Eco-quartier Ginko C2

This relatively standard project (apart from the size – 22 blocks, 12 of which are on a common base) is subject to numerous technical constraints.

 

Christophe Faurie

Vinci

Bordeaux, France

This relatively standard project (apart from the size – 22 blocks, 12 of which are on a common base) is subject to numerous technical constraints.
– The modelling of the floors and walls, taking into account the hydrostatic and support pressures for 3 basement levels.
– The desire of the project management team not to have a JD in the infrastructure in order to control water inflow. We therefore studied an infrastructure base without a DB of 190m in length and 90m in width, taking into account the phenomena of shrinkage and thermal expansion due to car park ventilation.
– As the buildings are subject to seismic regulations, we carried out a seismic modelling of 12 building blocks on a common infrastructure base, using the same model.
– Taking into account the stiffness of the piles and the stiffness of the soil against the moulded walls to obtain the most realistic seismic behaviour.
– The commercial thermal breakers at the edge of the floor were replaced by insulating concrete strips to break the thermal bridges.
– The project includes concrete and steel structures which are studied in a global model.

User benefits:

  • With Advance Design, we were able to study and justify all the technical issues of the project.
  • The creation of a model with a behaviour close to reality is possible with many functionalities, such as the creation of materials, the type of adapted links (relaxations, fixed supports, elastic, stops, imposed displacement).
  • But it also allowed us to be efficient in time, by allowing the simultaneous realization of the blocks and a global assembly of the models afterwards.
  • The calculation by phase allows us to simulate different phases simultaneously and to exploit the combined results.
  • The analysis of the “mushroom” floors is carried out directly in the software by setting the desired dimensioning criteria.
  • The direct connections with the reinforcement modules are an advantage in the analysis and exploitation of the model, especially for the bracing walls with all the integrated seismic forces.
  • Computational power was also a point of concern in relation to the size of the model, but it turned out that it was the performance of the computers that was being tested, not the software.