Base stability of braced excavations in soft clays using FEM

CHEN Fu-quan; Lü Yan-ping; LIU Yu-chuan

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Base stability of braced excavations in soft clays using FEM

更新时间：2026-06-25

- Base stability of braced excavations in soft clays using FEM
- Vol. 29, Issue 2, (2008)
- 作者机构：
  
  福州大学土木工程学院,福州,350002
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473.2
- Online First：10 July 2013，
  
  Published：2008
- 稿件说明：
移动端阅览
CHEN Fu-quan, Lü Yan-ping, LIU Yu-chuan. Base stability of braced excavations in soft clays using FEM[J]. 2008, 29(2).
DOI：

CHEN Fu-quan, Lü Yan-ping, LIU Yu-chuan. Base stability of braced excavations in soft clays using FEM[J]. 2008, 29(2). DOI：

摘要

采用强度折减法有限元方法（SSRFEM），分析了不排水条件下软土地基中内撑式排桩支护基坑开挖的抗隆起稳定性，并研究了软土不排水抗剪强度、支护结构条件、基坑尺寸对基底抗隆起的影响。研究表明，以往通常采用的极限平衡公式，对基坑开挖基底抗隆起稳定分析不能完全考虑支护结构的影响，也不能考虑基坑侧壁位移的影响，在一些条件下误差较大，而SSRFEM分析方法是求解基坑极限状态实际而自然的破坏形式，可很好地分析基底隆起稳定性。

Abstract

Finite element method with reduced shear strength (SSRFEM) was used to evaluated the base stability of excavations in soft clays under the undrained condition. The influence of clay undrained shear strength

conditions of pit bracing system and pit dimensions on base upheave stability of excavations were studied detailedly. The results from several limit equilibrium analysis methods for evaluating base stability of excavations were compared with the results from FEM. It shows SSRFEM is a reliable and robust method for assessing the safety factor of the base stability of excavations and limit equilibrium analysis methods only can be used on some conditions.

关键词

Keywords

references

Views

1865

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical analysis of effect of excavation on underlying existing metro tunnel and deformation control

Analysis of working performance of piles beneath excavation bottom and settlement calculation

Investigation on distribution of negative friction of frictional piles in large filling sites

Stability analysis of three-dimensional bridge abutment slope based on strength reduction method for inhomogeneous slope

2D finite element analyses of effects of plastic dilatancy gradient on T-H-M coupling in porous rock mass

Related Author

ZHENG Gang

LIU Qing-chen

DENG Xu

ZHENG Gang ZHANG Li-ming DIAO Yu

YE Guan-bao

ZHENG Wen-qiang

ZHANG Zhen

HU Song-shan

Related Institution

Key Laboratory of Coast Civil Structure and Safety, Ministry of Education, Tianjin University

School of Civil Engineering, Tianjin University

Department of Civil Engineering, Tianjin University

MOE Key Laboratory of Coast Civil Structures and Safety, Tianjin University

Department of Geotechnical Engineering, Tongji University

AI问答

⁰