{"id":590,"date":"2022-01-05T17:44:16","date_gmt":"2022-01-05T17:44:16","guid":{"rendered":"https:\/\/cubipod.ohla-group.com\/conception\/rebase\/"},"modified":"2022-01-08T18:13:29","modified_gmt":"2022-01-08T18:13:29","slug":"franchissement","status":"publish","type":"page","link":"https:\/\/www.cubipod.com\/fr\/conception\/franchissement\/","title":{"rendered":"Franchissement"},"content":{"rendered":"\n<p>Le franchissement d\u2019une digue \u00e0 talus est conditionn\u00e9 par la cote de la cr\u00eate de la structure, le talus expos\u00e9 \u00e0 la houle, le type de pi\u00e8ce qui forme la carapace principale et la porosit\u00e9 de celle-ci.<\/p>\n\n\n\n<p>Gr\u00e2ce \u00e0 des essais sp\u00e9cifiques de franchissement, les coefficients de rugosit\u00e9 des carapaces des Cubipod suivants ont \u00e9t\u00e9 obtenus:<\/p>\n\n\n\n<p><strong>Y<sub>f<\/sub><\/strong>= 0.46 pour une couche&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>Y<sub>f<\/sub><\/strong>= 0.44&nbsp;pour deux couches<\/p>\n\n\n\n<p>Plus la valeur du coefficient de rugosit\u00e9 est faible, plus le franchissement est faible, ce qui signifie aussi que les murs de couronnement sont soumis \u00e0 des forces plus faibles.<\/p>\n\n\n\n<p>La conception de la cr\u00eate d\u2019une digue de Cubipod peut \u00eatre r\u00e9alis\u00e9e en utilisant l\u2019\u00e9quation suivante pour calculer le franchissement:<\/p>\n\n\n\n<div class=\"math centrarTexto\"><em>Q<\/em> =\n<div class=\"fraction\"><span class=\"fup\">1<\/span> <span class=\"bar\">\/<\/span> <span class=\"fdn\">\u221a<span solid=\"\"><em>gH<sup>3<\/sup><sub>m0<\/sub><\/em><\/span><\/span><\/div>\n= 0.2 x exp<span class=\"parentesis\">(<\/span> 0.53 x lrp &#8211; 3.27 x\n<div class=\"fraction\"><span class=\"fup\"><em>Ac<\/em><\/span> <span class=\"bar\">\/<\/span> <span class=\"fdn\">Rc<\/span><\/div>\n&#8211;\n<div class=\"fraction\"><span class=\"fup\"><em>2.16<\/em><\/span> <span class=\"bar\">\/<\/span> <span class=\"fdn\">Y<sub>f<\/sub><\/span><\/div>\nx\n<div class=\"fraction\"><span class=\"fup\">Rc<\/span> <span class=\"bar\">\/<\/span> <span class=\"fdn\">H<sub>m0<\/sub><\/span><\/div>\n<span class=\"parentesis\">)<\/span><\/div>\n\n\n\n<p>O\u00f9\u00a0<strong><em>Q<\/em>\u00a0<\/strong>est le d\u00e9bit adimensionnel de franchissement<em>,\u00a0<strong>Rc\/H<sub>m0<\/sub><\/strong>est la<\/em>\u00a0revanche adimensionnelle,\u00a0<strong><em>q<\/em><\/strong>\u00a0[m<sup>3<\/sup>\/s\/m] est le d\u00e9bit unitaire de franchissement,<strong>\u00a0<em>H<sub>m0<\/sub><\/em><\/strong>\u00a0est la hauteur significative de la houle,<strong>\u00a0<em>Irp = (2T<sub>p<\/sub>\u00a0\/3)\/(2\u03c0H<sub>m0<\/sub>\/g)<sup>0,5<\/sup><\/em><\/strong>\u00a0est le nombre d\u2019Iribarren utilisant\u00a0<strong>H<sub>m0<\/sub>\u00a0<\/strong>et la p\u00e9riode de pic (<strong><em>T<sub>p<\/sub>\u00a0= 1\/f<sub>p<\/sub><\/em><\/strong>\u00a0),\u00a0<strong><em>Rc<\/em><\/strong>\u00a0et\u00a0<strong><em>Ac<\/em>\u00a0<\/strong>sont les cotes du mur de couronnement et la carapace, et\u00a0<strong><em>\u03b3<sub>f<\/sub><\/em>\u00a0<\/strong>est le facteur de rugosit\u00e9. Cette \u00e9quation est valable pour des valeurs telles que 0,40 &lt;\u00a0<strong><em>Ac\/Rc\u00a0<\/em><\/strong>&lt; 0,65 pour des carapaces monocouche de Cubipod, 0,58 &lt;\u00a0<strong><em>Ac\/Rc\u00a0<\/em><\/strong>&lt; 0,80 pour des carapaces bicouche de Cubipod et un d\u00e9bit de franchissement 10<sup>-6<\/sup>&lt;\u00a0<em><strong>Q<\/strong>\u00a0<\/em>&lt; 10<sup>-3<\/sup>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le franchissement d\u2019une digue \u00e0 talus est conditionn\u00e9 par la cote de la cr\u00eate de la structure, le talus expos\u00e9 \u00e0 la houle, le type de pi\u00e8ce qui forme la carapace principale et la porosit\u00e9 de celle-ci. Gr\u00e2ce \u00e0 des [&hellip;]<\/p>\n","protected":false},"author":21,"featured_media":199,"parent":582,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-590","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/pages\/590","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/users\/21"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/comments?post=590"}],"version-history":[{"count":1,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/pages\/590\/revisions"}],"predecessor-version":[{"id":594,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/pages\/590\/revisions\/594"}],"up":[{"embeddable":true,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/pages\/582"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/media\/199"}],"wp:attachment":[{"href":"https:\/\/www.cubipod.com\/fr\/wp-json\/wp\/v2\/media?parent=590"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}