Dynamic response analysis of lining structure for shield tunnel under seismic loading

作者：Wang, Yixian; Shan, Shengbiao; Ren, Weixin; Jing, Hongwen; Cao, Ping

来源：China Civil Engineering Journal, 2016, 49: 150-156.

• Dynamic response analysis
• Internal force distributions
• Lateral displacements
• Maximum bending moments
• Performance deterioration
• Segment joint
• Seismic
• Seismic loadings

Shield tunnel as a tool with the effect of alleviating the pressure of ground traffic for big cities, its security is getting more and more attention. Considering the seismic damage may take place in shield tunnels of large cities, the change law of performance of segment in different segment joint model subjected to seismic load were analyzed by implementing a finite software to numerical simulation of the seismic process. According to the results, shield tunnel produces the larger lateral displacement under the lateral seismic action, and the curve trends of lateral displacement of segment with time are basically identical. The lateral displacement of segment increases with the decrease of the segment stiffness, and it is a lot smaller than the lateral displacement of ground. The internal force distribution of segment and connecting bolt in different segment joint model are similar, the lateral and shear direction stress of segment decreases and the axial force, shear force and bending moment of connecting bolt increase with the decrease of the segment stiffness. Beside, the increase size of shear force of connecting bolt is maximum, and the maximum bending moment of connecting bolt locates in two hances of tunnel.

• 出版日期2016
• 单位中国矿业大学（北京）; 合肥工业大学