Soletanche Freyssinet

Thierry Jeanmaire

Erik Mellier

Michel Coudry

Bertrand Steff De Verninac

Jean Michel Jeanty

Memphis Loygue

Nicolas Demey

Marco Novarin

Pierre Schmitt

The invention relates to an anchor device for a prestressed diaphragm wall, comprising at least one prestressing reinforcement and a sleeve encasing said at least one prestressing reinforcement and forming an anchorage for said at least one prestressing reinforcement in the diaphragm wall, a length (Ld) of the anchor sleeve being strictly less than a length (La) of said at least one prestressing reinforcement, the anchor sleeve comprising a sealing material disposed in such a way as to coat each prestressing reinforcement, the anchor device comprising a corrosion-resistant coating of each prestressing reinforcement.

Anchor device for prestressed diaphragm wall

The invention relates to a retaining work () in ground (S), the work having a vertical front portion and separating a first portion of ground (S) from a second portion of ground. The front portion () is in the form of juxtaposed arched walls (), each arched wall () presenting a concave side facing the first portion of ground and a convex side facing the second portion of ground, and the retaining work () further includes a rear portion () comprising a plurality of wall elements () having their largest faces extending vertically in the second portion of ground (S), each wall element () being arranged between two adjacent arched walls () and extending transversely relative to the front portion ().

Wharf constituted by arched walls and plane ties

The invention relates to a prestressed diaphragm wall in the ground () including a concrete panel (), at least one anchor tube open at its upper end () and closed at its lower end () and, embedded at least partially in the concrete panel, at least one cable () extending inside the anchor tube (), a lower portion of the cable () being fixed to said tube (), and a cable anchoring system (), configured to hold the cable in tension () and secure its upper portion () to the upper portion of the concrete panel (). It also relates to a method for making a prestressed diaphragm wall.

Pre-stressed molded wall, and method for creating such a wall

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Houilles, France

Thierry Jeanmaire