大直径超长嵌岩桩基成孔施工技术  

Large Diameter Super Long Rock Socketed Pile Foundation Borehole Construction Technology

作　　者：自杰 朱德利 

机构地区：[1]中交一公局厦门工程有限公司,福建厦门361021

出　　处：《城市道桥与防洪》2011年第10期82-86,9,共5页Urban Roads Bridges & Flood Control

摘　　要：该文介绍了浙江省椒江二桥主塔近140 m长桩基的施工。在施工过程中进行了优化,对工艺进行了改进,尤其是在钻头上方适当位置增加了"扶正器",保证了桩基的倾斜率,确保了桩基顺利成孔。顺利灌注完成后,经最终检测全部为Ⅰ类桩。The article introduces the construction of 140-m long pile foundation of main pylon for Zhejiang Province Jiaojiang Bridge.It is optimized in the construction process and the technology is improved.Especially,the centralizer is added at the proper position above the drill bit to guarantee the inclination rate of pile foundation and ensure the smooth borehole of pile foundation.After the smooth pouring,all piles are finally tested and inspected as Class I piles.

关 键 词：大直径 超长嵌岩桩 成孔施工 技术 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]