{"id":24019,"date":"2023-05-31T10:17:54","date_gmt":"2023-05-31T08:17:54","guid":{"rendered":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/travaux-damenagement-des-evacuateurs-de-crue\/"},"modified":"2024-01-26T12:06:19","modified_gmt":"2024-01-26T11:06:19","slug":"travaux-damenagement-des-evacuateurs-de-crue","status":"publish","type":"stories","link":"https:\/\/maccaferri-stage.softecspa.it\/fr\/exemples-de-r\u00e9ussites\/travaux-damenagement-des-evacuateurs-de-crue\/","title":{"rendered":"TRAVAUX D’AM\u00c9NAGEMENT DES \u00c9VACUATEURS DE CRUE"},"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 M\u00e9tropole Rouen Normandie a engag\u00e9, depuis plusieurs ann\u00e9es, une d\u00e9marche visant \u00e0 la r\u00e9gularisation administrative des ouvrages de lutte contre les inondations dont elle a la charge. Il est apparu qu\u2019un certain nombre d\u2019ouvrage ne disposait pas d\u2019\u00e9vacuateur de crue conforme aux r\u00e8gles de l\u2019art actuelles. Les travaux comprenaient : les travaux pr\u00e9paratoires, les terrassements en d\u00e9blai et en remblai, la mise en \u0153uvre d’\u00e9vacuateurs de crues (Matelas Reno \/ gabion, b\u00e9ton ferraill\u00e9, g\u00e9ogrille tridimensionnelle) et la r\u00e9alisation de fosses de dissipation. 30 \u00e9vacuateurs de crues ont \u00e9t\u00e9 r\u00e9alis\u00e9s sur les ouvrages existants de 2018 \u00e0 2020.<\/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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En appui du bureau d\u2019\u00e9tudes ANTEA et de l\u2019entreprise NGE Guintoli, Maccaferri a particip\u00e9 au dimensionnement des ouvrages, et a r\u00e9alis\u00e9 la fourniture ainsi que la pose des Matelas Reno et des gabions. Les am\u00e9nagements projet\u00e9s concernaient des d\u00e9versoirs inclin\u00e9s et en gradins. La r\u00e9alisation de d\u00e9versoirs en gradins de gabions permet dans le cas de fortes lames d\u00e9versantes de dissiper une partie de l\u2019\u00e9nergie hydraulique sur chaque gradin, ce qui minimise les sollicitations \u00e0 l\u2019aval du seuil, et permet de r\u00e9duire les dimensions de la fosse de dissipation aval. La r\u00e9alisation d\u2019un plan inclin\u00e9 permet une v\u00e9g\u00e9talisation facile, et une int\u00e9gration paysag\u00e8re tr\u00e8s rapide de l\u2019ouvrage. Les d\u00e9versoirs des bassins ont \u00e9t\u00e9 compl\u00e9t\u00e9s en pied par une fosse de dissipation d\u2019\u00e9nergie. Des bajoyers lat\u00e9raux ont \u00e9t\u00e9 r\u00e9alis\u00e9s pour prot\u00e9ger les berges, soit en matelas, soit en gabions. Les Matelas Reno ont une \u00e9paisseur de 23 ou 30 cm selon les d\u00e9versoirs. Ils sont fabriqu\u00e9s par une seule et m\u00eame nappe de grillage constituant le fond, les c\u00f4t\u00e9s et les doubles diaphragmes. Lors de fortes sollicitations hydrauliques, les contraintes qui s\u2019exercent sur les diaphragmes plac\u00e9s tous les m\u00e8tres sont importantes. Le proc\u00e9d\u00e9 doubles diaphragmes conf\u00e8re aux structures la rigidit\u00e9 lat\u00e9rale n\u00e9cessaire pour maintenir les granulats soumis \u00e0 la pente et\/ou au courant hydraulique. Le grillage constituant les Matelas et les gabions est rev\u00eatu de PVC, conform\u00e9ment \u00e0 la norme NFP-94 325-2 qui traite de la mise en \u0153uvre des ouvrages en gabions en milieu hydraulique.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>

Used Products<\/h2>
\"Gabions\"<\/div>
Gabions<\/h6>Le gabion Maccaferri est une bo\u00eete en grillage m\u00e9tallique \u00e0 double torsion de tailles variables, divis\u00e9e uniform\u00e9ment en cellules internes, interco<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"Matelas<\/div>
Matelas Reno Plus<\/h6>Les protections traditionnelles des berges des rivi\u00e8res r\u00e9alis\u00e9es \u00e0 l\u2019aide de pierres en vrac (enrochement) n\u00e9cessitent une couche \u00e9paisse de mat\u00e9r<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div>
\"MacMat<\/div>
MacMat R<\/h6>Les g\u00e9omatelas renforc\u00e9s sont des composites dont la structure 3D est encastr\u00e9e dans une armature qui peut \u00eatre soit une maille d\u2019acier \u00e0 double torsi<\/span>Voir\n \n <\/a>
star<\/span><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"

En appui du bureau d\u2019\u00e9tudes ANTEA et de l\u2019entreprise NGE Guintoli, Maccaferri a particip\u00e9 au dimensionnement des ouvrages, et a r\u00e9alis\u00e9 la fou<\/p>\n","protected":false},"featured_media":9445,"parent":0,"menu_order":0,"template":"","stories-category":[],"stories-tag":[],"class_list":["post-24019","stories","type-stories","status-publish","has-post-thumbnail","hentry"],"acf":{"products":null,"applications":null,"solutions":null,"sectors":null},"yoast_head":"\nTRAVAUX D'AM\u00c9NAGEMENT DES \u00c9VACUATEURS DE CRUE - 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-damenagement-des-evacuateurs-de-crue\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TRAVAUX D'AM\u00c9NAGEMENT DES \u00c9VACUATEURS DE CRUE - 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