摘要
目前国内外关于土洞稳定性的分析方法发展较快,已经可以采用有限元强度折减法来进行分析计算。基于PLAXIS有限元程序采用有限元强度折减法,进行了土洞在不考虑地下水及渗流作用下的稳定性分析,并采用Drumm,E.C.等总结出的有限元方法进行了验算。经对比,PLAXIS有限元程序对于土洞稳定性分析有较好的适用性,而且弥补了Drumm,E.C.等的有限元方法中不能分析外加超载的不足,能够较全面的分析土洞在多工况下的稳定性,可为隐伏土洞处理提供理论依据。
The analysis methods on the stability of soil cavities have developed rapidly at both domestically and abroad.The Finite Element Method（FEM）with Strength Reduction Method is frequently used in the stability evaluation of soil cavities.This paper presents the analytical results of FEM with Strength Reduction Method by using PLAXIS on the stability of a soil cavity without considering the effect of groundwater and seepage.The results were also examined by the stability charts developed by Drumm et al through FEM.The results indicate that the FEM evaluation of soil cavity stability with PLAXIS is appropriate.The approach used also improved the charts developed by Drumm et al since no surcharge was considered in the charts.
出处
《土工基础》
2017年第6期709-711,724,共4页
Soil Engineering and Foundation
关键词
土洞
稳定性
PLAXIS
有限元强度折减法
地基处理
Soil Cavities
Stability Analysis
PLAXIS Software
Finite Element Method with Strength Reduction Method
Soil Improvement
