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Volume 37 Issue 1
Feb 2023
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Chinese Journal of High Pressure Physics  > 2023  >  37(1): 015302.
NING Maoquan, TANG Zaixing, LIU Shunshui, MA Jianfei, CUI Guangyao. Ultimate Support Force of Excavation Face of Super-Large Rectangular Shield Tunnel Crossing High-Speed Railway in Composite Stratum[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015302. doi: 10.11858/gywlxb.20220621
Citation: NING Maoquan, TANG Zaixing, LIU Shunshui, MA Jianfei, CUI Guangyao. Ultimate Support Force of Excavation Face of Super-Large Rectangular Shield Tunnel Crossing High-Speed Railway in Composite Stratum[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015302. doi: 10.11858/gywlxb.20220621
shu

Ultimate Support Force of Excavation Face of Super-Large Rectangular Shield Tunnel Crossing High-Speed Railway in Composite Stratum

doi: 10.11858/gywlxb.20220621
  • 1.

    China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430064, Hubei, China

  • 2.

    Haixia Traffic Engineering Design Co., Ltd., Fuzhou 350004, Fujian, China

  • 3.

    School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

  • 4.

    School of Civil Engineering, North China University of Technology, Beijing 100144, China

  • Received Date: 30 Jun 2022
  • Rev Recd Date: 18 Jul 2022
  • Accepted Date: 24 Dec 2022
    • Available Online: 21 Feb 2023
  • Issue Publish Date: 05 Feb 2023
    Abstract
  • To ensure the face stability of the super-large rectangular shield tunnel, based on a super-large rectangular shield tunnel, the theoretical analysis, numerical simulation and field monitoring are used to study the ultimate support force of the super-large rectangular shield tunnel crossing the high-speed railway in the composite stratum. The critical failure mode of excavation surface of super-large rectangular shield tunnel crossing high-speed railway in a composite stratum is proposed, and the calculation method of ultimate support force is deduced based on the ultimate equilibrium theory. The results of numerical simulation and field monitoring show that the errors between the proposed ultimate support force calculation method and numerical simulation as well as the proposed ultimate support force calculation method and field monitoring are 10.40%–18.30% and 11.19%–16.85%, respectively. The formula of ultimate support force is safe and reliable, and can be applied to practical engineering. The research conclusion can provide a reference for the stability control of excavation face in similar projects.

     

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