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Volume 41 Issue S1
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ZHU Tong, WANG Rui, ZHANG Jian-min. Seismic response analysis of shield tunnels in liquefiable soils[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 57-60. DOI: 10.11779/CJGE2019S1015
Citation: ZHU Tong, WANG Rui, ZHANG Jian-min. Seismic response analysis of shield tunnels in liquefiable soils[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S1): 57-60. DOI: 10.11779/CJGE2019S1015
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Seismic response analysis of shield tunnels in liquefiable soils

  • 1. Skate Key Laboratory of Hydroscience & Engineering, Tsinghua University, Beijing 100084, China;
    2. Institute of Geotechnical Engineering, Tsinghua University, Beijing 100084, China

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  • Received Date: April 28, 2019
  • Published Date: July 14, 2019
    Graphical Abstract
    • Abstract
  • The prefabricated lining segments of shield tunnels are their most significant structural feature. The current researches on the seismic response of shield tunnels mainly adopt simplified methods, lack of dynamic response analysis, which can reflect the characteristics of tunnel segments and joints effectively. Further researches are needed to understand the seismic response of shield tunnels in liquefiable soils. A computational model for prefabricated tunnel linings is proposed in FEM program. A unified constitutive model for large post-liquefaction deformation of sand is used for liquefiable ground. The analysis results show that the joint is a key aspect of the seismic design of shield tunneling. The fabricated tunnel segment structure is more flexible than the monolithic structure under seismic loading. The tunnel is horizontally compressed in liquefiable soil, and the seismic response is distantly different from that in the non-liquefiable soils.
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    • References (8)
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