Squeezing effects of jacked pile in layered soil

LU Qun; GONG Xiao-nan; CUI Wu-wen; WANG Jian-liang

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Squeezing effects of jacked pile in layered soil

更新时间：2026-06-25

- Squeezing effects of jacked pile in layered soil
- Vol. 29, Issue 11, (2008)
- 作者机构：
  
  1. 浙江大学土木工程学系,杭州,310027
  2. 天津城市建设学院,天津,300384
  3. 河北工业大学土建学院,天津,300132
  4. 绍兴地基基础测试技术研究所,浙江,绍兴,312030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473.1
- Online First：07 August 2013，
  
  Published：2008
- 稿件说明：
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LU Qun, GONG Xiao-nan, CUI Wu-wen, et al. Squeezing effects of jacked pile in layered soil[J]. 2008, 29(11).
DOI：

LU Qun, GONG Xiao-nan, CUI Wu-wen, et al. Squeezing effects of jacked pile in layered soil[J]. 2008, 29(11). DOI：

摘要

针对实际工程中成层土情况中静压桩存在的问题，在ANSYS平台上，应用位移贯入法对静力压桩的连续贯入的全过程进行有限元模拟，详细对比了在均质土和成层土中静力压桩产生的位移场和应力场。指出软硬土层交界处土体位移加大，土中挤压应力剧变，出现应力间断。实际工程中，挤压应力间断使已压入桩的侧向受力剧变，导致桩体易开裂、弯折。这里提出相应的解决方法。

Abstract

Aiming at the problems occurring in actual projects

using the displacement penetration method

the complete process of successive penetration of jacked pile is simulated with finite element method based on ANSYS. Displacements and stress field in homogeneous soil are compared with which in layered soil in detail. It is shown that the soil’s displacement increases; and radial compression stress changes rapidly and discontinues at the boundary of soft soil and hard soil; and piles driven before are prone to be broken there.The methods for prevention is put forward.

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