{"id":2107,"date":"2026-04-27T12:03:12","date_gmt":"2026-04-27T12:03:12","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/types-de-modeles-de-poteaux-et-de-voiles-facteurs-de-raideur-fissuration-et-fluage\/"},"modified":"2026-04-27T12:03:12","modified_gmt":"2026-04-27T12:03:12","slug":"types-de-modeles-de-poteaux-et-de-voiles-facteurs-de-raideur-fissuration-et-fluage","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/types-de-modeles-de-poteaux-et-de-voiles-facteurs-de-raideur-fissuration-et-fluage\/","title":{"rendered":"Types de mod\u00e8les de poteaux et de voiles : facteurs de raideur, fissuration et fluage"},"content":{"rendered":"<h2 id=\"Stiffness_Factors_Introduction\" class=\"toc_anchors\"><span><span class=\"colour\">Introduction aux coefficients de raideur<\/span><\/span><\/h2>\n<div><span class=\"colour\">Les coefficients de raideur des poutres, dalles, poteaux et voiles peuvent \u00eatre d\u00e9finis automatiquement pour tenir compte de la fissuration et du fluage.&nbsp; Un calcul automatique est pr\u00e9vu \u00e0 cet effet, comme expliqu\u00e9 ci-dessous : Calculateur de fissuration et de fluage<br \/><\/span><\/div>\n<div><\/div>\n<div><span>Les coefficients de raideur peuvent aussi \u00eatre d\u00e9finis individuellement pour une flexibilit\u00e9 maximale.<\/span><\/div>\n<div><span style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\" class=\"KB_New_Editor_Highlights\"><img decoding=\"async\" alt=\"Idea\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c7cebc83cbd5232e3b9c5b5fd260da60.png\" data-type=\"non-resize\" style=\"position: absolute;left: 12px;top: 14px;width: 15px;max-width: 100%\" data-image=\"contentStyle\"><\/p>\n<div><span class=\"colour\">Il est conseill\u00e9 de lire aussi le document<\/span>&nbsp;<a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/effective-stiffness-modifiers\" rel=\"noopener noreferrer\">Modificateurs de raideur effective<\/a>&nbsp;<span class=\"colour\">(guide de calcul). <br \/>L&rsquo;exemple donn\u00e9 dans ce guide aide \u00e0 expliquer le concept&nbsp;<\/span><span><span class=\"colour\">aux utilisateurs.&nbsp;&nbsp;<\/span><\/span><\/div>\n<p><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">Comme expliqu\u00e9 dans l&rsquo;article cit\u00e9 plus haut et dans l&rsquo;article<\/span>&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/article-7-10-2020\" target=\"_blank\" rel=\"noopener noreferrer\">Organigramme de mod\u00e9lisation, d&rsquo;analyse et de calcul<\/a>,<span class=\"colour\"> il existe 2 voies d&rsquo;analyse pour obtenir les efforts des \u00e9l\u00e9ments et des dalles :<\/span><\/div>\n<blockquote class=\"zde_indent\">\n<div><span class=\"colour\">1.&nbsp; Analyse du b\u00e2timent avec maillage possible de la dalle de plancher.&nbsp;<\/span><\/div>\n<div><span class=\"colour\">&nbsp; &nbsp; &nbsp;<\/span><span>&#8211; Ouvrez le ruban<b> Analyse<\/b>&nbsp;&gt;&nbsp; cliquez sur <b>Analyse du b\u00e2timent<\/b> &gt;&nbsp;onglet<b> Options du mod\u00e8le<\/b> &gt; onglet <b>Mod\u00e8le de dalle <\/b>&gt; cochez l&rsquo;option <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/model-options#Include_Slabs_in_Building_Model_-_Finite_Elements_Mesh:~:text=Diaphragm%20Modelling%20Example-,Include%20Slabs%20in%20Building%20Model%20%2D%20Finite%20Elements%20Mesh,-This%20option%20can\" rel=\"noopener noreferrer\">Inclure les dalles dans le mod\u00e8le<\/a><\/span><\/div>\n<div><span>2.&nbsp; Analyse EF des planchers, o\u00f9 les dalles doivent \u00eatre maill\u00e9es.&nbsp;&nbsp;<\/span><\/div>\n<div><span>&nbsp; &nbsp; &#8211;&nbsp; Ouvrez le ruban Analyse &gt; cliquez sur <a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/finite-elements-floor-analysis-ps2022\" rel=\"noopener noreferrer\">Analyse EF des planchers<\/a><\/span><\/div>\n<\/blockquote>\n<div><span class=\"colour\">Pour la 2e m\u00e9thode, la bo\u00eete de dialogue Analyse EF des planchers contient une fonction d&rsquo;estimation du coefficient de fissuration et de fluage (voir ci-dessous).<\/span><\/div>\n<div><\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"best\" class=\"docsimage\" data-zdeskdocid=\"img_01139208252075763\" style=\"max-width: 100%;padding: 0px;width: 616px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-1a7cb090d92651d328baaede9ec4813b.png\"><\/div>\n<div><\/div>\n<h2 class=\"toc_anchors\" id=\"Cracking__Creep_Calculator\"><span><span class=\"colour\">Calculateur de fissuration et de fluage&nbsp;<\/span><\/span><\/h2>\n<div><span class=\"colour\">Le bouton <\/span><i><span class=\"colour\">\u00ab Fissuration et fluage \u00bb<\/span><\/i><span class=\"colour\"> sert \u00e0 calculer un coefficient de raideur, appliqu\u00e9 ensuite au mod\u00e8le EF. Ce coefficient tient compte du fluage, de la fissuration et du retrait pour estimer la fl\u00e8che totale \u00e0 long terme de la dalle en b\u00e9ton.&nbsp; <br \/><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">Points cl\u00e9s \u00e0 retenir pour la fl\u00e8che totale \u00e0 long terme d&rsquo;une dalle en b\u00e9ton : <br \/><\/span><\/div>\n<ol>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">La fl\u00e8che totale estim\u00e9e s&rsquo;obtient en examinant la combinaison G+Q*F.<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Les coefficients de raideur propos\u00e9s int\u00e8grent aussi les coefficients de charge. Les fl\u00e8ches affich\u00e9es sont une estimation \u00e0 l&rsquo;\u00e9tat limite de service. (Aucun ajustement suppl\u00e9mentaire des fl\u00e8ches n&rsquo;est n\u00e9cessaire.)<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Si vous appliquez l&rsquo;ajustement de raideur propos\u00e9, consulter s\u00e9par\u00e9ment les fl\u00e8ches de G ou de Q n&rsquo;a aucun int\u00e9r\u00eat.&nbsp; (Ces r\u00e9sultats restent visibles pour les ing\u00e9nieurs qui estiment la fl\u00e8che avec leurs propres m\u00e9thodes et d&rsquo;autres coefficients.)<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Le fluage et la fissuration n&rsquo;affectent pas de la m\u00eame fa\u00e7on les charges permanentes et les charges d&rsquo;exploitation. C&rsquo;est une autre raison de n&rsquo;utiliser les courbes de fl\u00e8che s\u00e9par\u00e9es de G et de Q qu&rsquo;avec une extr\u00eame prudence, voire pas du tout.<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Si la fl\u00e8che totale obtenue par cette m\u00e9thode d\u00e9passe port\u00e9e\/250, la dalle peut en g\u00e9n\u00e9ral \u00eatre jug\u00e9e trop mince.<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Prota consid\u00e8re que cette approche simple, \u00e9prouv\u00e9e et admise reste la plus pragmatique dans la plupart des cas. (Pour plus d&rsquo;informations, voir le guide du Concrete Centre \u00ab Comment calculer des planchers-dalles en b\u00e9ton arm\u00e9 par analyse en \u00e9l\u00e9ments finis \u00bb.)<br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">On \u00e9voque parfois l&rsquo;ajout d&rsquo;armatures pour ma\u00eetriser la fl\u00e8che.&nbsp; Cela demande une approche plus th\u00e9orique, qui doit l\u00e0 encore prendre en compte le fluage, la fissuration et le retrait.&nbsp; Nos recherches montrent que cette approche ne permet pas de d\u00e9montrer facilement l&rsquo;acceptabilit\u00e9 d&rsquo;\u00e9paisseurs de dalle toujours admises sans armatures suppl\u00e9mentaires.&nbsp; Il faut aussi ajouter beaucoup d&rsquo;armatures pour modifier la fl\u00e8che de quelques pour cent seulement.&nbsp; Un usage syst\u00e9matique de cette approche peut donc conduire \u00e0 une sp\u00e9cification inutile d&rsquo;armatures suppl\u00e9mentaires.<\/span><\/li>\n<\/ol>\n<div><b><u><span class=\"colour\">Pour calculer le coefficient de raideur \u00e0 appliquer :<\/span><\/u><\/b><\/div>\n<div> <b><u><br \/><\/u><\/b><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-fde8590980a6.png\" style=\"padding: 0px;max-width: 100%;height: auto\" class=\"docsimage\" data-zdeskdocid=\"img_45541609534658267\" data-zdeskdocselectedclass=\"original\"><\/div>\n<ol>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Choisissez le <\/span><i><span class=\"colour\">\u00ab Type de charge \u00bb<\/span><\/i><span class=\"colour\"> (Habitation\/Bureaux ou Stockage).<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Saisissez la <\/span><i><span class=\"colour\">\u00ab Charge permanente moyenne\/typique \u00bb<\/span><\/i><span class=\"colour\"> de l&rsquo;\u00e9tage courant.<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Saisissez la <\/span><i><span class=\"colour\">\u00ab Charge d&rsquo;exploitation moyenne\/typique \u00bb<\/span><\/i><span class=\"colour\"> de l&rsquo;\u00e9tage courant.<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<ol>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Une plage sugg\u00e9r\u00e9e de coefficient de raideur est calcul\u00e9e \u00e0 partir de ces donn\u00e9es. Cette plage d\u00e9pend aussi de la norme utilis\u00e9e pour le calcul.<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<\/ol>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Le <\/span><i><span class=\"colour\">\u00ab Coefficient de raideur \u00e0 appliquer \u00bb<\/span><\/i><span class=\"colour\"> s&rsquo;affiche en bas de la bo\u00eete de dialogue. Par d\u00e9faut, c&rsquo;est la valeur la plus basse de la plage sugg\u00e9r\u00e9e.<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<li style=\"list-style-type: decimal\"><span class=\"colour\">Cliquez sur le bouton <\/span><i><span class=\"colour\">\u00ab OK \u00bb<\/span><\/i><span class=\"colour\"> pour appliquer le coefficient de raideur.<\/span><\/li>\n<\/ol>\n<div><span class=\"colour\">Sur la page Pr\u00e9paration du mod\u00e8le, les coefficients de raideur des poutres, dalles, poteaux et voiles prennent maintenant la valeur calcul\u00e9e.<\/span><\/div>\n<div><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-f847c88c3d55bad8da64a41d3f765e8e.png\" style=\"padding: 0px;max-width: 100%;width: 543.5px;height: auto\" data-zdeskdocid=\"img_3930011322417757\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div><\/div>\n<div>\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-0f383b2c835314fe84a277f0ff7ad4fc.png\"><\/p>\n<div><span class=\"colour\">Les ajustements de raideur sont conformes \u00e0 la r\u00e9f\u00e9rence :<b>&nbsp;<\/b><\/span><span><i><span class=\"colour\"><b>\u2018The Concrete Centre, \u00ab Comment calculer des planchers-dalles en b\u00e9ton arm\u00e9 par analyse en \u00e9l\u00e9ments finis \u00bb\u2019<\/b><\/span><\/i><\/span><span class=\"colour\"><b>&nbsp;<\/b>de O. Brooker, mai 2006 (HTFS en abr\u00e9g\u00e9).<br \/><\/span><\/div>\n<ol>\n<li class=\"sty__clje5g__cls\" style=\"margin: 0px;padding: 0px;list-style-type: disc\"><span class=\"colour\">Le fluage, la fissuration et le retrait affectent tous la fl\u00e8che \u00e0 long terme du b\u00e9ton.<br \/><\/span><\/li>\n<li class=\"sty__a8pt9w__cls\" style=\"margin: 0px;padding: 0px;list-style-type: disc\"><span class=\"colour\">Le module E \u00e0 court terme (Est) doit \u00eatre r\u00e9duit pour tenir compte de ces facteurs. Une valeur \u00e0 long terme (Elt) doit \u00eatre utilis\u00e9e dans l&rsquo;analyse.<\/span><\/li>\n<li class=\"sty__40cw81__cls\" style=\"margin: 0px;padding: 0px;list-style-type: disc\"><span class=\"colour\">La prise en compte automatique de la fissuration et du fluage dans ProtaStructure suit les recommandations ci-dessus. La plage de coefficients sugg\u00e9r\u00e9e convertit le d\u00e9placement de la combinaison pond\u00e9r\u00e9e en une estimation de service de la fl\u00e8che totale \u00e0 long terme.<\/span><\/li>\n<\/ol>\n<p><\/span><\/div>\n<h2 class=\"toc_anchors\" id=\"Calculation_for_Stiffness_Factor_to_Apply\"><span class=\"colour\">Calcul du facteur de raideur \u00e0 appliquer<\/span><span class=\"colour\"><br \/><\/span><\/h2>\n<div>\n<table cellpadding=\"0\" cellspacing=\"0\" class=\"sty__euiiyo__cls\" style=\"text-align: initial;max-width: 100%;font-size: 12px;border: 1px solid;height: 245px\">\n<tbody>\n<tr>\n<td class=\"sty__uyivnw__cls\" style=\"border-bottom: 1px solid;height: 26.5556px;width: 89px\">\n<div class=\" align-center sty__a128rj__cls\" style=\"text-align: center\"><span><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Notation<\/span><\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__5uuxw6__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;height: 26.5556px;width: 315px\">\n<div><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\"><br \/><\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__31hrly__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__ynfzni__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">G<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__5i2xit__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__d7fjkk__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Charge permanente moyenne typique<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__by8d4y__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__5cdef8__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Q<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__zzjj9w__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__7wfyez__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Charge d&rsquo;exploitation moyenne typique<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__j2mhi8__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__zbe1ly__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Cg<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__6swt5a__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__l4s3je__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Facteur de charge permanente<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__hk4yvl__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__f82qqb__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Cq<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__gysmqu__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__im5c1s__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Facteur de charge d&rsquo;exploitation<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__9jotab__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__2uztj8__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">MCSF<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__cwugku__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__2pbkhb__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Facteur de raideur le plus prudent<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__fj2gb6__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__osdtb3__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">LCSF<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__9rba3f__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__3wrmev__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Facteur de raideur le moins prudent<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__fs5k5r__cls\" style=\"border-bottom: 1px solid;width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__9asgt8__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">SR_lower<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__utviwq__cls\" style=\"border-bottom: 1px solid;border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__mmn79y__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Valeur inf\u00e9rieure de la plage sugg\u00e9r\u00e9e<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"sty__j55itl__cls\" style=\"width: 89px;height: 26.5556px\">\n<div class=\" align-center sty__t3sxch__cls\" style=\"text-align: center\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">SR_upper<\/span><\/span><\/div>\n<\/td>\n<td class=\"sty__u7m0qn__cls\" style=\"border-left: 1px solid;width: 315px;height: 26.5556px;text-align: center\">\n<div class=\" align-center sty__zl14eq__cls\"><span style=\"font-size: 16px\" class=\"size\"><span class=\"colour\">Valeur sup\u00e9rieure de la plage sugg\u00e9r\u00e9e<\/span><\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div><\/div>\n<div>\n<div><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><u>1) Calculer le rapport de charges<\/u><\/span><\/span><span style=\"font-size: 16px\" class=\"size\"><u><br \/><\/u><\/span><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-d51519d698bcc7cbf02f40660fa67d76.png\" data-zdeskdocid=\"img_4989100765128549\" class=\"docsimage sty__lbw4fq__cls\" data-zdeskdocselectedclass=\"\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 317px;height: auto;cursor: pointer\"><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><u><span class=\"colour\">2) Calculer les facteurs de raideur<\/span><br \/><\/u><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp;<br \/><\/span><\/div>\n<div><span><span style=\"font-size: 16px\" class=\"size\"><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/b><\/span><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><b>a) Logements \/ Bureaux<\/b><\/span><\/span><span style=\"font-size: 16px\" class=\"size\"><b><br \/><\/b><\/span><\/span><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-f787a3635834dff0f8badd153ddf5a0f.png\" data-zdeskdocid=\"img_655941824449453\" class=\"docsimage sty__l13y3k__cls\" data-zdeskdocselectedclass=\"\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 183.219px;height: auto;cursor: pointer\"><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span><span style=\"font-size: 16px\" class=\"size\"><b>&nbsp; &nbsp; &nbsp;<\/b><\/span><span class=\"colour\"><span style=\"font-size: 16px\" class=\"size\"><b>&nbsp;b) Stockage<\/b><\/span><\/span><span style=\"font-size: 16px\" class=\"size\"><b><br \/><\/b><\/span><\/span><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp;&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-aa2b7e9cfa83c45ffaeea2ee67366f18.png\" data-zdeskdocid=\"img_4014629733278976\" class=\"docsimage sty__y6v5ej__cls\" data-zdeskdocselectedclass=\"\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 192.953px;height: auto;cursor: pointer\"><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><u><span class=\"colour\">3)&nbsp; Calculer la plage sugg\u00e9r\u00e9e<\/span><\/u><\/span><u><br \/><\/u><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><span><span class=\"colour\"><b>&nbsp; &nbsp; &nbsp; a) Eurocode et annexes nationales<br \/><\/b><\/span><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-ef0998db824c0c8bb31534a030f08d07.png\" data-zdeskdocid=\"img_8952405959211798\" class=\"docsimage sty__ondonh__cls\" data-zdeskdocselectedclass=\"original\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 533px;height: auto;cursor: pointer\"><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><span><span class=\"colour\"><b>&nbsp; &nbsp; &nbsp; b) Autres normes (British Standard et ACI)<br \/><\/b><\/span><\/span><\/span><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\">&nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-2bca8fe956a3ae88146b98353cdbb8d9.png\" data-zdeskdocid=\"img_32762706024415467\" class=\"docsimage sty__s427az__cls\" data-zdeskdocselectedclass=\"original\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 528px;height: auto;cursor: pointer\"><span style=\"font-size: 16px\" class=\"size\"><br \/><\/span><\/div>\n<\/div>\n<div><\/div>\n<div><span style=\"font-size: 16px\" class=\"size\"><u><span class=\"colour\">4) Facteur de raideur \u00e0 appliquer<\/span><br \/><\/u><\/span><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-68abf5efffd2a25d7a27c9237506d24e.png\" data-zdeskdocid=\"img_7180584803910051\" class=\"docsimage sty__an6nhi__cls\" data-zdeskdocselectedclass=\"original\" style=\"border: 0px none;padding: 0px;max-width: 100%;width: 327px;height: auto;cursor: pointer\"><\/div>\n<\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Introduction aux coefficients de raideur Les coefficients de raideur des poutres, dalles, poteaux et voiles peuvent \u00eatre d\u00e9finis automatiquement pour tenir compte de la fissuration&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":[33],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2107","wiki","type-wiki","status-publish","hentry","category-fe-analysis-of-floors"],"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>Types de mod\u00e8les de poteaux et de voiles : facteurs de raideur, fissuration et fluage - Prota 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