基于有限元方法的边坡开挖与稳定性分析  

Slope Excavation and Stability Analysis Based on Finite Element Method

作　　者：严铭姣 郭丽霞[1] 沈会兰 张晓丽[1] 温浩 

机构地区：[1]山西工商学院建筑工程学院,山西太原030062

出　　处：《重庆建筑》2017年第12期49-51,共3页Chongqing Architecture

摘　　要：该文采用有限元方法和"生死单元法"对某边坡开挖工程进行模拟,同时采用强度折减法计算了边坡在开挖过程中的稳定安全系数,探讨了开挖过程中边坡应力和位移的分布情况以及边坡稳定安全系数的变化情况。结果发现:随着边坡的开挖,边坡的应力集中现象逐渐消除,坡顶位移减小,但坡脚位移减小不明显;在一、二级开挖过程中,边坡稳定安全系数增加,在三级开挖后,边坡稳定安全系数减小。因此在开挖过程中应注意采取防护措施。This paper simulates a slope excavation project with finite element method and the life and death element method, calculates the stability safety coefficients of the slope in excavation process, and discusses the distribution of slope stress and displacement and the variation of safety slope stability safety coefficients in the excavation process. The study shows that the stress concentration of slope is gradually eliminated with the excavation of slope,the displacement of slope top is decreased, but the decrease of slope foot is not obvious in the slope excavation. During the level-one and-two excavations, the slope stability coefficients increase but decrease after level-three excavation. Therefore, the protective measures should be taken in the excavation process.

关 键 词：边坡开挖 有限元 强度折减法 边坡稳定分析 

分 类 号：TU43[建筑科学—岩土工程]