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Volume 36 Issue zk2
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YANG Xiao-hui, ZHU Yan-peng, GUO Nan, HUANG Xue-feng. Optimization design and construction of large deep foundation pit groups in northwestern areas of China[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 165-173. DOI: 10.11779/CJGE2014S2028
Citation: YANG Xiao-hui, ZHU Yan-peng, GUO Nan, HUANG Xue-feng. Optimization design and construction of large deep foundation pit groups in northwestern areas of China[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 165-173. DOI: 10.11779/CJGE2014S2028
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Optimization design and construction of large deep foundation pit groups in northwestern areas of China

  • 1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;
    2. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China;
    3. Department of Architectural Engineering, Logistical Engineering University of PLA, Chongqing 401311, China

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  • Received Date: July 27, 2014
  • Published Date: July 27, 2014
    Graphical Abstract
    • Abstract
  • There are more and more deep foundation pits in the northwestern areas of China, while the available references about the optimization design and construction of foundation groups are short. The comprehensive renovation project of Xining Railway Station covers excavations such as multi-layer basement, underground shopping mall, underground garage, underground tunnel and subway transfer station of high-rise buildings during the development of the current cities. Based on the large foundation pit groups, considering their characteristics, development progress, schedule and cost, the design principles of supports for the foundation pit groups are determined. According to the specific differences around the block, the optimization design of typical cross section of the supports and the dewatering scheme are proposed. The rationality of this scheme is validated by construction monitoring. Finally, according to the experiments on internal forces and construction tracking, the key points to control the construction quality of deep foundation pit groups are analyzed. It may provide reference for the design and control of similar support projects in the northwestern areas of China.
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    • References (12)
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