摘要
为探讨地震作用下松散堆积体边坡的变形破坏特征,采用颗粒流模拟程序(PFC^(2D))输入水平向汶川地震波,对不同坡度及不同细观参数的土质边坡进行动力作用下变形破坏的全过程模拟。研究表明,相同地震力作用下坡度主要影响土质边坡的破坏范围,边坡越陡,破坏深度越大,破坏边界越靠后;而细观参数则影响边坡的破坏形式,黏性土边坡的滑体保持了较好的整体性,滑面呈弧形;而砂性土边坡的破坏具有流变性且滑面呈上陡下缓的折线形。
This paper aims to study the failure characteristics of the soil slope under the earthquake. It uses particle flow code（PFC2D） , simulates the failure process of the soil slopes with different inclinations and micro-parameters under a Wenchuan horizontal seismic wave. The results show that the slope angle mainly affects the failure extent. The steeper the slope is,the deeper the sliding surface is .The micro-parameters control the failure type of the slope. The slide body of the cohesive slope can move as a whole with an arc-shaped sliding surface. Yet the failure of non-cohesive slope is rheologically behaved with a polyline sliding surface whose upper part is steep and lower part is flat.
出处
《工程地质学报》
CSCD
北大核心
2017年第6期1537-1546,共10页
Journal of Engineering Geology
基金
国家自然科学基金(41372293)
四川省国土资源厅科学研究计划(KJ-2014-10
KJ-2015-18
KJ-2016-8)
四川交通建设科技项目(2015A1-3)资助
