{"id":61747,"date":"2024-01-19T12:11:13","date_gmt":"2024-01-19T11:11:13","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/travaux-de-mise-en-securite-du-versant-amont-de-la-rm2205\/"},"modified":"2024-01-26T12:04:24","modified_gmt":"2024-01-26T11:04:24","slug":"travaux-de-mise-en-securite-du-versant-amont-de-la-rm2205","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/travaux-de-mise-en-securite-du-versant-amont-de-la-rm2205\/","title":{"rendered":"TRAVAUX DE MISE EN S\u00c9CURIT\u00c9 DU VERSANT AMONT DE LA RM2205"},"content":{"rendered":"
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Probl\u00e8me<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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A proximit\u00e9 du lieu-dit Pont de Clans, sur la commune de Clans (06), le versant orographique gauche de la route RM2205 de La Tin\u00e9e a subi une forte \u00e9rosion par les pluies torrentielles, provoquant quelques glisse-ments de terrain superficiels et d\u00e9stabilisant des blocs rocheux de moyenne dimension. Afin d’\u00e9viter une \u00e9rosion suppl\u00e9mentaire et de prot\u00e9ger la route d\u2019\u00e9ventuel chutes de blocs provenant d’une falaise plus en amont, un confortement de talus associ\u00e9 \u00e0 une solution anti\u00e9rosive ainsi qu’un \u00e9cran pare-blocs se sont av\u00e9r\u00e9s n\u00e9cessaire.<\/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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Dans le cadre du march\u00e9 \u00e0 bons de commande du d\u00e9-partement 06, Maccaferri a \u00e9t\u00e9 sollicit\u00e9 par l’entreprise Garelli pour la fourniture d’une solution de confortement de falaise au moyen d’un filet \u00e0 hautes performances m\u00e9caniques. Compte tenu de la pr\u00e9sence d’affleurements rocheux plut\u00f4t fractur\u00e9s avec des blocs de moyenne et grande dimension, il a \u00e9t\u00e9 n\u00e9cessaire de proc\u00e9der au clouage de la paroi rocheuse au-dessus de la route au PK 9+300 et au placage d’un filet \u00e0 haute r\u00e9sistance et \u00e0 faible d\u00e9formation. La solution la plus adapt\u00e9e s’est av\u00e9r\u00e9e \u00eatre le MacArmour 30×30 : un filet renforc\u00e9 compos\u00e9 d’un grillage double torsion en maille 8×10 et fil de 2,7 mm, renforc\u00e9 avec des c\u00e2bles en acier de 8 mm tous les 30 cm longitudinalement et transversalement. Les c\u00e2bles sont tiss\u00e9s directement dans les noeuds du grillage double torsion, le MacArmour 30×30 d\u00e9veloppe une r\u00e9sistance \u00e0 la traction de 170 kN\/m aussi bien dans le sens longitudinal que transversal, garantissant des d\u00e9formations extr\u00eamement limit\u00e9es gr\u00e2ce \u00e0 sa r\u00e9sistance au poin\u00e7onnement de 280 kN, tout en offrant une extr\u00eame facilit\u00e9 de pose, compte tenu de son conditionnement en rouleaux. En partie inf\u00e9rieure du talus, et plus g\u00e9n\u00e9ralement dans les zones les plus expos\u00e9es \u00e0 l’\u00e9rosion, du MacMat RM a \u00e9t\u00e9 choisi : il s’agit d’un g\u00e9ocomposite constitu\u00e9 d’un grillage double torsion en maille 6×8 et fil de 2.2 mm, pr\u00e9-accoupl\u00e9 en usine avec un matelas anti\u00e9rosif en polypropyl\u00e8ne. Cette solution permet de limiter l\u2019\u00e9rosion superficielle et de favoriser la re-v\u00e9g\u00e9talisation du talus. Ce g\u00e9ocomposite a \u00e9t\u00e9 \u00e9galement plaqu\u00e9 par une s\u00e9rie de clous de consolidation en barres autoforantes et a \u00e9t\u00e9 parfois renforc\u00e9 par des c\u00e2bles en acier de 16 mm. Le chantier est compl\u00e9t\u00e9 par une barri\u00e8re de 1500 kJ de cat\u00e9gorie A, conforme \u00e0 l’EAD 340059-00-0106. Cet \u00e9cran a \u00e9t\u00e9 install\u00e9 au-dessus des filets plaqu\u00e9s, afin d’intercepter la chute de blocs provenant de la pente amont. Tous les produits fournis de Maccaferri sur ce chantier suivent les EAD de r\u00e9f\u00e9rence et sont certifi\u00e9s CE.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>","protected":false},"excerpt":{"rendered":"

Dans le cadre du march\u00e9 \u00e0 bons de commande du d\u00e9-partement 06, Maccaferri a \u00e9t\u00e9 sollicit\u00e9 par l'entreprise Garelli pour la fourniture d'<\/p>\n","protected":false},"featured_media":61726,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-61747","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nTRAVAUX DE MISE EN S\u00c9CURIT\u00c9 DU VERSANT AMONT DE LA RM2205 - Maccaferri France<\/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:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/travaux-de-mise-en-securite-du-versant-amont-de-la-rm2205\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TRAVAUX DE MISE EN S\u00c9CURIT\u00c9 DU VERSANT AMONT DE LA RM2205 - 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