大断面矩形顶管下穿城市繁华路段施工控制技术

Construction Control Technology of Large Cross-section Rectangular Pipe Jacking Underpassing Urban Bustling Road Sections

为减小城市繁华路段大断面矩形顶管隧道施工对路面和临近建筑物的影响,文中依托武汉地铁7号线车站附属出入口矩形顶管工程,通过合理的设备选型、施工过程控制及针对性加固措施,结合信息化监测手段,将施工沉降控制在2 mm以内,安全、高效地完成了附属通道顶管施工,并以此总结了大断面矩形顶管下穿城市繁华路段施工控制技术,以期为类似工程提供参考。

In order to reduce the impact of large cross-section rectangular pipe jacking tunnel construction on the road surface and adjacent structures in the busy section of the city,relying on the rectangular pipe jacking project at the attached entrance and exit of Wuhan Metro Line 7 station,the construction settlement is controlled within 2 mm through reasonable equipment selection,construction process control and targeted reinforcement measures,combined with information monitoring means.The pipe jacking construction of the auxiliary passage is completed safely and efficiently,and the construction control technology of large cross-section rectangular pipe jacking under the busy section of the city is summarized,which can provide reference for similar projects in the future.