Foundations and underground special works

1400 – Lot 1 Line 16 – Paris (France)

Works:
Execution of special foundations within construction works of the "L16" underground line, as part of the "Grand Paris Express" project, Lot 1.

Customer:
Société du Grand Paris

Contractor:
Eiffage GC

Period of Execution:
May 2018 - in progress

Works Amount:
€ 85.021.000 (I.CO.P. quote: 50%)

Description

The purpose of works is the execution of a part of the special foundations of the new Line 16 of the Paris metro, lot 1.
The works mainly consist in:
– deep diaphragms down to about 60 m having different thicknesses (800, 1.000, 1.200 and 1.500 mm) with installation of a water-stop joint between the elements;
– injections in the TBM launch/exit shafts, injections for the construction of the tunnels connecting the shafts and the main tunnel and injections prior to the excavation of diaphragms;
– bi-fluid jet-grouting in TBM launch/exit shafts and at the entrance/exit of connection tunnels.