Category: Road bridges
Services: Detailed design
Period: October 2018– November 2019
Client: BIT spa – Mont Blanc Motorway and Tunnel Company
Bonneville, France
Bonneville Viaduct on the Highway of the Mont Blanc
Detailed design of steel structures.
The Bonneville motorway viaduct consists of a girder deck in a composite system, simply supported over a span of 44 m. The 8 beams that compose it are coupled two by two, by means of I-section crosspieces 700 mm high.
The Bonneville motorway viaduct consists of a girder deck in a composite system, simply supported over a span of 44 m. The 8 beams that compose it are coupled two by two, by means of I-section crosspieces 700 mm high.
The insertion of the structure in a zone strongly constrained by the interfering roads, imposed severe limitations on the heights of the beams ( Hmax = 1.1 m) , an aspect that led to thick flanges (maximum thickness 80 mm) and consequently required the imposition of important cambers (300 mm for the external beam on the “Macon” side).
The insertion of the structure in a zone strongly constrained by the interfering roads, imposed severe limitations on the heights of the beams ( Hmax = 1.1 m) , an aspect that led to thick flanges (maximum thickness 80 mm) and consequently required the imposition of important cambers (300 mm for the external beam on the “Macon” side).