Model test of rectangular pile penetration effect in transparent soil

ZHOU Hang; YUAN Jing-rong; LIU Han-long; CHU Jian

doi:10.16285/j.rsm.2018.0714

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Model test of rectangular pile penetration effect in transparent soil

更新时间：2026-06-25

- Model test of rectangular pile penetration effect in transparent soil
- Vol. 40, Issue 11, Pages: 4429-4438(2019)
- 作者机构：
  
  1. 重庆大学土木工程学院,重庆,400450
  2. 重庆大学山地城镇建设与新技术教育部重点实验室,重庆,400450
  3. 南洋理工大学土木与环境工程学院,新加坡,639798
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.0714
  CLC： TU473
- Online First：01 December 2019，
  
  Published：2019
- 稿件说明：
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ZHOU Hang, YUAN Jing-rong, LIU Han-long, et al. Model test of rectangular pile penetration effect in transparent soil[J]. 2019, 40(11): 4429-4438.
DOI：

ZHOU Hang, YUAN Jing-rong, LIU Han-long, et al. Model test of rectangular pile penetration effect in transparent soil[J]. 2019, 40(11): 4429-4438. DOI： 10.16285/j.rsm.2018.0714.

摘要

矩形桩沉桩挤土效应与传统圆形截面桩不同，传统的理论模型和试验技术不适用于研究矩形截面桩沉桩挤土效应。基于透明土变形可视化技术，研究了矩形截面桩沉桩挤土的位移场变化规律。试验结果表明，矩形桩沉桩后，桩周可以分为两块区域：靠近矩形桩身的过渡区域，在此区域内挤土位移模式呈现非柱对称特征，过渡区半径约为4deq～5deq，远离桩身的圆孔扩张区域，该区域内挤土位移呈现柱对称特征。根据矩形截面桩的沉桩挤土试验，推导出了矩形桩截面的修正扩孔理论，并将理论计算的位移值与模型试验测量值进行对比，验证修正扩孔理论的合理性。

Abstract

The penetration effect of the rectangular pile is different from the conventional circular cross-section pile. However

conventional theoretical models and experimental techniques are not suitable for investigating the rectangular cross-section pile. Based on deformation visualization technique of transparent soil

this paper investigated the displacement field variation law induced by the rectangular pile. Experimental results show that after driving of rectangular pile

the soil displacement of the surrounding soil after installing a rectangular pile can be divided into two typical areas. A transition area is produced around the rectangular pile

where soil displacement is non-columnar symmetry characteristics

and its radius is around 4deq-5deq. The expansion area of the circular hole is located away from the pile

and its displacement presents the characteristics of cylindrical symmetry. According to pile driving compaction tests of the rectangular cross-section pile

this study proposed a modified cavity expansion mode for rectangular pile and verified the rationality of the modified model by comparing theoretical values with experimental data.

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