摘要
边坡潜在滑面的确定是边坡稳定性分析的主要任务之一,鉴于坡体位移可在现场监测中直接得到,本文提出边坡潜在滑面确定的位移判据,采用大变形有限元,首先计算出边坡的塑性区和位移场,然后在开挖面的不同高度作塑性区内的水平位移参考线,依次连接参考线上的位移突变点,即得到边坡失稳的潜在滑面位置。
One of the tasks in the stability study of excavating slope is how to determinate the slip surface. Think of the displacement is easy to get in the engineering, we put forward using the displacement criterion to determinate the slope slip surface. Firstly, calculate the plastic zone and displacement field using FLAC30 ,secondly ,make some horizon displacement reference line on the working plane in the plastic zone, then, find out the accident point of displacement on the reference line. When those point is joined by a line progressively, the potential slip surface is found.
出处
《四川建筑科学研究》
北大核心
2006年第5期98-101,共4页
Sichuan Building Science
关键词
开挖边坡
潜在滑面
位移判据
数值计算
边坡稳定性分析
excavation slope
slip surface
displacement criterion
numerical calculation
stability analysis of slope
