{"id":98607,"date":"2018-03-12T08:04:14","date_gmt":"2018-03-12T07:04:14","guid":{"rendered":"http:\/\/batijournal.com\/?p=98607"},"modified":"2018-03-12T08:05:37","modified_gmt":"2018-03-12T07:05:37","slug":"mesures-de-construction-reduire-leffet-tsunamis","status":"publish","type":"post","link":"https:\/\/batijournal.com\/index.php\/mesures-de-construction-reduire-leffet-tsunamis\/98607\/","title":{"rendered":"Des mesures de construction pour r\u00e9duire l&rsquo;effet des tsunamis"},"content":{"rendered":"<p>La th\u00e8se de Davide W\u00fcthrich de l\u2019EPFL sur la pr\u00e9vention des catastrophes li\u00e9es \u00e0 l\u2019impact violent d\u2019une vague sur un b\u00e2timent montre que cet impact peut \u00eatre significativement r\u00e9duit en cr\u00e9ant de larges ouvertures dans les premiers \u00e9tages des maisons. Le chercheur estime que les ing\u00e9nieurs en structure pourraient mieux int\u00e9grer ces donn\u00e9es dans la conception des b\u00e2timents expos\u00e9s \u00e0 ces dangers, un peu \u00e0 l\u2019image des normes sismiques: \u00ab Celles-ci tiennent d\u00e9j\u00e0 compte de l\u2019impact de forces horizontales sur un b\u00e2timent, mais sur le temps court des s\u00e9ismes, alors qu\u2019un tsunami op\u00e9rera une charge horizontale sur un temps plus long \u00bb, pr\u00e9cise l\u2019ing\u00e9nieur. Les recommandations formul\u00e9es par cette \u00e9tude s\u2019appliquent \u00e0 plusieurs sc\u00e9narios catastrophes: les ruptures de barrages, les tsunamis, les ondes de temp\u00eates, les \u00ab vagues d\u2019impulsion \u00bb, provoqu\u00e9es, par exemple, par un glissement de terrain dans un lac, et le ph\u00e9nom\u00e8ne dit du \u00ab mascaret \u00bb, li\u00e9 \u00e0 la mont\u00e9e de la mar\u00e9e \u00e0 l\u2019entr\u00e9e d\u2019une rivi\u00e8re. Des accidents que le chercheur a \u00e9tudi\u00e9 dans la r\u00e9gion de Bordeaux, mais qui surviennent aussi en Chine et en Angleterre. \u00ab Physiquement, les ph\u00e9nom\u00e8nes en jeu sont similaires. Et nous parlons \u00e0 chaque fois de hauteurs de vagues identiques, allant de 10 \u00e0 30 m\u00e8tres. Nos r\u00e9sultats peuvent donc s\u2019appliquer \u00e0 des cas a priori diff\u00e9rents \u00bb, pr\u00e9cise le chercheur. Proposer des mesures architecturales face \u00e0 de telles catastrophes est une nouveaut\u00e9. Les travaux ont d\u00e9j\u00e0 suscit\u00e9 l\u2019attention d\u2019une agence de recherche japonaise, int\u00e9ress\u00e9e \u00e0 essayer d\u2019en mod\u00e9liser num\u00e9riquement les r\u00e9sultats, et connaissent un prolongement dans le cadre d\u2019un travail de master \u00e0 l\u2019EPFL.<\/p>\n<p>Source : Mediacom<br \/>\nPhoto : Exp\u00e9rience Alain Herzog &#8211; EPFL<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La th\u00e8se de Davide W\u00fcthrich de l\u2019EPFL sur la pr\u00e9vention des catastrophes li\u00e9es \u00e0 l\u2019impact violent d\u2019une vague sur un b\u00e2timent montre que cet impact peut \u00eatre significativement r\u00e9duit en cr\u00e9ant de larges ouvertures dans les premiers \u00e9tages des maisons. Le chercheur estime que les ing\u00e9nieurs en structure pourraient mieux int\u00e9grer ces donn\u00e9es dans la [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":98608,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[10530,6340],"tags":[12344,519,12342,12343],"class_list":["post-98607","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-architecture-conception","tag-submersion","tag-tempete","tag-tsunami","tag-vague"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Des mesures de construction pour r\u00e9duire l&#039;effet des tsunamis<\/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:\/\/batijournal.com\/index.php\/mesures-de-construction-reduire-leffet-tsunamis\/98607\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des mesures de construction pour r\u00e9duire l&#039;effet des tsunamis\" \/>\n<meta property=\"og:description\" content=\"La th\u00e8se de Davide W\u00fcthrich de l\u2019EPFL sur la pr\u00e9vention des catastrophes li\u00e9es \u00e0 l\u2019impact violent d\u2019une vague sur un b\u00e2timent montre que cet impact peut \u00eatre significativement r\u00e9duit en cr\u00e9ant de larges ouvertures dans les premiers \u00e9tages des maisons. 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