Lot 18 – Anfa City

The acoustic firm Tisseyre + Associés has developed a joint working methodology with the architect, particularly relevant in the context of mixed projects such as this housing and office complex. Indeed, our 4D digital soundscape modeling tool in the future state of completion, the BIMAE®, is an essential work support for close collaboration with architects and urban planners at all stages of the project. By modeling the sound evolution during a day of transport routes and human activities, our tool checks the acoustic balance between these different sound sources in order to avoid nuisance. In addition, the joint study of the internal and external functions of the projects and the 3D visualization of the sound propagation at the foot, in the facade and around a building makes it possible to anticipate, optimize and integrate the acoustic solutions within of the project architecture.

Environmental acoustic mission

The use of BIMAE® makes it possible to integrate acoustic solutions from the first phases of the project aimed at achieving a balance between noise from transport and noise from human activities. The acoustic modeling of future transport routes and the passage of the tram from the design phase has made it possible to integrate and optimize insulation solutions for facades and terraces adapted to the uses of each space.

General sound environment (Leq) of the daytime neighborhood (6 a.m. to 10 p.m.) from different points of view

Tram vibration solutions

To ensure the desert of this new business district, tram tracks are under construction. We were therefore tasked with finding solutions to the vibrations induced by the passages of the nearby tram. Usually, the classic technique consists in suspending the structures by spring boxes. Thanks to our R&D, we have developed unique technical solutions in vibration protection: structural impedance breaking (via a Predit research contract). The acoustic trenches serve as a buffer between the vibration emission zone and the receiver. This innovation not only reduces work time but also costs.