天兴洲长江大桥φ3.40 m大直径钻孔桩施工  

Construction of φ3.40-m Large Diameter Bored Piles of Tianxingzhou Changjiang River Bridge

作　　者：陈宁贤[1] 张红心[1] 佘巧宁[1] 

机构地区：[1]中铁大桥局集团第五工程有限公司,江西九江332001

出　　处：《桥梁建设》2006年第4期49-51,共3页Bridge Construction

摘　　要：天兴洲长江大桥3号主塔墩基础为40根3.40 m大直径钻孔桩,桩孔深度达105.5m,下伏基岩为软硬不均的胶结砾岩,钻孔过程水位、流速变化大,介绍复杂地质及水文条件下的钻孔施工技术。The foundation of main pylon pier No. 3 of Tianxingzhou Changjiang River Bridge is composed of 40 numbers of Ф3.40-m large diameter bored piles with pile hole depth reaching 105.5 m in the riverbed where the underlying bedrock is of cementation conglomerate of uneven hardness, and the water level and flow speed of the River vary greatly during boring construction of the piles. In this paper, the boring construction techniques for the piles in the complicated geologic and hydraulic conditions are described.

关 键 词：斜拉桥 钻孔桩 桥梁基础 桥梁施工 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U445.55[交通运输工程—道路与铁道工程]