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运用ABAQUS进行岩质边坡稳定性分析的屈服准则选取

发表时间:2010-08-15  浏览量:1201  下载量:442
全部作者: 吕直华,陈郡鹏
作者单位: 河海大学力学与材料学院
摘 要: 在边坡稳定弹塑性有限元分析中,岩土体屈服准则的选取直接影响边坡稳定性的分析结果。在相同模型与相同岩土材料参数下,采用ABAQUS大型有限元软件,以塑性迭代计算不收敛作为边坡失稳的主要判据,分别采用Mohr-Coulomb (M-C)外角点外接圆模型、M-C内角点外接圆模型、M-C内切圆模型、M-C等面积圆以及M-C精确匹配圆模型对岩坡的稳定性安全系数进行研究,并编制了基于ABAQUS有限元软件安全系数的自动求解程序。通过与Sarma法稳定性安全系数进行对比,探讨屈服准则的选取对安全系数的影响,得出了较为合理的研究结果。
关 键 词: 岩土力学;屈服准则;强度折减法;安全系数; ABAQUS软件
Title: The yield criterion selecting of stability analysis on rock slope using ABAQUS
Author: LV Zhihua, CHEN Junpeng
Organization: College of Mechanics and Materials, Hohai University
Abstract: In the elastic�plastic finite element analysis of slope stability, the selection of rock and soil yield criterion directly impacts the slope stability analysis. Considering the same model and geotechnical materials with the same parameters, using ABAQUS finite element software and plastic iterative calculation divergence as a major slope failure criterion, respectively using Mohr-Coulomb(M-C) exterior angle point circumcircle model, M-C interior angle point circumcircle model, M-C inscribed circle model, M-C equal�area circle model and M-C accurately matched circle model, this paper has studied the rock slope stability safety factor and has made a program for automatic calculation of safety factor based on ABAQUS finite element software. By comparing to several methods’ safety factors, this paper also discusses the impact of yield criterion selection on the safety factor.
Key words: rock and soil mechanics; yield criterion; strength reserve method; safety factor; ABAQUS software
发表期数: 2010年8月第15期
引用格式: 吕直华,陈郡鹏. 运用ABAQUS进行岩质边坡稳定性分析的屈服准则选取[J]. 中国科技论文在线精品论文,2010,3(15):1601-1605.
 
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