{"id":2194,"date":"2026-04-27T12:20:38","date_gmt":"2026-04-27T12:20:38","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/"},"modified":"2026-04-27T12:20:38","modified_gmt":"2026-04-27T12:20:38","slug":"dalles-portant-dans-un-sens-avec-elements-coque-orthotropes","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/","title":{"rendered":"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes"},"content":{"rendered":"<div>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><span class=\"colour\">Une dalle isotrope courante pr\u00e9sente normalement un comportement bidirectionnel dans une analyse par \u00e9l\u00e9ments finis. Cela suffit en g\u00e9n\u00e9ral pour les dalles en b\u00e9ton arm\u00e9 coul\u00e9es en place.<br \/>\n<\/span><\/span><span class=\"colour\"><br \/><\/span><\/p>\n<div><span lang=\"EN-US\"><span class=\"colour\">Pour les <\/span><b><span class=\"colour\">dalles pr\u00e9fabriqu\u00e9es unidirectionnelles<\/span><\/b><span class=\"colour\">, les <\/span><b><span class=\"colour\">dalles pr\u00e9contraintes par pr\u00e9-tension<\/span><\/b><span class=\"colour\"> ou les <\/span><b><span class=\"colour\">dalles alv\u00e9ol\u00e9es<\/span><\/b><span class=\"colour\">, le mod\u00e8le analytique doit reproduire fid\u00e8lement le comportement unidirectionnel.&nbsp;<\/span><\/span><span class=\"colour\"><br \/><\/span><\/div>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><span><span class=\"colour\">La mod\u00e9lisation par \u00e9l\u00e9ments finis des dalles unidirectionnelles<\/span><\/span><span class=\"colour\"> utilise l&rsquo;<\/span><b><span class=\"colour\">\u00e9l\u00e9ment coque orthotrope<\/span><\/b><span class=\"colour\">&nbsp;. Son <\/span><b><span class=\"colour\">module d&rsquo;\u00e9lasticit\u00e9, son module de cisaillement<\/span><\/b><span class=\"colour\"> et son <\/span><b><span class=\"colour\">coefficient de Poisson<\/span><\/b><span class=\"colour\"> sont nettement plus faibles dans la direction secondaire.<\/span><\/span><span class=\"colour\">&nbsp;<\/span><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><span><span class=\"colour\">ProtaStructure ajuste automatiquement les propri\u00e9t\u00e9s analytiques lorsque la dalle est<\/span><\/span><span class=\"colour\">&nbsp;d\u00e9finie comme dalle unidirectionnelle.<\/span><\/span><\/p>\n<div>\n<div><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-c2757e48f96d109b65290ceae1266e2d.png\" alt=\"Notes\"><\/p>\n<div><span class=\"colour\">Cette fonction est disponible \u00e0 partir de ProtaStructure 2025.<\/span><\/div>\n<p><\/span><\/div>\n<div><\/div>\n<\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-76336bdaedaf7f638ee18d4a81f2829b.png\" style=\"padding: 0px;max-width: 100%;width: 510.5px;height: auto\" data-zdeskdocid=\"img_6701986849898154\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div><\/div>\n<div><img decoding=\"async\" data-zdeskdocselectedclass=\"best\" class=\"docsimage\" data-zdeskdocid=\"img_011166787952861856\" style=\"padding: 0px;max-width: 100%;width: 510.5px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-57fde698baee8bd5cd44ecf30820db3d.png\"><\/div>\n<div><\/div>\n<div><img decoding=\"async\" style=\"padding: 0px;max-width: 100%;width: 510.5px;height: auto\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-3add1295cd57e519115bffdf1c3d8be3.png\" data-zdeskdocid=\"img_9782132737345033\" class=\"docsimage\" data-zdeskdocselectedclass=\"best\"><\/div>\n<div><\/div>\n<div>\n<h2 id=\"One-Way_Slab_Edge_Releases\" class=\"toc_anchors\">\n<div><a name=\"_Toc173141795\"><span lang=\"EN-US\"><\/span><\/a><\/div>\n<div><a name=\"_Toc173141795\"><span lang=\"EN-US\"><span class=\"colour\">Relaxations des bords d&rsquo;une dalle unidirectionnelle<\/span><\/span><\/a><\/div>\n<div><\/div>\n<\/h2>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 8pt;line-height: 107%\"><span lang=\"EN-GB\"><\/span><\/p>\n<div><span class=\"colour\">Outre les propri\u00e9t\u00e9s orthotropes du mat\u00e9riau,&nbsp;<\/span><b><span class=\"colour\">les relaxations d&rsquo;extr\u00e9mit\u00e9<\/span><\/b><span class=\"colour\">&nbsp;peuvent s&rsquo;appliquer aux dalles unidirectionnelles. <br \/><\/span><\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">Elles permettent de mod\u00e9liser une dalle pos\u00e9e sur ses appuis sans liaison en moment. Elles servent aussi pour les bords qui ne transmettent pas de charge et ne sont pas appuy\u00e9s selon la direction z.<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<div><\/div>\n<div><img decoding=\"async\" src=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-8335c4899198d5eb09ad411a7cd59f29.png\" style=\"padding: 0px;max-width: 100%\"><\/div>\n<div><\/div>\n<h3 class=\"toc_anchors\" id=\"Moment_Release_at_Supported_Edges\"><span><span class=\"colour\">Relaxation de moment sur les bords appuy\u00e9s<\/span><\/span><\/h3>\n<div>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 8pt;line-height: 107%\"><span lang=\"EN-GB\"><\/span><\/p>\n<div><span class=\"colour\">Les bords porteurs des dalles unidirectionnelles sont articul\u00e9s. Ils ne transmettent donc aucun moment fl\u00e9chissant aux appuis.<\/span><\/div>\n<\/p>\n<div><\/div>\n<h3 class=\"toc_anchors\" id=\"Disconnect_Unsupported_Edges\"><span><span class=\"size\" style=\"font-size: 18px;line-height: normal\">D\u00e9connexion des bords non appuy\u00e9s<\/span><\/span><br \/><\/h3>\n<p class=\"MsoNormal\" align=\"left\" style=\"margin-bottom: 8pt;line-height: 107%\"><span lang=\"EN-GB\"><\/span><\/p>\n<div><span class=\"colour\">Les bords non porteurs sont d\u00e9connect\u00e9s des dalles voisines et des appuis. Ils se d\u00e9forment alors de fa\u00e7on ind\u00e9pendante.<\/span><\/div>\n<\/p>\n<div><span class=\"colour\"><\/span><\/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\" 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-995d4dbd3cb9dc39bb31d9099a233962.png\" alt=\"Alert\"><\/p>\n<div>\n<div><span><span class=\"colour\">La relaxation de moment et la d\u00e9connexion reposent sur la duplication des n\u0153uds et sur des liaisons d&rsquo;\u00e9galit\u00e9 dans les degr\u00e9s de libert\u00e9 concern\u00e9s. Cette m\u00e9thode donne les meilleurs r\u00e9sultats pour les dalles dont les bords sont parall\u00e8les aux axes globaux X et Y.<\/span><\/span><\/div>\n<\/div>\n<div><span class=\"colour\"><br \/><\/span><\/div>\n<div><span class=\"colour\">Pour mod\u00e9liser une dalle alv\u00e9ol\u00e9e ou un autre syst\u00e8me de dalle pr\u00e9sentant ces caract\u00e9ristiques, l&rsquo;utilisateur doit saisir l&rsquo;\u00e9paisseur et les propri\u00e9t\u00e9s du mat\u00e9riau appropri\u00e9es. ProtaStructure ne calcule pas ces propri\u00e9t\u00e9s automatiquement.<\/span><\/div>\n<p><\/span><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Une dalle isotrope courante pr\u00e9sente normalement un comportement bidirectionnel dans une analyse par \u00e9l\u00e9ments finis. Cela suffit en g\u00e9n\u00e9ral pour les dalles en b\u00e9ton arm\u00e9&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":[8],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2194","wiki","type-wiki","status-publish","hentry","category-analysis-and-design-of-slabs"],"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>Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes - Prota Software<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prota Software\" \/>\n<meta property=\"og:description\" content=\"Une dalle isotrope courante pr\u00e9sente normalement un comportement bidirectionnel dans une analyse par \u00e9l\u00e9ments finis. Cela suffit en g\u00e9n\u00e9ral pour les dalles en b\u00e9ton arm\u00e9&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/\" \/>\n<meta property=\"og:site_name\" content=\"Prota Software\" \/>\n<meta property=\"og:image\" content=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Prota Software\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/\",\"url\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/\",\"name\":\"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes - Prota Software\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/protasoftware.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png\",\"datePublished\":\"2026-04-27T12:20:38+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/#primaryimage\",\"url\":\"https:\\\/\\\/protasoftware.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png\",\"contentUrl\":\"https:\\\/\\\/protasoftware.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/support\\\/manuels-techniques\\\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/#website\",\"url\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/\",\"name\":\"Prota Software\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/protasoftware.com\\\/fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes - Prota Software","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/","og_locale":"fr_FR","og_type":"article","og_title":"Prota Software","og_description":"Une dalle isotrope courante pr\u00e9sente normalement un comportement bidirectionnel dans une analyse par \u00e9l\u00e9ments finis. Cela suffit en g\u00e9n\u00e9ral pour les dalles en b\u00e9ton arm\u00e9&hellip;","og_url":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/","og_site_name":"Prota Software","og_image":[{"url":"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_title":"Prota Software","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/","url":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/","name":"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes - Prota Software","isPartOf":{"@id":"https:\/\/protasoftware.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/#primaryimage"},"image":{"@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/#primaryimage"},"thumbnailUrl":"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png","datePublished":"2026-04-27T12:20:38+00:00","breadcrumb":{"@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/#primaryimage","url":"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png","contentUrl":"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-c2757e48f96d109b65290ceae1266e2d.png"},{"@type":"BreadcrumbList","@id":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/dalles-portant-dans-un-sens-avec-elements-coque-orthotropes\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/protasoftware.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Dalles portant dans un sens avec \u00e9l\u00e9ments coque orthotropes"}]},{"@type":"WebSite","@id":"https:\/\/protasoftware.com\/fr\/#website","url":"https:\/\/protasoftware.com\/fr\/","name":"Prota Software","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/protasoftware.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/wiki\/2194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/types\/wiki"}],"author":[{"embeddable":true,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":0,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/wiki\/2194\/revisions"}],"wp:attachment":[{"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/media?parent=2194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/categories?post=2194"},{"taxonomy":"whitepaper_topic","embeddable":true,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/whitepaper_topic?post=2194"},{"taxonomy":"whitepaper_product","embeddable":true,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/whitepaper_product?post=2194"},{"taxonomy":"whitepaper_type","embeddable":true,"href":"https:\/\/protasoftware.com\/fr\/wp-json\/wp\/v2\/whitepaper_type?post=2194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}