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Volume 52 Issue 12
Dec.  2022
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YU Haiyang, HU Ju, ZHANG Guiyan, HUANG Yujun, ZHU Guofei, CUI Hongzhi, BAO Xiaohua. Research on Seismic Responses of Underground Structures Considering Influence of Contact Surfaces[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(12): 156-165. doi: 10.13204/j.gyjzG21090402
Citation: YU Haiyang, HU Ju, ZHANG Guiyan, HUANG Yujun, ZHU Guofei, CUI Hongzhi, BAO Xiaohua. Research on Seismic Responses of Underground Structures Considering Influence of Contact Surfaces[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(12): 156-165. doi: 10.13204/j.gyjzG21090402

Research on Seismic Responses of Underground Structures Considering Influence of Contact Surfaces

doi: 10.13204/j.gyjzG21090402
  • Received Date: 2021-09-04
    Available Online: 2023-03-22
  • A water-soil coupling finite element analysis for the dynamic response of underground structure in the liquefiable site during and after earthquakes was performed. In the calculation, the water-soil fully coupled finite element-finite difference method based on the effective stress theory and the CM model (the Cyclic Mobility model) accurately reflected the dynamic characterisitcs of soil under cyclic loads were adopted. Considering the structural volume effect, the hybrid elements composed of elastic beams and columns were used to construct the model of the station structure, and the joint elements at soil-structure interfaces were set. The acceleration response of soil during a rare earthquake, the development of excess pore water pressure, the internal force of the underground structure and the consolidation settlement after the earthquake were simulated and analyzed. The results showed that the underground structure continued to float up after the earthquake, and the displacement development after the earthquake was significantly greater than that during the earthquake. When the excess pore pressure almost completely dissipated, the structure settlement tended to be stable.
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