Nantes Island University Hospital

The acoustic firm Tisseyre + Associés has developed a joint working methodology with the architect, which is particularly relevant in the context of projects to create new districts such as the CHU de l'Ile de Nantes. Indeed, our 4D digital modeling tool for soundscapes 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.

Complete acoustic mission

The Ile de Nantes University Hospital is truly an urban creation project. Many road, tram and air transport routes (for the helicopter) have been created. We have therefore carried out, thanks to BIMAE®, the studies of the impacts of these creations of roads on urban planning in the future state of completion to anticipate, optimize and integrate the acoustic solutions within the architecture of the project.
In addition, the BIMAE® has served us to participate in the reflection on the allocation of buildings within this urban planning. Indeed, the sound environment in which certain human activities had to take place risked making them unsuitable for use. Thus, we have co-managed the establishment of emergencies and sized their acoustic over-insulation. In addition, some terraces have been set back opposite the boulevard to make them usable.

Tailor-made acoustic solutions for natural ventilation

During the design of the Nantes University Hospital, natural ventilation solutions were given priority. This “open window” solution makes it possible to limit heat islands and the risk of infection with nosocomial diseases. However, for such a solution to be exploitable in use, it is necessary to be able to predict the sound levels to which these windows will be exposed during operation. Thanks to the BIMAE®, via the joint study of the internal and external functions of the project and the 3D visualization of the sound propagation at the foot, in the facade and around the building, we were able to size tailor-made solutions according to the exposure to noises in different configurations (the rooms between them within the interior courtyards, the passage of the tram, the technical equipment).

Sound impact of technical equipment on untreated patios

Sound impact of technical equipment on patios with protective screen

Sound impact of occupied rooms between them without treatment

Sound impact of occupied rooms between them with sound-absorbing facades