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文章依托某市轨道交通地铁站深基坑工程为背景,运用Flac~(3D)有限元分析软件对深基坑开挖的过程进行模拟计算,并与工程现场监测的实际结果进行对比分析,概括总结了膨胀土地区深基坑开挖过程中产生的地表沉降的变形规律、围护结构的水平位移,运用分析结果作为指导并制定基坑施工的安全防护措施,以保证基坑开挖施工的安全。
Based on the deep excavation project of a metro station in a city, the article uses Flac 3D finite element analysis software to simulate the process of deep foundation pit excavation and compares it with the actual results of on-site monitoring The deformation law of surface subsidence and the horizontal displacement of retaining structure in the process of deep foundation pit excavation in expansive soil area are summarized, and the results of analysis are used as a guide to formulate the safety measures for the construction of foundation pit so as to ensure the construction of foundation pit excavation Safety.