Numerical prediction of long-term settlements over tunnels in clay

Dong-Mei Zhang (1) , Hong-Wei Huang (1) , Pierre-Yves Hicher (2)

1 Tongji University
2 GeM - Institut de Recherche en Génie Civil et Mécanique

The long-term settlements over tunnels can be rather significant, particularly when tunnels are embedded in soft and compressible soils. The long-term settlement can be predicted based on the stress-strain-time relationship of soft clay using multiple-step FEM. The influence of drainage condition of tunnel linings on the evolution of long-term surface settlement, as well as ground loss, are simulated with the multiple-step numerical procedure, and some conclusions are drawn from the numerical simulations. Finally, a case study is also performed and a satisfaction agreement between the predicted long-term settlement and the observed one is obtained.

Mots clés: Clay; Ground settlement; Loss and damage; Simulation; Soils; Tunnels

Domaines: Mécanique [physics.med-ph]; Matériaux

Dong-Mei Zhang, Hong-Wei Huang, Pierre-Yves Hicher. Numerical prediction of long-term settlements over tunnels in clay. Tunnelling and Underground Space Technology, 2004, 19 (4 5), pp.379-386. ⟨10.1016/j.tust.2004.02.009⟩. ⟨hal-01007126⟩