盾构施工近距离下穿既有地铁车站影响分析

Analysis of Influence of Shield Tunneling Undercrossing Existing Subway Station in Short Distance

为研究盾构下穿对既有地铁车站的影响,该文以重庆轨道交通5号线北延伸段下穿既有10号线中央公园西站工程项目为例,对下穿隧道施工引起的既有地铁车站结构变形进行监测与分析。首先,介绍了监测方案的设计,其次基于监测数据重点对距离维度和时间维度的变形规律进行了总结分析,讨论了变形原因,对类似工程施工具有较好的参考价值。

In order to study the influence of shield undercrossing on the existing subway station,the structural deformation of the existing subway station caused by the construction of undercrossing tunnel is monitored and analyzed by taking the project of the north extension section of Chongqing Rail Transit Line 5 undercrossing the existing Central Park West Station of Line 10 as an example.Firstly,the design of monitoring scheme is introduced.Secondly,based on the monitoring date the deformation rules of distance dimension and time dimension are summarized and analysed,and the causes of deformation are discussed,which has a good reference value for similar engineering construction.