Category: Erections
Services: Final Design
Period: October 2018– November 2019
Client: BIT spa – Mont Blanc Motorway and Tunnel Company
Bonneville, France
Bonneville Viaduct Mont Blanc Motorway
Erection design.
The deck was divided into coupled beams (BiPoutres), pre-assembled in the workshop, which were then transported to an area close to the final site, assembled and placed in geometry on temporary supports. By means of trolleys, the BiPoutres were moved to the foot of the work, to then be lifted and positioned in their final configuration by cranes. Particular attention was paid to checking the stability during the lifting, laying and casting of the deck.
The deck was divided into coupled beams (BiPoutres), pre-assembled in the workshop, which were then transported to an area close to the final site, assembled and placed in geometry on temporary supports. By means of trolleys, the BiPoutres were moved to the foot of the work, to then be lifted and positioned in their final configuration by cranes. Particular attention was paid to checking the stability during the lifting, laying and casting of the deck.
To ensure the rotations of the deck during the casting phase, it was necessary to provide provisional supports to be replaced when the casting is hardened with the definitive supports. Interference with the highway has been reduced to a minimum: the assembly operations were completed in just two nighttime interruptions granted by the highway manager.
To ensure the rotations of the deck during the casting phase, it was necessary to provide provisional supports to be replaced when the casting is hardened with the definitive supports. Interference with the highway has been reduced to a minimum: the assembly operations were completed in just two nighttime interruptions granted by the highway manager.