Charles-de-Gaulle Bridge (Paris, France)

Participation in the execution design studies of the deck and its steel supports. Double box girder structure with 3 spans 68m-84m-55m with a total length of 200m for a deck width of 34.90m.  The supports on piles consist of steel braces assembled in the shape of an inverted cone (corolla). The audacious architecture and the installation procedure of the structure imposed a complete finite element simulation, see details in “Campan, V. / Cazenave, M. / Mangin, Y. M. / Saouridis, C. (1996): Finite element calculation of the Charles de Gaulle bridge, Revue Construction Métallique, n. 1 (1996) “.

Client : City of Paris

Architects: Roman Karansinski, Roman Karansinski

Initial structural design office : PX Consultants

Execution structural design office: Centre technique Industriel de la Construction Métallique (Industrial Technical Centre for Steel Construction)

General contractor: Bouygues Construction

Steel construction: Baudin-Châteauneuf and Eiffel Construction Métallique

Our client: Industrial Technical Centre for Steel Construction

Austreberthe Viaduct (A150 Villers-Ecales, France)

The bridge crosses the Austreberthe valley (Normandy, Seine Maritime).

The structure is of the double composite girder type with composite transversal and cantilever beams. It consists of 6 spans for a total length of approximately 471m. The deck supports 2×2 traffic lanes plus two emergency lanes for a total width of 21.6m.

We have elaborated the complete execution design study of the steel structure of the deck including the study of the launching as a subcontractor of the steel fabricator Victor Buyck S.C.

Architects: Cabinet STRATES

Project manager: ALBEA

General contractor: NGE and Razel-Bec (Fayat Group)

Steel fabricator: Victor Buyck Steel Construction

Photos: Victor Buyck Steel Construction

Vendenheim Viaduct (A355/A4 Vendenheim, France)

The viaducts are part of the Strasbourg western bypass operation (link between A355 and A4).
This is a double viaduct (South and North) with a total length of approximately 450 m and 8 spans with a curvature in plan with a radius of approximately 1700m. The south viaduct is a double composite girder structure steel transverse beams (deck width 13.8 m), while the north viaduct is a double girder structure with composite transversal and cantilever beams.
On behalf of our client Eiffage Métal, we carried out the execution design studies for the steel structure of the deck of both viaducts.

Builder and concessionaire: ARCOS (Vinci group)

Steel fabricator : Eiffage Métal

Photos: Eiffage Métal

Widening of the Avenue of France (Dalle T4, Paris 13^e France)

Execution design studies for the steel structures of the covering works between Avenue de France, Boulevard Vincent Auriol, the real estate lots T5A and T10, the planted promenade. These works are part of the development of the Paris left bank ZAC (Joint Development Zone) piloted by SEMAPA.

The main beam is a steel box girder with the following characteristics:

• Constant external section of 3m x 3m,
• Isostatic span of about 80 m.

The caisson supports the secondary beams of the Avenue de France on one side, and those of the T4 slab on the other side. All these beams are fixed on the sides of the main box girder by means of welded

Saône Viaduct (A406 Mâcon, France)

The structure is part of the southern bypass of Macon on the A406 motorway. It is a 7-span continuous composite girder with composite transversal and cantilever beams (central spans of 72.2m) with a total length of ~450m and a slab width of 21.7m. Its plan layout is circular with radius R=1900m.

We carried out the execution design study of the steel structure of the deck as a design office subcontractor of Eiffel Construction Métallique. First application of the regulatory framework of the Eurocodes for bridges (2008).

Conceptual design: EGIS

Builder and concessionaire: APRR (Eiffage Group)

General contractor : Demathieu & Bard / Material / Valerian

Steel fabricator : Eiffel Construction Métallique

Centron downstream viaduct (RN90 Centron, France)

Execution design study as subcontractor to Eiffel Construction Métallique of the access viaduct linking the Siaix tunnel to the main viaduct structure. The access section is a twin composite girder with composite transversal and cantilever beams with a total length of approximately 70m.

Owner: Ministry of Public Works, Transport, Housing, Tourism and the Sea

Conceptual design: Savoie Departmental Public Works Department

Conceptual structural design: Tonello Consulting Engineers

Architects: Strata / Berlottier Architects

Contractors : Demathieu & Bard/Eiffel Construction Métalliquee/GTM Construction