Analysis of soil squeezing effect for spherical cavity expansion with inclined nonaxisymmetric displacement boundary

RAO Ping-ping; LI Jing-pei; LIU Ying

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Analysis of soil squeezing effect for spherical cavity expansion with inclined nonaxisymmetric displacement boundary

更新时间：2026-06-25

- Analysis of soil squeezing effect for spherical cavity expansion with inclined nonaxisymmetric displacement boundary
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
  2. 同济大学地下建筑与工程系,上海,200092
  3. 南昌工程学院土木与建筑工程学院,南昌,330099
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU753
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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RAO Ping-ping, LI Jing-pei, LIU Ying. Analysis of soil squeezing effect for spherical cavity expansion with inclined nonaxisymmetric displacement boundary[J]. 2011, 32(9).
DOI：

RAO Ping-ping, LI Jing-pei, LIU Ying. Analysis of soil squeezing effect for spherical cavity expansion with inclined nonaxisymmetric displacement boundary[J]. 2011, 32(9). DOI：

摘要

针对斜边非轴对称位移边界条件下的沉桩球孔扩张，将桩体贯入模拟为球孔扩张过程，在线弹性土体模型的基础上，通过对地表边界以及倾斜边界上应力修正的镜像法，改进现有直边非轴对称球孔扩张理论，得到了斜边非轴对称位移边界下的球孔扩张挤土位移解答，并分析边界倾角及球孔边界距离等因素的挤土位移规律。研究结果表明，边界倾角越小，倾斜边界对球孔挤土位移的影响也越小；球孔边界距离越大，其对挤土位移的影响反而越小。文中解答可为类似斜边工程挤土位移的控制及参数设置提供参考。

Abstract

Based on the mirror image method for the spherical cavity expansion with nonaxisymmetric displacement boundary

assuming that the soil as the linear elastic constitutive model

the soil compaction displacement field is obtained through the modifications of surface boundary stress and inclination boundary stress

the soil compaction displacement field could consider different boundary angles

different distances from spherical cavity position to the boundary

etc. The results indicate that the influence of boundary inclination angle on the soil compaction displacement would be gradually smaller with the reduce of inclination angle; and the larger distance from spherical cavity position to the boundary

has the smaller influence on the soil squeezing displacement. The results provide some reference for similar engineering design and parameter settings.

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Related Author

RAO Ping-ping

CUI Ji-fei

ZHAO Lin-xue

LIAO Zhi-jian.

ZHANG Chang-guang

LI Jing-pei

RAO Ping-ping

WANG Jing-jing

Related Institution

Department of Civil Engineering, University of Shanghai for Science and Technology

Shanghai Geological & Mineral Engineering Investigation Co., Ltd.

School of Civil Engineering, Chang'an University

Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University

Qingdao Technological University

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