{"id":2227,"date":"2026-04-27T12:32:47","date_gmt":"2026-04-27T12:32:47","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/comment-modeliser-un-appui-a-rouleau\/"},"modified":"2026-04-27T12:32:47","modified_gmt":"2026-04-27T12:32:47","slug":"comment-modeliser-un-appui-a-rouleau","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/comment-modeliser-un-appui-a-rouleau\/","title":{"rendered":"Comment mod\u00e9liser un appui \u00e0 rouleau"},"content":{"rendered":"
Lors de la mod\u00e9lisation d’un treillis dans ProtaStructure, celui-ci doit \u00eatre support\u00e9 par un poteau, un voile ou une autre poutre. L’\u00e9l\u00e9ment porteur doit donc \u00eatre mod\u00e9lis\u00e9 pour que le treillis puisse reposer dessus. <\/span><\/span><\/div>\n
<\/div>\n
Pour affecter un appui sp\u00e9cial, comme un appui \u00e0 rouleau, celui-ci doit toujours \u00eatre appliqu\u00e9 au bas d’un poteau. Il ne peut pas \u00eatre appliqu\u00e9 directement sur l’\u00e9l\u00e9ment du treillis. 
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<\/span><\/div>\n
Un exemple simple est illustr\u00e9 ci-dessous. Un treillis y est support\u00e9 par un appui fixe par d\u00e9faut \u00e0 l’extr\u00e9mit\u00e9 gauche, et par un appui \u00e0 rouleau \u00e0 l’extr\u00e9mit\u00e9 droite. <\/span><\/div>\n
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Symbole de blocage \u00e0 l’appui<\/h2>\n
Dans ProtaStructure, il existe 2 types de blocage \u00e0 l’appui : le blocage en translation et le blocage en rotation. <\/div>\n
L’image ci-dessous montre un exemple de visualisation des blocages d’un appui fixe, o\u00f9 la rotation et la translation sont bloqu\u00e9es selon les 3 degr\u00e9s de libert\u00e9. <\/span><\/div>\n
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\"\"<\/p>\n
Carr\u00e9<\/b> = Blocages en translation<\/span><\/div>\n
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Cercle<\/b> = Blocages en rotation<\/div>\n<\/div>\n

<\/span><\/div>\n

\n
\n
\"\"\"\"<\/p>\n
Par d\u00e9faut, chaque fois qu’un poteau ou un voile est ins\u00e9r\u00e9 dans ST 01, un appui fixe lui est automatiquement affect\u00e9, comme ci-dessus<\/span>. <\/div>\n

<\/span><\/div>\n

Pour un appui \u00e0 rouleau, le seul blocage actif est donc dans la direction Z, comme illustr\u00e9 ci-dessous. <\/div>\n
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<\/div>\n<\/div>\n
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Les \u00e9tapes de cr\u00e9ation d’un treillis support\u00e9 par diff\u00e9rents appuis sont les suivantes : <\/div>\n<\/div>\n

1. Ins\u00e9rer des poteaux courts comme appuis du treillis
<\/h2>\n
Il faut d’abord ins\u00e9rer 2 poteaux courts pour supporter le treillis. <\/span><\/div>\n
\"\"<\/p>\n
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Un poteau court permet d’obtenir un appui tr\u00e8s rigide, afin de limiter le balancement ou la d\u00e9flexion hors plan en 3D. <\/div>\n<\/div>\n

<\/span><\/div>\n

Il existe 2 fa\u00e7ons d’ins\u00e9rer un poteau court dans ProtaStructure :<\/span><\/span><\/div>\n
\n
1. Modifier la hauteur du poteau en \u00e9ditant la hauteur d’\u00e9tage : Commandes et param\u00e8tres li\u00e9s \u00e0 l’\u00e9tage – Modifier l’\u00e9tage<\/a><\/div>\n
2. Modifier la valeur del z du poteau : Travailler avec les poteaux – del z (Haut) & (Bas)<\/a><\/div>\n<\/blockquote>\n
\n
Lorsqu’un poteau est ins\u00e9r\u00e9 dans ST01, un appui fixe est automatiquement cr\u00e9\u00e9. Il n’est donc pas n\u00e9cessaire de modifier le type d’appui du poteau \u00e0 l’extr\u00e9mit\u00e9 gauche.<\/span><\/div>\n<\/div>\n

2.  Cr\u00e9er un appui \u00e0 rouleau et l’affecter au poteau de l’extr\u00e9mit\u00e9 droite
<\/h2>\n
\n
1. <\/span>Aller dans l’onglet <\/span>Mod\u00e9lisation<\/span><\/b><\/span><\/span><\/div>\n
2. Cliquer sur <\/span>Types d’appui<\/span><\/b>
<\/span><\/div>\n
3. Ajouter et nommer un nouveau type d’appui ‘<\/span>Rouleau<\/span><\/b>‘.
<\/span><\/div>\n
4. Choisir <\/span>Rouleau <\/span><\/b>et d\u00e9finir les blocages pour un appui \u00e0 rouleau. Le sens est laiss\u00e9 au choix de l’utilisateur.
<\/span><\/div>\n
5. Cliquer sur <\/span>OK<\/span><\/b>.
<\/span><\/div>\n
6. Double-cliquer<\/b> sur le poteau de l’extr\u00e9mit\u00e9 droite pour ouvrir la fen\u00eatre Propri\u00e9t\u00e9s du poteau<\/b>.
<\/span><\/div>\n
7. Aller dans l’onglet <\/span>G\u00e9o <\/span><\/b>et changer le type d’appui du poteau en "<\/span>Rouleau"<\/span><\/b>.
<\/span><\/div>\n
8. Cliquer sur <\/span>Mettre \u00e0 jour<\/span><\/b>.<\/span><\/div>\n<\/blockquote>\n
\n
\"\"<\/p>\n
Consultez cet article pour plus de d\u00e9tails sur la fonction Types d’appui<\/span> : Types d’appui<\/span><\/a><\/div>\n

<\/span><\/div>\n

<\/div>\n<\/div>\n
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3.  Cr\u00e9er le treillis
<\/h2>\n
Aller dans la vue 3D <\/b>et cr\u00e9er le treillis en activant l’\u00e9l\u00e9ment "Treillis" dans l’onglet Mod\u00e9lisation<\/b>, puis en cliquant sur le sommet des 2 poteaux.  <\/span><\/div>\n
\n
\"\"Pour plus de d\u00e9tails, consulter  : <\/span>Travailler avec les treillis en acier<\/a><\/span><\/div>\n
<\/div>\n<\/div>\n

4.  V\u00e9rifier le comportement structurel via <\/span>Mod\u00e8le analytique<\/h2>\n
Il convient de v\u00e9rifier la validit\u00e9 de l’analyse en examinant les efforts et la d\u00e9flexion via la vue<\/span> Mod\u00e8le analytique<\/span><\/a> .<\/div>\n
\n

\n

\"\"Pour des conseils sur la v\u00e9rification du mod\u00e8le analytique, regardez cette vid\u00e9o de formation en ligne : <\/span><\/span>15 Post-analyse, Mod\u00e8le analytique<\/span><\/a><\/span><\/div>\n
Ouvrez le mod\u00e8le analytique apr\u00e8s avoir ex\u00e9cut\u00e9 l\u2019analyse du b\u00e2timent, allez dans l\u2019onglet <\/span>R\u00e9sultats<\/span><\/b> et assurez-vous de cliquer sur <\/span>D\u00e9placement <\/span><\/b>et <\/span>Animation<\/span><\/b>.<\/span><\/span><\/div>\n<\/p>\n<\/div>\n
Ici, l\u2019utilisateur peut v\u00e9rifier le comportement de la structure. Comme illustr\u00e9 ci-dessous, le treillis situ\u00e9 \u00e0 l\u2019extr\u00e9mit\u00e9 droite se comporte bien comme un appui \u00e0 rouleau. Cela s\u2019explique par l\u2019appui \u00e0 rouleau assign\u00e9. <\/span><\/span><\/div>\n
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Lors de la mod\u00e9lisation d’un treillis dans ProtaStructure, celui-ci doit \u00eatre support\u00e9 par un poteau, un voile ou une autre poutre. L’\u00e9l\u00e9ment porteur doit donc…<\/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":[23],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2227","wiki","type-wiki","status-publish","hentry","category-frequently-asked-questions"],"yoast_head":"\nComment mod\u00e9liser un appui \u00e0 rouleau<\/title>\n<meta name=\"description\" content=\"Guide pas \u00e0 pas pour mod\u00e9liser un appui \u00e0 rouleau dans ProtaStructure, avec configuration des degr\u00e9s de libert\u00e9 et bonnes pratiques de calcul.\" \/>\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\/comment-modeliser-un-appui-a-rouleau\/\" \/>\n<meta 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