Analysis of soil heave due to pile-sinking with pre-drilling in soft clay

ZHOU Jian-wu; LOU Xiao-ming

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Analysis of soil heave due to pile-sinking with pre-drilling in soft clay

更新时间：2026-06-25

- Analysis of soil heave due to pile-sinking with pre-drilling in soft clay
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 同济大学地下建筑与工程系,上海,200092
  2. 同济大学岩土及地下工程教育部重点实验室,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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ZHOU Jian-wu, LOU Xiao-ming. Analysis of soil heave due to pile-sinking with pre-drilling in soft clay[J]. 2011, 32(9).
DOI：

ZHOU Jian-wu, LOU Xiao-ming. Analysis of soil heave due to pile-sinking with pre-drilling in soft clay[J]. 2011, 32(9). DOI：

摘要

基于考虑初始半径的圆孔扩张理论，并根据旁压试验临界深度的形成机制与沉桩挤土的相似性，求得沉桩土体隆起的分界面，并进一步推导了沉桩引致地表隆起的曲线方程，分析了预钻孔半径对土体隆起的影响规律。由于初始半径即为沉桩施工时较为常用的预钻孔半径，因此，推导的预估土体隆起的有关方程为通用公式，当初始半径取0时，可用于普通沉桩的土体隆起分析。实际计算表明，该公式计算结果略小于实测值，但比有限元模拟的结果更接近实测值。因而提出的沉桩导致土体隆起的预估公式是简洁而实用的

Abstract

Based on the theory of cylindrical cavity expansion which considers the influence of initial radius

and according to the similarity between the mechanism of the critical depth of pressuremeter test and the penetration effect of pile-sinking

the interface of soil heave of pile-sinking with pre-drilling is obtained; and then a simple formula to estimate the range and magnitude of soil heave is derived. The law of soil heave due to initial radius of pre-drilling is analyzed. The initial radius is just the pre-drilling one

so the formula is universal to estimate soil heave which derived in this paper. When initial radius is zero

the formula can be used to analyze general pile-sinking. It is demonstrated that the calculated soil heave is less than the measured value

but more close to it than the FEM result. So a simple and practical formula to estimate the range and magnitude of soil heave for the engineering is given

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