{"id":67602,"date":"2015-01-15T09:22:45","date_gmt":"2015-01-15T08:22:45","guid":{"rendered":"http:\/\/b.bati-journal.com\/?p=67602"},"modified":"2019-07-15T12:48:10","modified_gmt":"2019-07-15T10:48:10","slug":"valoriser-et-consolider-les-sols","status":"publish","type":"post","link":"https:\/\/batijournal.com\/index.php\/valoriser-et-consolider-les-sols\/67602\/","title":{"rendered":"Valoriser et consolider les sols"},"content":{"rendered":"<div class=\"entry\">\n<p><strong>Qu\u2019il s\u2019agisse de travaux de voirie,\u00a0d\u2019embellissement de l\u2019environnement patrimonial ou de consolidation des structures suite \u00e0 un tassement des sols, les ma\u00eetres d\u2019ouvrage et les ma\u00eetres d\u2019\u0153uvre ont aujourd\u2019hui \u00e0 leur disposition des solutions techniques en constante \u00e9volution. En voici des exemples.\u00a0<\/strong><\/p>\n<p>La ville de Villefranche-de-Rouergue, bastide royale, est labellis\u00e9e Grand Site de Midi-Pyr\u00e9n\u00e9es et Ville d\u2019Art et d\u2019histoire. Elle b\u00e9n\u00e9ficie d\u2019un h\u00e9ritage historique exceptionnel, dont les origines remontent au 11e\u00a0si\u00e8cle. C\u2019est dans le respect absolu de l\u2019architecture du site que la municipalit\u00e9 a entrepris la r\u00e9novation de la place Notre\u00a0Dame, berceau du patrimoine historique de l\u2019Aveyron. L\u2019am\u00e9nagement a port\u00e9 sur la r\u00e9novation compl\u00e8te du sol, avec les pav\u00e9s d\u2019origine de la ville, qui ont \u00e9t\u00e9 pos\u00e9s selon les techniques traditionnelles. L\u2019ouvrage a \u00e9t\u00e9 con\u00e7u et mis en \u0153uvre par l\u2019architecte du patrimoine Axel Letellier. La conception de la fontainerie a \u00e9t\u00e9 confi\u00e9e au fontainier designer Franck Cazenave et la r\u00e9fection du sol a \u00e9t\u00e9 assur\u00e9e par des paveurs sp\u00e9cialis\u00e9s de l\u2019entreprise Ocak, sous-traitant de la soci\u00e9t\u00e9 Eurovia Midi-Pyr\u00e9n\u00e9es. La r\u00e9cup\u00e9ration et le drainage des eaux de la place ont \u00e9t\u00e9 confi\u00e9s \u00e0 la soci\u00e9t\u00e9 Aco qui a con\u00e7u, sp\u00e9cialement pour ce projet, des caniveaux sur-mesure, \u00e0 fentes en acier Corten. Aco est un groupe allemand d\u2019envergure internationale fond\u00e9 en 1946 par Josef Severin Ahlmann, sp\u00e9cialis\u00e9 dans la fabrication de syst\u00e8mes de drainage de surface et du pr\u00e9traitement des eaux us\u00e9es et de ruissellement. Depuis 1976, Aco Produits Polym\u00e8res SA est implant\u00e9 dans l\u2019Eure.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-62354 size-medium\" src=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/sols-2-199x300.jpg\" alt=\"r\u00e9am\u00e9nagement de la place de Villefranche-de-Rouergue\" width=\"199\" height=\"300\" \/><\/p>\n<h3>Les d\u00e9tails techniques du projet<\/h3>\n<p>Le but de ce nouvel am\u00e9nagement \u00e9tait de valoriser la dimension patrimoniale du site MH tout en apportant la technique du 21e\u00a0si\u00e8cle, au travers d\u2019une animation musicale in\u00e9dite. Aco a ainsi d\u00e9velopp\u00e9 une solution sur-mesure afin de r\u00e9pondre pr\u00e9cis\u00e9ment \u00e0 l\u2019objectif de l\u2019architecte\u00a0: les caniveaux \u00e0 fente en acier Corten, \u00e0 l\u2019aspect vieilli, se sont parfaitement int\u00e9gr\u00e9s et harmonisent \u00e9l\u00e9gamment la place. La fontaine musicale qui a \u00e9t\u00e9 cr\u00e9\u00e9e donne la possibilit\u00e9 aux jets d\u2019eau de danser au son de diverses musiques et m\u00eame du carillon, actuellement en cours de restauration. Des musiciens peuvent \u00e9galement faire danser les jets d\u2019eau en direct, gr\u00e2ce \u00e0 une technologie \u00e9volu\u00e9e qui permet de coordonner en temps r\u00e9el le son et le mouvement de l\u2019eau. Pour la diffusion d\u2019un son de qualit\u00e9, la sonorisation a \u00e9t\u00e9 totalement renouvel\u00e9e. Les caniveaux devaient assurer une double fonction\u00a0: il fallait r\u00e9cup\u00e9rer, d\u2019une part, les eaux de la fontaine et, d\u2019autre part, les eaux pluviales de la place. Le d\u00e9bit des \u00e9l\u00e9ments a \u00e9t\u00e9 calcul\u00e9 en cons\u00e9quence. Ensuite, les techniciens ont install\u00e9 des caniveaux \u00e0 fentes qualitatives s\u2019int\u00e9grant dans l\u2019environnement de la place pav\u00e9e \u00e0 l\u2019ancienne. Afin de r\u00e9pondre \u00e0 l\u2019ensemble des exigences urbanistiques, Aco propose une gamme compl\u00e8te de caniveaux \u00e0 fentes en diff\u00e9rentes mati\u00e8res\u00a0: acier Corten, laiton, inox, acier galvanis\u00e9, pouvant int\u00e9grer des LED lumineuses. L\u2019acier Corten ne se d\u00e9grade pas. Son oxydation stabilis\u00e9e, \u00e0 effet d\u00e9coratif, lui conf\u00e8re un aspect vieilli particuli\u00e8rement bien adapt\u00e9 \u00e0 l\u2019architecture du site.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-62355 size-medium\" src=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/sols-4-173x300.jpg\" alt=\"r\u00e9am\u00e9nagement de la place de Villefranche-de-Rouergue\" width=\"173\" height=\"300\" \/><\/p>\n<p>Le chantier s\u2019est d\u00e9roul\u00e9 sur plus de 3\u2009mois. 120\u00a0m\u00e8tres de caniveaux \u00e0 fentes de 18\u2009mm ont \u00e9t\u00e9 pos\u00e9s. La fontaine et la r\u00e9cup\u00e9ration des eaux de la place ont n\u00e9cessit\u00e9 l\u2019installation des \u00e9quipements suivants\u00a0: un regard technique avec jet central, un coffret \u00e0 effet d\u2019eau, une chambre de d\u00e9grillage, une chambre technique avec filtres \u00e0 sable, 2\u00a0pompes immerg\u00e9es, un caniveau de retour d\u2019eau. Les r\u00e9seaux ont \u00e9t\u00e9 enterr\u00e9s et tous les \u00e9l\u00e9ments techniques (c\u00e2bles, fils t\u00e9l\u00e9phoniques) sont totalement invisibles. La fontaine elle-m\u00eame, con\u00e7ue pour apporter un agr\u00e9ment suppl\u00e9mentaire au lieu, dispara\u00eet lorsqu\u2019elle n\u2019est pas en fonctionnement. Le sol peut ainsi r\u00e9v\u00e9ler toute sa qualit\u00e9, et la vocation initiale de rencontre de la place demeure intacte. Le co\u00fbt global de ce projet s\u2019\u00e9l\u00e8ve \u00e0 1\u2009010\u2009843\u00a0euros\u00a0HT, avec la participation de la R\u00e9gion Midi-Pyr\u00e9n\u00e9es (169\u2009362 euros), du Conseil g\u00e9n\u00e9ral de l\u2019Aveyron (106\u2009109\u00a0euros) et de l\u2019\u00c9tat\u00a0\/\u00a0DETR (70\u2009000\u00a0euros).<\/p>\n<h3><\/h3>\n<h3><\/h3>\n<h3><\/h3>\n<h3><\/h3>\n<h3><\/h3>\n<h3>Des micropieux pour la consolidation des sols<\/h3>\n<p>L\u2019une des techniques employ\u00e9es par les sp\u00e9cialistes de la restauration des structures patrimoniales pour consolider les sols, notamment en cas d\u2019affaissement des b\u00e2timents ou dans le cadre de travaux lourds impliquant des interventions en sous-sol, est celle du micropieu. Plusieurs types de mat\u00e9riels sont disponibles\u00a0: soulignons l\u2019originalit\u00e9 du micropieu h\u00e9lico\u00efdal Fondapieu, constitu\u00e9 d\u2019\u00e9l\u00e9ments h\u00e9lico\u00efdaux en fonte d\u2019aluminium pleins ou creux pour \u00eatre inject\u00e9s, longs de 1\u2009m, s\u2019assemblant au fur et \u00e0 mesure de la p\u00e9n\u00e9tration dans le sol \u00e0 l\u2019aide d\u2019un goujon en aluminium haute r\u00e9sistance anodis\u00e9. Le pieu inoxydable, du fait de sa forme sp\u00e9ciale, se visse de lui-m\u00eame sous l\u2019effet du marteau, sans vibration, en comprimant le sol environnant. La mise en place s\u2019effectue \u00e0 l\u2019aide d\u2019une MOP (machine autonome de pose), sans forage pr\u00e9alable. En outre, pour chaque lot de fabrication et m\u00eame pour chaque pieu, un \u00e9chantillon de mati\u00e8re premi\u00e8re est pr\u00e9lev\u00e9 et archiv\u00e9. Les num\u00e9ros de coul\u00e9e permettent ainsi d\u2019assurer la tra\u00e7abilit\u00e9 de chaque Fondapieu et d\u2019offrir des garanties suppl\u00e9mentaires \u00e0 long terme. La capacit\u00e9 de charge d\u00e9pend de la nature des terrains et de la longueur des mat\u00e9riels mis en place (de 3\u00a0\u00e0 6\u2009m de profondeur). Freyssinet France, installateur agr\u00e9\u00e9, r\u00e9alise le dimensionnement, la mise en place des\u00a0Fondapieu avec injection du coulis si n\u00e9cessaire, et les essais de contr\u00f4le. Le syst\u00e8me fait l\u2019objet d\u2019un Avis Technique du CSTB.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-62356 size-medium\" src=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/sauterne-uretek.png\" alt=\"\u00e9glise de Sauterne\" width=\"300\" \/><\/p>\n<h3>Les injections de r\u00e9sine expansive, une alternative aux techniques traditionnelles de reprise en sous-oeuvre.<\/h3>\n<p>Qu\u2019il s\u2019agisse de stabiliser des ouvrages, de relever des dalles ou encore de combler des cavit\u00e9s peu profondes, la technique des injections s\u2019av\u00e8re tr\u00e8s efficace. Depuis plus de 20 ans, la soci\u00e9t\u00e9 Uretek est sp\u00e9cialis\u00e9e dans la consolidation des sols par injection de r\u00e9sine expansive en profondeur. Relevant de la norme NF EN 12715, le proc\u00e9d\u00e9 Deep Injections\u00ae consiste \u00e0 injecter une r\u00e9sine \u00e0 tr\u00e8s forte expansion dans le sol sous fondation ou dallage pour remplir les vides et am\u00e9liorer la r\u00e9sistance ainsi que la coh\u00e9sion du sol. Ce type d\u2019injection \u00a0est dite \u00a0\u00ab\u00a0d\u2019impr\u00e9gnation\u00a0\u00bb et de \u00ab\u00a0fracturation hydraulique\u00a0\u00bb puisqu\u2019elle autorise la p\u00e9n\u00e9tration de la r\u00e9sine dans tout type de sol y compris les sols fins et non-perm\u00e9ables comme les argiles. L\u2019action de la r\u00e9sine engendre un compactage statique tridimensionnel entra\u00eenant une am\u00e9lioration g\u00e9n\u00e9rale de la portance.<\/p>\n<p><a href=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/Basilique-st-nicodeme.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-62400 size-medium\" title=\"Basilique Saint-Nicod\u00e8me\" src=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/Basilique-st-nicodeme-225x300.jpg\" alt=\"Basilique-st-nicodeme\" width=\"225\" height=\"300\" \/><\/a><\/p>\n<p>Apr\u00e8s un examen approfondi, l\u2019ing\u00e9nieur URETEK d\u00e9finit l\u2019emplacement et la profondeur des injections. Ensuite, la r\u00e9sine est inject\u00e9e dans le sol et se diffuse dans la mati\u00e8re en remplissant tous les vides existants. Pour finir, elle s\u2019expanse consid\u00e9rablement pour compacter le sol. Le r\u00e9sultat, spectaculaire, se voit \u00e0 l\u2019oeil nu. Ce dernier est v\u00e9rifi\u00e9 et contr\u00f4l\u00e9 tout au long de l\u2019op\u00e9ration d\u2019injection \u00e0 l\u2019aide d\u2019un suivi au niveau laser, puis confirm\u00e9 par des proc\u00e9d\u00e9s g\u00e9otechniques. Peu invasif, \u00e9conomique et rapide \u00e0 mettre en oeuvre, ce proc\u00e9d\u00e9 repr\u00e9sente une alternative avantageuse aux techniques traditionnelles de reprise en sous-oeuvre.<\/p>\n<p>De nombreux \u00e9difices patrimoniaux ont d\u00e9j\u00e0 b\u00e9n\u00e9fici\u00e9 de la solution URETEK tels que la chapelle Saint-Nicod\u00e8me de Plumeliau, le Mus\u00e9um d\u2019Histoire naturelle de Paris, le Grand Palais de Paris\u2026<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<div>\n<table>\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.kiosque21.com\/magazine-atrium-construction\/2663-atrium-construction-n62.html\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"http:\/\/test.atrium-construction.com\/wp-content\/uploads\/2015\/01\/AC62Couv-200x283.jpg\" alt=\"couverture Atrium Construction\" width=\"200\" height=\"283\" \/><\/a><\/td>\n<td>Ce dossier est paru dans le num\u00e9ro 62 d\u2019Atrium Construction. Retrouvez le magazine sur\u00a0<a href=\"http:\/\/www.kiosque21.com\/magazine-atrium-construction\/2663-atrium-construction-n62.html\" target=\"_blank\" rel=\"noopener noreferrer\">www.kiosque21.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"share-post\"><span class=\"share-text\">Partager !<\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Qu\u2019il s\u2019agisse de travaux de voirie,\u00a0d\u2019embellissement de l\u2019environnement patrimonial ou de consolidation des structures suite \u00e0 un tassement des sols, les ma\u00eetres d\u2019ouvrage et les ma\u00eetres d\u2019\u0153uvre ont aujourd\u2019hui \u00e0 leur disposition des solutions techniques en constante \u00e9volution. En voici des exemples.\u00a0 La ville de Villefranche-de-Rouergue, bastide royale, est labellis\u00e9e Grand Site de Midi-Pyr\u00e9n\u00e9es et [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":67603,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[10530],"tags":[1446],"class_list":["post-67602","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-valorisation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Valoriser et consolider les sols<\/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\/valoriser-et-consolider-les-sols\/67602\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Valoriser et consolider les sols\" \/>\n<meta property=\"og:description\" content=\"Qu\u2019il s\u2019agisse de travaux de voirie,\u00a0d\u2019embellissement de l\u2019environnement patrimonial ou de consolidation des structures suite \u00e0 un tassement des sols, les ma\u00eetres d\u2019ouvrage et les ma\u00eetres d\u2019\u0153uvre ont aujourd\u2019hui \u00e0 leur disposition des solutions techniques en constante \u00e9volution. En voici des exemples.\u00a0 La ville de Villefranche-de-Rouergue, bastide royale, est labellis\u00e9e Grand Site de Midi-Pyr\u00e9n\u00e9es et [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/batijournal.com\/index.php\/valoriser-et-consolider-les-sols\/67602\/\" \/>\n<meta property=\"og:site_name\" content=\"Batijournal\" \/>\n<meta property=\"article:published_time\" content=\"2015-01-15T08:22:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-07-15T10:48:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/batijournal.com\/wp-content\/uploads\/2015\/02\/sols-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"720\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bati-journal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bati_journal\" \/>\n<meta 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