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<p>The lateral friction of piles in the composite foundation of a high-fill embankment cement-soil mixing pile is distributed in sections. In this study, the calculation model of the pile–soil stress ratio of the cored pile was established based on the nonlinear distribution of lateral friction along the depth direction. Next, the equilibrium differential equation of the equivalent element body of the mixing pile and soil around the pile was established. Based on the compression deformation coordination relationship among the core pile, soil–cement pile, soil around the pile, and cushion, the theoretical calculation formula of the stress ratio of the ‘composite pile–soil’ with a core pile under the nonlinear distribution mode of the pile lateral friction was derived, and the main influencing factors of the stress ratio were analyzed. The analysis results reveal that the pile–soil stress ratio increased gradually with the soil–cement pile length.</p>

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Calculation of the Pile-Soil Stress Ratio of a Composite Foundation with Core Pile Under High Fill Embankment

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • Zunqun Xiao,
  • Fuqi Wang,
  • Xianya Wang,
  • Yinlei Shi,
  • Guangheng Zuo

摘要

The lateral friction of piles in the composite foundation of a high-fill embankment cement-soil mixing pile is distributed in sections. In this study, the calculation model of the pile–soil stress ratio of the cored pile was established based on the nonlinear distribution of lateral friction along the depth direction. Next, the equilibrium differential equation of the equivalent element body of the mixing pile and soil around the pile was established. Based on the compression deformation coordination relationship among the core pile, soil–cement pile, soil around the pile, and cushion, the theoretical calculation formula of the stress ratio of the ‘composite pile–soil’ with a core pile under the nonlinear distribution mode of the pile lateral friction was derived, and the main influencing factors of the stress ratio were analyzed. The analysis results reveal that the pile–soil stress ratio increased gradually with the soil–cement pile length.