{"id":1999,"date":"2026-04-27T11:39:43","date_gmt":"2026-04-27T11:39:43","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/modificateurs-de-raideur-effective\/"},"modified":"2026-04-27T11:39:43","modified_gmt":"2026-04-27T11:39:43","slug":"modificateurs-de-raideur-effective","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/modificateurs-de-raideur-effective\/","title":{"rendered":"Modificateurs de raideur effective"},"content":{"rendered":"<p style=\"text-align: justify\" class=\"MsoNormal\"><span class=\"colour\">Dans ProtaStructure, les coefficients de raideur effective des dalles peuvent \u00eatre ajust\u00e9s selon la m\u00e9thode d&rsquo;analyse. <\/span><\/p>\n<div><span class=\"colour\">La premi\u00e8re m\u00e9thode consiste \u00e0&nbsp;<\/span><strong><span><span class=\"colour\">utiliser l&rsquo;option \u00ab Analyse par \u00e9l\u00e9ments finis des planchers \u00bb ind\u00e9pendamment du b\u00e2timent, sous charges verticales uniquement.<\/span><\/span><\/strong><span class=\"colour\">&nbsp;Cette m\u00e9thode analyse les planchers en les isolant du mod\u00e8le analytique du b\u00e2timent. Tous les cas de charges horizontales sont ignor\u00e9s. Seules les d\u00e9formations hors plan sont donc calcul\u00e9es.&nbsp;<\/span><\/div>\n<div><\/div>\n<div><span><span class=\"colour\">La seconde m\u00e9thode est l&rsquo;<\/span><\/span><strong><span><span class=\"colour\">analyse par \u00e9l\u00e9ments finis int\u00e9grant les dalles dans le mod\u00e8le global du b\u00e2timent, pour toutes les combinaisons de charges<\/span><\/span><\/strong><span><span class=\"colour\">.<\/span><\/span><strong><span><span class=\"colour\">&nbsp;<\/span><\/span><\/strong><span><span class=\"colour\">Cette m\u00e9thode inclut les dalles dans le mod\u00e8le du b\u00e2timent et ex\u00e9cute l&rsquo;analyse pour toutes les combinaisons de charges. L&rsquo;option de section fissur\u00e9e peut \u00eatre appliqu\u00e9e aux combinaisons contenant des cas de charge de s\u00e9isme, de vent, de pouss\u00e9e des terres ou de diff\u00e9rence de temp\u00e9rature.<\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\"> <\/span><\/div>\n<div><span class=\"colour\">Les coefficients de raideur des sections fissur\u00e9es d\u00e9finis dans le code sismique turc sont cr\u00e9\u00e9s et utilis\u00e9s automatiquement. Pour les autres codes, ces coefficients doivent \u00eatre renseign\u00e9s. Pour les sections non fissur\u00e9es, l&rsquo;utilisateur saisit les coefficients de raideur des dalles dans le champ pr\u00e9vu.&nbsp;<\/span><span><span class=\"colour\">Dans cet article, le mod\u00e8le \u00e9tudi\u00e9 selon les deux m\u00e9thodes d&rsquo;analyse est export\u00e9 vers SAP2000 puis analys\u00e9 \u00e0 nouveau, une m\u00e9thode apr\u00e8s l&rsquo;autre.<\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<div><\/div>\n<div><span><span class=\"colour\">Nous vous proposons ce guide de calcul en esp\u00e9rant qu&rsquo;il vous sera utile. Vous trouverez le guide au format PDF en pi\u00e8ce jointe.<\/span><\/span><\/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-Effective-Stiffness-Modifiers.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Guide de calcul ProtaStructure &#8211; Coefficients de raideur effective<\/a> (1.8 MB)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Dans ProtaStructure, les coefficients de raideur effective des dalles peuvent \u00eatre ajust\u00e9s selon la m\u00e9thode d&rsquo;analyse. La premi\u00e8re m\u00e9thode consiste \u00e0&nbsp;utiliser l&rsquo;option \u00ab Analyse par&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":[54],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-1999","wiki","type-wiki","status-publish","hentry","category-protastructure-design-guides"],"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>Modificateurs de raideur effective<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment appliquer les modificateurs de raideur effective dans ProtaStructure pour les poteaux, poutres et voiles en b\u00e9ton arm\u00e9 fissur\u00e9.\" \/>\n<meta name=\"robots\" content=\"index, follow, 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