{"id":2156,"date":"2026-04-27T12:13:03","date_gmt":"2026-04-27T12:13:03","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/calcul-interactif-de-l-armature-des-poutres-ps-2020\/"},"modified":"2026-04-27T12:13:03","modified_gmt":"2026-04-27T12:13:03","slug":"calcul-interactif-de-l-armature-des-poutres-ps-2020","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/calcul-interactif-de-l-armature-des-poutres-ps-2020\/","title":{"rendered":"Calcul interactif de l&rsquo;armature des poutres Ps 2020"},"content":{"rendered":"<h1 class=\"toc_anchors\" id=\"General\"><span class=\"colour\">G\u00e9n\u00e9ral<\/span><\/h1>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><b><span class=\"colour\">Calcul de section de poutre<\/span><\/b><span class=\"colour\"> permet \u00e0 l&rsquo;utilisateur d&rsquo;acc\u00e9der aux donn\u00e9es d&rsquo;armature de la poutre, au rapport de poutre, etc.<br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><span><span class=\"colour\">Pour acc\u00e9der \u00e0 <\/span><b><span class=\"colour\">Calcul de section de poutre<\/span><\/b><span class=\"colour\">, l&rsquo;utilisateur peut :<\/span><\/span><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><span><span class=\"colour\">S\u00e9lectionner une poutre, puis cliquer sur \u00ab Calcul de section \u00bb&nbsp;<img decoding=\"async\" alt=\"\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c27104d8e40fec4c2fd6fce0f61c03cb.png\" data-zdeskdocid=\"img_3880736811940435\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\" style=\"width: 28px;height: auto\">&nbsp;sous l&rsquo;onglet <\/span><b><span class=\"colour\">Poutre<\/span><\/b><span class=\"colour\">, ou<br \/><\/span><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">S\u00e9lectionner une poutre, effectuer un clic droit pour ouvrir le menu contextuel, puis cliquer sur \u00ab Calcul de section&nbsp;<\/span><img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9e132e008391d81c18c4af71144578a0.png\"><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n<\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n &nbsp;<br \/>\n <\/span><b><span class=\"colour\">Calcul de section de poutre&nbsp;<\/span><\/b><span class=\"colour\"><br \/>\n <\/span><span><span class=\"colour\">comporte deux onglets :&nbsp;<\/span><\/span><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><b><span class=\"colour\">&quot;Poutres\u201d<\/span><\/b><span><span class=\"colour\">&nbsp;onglet<\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><span><b><span class=\"colour\">&quot;Armatures\u201d&nbsp;<\/span><\/b><span class=\"colour\">onglet<\/span><\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n<\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<h1 class=\"toc_anchors\" id=\"Beams_Tab\"><span class=\"colour\">Onglet Poutres<br \/><\/span><\/h1>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n Dans l&rsquo;onglet&nbsp;<br \/>\n <\/span><b><span class=\"colour\">\u00ab Poutres \u00bb<\/span><\/b><span class=\"colour\">, les donn\u00e9es g\u00e9om\u00e9triques et les vues 3D des poutres continues s&rsquo;affichent ici. La port\u00e9e libre et la longueur entre axes de la poutre figurent dans cet \u00e9diteur de tableau.<\/span><\/div>\n<div><span class=\"colour\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-473b06c4037554d604797e172f69c6ef.png\" style=\"max-width: 100%;height: auto;padding: 0\" data-zdeskdocid=\"img_6671819130833552\" class=\"docsimage\" data-zdeskdocselectedclass=\"original\"><\/span><br \/>\n \n<\/div>\n<div>\n<\/div>\n<div>\n <span class=\"colour\">On distingue ici 3 sections :<br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><b><u><span class=\"colour\">Barres d&rsquo;outils<\/span><\/u><span class=\"colour\"> :<\/span><\/b><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: disc\"><b><span class=\"colour\">Param\u00e8tres de calcul de poutre :<\/span><\/b><span class=\"colour\">&nbsp; Permet d&rsquo;afficher\/modifier les efforts (moment, effort tranchant, torsion) de la poutre s\u00e9lectionn\u00e9e, issus des r\u00e9sultats d&rsquo;analyse. Plus de d\u00e9tails sont donn\u00e9s plus bas dans cette section.<br \/>(Autre m\u00e9thode : double-cliquer avec le bouton gauche sur la poutre dans l&rsquo;<\/span><b><span class=\"colour\">\u00c9diteur de donn\u00e9es d&rsquo;axes et de poutres<\/span><\/b><span class=\"colour\"> pour ouvrir la bo\u00eete de dialogue Calcul interactif.)<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: disc\"><b><span class=\"colour\">Vue de c\u00f4t\u00e9 et Vue 3D :<\/span><\/b><span class=\"colour\">&nbsp;R\u00e9initialise l&rsquo;affichage de la ou des poutres en vue de c\u00f4t\u00e9 ou en vue 3D par d\u00e9faut.<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: disc\"><b><span class=\"colour\">OK et Annuler :&nbsp;<\/span><\/b><span class=\"colour\">OK applique les modifications, Annuler quitte sans conserver les modifications effectu\u00e9es.<\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><b><u><span class=\"colour\">\u00c9diteur de donn\u00e9es d&rsquo;axes et de poutres<\/span><\/u><span class=\"colour\"> : <\/span><\/b><span class=\"colour\">les donn\u00e9es g\u00e9om\u00e9triques de la ou des poutres s&rsquo;affichent ici, notamment les appuis, la classe du b\u00e9ton et de l&rsquo;acier, la longueur de port\u00e9e et les dimensions de la section. L&rsquo;utilisateur peut \u00e9galement modifier la section de la poutre ici.<\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: decimal\"><b><u><span class=\"colour\">Vue 3D<\/span><\/u><span class=\"colour\"> :<\/span><\/b><span class=\"colour\"> Affiche la poutre s\u00e9lectionn\u00e9e. S&rsquo;il s&rsquo;agit d&rsquo;une poutre continue, l&rsquo;ensemble des poutres continues s&rsquo;affiche avec les poteaux dans cette vue.<\/span><\/li>\n<\/ol>\n<div>\n<div>\n  <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-599ff4e01296a5b03c68bb82d8711044.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" alt=\"Warning\"><span class=\"colour\"><br \/>\n   <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n    <\/span><span class=\"colour\">Modifier la dimension de la poutre ici sert uniquement \u00e0 une v\u00e9rification rapide\/approximative :&nbsp; <\/span><span class=\"colour\"><br \/><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\">C&rsquo;est utile si le calcul actuel \u00e9choue faute de section suffisante : modifier la dimension puis relancer le calcul permet de trouver rapidement une section qui convient.&nbsp;&nbsp;<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\">Modifier la dimension change le poids et la raideur du mod\u00e8le, ce qui invalide le r\u00e9sultat d&rsquo;analyse actuel.&nbsp;<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\">L&rsquo;analyse du b\u00e2timent doit donc \u00eatre relanc\u00e9e pour obtenir des efforts actualis\u00e9s. Le calcul de la poutre doit ensuite \u00eatre v\u00e9rifi\u00e9 \u00e0 nouveau avec ces efforts actualis\u00e9s.&nbsp;<\/span><\/li>\n<li style=\"list-style-type: square\"><span class=\"colour\">Il est \u00e9galement possible d&rsquo;ajuster la dimension de la poutre via la bo\u00eete de dialogue <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/working-with-beams-ps-2022#Beam_Properties:~:text=Beam%C2%A0ribbon.-,Beam%20Properties,-Beam%20Properties%C2%A0will\" rel=\"noopener noreferrer\"><u>Propri\u00e9t\u00e9s de poutre<\/u><\/a>&nbsp;.&nbsp;<\/span><\/li>\n<\/ol>\n<p><\/span><span class=\"colour\"><br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<h2 class=\"toc_anchors\" id=\"Beam_Design_Parameters\"><span class=\"colour\">Param\u00e8tres de calcul de poutre<br \/><\/span><\/h2>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  <\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Les efforts de chacune des six zones peuvent s&rsquo;afficher ici.<\/span><\/span>\n <\/div>\n<div>\n<div>\n   <img decoding=\"async\" style=\"padding: 0px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-7555d54b0d78f7d9e055b18eca9f3151.png\"><br \/>\n   \n  <\/div>\n<div>\n<div>\n    <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-69a3b47ad69defadac12da6e6f29543b.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\" alt=\"Notes\"><span class=\"colour\"><br \/>\n     <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n      Tous les efforts de calcul sont d\u00e9termin\u00e9s \u00e0 partir des diagrammes enveloppes des combinaisons de charges, qui correspondent aux valeurs maximales obtenues par superposition de tous les diagrammes de combinaisons de charges.<br \/>\n     <\/span><\/div>\n<p><\/span><span class=\"colour\"><br \/>\n   <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n   Les valeurs de K, K\u2019, x, As et As\u2019 sont ensuite calcul\u00e9es pour chaque zone et affich\u00e9es dans le m\u00eame tableau.<br \/>\n  <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n   <br \/>\n  <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n   Lorsque le rapport K\/K\u2019 est inf\u00e9rieur \u00e0 1,0, aucun acier comprim\u00e9 n&rsquo;est n\u00e9cessaire.<br \/>\n   <br \/>\n  <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  <br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  La hauteur utile&nbsp;<br \/>\n  <\/span><b><span class=\"colour\">&quot; h\u2019 &quot;<\/span><\/b><span class=\"colour\">&nbsp;jusqu&rsquo;au centre des barres est calcul\u00e9e s\u00e9par\u00e9ment \u00e0 chaque emplacement. Elle est automatiquement r\u00e9duite si l&rsquo;acier ne tient pas sur une seule couche. <\/span><\/div>\n<div><span class=\"colour\">Deux m\u00e9thodes permettent de calculer la hauteur utile, d\u00e9finies dans <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/beam-design-settings-ps2022\" rel=\"noopener noreferrer\"><u>R\u00e9glages de calcul de poutre<\/u><\/a> &gt; onglet <b>Calcul<\/b>,&nbsp;<\/span><span class=\"colour\">comme illustr\u00e9 ci-dessous :<\/span><\/div>\n<div>\n<p>  <img decoding=\"async\" style=\"max-width: 100%;height: auto;padding: 0\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-be8504949abb3f2c825340259145e959.png\">\n <\/div>\n<\/div>\n<div>\n<div>\n  \n <\/div>\n<div>\n <span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">La section d&rsquo;acier tendu (As) et la section d&rsquo;acier comprim\u00e9 (As\u2019) sont calcul\u00e9es pour toutes les valeurs de moment. Les cadres sont calcul\u00e9s pour l&rsquo;effort tranchant et la torsion, selon les valeurs indiqu\u00e9es dans les champs correspondants.<\/span><\/span><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">En cochant l&rsquo;option&nbsp;<\/span><b><span class=\"colour\">\u00ab Modifier manuellement \u00bb&nbsp;<\/span><\/b><span class=\"colour\">en bas \u00e0 droite, ces valeurs deviennent modifiables : <\/span><\/span><\/div>\n<ol>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Autrement dit, ces champs permettent de calculer l&rsquo;acier pour un moment de calcul donn\u00e9. <\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Modifier les champs de moment recalcule dynamiquement les sections d&rsquo;acier requises. Un nouveau dimensionnement du ferraillage de la poutre est alors n\u00e9cessaire.<\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Ce nouveau dimensionnement s&rsquo;effectue en cliquant sur \u00ab <b>S\u00e9lectionner les barres<\/b> \u00bb dans l&rsquo;onglet <a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/reinforcement-data-editor-ps-2022\" target=\"_blank\" rel=\"noopener noreferrer\"><u>Ferraillage du Calcul de section de poutre<\/u><\/a>.&nbsp;<\/span><\/span><\/li>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Remarque : si cette option est coch\u00e9e, le \u00ab Diagramme des r\u00e9sultats d&rsquo;analyse \u00bb de la poutre devient invalide. Il ne peut plus \u00eatre affich\u00e9, car le calcul ne se base plus sur les r\u00e9sultats de l&rsquo;analyse du b\u00e2timent.<\/span><\/li>\n<\/ol>\n<div>\n <span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-69a3b47ad69defadac12da6e6f29543b.png\" data-type=\"non-resize\" data-image=\"contentStyle\" alt=\"Notes\"><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n   Seule la valeur de l&rsquo;effort tranchant \u00e0 l&rsquo;appui de la poutre en console est prise en compte dans le calcul de l&rsquo;effort tranchant. Les cadres d\u00e9termin\u00e9s \u00e0 partir de cette valeur (Vd) sont utilis\u00e9s sur toute la port\u00e9e de la poutre en console.<br \/>\n  <\/span><\/div>\n<p><\/span><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">La fen\u00eatre se ferme et les modifications sont enregistr\u00e9es si le bouton&nbsp;<\/span><b><span class=\"colour\">\u00ab OK \u00bb<\/span><\/b><span class=\"colour\">&nbsp;est actionn\u00e9. Le&nbsp;<\/span><b><span class=\"colour\">\u00ab Annuler \u00bb<\/span><\/b><span class=\"colour\">&nbsp;bouton ferme \u00e9galement la fen\u00eatre de calcul du ferraillage, mais les modifications sont annul\u00e9es.<\/span><\/span><span class=\"colour\"><br \/>\n <\/span><span class=\"colour\"><br \/><\/span><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><span class=\"colour\"><br \/><\/span><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">La contribution des barres relev\u00e9es (le cas \u00e9ch\u00e9ant) \u00e0 la r\u00e9sistance \u00e0 l&rsquo;effort tranchant des poutres n&rsquo;est pas prise en compte.<\/span><\/span><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div>\n \n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>G\u00e9n\u00e9ral Calcul de section de poutre permet \u00e0 l&rsquo;utilisateur d&rsquo;acc\u00e9der aux donn\u00e9es d&rsquo;armature de la poutre, au rapport de poutre, etc. Pour acc\u00e9der \u00e0 Calcul&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":[9],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2156","wiki","type-wiki","status-publish","hentry","category-beam-section-design"],"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>Calcul interactif de l&#039;armature des poutres Ps 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