{"id":51214,"date":"2026-02-25T13:59:44","date_gmt":"2026-02-25T12:59:44","guid":{"rendered":"https:\/\/www.deschacht.eu\/project\/vervanging-van-een-oud-betonnen-bufferbekken-door-een-tubao-tank-van-150-m%c2%b3\/"},"modified":"2026-03-02T09:14:37","modified_gmt":"2026-03-02T08:14:37","slug":"remplacement-dun-ancien-bassin-beton-par-une-cuve-tubao-de-150-m%c2%b3","status":"publish","type":"portfolio","link":"https:\/\/www.deschacht.eu\/fr\/project\/remplacement-dun-ancien-bassin-beton-par-une-cuve-tubao-de-150-m%c2%b3\/","title":{"rendered":"ULB Bruxelles : remplacement d\u2019un ancien bassin b\u00e9ton par une cuve Tubao de 150 m\u00b3"},"content":{"rendered":"<div class=\"wpb-content-wrapper\">[vc_row][vc_column width=&#8221;2\/3&#8243;][vc_column_text css=&#8221;&#8221;]\n<p style=\"font-weight: 400;\">Sur le campus de l\u2019Universit\u00e9 libre de Bruxelles, un ancien ouvrage de r\u00e9tention des eaux pluviales ne remplissait plus son r\u00f4le. Fissur\u00e9 et non \u00e9tanche, ce bassin en b\u00e9ton devait \u00eatre remplac\u00e9 rapidement, sans alourdir les travaux de terrassement ni perturber l\u2019environnement urbain dense. Avec Val Terra, entrepreneur en travaux publics et priv\u00e9s bas\u00e9 \u00e0 Jodoigne, Deschacht a propos\u00e9 une solution technique efficace : une cuve Tubao en acier galvanis\u00e9 de 150 000 litres, install\u00e9e\u2026 de nuit.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Un ancien ouvrage devenu inefficace<\/strong><\/h3>\n<p style=\"font-weight: 400;\">Sous une zone verte du campus de l\u2019ULB se trouvait un vaste r\u00e9servoir en b\u00e9ton coul\u00e9 sur place, d\u2019un volume sup\u00e9rieur \u00e0 300 m\u00b3. Avec le temps, l\u2019ouvrage s\u2019est fortement d\u00e9grad\u00e9 : fissures, pertes d\u2019\u00e9tanch\u00e9it\u00e9 et absence de r\u00e9tention r\u00e9elle des eaux pluviales provenant du b\u00e2timent voisin.<\/p>\n<p style=\"font-weight: 400;\">\u00ab La r\u00e9paration \u00e9tait techniquement possible, mais \u00e9conomiquement peu pertinente, notamment au vu des travaux de terrassement n\u00e9cessaires pour rendre l\u2019ensemble \u00e0 nouveau \u00e9tanche \u00bb, explique Valentin Callewaert, le patron de Val Terra.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Une solution Tubao bien pens\u00e9e<\/strong><\/h3>\n<p style=\"font-weight: 400;\">D\u00e8s les premi\u00e8res r\u00e9flexions, Val Terra a envisag\u00e9 l\u2019installation d\u2019une cuve Tubao et a alors sollicit\u00e9 un accompagnement technique aupr\u00e8s de Deschacht afin de v\u00e9rifier la faisabilit\u00e9 du projet.<\/p>\n<p style=\"font-weight: 400;\">Avec le support de service d\u2019\u00e9tudes, le choix s\u2019est port\u00e9 sur un bassin de r\u00e9tention en acier galvanis\u00e9 Tubao de 150 m\u00b3, parfaitement dimensionn\u00e9 en longueur et en diam\u00e8tre. L\u2019un des avantages cl\u00e9s : la nouvelle cuve pouvait \u00eatre install\u00e9e \u00e0 l\u2019int\u00e9rieur m\u00eame de l\u2019ancien ouvrage b\u00e9ton, sans devoir d\u00e9molir l\u2019ensemble.<\/p>\n<p style=\"font-weight: 400;\">R\u00e9sultat : une r\u00e9duction significative des volumes de terrassement, un gain de temps sur le chantier, et la limitation des interventions lourdes en milieu urbain.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Logistique urbaine et installation nocturne<\/strong><\/h3>\n<p style=\"font-weight: 400;\">La localisation du chantier, en plein c\u0153ur de Bruxelles, imposait des contraintes logistiques majeures. Le transport exceptionnel de la cuve Tubao n\u2019\u00e9tait tout simplement pas envisageable en journ\u00e9e.<\/p>\n<p style=\"font-weight: 400;\">La solution : une livraison et une pose de nuit, coordonn\u00e9es par Val Terra en concertation avec l\u2019ULB et Deschacht. Le carrefour situ\u00e9 \u00e0 l\u2019entr\u00e9e du campus a \u00e9t\u00e9 bloqu\u00e9 bri\u00e8vement afin de permettre la man\u0153uvre, le d\u00e9chargement et la mise en place de la cuve \u00e0 l\u2019aide de deux grues.<\/p>\n<p style=\"font-weight: 400;\">\u00ab C\u2019\u00e9tait une op\u00e9ration millim\u00e9tr\u00e9e, mais parfaitement ma\u00eetris\u00e9e \u00bb, souligne Samuel Mazzacavallo. \u00ab Val Terra a assur\u00e9 la coordination compl\u00e8te, avec un timing pr\u00e9cis et une s\u00e9curit\u00e9 irr\u00e9prochable. \u00bb<\/p>\n<h3 style=\"font-weight: 400;\"><strong>R\u00e9utilisation des eaux pluviales et r\u00e9seau reconstitu\u00e9<\/strong><\/h3>\n<p style=\"font-weight: 400;\">Les eaux pluviales de toiture sont aujourd\u2019hui collect\u00e9es via l\u2019\u00e9gouttage existant et stock\u00e9es dans la cuve Tubao. Elles sont ensuite r\u00e9utilis\u00e9es comme eau sanitaire pour alimenter certains WC et points d\u2019eau du b\u00e2timent.<\/p>\n<p style=\"font-weight: 400;\">Apr\u00e8s la pose de la citerne, Val Terra a reconstitu\u00e9 l\u2019ensemble du r\u00e9seau d\u2019\u00e9gouttage, garantissant une int\u00e9gration optimale de la solution dans l\u2019infrastructure existante.<\/p>\n<p style=\"font-weight: 400;\">\u00ab La solution Tubao s\u2019est r\u00e9v\u00e9l\u00e9e simple \u00e0 mettre en \u0153uvre, fiable et parfaitement adapt\u00e9e au contexte du chantier \u00bb, conclut Samuel Mazzacavallo.<\/p>\n[\/vc_column_text]<style type=\"text\/css\" >#b_3dfqvd3fy0hwzvlttmia a{color:#ffffff; background:#082C5D; margin-top:px; margin-bottom:px;  margin-left:px; margin-right:px; font-weight:700; border-radius:8px;}#b_3dfqvd3fy0hwzvlttmia a:hover{color:#ffffff ; background:#FCF6E3 ;}<\/style><div class=\"ta_left tf_btn_pos\" id=\"b_3dfqvd3fy0hwzvlttmia\" ><a class=\"rd_normal_bt medium_rd_bt bt_icon_right   \" href=\"https:\/\/www.deschacht.eu\/fr\/contact-travaux-routiers-et-degouttage\" target=\"\"   ><span>Contactez notre \u00e9quipe Travaux routiers et d\u2019\u00e9gouttage<\/span><i class=\"fa-arrow-right\" ><\/i><\/a><\/div><style type='text\/css'> @font-face{font-family: 'fa'; 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