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RESEARCH ON DYNAMIC RESPONSE LAWS OF LINING STRUCTURE OF TUNNELS BASED ON WAVELET ANALYSIS
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Abstract A method of wavelet analysis with the dynamic FEM of lining structure of tunnels and a viscoelastic boundary condition are expounded. The spring-damper element is adopted to simulate the viscoelastic boundary condition. And then，a corresponding FEM model is established. Based on the results of in-situ vibration measurement，the dynamic properties of Zhuting Tunnel on the Beijing—Guangzhou Line are analyzed under the vibrating loadings of the speed-up train. The time-response laws of vibration displacements，accelerations，bending moments，axial forces and shear forces of characteristic spots on the lining structure，are obtained. Comparing the calculation results with the in-situ data shows that the proposed method is reasonable. The results are significant for the analysis of structure stability of tunnel with speed-up trains passing through.
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Received: 20 February 2004
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CHEN Weizhong1*, LIU Xinyu1, 2, YANG Jianping1, WANG Wei1, 2, ZANG Zhonghai3, DING Hongyuan3, ZHANG Zheyuan3, WANG Xiaogang3, SHI Zhengrong1. Development of a large-scale 3D physical model test system for underground energy storage caverns and its model experimental study[J]. , 2026, 45(6): 1615-1628. |
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