{"id":2385,"date":"2020-04-07T20:54:32","date_gmt":"2020-04-07T20:54:32","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/effet-de-deformation-axiale-differentielle-dade-dans-l-analyse-3d-des-batiments\/"},"modified":"2020-04-07T20:54:32","modified_gmt":"2020-04-07T20:54:32","slug":"effet-de-deformation-axiale-differentielle-dade-dans-l-analyse-3d-des-batiments","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/effet-de-deformation-axiale-differentielle-dade-dans-l-analyse-3d-des-batiments\/","title":{"rendered":"Effet de d\u00e9formation axiale diff\u00e9rentielle (DADE) dans l&rsquo;analyse 3D des b\u00e2timents"},"content":{"rendered":"<h6><strong>R\u00e9sum\u00e9<\/strong><\/h6>\n<h3>Comprendre l&rsquo;effet des d\u00e9formations axiales diff\u00e9rentielles<\/h3>\n<p>Ce guide de calcul traite de l&rsquo;<strong>effet des d\u00e9formations axiales diff\u00e9rentielles (DADE)<\/strong> des poteaux et des voiles. Il faut le prendre en compte dans l&rsquo;analyse 3D des b\u00e2timents \u00e0 \u00e9tages multiples. Le DADE d\u00e9signe les d\u00e9formations axiales variables des \u00e9l\u00e9ments porteurs. Elles proviennent des diff\u00e9rences de raideur, de r\u00e9partition des charges et de propri\u00e9t\u00e9s g\u00e9om\u00e9triques. Ces variations peuvent produire des diagrammes d&rsquo;efforts inattendus, notamment des moments fl\u00e9chissants dans les poutres du dernier \u00e9tage.<\/p>\n<h3>Causes et impact du DADE<\/h3>\n<p>Le DADE appara\u00eet g\u00e9n\u00e9ralement dans les b\u00e2timents \u00e0 \u00e9tages multiples dont les \u00e9l\u00e9ments porteurs, poteaux et voiles, pr\u00e9sentent des raideurs diff\u00e9rentes. Ces \u00e9carts entra\u00eenent un partage in\u00e9gal des charges et donc des d\u00e9formations axiales diff\u00e9rentielles. Le ph\u00e9nom\u00e8ne peut nuire nettement au comportement global de la structure. Il cr\u00e9e :<\/p>\n<ul>\n<li>des distributions d&rsquo;efforts inattendues dans les poutres ;<\/li>\n<li>des moments fl\u00e9chissants suppl\u00e9mentaires, surtout dans les poutres du dernier \u00e9tage ;<\/li>\n<li>des difficult\u00e9s \u00e0 obtenir des chemins de charges optimaux et \u00e0 garantir la s\u00e9curit\u00e9 de la structure.<\/li>\n<\/ul>\n<h3>M\u00e9thodes pour att\u00e9nuer l&rsquo;effet des d\u00e9formations axiales diff\u00e9rentielles<\/h3>\n<p>Le guide pr\u00e9sente des techniques pratiques pour r\u00e9duire le DADE :<\/p>\n<ol>\n<li><strong>Ajustement de la raideur avec le facteur d&rsquo;aire<\/strong> : ajuster la raideur des \u00e9l\u00e9ments porteurs \u00e9quilibre la r\u00e9partition des charges et r\u00e9duit les d\u00e9formations diff\u00e9rentielles.<\/li>\n<li><strong>Analyse par \u00e9l\u00e9ments finis (EF) des planchers<\/strong> : l&rsquo;analyse EF avanc\u00e9e donne des r\u00e9sultats pr\u00e9cis. Elle tient compte des variations de raideur et des propri\u00e9t\u00e9s des mat\u00e9riaux.<\/li>\n<\/ol>\n<p>Ces deux m\u00e9thodes aident l&rsquo;ing\u00e9nieur \u00e0 att\u00e9nuer les effets du DADE. Elles garantissent la stabilit\u00e9 de la structure et une meilleure conformit\u00e9 aux intentions de calcul.<\/p>\n<h3>\u00c0 qui s&rsquo;adresse ce guide ?<\/h3>\n<p>Ce guide est pr\u00e9cieux si vos calculs de b\u00e2timents \u00e0 \u00e9tages multiples donnent des diagrammes d&rsquo;efforts ou des moments fl\u00e9chissants inattendus, notamment dans les poutres du dernier \u00e9tage. Il fournit des pistes concr\u00e8tes pour diagnostiquer et r\u00e9soudre ces difficult\u00e9s.<\/p>\n<h3>Applications concr\u00e8tes<\/h3>\n<p>D\u00e9couvrez comment les ing\u00e9nieurs du monde entier traitent le DADE et d&rsquo;autres difficult\u00e9s de calcul avec <strong>ProtaStructure<\/strong> :<\/p>\n<ul>\n<li>Consultez notre <a href=\"https:\/\/protasoftware.com\/community\/projects-gallery\/\" target=\"_new\" rel=\"noopener\"><strong>galerie de projets<\/strong><\/a> pour d\u00e9couvrir des structures r\u00e9elles mod\u00e9lis\u00e9es avec ProtaStructure.<\/li>\n<li>Lisez les <a href=\"https:\/\/protasoftware.com\/community\/client-success\/\" target=\"_new\" rel=\"noopener\"><strong>t\u00e9moignages de r\u00e9ussite de nos clients<\/strong><\/a>, qui pr\u00e9sentent des solutions innovantes.<\/li>\n<\/ul>\n<h3>Avantages de la prise en compte du DADE<\/h3>\n<p>En comprenant et en att\u00e9nuant le DADE, l&rsquo;ing\u00e9nieur peut :<\/p>\n<ul>\n<li>am\u00e9liorer la pr\u00e9cision des diagrammes d&rsquo;efforts et des chemins de charges ;<\/li>\n<li>renforcer la s\u00e9curit\u00e9 et le comportement global des structures \u00e0 \u00e9tages multiples ;<\/li>\n<li>gagner du temps et des ressources dans le calcul et l&rsquo;analyse des structures.<\/li>\n<\/ul>\n<p>\t\t\t<a href=\"https:\/\/cdn.protasoftware.com\/documents\/whitepaper\/protastructure-design-guide-dade.pdf\" target=\"_blank\" rel=\"noopener\"><br \/>\n    Ouvrir le document<br \/>\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>R\u00e9sum\u00e9 Comprendre l&rsquo;effet des d\u00e9formations axiales diff\u00e9rentielles Ce guide de calcul traite de l&rsquo;effet des d\u00e9formations axiales diff\u00e9rentielles (DADE) des poteaux et des voiles. Il&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-2385","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>Effet de d\u00e9formation axiale diff\u00e9rentielle dans les b\u00e2timents \u00e0 \u00e9tages<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez l&#039;effet de d\u00e9formation axiale diff\u00e9rentielle dans les b\u00e2timents \u00e0 \u00e9tages : ajustement de la raideur et analyse de plancher par \u00e9l\u00e9ments finis.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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