Piles and micropiles

Techniques

Piles and micropiles

A pile is a structural element driven into the soil for transferring loads and prevent deformation. Its slenderness ratio is not limited.
Pile shafts can be uniform and rectilinear, telescopic and belled out.
Piles can be installed either separately or in groups. They can also form a retaining wall, a mixed curtain wall, contiguous piles, secant piles and composite curtain walls, such as Berlin walls and similar. Piles are also used as precast beams to be placed in the structure of the building they support.

There are three main types of piles:

Dsiplacement piles, bored piles and micropiles. Displacement piles are drilled piles and can be either precast or cast-in-place. Soletanche Bachy has developed a cast-in-place rotary displacement pile marketed under the trade-mark SCREWSOL® , which combines enhanced friction capacity with the creation of a thread around the pile casing, that significantly increases pile bore diameter.

Soletanche Bachy has also developed a displacement pile fitted with a telescopic tremie pipe, marketed under the name REFSOL.

Bored tiles are made in many different forms:
- cased piles,
- slurry piles, including barrettes,
- continuous auger piles.
Soletanche Bachy has developed highly-sophisticated machines with excellent productivity for the construction of piles. The machines carry electronic systems to ensure perfect results every time. The STARSOL® process, for example, is fitted with a telescopic tremie pipe and allows the construction of piles down to 32 m, with diameters ranging from 420 mm to 1,200 mm. Boring and concreting are monitored on an ongoing basis.

Micropiles are bored piles with a diameter of under 300 mm and displacement piles with a diameter of under 150 mm.
The pile shafts comprise either steel rods or a steel tube or a an H-type profile.

Réalisations

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

Isséane

Work : BUILDING,URBAN EXCAVATIONS | Year : | Location : FRANCE

Deep foundations works for a household waste treatment plant.

A498.pdf

Nile City - Cairo

Work : BUILDING,URBAN EXCAVATIONS | Year : 1998-1999 | Location : EGYPT

Retaining wall and foundations for 36-storey property with four basement levels.

A350.pdf

Marina bay sands

Work : BUILDING,URBAN EXCAVATIONS | Year : 2007 | Location : SINGAPORE

Basement retaining walls and foundations for 3 high rise hotels

A496.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

Carrefour Romarin - La Madeleine

Work : ROAD STRUCTURES | Year : 2006 | Location : FRANCE

Sensitive geotechnical works for the Grand Boulevard roadway drop.

A512.pdf

Alexis storm water tank

Work : STORM WATER TANK | Year : 2007 | Location : FRANCE

Construction of a 4,500m³ capacity storm water tank.

A513.pdf

Moma Sands jetty

Work : MARITIME WORK | Year : 2005-2006 | Location : MOZAMBIQUE

Construction of a 405m long jetty, 16m above sea level.

A499.pdf

Quai Carnot - Concarneau Harbour

Work : MARITIME WORK ,REHABILITATION OF STRUCTURES AND UNDERPINNING WORKS | Year : 1998 | Location : FRANCE

Reinforcing a quay wall with reinforced Jet grouting columns (double Jet).

A321.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

Brest - dry dock no1

Work : MARITIME WORK | Year : 2006-2008 | Location : FRANCE

Widening and modernisation of Dry Dock N°1 at the Brest Port de Commerce.

A477.pdf

Terminal Cuenca del Plata

Work : MARITIME WORK | Year : 2009 | Location : URUGUAY

Constructing an extension to the Cuenca del Plata port terminal as a general contractor

A533.pdf

Carré Royal - Reims

Work : 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.

A523.pdf

General Lázaro Cárdenas Refinery - Minatitlan

Work : PLATFORMS | Year : 2005-2007 | Location : MEXICO

Soil improvement and deep foundations works for the construction of an oil refinery.

A508.pdf

Clarke Quay station and tunnels

Work : METROS,RAILWAY WORKS,TUNNELS | Year : 1997 - 1999 | Location : SINGAPORE

Geotechnical works associated with the construction of a major underground station for the Singapore MRT North East Line.

A351.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

Tenay Viaduct - Argis-Tenay diversion

Work : ROAD STRUCTURES | Year : 1994 | Location : FRANCE

Building round protective excavation structures in order to protect a viaduct pile bedplate-micropile link.

A242.pdf

Safina Dry Dock - Hydrolift

Work : 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.

A509.pdf