{"id":2295,"date":"2026-04-27T12:53:47","date_gmt":"2026-04-27T12:53:47","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/forces-sismiques-sur-les-elements-non-structuraux\/"},"modified":"2026-04-27T12:53:47","modified_gmt":"2026-04-27T12:53:47","slug":"forces-sismiques-sur-les-elements-non-structuraux","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/forces-sismiques-sur-les-elements-non-structuraux\/","title":{"rendered":"Forces sismiques sur les \u00e9l\u00e9ments non structuraux"},"content":{"rendered":"<div>\n<h1 id=\"Introduction\" class=\"toc_anchors\"><a name=\"_Toc63086709\"><\/a><a name=\"_Toc65159612\"><span><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">Introduction<\/span><\/span><\/span><\/a><\/h1>\n<p class=\"MsoNormal\"><span class=\"colour\">ProtaStructure calcule les efforts dans les \u00e9l\u00e9ments non structuraux<br \/>\nconform\u00e9ment \u00e0 l&rsquo;<\/span><b><span class=\"colour\">EC8 Chapitre 4.3.5<\/span><\/b><span class=\"colour\">.<\/span><\/p>\n<p class=\"MsoNormal\"><span class=\"colour\">Ce document d\u00e9taille le calcul de la force sismique des \u00e9l\u00e9ments non<br \/>\nstructuraux, ainsi que des param\u00e8tres comme le coefficient sismique.<\/span><\/p>\n<h1 id=\"Building_Model_Details\" class=\"toc_anchors\"><a name=\"_Toc63086710\"><\/a><a name=\"_Toc65159613\"><span><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">D\u00e9tails du mod\u00e8le de b\u00e2timent<\/span><\/span><\/span><\/a><\/h1>\n<div><span class=\"colour\">Le mod\u00e8le de b\u00e2timent utilis\u00e9 en exemple comporte 7 \u00e9tages courants. La vue<br \/>\n3D et le plan d&rsquo;\u00e9tage type sont pr\u00e9sent\u00e9s ci-dessous.<\/span><\/div>\n<p><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-56db71581aac.jpg\" style=\"padding: 0px;max-width: 100%;width: 456px;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_5525204508349972\" data-zdeskdocselectedclass=\"original\"><\/p>\n<div><span class=\"colour\"><\/p>\n<div><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><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-ce4226b0a273aa7b8f33d75372f0d638.png\"><\/p>\n<div><span class=\"colour\">Assurez-vous que l&rsquo;Analyse du b\u00e2timent s&rsquo;est termin\u00e9e avec succ\u00e8s. V\u00e9rifiez que les r\u00e9sultats de l&rsquo;analyse sont corrects en suivant les proc\u00e9dures d\u00e9crites dans cet article :<\/span> <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/building-a-model-guideline\" rel=\"noopener noreferrer\">Guide de mod\u00e9lisation d&rsquo;un b\u00e2timent<\/a><\/div>\n<p><\/span><\/div>\n<p><a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/building-a-model-guideline\" rel=\"noopener noreferrer\"><\/a><\/span><\/div>\n<div><a name=\"_Toc63086711\"><\/a><a name=\"_Toc65159614\"><span class=\"colour\"><br \/><\/span><\/a><\/div>\n<h1 class=\"toc_anchors\" id=\"User_Interface\"><a name=\"_Toc65159614\"><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">Interface utilisateur<\/span><\/span><\/a><\/h1>\n<div><span class=\"colour\">1.&nbsp; Acc\u00e9dez \u00e0 l&rsquo;onglet <b>Chargement<\/b> &gt; S\u00e9lectionnez <b>Charges des composants non structuraux.&nbsp; <br \/><\/b><\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\">Le Calculateur des efforts des \u00e9l\u00e9ments non structuraux s&rsquo;ouvre.&nbsp;<\/span><\/li>\n<\/ol>\n<div><span class=\"colour\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-b66e36078b8a3e5181a41e8cb498c480.png\" style=\"max-width: 100%;padding: 0px;width: 830.5px;height: auto\" data-zdeskdocid=\"img_9209432571859512\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><br \/><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">2.&nbsp; Cliquez sur &quot;<b>Ajouter un \u00e9l\u00e9men<\/b>t&quot; pour ajouter un \u00e9l\u00e9ment&nbsp;<br \/><\/span><\/div>\n<div><font color=\"#000000\">3.&nbsp;&nbsp;<\/font><span><b>Rep\u00e8re de l&rsquo;\u00e9l\u00e9ment,<\/b>&nbsp;<b>Type d&rsquo;\u00e9l\u00e9ment non structural<\/b> selon l&rsquo;EC8 Tableau 4.4,&nbsp;<b>Poids , \u00c9l\u00e9vation<\/b> par rapport \u00e0 la base doivent \u00eatre d\u00e9finis par l&rsquo;utilisateur.&nbsp;<\/span><\/div>\n<ol>\n<li style=\"list-style-type: square\"><span class=\"colour\">Les autres param\u00e8tres, comme le coefficient sismique et les efforts dans l&rsquo;\u00e9l\u00e9ment, sont calcul\u00e9s conform\u00e9ment \u00e0 l&rsquo;EC8 Chapitre 4.3.5<br \/><\/span><\/li>\n<\/ol>\n<div><\/div>\n<\/div>\n<p><span class=\"font\"><span class=\"highlight\"><b><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">Coefficient sismique<\/span><\/span><\/b><\/span><\/span><\/p>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<p><span class=\"colour\">Selon <\/span><b><span class=\"colour\">EC8 4.3.5.2 (2)<\/span><\/b><span class=\"colour\">, le coefficient sismique <\/span><b><span class=\"colour\">Sa<\/span><\/b><span class=\"colour\"> est d\u00e9fini comme le<br \/>\n\u00ab coefficient sismique applicable aux \u00e9l\u00e9ments non structuraux \u00bb. Les<br \/>\nd\u00e9tails du calcul figurent \u00e0 l&rsquo;alin\u00e9a<\/span><b><span class=\"colour\"> 4.3.5.2 (3) <\/span><\/b><span class=\"colour\">qui donne la formule <\/span><b><span class=\"colour\">(4.25)<\/span><\/b><span class=\"colour\">&nbsp; ci-dessous.&nbsp;<br \/><\/span><\/p>\n<div>\n<h1>\n<div>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 0cm;line-height: normal\"><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-07ad49f46c59.png\" style=\"padding: 0px;max-width: 100%\"><span class=\"colour\"><br \/><\/span><\/p>\n<\/div>\n<\/h1>\n<\/div>\n<div>\n<div><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">\u03b1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/i><span><span class=\"colour\">: rapport entre l&rsquo;acc\u00e9l\u00e9ration de calcul sur un sol de type A, <\/span><\/span><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">\u03b1<\/span><sub><span class=\"colour\">g<\/span><\/sub><\/span><\/i><span><span class=\"colour\">,<br \/>\net l&rsquo;acc\u00e9l\u00e9ration de la pesanteur g<\/span><\/span><\/div>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;text-align: left;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">S<\/span><span><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><\/i><span><span class=\"colour\">: facteur de sol<\/span><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;text-align: left;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">T<\/span><sub><span class=\"colour\">a<\/span><span><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/sub><\/span><\/i><span><span class=\"colour\">: p\u00e9riode de vibration fondamentale de l&rsquo;\u00e9l\u00e9ment non structural<\/span><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;text-align: left;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">T<\/span><sub><span class=\"colour\">1<\/span><span><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/sub><\/span><\/i><span><span class=\"colour\">: p\u00e9riode de vibration fondamentale du b\u00e2timent dans la direction consid\u00e9r\u00e9e<\/span><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 35.4pt;text-align: left;text-indent: -35.25pt;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">z<\/span><span><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><\/i><span><span class=\"colour\">: hauteur de l&rsquo;\u00e9l\u00e9ment non<br \/>\nstructural au-dessus du niveau d&rsquo;application de l&rsquo;action<br \/> <\/span><span><span class=\"colour\">&nbsp; &nbsp;<\/span><\/span><span class=\"colour\">sismique<br \/>\n(fondation ou sommet d&rsquo;un sous-sol rigide)<\/span><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;text-align: left;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">H<\/span><span><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/span><\/i><span><span class=\"colour\">: hauteur du b\u00e2timent mesur\u00e9e depuis la fondation ou le sommet d&rsquo;un sous-sol rigide<\/span><\/span><\/p>\n<div><\/div>\n<div><\/div>\n<p><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-4c839a58459d.png\" style=\"padding: 0px;max-width: 100%\"><\/p>\n<div><\/div>\n<\/p>\n<h1 class=\"toc_anchors\" id=\"Seismic_Force\"><a name=\"_Toc63086714\"><\/a><a name=\"_Toc65159617\"><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">Force sismique<\/span><\/span><\/a><\/h1>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 0cm;line-height: normal\"><span class=\"colour\">Selon <\/span><b><span class=\"colour\">EC8 4.3.5.2 (2)<\/span><\/b><span class=\"colour\">, la force sismique horizontale F<\/span><sub><span class=\"colour\">a<\/span><\/sub><span class=\"colour\"> est d\u00e9finie comme \u00ab la force sismique horizontale agissant au centre de masse de<br \/>\nl&rsquo;\u00e9l\u00e9ment non structural, dans la direction la plus d\u00e9favorable \u00bb. Les d\u00e9tails du calcul<br \/>\nfigurent \u00e0 l&rsquo;alin\u00e9a <\/span><b><span class=\"colour\">4.3.5.2 (3)<\/span><\/b><span class=\"colour\"> qui donne la formule <\/span><b><span class=\"colour\">(4.24)<\/span><\/b><span class=\"colour\">&nbsp; ci-dessous.<\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 0cm;line-height: normal\"><span class=\"colour\">&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-56385f0e3c65.png\" style=\"padding: 0px;max-width: 100%\"><span class=\"colour\"><br \/><\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">S<\/span><sub><span class=\"colour\">a<\/span><\/sub><\/span><\/i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><span class=\"colour\">: coefficient<br \/>\nsismique applicable aux \u00e9l\u00e9ments non structuraux <\/span><span class=\"size\" style=\"font-size: 12pt\"><\/span><\/p>\n<div><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">W<\/span><sub><span class=\"colour\">a<\/span><\/sub><\/span><\/i><sub><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><\/sub><span class=\"colour\"> : Poids<br \/>\nde l&rsquo;\u00e9l\u00e9ment non structurel<\/span><span class=\"size\" style=\"font-size: 12pt\"><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">q<\/span><sub><span class=\"colour\">a<\/span><\/sub><\/span><\/i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><span class=\"colour\"> : Facteur de comportement<br \/>\nde l&rsquo;\u00e9l\u00e9ment non structurel<\/span><span class=\"size\" style=\"font-size: 12pt\"><\/span><\/p>\n<p><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;line-height: normal\"><i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">\u03b3<\/span><\/span><sub><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\">a<\/span><\/span><\/sub><\/i><span class=\"size\" style=\"font-size: 12pt\"><span class=\"colour\"> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/span><\/span><span class=\"colour\"> : Facteur d&rsquo;importance<br \/>\nde l&rsquo;\u00e9l\u00e9ment, selon <\/span><b><span class=\"colour\">EC8. 4.3.5.3<\/span><\/b><\/p>\n<div><b><br \/><\/b><\/div>\n<\/p>\n<h1 class=\"toc_anchors\" id=\"Summary\"><a name=\"_Toc63086715\"><\/a><a name=\"_Toc65159618\"><span class=\"colour\"><span class=\"size\" style=\"font-size: 24px;line-height: normal\">R\u00e9sum\u00e9<\/span><\/span><\/a><\/h1>\n<p class=\"MsoNormal\" style=\"margin-top: 6pt;margin-right: 0cm;margin-bottom: 0cm;margin-left: 0cm;line-height: normal\"><b><\/b><\/p>\n<div><span class=\"colour\"><\/span><\/p>\n<p class=\"MsoNormal\"><span class=\"colour\">Cet article explique le calcul des forces sismiques<br \/>\nagissant sur les \u00e9l\u00e9ments non structuraux selon <\/span><b><span class=\"colour\">EC8. Clause 4.3.5<\/span><\/b><span class=\"colour\">. Les r\u00e9sultats<br \/>\nde la macro \u00ab Calculateur de force des \u00e9l\u00e9ments non structuraux \u00bb sont<br \/>\nv\u00e9rifi\u00e9s par des calculs manuels.&nbsp;<\/span><\/p>\n<div><span class=\"colour\"><\/span><span><span class=\"colour\">ProtaStructure permet \u00e9galement de calculer les forces sismiques sur les \u00e9l\u00e9ments non structuraux&nbsp;selon (ASCE 7 &#8211; 16). L&rsquo;interface utilisateur et les d\u00e9tails de calcul sont fournis en pi\u00e8ce jointe.&nbsp;&nbsp;<\/span><\/span><\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div><\/div>\n<p><strong>T\u00e9l\u00e9chargements<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/ProtaStructure_Design_Guide_Seismic_Forces_on_Non_Structural_Members_ASCE07_16_.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">ProtaStructure_Design_Guide_Seismic_Forces_on_Non_Structural_Members_ASCE07_16_<\/a> (0.5 MB)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Introduction ProtaStructure calcule les efforts dans les \u00e9l\u00e9ments non structuraux conform\u00e9ment \u00e0 l&rsquo;EC8 Chapitre 4.3.5. Ce document d\u00e9taille le calcul de la force sismique des&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":[48],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2295","wiki","type-wiki","status-publish","hentry","category-structural-modelling"],"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>Forces sismiques sur les \u00e9l\u00e9ments non structuraux<\/title>\n<meta name=\"description\" content=\"Les forces sismiques agissent sur les \u00e9l\u00e9ments non structuraux : cloisons, plafonds et \u00e9quipements. 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