Interaction of Segmental Tunnel Linings and Dip-Slip Faults—Tabriz Subway Tunnels

In some subsurface urban development projects, bedrock faults intersecting with the tunnel path are inevitable. Due to high costs of it is necessary study behavior such concrete structures under fault movement risks. Using an advanced 3D numerical finite difference code and a plastic hardening constitutive model for soil, this paper examined performance straight oblique segmented Tabriz Subway Line 2 large deformations. The passes through reverse called Baghmisheh Fault. fault–tunnel simulations were validated by centrifuge tests on segmental normal faulting. validation models, there was maximum 15%. According results faulting, outperform no-joint linings when comes movement. During movement, line segments did not collapse but showed slight However, continuous collapsed i.e., structural forces created exceeded section strength capacity. Among structures, lining joints better against faulting than joints. For should be used in areas.