Tunnels and underground constructions
- Client: SOCIETE DU GRAND PARIS
- Project Management:GROUPEMENT SETEC/INGEROP
- Assignment: Concept studies in phases AVP and PRO
- Total cost of works: €868k (firm order)
- Completion date: 2013-2018
PROJECT DESCRIPTION AND CHARACTERISTICS
The study carried out by GEOS Ingénieurs Conseils constitutes a part of the project of construction of line 15 of the metro “Grand Paris Express”.
– Technical characteristics :
- The tunnel trajectory includes a tunnel Øi = 8.8 m of 4,000 m, dug with a cut-and-cover tunneling method, including three passages under the Seine,
- The works are a part of the geological context of the Senonian chalk,
- Construction of the entrance shaft of the cut-and-cover tunnel, Pont de Sèvres and Issy RER stations as well as the ancillary works.
ASSIGNMENT
As part of its participation, GEOS acts as a subcontractor of INGEROP.
GEOS participates in the project management of the civil engineering of the western section of lot 3 between Pont de Sèvres and Fort d’Issy / Vanves / Clamart.
GEOS conducted the Pre-Project and Project Studies.
These studies addressed, in particular, the following:
- Geotechnical design of stations
- Geotechnical design of the tunnel
- Interaction with existing structures.
