{"id":8884,"date":"2022-08-29T15:27:47","date_gmt":"2022-08-29T13:27:47","guid":{"rendered":"https:\/\/www.soletanche-bachy.com\/?p=8884"},"modified":"2022-11-25T14:28:28","modified_gmt":"2022-11-25T13:28:28","slug":"le-procede-biocalcis-renforce-les-fragilites-dun-pont-a-orleans","status":"publish","type":"post","link":"https:\/\/www.soletanche-bachy.com\/le-procede-biocalcis-renforce-les-fragilites-dun-pont-a-orleans\/","title":{"rendered":"Le proc\u00e9d\u00e9 Biocalcis\u00ae renforce les fragilit\u00e9s d\u2019un pont \u00e0 Orl\u00e9ans"},"content":{"rendered":"

ao\u00fbt 29th, 2022<\/p>\n<\/div>

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Le proc\u00e9d\u00e9 Biocalcis\u00ae renforce les fragilit\u00e9s d\u2019un pont \u00e0 Orl\u00e9ans<\/h1><\/div>
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Soletanche Bachy France vient d\u2019achever le plot d\u2019essai des injections en Biocalcis\u00ae pour la consolidation d\u2019un pont ainsi que la premi\u00e8re phase de travaux d\u00e9finitifs, une premi\u00e8re pour le Groupe.<\/strong><\/p>\n<\/div>

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\"Biocalcis,<\/span><\/div>

Biocalcis\u00ae utilis\u00e9 pour le renforcement d’un pont \u00e0 Orl\u00e9ans<\/h2><\/div>

On se souvient du chantier Pilote r\u00e9alis\u00e9 \u00e0 Nice en 2015 pour une application identique, et qui avait valu \u00e0 Biocalcis\u00ae l\u2019obtention du Grand Prix de l\u2019innovation VINCI. C\u2019est la premi\u00e8re fois depuis cette date que le proc\u00e9d\u00e9 est \u00e0 nouveau employ\u00e9 pour le confortement<\/a> d\u2019un mur en sol renforc\u00e9, au niveau de la cul\u00e9e nord du pont Ren\u00e9 Thinat et ce en traitement d\u00e9finitif.<\/p>\n

Depuis l\u2019effondrement du Pont de G\u00eanes en 2018, bon nombre de collectivit\u00e9s surveillent de pr\u00e8s leurs ouvrages d\u2019art. Dans le cadre de ce suivi, des fragilit\u00e9s ont \u00e9t\u00e9 d\u00e9cel\u00e9es sur le Pont Ren\u00e9-Thinat achev\u00e9 en 1974.<\/p>\n<\/div>

Deux zones aux probl\u00e9matiques sp\u00e9cifiques ont \u00e9t\u00e9 identifi\u00e9es. La premi\u00e8re a \u00e9t\u00e9 trait\u00e9e \u00e0 l\u2019aide du proc\u00e9d\u00e9 Biocalcis\u00ae, la seconde a \u00e9t\u00e9 renforc\u00e9e par la pose de 350 clous m\u00e9talliques.<\/p>\n

Avec un phasage pr\u00e9cis, entre les injections de bact\u00e9ries et de solutions calcifiantes, le plot d\u2019essai \u00e9tait divis\u00e9 en deux zones o\u00f9 deux diff\u00e9rents protocoles ont \u00e9t\u00e9 mis en \u0153uvre selon la position des forages.<\/p>\n

La qualit\u00e9 des injections en Biocalcis\u00ae a \u00e9t\u00e9 \u00e9valu\u00e9e par des essais de type CPT (p\u00e9n\u00e9trom\u00e8tre statique) et pressiom\u00e9triques, r\u00e9alis\u00e9s avant et apr\u00e8s travaux. Gr\u00e2ce \u00e0 ce plot d\u2019essai, les volumes de solution calcifiante \u00e0 injecter ont pu \u00eatre optimis\u00e9s.<\/p>\n<\/div>

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Premi\u00e8re phase des travaux de confortement achev\u00e9e<\/p>\n

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La premi\u00e8re phase des travaux d\u00e9finitifs en Biocalcis\u00ae (forages et injections) ont d\u00e9but\u00e9 le 30 mai et se sont achev\u00e9s le 14 juin dernier. Les contr\u00f4les ont \u00e9t\u00e9 faits le lendemain, car la r\u00e9action est compl\u00e8te moins de 24 heures plus tard. Une fois les bact\u00e9ries inject\u00e9es dans le sol, la solution calcifiante qui sert de nutriment et qui d\u00e9clenche la formation de calcite a \u00e9t\u00e9 inject\u00e9e une demi-journ\u00e9e apr\u00e8s la premi\u00e8re \u00e9tape. La mise en place des clous vient quant \u00e0 elle de s\u2019achever.<\/p>\n

\u00a0<\/p>\n

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Les \u00e9quipes ont pu respecter les contraintes \u00e9mises par Orl\u00e9ans M\u00e9tropole : une d\u00e9viation du trafic au niveau du pont Ren\u00e9-Thinat afin de permettre le passage des v\u00e9hicules dans les deux sens de circulation pendant toute la dur\u00e9e des travaux.<\/p>\n

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Zetta-Lyze is a multi-application, multi-profile\/profession, multi-source database platform, easily accessible from anywhere, that provides production information in real time. <\/p>\n","protected":false},"author":20,"featured_media":8887,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[747,758],"tags":[],"class_list":["post-8884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-projet"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/posts\/8884"}],"collection":[{"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/comments?post=8884"}],"version-history":[{"count":0,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/posts\/8884\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/media\/8887"}],"wp:attachment":[{"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/media?parent=8884"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/categories?post=8884"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.soletanche-bachy.com\/wp-json\/wp\/v2\/tags?post=8884"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}