基坑工程施工对运营地铁隧道的影响分析

Analysis of the Impact of Foundation Pit Construction on the Operation of Subway Stations

地铁保护区内的基坑施工对地铁既有线路结构及运营安全影响显著。文中以邻近地铁的基坑工程为例,通过有限元分析和数据监测,研究基坑施工对既有地铁结构的影响。计算结果表明,基坑开挖卸载对既有线路结构水平位移变形影响显著。模拟数据与监测数据对比,模拟结果与实际情况相吻合,可为类似工程提供一定参考。

The construction of foundation pits within the subway protection zone has a significant impact on the existing line structure and operational safety.This paper taking the construction of adjacent foundation pits as an example,this study investigates the impact of foundation pit construction on existing subway structures through finite element analysis and monitoring data.According to the calculation results,the excavation and unloading of the foundation pit have a significant impact on the horizontal displacement and deformation of the existing line structure.The comparison between numerical simulation data and monitoring data shows that the simulation results are consistent with the actual situation,which can provide some reference for similar projects.