{"id":110488,"date":"2025-10-29T07:58:37","date_gmt":"2025-10-29T06:58:37","guid":{"rendered":"https:\/\/www.maccaferri.com\/fr\/success-stories\/renforcement-par-geogrille-parachute-du-stade-de-porte-peres\/"},"modified":"2026-02-16T15:41:50","modified_gmt":"2026-02-16T14:41:50","slug":"renforcement-par-geogrille-parachute-du-stade-de-porte-peres","status":"publish","type":"stories","link":"https:\/\/www.maccaferri.com\/fr\/exemples-de-r\u00e9ussites\/renforcement-par-geogrille-parachute-du-stade-de-porte-peres\/","title":{"rendered":"RENFORCEMENT PAR G\u00c9OGRILLE PARACHUTE DU STADE DE PORTE-P\u00c8RES"},"content":{"rendered":"
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    \"\"<\/div>\n <\/div>\n <\/div>\n
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    G\u00e9ogrille pr\u00eate \u00e0 \u00eatre d\u00e9roul\u00e9e sur fond de forme nivel\u00e9 et compact\u00e9<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    Mise en oeuvre des mat\u00e9riaux sur la g\u00e9ogrille<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    ParaGrid 200\/5<\/p>\n \n <\/div>\n <\/div>\n <\/div>\n <\/div>\n

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    G\u00e9ogrille install\u00e9e transversalement au stade<\/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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    Au mois de janvier apr\u00e8s une p\u00e9riode de forte pluie, un effondrement de 1,5 m de diam\u00e8tre s’est form\u00e9 sur le stade de Porte-P\u00e8res \u00e0 Podensac. Cet effondrement n’a caus\u00e9 aucun d\u00e9g\u00e2t. Le BRGM a r\u00e9alis\u00e9 un diagnostic de la situation. Le ph\u00e9nom\u00e8ne correspondrait \u00e0 un soutirage de la couverture alluviale dans le r\u00e9seau karstique se d\u00e9veloppant au sein des calcaires constituant le substratum dans le secteur. Le BRGM a pr\u00e9conis\u00e9 un comblement et la mise en place d’une g\u00e9ogrille. Le renforcement par g\u00e9ogrille sur des sols sujets \u00e0 cavit\u00e9s est une solution efficace pour se pr\u00e9munir contre le risque d’un effondrement brutal. Si une nouvelle cavit\u00e9 venait \u00e0 remonter, la g\u00e9ogrille serait en mesure de porter la structure sus jacente ainsi que les utilisateurs.<\/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 soci\u00e9t\u00e9 Maccaferri a \u00e9t\u00e9 contact\u00e9e par la soci\u00e9t\u00e9 ARTDAN afin de proposer une solution de renforcement par g\u00e9ogrille permettant de s\u00e9curiser la zone contre une cavit\u00e9 de 1,5 m de diam\u00e8tre. Les g\u00e9ogrilles sont des g\u00e9osynth\u00e9tiques \u00e0 tr\u00e8s forte r\u00e9sistance \u00e0 la traction. Install\u00e9es \u00e0 la base des remblais, elles sont dimensionn\u00e9es pour supporter le poids du remblai et des charges roulantes en cas de remont\u00e9e d\u2019une cavit\u00e9. Les g\u00e9ogrilles peuvent ainsi \u00e9viter l\u2019effondrement total en surface. Cette solution parachute est une alternative moins co\u00fbteuse et plus en phase avec les exigences environnementales actuelles. Maccaferri a r\u00e9alis\u00e9 le dimensionnement de la g\u00e9ogrille afin de d\u00e9terminer la r\u00e9sistance \u00e0 long terme n\u00e9cessaire. La Paragrid 200 a \u00e9t\u00e9 justifi\u00e9e : cette g\u00e9ogrille ayant une r\u00e9sistance de 20 tonnes par m\u00e8tre de large est en mesure de limiter la d\u00e9flexion en surface \u00e0 15 cm si une cavit\u00e9 de 1,5 m de diam\u00e8tre venait \u00e0 remonter sous le stade. Ce calcul int\u00e8gre une surcharge variable de 10 kPa. La g\u00e9ogrille Paragrid\u00ae a la particularit\u00e9 de comporter une gaine en PEHD, un polym\u00e8re extr\u00eamement durable, qui prot\u00e8ge le polym\u00e8re de renforcement (PET). Ainsi, le renfort est prot\u00e9g\u00e9 contre l\u2019endommagement et la d\u00e9gradation chimique. Cette g\u00e9ogrille est donc particuli\u00e8rement durable et pr\u00e9sente des facteurs de r\u00e9duction parmi les plus faibles du march\u00e9. Elle est certifi\u00e9e par le BBA (British Board of agr\u00e9ment \/ UK) et le NTPEP<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

    Used Products<\/h2>
    \"G\u00e9ogrilles<\/div>
    G\u00e9ogrilles monoaxiales<\/h6>Paragrid\u00ae WLa g\u00e9ogrille haute performance ParaGrid\u00ae W est caract\u00e9ris\u00e9e par un module tr\u00e8s \u00e9lev\u00e9 et des facteurs de r\u00e9duction plus bas. Cette g\u00e9ogr<\/span>Voir\n \n <\/a>
    star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

    La soci\u00e9t\u00e9 Maccaferri a \u00e9t\u00e9 contact\u00e9e par la soci\u00e9t\u00e9 ARTDAN afin de proposer une solution de renforcement par g\u00e9ogrille permettant de s\u00e9curis<\/p>\n","protected":false},"featured_media":69538,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-110488","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":[113582],"applications":[103478,103478],"solutions":[103541],"sectors":[103460]},"yoast_head":"\nRENFORCEMENT PAR G\u00c9OGRILLE PARACHUTE DU STADE DE PORTE-P\u00c8RES - Maccaferri France<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos r\u00e9ussites : RENFORCEMENT PAR G\u00c9OGRILLE PARACHUTE DU STADE DE PORTE-P\u00c8RES. 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