暗挖区间隧道密贴下穿既有线车站关键技术研究

摘要

以北京地铁6号线下穿既有车站工程为例,提出了密贴下穿既有车站的施工技术,并制定了CRD+千斤顶支护法及注浆等辅助措施,探讨了施工中的操作要点,通过对既有车站结构变形的分析,指出车站结构处于安全可控状态,为类似工程的施工提供了参考.%Taking No. 6 Metro's underpass existing station in Beijing as the example,the paper points out its construction techniques,makes out some measures including CRD + lifting jack support method and grouting,explores the operation points in the construction,and points out the station structure stays in the safe and controllable status according to the analysis of the structural deformation in existing stations,so as to provide some reference for the construction of similar projects.