Techniques
Ground anchors
A ground anchor is a load transfer system designed to transfer the forces applied to it to a competent stratum. An anchor is said to be temporary if it has a lifespan of under two years and permanent if the lifespan is over two years.
An anchor comprises three parts:
- The head, transmitting the anchor force to the structure via the bearing plate.
- The free length of tendon, from the head to the near end of the anchorage.
- The grouted anchorage, which is the length of tendon by which the tensile force is transmitted to the surrounding ground through the grout.
There are "active" and "passive" soil anchors:
• A passive anchor is only tensioned by the structure itself applying load to it. It does not usually have a free length of tendon. Generally speaking, the tendon is made of steel or an alloy.
An anchor is said to be temporary if it has a lifespan of under two years and permanent if the lifespan is over two years
• An active anchor is pre-tensioned before it takes up the load, which prevents distortion of the structure. The tendon is usually made of pre-tensioned steel cables.
Réalisations
Voie des Mercureaux - Head of Bois du Peu TunnelWork : ROAD STRUCTURES,TUNNELS | Year : 2004 | Location : FRANCE
Anchored walls to reinforce side embankments and portals of a double-tube tunnel head.
Climespace Refrigerating PlantWork : 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.
IsséaneWork : BUILDING,URBAN EXCAVATIONS | Year : | Location : FRANCE
Deep foundations works for a household waste treatment plant.
Nile City - Cairo Work : BUILDING,URBAN EXCAVATIONS | Year : 1998-1999 | Location : EGYPT
Retaining wall and foundations for 36-storey property with four basement levels.
Oxygene tower, Lyon Work : BUILDING,URBAN EXCAVATIONS | Year : 2007 2008 | Location : FRANCE
The 115m high Tour Oxygène building backs on to the Part Dieu shopping centre in the heart of the business quarter of Lyon.
Industria MinerveWork : URBAN EXCAVATIONS | Year : 2008 | Location : MONACO
Excavation with Berlin-type walls for the construction of 4 residential buildings with 267 parking places.
Culture and Exhibition CentreWork : BUILDING,URBAN EXCAVATIONS | Year : 1996 | Location : MONACO
A turnkey 17 000 m2 excavation.
Carrefour Romarin - La MadeleineWork : ROAD STRUCTURES | Year : 2006 | Location : FRANCE
Sensitive geotechnical works for the Grand Boulevard roadway drop.
T 33 TunnelWork : ROAD STRUCTURES,TUNNELS | Year : 2005-2006 | Location : MONACO
Road tunnel excavated through rock, 55 to 85 m² excavated section
Concarneau dry dockWork : MARITIME WORK | Year : 2001 | Location : FRANCE
Design and construction as main contractor of dry dock, length 130m, width 27m, depth 10.80m.
Baudoyer car parkWork : UNDERGROUND CAR PARKS ,URBAN EXCAVATIONS | Year : 1995 | Location : FRANCE
Design and construction of 5-level 320 place underground car park.
McDermott TerminalWork : MARITIME WORK | Year : 2009 | Location : MEXICO
Construction of a terminal for constructing and launching offshore oil platforms
Brest - dry dock no1Work : MARITIME WORK | Year : 2006-2008 | Location : FRANCE
Widening and modernisation of Dry Dock N°1 at the Brest Port de Commerce.
Carré Royal - ReimsWork : REHABILITATION OF STRUCTURES AND UNDERPINNING WORKS,URBAN EXCAVATIONS | Year : 2006 | Location : FRANCE
Facades underpinning and creating a new excavation within the perimeter of the former Galeries Rémoises.
Toulouse metro, B Line, Contract No 3Work : METROS,RAILWAY WORKS,SHAFTS,TUNNELS | Year : 2001 - 2005 | Location : FRANCE
Construction of 1.1 km of tunnel, an underground station and 2 shafts.
Larvotto hotel complexWork : 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.
Port 2000 quayside 1 to 4Work : MARITIME WORK | Year : 2001-2005 | Location : FRANCE
Realisation of the first 4 quayside berths for Port 2000 operation (1,602m of length)
Provence Opera buildingWork : UNDERGROUND CAR PARKS ,URBAN EXCAVATIONS | Year : 1992 | Location : FRANCE
Heavy duty, composite material ground soil anchors.
Rivière des Pluies viaduct - Saint-Denis, La Réunion islandWork : ROAD STRUCTURES | Year : 2006-2007 | Location : FRANCE
Foundations of the viaduct and protection of the embankment works.
Safina Dry Dock - HydroliftWork : MARITIME WORK | Year : 2005 - 2006 | Location : UNITED ARAB EMIRATES
The Dubai Drydocks naval shipyard has extended its capacities by commissioning a hydrolift for the construction and repair of floating equipment. This structure was entirely completed by Soletanche Bachy acting as the main contractor under a design and build contract.
Monacan institute of sports medicineWork : BUILDING,URBAN EXCAVATIONS | Year : 2005 | Location : MONACO
The construction of retaining walls 38m high in a cliff and earthworks tunneled with explosives.
Voyage au coeur de l'ingénierie de pointe
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