3D finite element analysis of bending characteristics of passive row piles

TU Yu-min; YU Ya-nan

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3D finite element analysis of bending characteristics of passive row piles

更新时间：2026-06-25

- 3D finite element analysis of bending characteristics of passive row piles
- Vol. 29, Issue 2, (2008)
- 作者机构：
  
  浙江大学土木工程学系,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
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TU Yu-min, YU Ya-nan. 3D finite element analysis of bending characteristics of passive row piles[J]. 2008, 29(2).
DOI：

TU Yu-min, YU Ya-nan. 3D finite element analysis of bending characteristics of passive row piles[J]. 2008, 29(2). DOI：

摘要

利用三维非线性弹性有限元方法，研究了承受邻近地面超载作用时被动排桩的弯曲性状，也研究了排桩间距变化、地基软弱下卧层以及超载与排桩之间的距离对桩身弯曲性状的影响，揭示了邻近超载作用下被动排桩桩身弯矩和挠度的变化规律。研究表明，在邻近超载作用下桩身最大正弯矩出现在0.55倍桩长处，桩顶部也产生较大的负弯矩，随着超载的增大，负弯矩由增大变为减小，桩身正弯矩增大，当超载超过一定值时，桩身正弯矩加速增长；桩身的弯矩随着桩距的增大而增大；当地基中存在软弱下卧层时，桩身的负弯矩减小，而正弯矩明显增大。

Abstract

Three-dimensional nonlinear elastic finite element method had been developed to study the bending behavior of the passive row piles subjected to surcharge nearby. The influence of the space between the row piles

foundation soft sublayer and the distance between surcharge and row piles on the bending behavior of the passive row piles was studied. The variety law of the bending moment and deflection was posted. Study showed that the positive bending moment of piles was 0.55 times pile-length in the vicinity of surcharge. There was biggish negative bending moment in the top of the piles. The negative bending moment varied from increasing to decreasing as surcharge increased. While surcharge increased to a certain value

the positive bending moment accelerated. The moment increased as the space of row piles. While there was soft sublayer in the ground

the negative moment decreased

moreover

the positive moment increased distinctly.

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