Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile

ZENG You-jin; ZHANG Wei-min; WANG Nian-xiang; XU Guang-ming

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Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile

更新时间：2026-06-25

- Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile
- Vol. 24, Issue 5, (2003)
- 作者机构：
  
  南京水利科学研究院土工研究所,江苏,南京,210024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：19 August 2014，
  
  Published：2003
- 稿件说明：
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ZENG You-jin, ZHANG Wei-min, WANG Nian-xiang, et al. Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile[J]. 2003, 24(5).
DOI：

ZENG You-jin, ZHANG Wei-min, WANG Nian-xiang, et al. Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile[J]. 2003, 24(5). DOI：

摘要

在提出的基桩有效桩长定义基础上，提出了桩的割线刚度控制法来确定有效桩长，并采用线弹塑性荷载传递函数，将其应用于确定深厚覆盖土层中普通桩有效桩长。分析了桩土刚度比K，桩径D，桩顶沉降量So，桩侧土极限位移Um，桩端土弹性模量与桩周土弹性模量比值Ko及土层泊松比μ对普通桩有效桩长的影响，其结果表明，除Ko和μ外，其余均有一定或较大地影响。为了将理论分析应用到工程桩中，对参数的取值进行了分析。

Abstract

The control method of secant rigidity of pile is put forward in order to determine effective length of pile based on the definition of effective length of foundation pile brought forward. It is applied to determine effective length of a common pile in deep overlay soil layers with linearly elastoplastic load transfer function. Influential factors of effective length such as coefficient of rigidity of pile

pile’s diameter

top settlement of pile

side ultimate displacement

elastic modulus ratio of the bottom soil and surrounding soil and Poisson’s ratio

are thoroughly analyzed. The results show that the factors have certain effects on effective length of the common pile except elastic modulus ratio of the bottom soil and surrounding soil

and Poisson’s ratio. In order to apply to practical project

it is studied how to confirm parameters in the project.

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