摘要
分析了降雨对黄土边坡稳定性的不利影响,提出了考虑降雨作用的黄土边坡稳定分析方法,并以山西省临离高速公路第三合同段K70+465处为工程背景,运用非饱和土强度理论和有限元强度折减法进行数值模拟分析,研究了降雨强度、降雨时长、雨型和土体渗透系数对边坡稳定性的影响,从而揭示边坡受降雨作用下的瞬态变化过程。研究成果对黄土地区路堑高边坡稳定性评价具有一定的借鉴意义。
In this paper the negative impact of rainfall on the stability of loess slope is analyzed and loess slope stability analysis method is proposed considering of the rainfall effect based on engineering background of the Third Contract Section K70 ＋ 465 of Linxian-Lishi Expressway in Shanxi Province. Unsaturated soil strength theory and finite element strength subtraction for numerical simulation analysis are used to study the rainfall intensity, rainfall duration, rainfall type and the influence on slope stability due to coefficient of permeability of soil mass so as to reveal the transient change process in a slope under rainfall. The research results have essential reference significance for stability evaluation in the high cutting slope area.
出处
《公路》
北大核心
2017年第2期6-11,共6页
Highway
基金
黄土地区公路建设与养护技术交通行业重点实验室开放基金项目
项目编号KLTLR-Y12-4
关键词
黄土边坡稳定性
降雨工况
非饱和土力学性质
有限元数值模拟
强度折减法
loess slope stability
working condition of rainfall
unsaturated soil mechanics
finite element numerical simulation
strength reduction method
