{"id":194,"date":"2024-09-17T21:18:56","date_gmt":"2024-09-17T21:18:56","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/blog\/ingenierie-parasismique-avancee-protastructure-2025\/"},"modified":"2024-09-17T21:18:56","modified_gmt":"2024-09-17T21:18:56","slug":"ingenierie-parasismique-avancee-protastructure-2025","status":"publish","type":"post","link":"https:\/\/protasoftware.com\/fr\/blog\/ingenierie-parasismique-avancee-protastructure-2025\/","title":{"rendered":"Ing\u00e9nierie parasismique avanc\u00e9e dans ProtaStructure 2025 : analyse sismique verticale et pushover modal"},"content":{"rendered":"<p><span style=\"font-size: 16px;\">L\u2019ing\u00e9nierie parasismique franchit une \u00e9tape avec ProtaStructure 2025 et ses outils d\u00e9di\u00e9s aux situations sismiques complexes. Avec l\u2019<\/span><strong style=\"font-size: 16px;\">analyse sismique verticale<\/strong><span style=\"font-size: 16px;\"> et le <\/span><strong style=\"font-size: 16px;\">pushover modal<\/strong><span style=\"font-size: 16px;\">, ProtaStructure met des solutions in\u00e9dites entre les mains des ing\u00e9nieurs. Ces avanc\u00e9es allient pr\u00e9cision et souplesse pour mieux pr\u00e9parer les b\u00e2timents aux actions sismiques.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-191 size-full\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3.webp\" alt=\"Ing\u00e9nierie parasismique avanc\u00e9e\" width=\"1080\" height=\"1080\" srcset=\"https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3.webp 1080w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3-300x300.webp 300w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3-1024x1024.webp 1024w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3-150x150.webp 150w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/1-3-768x768.webp 768w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/p>\n<h3>Analyse sismique verticale : deux approches pour les situations complexes<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-192 size-full\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1.webp\" alt=\"Ing\u00e9nierie parasismique avanc\u00e9e \u2013 analyse non lin\u00e9aire\" width=\"1080\" height=\"1080\" srcset=\"https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1.webp 1080w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1-300x300.webp 300w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1-1024x1024.webp 1024w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1-150x150.webp 150w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/4-1-768x768.webp 768w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/p>\n<p>ProtaStructure 2025 introduit les effets sismiques verticaux dans le calcul et am\u00e9liore ainsi la pr\u00e9cision. Deux m\u00e9thodes sont propos\u00e9es, selon la complexit\u00e9 de l\u2019ouvrage.<\/p>\n<ol>\n<li>\n<h4><strong>L\u2019approche statique approch\u00e9e<\/strong><\/h4>\n<ul>\n<li>Cette m\u00e9thode simplifi\u00e9e multiplie les r\u00e9sultats sous charges gravitaires par une fraction de l\u2019acc\u00e9l\u00e9ration spectrale horizontale (par exemple 0,2SDS). Elle ne prend en compte ni les modes de vibration verticaux ni un spectre vertical d\u00e9di\u00e9, mais reste tr\u00e8s efficace pour un large \u00e9ventail d\u2019ouvrages.<\/li>\n<li><strong>Quand la choisir ?<\/strong> Elle convient aux structures peu irr\u00e9guli\u00e8res, sans \u00e9l\u00e9ments particuliers comme des poteaux de transfert ou de longs porte-\u00e0-faux. Elle apporte une r\u00e9ponse directe sans recourir \u00e0 une analyse sismique avanc\u00e9e.<\/li>\n<\/ul>\n<\/li>\n<li>\n<h4><strong>La m\u00e9thode d\u2019analyse spectrale modale<\/strong><\/h4>\n<p>Cette m\u00e9thode met \u00e0 l\u2019\u00e9chelle les r\u00e9sultats sous charges gravitaires par une fraction de l\u2019acc\u00e9l\u00e9ration spectrale horizontale. Elle n\u2019int\u00e8gre ni les modes verticaux ni un spectre vertical d\u00e9di\u00e9, mais reste tr\u00e8s efficace sur une large gamme de projets.<\/p>\n<p>Retenez-la pour des structures peu irr\u00e9guli\u00e8res, sans \u00e9l\u00e9ments complexes comme des poteaux de transfert. Elle offre une solution directe, sans analyse sismique avanc\u00e9e.<\/li>\n<\/ol>\n<p>L\u2019ing\u00e9nieur choisit la m\u00e9thode adapt\u00e9e, dans le respect des codes sismiques internationaux. Pour approfondir, le <a href=\"https:\/\/protasoftware.com\/wiki\/vertical-earthquake-effects\/\"><strong><em>guide de calcul ProtaStructure \u2013 effets sismiques verticaux<\/em><\/strong><\/a> propose conseils de mod\u00e9lisation et recommandations.<\/p>\n<h3>Pushover modal : plus de pr\u00e9cision, sans complexit\u00e9 inutile<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-193 size-full\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1.webp\" alt=\"Ing\u00e9nierie parasismique avanc\u00e9e\" width=\"1080\" height=\"1080\" srcset=\"https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1.webp 1080w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1-300x300.webp 300w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1-1024x1024.webp 1024w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1-150x150.webp 150w, https:\/\/protasoftware.com\/fr\/wp-content\/uploads\/sites\/5\/2026\/09\/3-1-768x768.webp 768w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><\/p>\n<p>L\u2019<em>analyse pushover<\/em> classique peine \u00e0 \u00e9valuer correctement les b\u00e2timents \u00e9lev\u00e9s ou complexes. ProtaStructure 2025 r\u00e9pond \u00e0 cette limite avec le <strong><em>pushover modal (MPA)<\/em><\/strong>, une solution \u00e0 la fois fine et accessible. Fond\u00e9e sur la m\u00e9thodologie de Chopra et Goel (2002), elle comble l\u2019\u00e9cart entre le <em>pushover monomodal<\/em> et l\u2019<em>analyse temporelle non lin\u00e9aire<\/em>.<\/p>\n<ul>\n<li><strong>Principe<\/strong> : ProtaStructure 2025 conduit une analyse pushover pour chaque mode significatif, puis combine les r\u00e9sultats par la m\u00e9thode CQC. L\u2019\u00e9valuation reste juste, m\u00eame pour des b\u00e2timents sensibles aux modes sup\u00e9rieurs ou de g\u00e9om\u00e9trie irr\u00e9guli\u00e8re.<\/li>\n<li><strong>Int\u00e9r\u00eat<\/strong> : pour les immeubles de grande hauteur ou pr\u00e9sentant une irr\u00e9gularit\u00e9 en torsion, le pushover modal \u00e9value plus finement la performance sismique sans la lourdeur d\u2019une analyse temporelle compl\u00e8te.<\/li>\n<\/ul>\n<p>Cette fonction fait de ProtaStructure 2025 un outil pr\u00e9cieux pour le calcul sismique moderne.<\/p>\n<h3><strong>\u00c9valuation du b\u00e2ti et dimensionnement en performance<\/strong><\/h3>\n<p>ProtaStructure 2025 va au-del\u00e0 du calcul sismique courant et facilite l\u2019\u00e9valuation des b\u00e2timents :<\/p>\n<ul>\n<li><strong>Traitement des r\u00e9sultats acc\u00e9l\u00e9r\u00e9<\/strong> : les r\u00e9sultats d\u2019analyse non lin\u00e9aire se traitent plus vite.<\/li>\n<li><strong>Mod\u00e9lisation non lin\u00e9aire par \u00e9l\u00e9ment<\/strong> : l\u2019ing\u00e9nieur affecte des propri\u00e9t\u00e9s non lin\u00e9aires \u00e0 des \u00e9l\u00e9ments pr\u00e9cis et garde la main sur son mod\u00e8le.<\/li>\n<li><strong>Ferraillage estim\u00e9 par \u00e9l\u00e9ment<\/strong> : la saisie de valeurs estim\u00e9es pour certains \u00e9l\u00e9ments permet de refl\u00e9ter la r\u00e9alit\u00e9 du terrain dans l\u2019analyse.<\/li>\n<\/ul>\n<p>Ces am\u00e9liorations facilitent les \u00e9valuations structurelles complexes.<\/p>\n<h3><strong>Performances optimis\u00e9es<\/strong><\/h3>\n<p>Outre ses nouvelles fonctions, ProtaStructure 2025 a \u00e9t\u00e9 optimis\u00e9 :<\/p>\n<ul>\n<li><strong>Traitement parall\u00e8le avec OpenSees<\/strong> : les \u00e9valuations sismiques de grande ampleur s\u2019ex\u00e9cutent plus rapidement.<\/li>\n<li><strong>Meilleure convergence<\/strong> : certains \u00e9l\u00e9ments comme les murs de sous-sol et les porte-\u00e0-faux sont suppos\u00e9s \u00e9lastiques lin\u00e9aires pendant l\u2019\u00e9valuation non lin\u00e9aire, ce qui r\u00e9duit les probl\u00e8mes de convergence.<\/li>\n<li><strong>M\u00e9moire et performances<\/strong> : le stockage des r\u00e9sultats d\u2019analyse temporelle a \u00e9t\u00e9 optimis\u00e9, sans perte de pr\u00e9cision. L\u2019utilisateur r\u00e8gle la r\u00e9solution des r\u00e9sultats enregistr\u00e9s selon ses besoins.<\/li>\n<\/ul>\n<p>Avec ces \u00e9volutions, ProtaStructure 2025 conserve sa place parmi les logiciels de r\u00e9f\u00e9rence du calcul sismique.<\/p>\n<p>Guides d\u00e9taill\u00e9s, webinaires et ressources suivront pour exploiter pleinement ces nouveaut\u00e9s.<\/p>\n<p><span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/www.youtube.com\/watch?v=FCTjB4myJqU\"><strong>D\u00e9couvrez les nouveaut\u00e9s de ProtaStructure Suite 2025 sur notre cha\u00eene YouTube<\/strong><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u2019ing\u00e9nierie parasismique franchit une \u00e9tape avec ProtaStructure 2025 et ses outils d\u00e9di\u00e9s aux situations sismiques complexes. Avec l\u2019analyse sismique verticale et le pushover modal, ProtaStructure&hellip;<\/p>\n","protected":false},"author":1,"featured_media":195,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_whitepaper_youtube_videos":"","_whitepaper_youtube_url":"","_whitepaper_youtube_thumbnail":"","footnotes":""},"categories":[3],"tags":[],"content_topic":[],"content_product":[],"content_region":[],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-194","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"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>Ing\u00e9nierie parasismique avanc\u00e9e dans ProtaStructure 2025<\/title>\n<meta name=\"description\" content=\"ProtaStructure 2025 propose l\u2019analyse sismique verticale et le 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