{"id":2213,"date":"2026-04-27T12:27:44","date_gmt":"2026-04-27T12:27:44","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/comment-verifier-les-avertissements-de-singularite-ou-de-grande-deformation-pendant-l-analyse-du-batiment\/"},"modified":"2026-04-27T12:27:44","modified_gmt":"2026-04-27T12:27:44","slug":"comment-verifier-les-avertissements-de-singularite-ou-de-grande-deformation-pendant-l-analyse-du-batiment","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/comment-verifier-les-avertissements-de-singularite-ou-de-grande-deformation-pendant-l-analyse-du-batiment\/","title":{"rendered":"Comment v\u00e9rifier les avertissements de singularit\u00e9 ou de grande d\u00e9formation pendant l&rsquo;analyse du b\u00e2timent"},"content":{"rendered":"<div>\n <span class=\"colour\">Il est essentiel de savoir v\u00e9rifier la validit\u00e9 du mod\u00e8le. Cela vaut surtout en cas d&rsquo;erreurs ou d&rsquo;avertissements pendant l&rsquo;analyse du b\u00e2timent.&nbsp;<\/span><\/div>\n<div>\n \n<\/div>\n<div>\n <img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-91eb05794710.png\" style=\"padding: 0px;max-width: 100%\"><\/div>\n<div><\/div>\n<div>\n <span class=\"colour\">Ces avertissements figurent aussi dans le rapport \u00ab \u00c9cho du mod\u00e8le d&rsquo;analyse \u00bb. Il est accessible depuis le ruban \u00ab Dessins et rapports \u00bb, menu d\u00e9roulant \u00ab Rapport \u00bb.&nbsp;<\/span><\/div>\n<div>\n <\/div>\n<div><span class=\"colour\">L&rsquo;avertissement de singularit\u00e9 de matrice signifie que le n\u0153ud indiqu\u00e9 est instable, ou qu&rsquo;un m\u00e9canisme s&rsquo;est form\u00e9. Cela peut entra\u00eener une d\u00e9formation importante (sup\u00e9rieure \u00e0 1 m). Ces deux avertissements sont donc probablement li\u00e9s.&nbsp;<br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n Voici quelques causes d&rsquo;instabilit\u00e9 :<br \/>\n <br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">\u00c9l\u00e9ments flottants, exemple :&nbsp;<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n<\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<blockquote><p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">poutre suspendue dans le vide, sans appui appropri\u00e9<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">poteaux de transfert suspendus, sans poutre de transfert porteuse<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p><\/blockquote>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Trop d&rsquo;articulations appliqu\u00e9es aux \u00e9l\u00e9ments, exemple :&nbsp;<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Poteaux articul\u00e9s aux deux extr\u00e9mit\u00e9s, sans poutres entrantes (le poteau s&rsquo;effondre sous charge lat\u00e9rale)<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Extr\u00e9mit\u00e9 encastr\u00e9e d&rsquo;une poutre en porte-\u00e0-faux articul\u00e9e (effondrement)<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Extr\u00e9mit\u00e9 libre d&rsquo;une poutre en porte-\u00e0-faux articul\u00e9e (non n\u00e9cessaire)<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<div><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  <\/span><span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><img decoding=\"async\" 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-690200ca8e7a8314d3cff94ce7c75695.png\" alt=\"Alert\"><\/p>\n<div>\n    <span class=\"colour\">Nous d\u00e9conseillons d&rsquo;articuler un poteau en b\u00e9ton. Son encastrement est essentiel au transfert des charges lat\u00e9rales. Il l&rsquo;est aussi pour la stabilit\u00e9 globale de la structure, m\u00eame sous charge gravitaire. Le poteau est coul\u00e9 de fa\u00e7on monolithique avec les autres \u00e9l\u00e9ments en b\u00e9ton. Son comportement r\u00e9el correspond donc rarement \u00e0 une articulation v\u00e9ritable. Faites preuve d&rsquo;une extr\u00eame prudence avant d&rsquo;articuler un poteau en b\u00e9ton. Ne l&rsquo;articulez jamais aux deux extr\u00e9mit\u00e9s \u00e0 la fois.&nbsp;<\/span>\n   <\/div>\n<p><\/span>\n <\/div>\n<div>\n  <span><span class=\"colour\">La proc\u00e9dure g\u00e9n\u00e9rale de v\u00e9rification de ces instabilit\u00e9s est d\u00e9crite ci-dessous :&nbsp;&nbsp;<\/span><\/span><span class=\"colour\"><br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">En cas d&rsquo;avertissement de singularit\u00e9 ou de d\u00e9formation importante pendant l&rsquo;analyse du b\u00e2timent, imprimez-le (cliquez sur Imprimer).&nbsp; &nbsp;<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Laissez l&rsquo;analyse s&rsquo;ex\u00e9cuter jusqu&rsquo;\u00e0 la fin<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Cliquez sur l&rsquo;ic\u00f4ne&nbsp;<a href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/post-analysis-ps-2022\" target=\"_blank\" rel=\"noopener noreferrer\">Mod\u00e8le analytique<\/a>&nbsp;dans le ruban sup\u00e9rieur \u00ab Analyse \u00bb, section Post-analyse, pour v\u00e9rifier graphiquement le mod\u00e8le analytique r\u00e9el et les r\u00e9sultats.&nbsp;<\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Utilisez l&rsquo;ic\u00f4ne \u00ab&nbsp;<\/span><b><span class=\"colour\">Rechercher<\/span><\/b><span class=\"colour\">&nbsp;\u00bb pour trouver le n\u0153ud (exemple ci-dessous)&nbsp;&nbsp;<\/span><\/li>\n<\/ol>\n<blockquote>\n<div class=\"target_moving\" id=\"target_mov_img_9019321454801867\">\n  <img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-d1fb20becba0.png\" style=\"padding: 0px;max-width: 100%\"><br \/>\n  \n <\/div>\n<\/blockquote>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Utilisez la commande \u00ab&nbsp;<\/span><b><span class=\"colour\">Filtre<\/span><\/b><span class=\"colour\">&nbsp;\u00bb pour filtrer sur l&rsquo;\u00e9tage concern\u00e9 et all\u00e9ger l&rsquo;affichage<br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Activez aussi \u00ab&nbsp;<\/span><b><span class=\"colour\">\u00c9tiquette<\/span><\/b><span class=\"colour\">&nbsp;\u00bb = \u00e9tiquette d&rsquo;\u00e9l\u00e9ment dans l&rsquo;onglet \u00c9l\u00e9ments pour identifier l&rsquo;\u00e9tiquette r\u00e9elle de l&rsquo;\u00e9l\u00e9ment<\/span><\/li>\n<\/ol>\n<blockquote>\n<div>\n  <img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-87b1b0d46786.png\" style=\"padding: 0px;max-width: 100%\" class=\"docsimage\" data-zdeskdocid=\"img_713675305376809\" data-zdeskdocselectedclass=\"original\"><br \/>\n  \n <\/div>\n<\/blockquote>\n<ol>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Il est tr\u00e8s utile d&rsquo;observer la d\u00e9formation du mod\u00e8le en cliquant sur \u00ab&nbsp;<\/span><b><span class=\"colour\">D\u00e9placement<\/span><\/b><span class=\"colour\">&nbsp;\u00bb dans l&rsquo;onglet&nbsp;<\/span><b><i><span class=\"colour\">R\u00e9sultats<\/span><\/i><\/b><span class=\"colour\">&nbsp;<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n<\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<blockquote><p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">En cas de d\u00e9formation importante, l&rsquo;\u00e9chelle par d\u00e9faut peut ne pas montrer clairement la d\u00e9formation r\u00e9elle<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Cliquez sur&nbsp;<\/span><b><span class=\"colour\">Augmenter ou r\u00e9duire l&rsquo;\u00e9chelle<\/span><\/b><span class=\"colour\">&nbsp;pour am\u00e9liorer la visualisation<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n  <\/span><\/p>\n<li style=\"list-style-type: circle\"><span class=\"colour\">Vous pouvez aussi, dans<\/span><b><span class=\"colour\">&nbsp;Param\u00e8tres d&rsquo;affichage<\/span><\/b><span class=\"colour\">, d\u00e9velopper le dossier \u00ab&nbsp;<\/span><b><span class=\"colour\">D\u00e9placement<\/span><\/b><span class=\"colour\">&nbsp;\u00bb, d\u00e9cocher \u00ab&nbsp;<\/span><b><span class=\"colour\">\u00c9chelle automatique<\/span><\/b><span class=\"colour\">&nbsp;\u00bb, puis saisir manuellement la valeur dans \u00ab&nbsp;<\/span><b><span class=\"colour\">\u00c9chelle\u201d<\/span><\/b><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/ol>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p><\/blockquote>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<blockquote><p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<div><span class=\"colour\"><br \/>\n  <\/span><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-aa9370eb7269.png\" style=\"padding: 0px;max-width: 100%\"><span class=\"colour\"><br \/>\n  <\/span><span class=\"colour\"><br \/><\/span><span class=\"colour\"><br \/>\n <\/span><\/div>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p><\/blockquote>\n<p><span class=\"colour\"><br \/>\n<\/span><\/p>\n<ol><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Pour afficher la valeur d\u00e9plac\u00e9e r\u00e9elle, cliquez sur \u00ab&nbsp;<\/span><b><span class=\"colour\">R<\/span><\/b><span class=\"colour\">&nbsp;\u00bb = R\u00e9sultante, ou sur les composantes&nbsp;\u00ab&nbsp;<\/span><b><span class=\"colour\">x<\/span><\/b><span class=\"colour\">&nbsp;\u00bb, \u00ab&nbsp;<\/span><b><span class=\"colour\">y<\/span><\/b><span class=\"colour\">&nbsp;\u00bb ou \u00ab&nbsp;<\/span><b><span class=\"colour\">z<\/span><\/b><span class=\"colour\">&nbsp;\u00bb<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Cliquez sur&nbsp;<\/span><b><span class=\"colour\">Animatio<\/span><\/b><span class=\"colour\"><b>n<\/b> pour animer la d\u00e9formation et mieux visualiser le comportement de la structure.<\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Si le d\u00e9placement est trop important ou inattendu, il est inutile d&rsquo;examiner les efforts : le mod\u00e8le est instable ou mal configur\u00e9.&nbsp; <\/span><span class=\"colour\"><br \/><\/span><\/li>\n<p><span class=\"colour\"><br \/>\n <\/span><\/p>\n<li style=\"list-style-type: disc\"><span class=\"colour\">Apr\u00e8s avoir v\u00e9rifi\u00e9 le d\u00e9placement, il est utile d&rsquo;examiner les efforts en activant \u00ab&nbsp;<\/span><b><span class=\"colour\">Diagrammes<\/span><\/b><span class=\"colour\">&nbsp;\u00bb dans l&rsquo;onglet R\u00e9sultats.&nbsp;&nbsp;<\/span><br \/><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/09\/hc-4744952feeb8.png\" style=\"padding: 0px;max-width: 100%\"><\/li>\n<\/ol>\n<div>\n <span class=\"colour\">Apr\u00e8s avoir identifi\u00e9 la cause de l&rsquo;instabilit\u00e9 ou de la d\u00e9formation importante, retournez dans le mod\u00e8le pour corriger les \u00e9l\u00e9ments concern\u00e9s.<\/span>\n<\/div>\n<div>\n<div>\n<div>\n   <span class=\"KB_New_Editor_Highlights\" style=\"margin: 10px 0px;position: relative;padding: 10px 10px 10px 40px\"><img decoding=\"async\" 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-78a9a95118d628b0905aa2647e424c77.png\" alt=\"Idea\"><\/p>\n<div>\n     <span class=\"colour\">Les utilisateurs peuvent consulter la vid\u00e9o du tutoriel&nbsp;<\/span><span>pour obtenir des conseils d\u00e9taill\u00e9s sur la gestion des avertissements de singularit\u00e9 ou de d\u00e9formation importante :&nbsp;<\/span><a target=\"_blank\" href=\"https:\/\/support.protasoftware.com\/portal\/en\/kb\/articles\/how-to-detect-modeling-errors-with-sparse-solver-protastructure\" rel=\"noopener noreferrer\">How to Detect Modeling Errors with Sparse Solver? | ProtaStructure<\/a><span>&nbsp;<\/span><\/div>\n<p><\/span>\n  <\/div>\n<\/p><\/div>\n<\/div>\n<div>\n \n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Il est essentiel de savoir v\u00e9rifier la validit\u00e9 du mod\u00e8le. Cela vaut surtout en cas d&rsquo;erreurs ou d&rsquo;avertissements pendant l&rsquo;analyse du b\u00e2timent.&nbsp; Ces avertissements figurent&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-2213","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>Comment v\u00e9rifier les avertissements de singularit\u00e9 ou de grande d\u00e9formation pendant l&#039;analyse du b\u00e2timent<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment identifier et r\u00e9soudre les avertissements de singularit\u00e9 ou 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