{"id":5097,"date":"2026-01-27T08:33:10","date_gmt":"2026-01-27T08:33:10","guid":{"rendered":"https:\/\/eurohinca.com\/?p=5097"},"modified":"2026-01-27T08:39:43","modified_gmt":"2026-01-27T08:39:43","slug":"comment-calculer-la-poussee-maximale-admissible-en-fonction-du-materiau-de-la-conduite-et-du-terrain","status":"publish","type":"post","link":"https:\/\/eurohinca.com\/fr\/como-se-calculan-los-empujes-maximos-admisibles-en-funcion-del-material-de-la-tuberia-y-el-terreno\/","title":{"rendered":"Comment sont calcul\u00e9es les pouss\u00e9es maximales admissibles en fonction du mat\u00e9riau de la canalisation et du terrain ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5097\" class=\"elementor elementor-5097\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d6327ef e-flex e-con-boxed e-con e-parent\" data-id=\"d6327ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0d3dfe2 elementor-widget elementor-widget-text-editor\" data-id=\"0d3dfe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"106\" data-end=\"259\">Dans un <strong data-start=\"113\" data-end=\"194\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/eperonnage-de-tuyaux-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"115\" data-end=\"192\">le fon\u00e7age de tuyaux (microtunnelage)<\/a><\/strong>, La \u201cpouss\u00e9e maximale admissible\u201d est obtenue en comparant deux \u00e9l\u00e9ments :<\/p><ol data-start=\"260\" data-end=\"472\"><li data-start=\"260\" data-end=\"339\"><p data-start=\"263\" data-end=\"339\">sur <strong data-start=\"266\" data-end=\"294\">la pouss\u00e9e de travail n\u00e9cessaire<\/strong> (ce que le terrain et la disposition \u201cdemandent\u201d), et<\/p><\/li><li data-start=\"340\" data-end=\"472\"><p data-start=\"343\" data-end=\"472\">sur <strong data-start=\"346\" data-end=\"363\">Limiter la pouss\u00e9e<\/strong> qui peuvent r\u00e9sister en toute s\u00e9curit\u00e9 \u00e0 la <strong data-start=\"401\" data-end=\"421\">tuyau + joints<\/strong>, les <strong data-start=\"426\" data-end=\"447\">syst\u00e8me de poussoir<\/strong> et le <strong data-start=\"453\" data-end=\"471\">arbre d'attaque<\/strong>.<\/p><\/li><\/ol><h2 data-start=\"474\" data-end=\"529\">1) L'impulsion de la conception (ce dont vous avez besoin pour aller de l'avant)<\/h2><p data-start=\"530\" data-end=\"862\">En r\u00e8gle g\u00e9n\u00e9rale, la pouss\u00e9e de conception est estim\u00e9e comme suit :<br data-start=\"588\" data-end=\"591\" \/><strong data-start=\"591\" data-end=\"632\">Ed \u2248 F_front + F_friction + pertes<\/strong> (courbure, articulations, frottement local). Ceci est expliqu\u00e9 dans <strong data-start=\"694\" data-end=\"861\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/comment-dimensionner-les-arbres-dattaque-et-de-reception\/\" target=\"_new\" rel=\"noopener\" data-start=\"696\" data-end=\"859\">Dimensionnement des trous d'homme : pouss\u00e9e admissible, levage et logistique<\/a><\/strong>.<\/p><ul data-start=\"864\" data-end=\"1416\"><li data-start=\"864\" data-end=\"1022\"><p data-start=\"866\" data-end=\"1022\"><strong data-start=\"866\" data-end=\"879\">F_front :<\/strong> r\u00e9sistance\/\u201cpression d'excavation\u201d au front \u00d7 zone excav\u00e9e (et, le cas \u00e9ch\u00e9ant, composante hydraulique due \u00e0 la nappe phr\u00e9atique et \u00e0 la pression de l'eau).<\/p><\/li><li data-start=\"1023\" data-end=\"1309\"><p data-start=\"1025\" data-end=\"1309\"><strong data-start=\"1025\" data-end=\"1040\">F_friction :<\/strong> le frottement entre le tuyau et le sol le long de la section entra\u00een\u00e9e. Une m\u00e9thode pratique consiste \u00e0<br data-start=\"1115\" data-end=\"1118\" \/><strong data-start=\"1120\" data-end=\"1156\">F_friction \u2248 \u03c4 \u00d7 (\u03c0 \u00d7 D_ext \u00d7 L)<\/strong><br data-start=\"1156\" data-end=\"1159\" \/>o\u00f9 <strong data-start=\"1167\" data-end=\"1172\">\u03c4<\/strong> est l'unit\u00e9 de frottement p\u00e9rim\u00e9trique (tr\u00e8s sensible au terrain et \u00e0 la lubrification), <strong data-start=\"1248\" data-end=\"1257\">D_ext<\/strong> le diam\u00e8tre ext\u00e9rieur et <strong data-start=\"1281\" data-end=\"1286\">L<\/strong> la longueur entra\u00een\u00e9e.<\/p><\/li><li data-start=\"1310\" data-end=\"1416\"><p data-start=\"1312\" data-end=\"1416\"><strong data-start=\"1312\" data-end=\"1325\">Pertes :<\/strong> augmentent avec <strong data-start=\"1339\" data-end=\"1352\">courbure<\/strong>, Le syst\u00e8me de contr\u00f4le de la qualit\u00e9 est compos\u00e9 d'une s\u00e9rie d'\u00e9l\u00e9ments, tels que les contr\u00f4les, les d\u00e9viations, les joints, les d\u00e9marrages\/arr\u00eats et les frottements locaux.<\/p><\/li><\/ul><p data-start=\"1418\" data-end=\"1970\"><strong data-start=\"1418\" data-end=\"1437\">Cl\u00e9 pratique :<\/strong> le frottement est souvent le terme dominant, et il est r\u00e9duit \u00e0 l'aide de <strong data-start=\"1498\" data-end=\"1535\">lubrification (bentonite\/polym\u00e8res)<\/strong>, voir <strong data-start=\"1541\" data-end=\"1695\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/quels-sont-les-outils-et-les-machines-essentiels-pour-le-battage-des-tuyaux\/\" target=\"_new\" rel=\"noopener\" data-start=\"1543\" data-end=\"1693\">Quels sont les outils et les machines essentiels pour le battage des tuyaux ?<\/a><\/strong>, et avec une strat\u00e9gie de contr\u00f4le de la g\u00e9om\u00e9trie et du fonctionnement (sinon, le risque de blocage augmente), voir <strong data-start=\"1794\" data-end=\"1969\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/les-risques-geotechniques-les-plus-frequents-dans-le-microtunnelier-et-la-maniere-de-les-attenuer-sur-le-site\/\" target=\"_new\" rel=\"noopener\" data-start=\"1796\" data-end=\"1967\">Risques g\u00e9otechniques li\u00e9s \u00e0 la construction de microtunnels et leur att\u00e9nuation<\/a><\/strong>.<\/p><h2 data-start=\"1972\" data-end=\"2028\">2) Pouss\u00e9e maximale autoris\u00e9e (ce que vous ne devez PAS d\u00e9passer)<\/h2><p data-start=\"2029\" data-end=\"2100\">La pouss\u00e9e maximale admissible est consid\u00e9r\u00e9e comme la <strong data-start=\"2072\" data-end=\"2082\">minimum<\/strong> de ces limites :<\/p><ul data-start=\"2102\" data-end=\"3636\"><li data-start=\"2102\" data-end=\"2680\"><p data-start=\"2104\" data-end=\"2680\"><strong data-start=\"2104\" data-end=\"2169\">Limite structurelle de la conduite et, en particulier, de ses joints<\/strong> (g\u00e9n\u00e9ralement le crit\u00e8re le plus \u201csensible\u201d).<br data-start=\"2213\" data-end=\"2216\" \/>La compression axiale et l'\u00e9crasement\/les dommages aux articulations sont v\u00e9rifi\u00e9s, en utilisant une approche par type : <strong data-start=\"2305\" data-end=\"2332\">N_adm, tube \u2248 \u03c3_adm \u00d7 A<\/strong> (contrainte admissible du mat\u00e9riau \u00d7 surface de r\u00e9sistance), en appliquant des coefficients et des v\u00e9rifications des joints en fonction du syst\u00e8me de tuyauterie.<br data-start=\"2462\" data-end=\"2465\" \/>Pour rappeler les typologies, en mati\u00e8re de pilonnage, les \u00e9l\u00e9ments suivants sont fr\u00e9quemment utilis\u00e9s <strong data-start=\"2532\" data-end=\"2605\">b\u00e9ton arm\u00e9, acier, polyb\u00e9ton\/r\u00e9sine polyester et c\u00e9ramique\/gres<\/strong>, voir <strong data-start=\"2611\" data-end=\"2679\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/eperonnage-de-tuyaux-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"2613\" data-end=\"2677\">Pose d'un tuyau<\/a><\/strong>.<\/p><\/li><li data-start=\"2682\" data-end=\"3157\"><p data-start=\"2684\" data-end=\"3157\"><strong data-start=\"2684\" data-end=\"2776\">Capacit\u00e9 du syst\u00e8me de pouss\u00e9e (cylindres, ch\u00e2ssis) et des \u00e9ventuelles stations interm\u00e9diaires.<\/strong><br data-start=\"2776\" data-end=\"2779\" \/>Sur de longues distances, la <strong data-start=\"2803\" data-end=\"2829\">stations interm\u00e9diaires<\/strong> permettent de r\u00e9partir les contraintes et de maintenir la pouss\u00e9e en dessous de la limite tuyau\/joint, comme indiqu\u00e9 dans le document <strong data-start=\"2941\" data-end=\"3009\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/eperonnage-de-tuyaux-2\/\" target=\"_new\" rel=\"noopener\" data-start=\"2943\" data-end=\"3007\">Pose d'un tuyau<\/a><\/strong> et en <strong data-start=\"3015\" data-end=\"3156\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/les-risques-geotechniques-les-plus-frequents-dans-le-microtunnelier-et-la-maniere-de-les-attenuer-sur-le-site\/\" target=\"_new\" rel=\"noopener\" data-start=\"3017\" data-end=\"3154\">Risques g\u00e9otechniques...<\/a><\/strong>.<\/p><\/li><li data-start=\"3159\" data-end=\"3636\"><p data-start=\"3161\" data-end=\"3636\"><strong data-start=\"3161\" data-end=\"3252\">Capacit\u00e9 du puits d'attaque et de son mur de r\u00e9action (structure qui \u201cferme\u201d la pouss\u00e9e).<\/strong><br data-start=\"3252\" data-end=\"3255\" \/>Il est con\u00e7u\/valid\u00e9 en <strong data-start=\"3282\" data-end=\"3412\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/comment-dimensionner-les-arbres-dattaque-et-de-reception\/\" target=\"_new\" rel=\"noopener\" data-start=\"3284\" data-end=\"3410\">Comment dimensionner les arbres d'attaque et de r\u00e9ception<\/a><\/strong> et en <strong data-start=\"3418\" data-end=\"3635\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/quelles-sont-les-exigences-en-matiere-de-travaux-de-genie-civil-et-de-trous-dhomme-pour-un-projet-de-foncage-de-pipeline\/\" target=\"_new\" rel=\"noopener\" data-start=\"3420\" data-end=\"3633\">Quelles sont les exigences en mati\u00e8re de travaux de g\u00e9nie civil et de trous d'homme pour un projet de battage de pieux ?<\/a><\/strong>.<\/p><\/li><\/ul><h2 data-start=\"3638\" data-end=\"3691\">3) Comment le terrain \u201centre\u201d dans la pouss\u00e9e autoris\u00e9e<\/h2><p data-start=\"3692\" data-end=\"3819\">Le sol ne modifie pas la r\u00e9sistance du mat\u00e9riau de la canalisation, mais <strong data-start=\"3761\" data-end=\"3794\">il modifie la pouss\u00e9e n\u00e9cessaire<\/strong> (Ed) principalement par :<\/p><ul data-start=\"3820\" data-end=\"4175\"><li data-start=\"3820\" data-end=\"3963\"><p data-start=\"3822\" data-end=\"3963\"><strong data-start=\"3822\" data-end=\"3836\">Frottement \u03c4<\/strong> (augmente sur les terrains abrasifs, h\u00e9t\u00e9rog\u00e8nes, mal lubrifi\u00e9s ou g\u00e9om\u00e9triquement exigeants ; diminue avec une bonne lubrification).<\/p><\/li><li data-start=\"3964\" data-end=\"4065\"><p data-start=\"3966\" data-end=\"4065\"><strong data-start=\"3966\" data-end=\"4002\">Nappes phr\u00e9atiques et pression de l'eau<\/strong> (F_front augmente et complique la stabilit\u00e9 s'il n'est pas contr\u00f4l\u00e9).<\/p><\/li><li data-start=\"4066\" data-end=\"4175\"><p data-start=\"4068\" data-end=\"4175\"><strong data-start=\"4068\" data-end=\"4096\">Courbure et d\u00e9viations<\/strong> (ils g\u00e9n\u00e8rent des charges lat\u00e9rales suppl\u00e9mentaires et peuvent p\u00e9naliser les joints et les frottements).<\/p><\/li><\/ul><h2 data-start=\"4177\" data-end=\"4223\">4) R\u00e9sultat : comment la faisabilit\u00e9 est d\u00e9cid\u00e9e<\/h2><p data-start=\"4224\" data-end=\"4613\">La condition de s\u00e9curit\u00e9 est la suivante : <strong data-start=\"4254\" data-end=\"4268\">Ed \u2264 E_adm<\/strong>, \u00eatre <strong data-start=\"4277\" data-end=\"4286\">E_adm<\/strong> le minimum des limites (tuyau\/joint, \u00e9quipement, puits).<br data-start=\"4339\" data-end=\"4342\" \/>Si ce n'est pas le cas, les leviers typiques sont : r\u00e9duire la longueur entre les puits, am\u00e9liorer la lubrification, ajuster la g\u00e9om\u00e9trie\/les tol\u00e9rances, repenser la m\u00e9thode\/l'\u00e9quipement (voir <strong data-start=\"4497\" data-end=\"4575\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/choix-du-tunnelier\/\" target=\"_new\" rel=\"noopener\" data-start=\"4499\" data-end=\"4573\">Choix du tunnelier<\/a><\/strong>) ou incorporer des stations interm\u00e9diaires.<\/p><p data-start=\"4615\" data-end=\"4831\">Si vous souhaitez que nous la laissions \u201cferm\u00e9e\u201d pour une feuille ou un appel d'offres (valeurs, hypoth\u00e8ses et marge), la mani\u00e8re la plus directe est de le faire \u00e0 partir de <strong data-start=\"4734\" data-end=\"4830\"><a class=\"decorated-link\" href=\"https:\/\/eurohinca.com\/fr\/assistance-technique-et-ingenierie\/\" target=\"_new\" rel=\"noopener\" data-start=\"4736\" data-end=\"4828\">Assistance technique et ing\u00e9nierie<\/a><\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>En una hinca de tuber\u00eda (microt\u00fanel), el \u201cempuje m\u00e1ximo admisible\u201d se obtiene comparando dos cosas: el empuje necesario de obra (lo que \u201cpide\u201d el terreno y el trazado), y el empuje l\u00edmite que pueden soportar con seguridad la tuber\u00eda + juntas, el sistema de empuje y el pozo de ataque. 1) Empuje de dise\u00f1o (lo [&hellip;]<\/p>\n","protected":false},"author":80,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[146],"tags":[],"class_list":["post-5097","post","type-post","status-publish","format-standard","hentry","category-preguntas-frecuentes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C\u00e1lculo de empujes en hinca de tuber\u00eda | Eurohinca<\/title>\n<meta name=\"description\" content=\"C\u00f3mo estimar el empuje m\u00e1ximo admisible seg\u00fan material de tuber\u00eda y terreno: fricci\u00f3n, presi\u00f3n de frente, p\u00e9rdidas, pozos y empujes intermedios.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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