Comparative analysis of slope stability by strength reduction method

CHENG Can-yu; LUO Fu-rong; QI Cheng-zhi; WANG Ting

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Comparative analysis of slope stability by strength reduction method

更新时间：2026-06-25

- Comparative analysis of slope stability by strength reduction method
- Vol. 33, Issue 11, (2012)
- 作者机构：
  
  1. 北京建筑工程学院工程结构与新材料北京市高校工程研究中心,北京,100044
  2. 北京市轨道交通管理公司,北京,100037
- 作者简介：
- 基金信息：
- DOI：
  CLC： O245
- Online First：14 November 2012，
  
  Published：2012
- 稿件说明：
移动端阅览
CHENG Can-yu, LUO Fu-rong, QI Cheng-zhi, et al. Comparative analysis of slope stability by strength reduction method[J]. 2012, 33(11).
DOI：

CHENG Can-yu, LUO Fu-rong, QI Cheng-zhi, et al. Comparative analysis of slope stability by strength reduction method[J]. 2012, 33(11). DOI：

摘要

采用目前边坡稳定性分析比较流行的强度折减法，对比研究了MIDAS/GTS、FLAC、ANSYS配合Drucker-Prager（简称D-P）屈服准则和Mohr-Coulomb（简称M-C）屈服准则时软黏土、硬黏土、弱膨胀土3种工况下计算结果的偏差。软黏土工况下D-P准则和M-C准则计算结果的偏差相对较小，当边坡土体为硬黏土时，采用D-P准则与采用M-C准则计算结果的偏差明显增加。3种软件2种屈服准则下的计算结果都反映出，硬黏土的滑动面比弱膨胀土和软黏土的滑动面浅，而且同等情况下MIDAS计算得到的滑动面比ANSYS计算得到的滑动面浅；坡度较小时FLAC（M-C）计算的安全系数比MIDAS（M-C）计算得到的大，坡度较大时则相反；坡度较小时计算过程中先出现塑性区贯通，后出现计算不收敛；坡度较大时计算过程中先出现计算不收敛，后出现塑性区贯通。坡度较小时计算不收敛时的折减系数与出现塑性区贯通时的折减系数差别较大；坡度较大时这一差别较小，甚至计算到不收敛时塑性区仍未贯通，在用MIDAS计算时这一现象反映得更加明显。

Abstract

The strength reduction method

which is popular at present in the slope stability analysis

is used to analyze the relative error of calculation results by using software MIDAS/GTS

FLAC

ANSYS with D-P and M-C yield criteria in three cases (soft clay

hard clay

weak expansive soil). In the case of soft clay the relative error of calculation results by using D-P criterion and M-C criterion is relatively small. For hard clay slope

the relative error of calculation results by using D-P criterion and M-C criterion increases significantly. The calculation results by using three kinds of software with two yield criteria all indicate that sliding surface in hard clay is shallower than the sliding surface in weak expansive soil and soft clay. Under the same circumstances

sliding surface determined by MIDAS is shallower than the result by ANSYS. When the slope is small the safety factor of the calculation by MIDAS is smaller than that by FLAC (M-C); when slope is large the result is opposite. When slope is small the calculation convergence is realized after the breakthrough of plastic zone

but for large slope calculation divergence occurs before the breakthrough of plastic zone. In the case of small slope the difference between reduction factors upon appearance of calculation divergence and upon breakthrough of plastic zone is significant. But the difference between reduction factors is relative small in the case of large slope

even breakthrough of plastic zone does not occur upon the calculation divergence

which is more remarkable when using MIDAS software.

关键词

Keywords

references

Views

2651

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Analysis of slope stability based on modified relationship of intermediate principal stress

Study of applications of meeting ant colony algorithm to search non-circular critical slip surface of slope

A new search algorithm for strength anisotropy slope stability analysis based on numerical stress field

Gaussian process-based dynamic response surface method for estimating slope failure probability

Study of deformation characteristics of slope rockmass at project of water diversion from Hanjiang River to Weihe River

Related Author

GONG Wen-jun

ZENG Li-feng

SUN Jun-jie

LI Ming-yong

GAO Wei

ZHANG Fei-jun

CHEN Li-ping

ZHANG Ding-li

Related Institution

Department of Civil Engineering, Beihang University

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology

Lanzhou Institute of Seismology, China Earthquake Administration

College of Civil and Transportation Engineering, Hohai University

Wuhan Construction Engineering (Group) Co., Ltd.

AI问答

⁰