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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。
Large-scale model test and structural finite element analysis software ANSYS are used to analyze the stability of a slope. The earth pressure box is embedded in the model box to measure the change of soil stress before and after excavation. By means of killing the unit The excavation process of foundation pit is modeled and the displacement and stress change before and after excavation are obtained. The comparison between experimental and numerical simulation shows that the excavation process of foundation pit is not only the process of unloading but also the stability of original structure of soil.