Study of computation methods of ultimate uplift capacity and determining position of failure surface of uplift piles in layered soil

HE Si-ming; ZHANG Xiao-xi; WANG Dong-po

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Study of computation methods of ultimate uplift capacity and determining position of failure surface of uplift piles in layered soil

更新时间：2026-06-25

- Study of computation methods of ultimate uplift capacity and determining position of failure surface of uplift piles in layered soil
- Vol. 33, Issue 5, (2012)
- 作者机构：
  
  1. 中国科学院山地灾害与地表过程重点实验室,成都,610041
  2. 中国科学院水利部成都山地灾害与环境研究所,成都,610041
  3. 西南交通大学土木工程学院,成都,610031
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU470
- Online First：14 May 2012，
  
  Published：2012
- 稿件说明：
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HE Si-ming, ZHANG Xiao-xi, WANG Dong-po. Study of computation methods of ultimate uplift capacity and determining position of failure surface of uplift piles in layered soil[J]. 2012, 33(5).
DOI：

HE Si-ming, ZHANG Xiao-xi, WANG Dong-po. Study of computation methods of ultimate uplift capacity and determining position of failure surface of uplift piles in layered soil[J]. 2012, 33(5). DOI：

摘要

应用水平条分法与极限平衡原理讨论了抗拔桩在分层地基中的极限承载力、破裂面、土体性质的关系。将破裂面看成是由若干段组合而成的复合破裂面，并沿各段将边坡水平条分为多块体。在假设边坡岩土体服从摩尔-库仑屈服准则条件下，根据极限平衡原理，建立抗拔桩极限承载力的多元函数，利用数学优化方法给出其最优解，从而可以方便地给出抗拔桩破裂面及对应的极限抗拔力。通过算例分析并与前人研究成果比较，其结果表明：该理论方法是合理有效的，可以用于预测抗拔桩地基承载力极其破裂面形状。

Abstract

The horizontal slice method is used to study the relation among the uplift capacity

the failure surface and soil parameters with Mohr-Coulomb failure criterion. According to the limit equilibrium approach

the uplift capacity is calculated by dividing soil around the pile into slices with regarding the potential failure surface as a group of several sectional planes. Then the multivariate function used to calculate uplift capacity is established and optimized by the sequential quadratic programming. Through the numerical calculation and comparison with the previous research

the results show that the method is reasonable and effective

and can be used to determine the failure surface shape and the magnitude of the uplift capacity of uplift piles.

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