摘要
舟山某大桥引桥桩基采用大直径超长钻孔灌注桩,施工中采用了超长双护筒护孔并抵抗海堤滑移。本文以双护筒施工为主介绍了海上大直径超长钻孔灌注桩的施工方法和施工工艺,并就护筒倾斜度控制、冲击钻钻头钻进过程中出现倾斜等问题,提供了解决方法。本文通过介绍施工经验,旨在为今后类似项目的设计与施工提供借鉴。
Large diameter super-long bored piles are used for the approach bridge pile foundation of one bridge in Zhoushan.Super-long double casing pipes are used to protect seawall from displacement in the construction.Double casing construction is based on to introduce the marine construction technology and method of large diameter super-long bored piles,which produces the solution to the inclination control of casing and impact drill during the drilling process.The construction experience can serve as a reference for the design and construction of similar projects in the future.
作者
杨卫东
第五龙
Yang Weidong;Di Wulong(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China)
出处
《港工技术》
2019年第5期101-105,共5页
Port Engineering Technology
关键词
海上
双护筒
大直径超长钻孔灌注桩施工
marine
double casing pipe
large diameter super-long bored piles
