东海大桥近岛段工程海上钻孔桩施工  

Construction of Bored Piles over Sea for Donghai Bridge Close to Island Side

作　　者：万琦[1] 刘晓霞[1] 戴荣锋[1] 郑机[2] 

机构地区：[1]中铁大桥局集团第二工程有限公司,江苏南京210015 [2]中铁大桥局集团有限公司,湖北武汉430050

出　　处：《桥梁建设》2005年第B06期13-16,共4页Bridge Construction

摘　　要：东海大桥Ⅲ标近岛段钻孔桩共有φ2.0m、φ2.5m、φ3.0m三种不同桩径,在浪高流急、风大涌强且覆盖层较浅、基岩强度极高、岩面倾斜较大的海域内进行钻孔桩施工,对于钢护筒的插打与固定、钻机的选型、钻孔桩的钻进及斜岩面的处理等方面与内河相比均有特殊之处。介绍海上钻孔桩施工的方法。The bored piles of Contract Ⅲ of Donghai Bridge close to island side have three kinds of different diameters of 2.0 m, 2.5 m and 3.0 m. The piles are constructed over sea where the waves are high and huge, current is swift, wind is strong, and the overburden on the seabed is shallow, the bed rock is extremely hard, and rock surfaces tilt a lot. Compared to the construction of bored piles over river, the construction of the piles of the Bridge is quite exceptional in aspects of setting, fixing of the pile steel casings, selection of boring machines, boring operation and handling of the tilting rock surfaces. In this paper, the methods for construction of the piles over sea are described.

关 键 词：钻孔桩 覆盖层浅 岩面倾斜 基础施工 

分 类 号：U443.154[建筑科学—桥梁与隧道工程] U445.4[交通运输工程—道路与铁道工程]