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北京地铁6号线二期北运河东站为地下双层双柱三跨岛式车站,采用先隧后站明挖法施工。施工过程中通过对“桩-撑”围护结构进行优化,确保了明挖深基坑的施工安全,缩短了工程建设周期,形成了一套较为成熟的明挖地铁车站先隧后站法施工技术。深基坑支护技术、管片快速拆除与交叉工序施工组织技术是先隧后站施工的关键技术。
Beijing Metro Line 6 Phase II North Canal East Station is a double-column, double-column, three-bay underground station with a clear tunnel. In the process of construction, the “piling-support” envelope structure is optimized to ensure the construction safety of deep-foundation excavation and the construction period is shortened, and a set of mature tunneling stations Law construction technology. Deep foundation pit support technology, rapid removal of pipe and cross-section construction technology is the construction of the tunnel after the first key technology.