REMPIÉTEMENT DU QUAI DE L'USINE TECHNIP FLEXI FRANCE DU TRAIT (76)

摘要

LE VIEUX QUAI DU TRAIT, UNE COMMUNE DE NORMANDIE (76) SITUÉE EN RIVE DROITE DES BOUCLES DE LA SEINE, POURSUIT LA LONGUE MUTATION QU'IL A ENTAMÉE DEPUIS L'IMPLANTATION DE L'USINE TECHNIP FLEXI FRANCE DE FABRICATION DE CONDUITES FLEXIBLES MULTICOUCHES DESTINÉES À L'INDUSTRIE PÉTROLIÈRE SOUS-MARINE. EN 2014 ET 2015, IL A AINSI FAIT L'OBJET DE TRAVAUX DE RENFORCEMENT DE SON SOUTÈNEMENT ET D'UN APPROFONDISSEMENT DE SA SOUILLE POUR AMÉLIORER SA CAPACITÉ D'ACCUEIL TOUT EN RENDANT ADMISSIBLE SON EXPLOITATION SELON UN SCHÉMA DÉCOUPANT SON TERRE-PLEIN EN ZONES DE CHARGEMENT À 3 ET 10 T/M~2.%The quay of Technip's Flexi France du Trait plant, an old metal sheet piling structure dating from the end of the 1950s having a main curtain with an anchor curtain and two layers of tie anchors, was underpinned in 2014 and 2015. The works consisted of enlarging the front curtain abutment by placing against it a series of upright sections held in position by two reinforced concrete structures at the top and in the submerged zone, and also by nailing the open area on the quay edge against potential instabilities such as a major landslide or a Krantz type instability, by means of a second series of sections. The works also involved dredging, placing curtains on the quay sides and replacing the dock face. The quay can now receive the most recent vessels of Technip's fleet and continue to operate under loads of 3 or 10 tonnes/m~2.