Comparative Seismic Analysis of Shield Tunnel Using Equivalent Beam Element Method and 3D Simulation
This article adopt equivalent beam element to simulate the characteristics of the shield tunnel, established longitudinal equivalent continuous model of the shield tunnel. The shield tunnel is modeled as a uniform beam supported on the viscoelastic foundation of Winkler type. The interaction between soil and structure can be evaluated by the contact surface, which is simulated by the nonlinear spring and damper. The equivalent finite element method is used for the calculation of above model. This method is performed for the shield tunnel across Yangtze River, in order to examine the characteristics of longitudinal seismic response of shield tunnels. This model takes nonlinear behaviors of soil and contact interface between soil and tunnel into account,and the contact interfaces between lining segments are also considered. The spacing distribution of displacement, stress and time history series are obtained. Both the stress in lining segments and axial force in connecting bolts are compared with that by other 3D simulation method on complex solid model.
Kai LIU Boming ZHAO
School of Civil Engineering ,Beijing Jiaotong University ,Beijing 100044,China China Railway Eryuan School of Civil Engineering ,Beijing Jiaotong University ,Beijing 100044,China
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
265-271
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）