临近既有城市轨道交通工程的基坑施工影响分析

Influence of Foundation Pit Construction on Adjacent Existing Urban Rail Transit Engineering

随着城市地下轨道交通工程的发展,临近既有城市轨道交通的工程越来越多。新建地铁车站基坑工程,会引起临近既有地铁车站、区间隧道等结构产生变形,因此,需要对类似工程施工影响分析进行深入研究。论文以临近既有2号线莫愁湖站的南京地铁7号线新建莫愁湖站基坑施工为实例,运用有限元软件对施工过程进行了建模分析,提出了相应处置措施,为类似工程施工提供参考。

With the development of urban underground rail transit project, there are more and more projects closing to the existing urban rail transit project. The construction of the foundation pit of a new metro station will cause the deformation of the structures and surrounding structures near the existing metro stations and tunnels. The risk analysis of similar projects needs to be further studied. Taking the foundation construction of new Mochou Lake Station in Nanjing Metro Line 7 as an example, which is closed to the existing Mochou Lake Station in Nanjing Metro Line 2, the construction process was modeled and analyzed by using finite element method, and the corresponding risk analysis and construction measures were put forward, to provide a reference for similar projects.