{"id":113587,"date":"2026-06-04T10:16:29","date_gmt":"2026-06-04T08:16:29","guid":{"rendered":"https:\/\/batijournal.com\/?p=113587"},"modified":"2026-06-04T14:05:28","modified_gmt":"2026-06-04T12:05:28","slug":"et-au-milieu-une-allee-de-platanes","status":"publish","type":"post","link":"https:\/\/batijournal.com\/index.php\/et-au-milieu-une-allee-de-platanes\/113587\/","title":{"rendered":"Et au milieu une all\u00e9e de platanes"},"content":{"rendered":"<p><strong>Dans un quartier lyonnais en renouvellement urbain le nouveau Centre Administratif d\u2019\u00c9tat dessine une nouvelle<\/strong><strong> urbanit<\/strong><strong>\u00e9. Autour d<\/strong><strong>\u2019<\/strong><strong>une all\u00e9e de platanes centenaires pr\u00e9serv\u00e9e, Sn<\/strong><strong>\u00f8<\/strong><strong>hetta Studio Paris et Z Architecture signent un b\u00e2timent sobre, modulable, <\/strong><strong>performant<\/strong><strong> et r\u00e9pondent au triptyque: h\u00e9ritage architectural, innovation constructive et ambition environnementale. Un article \u00e0 retrouver dans <a href=\"https:\/\/5facades.com\/5-facades-le-magazine\" target=\"_blank\" rel=\"noopener\">5Fa\u00e7ades<\/a>.\u00a0<\/strong><\/p>\n<p>A la Part-Dieu, quartier lyonnais marqu\u00e9 par sa densit\u00e9, sa verticalit\u00e9 et sa min\u00e9ralit\u00e9, la nature est quasiment absente. Sauf\u2026 sur la derni\u00e8re grande parcelle disponible o\u00f9 s\u2019\u00e9rige aujourd\u2019hui le Nouveau Centre Administratif d\u2019\u00c9tat, un \u00e9quipement de 19 132 m\u00b2 livr\u00e9 en 2024. Ici, l\u2019all\u00e9e de platanes centenaires qui traversait le site a \u00e9t\u00e9 conserv\u00e9e par les architectes \u2013 Sn\u00f8hetta Studio Paris et Z Architecture \u2013 qui l\u2019ont con\u00e7u. Plus que \u00e7a d\u2019ailleurs, cette mini coul\u00e9e verte est au c\u0153ur de leur d\u00e9marche.<em> \u00ab Le choix de conserver les arbres a \u00e9t\u00e9 central dans notre projet. Ces derniers vestiges d\u2019une ancienne caserne ont structur\u00e9 l\u2019ensemble de la conception. Transformer une contrainte en opportunit\u00e9, tel a \u00e9t\u00e9 notre parti pris \u00bb<\/em>, explique William Vassal, architecte fondateur de Z Architecture.<\/p>\n<p>Ainsi, autour de ce jardin central, les architectes ont d\u00e9ploy\u00e9 un b\u00e2timent en U, fragmentant ses 19 000 m\u00b2 de bureaux en plusieurs volumes. Cette implantation permet de multiplier les fa\u00e7ades, d\u2019apporter lumi\u00e8re naturelle et transparences, et d\u2019offrir des espaces ext\u00e9rieurs accessibles. <em>\u00ab Dans un environnement domin\u00e9 par le b\u00e9ton et la min\u00e9ralit\u00e9, la respiration qu\u2019offre le c\u0153ur paysager dessine une oasis urbaine bienvenue. \u00bb<\/em> La sobri\u00e9t\u00e9 des lignes et la r\u00e9p\u00e9tition des trames du b\u00e2timent renvoient elles directement \u00e0 l\u2019identit\u00e9 architecturale de la Part-Dieu.<\/p>\n<div id=\"attachment_113588\" style=\"width: 584px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-113588\" class=\" wp-image-113588\" src=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/06\/Photo-2-LyonPartDieu_CiteAdminastriveEtat_@nfussler_41-scaled.jpg\" alt=\"\" width=\"574\" height=\"382\" \/><p id=\"caption-attachment-113588\" class=\"wp-caption-text\">Les platanes centenaires conserv\u00e9s structurent l\u2019organisation en U et cr\u00e9ent un filtre naturel, jouant un r\u00f4le bioclimatique essentiel.<\/p><\/div>\n<h2>La trame comme fil conducteur<\/h2>\n<p>En effet, le quartier d\u2019affaires, le deuxi\u00e8me en France apr\u00e8s La D\u00e9fense, avec son h\u00e9ritage des ann\u00e9es 1970, est marqu\u00e9 par la r\u00e9p\u00e9tition des trames et une palette chromatique min\u00e9rale allant du gris au sable. Les architectes ont choisi de prolonger ce vocabulaire en lui donnant une dimension contemporaine. <em>\u00ab Nous avons travaill\u00e9 avec la trame comme fil conducteur, h\u00e9rit\u00e9e de l\u2019identit\u00e9 du quartier, mais en lui donnant une \u00e9paisseur constructive et une mat\u00e9rialit\u00e9 actuelle \u00bb,<\/em> r\u00e9sume William Vassal.<\/p>\n<p>Mais les architectes sont all\u00e9s plus loin que simple r\u00e9interpr\u00e9tation, ils ont fait de cette trame un outil de pr\u00e9fabrication et d\u2019assemblage. En effet, derri\u00e8re la r\u00e9gularit\u00e9 de la trame se cachent des modules d\u2019une grande technicit\u00e9. Ainsi, la fa\u00e7ade n\u2019est pas un simple habillage, mais un syst\u00e8me complet, pens\u00e9 pour r\u00e9pondre aux probl\u00e9matiques d\u2019efficacit\u00e9 constructive, de performance environnementale et bien s\u00fbr de design et de coh\u00e9rence architecturale. Qui plus est, l\u2019enveloppe protectrice a \u00e9t\u00e9 con\u00e7ue comme un syst\u00e8me capable de s\u2019adapter aux contraintes d\u2019exposition et d\u2019usage des diff\u00e9rentes parties de l\u2019ouvrage.<\/p>\n<div class=\"mceTemp\"><\/div>\n<div id=\"attachment_113593\" style=\"width: 397px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-113593\" class=\" wp-image-113593\" src=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/06\/Photo-3-LyonPartDieu_CiteAdminastriveEtat_@nfussler_15-copie-2.jpeg\" alt=\"\" width=\"387\" height=\"580\" \/><p id=\"caption-attachment-113593\" class=\"wp-caption-text\">Les fa\u00e7ades ext\u00e9rieures adoptent un syst\u00e8me modulaire pr\u00e9fabriqu\u00e9 \u00e0 ossature bois, rythm\u00e9 par des montants obliques color\u00e9s et des variations de vitrages selon l\u2019orientation.<\/p><\/div>\n<h2>FOB \u00e0 tout les \u00e9tages<\/h2>\n<p>Au plan technique, cela se traduit par un syst\u00e8me hybride : un squelette en b\u00e9ton bas carbone, poteaux-poutres, garantissant inertie et acoustique, associ\u00e9 \u00e0 des fa\u00e7ades l\u00e9g\u00e8res en ossature bois pr\u00e9fabriqu\u00e9es hors site (FOB). Ce choix permet de r\u00e9pondre \u00e0 une double exigence : robustesse structurelle et r\u00e9duction de l\u2019empreinte carbone. Les fa\u00e7ades, fabriqu\u00e9es par Techniwood, sont des modules complets \u2013 isolation thermique int\u00e9gr\u00e9e, menuiseries pos\u00e9es, parements ext\u00e9rieurs d\u00e9j\u00e0 assembl\u00e9s \u2013 livr\u00e9s sur chantier pr\u00eats \u00e0 installer.<\/p>\n<p>Cette option technique a \u00e9galement facilit\u00e9 le d\u00e9roulement du chantier en plein c\u0153ur de Lyon. Les difficult\u00e9s de stockage, la promiscuit\u00e9 avec d\u2019autres op\u00e9rations en cours et l\u2019impossibilit\u00e9 d\u2019un montage traditionnel l\u2019ont quasi impos\u00e9e. <em>\u00ab La pr\u00e9fabrication bois nous a permis de travailler en temps masqu\u00e9 et de livrer une enveloppe pr\u00e9cise et homog\u00e8ne. C\u2019\u00e9tait la seule r\u00e9ponse pour r\u00e9duire les nuisances et garantir la qualit\u00e9 d\u2019ex\u00e9cution \u00bb<\/em>, explique William Vassal. L\u2019absence d\u2019\u00e9chafaudages, la rapidit\u00e9 de mise en \u0153uvre et la s\u00e9curit\u00e9 accrue pour les compagnons sont venus compl\u00e9ter ces avantages. <em>\u00ab La fa\u00e7ade bois pr\u00e9fabriqu\u00e9e \u00e9tait autant une r\u00e9ponse environnementale qu\u2019un choix pragmatique, insiste William Vassal. Elle nous a permis d\u2019allier performance thermique, ma\u00eetrise des d\u00e9lais et qualit\u00e9 d\u2019ex\u00e9cution. \u00bb<\/em><\/p>\n<div id=\"attachment_113594\" style=\"width: 566px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-113594\" class=\" wp-image-113594\" src=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/06\/Photo-5-MG_E7141-scaled.jpg\" alt=\"\" width=\"556\" height=\"417\" \/><p id=\"caption-attachment-113594\" class=\"wp-caption-text\">Chaque panneau de fa\u00e7ade bois, livr\u00e9 complet avec isolation et menuiseries, est directement fix\u00e9 \u00e0 la structure b\u00e9ton, garantissant pr\u00e9cision d\u2019ex\u00e9cution et chantier \u00e0 faible nuisance.<\/p><\/div>\n<h2>Deux familles de fa\u00e7ades<\/h2>\n<p>Si l\u2019ossature et le proc\u00e9d\u00e9 constructif sont communs, le dessin des fa\u00e7ades varie selon les expositions. En p\u00e9riph\u00e9rie, soumises aux apports solaires directs et aux contraintes de s\u00e9curit\u00e9, elles reposent sur quatre modules types. Chacun reprend une trame ext\u00e9rieure fixe mais introduit un montant oblique color\u00e9 dont l\u2019angle \u00e9volue, cr\u00e9ant un effet cin\u00e9tique. La surface vitr\u00e9e est modul\u00e9e selon l\u2019orientation : r\u00e9duite au sud pour limiter les surchauffes estivales, plus g\u00e9n\u00e9reuse ailleurs pour favoriser l\u2019apport de lumi\u00e8re naturelle.<\/p>\n<p>Autour du c\u0153ur v\u00e9g\u00e9tal, le traitement se fait plus sobre. Les mod\u00e9natures verticales et horizontales s\u2019affinent progressivement, jusqu\u2019\u00e0 dispara\u00eetre sur la fa\u00e7ade passerelle, \u00e9pur\u00e9e et lisse. <em>\u00ab Cette gradation exprime le rapport particulier entre l\u2019architecture et les platanes centenaires conserv\u00e9s, dont l\u2019ombre et la densit\u00e9 de feuillage assurent un r\u00f4le bioclimatique en r\u00e9gulant lumi\u00e8re et chaleur \u00bb,<\/em> expliquent les architectes.<\/p>\n<div id=\"attachment_113592\" style=\"width: 629px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-113592\" class=\"wp-image-113592\" src=\"https:\/\/batijournal.com\/wp-content\/uploads\/2026\/06\/Capture-decran-2026-06-03-a-15.29.25.png\" alt=\"\" width=\"619\" height=\"397\" \/><p id=\"caption-attachment-113592\" class=\"wp-caption-text\">En retrait du centre commercial, la passerelle relie les deux ailes principales et s\u2019ouvre sur une grande terrasse sud, espace de convivialit\u00e9 et de respiration.<\/p><\/div>\n<p>La sobri\u00e9t\u00e9 revendiqu\u00e9e du b\u00e2timent n\u2019exclut pas la subtilit\u00e9. Le jeu discret des obliques, la variation des largeurs vitr\u00e9es, l\u2019alternance des mod\u00e9natures produisent un rythme qui anime l\u2019ensemble sans rompre son homog\u00e9n\u00e9it\u00e9. <em>\u00ab La r\u00e9p\u00e9tition devient ainsi le support d\u2019une variation ma\u00eetris\u00e9e, garantissant \u00e0 la fois efficacit\u00e9 et identit\u00e9 \u00bb<\/em> se f\u00e9licite William Vassal.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans un quartier lyonnais en renouvellement urbain le nouveau Centre Administratif d\u2019\u00c9tat dessine une nouvelle urbanit\u00e9. Autour d\u2019une all\u00e9e de platanes centenaires pr\u00e9serv\u00e9e, Sn\u00f8hetta Studio Paris et Z Architecture signent un b\u00e2timent sobre, modulable, performant et r\u00e9pondent au triptyque: h\u00e9ritage architectural, innovation constructive et ambition environnementale.<\/p>\n","protected":false},"author":1,"featured_media":113597,"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":[10736,6340],"tags":[],"class_list":["post-113587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-architecture-conception"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Et au milieu une all\u00e9e de platanes<\/title>\n<meta name=\"description\" content=\"Dans un quartier lyonnais en renouvellement urbain le nouveau Centre Administratif d\u2019\u00c9tat dessine une nouvelle urbanit\u00e9. 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