Damage Mechanism and Protective Measure for Metro Tunnels Under Sequential Normal Fault Movements
Subway tunnels are an important component of urban transportation systems.When constructing tunnels in areas with dense active faults,it is often difficult to avoid crossing these faults.Seismic fault movements can have a significant impact on tunnels crossing fault zones.In order to study the structural failure mechanisms,protective measures,and their effectiveness for the cut-and-cover rectangular tunnels between Jinyang Road Station and Xiaojingyu Station on Taiyuan Metro Line 1 under the sequential movement of multiple normal faults in the Jiaocheng fault zone,a numerical model of the interaction between the strata and the tunnel was established using finite element analysis software.A comparative analysis was conducted on the internal forces and damage distribution within the tunnel under sequential fault movements and individual fault movements,defining the range of tunnel influence due to fault movements.The research findings provide reference for the anti-movement design and construction of cut-and-cover subway tunnels crossing active faults.
NETL
NSTL
万方数据
维普
