北京地铁5号线磁器口车站暗挖中洞法施工技术

Advance Middle Hole Sonstruction Technology for Excavation in Ciqikou Station of Beijing Metro Line 5

随着经济实力的快速增强,城市化进程逐步加快,城市规模不断扩大,城市轨道交通迅猛发展,为有效解决地铁施工对城市交通的影响问题,繁忙路口地铁车站自然首选暗挖法施工。暗挖中洞法是地铁车站暗挖施工中比较成熟的方法之一。针对首次应用暗挖中洞法施工的磁器口车站,着重介绍了三拱两柱地铁车站暗挖中洞法的施工原理、施工步序、施工方法及钢管柱施工要领。

With the rapidly increasing economic strength,and gradually accelerating process of urbanization,constant expanding of the city,and fast developing of urban rail transport,sub-surface excavation is the first choice of construction when the subway station is built at busy intersection in order to reduce the impact of the subway construction on urban transport.Advance middle hole construction is one of the most mature methods.In this paper,the application of center drift method at Ciqikou station is introduced,with focuses on the construction principle,construction sequences,construction methods and construction essentials of the steel columns.