{"id":23998,"date":"2023-05-31T10:17:50","date_gmt":"2023-05-31T08:17:50","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/renforcement-de-la-couche-de-forme-de-la-rn4\/"},"modified":"2024-01-26T12:01:33","modified_gmt":"2024-01-26T11:01:33","slug":"renforcement-de-la-couche-de-forme-de-la-rn4","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/renforcement-de-la-couche-de-forme-de-la-rn4\/","title":{"rendered":"RENFORCEMENT DE LA COUCHE DE FORME \u00a0DE LA RN4"},"content":{"rendered":"
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Probl\u00e8me<\/h3>\n <\/div>\n <\/div>\n <\/div>\n <\/div> \n <\/div>\n
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La RN4 est l’un des axes majeurs du Burkina Faso qui relie la capitale et pus grande ville du pays, Ouagadougou, aux villes de l’Est du pays comme Koupela. Au niveau de Ouagadougou, la section urbaine de cette route nationale passe par l’avenue Komber-Pandema au niveau de l’\u00e9changeur Est et traverse des zones humides qui bordent les lacs et \u00e9tangs de la ville. Dans le cadre de la r\u00e9habilitation de ce tron\u00e7on humide, la soci\u00e9t\u00e9 COGEB International a souhait\u00e9 renforcer la couche de fondation de la chauss\u00e9e pour faire face aux \u00e9ventuelles sous-pressions hydrauliques et cycles d’humidification-dessication li\u00e9s aux saisons pluvieuses et s\u00e8ches. <\/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 un premier temps, un tapis de drain granulaire a \u00e9t\u00e9 install\u00e9 au niveau de la PST (Partie Sup\u00e9rieure des Terrassements) afin de capter les flux et percolations \u00e9manant des bassins d’eaux environnants et susceptibles d’arriver sous la structure de chauss\u00e9e. Pour le renforcement de la structure de chauss\u00e9e, la g\u00e9ogrille Macgrid\u00ae EG a \u00e9t\u00e9 install\u00e9e en sandwich entre le drain tapis et la couche de fondation. Les g\u00e9ogrilles MacGrid\u00ae EG sont des g\u00e9ogrilles en polypropyl\u00e8ne fabriqu\u00e9es suivant un processus d\u2019extrusion caract\u00e9ris\u00e9 par une r\u00e9sistance sym\u00e9trique dans les deux directions. La structure extrud\u00e9e de cette g\u00e9ogrille permet : une meilleure diffusion des efforts dans les couches de forme, une r\u00e9duction des contraintes appliqu\u00e9es sur le sol de fondation, renfor\u00e7ant ainsi la structure de chauss\u00e9es. une augmentation de la portance des couches non li\u00e9es gr\u00e2ce \u00e0 sa raideur coupl\u00e9e \u00e0 sa r\u00e9sistance en traction bidirectionnelle. <\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>","protected":false},"excerpt":{"rendered":"

Dans un premier temps, un tapis de drain granulaire a \u00e9t\u00e9 install\u00e9 au niveau de la PST (Partie Sup\u00e9rieure des Terrassements) afin de capter les fl<\/p>\n","protected":false},"featured_media":9445,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-23998","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nRENFORCEMENT DE LA COUCHE DE FORME \u00a0DE LA RN4 - 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\/renforcement-de-la-couche-de-forme-de-la-rn4\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RENFORCEMENT DE LA COUCHE DE FORME \u00a0DE LA RN4 - 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