岩土力学2017，Vol.38Issue(6)：1733-1738,6.DOI:10.16285/j.rsm.2017.06.023
基于滑移线场理论的地震作用下土质边坡稳定性分析
Seismic stability analysis of soil slope using theory of slip line field
摘要
Abstract
It is important to locate the slip surface in stability analysis of soil slope.The current method,circular slip surface method,results in a major error in the simulation analysis.In this paper,a method for seismic stability analysis of soil slope is proposed based on the theory of slip line field and dynamic finite element.Firstly,the stress field of soil slope is determined under seismic loading.Then,the method of slip line field is used to search the critical slip line under different conditions,and safety factor for every slip line is achieved.Finally,the seismic stability analysis of soil slope is quantified by the minimum mean safety factor.The proposed procedure is used to determine the critical slip lines and safety factors of an example slope at different moments.Seismic stability of the soil slope is evaluated by using the minimum mean safety factor.The study indicates that the shear band is composed of the slip lines with safety factors below 1.2.The shear band is consistent with the plastic zone of soil slope.关键词
土质边坡/稳定性/滑移线场/地震作用/最小平均安全系数Key words
soil slop/stability/slip line field/seismic loading/the minimum mean safety factor分类
建筑与水利引用本文复制引用
龚文惠,陈训龙,邱金伟,王佳,钟旭晗..基于滑移线场理论的地震作用下土质边坡稳定性分析[J].岩土力学,2017,38(6):1733-1738,6.基金项目
国家自然科学基金项目(No.51278217).This work was supported by the Nation Science Foundation of China (51278217). （No.51278217）
