长沙理工大学学报（自然科学版）2017，Vol.14Issue(1)：17-23,7.
降雨入渗对粗粒土斜坡路堤稳定性及变形影响的数值分析
Numerical analysis of rainfall infiltration`s influence on the stabilityand deformation of coarse-grained soil embankment upon slopes
摘要
Abstract
In order to analyze the uneven settlement and instability of coarse-grained soil of embankment upon slopes in Hangxinjing expressway, based on the saturated-unsaturated seepage theory and combined with relevant experimental data and meteorological data, coarse-grained slopes`seepage characteristics and change of stability under rainfall infiltration are analyzed using numerical software.Research indicates the greater the inclination of the bedrock, the more prone to the positive pore water pressure in the coarse grained embankment.In different bedrock inclination, the safety factor of the coarse grained soil embankment decreases with the rainfall, after the rain stopped, the safety factor quickly restored.The greater the inclination of bedrock, the lower the safety factor of slope embankment under the same conditions.The greater the inclination of bedrock, the smaller the effect of rainfall on the safety factor of coarse-grained soil of embankment upon slopes.The maximum settlement value of coarse-grained soil of embankment upon slopes increases with the inclination of bedrock.关键词
降雨入渗/粗粒土/斜坡路堤/路堤渗透特性/路堤稳定性Key words
rainfall infiltration/coarse-grained soil/embankment upon slopes/seepage characteristics of embankment/embankment stability分类
交通工程引用本文复制引用
何忠明,刘登生,付宏渊,曾铃..降雨入渗对粗粒土斜坡路堤稳定性及变形影响的数值分析[J].长沙理工大学学报（自然科学版）,2017,14(1):17-23,7.基金项目
国家自然科学基金资助项目(51508042,51678073,51508040, 51578079) （51508042,51678073,51508040, 51578079）
湖南省重点研发计划项目(2016SK2023) （2016SK2023）
