赤道几内亚Mbini大桥深水无覆盖层倾斜岩面钻孔灌注桩施工技术  

Deepwater Intectate Inclined Rock Surface Cast-in-place Pile Construction Technology of Mbini Bridge in Equatorial Guinea

作　　者：庞平 张文远 

机构地区：[1]中交第三公路工程局有限公司第五工程分公司,北京市100021

出　　处：《城市道桥与防洪》2013年第2期67-68,5,共2页Urban Roads Bridges & Flood Control

摘　　要：赤道几内亚Mbini大桥22号水中墩位处河床为无覆盖层倾斜岩面,无法按传统的方法埋设钢护筒,桩基础施工难度大。结合实际施工特点,总结了倾斜岩面钻孔灌注桩的施工技术。实践证明,此施工技术切实可行,安全可靠,节约成本,节省施工时间,对类似地质结构的桩基施工具有一定的参考价值。The riverbed at No.22 pier of Mbini Bridge in Equatorial Guinea is the intectate inclined rock surface where it is hard to embed the steel casing by the traditional methods,and it is hard to construct to pile foundation.According to the practical construction characteristics,the article sums up the construction technology of inclined rock surface cast-in-place pile.The practice proves that this construction technology is feasible,safe and reliable with the economized cost and construction time,which can be referred for the pile foundation construction of the similar geological structure.

关 键 词：无覆盖层 倾斜岩面 钻孔灌注桩 施工技术 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]