class=\"size\">de la poutre<\/span>&nbsp;<\/td>\n<td class=\" align-left\" style=\"width: 332pt;text-align: left;height: 20px\" width=\"443\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: <\/span><span class=\"font\"><span class=\"colour\"><span class=\"highlight\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">250mm (largeur) x 500mm (profondeur)<\/span><span style=\"font-size: 16px;line-height: normal\" class=\"size\">&nbsp;<\/span><\/span><\/span><\/span><\/td>\n<\/tr>\n<tr style=\"height: 14.4pt\">\n<td style=\"height: 20px\" height=\"19\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Dimensions du poteau<\/span><\/td>\n<td style=\"height: 20px\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: 250mm x 250mm<\/span><\/td>\n<\/tr>\n<tr style=\"height: 14.4pt\">\n<td style=\"height: 14.4pt\" height=\"19\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Hauteur du poteau<\/span><\/td>\n<td><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: 3000mm<\/span><\/td>\n<\/tr>\n<tr style=\"height: 16.2pt\">\n<td style=\"height: 16.2pt\" height=\"22\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">\u00c9paisseur de la dalle<\/span><\/td>\n<td><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: 150mm &#8211; donc poids propre = 3,6 kN\/m<\/span><font class=\"font5\"><sup><span style=\"font-size: 10px\" class=\"size\">2<\/span><\/sup><\/font><\/td>\n<\/tr>\n<tr style=\"height: 28.8pt\">\n<td style=\"height: 28.8pt\" class=\"xl66\" height=\"38\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">Chargement de la dalle<\/span><\/td>\n<td style=\"width: 332pt\" width=\"443\" class=\"xl65\"><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: Poids propre (calcul\u00e9<br \/>\n  automatiquement en fonction de l&rsquo;\u00e9paisseur de la dalle)<\/span><\/td>\n<\/tr>\n<tr style=\"height: 16.2pt\">\n<td style=\"height: 16.2pt\" height=\"22\"><\/td>\n<td><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: SDL = 1 kN\/m<\/span><font class=\"font5\"><sup><span style=\"font-size: 10px\" class=\"size\">2<\/span><\/sup><\/font><\/td>\n<\/tr>\n<tr style=\"height: 16.2pt\">\n<td style=\"height: 16.2pt\" height=\"22\"><\/td>\n<td><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: Charge permanente totale = 4,6 kN\/m<\/span><font class=\"font5\"><sup><span style=\"font-size: 10px\" class=\"size\">2<\/span><\/sup><\/font><\/td>\n<\/tr>\n<tr style=\"height: 16.2pt\">\n<td style=\"height: 16.2pt\" height=\"22\"><\/td>\n<td><span style=\"font-size: 16px;line-height: normal\" class=\"size\">: Charge d&rsquo;exploitation = 0 kN\/m<\/span><font class=\"font5\"><sup><span style=\"font-size: 10px\" class=\"size\">2<\/span><\/sup><\/font><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">Le rapport suivant est g\u00e9n\u00e9r\u00e9 par ProtaStructure pour ce mod\u00e8le. Il comporte 3 sections principales (tableaux), dont les titres apparaissent en gras.<\/span><span><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span><\/span><\/div>\n<div><\/div>\n<div><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-27cc1c9234066575137420121efafe8e.png\"><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><span><\/span><span style=\"font-size: 16px\" class=\"size\"> <br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<p><span style=\"font-size: 16px\" class=\"size\"><span style=\"font-size: 16px\" class=\"size\">Les objectifs et la validit\u00e9 des comparaisons possibles entre les sections de ce tableau sont pr\u00e9sent\u00e9s dans les sections suivantes.<\/span><\/span><\/p>\n<div>\n<h1 id=\"Table_1_Total_Loads_Based_on_Slabs\" class=\"toc_anchors\"><span style=\"font-size: 32px\" class=\"size\"><span class=\"colour\">Tableau 1 : Charges totales (bas\u00e9es sur les dalles)<\/span><\/span><\/h1>\n<p class=\"MsoNormal\">\n<div><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-48cd21a0590f69e129773b18566e381d.png\"><\/div>\n<div><b><u><span style=\"font-size: 16px\" class=\"size\">Ce tableau pr\u00e9sente la somme suivante :<\/span><\/u><\/b><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Poids propres des \u00e9l\u00e9ments<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les poteaux\/voiles<\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"font\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span><\/span><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les poutres<br \/><\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les dalles<br \/><\/span><\/li>\n<\/ol>\n<div><span><span style=\"font-size: 16px\" class=\"size\">Les charges de dalle sont calcul\u00e9es \u00e0 partir de la surface vue en plan,&nbsp;<\/span><\/span><b><span style=\"font-size: 16px\" class=\"size\">c&rsquo;est-\u00e0-dire<\/span><\/b><span><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span><\/span><i><span style=\"font-size: 16px\" class=\"size\">qu&rsquo;elles ne sont pas encore d\u00e9compos\u00e9es sur les poutres.<\/span><\/i><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">Les calculs d\u00e9taill\u00e9s sont donc les suivants :<\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-dc21089b9f191eda8f940c6130c6d595.png\" style=\"padding: 0px;max-width: 100%\"><br \/><\/span><\/div>\n<div class=\" align-left\"><\/div>\n<h1 id=\"Table_2_Total_Loads_Decomposition_to_Beams\" class=\"toc_anchors\"><span style=\"font-size: 32px\" class=\"size\"><span class=\"colour\">Tableau 2 : Charges totales (d\u00e9composition sur les poutres)<\/span><\/span><br \/><\/h1>\n<div><span style=\"font-size: 16px\" class=\"size\">Les diff\u00e9rences entre ce tableau et le Tableau 1 visent \u00e0 mettre en \u00e9vidence les probl\u00e8mes de d\u00e9composition des charges de dalle. Deux m\u00e9thodes de d\u00e9composition sont prises en charge ; chacune est examin\u00e9e s\u00e9par\u00e9ment.<\/span> <\/div>\n<h3 id=\"Using_Yield_Line_Decomposition\" class=\"toc_anchors\">D\u00e9composition par lignes de rupture<br \/><\/h3>\n<p class=\"MsoNormal\">\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-6f93c4d6ce2d798c84baa773f5879b6a.png\" style=\"padding: 0px;max-width: 100%\"><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">Ce tableau pr\u00e9sente une nouvelle fois la somme suivante :<\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Poids propres des \u00e9l\u00e9ments<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les poteaux\/voiles<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les poutres&nbsp;<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Charges appliqu\u00e9es sur les dalles<\/span><\/li>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<\/ol>\n<p><span><span style=\"font-size: 16px\" class=\"size\">La principale diff\u00e9rence dans ce tableau est que les charges de dalle sont d\u00e9sormais d\u00e9compos\u00e9es et donc comptabilis\u00e9es comme des UDL&rsquo;s, VDL&rsquo;s, etc. sur les poutres porteuses. Les charges de dalle deviennent donc nulles, tandis que les charges des poutres augmentent en cons\u00e9quence.<\/span><\/span><\/p>\n<p><span style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Charges de dalle d\u00e9compos\u00e9es \u2013 Reprenons le mod\u00e8le et les charges de dalle d\u00e9compos\u00e9es pr\u00e9sent\u00e9es ci-dessous.<\/span><\/span><\/p>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<p class=\"MsoNormal align-center\" style=\"margin-bottom: 8pt;line-height: 107%;text-align: center\"><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-6f696e31886e.png\" style=\"padding: 0px;max-width: 100%;width: 443.5px;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_7646399461480147\" data-zdeskdocselectedclass=\"best\"><\/span><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/p>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div class=\" align-center\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><\/span><span style=\"font-size: 16px\" class=\"size\"> <img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-a80387f0fa0db07514378c0430cdcd39.png\" style=\"padding: 0px;max-width: 100%;width: 508px;height: auto\" data-zdeskdocid=\"img_4169648970791042\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><span><span style=\"font-size: 16px\" class=\"size\">La vue en plan montre les lignes de rupture. \u00c0 proprement parler, ce sont simplement des lignes de d\u00e9composition de charge. Elles indiquent la zone de charge de dalle attribu\u00e9e \u00e0 chaque poutre. Cette m\u00e9thode de d\u00e9composition de charge surfacique est commun\u00e9ment appel\u00e9e m\u00e9thode des lignes de rupture. D&rsquo;apr\u00e8s la distribution de charge triangulaire g\u00e9n\u00e9r\u00e9e sur la poutre ci-dessus, le calcul de charge de poutre devient alors :<\/span><\/span><\/p>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div>\n<p class=\"MsoNormal\" style=\"margin-left: 65pt\"><span style=\"font-size: 16px\" class=\"size\">Charge de dalle d\u00e9compos\u00e9e&nbsp;&nbsp;&nbsp; =&nbsp;(A1 + A2 + A3 + A4) kN\/m2 <i>&lt;voir le sch\u00e9ma&gt; &#8211;&nbsp;<\/i>charges d&rsquo;ajustement<i><br \/><\/i>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;4 x 28.75 kN &#8211; 9 kN<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;&nbsp;<\/span><b style=\"text-align: justify;text-indent: -20.9pt\"><span style=\"font-size: 16px\" class=\"size\">106 kN<\/span><\/b><\/p>\n<\/div>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Le profil de chargement de la poutre et le calcul ci-dessus deviennent nettement plus complexes lorsque les agencements de dalle sont plus irr\u00e9guliers.<\/span><\/div>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><span style=\"font-size: 16px\" class=\"size\">Les calculs pr\u00e9sent\u00e9s dans le tableau 2 sont donc les suivants :<\/span><\/p>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 115%\"><span style=\"font-size: 16px\" class=\"size\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Poids propre des poteaux&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;= INCHANG\u00c9<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<\/span><b style=\"text-indent: -21.4pt\"><span style=\"font-size: 16px\" class=\"size\">18 kN<\/span><\/b><\/p>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br \/>\n  Charges des poutres&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;<br \/>\n  = 57 kN + 106 kN<br \/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=&nbsp;<\/span><b style=\"text-align: justify;text-indent: -21.4pt\"><span style=\"font-size: 16px\" class=\"size\">163 kN<\/span><\/b><\/div>\n<h3 id=\"Using_Finite_Element_Decomposition\" class=\"toc_anchors\">Utilisation de la d\u00e9composition par \u00e9l\u00e9ments finis<span style=\"font-size: 15px\" class=\"size\">&nbsp;<\/span><\/h3>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Si les charges de dalle sont d\u00e9compos\u00e9es avec la m\u00e9thode alternative par \u00e9l\u00e9ments finis, les charges de la dalle sont appliqu\u00e9es \u00e0 la poutre sous forme de charge de poutre complexe, comme illustr\u00e9 ci-dessous. <br \/><\/span><\/div>\n<div class=\" align-center\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-634d8958ee99d32972cfd56c6cd4400e.png\" style=\"padding: 0px;max-width: 100%;width: 508px;height: auto\" data-zdeskdocid=\"img_5023697753872765\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div class=\" align-center\" style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-fa8da7ea69c16cc3bdf133b3bfc8a3bf.png\" style=\"padding: 0px;max-width: 100%;width: 905.875px;height: auto\" data-zdeskdocid=\"img_8176920193723132\" class=\"docsimage\" data-zdeskdocselectedclass=\"\"><\/div>\n<h3 id=\"Comparisons_between_Tables_1_and_2\" class=\"toc_anchors\">Comparaison entre les tableaux 1 et 2<br \/><\/h3>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">La comparaison entre ces deux tableaux permet d&rsquo;\u00e9valuer la fiabilit\u00e9 de la d\u00e9composition des charges de dalle. Si les totaux du tableau 2 sont inf\u00e9rieurs \u00e0 ceux du tableau 1, cela indique qu&rsquo;une partie des charges s&rsquo;est perdue pendant la d\u00e9composition. Dans ce cas, il convient de :<\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">V\u00e9rifier que les charges de dalle sont appliqu\u00e9es dans les limites de la dalle<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">V\u00e9rifier visuellement les lignes de rupture \u2013 si elles ne semblent pas correctes sur le plan, la d\u00e9composition est probablement erron\u00e9e.<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Si les lignes de rupture sont erron\u00e9es, envisager de passer \u00e0 la m\u00e9thode de d\u00e9composition par \u00e9l\u00e9ments finis.<\/span><\/li>\n<\/ol>\n<\/div>\n<div>\n<div class=\" align-justify\" style=\"text-align: justify\"><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-c58830554c1033187b85dc264daccdda.png\" alt=\"Remarque\"><\/p>\n<div><span style=\"font-size: 16px\">Les d\u00e9compositions par \u00e9l\u00e9ments finis et par lignes de rupture r\u00e9partissent toutes deux les charges de dalle sur les poutres. S&rsquo;il existe des zones sans poutres (o\u00f9 les dalles reposent directement sur les poteaux, c&rsquo;est-\u00e0-dire des planchers-dalles), le processus de d\u00e9composition perd n\u00e9cessairement une partie de la charge. Dans ce cas, il faut utiliser une analyse compl\u00e8te par \u00e9l\u00e9ments finis ou l&rsquo;option \u00ab Inclure la dalle dans le mod\u00e8le du b\u00e2timent \u00bb. L&rsquo;\u00e9cart entre les totaux des tableaux 1 et 2 doit alors \u00eatre consid\u00e9r\u00e9 comme un indicateur de cette n\u00e9cessit\u00e9.<\/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\"><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-c58830554c1033187b85dc264daccdda.png\" alt=\"Remarque\"><\/p>\n<div><span style=\"font-size: 16px\">Sauf dans les mod\u00e8les les plus simples, il existe toujours un l\u00e9ger \u00e9cart entre les tableaux 1 et 2. Cet \u00e9cart peut \u00eatre ignor\u00e9, surtout si la charge d\u00e9compos\u00e9e du tableau 2 est l\u00e9g\u00e8rement sup\u00e9rieure \u00e0 la charge non d\u00e9compos\u00e9e du tableau 1.<\/span><\/div>\n<p><\/span><\/div>\n<h1 id=\"Table_3_Building_Analysis_Column_and_Wall_Axial_Loads\" class=\"toc_anchors\"><span style=\"font-size: 32px\" class=\"size\"><span class=\"colour\">Tableau 3 : charges axiales des poteaux et voiles \u2013 Analyse du b\u00e2timent<\/span><\/span><\/h1>\n<p class=\"MsoNormal align-center\" style=\"text-align: center;line-height: 115%\"><span style=\"font-size: 16px\" class=\"size\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-a5d7378b1d390cb3978ba9867ad50983.png\" style=\"padding: 0px;max-width: 100%;width: 508px;height: auto\" data-zdeskdocid=\"img_31631552718263123\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><br \/><\/span><\/p>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Les valeurs du tableau ci-dessus refl\u00e8tent les r\u00e9sultats de l&rsquo;analyse de l&rsquo;ossature du b\u00e2timent. L&rsquo;analyse du b\u00e2timent est une analyse de l&rsquo;ossature dans laquelle les poutres sont charg\u00e9es avec toutes les charges de dalle d\u00e9compos\u00e9es. Les donn\u00e9es d&rsquo;entr\u00e9e reposent donc sur la m\u00e9thode des lignes de rupture ou sur la m\u00e9thode de d\u00e9composition par \u00e9l\u00e9ments finis, selon celle qui a \u00e9t\u00e9 s\u00e9lectionn\u00e9e.&nbsp;<\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Une fois l&rsquo;analyse termin\u00e9e, les charges de poteaux cumul\u00e9es \u00e0 chaque \u00e9tage s&rsquo;affichent dans le tableau.<\/span> <\/div>\n<h1 id=\"Axial_Load_Comparison_Warnings\" class=\"toc_anchors\"><span class=\"colour\">Avertissements de comparaison des charges axiales<\/span><br \/><\/h1>\n<div class=\" align-justify\" style=\"text-align: justify\"><span style=\"font-size: 16px\" class=\"size\">Il est donc pertinent de comparer le tableau 2 au tableau 3. Cette comparaison oppose les donn\u00e9es d&rsquo;entr\u00e9e de l&rsquo;analyse \u00e0 ses r\u00e9sultats. Si les totaux diff\u00e8rent, l&rsquo;analyse du b\u00e2timent comporte une erreur. Dans ce cas, v\u00e9rifiez les points suivants :<\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Si des avertissements sont apparus pendant l&rsquo;analyse du b\u00e2timent, ne les ignorez pas. Prenez les mesures correctives n\u00e9cessaires.<br \/><\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-b6b2fb3391b0.png\" style=\"padding: 0px;max-width: 100%\"><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/li>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<\/ol>\n<div><span style=\"font-size: 16px\" class=\"size\">Cette erreur provient g\u00e9n\u00e9ralement d&rsquo;erreurs courantes de mod\u00e9lisation du b\u00e2timent. Pour r\u00e9soudre ce probl\u00e8me :&nbsp;<\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">V\u00e9rifiez que les poteaux et poutres discontinus sont correctement support\u00e9s.<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Utilisez \u00ab D\u00e9composition de charge par EF \u00bb plut\u00f4t que \u00ab M\u00e9thode des lignes de rupture \u00bb pour garantir un chargement correct de la dalle (charge nodale, charge uniform\u00e9ment r\u00e9partie). Pour plus de d\u00e9tails, consultez&nbsp;<\/span><a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/yield-line-and-fe-load-decomposition-with-example\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-size: 16px\" class=\"size\">Lignes de rupture et d\u00e9composition de charge par EF, avec exemple<\/span><\/a><span style=\"font-size: 16px\" class=\"size\">.<\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\">Assurez-vous que les \u00e9tages d\u00e9finis comme \u00ab \u00c9tage similaire \u00bb dans \u00ab Modifier l&rsquo;\u00e9tage \u00bb ont la m\u00eame hauteur. Exemple : un 2e \u00e9tage de 4 m associ\u00e9 \u00e0 un 3e \u00e9tage de 3 m d\u00e9finis comme \u00e9tages similaires g\u00e9n\u00e8re une erreur de comparaison des charges axiales. Excluez l&rsquo;\u00e9tage \u00e0 la hauteur diff\u00e9rente pour r\u00e9soudre ce probl\u00e8me.<\/span><\/li>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<\/ol>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\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-93b4de37c41549413a4d0218cd4c949c.png\" alt=\"Info\"><\/p>\n<div><span style=\"font-size: 16px\">Les mod\u00e8les en plancher-dalle illustrent bien ce cas : des \u00e9carts apparaissent et des charges semblent perdues. Ignorez ces \u00e9carts, une descente de charges par \u00e9l\u00e9ments finis (EF) \u00e9tant n\u00e9cessaire. Autre solution : maillez les dalles de plancher en cochant l&rsquo;option \u00ab Inclure les dalles dans le mod\u00e8le du b\u00e2timent \u00bb dans le menu Analyse du b\u00e2timent.<\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><\/span><\/div>\n<p><\/span><\/div>\n<div>\n<h1 id=\"Axial_Load_Comparison_Warning_Limitation\" class=\"toc_anchors\"><span class=\"zdbe2854f03d custom_text zde1e2d924f1 zdad1205e4d7\">Limites de l&rsquo;avertissement de comparaison des charges axiales<\/span><\/h1>\n<\/div>\n<div>\n<div>Un faux avertissement peut appara\u00eetre dans les cas suivants :&nbsp;<\/div>\n<ol>\n<li style=\"list-style-type: decimal\">Trop de \u00ab D\u00e9finition de plan \u00bb cr\u00e9\u00e9es au m\u00eame \u00e9tage (4 ou plus). Cela affecte le chargement relev\u00e9 dans le tableau 1.<\/li>\n<li style=\"list-style-type: decimal\">Une \u00ab D\u00e9finition de plan \u00bb cr\u00e9\u00e9e sur une dalle inclin\u00e9e, comme une rampe. Cela affecte le chargement relev\u00e9 dans le tableau 1.<\/li>\n<li style=\"list-style-type: decimal\">Un \u00ab Type d&rsquo;appui \u00bb est d\u00e9fini sur une poutre. Cela affecte le chargement relev\u00e9 dans le tableau 3.<\/li>\n<li style=\"list-style-type: decimal\">Charges appliqu\u00e9es sur les tirants de pannes.&nbsp;<\/li>\n<li style=\"list-style-type: decimal\">Un d\u00f4me appliqu\u00e9 sur un plancher d&rsquo;\u00e9tage similaire. Cela affecte la charge du d\u00f4me relev\u00e9e dans les tableaux 1 et 2. R\u00e9initialisez l&rsquo;\u00e9tage similaire pour r\u00e9soudre cet avertissement.<\/li>\n<li style=\"list-style-type: decimal\">Charge appliqu\u00e9e sur une zone rigide (en rouge). Cette charge n&rsquo;appara\u00eet pas dans les tableaux 1 et 2, mais elle est correctement relev\u00e9e dans le tableau 3 (r\u00e9sultat de l&rsquo;analyse du b\u00e2timent).<br \/><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-0f74ae55dabf546ccb913955fd1c5d88.png\"><\/li>\n<\/ol>\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\" data-type=\"non-resize\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c7409bc5dd1998488ef8e5ee0e4daddd.png\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" alt=\"Avertissement\"><\/p>\n<div>Si cela se produit, l&rsquo;utilisateur peut ignorer l&rsquo;avertissement de comparaison des charges axiales apr\u00e8s avoir v\u00e9rifi\u00e9 lui-m\u00eame le comportement et les efforts du mod\u00e8le analytique.<\/div>\n<p><\/span><\/div>\n<\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La vid\u00e9o tutoriel de ce sujet est disponible \u00e0 l&rsquo;adresse suivante : ProtaStructure 2025 Basic E-Learning :&nbsp;14 Analyse du b\u00e2timent, rapport de comparaison des charges&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-2209","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) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Exemple de rapport de comparaison de charges axiales<\/title>\n<meta name=\"description\" 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