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Volume 36 Issue zk2
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ZHOU Yong, ZHANG Lei. Sensitivity analysis of design parameters of soil-nailing and prestressed anchor structure for deep excavations[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 106-112. DOI: 10.11779/CJGE2014S2018
Citation: ZHOU Yong, ZHANG Lei. Sensitivity analysis of design parameters of soil-nailing and prestressed anchor structure for deep excavations[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 106-112. DOI: 10.11779/CJGE2014S2018
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Sensitivity analysis of design parameters of soil-nailing and prestressed anchor structure for deep excavations

  • 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

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  • Received Date: July 27, 2014
  • Published Date: July 27, 2014
    Graphical Abstract
    • Abstract
  • At present, in the design of deep excavations, with the surrounding soils and conditions permitted, the compound soil-nailing wall supporting form of soil-nailing and prestressed anchor is adopted, which has the advantages of low price and rapid speed for construction, compared to the pile anchor supporting form, so it is widely used in the engineering practice. However, the calculated results of the existing projects empirically designed are relatively conservative owing to the complicated mechanism of action between soil nailing and prestressed anchor. The safety factor of internal global stability is adopted as the objective function, and the global finite-difference method is empbyed to establish the model of sensitivity analysis based on the circular ship slice method. This work will provide important and optimal design basis and even some theoretical basis for the compound soil-nailing wall supporting structure of soil-nailing and prestressed anchor in deep excavation projects.
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    • References (13)
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