摘要
对基坑在开挖支护施工过程中的土体应力和位移情况进行了数值计算,对考虑与不考虑降水的模拟结果进行对比,结果表明两者的位移分布规律相似,但降水有利于减小坑底隆起,降水时产生的地表沉降较大;随着开挖的进行,基坑开挖面以下土体单元卸载,内支撑支护有效提高了支护结构的整体稳定性。
In this paper, the stress of the soil, the displacements of pit wall in the course of excavation are calculated. In comparison with two simulation results with and without considering dewatering respectively, the displacement distribution is similar. However, dewatering is bene ficial to reducing the bottom uplift and horizontal displacement, and enlarging the surface subsidence. With the unloading of soil units under excavation work face, the horizontal stress of pit wall soil shows an alternate form of increasing and reducing. The inner supports effectively improve stability of the supporting structure.
出处
《山西建筑》
2009年第17期95-96,共2页
Shanxi Architecture
关键词
深基坑工程
稳定性分析
降水
数值模拟
deep excavation project, stability analysis, dewatering, numerical simulation
