深基坑施工影响下邻近既有地铁设施的监测及变形分析
Monitoring and Deformation Analysis of Adjacent Existing Subway Facilities Influenced by Deep Foundation Pit Excavation

为了研究深基坑开挖对邻近既有地铁设施的影响，以某项目为工程背景，通过对施工影响下既有地铁设施的施工监测，分析了整个施工周期下地铁设施的结构变形情况。研究结果表明：深基坑的开挖导致邻近地铁轨行区和站厅层产生变形，距离越近，变形越显著。在工程施工过程中，应关注地铁结构赋存土层性质、基坑局部深坑对地铁结构变形的影响，同时也应关注基坑的时空效应对周边环境的影响。
In order to study the influence of deep foundation pit excavation on adjacent existing subway facilities, taking a project as the engineering background, through the construction monitoring of existing subway facilities under the influence of construction, the structural deformation of subway facilities during the whole construction period is analyzed. The results show that the excavation of the deep foundation pit leads to the deformation of the adjacent subway track area and station hall floor. The closer the distance is, the more significant the deformation is. During the construction of the project, attention should be paid to the nature of the soil layer in the subway structure, the influence of the local deep pit of the foundation pit on the deformation of the subway structure, and the influence of the space-time effect of the foundation pit on the surrounding environment.