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Volume 47 Issue 2
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ZHAO Futang, WU Qixin, ZHENG Junjie, ZHENG Yewei. Generalized shear strain-based model for development of excess pore water pressure in saturated sand under anisotropic consolidation[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(2): 315-323. DOI: 10.11779/CJGE20231122
Citation: ZHAO Futang, WU Qixin, ZHENG Junjie, ZHENG Yewei. Generalized shear strain-based model for development of excess pore water pressure in saturated sand under anisotropic consolidation[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(2): 315-323. DOI: 10.11779/CJGE20231122
shu

Generalized shear strain-based model for development of excess pore water pressure in saturated sand under anisotropic consolidation

  • School of Civil Engineering, Wuhan University, Wuhan 430072, China

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  • Received Date: November 16, 2023
  • Available Online: May 12, 2024
    Graphical Abstract
    • Abstract
  • The development pattern of the excess pore water pressure in saturated sand under anisotropic consolidation conditions is crucial for understanding the liquefaction behavior of sand. In this study, a series of torsional shear tests are conducted using the hollow-cylinder torsional apparatus to examine the influences of the initial consolidation conditions (initial mean effective stress p'0 and consolidation stress ratio K) and cyclic loading conditions (cyclic stress ratio, CSR) on the development patterns of the generalized shear strain (γg) and excess pore water pressure ratio (ru) in saturated sand. The experimental results indicate that the sands under anisotropic consolidation exhibit three failure modes: cyclic mobility, cyclic liquefaction and residual cumulative deformation. The normalized ru can be correlated with γg for all the three failure modes. A prediction model for the excess pore pressure is proposed considering the anisotropic consolidation conditions for saturated sand. The model can reasonably predict the development of pore water pressure under different consolidation stress states.
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    • References (23)
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