{"id":11028,"date":"2016-07-26T12:15:36","date_gmt":"2016-07-26T16:15:36","guid":{"rendered":"http:\/\/aptgadget.com\/?p=11028"},"modified":"2016-09-19T17:19:26","modified_gmt":"2016-09-19T21:19:26","slug":"norway-engineers-planning-build-worlds-first-floating-underwater-tunnel","status":"publish","type":"post","link":"https:\/\/aptgadget.com\/fr\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/","title":{"rendered":"Des ing\u00e9nieurs norv\u00e9giens envisagent de construire le premier tunnel sous-marin flottant au monde"},"content":{"rendered":"<p>Des ing\u00e9nieurs norv\u00e9giens ont propos\u00e9 de cr\u00e9er une solution v\u00e9ritablement innovante pour r\u00e9soudre les difficult\u00e9s de circulation entre la ville de Kristiansand et Trondheim. Ils ont propos\u00e9 de construire le premier tunnel sous-marin au monde dans un fjord, c'est-\u00e0-dire le long d'un bras de mer \u00e9troit et profond situ\u00e9 entre de hautes falaises.<\/p>\n<p>Par la route, il faut environ 21 heures pour aller d'une ville \u00e0 l'autre. Entre ces 1100 km, vous embarquerez sept fois sur des ferries. En cr\u00e9ant le tunnel souterrain, les ing\u00e9nieurs proposent de r\u00e9duire la dur\u00e9e du trajet \u00e0 11 heures seulement. Cette r\u00e9duction serait b\u00e9n\u00e9fique \u00e0 la fois pour les touristes et pour les habitants qui sont parfois oblig\u00e9s de recourir \u00e0 des h\u00e9licopt\u00e8res pour se rendre \u00e0 l'h\u00f4pital.<\/p>\n<p>Pourquoi ne pas cr\u00e9er un pont ordinaire ? La r\u00e9ponse est simplement que le terrain norv\u00e9gien dans ces r\u00e9gions ne se pr\u00eate pas \u00e0 la construction d'un pont ordinaire. Le terrain est trop large et trop profond, ce qui rend une telle entreprise irr\u00e9alisable. Une autre solution consiste \u00e0 cr\u00e9er un pont suspendu ou un pont flottant au-dessus de l'eau. Cependant, ces constructions sont tr\u00e8s sensibles aux dommages caus\u00e9s par les intemp\u00e9ries. Ils risquent \u00e9galement d'interf\u00e9rer avec les navires de la marine, qui utilisent parfois l'eau pour s'entra\u00eener.<\/p>\n<p>L'administration norv\u00e9gienne des routes publiques planifie actuellement une \u00e9tude de faisabilit\u00e9 pour l'un des plus grands fjords de la route - le Bj\u00f8rnafjord. Le tunnel souterrain consistera en deux tubes incurv\u00e9s de 1200 m\u00e8tres de long, suspendus \u00e0 une profondeur de 20 \u00e0 30 m\u00e8tres. Les tubes seront reli\u00e9s \u00e0 des pontons flottants en surface. Malgr\u00e9 la conception peu conventionnelle du tunnel, les autorit\u00e9s ont fait remarquer que les navetteurs auraient l'impression de circuler dans un tunnel ordinaire. Le pays comptant d\u00e9j\u00e0 1 150 tunnels, les r\u00e9sidents et les visiteurs ne devraient pas \u00eatre trop d\u00e9rout\u00e9s par cet am\u00e9nagement. Arianna Minoretti, ing\u00e9nieur principal \u00e0 l'administration des routes publiques, a d\u00e9clar\u00e9 \u00e0 Wired que l'exp\u00e9rience de conduite serait la m\u00eame que dans n'importe quel autre tunnel.<\/p>\n<p>La structure a \u00e9t\u00e9 officiellement baptis\u00e9e pont tubulaire flottant submerg\u00e9, mais elle est \u00e9galement connue sous le nom de pont d'Archim\u00e8de en raison de l'utilisation du principe d'Archim\u00e8de, du nom du math\u00e9maticien grec de l'Antiquit\u00e9 qui a effectu\u00e9 le calcul de flottabilit\u00e9. Le principe de flottabilit\u00e9 stipule que tant qu'un objet p\u00e8se moins que le poids de l'eau qu'il d\u00e9place, il flottera.<\/p>\n<p>La Norv\u00e8ge a jusqu'\u00e0 pr\u00e9sent engag\u00e9 $25 milliards de dollars dans le projet, qui devrait \u00eatre achev\u00e9 d'ici 2035. Les ing\u00e9nieurs ont actuellement du pain sur la planche, notamment parce qu'un tel syst\u00e8me n'a jamais \u00e9t\u00e9 construit auparavant et que personne ne sait exactement comment les vagues, les vents et les courants d'eau dans les fjords pourraient affecter la structure.<\/p>\n<p>Featured Image Credit:inhabitat<\/p>\n<p><a href=\"http:\/\/inhabitat.com\/norway-to-build-worlds-first-floating-underwater-traffic-tunnels\/\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Norway engineers have proposed to create a truly innovation solution to travel difficulties between the city of Kristiansand and Trondheim. The engineers have offered to build the world\u2019s first underwater tunnel in a fjord- along narrow, deep inlet of the sea between high cliffs. When traveling by road, it takes about 21 hours to close &hellip;<\/p>","protected":false},"author":23,"featured_media":11029,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-11028","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Norway engineers planning to build World\u2019s first floating underwater tunnel - AptGadget.com<\/title>\n<meta name=\"description\" content=\"Norway engineers are planning to conduct feasibility studies on an underground tunnel that will reduce travel time between two cities\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aptgadget.com\/fr\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Norway engineers planning to build World\u2019s first floating underwater tunnel\" \/>\n<meta property=\"og:description\" content=\"Norway engineers are planning to conduct feasibility studies on an underground tunnel that will reduce travel time between two cities\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aptgadget.com\/fr\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\" \/>\n<meta property=\"og:site_name\" content=\"AptGadget.com\" \/>\n<meta property=\"article:published_time\" content=\"2016-07-26T16:15:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-09-19T21:19:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aptgadget.com\/wp-content\/uploads\/2016\/07\/inhabitat.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"889\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"David Waiganjo\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"David Waiganjo\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\"},\"author\":{\"name\":\"David Waiganjo\",\"@id\":\"https:\/\/aptgadget.com\/#\/schema\/person\/ec7e21a4cf6046e2fde5030eae8fed14\"},\"headline\":\"Norway engineers planning to build World\u2019s first floating underwater tunnel\",\"datePublished\":\"2016-07-26T16:15:36+00:00\",\"dateModified\":\"2016-09-19T21:19:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\"},\"wordCount\":444,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/aptgadget.com\/wp-content\/uploads\/2016\/07\/inhabitat.jpg\",\"articleSection\":[\"News\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\",\"url\":\"https:\/\/aptgadget.com\/norway-engineers-planning-build-worlds-first-floating-underwater-tunnel\/\",\"name\":\"Norway engineers planning to build World\u2019s first floating underwater tunnel - 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