The Avenue de la Division Leclerc is located north of the La Défense district, enclosed by the CNIT and the Coupole building complex. It consists of an access ramp to the A14 motorway at the entrance / exit and two side lanes.
In this dense urban context, the Trinity project reinforces pedestrian links between neighbourhoods and an office offering with a capacity of 3,300 people. It includes a traffic lane roofing structure and a 31-storey tower rising above the resulting esplanade.
The design of the whole stems directly from the site’s constraints: restricted footprint, slab levels imposed by the connection to existing forecourts and compliance with road templates.
The roof piers are interposed between the traffic lanes and also act as supports for the tower; the tower reflects the layout of the underlying tracks, with a very elongated massing and posts that scrupulously follow the framework of the supports.
The structure reconciles several antagonistic constraints: providing large openings for the passage of vehicles while maintaining a sufficient rigidity for the comfort of the occupants of the tower; offering a structure that is both robust and as light as possible. Material savings are obtained by using high performance materials and extensive calculations.
Complete project management, including:
- Preliminary design studies: APS / APD for the tower and preliminary design for the roof
- The realization of the business consultation documents for the structure part
- Work monitoring and approval of implementation plans
- The entire tower structural plans are produced using a 3D model developed in Revit
Client: SCI Trinity Défense (Unibail Rodamco Westfield)
Project management Consortium: setec tpi, Cro & Co, Barbanel, AE75, Egyde
Duration: Studies: 2011-2014; Works: 2015 – 2019