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Volume 36 Issue zk2
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WU Yi-qian, ZHU Yan-peng. Monitoring and numerical simulation of deformation law of deep foundation pit of subway station in Lanzhou collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 404-411. DOI: 10.11779/CJGE2014S2071
Citation: WU Yi-qian, ZHU Yan-peng. Monitoring and numerical simulation of deformation law of deep foundation pit of subway station in Lanzhou collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 404-411. DOI: 10.11779/CJGE2014S2071
shu

Monitoring and numerical simulation of deformation law of deep foundation pit of subway station in Lanzhou collapsible loess

  • 1. School of Civil Engineering,Lanzhou University of Technology, Lanzhou 730050, China;
    2. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou 730050, China;
    3. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou 730050, China.

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  • Received Date: July 27, 2014
  • Published Date: July 27, 2014
    Graphical Abstract
    • Abstract
  • Taking the deep foundation pit of Shijidadao Station of the first-stage project of Lanzhou subway line No. 1 as background, the deformation monitoring plan of its supporting structures is introduced. The monitoring items, instruments and frequencies are formulated. The in-situ monitoring is completed. According to the monitoring results, the characteristics of deformation of piles and the surrounding soils of supporting structures with time are analyzed. The results show that the design of supporting structures and the monitoring plan are reasonable. The supporting structures of bored piles and interior support can control the deformation efficiently and ensure a safe construction of the subway station. At the same time, the method of FLAC3D is used to study the whole excavation process of the foundation pit. The calculated results are consistent with the monitoring data. This study may provide reference for the reasonable design and safety construction of deep foundation pits of subway in Lanzhou.
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    • References (16)
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