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以某地铁车站深基坑工程为研究背景,介绍了该工程周边环境、结构型式及拟建场区的地质条件;根据该工程特点将该工程分为四个典型工况,并根据各个工况结束时测得的基坑周围土体沉降结果,分析了该基坑在开挖过程中土体沉降规律;通过建立三维模型对基坑开挖过程中周围土体沉降情况进行了数值模拟,并将计算结果与实测结果进行对比分析,最终得到基坑开挖过程中周围土体沉降规律及影响范围。本文的研究成果可作为深基坑设计与制定施工方案的科学依据。
Taking the deep foundation pit project of a metro station as a research background, the geological conditions of the surrounding environment, structure type and the proposed site are introduced. According to the characteristics of the project, the project is divided into four typical working conditions, and according to each working condition At the end of the excavation, the result of soil settlement around the excavation was analyzed, and the settlement law of the soil during the excavation was analyzed. The settlement of the surrounding soil during excavation was numerically simulated by establishing a 3D model. Comparing the calculated result with the measured result, the settlement regularity and the influence range of surrounding soil are obtained finally. The research results of this paper can be used as the scientific basis for the design and construction of the deep foundation pit.