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A Deterministic Method for Evaluating Safety Factor of Deep Excavation Stability against Groundwater Inrush Equivalently Considering Soil Uncertainty

Author

Listed:
  • Lihua Pei

    (China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)

  • Sheng Zhang

    (School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Youbin Yang

    (China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)

  • Dong Lin

    (China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China)

Abstract

In current design specifications for deep excavation, the determination of safety factors against groundwater inrush only considers the self-weight effect of soil mass at the bottom. However, the shear strength and its spatial variability in a cement-solidified bottom layer also plays an important role in safety factor estimation. Based on that, in this study, the strength reduction method was introduced into reliability analysis of deep excavation engineering, and the influence of shear strength and its spatial variability of cement-solidified soil on the stability of deep excavation is studied. Furthermore, a deterministic analysis method that can equivalently consider soil uncertainty is proposed and verified.

Suggested Citation

  • Lihua Pei & Sheng Zhang & Youbin Yang & Dong Lin, 2022. "A Deterministic Method for Evaluating Safety Factor of Deep Excavation Stability against Groundwater Inrush Equivalently Considering Soil Uncertainty," Sustainability, MDPI, vol. 15(1), pages 1-14, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2022:i:1:p:748-:d:1021550
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