海上大型钻孔桩施工平台设计与施工

Design and Construction of Offshore Large Bored Pile Construction Platform

杭州湾跨海大桥南航道桥施工条件恶劣,钻孔平台施工难度大,介绍主塔基础钻孔平台的设计思路及利用移动悬挑式导向架沉放钢护筒的施工工艺。

The construction conditions of the south channel bridge of Hangzhou Bay Sea- Crossing Bridge are harsh, and the construction of the boring platforms for foundations of the bridge is therefore challenging. In this paper, the design considerations for the boring platforms for construction of the pylon foundations of the bridge are presented, and the construction technology used with movable and cantilever guiding framework for lowering bored pile steel casings down to river is described as well.