Dynamic Response Analysis of Lining Structure for Overlap Tunnel under Vibration Loads of Train

Regarding some overlap tunnel as background,3D model was established by the theory of FEM and a numerical method.The effects on lining structure due to the trains moving in opposite direction induced vibration which acts on the overlap tunnels are studied.The analysis shows that,the arch bottom was affected most by the vibration loads of train,and the structure could meet the requirement of safety.Besides,the static soil pressure is the key load for the tunnel structure design.