{"id":2149,"date":"2026-04-27T12:10:54","date_gmt":"2026-04-27T12:10:54","guid":{"rendered":"https:\/\/protasoftware.com\/fr\/wiki\/apercu-du-calcul-de-section-de-poutre\/"},"modified":"2026-04-27T12:10:54","modified_gmt":"2026-04-27T12:10:54","slug":"apercu-du-calcul-de-section-de-poutre","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/fr\/support\/manuels-techniques\/apercu-du-calcul-de-section-de-poutre\/","title":{"rendered":"Aper\u00e7u du calcul de section de poutre"},"content":{"rendered":"
\n
Le calcul des poutres sera abord\u00e9 ici. Auparavant, notez que l’Analyse du b\u00e2timent doit toujours \u00eatre r\u00e9alis\u00e9e et termin\u00e9e sans erreur (certains avertissements g\u00e9n\u00e9r\u00e9s volontairement et sans effet sur le r\u00e9sultat peuvent \u00eatre ignor\u00e9s). Le comportement du b\u00e2timent doit \u00eatre v\u00e9rifi\u00e9 et \u00e9valu\u00e9 avant de passer au calcul des poutres, comme pour le calcul des autres \u00e9l\u00e9ments. <\/span><\/span><\/div>\n

<\/span><\/div>\n
Le calcul de section des poutres est expliqu\u00e9 en d\u00e9tail dans les sections suivantes.<\/span><\/span><\/div>\n
    \n
  1. Calcul de section de poutre – Onglet Armature<\/a><\/li>\n
  2. Calcul de section de poutre – Onglet Poutre<\/a><\/li>\n
  3. Tableau r\u00e9capitulatif du calcul de section de poutre – Onglet Calcul<\/a><\/li>\n
  4. Tableau r\u00e9capitulatif du calcul de section de poutre – Onglet Groupement<\/a><\/li>\n
  5. Forces ignorables pour le calcul des poutres<\/span><\/a><\/li>\n
  6. Exemple de poutre courbe \/ rampe circulaire<\/span><\/a><\/li>\n
  7. V\u00e9rification de la fl\u00e8che \u00e0 long terme des poutres en b\u00e9ton arm\u00e9<\/a><\/li>\n<\/ol>\n<\/div>\n

    G\u00e9n\u00e9ralit\u00e9s<\/span><\/span>
    <\/h2>\n
      \n
    1. Param\u00e8tres de calcul des poutres<\/a> peuvent \u00eatre pr\u00e9r\u00e9gl\u00e9s dans l’onglet <\/span>\u201cImplantation du b\u00e2timent\u201d<\/span><\/b> > <\/span>Centre de param\u00e8tres<\/span><\/b>.<\/span><\/li>\n
    2. Les nuances de b\u00e9ton et d’acier peuvent \u00eatre pr\u00e9r\u00e9gl\u00e9es dans<\/span> Mat\u00e9riau<\/a> que l’on trouve dans l’onglet <\/span>\u201cImplantation du b\u00e2timent\u201d<\/span><\/b>.<\/span><\/li>\n<\/ol>\n

      Types de poutres<\/span><\/span>
      <\/h2>\n
      Voici les types de poutres de l’onglet Calcul<\/b> :<\/span><\/div>\n
        \n
      1. Poutres d’\u00e9tage<\/span><\/b><\/u> :<\/span><\/b> Permet d’acc\u00e9der au tableau r\u00e9capitulatif du calcul de section des poutres d’\u00e9tage. Toutes les poutres situ\u00e9es au-dessus de l’\u00e9tage 0 y sont r\u00e9pertori\u00e9es.<\/span>
        <\/u><\/li>\n<\/ol>\n
          \n
        1. Poutres nervur\u00e9es<\/span><\/b><\/u> :<\/span><\/b> Permet d’acc\u00e9der au tableau r\u00e9capitulatif du calcul de section des poutres nervur\u00e9es. Toutes les poutres nervur\u00e9es situ\u00e9es au-dessus de l’\u00e9tage 0 y sont r\u00e9pertori\u00e9es.<\/span>
          <\/u><\/li>\n<\/ol>\n
            \n
          1. Poutres de fondation<\/span><\/b><\/u> : <\/span><\/b>Permet d’acc\u00e9der au tableau r\u00e9capitulatif du calcul de section des poutres de fondation. Toutes les poutres de l’\u00e9tage 0 y sont r\u00e9pertori\u00e9es.
            Apr\u00e8s avoir termin\u00e9 l'\u00a0\u00bbAnalyse du radier par \u00e9l\u00e9ments finis (EF)\u00a0\u00bb, <\/span>\u00ab\u00a0Transf\u00e9rer les r\u00e9sultats des poutres de fondation\u00a0\u00bb <\/span><\/b>doit \u00eatre s\u00e9lectionn\u00e9 pour garantir que les forces analys\u00e9es soient transf\u00e9r\u00e9es vers le module \u00ab\u00a0Calcul de section de poutre\u00a0\u00bb.
            Si des semelles filantes sont utilis\u00e9es dans le b\u00e2timent, les <\/span>\u00ab\u00a0Calculs de semelles filantes\u00a0\u00bb <\/span><\/b>doivent d’abord \u00eatre r\u00e9alis\u00e9s. <\/span>
            <\/u><\/li>\n<\/ol>\n

            Comment les forces de calcul des poutres sont g\u00e9n\u00e9r\u00e9es<\/span><\/span>
            <\/span><\/h2>\n
            Le module <\/span>\u00ab\u00a0Calcul et ferraillage de section des poutres d’\u00e9tage\u00a0\u00bb<\/span><\/b> n\u00e9cessite six<\/span> \u00ab\u00a0Moments de calcul\u00a0\u00bb<\/span><\/b> et deux<\/span> \u00ab\u00a0Efforts tranchants de calcul\u00a0\u00bb<\/span><\/b> par poutre, afin de calculer l’armature.<\/span>
            <\/span><\/div>\n
            Ces moments fl\u00e9chissants g\u00e9n\u00e8rent les valeurs de traction les plus critiques aux endroits suivants :<\/span>
            <\/span><\/div>\n
              \n
            1. Partie sup\u00e9rieure de l’appui gauche<\/span>
              <\/span><\/li>\n
            2. Partie sup\u00e9rieure de l’appui droit<\/span>
              <\/span><\/li>\n
            3. Partie sup\u00e9rieure de la trav\u00e9e<\/span>
              <\/span><\/li>\n
            4. Partie inf\u00e9rieure de l’appui gauche<\/span>
              <\/span><\/li>\n
            5. Partie inf\u00e9rieure de l’appui droit<\/span>
              <\/span><\/li>\n
            6. Partie inf\u00e9rieure de la trav\u00e9e.<\/span><\/li>\n<\/ol>\n
              \n
              Le moment fl\u00e9chissant est v\u00e9rifi\u00e9 en fibre sup\u00e9rieure dans trois zones :<\/span><\/u><\/b>
              <\/span><\/div>\n
                \n
              1. Gauche (forces les plus d\u00e9favorables dans la zone d’about \u2010 25 % de la port\u00e9e libre)
                <\/span><\/li>\n
              2. Milieu (forces les plus d\u00e9favorables dans la zone centrale \u2010 50 % de la port\u00e9e libre)
                <\/span><\/li>\n
              3. Droite (forces les plus d\u00e9favorables dans la zone d’about \u2010 25 % de la port\u00e9e libre)<\/span><\/li>\n<\/ol>\n
                                       <\/div>\n
                <\/div>\n
                De m\u00eame, le moment fl\u00e9chissant est v\u00e9rifi\u00e9 en fibre inf\u00e9rieure dans trois zones :<\/span><\/u><\/b>
                <\/span><\/div>\n

                <\/span><\/div>\n
                      4. Gauche (forces les plus d\u00e9favorables dans la zone d’about \u2010 15 % de la port\u00e9e libre)<\/span>
                <\/span><\/div>\n
                      5. Milieu (forces les plus d\u00e9favorables dans la zone centrale \u2010 70 % de la port\u00e9e libre)<\/span>
                <\/span><\/div>\n
                      6. Droite (forces les plus d\u00e9favorables dans la zone d’about \u2010 15 % de la port\u00e9e libre))<\/span><\/div>\n
                <\/div>\n<\/div>\n
                <\/div>\n","protected":false},"excerpt":{"rendered":"

                Le calcul des poutres sera abord\u00e9 ici. Auparavant, notez que l’Analyse du b\u00e2timent doit toujours \u00eatre r\u00e9alis\u00e9e et termin\u00e9e sans erreur (certains avertissements g\u00e9n\u00e9r\u00e9s volontairement…<\/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":[9],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-2149","wiki","type-wiki","status-publish","hentry","category-beam-section-design"],"yoast_head":"\nAper\u00e7u du calcul de section de poutre<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez le calcul de section de poutre : hypoth\u00e8ses, v\u00e9rifications r\u00e9glementaires et \u00e9tapes cl\u00e9s pour dimensionner une poutre en b\u00e9ton arm\u00e9 ou en acier.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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