{"id":110005,"date":"2025-10-29T07:49:17","date_gmt":"2025-10-29T06:49:17","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/la-nouvelle-route-du-littoral\/"},"modified":"2026-02-16T15:38:42","modified_gmt":"2026-02-16T14:38:42","slug":"la-nouvelle-route-du-littoral","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/la-nouvelle-route-du-littoral\/","title":{"rendered":"LA NOUVELLE ROUTE DU LITTORAL"},"content":{"rendered":"
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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    Pendant les travaux<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Pendant les travaux<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Apr\u00e8s les travaux<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Apr\u00e8s les travaux<\/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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    Situ\u00e9e entre mer et falaise, l\u2019actuelle Route du Littoral (RN1) \u00e9tait soumise \u00e0 de nombreux \u00e9boulements rocheux n\u00e9cessitant des restrictions ou fermetures fr\u00e9quentes et un entretien tr\u00e8s lourd, et causant r\u00e9guli\u00e8rement des accidents mortels, malgr\u00e9 les parades pare-blocs pr\u00e9c\u00e9demment mises en place. <\/p>\n

    La Nouvelle Route du Littoral qui vise \u00e0 remplacer l\u2019actuelle RN1, a \u00e9t\u00e9 plac\u00e9e en mer, de 80 \u00e0 300 m\u00e8tres du rivage, afin d\u2019\u00e9chapper \u00e0 ces risques de chutes de pierres. <\/p>\n

    Elle a une longueur de 12,5 km, dont 6,7 km en digues et 5,6 km en viaduc, et une largeur de 29m (2×3 voies de circulation + BU + pistes cyclables). Co\u00fbt total du projet : 1,6 milliards d\u2019euros. La route est fond\u00e9e sur un remblai digue en mer et un viaduc : le lot Viaduc men\u00e9 par le Groupement Vinci\/Bouygues, et le lot Digues par le groupement GTOI (Colas)\/SBTPC qui a sous trait\u00e9 la pose des gabions \u00e0 Inexence R\u00e9alisation OI. Quatre digues devaient \u00eatre r\u00e9alis\u00e9es pour un lin\u00e9aire total de 3 km. <\/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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    La solution d\u00e9finie par la maitrise d\u2019\u0153uvre pour les digues c\u00f4t\u00e9 terre \u00e9tait un talus raidi par g\u00e9osynth\u00e9tiques avec un parement en gabions double torsion. Les digues ont une hauteur variable entre 1 et 17 m. En plus de la fonction de sout\u00e8nement, l\u2019ouvrage devait \u00eatre en mesure de reprendre un impact li\u00e9 \u00e0 une chute de bloc d\u2019une intensit\u00e9 de 1300kJ, soit un bloc de 6,5T lanc\u00e9 \u00e0 70km\/h. <\/p>\n

    Ayant d\u00e9j\u00e0 particip\u00e9 \u00e0 un projet de recherche nomm\u00e9 REMPARE, qui avait pour vocation d\u2019\u00e9tudier l\u2019impact de blocs sur des ouvrages en gabions, et ayant une exp\u00e9rience reconnue dans ce type d\u2019ouvrage, Maccaferri a \u00e9t\u00e9 choisie pour r\u00e9aliser les plans de calepinage, les plans d\u2019implantation et fournir environ 60 000 m3 de gabions double torsion. Les gabions peuvent \u00eatre remplac\u00e9s (massif renforc\u00e9 \u00e0 l\u2019arri\u00e8re autostable) et dans les zones o\u00f9 des blocs pourraient atteindre le parement, un double gabion a \u00e9t\u00e9 mise en place (environ 60% du parement de la digue), servant de \u00ab fusible \u00bb. Les cages de dimensions 4x1x1 sont en grillage double torsion rev\u00eatu de PVC, pour une meilleure durabilit\u00e9 en milieu maritime.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

    Used Products<\/h2>
    \"Gabions\"<\/div>
    Gabions<\/h6>Un large portefeuille de solutions Maccaferri propose une gamme \u00e9tendue de solutions sur mesure pour r\u00e9pondre \u00e0 chaque besoin sp\u00e9cifique. Le<\/span>Voir\n \n <\/a>
    star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

    La solution d\u00e9finie par la maitrise d\u2019\u0153uvre pour les digues c\u00f4t\u00e9 terre \u00e9tait un talus raidi par g\u00e9osynth\u00e9tiques avec un parement en gabions d<\/p>\n","protected":false},"featured_media":55695,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-110005","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113687],"applications":[103493,103493],"solutions":[103601],"sectors":[103454]},"yoast_head":"\nLA NOUVELLE ROUTE DU LITTORAL - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : LA NOUVELLE ROUTE DU LITTORAL. 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