Seismic performance of tunnel lining

Seismic performance of tunnel lining of side-by-side and vertically stacked twin-tunnels

Abstract：The dynamic interaction between tunnel lining and its surrounding soil is a complicated issue as the magnitude of seismic wave from bedrock to the structure can be easily influenced by the geometrical layout and structural stiffness of the tunnel.A series of numerical analysis was conducted to study the dynamic response of the tunnel lining of side-by-side and vertically stacked double-tube tunnel since the inertia and kinematic interactions between the tunnel lining and the surrounding soil during an earthquake could induce excessive stresses to the lining itself due to the stiffness variation between the lining and the soil.Real earthquake ground acceleration was used as an input motion in the dynamic analysis.The interactive behavior of bending moment and axial forces,and the displacement of the tunnels were used to evaluate the effect of tunnel geometrical layout on the performance of the lining.It is found that the effect of earthquake on the axial thrust of the lining is insignificant,and there is a reduction of the bending moment in the lining due to the redistribution of the surrounding soil after the earthquake. 作者： Author： CHEN Shong-loong[1]  GUI Meen-wah[2] 作者单位： Department of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan, China;Department of Civil and Engineering Management, National Quemoy University, Kinmen, Taiwan, ChinaDepartment of Civil Engineering, National Taipei University of Technology, Taipei 10608, Taiwan, China 期 刊： 中南大学学报(英文版)   EISCI Journal： Journal of Central South University of Technology(English Edition) 年，卷(期)： 2011, 18(4) 分类号： U451 Keywords： underground excavation    tunnel lining design    seismic response    numerical analysis    机标分类号： U45 O32 机标关键词： tunnel lining    bending moment    dynamic interaction    ground acceleration    numerical analysis    dynamic response    seismic wave    interactions    axial thrust    performance    interactive    structure    forces    during    study    input    found 基金项目：

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