{"id":110302,"date":"2025-10-29T07:56:03","date_gmt":"2025-10-29T06:56:03","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/protection-contre-les-eboulements-rocheux-de-la-rd64-ventabren-13-france\/"},"modified":"2026-02-16T15:37:54","modified_gmt":"2026-02-16T14:37:54","slug":"protection-contre-les-eboulements-rocheux-de-la-rd64-ventabren-13-france","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/protection-contre-les-eboulements-rocheux-de-la-rd64-ventabren-13-france\/","title":{"rendered":"Protection contre les \u00e9boulements rocheux de la RD64 – Ventabren, 13, France"},"content":{"rendered":"
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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Vue de l'\u00e9cran depuis l'amont – poteau avec jambe de force<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    D\u00e9tail de la structure d'interception<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Implantation de la barri\u00e8re RB 70<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Barri\u00e8re \u00e0 faible \u00e9nergie RB 70<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Vue d'une partie de la ligne d'\u00e9cran RB 70<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>

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    Challenge<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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    Dans le d\u00e9partement des Bouches-du-Rh\u00f4ne (13), au niveau de la route d\u00e9partementale RD64 sur la commune de Ventabren, un \u00e9boulement s’est produit d\u00e9but d\u00e9cembre 2022, au niveau de la progressive PR10+850. L’\u00e9v\u00e9nement a n\u00e9cessit\u00e9 une premi\u00e8re intervention visant \u00e0 purger les blocs en limite de stabilit\u00e9, afin de rouvrir \u00e0 la circulation la route d\u00e9partementale.<\/p>\n

    Par la suite, une deuxi\u00e8me tranche de travaux a \u00e9t\u00e9 r\u00e9alis\u00e9e pour le confortement actif de la falaise amont et l\u2019installation d\u2019une barri\u00e8re pare-bloc \u00e0 faible \u00e9nergie, afin d\u2019assurer la s\u00e9curit\u00e9 \u00e0 long terme de la route et de la voie ferr\u00e9e en aval de celle-ci. L’intervention visait \u00e0 prot\u00e9ger les enjeux de l\u2019al\u00e9a r\u00e9sultant des purges, constitu\u00e9 d’un risque de chute de blocs fragment\u00e9s, d’un volume de conception inf\u00e9rieur \u00e0 0,5 m3 et une \u00e9nergie de presque 50 kJ. <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Solution<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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    Pour la s\u00e9curit\u00e9 \u00e0 long terme des infrastructures en aval de la falaise, Maccaferri a pu fournir une barri\u00e8re RB 70, d’une capacit\u00e9 \u00e9nerg\u00e9tique de 70kJ et test\u00e9e selon l’EAD 340089-00-0106 (en cours de publication). L’\u00e9cran couvre un lin\u00e9aire de 80 m (8 modules de 10 m) pour une hauteur de protection 2,00 m. La structure d’interception de la barri\u00e8re \u00e0 faible \u00e9nergie RB 70 est constitu\u00e9 de panneaux de grillage double torsion \u00e0 maille 8×10 et fil de 3,4 mm, en longueur 4,00 m, garantissant une haute r\u00e9sistance au poin\u00e7onnement, Le grillage double torsion est souple et r\u00e9sistant, ind\u00e9maillable en cas de rupture de fil et facile \u00e0 manipuler. La longueur totale de forage est r\u00e9duite, gr\u00e2ce aux efforts sur les fondations limit\u00e9s et \u00e0 la pr\u00e9sence d’un seul ancrage lat\u00e9ral et de deux ancrages en pied de poteau. Cependant, les performances de la barri\u00e8re restent \u00e9lev\u00e9es, avec une hauteur r\u00e9siduelle post impact de 74,5 % et un allongement dynamique de 2,42m. L’installation est \u00e0 la fois simple et r\u00e9alisable sans h\u00e9licopt\u00e8re ni engins lourds si, comme dans le chantier en question, l’acc\u00e8s au site d’installation est ais\u00e9. Les poteaux sont des poutres HEA 120 en acier galvanis\u00e9 et leur poids, pour une hauteur de 2 m, est limit\u00e9 \u00e0 seulement 68 kg. De plus, ils sont \u00e9quip\u00e9s d’une plaque et d’une jambe de force pr\u00e9-soud\u00e9es, qui en font des montants autoportants.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

    Used Products<\/h2>
    \"Ecrans<\/div>
    Ecrans pare-blocs<\/h6>Les \u00e9crans pare-blocs Maccaferri (ou barri\u00e8res de r\u00e9tention) sont con\u00e7ues pour bloquer \/ intercepter les chutes de pierres et de bloc<\/span>Voir\n \n <\/a>
    star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

    Pour la s\u00e9curit\u00e9 \u00e0 long terme des infrastructures en aval de la falaise, Maccaferri a pu fournir une barri\u00e8re RB 70, d'une capacit\u00e9 \u00e9nerg\u00e9t<\/p>\n","protected":false},"featured_media":75662,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-110302","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113654],"applications":[103481,103481],"solutions":null,"sectors":null},"yoast_head":"\nProtection contre les \u00e9boulements rocheux de la RD64 - Ventabren, 13, France - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : Protection contre les \u00e9boulements rocheux de la RD64 - Ventabren, 13, France. 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