Numerical analyses of vertical bearing capacity of foundations with enlarged pile group

WANG Cheng-hua; AN Jian-guo

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Numerical analyses of vertical bearing capacity of foundations with enlarged pile group

更新时间：2026-06-25

- Numerical analyses of vertical bearing capacity of foundations with enlarged pile group
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  天津大学建筑工程学院,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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WANG Cheng-hua, AN Jian-guo. Numerical analyses of vertical bearing capacity of foundations with enlarged pile group[J]. 2011, 32(S2).
DOI：

WANG Cheng-hua, AN Jian-guo. Numerical analyses of vertical bearing capacity of foundations with enlarged pile group[J]. 2011, 32(S2). DOI：

摘要

为探讨扩径缺陷桩对竖向荷载作用下群桩基础工作性状的影响，建立了一个群桩基础数值分析模型。采用三维非线性有限元/无限元方法对正常桩基础及含有浅部或深部扩径缺陷桩的群桩基础进行了一系列对比分析。分析结果初步揭示了竖向荷载作用下含扩径缺陷桩的桩基础基本工作特性，得出了扩径缺陷对群桩各桩间轴力分布及承台弯矩分布影响的基本规律性。研究成果不仅有助于认识和合理判断扩径桩的工作机制，而且对评价有扩径缺陷的桩基承载性状、选择缺陷处理技术及桩与承台的结构设计都具有重要的实际意义

Abstract

In order to investigate the influence of the defective piles with stem enlargement on the working behavior of pile foundations under vertical loadings

a numerical model was set up for the analysis of group piled foundations. A series of contrastive analyses were made to a group piled foundation including a pile with defect of stem enlargement in a shallow or a deeper depth and a pile foundation with normal piles with a three dimensional nonlinear finite-infinite element method. The basic working behavior of the pile foundation with a defective pile of stem enlargement was initially revealed by the results of the analyses; and the basic rules of the affects of pile stem enlargement defects on the distribution of axial forces among piles and the bending moments in pile caps were obtained. The results of this research are not only helpful for the understanding and rational judgment of the working mechanism

but also of practical important significance in the assessment of the bearing behavior of pile foundations including defective piles with stem enlargements and in the structural designs of piles and pile caps.

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