Techniques

Retaining structures

A retaining shell is a slim shell structure used during vertical excavations. Unlike retaining walls, the weight of a retaining shell has little effect on its capacity to balance the pressures.

Retaining structures include

- continuous walls: diaphragm wall, precast wall, sheet-piling curtain, slurry cut-off wall, secant piles, etc.



- discontinuous walls: Berlinese wall, Parisian wall, Lutitian-type wall, Moscow-type wall, etc.


Réalisations

Voie des Mercureaux - Head of Bois du Peu Tunnel

Work : ROAD STRUCTURES,TUNNELS | Year : 2004 | Location : FRANCE

Anchored walls to reinforce side embankments and portals of a double-tube tunnel head.

A449.pdf

Axe Littoral - Geomix retaining wall

Work : ROAD STRUCTURES | Year : 2009 | Location : FRANCE

Construction of a Geomix retaining wall to allow the deviation of a sewer.

A527.pdf

Climespace Refrigerating Plant

Work : REHABILITATION OF STRUCTURES AND UNDERPINNING WORKS,URBAN EXCAVATIONS | Year : 2005 | Location : FRANCE

Special foundations for the construction of a refrigeration plant under the Palais de Tokyo in Paris.

A500.pdf

M'Bopicua

Work : MARITIME WORK | Year : 2002 - 2003 | Location : URUGUAY

Turnkey design and build contract for a port logistics terminal.

A452.pdf

Marché Neuf car park

Work : UNDERGROUND CAR PARKS ,URBAN EXCAVATIONS | Year : 2005-2007 | Location : FRANCE

Acting as the main contractor for the construction of an underground car park in Saint-Germain-en-Laye

A453.pdf

Bourg - Bellegarde line - Contract 1

Work : RAILWAY WORKS,TUNNELS | Year : 2008 | Location : FRANCE

Upgrade of tunnels, creation of an underpass, construction of a bridge and other civil engineering works to modernize a railway.

A538.pdf

Industria Minerve

Work : URBAN EXCAVATIONS | Year : 2008 | Location : MONACO

Excavation with Berlin-type walls for the construction of 4 residential buildings with 267 parking places.

A521.pdf

Tihange Nuclear Power Station

Work : TUNNELS | Year : 1988 1989 | Location : BELGIUM

Installing four water inlet and outlet ducts under a nuclear plant cooling canal.

A325.pdf

T 33 Tunnel

Work : ROAD STRUCTURES,TUNNELS | Year : 2005-2006 | Location : MONACO

Road tunnel excavated through rock, 55 to 85 m² excavated section

A510.pdf

Concarneau dry dock

Work : MARITIME WORK | Year : 2001 | Location : FRANCE

Design and construction as main contractor of dry dock, length 130m, width 27m, depth 10.80m.

A390.pdf

Canary Wharf Heron Quay

Work : BUILDING,URBAN EXCAVATIONS | Year : 1999-2000 | Location : UNITED KINGDOM

Basement walls and bearing piles for a major commercial development.

A371.pdf

Larvotto hotel complex

Work : BUILDING,URBAN EXCAVATIONS | Year : 2003 | Location : MONACO

Deep foundations constructed on a quay reclaimed from the sea which comprised loosely placed larger rock ballast to form the embankment.

A439.pdf

Boulogne-Billancourt - Rehabilitation of the Trapèze East ground

Work : ENVIRONMENT | Year : 2007-2008 | Location : FRANCE

Cleaning up works on a part of a former automotive factory

A495.pdf

Monacan institute of sports medicine

Work : BUILDING,URBAN EXCAVATIONS | Year : 2005 | Location : MONACO

The construction of retaining walls 38m high in a cliff and earthworks tunneled with explosives.

A451.pdf


Voyage au coeur de l'ingénierie de pointe

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