{"id":41131,"date":"2015-11-21T22:28:44","date_gmt":"2015-11-21T21:28:44","guid":{"rendered":"https:\/\/aquajet.se\/jobreport\/demontage-du-beton-des-fondations-dun-teleski-par-hydrodemolition\/"},"modified":"2015-11-21T22:28:44","modified_gmt":"2015-11-21T21:28:44","slug":"demontage-du-beton-des-fondations-dun-teleski-par-hydrodemolition","status":"publish","type":"jobreport","link":"https:\/\/aquajet.se\/fr\/jobreport\/demontage-du-beton-des-fondations-dun-teleski-par-hydrodemolition\/","title":{"rendered":"D\u00e9montage du b\u00e9ton des fondations d&#8217;un t\u00e9l\u00e9ski par hydrod\u00e9molition"},"content":{"rendered":"<h4>L&#8217;entreprise su\u00e9doise sp\u00e9cialis\u00e9e Corvara utilise un robot t\u00e9l\u00e9command\u00e9 Aqua Cutter 410A pour le retrait contr\u00f4l\u00e9 du b\u00e9ton d\u00e9grad\u00e9 des fondations des pyl\u00f4nes.<\/h4>\n<p>Un robot hydrod\u00e9molition Aquajet est utilis\u00e9 sur les fondations des pyl\u00f4nes de la station de ski su\u00e9doise d&#8217;\u00c5re pour d\u00e9couper le b\u00e9ton d\u00e9grad\u00e9 sur les blocs massifs et permettre la pose de b\u00e9ton de remplacement.<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/146510361?color=ff0000&#038;byline=0\" width=\"100%\" height=\"410\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h3>Station de ski d&#8217;\u00c5re<\/h3>\n<p>Le syst\u00e8me de remont\u00e9es m\u00e9caniques d&#8217;\u00c5re, qui permet aux skieurs et aux vacanciers de grimper sur le flanc de la montagne \u00c5reskutan, haute de 1420 m\u00e8tres, a \u00e9t\u00e9 construit par \u00e9tapes \u00e0 partir de la fin des ann\u00e9es 1970 et a contribu\u00e9 \u00e0 faire de ce petit village l&#8217;une des principales stations de sports d&#8217;hiver de Su\u00e8de.<br \/>\nLe contrat de r\u00e9novation des blocs de fondation des pyl\u00f4nes a \u00e9t\u00e9 attribu\u00e9 \u00e0 Corvara Industri &#038; Skadeservice, sp\u00e9cialiste de la r\u00e9paration des dommages caus\u00e9s aux installations industrielles et fournisseur de services de haute pression, d&#8217;aspiration, d&#8217;hydrod\u00e9molition et de sablage dans toute la r\u00e9gion nordique.<br \/>\nMattias Carlsson, chef de projet pour la remont\u00e9e m\u00e9canique d&#8217;\u00c5re, explique que l&#8217;entreprise travaille depuis longtemps avec Aquajet.<br \/>\nUn Aqua Cutter 410A, une machine t\u00e9l\u00e9command\u00e9e sp\u00e9cialement con\u00e7ue pour les applications dans les zones confin\u00e9es et inaccessibles, est utilis\u00e9 sur les blocs de fondation en b\u00e9ton.<br \/>\n&#8220;Le robot est si l\u00e9ger et compact que nous pouvons le soulever sur le flanc de la montagne par le biais du t\u00e9l\u00e9ph\u00e9rique lui-m\u00eame, puis l&#8217;abaisser sur le bloc&#8221;, explique M. Carlsson.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1764\" src=\"https:\/\/aquajet.se\/bed\/uploads\/2015\/11\/aquajet_on_location_are_cableway_4.jpg\" alt=\"Aquajet sur place - T\u00e9l\u00e9ph\u00e9rique d'\u00c5re\" width=\"1024\" height=\"684\"><\/p>\n<h3>Conduite dans les virages<\/h3>\n<p>&#8220;Chaque bloc mesure entre 3 et 4 m de haut et comporte un rebord de 700 \u00e0 750 mm de large sur lequel le robot peut se tenir.<br \/>\n&#8220;La machine est si compacte et maniable qu&#8217;elle peut \u00eatre conduite le long de la corniche et m\u00eame dans les coins, de sorte qu&#8217;elle peut atteindre toutes les surfaces de la fondation sans avoir besoin de dispositifs de levage.&#8221;<br \/>\nLa partie inf\u00e9rieure de la fondation mesure environ 4 x 4 x 1,5 m, tandis que la partie sup\u00e9rieure est d&#8217;environ 2,5 x 2,5 x 1,2 m\u00e8tres.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1765\" src=\"https:\/\/aquajet.se\/bed\/uploads\/2015\/11\/aquajet_on_location_are_cableway_5.jpg\" alt=\"Aquajet sur place - T\u00e9l\u00e9ph\u00e9rique d'\u00c5re\" width=\"1024\" height=\"684\"><\/p>\n<h3>Toute la surface est enlev\u00e9e<\/h3>\n<p>Les blocs de fondation avaient vieilli au point que Corvara a d\u00fb utiliser le jet d&#8217;eau pour d\u00e9monter 200 mm de b\u00e9ton d\u00e9compos\u00e9, afin de pouvoir appliquer du nouveau b\u00e9ton.<br \/>\nLa totalit\u00e9 de la surface des deux \u00e9tages sup\u00e9rieurs de chaque fondation doit \u00eatre enlev\u00e9e.<br \/>\nLes techniciens de Corvara ont calcul\u00e9 que la r\u00e9sistance \u00e0 la compression du b\u00e9ton \u00e9tait d&#8217;environ 44 Mpa.<br \/>\n&#8220;Des marteaux-piqueurs auraient bien s\u00fbr pu \u00eatre utilis\u00e9s pour ce travail, mais ils provoquent du bruit et de la poussi\u00e8re, ce qui n&#8217;est pas souhaitable dans cet environnement vierge&#8221;, explique M. Carlsson \u00e0 l&#8217;adresse<br \/>\n.<br \/>\n&#8220;Elle aurait \u00e9galement caus\u00e9 des dommages importants aux fondations et aux pyl\u00f4nes en raison des vibrations. Gr\u00e2ce \u00e0 la technique de l&#8217;hydrod\u00e9molition, il a \u00e9t\u00e9 possible de maintenir le t\u00e9l\u00e9ph\u00e9rique ouvert pendant la restauration compl\u00e8te.&#8221;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1762\" src=\"https:\/\/aquajet.se\/bed\/uploads\/2015\/11\/aquajet_on_location_are_cableway_2.jpg\" alt=\"Aquajet sur place - T\u00e9l\u00e9ph\u00e9rique d'\u00c5re\" width=\"1024\" height=\"684\"><\/p>\n<h3>Obligation d&#8217;utiliser l&#8217;hydrod\u00e9molition<\/h3>\n<p>&#8220;L&#8217;utilisation d&#8217;un robot d&#8217;hydrod\u00e9molition est plus rapide, l&#8217;armature des blocs reste intacte et la surface de coul\u00e9e qui en r\u00e9sulte pr\u00e9sente des propri\u00e9t\u00e9s d&#8217;adh\u00e9rence bien meilleures que celles qui r\u00e9sulteraient de l&#8217;utilisation du burinage m\u00e9canique.&#8221;<br \/>\nL&#8217;utilisation de l&#8217;hydrod\u00e9molition \u00e9tait en effet inscrite dans le contrat de Corvara, qui porte sur 12 blocs de fondation et s&#8217;\u00e9tend de 2015 \u00e0 fin 2016.<\/p>\n<p>Corvara poss\u00e8de des centres de service sur 35 sites en Su\u00e8de et emploie environ 600 personnes.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>T\u00e9l\u00e9chargez le PDF imprimable<\/strong><\/h3>\n<p><a title=\"Rapport d'activit\u00e9 PDF\" href=\"https:\/\/aquajet.se\/bed\/uploads\/2015\/11\/Jobreport-B3-JO82_decayed-concrete-on-ski-lift-foundations-removed-with-hydrodemolition.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1554\" src=\"https:\/\/aquajet.se\/bed\/uploads\/2014\/05\/pdficon.png\" alt=\"pdficon\" width=\"22\" height=\"16\">Sur place PDF  &gt;&gt;<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"featured_media":0,"template":"","case_category":[244,261],"class_list":["post-41131","jobreport","type-jobreport","status-publish","hentry","case_category-batiments-et-structures","case_category-piliers-et-tuyaux"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>D\u00e9montage du b\u00e9ton des fondations d&#039;un t\u00e9l\u00e9ski par hydrod\u00e9molition - Aquajet<\/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:\/\/aquajet.se\/fr\/jobreport\/demontage-du-beton-des-fondations-dun-teleski-par-hydrodemolition\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9montage du b\u00e9ton des fondations d&#039;un t\u00e9l\u00e9ski par hydrod\u00e9molition\" \/>\n<meta property=\"og:description\" content=\"L&#8217;entreprise su\u00e9doise sp\u00e9cialis\u00e9e Corvara utilise un robot t\u00e9l\u00e9command\u00e9 Aqua Cutter 410A pour le retrait contr\u00f4l\u00e9 du b\u00e9ton d\u00e9grad\u00e9 des fondations des pyl\u00f4nes. 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