平潭海峡大桥4.5 m钻孔桩施工工艺及单价分析  

Analysis of Construction Technology and Unit Price of Bored Pile with 4.5 m Diameter of Pingtan Strait Bridge

作　　者：陈洪军[1] 彭伟力[1] 

机构地区：[1]中铁大桥局集团有限公司,湖北武汉350217

出　　处：《铁路工程技术与经济》2017年第4期29-33,共5页Railway Engineering Technology and Economy

摘　　要：新建福平铁路的平潭海峡公铁两用大桥,为国内首座公铁两用跨海大桥,其鼓屿门水道桥主辅墩采用4.5 m超大直径钻孔桩基础。因该桥址所处海洋环境恶劣、地质条件复杂,给钻孔桩施工带来诸多不利因素。此文针对现场实际情况,阐述钻孔桩施工工艺和工料机配备,并对钻孔桩成孔单价和影响因素进行分析。The Pingtan Strait bridge of Fuping railway is the first combined highway and railway cross - sea bridge in china. The 4.5 m super large diameter bored pile foundation is adopted for the main pier and auxiliary pier of Gulangyu aqueduct bridge. Because of the bad marine environment and complicated geological conditions in the bridge site, many unfavorable factors have been brought into the construction of bored piles. According to the actual situation at the scene, the construction technology and the arrangement of artificial, material and machinery are present in this paper. And the unit price and influencing factors of bored pile are analyzed.

关 键 词：跨海大桥 大直径钻孔桩 施工工艺 单价分析 

分 类 号：U445.55[建筑科学—桥梁与隧道工程]