地铁特大风道进主体暗挖施工转换技术

北京地铁黄庄站是目前国内最大的一次性暗挖车站,车站南北端风道是北京地铁中最大的风道。由风道进入车站主体施工,受力转换工序是关系结构安全、质量的重要环节。详细介绍了黄庄站特大风道进主体暗挖施工时采取增加结构整体性和开口加强的措施、受力转换技术,提出了施工中质量、安全控制要点。

Underground Excavation Conversion Technology for Entering Main Construction through Subway Large Adit

Beijing Metro Huangzhuang Station Project is currently the largest one-off excavation station,which has the biggest ventilastion adit in north and south ends in Beijing subway stations.Entering the station main construction from adits,force transformation process is the most important link of structural safety and quality.This paper introduces the strenthening of the overall structure,the entrance-enhanced measures and the force transformation,which ensure the safety of multi-tunnel entrance.