黄土地区基坑开挖对边坡稳定性的影响分析

Analysis on the impact of foundation excavation of loose region upon slope stability

采用大型模型试验和结构有限元分析软件ANSYS,分析了某边坡的稳定性,在模型箱中埋入土压力盒,测定边坡开挖前后土体应力的变化情况,并通过杀死单元的方式模拟了基坑开挖过程,得到边坡开挖前后位移以及应力变化,经实验和数值模拟比较表明,基坑开挖过程既是卸载的过程同时也破坏了土体原有结构的稳定性。

A large scale model test and finite element analysis software ANSYS to analyze the stability of side slope, soil pressure box buried in the model box, the measurement of the change of the slope before and after excavation of soil stress, at the same time by killing the unit to simu-late the excavation process. Get the slope before and after excavation displacement and stress change, through experiments and numerical simula-tion analysis and comparison can be seen in the excavation process is the unloading process also destroys the stability of soil structure.