水上大直径桩施工关键技术

Key Technology of Large Diameter Pile Construction in Water

本文结合肇庆公铁西江大桥防撞墩工程桩基的施工情况,介绍水上大直径、深孔灌注桩的关键技术,包括钢护筒埋设、冲击成孔、钢筋笼加工与下放、水下混凝土浇筑。

In this paper,based on the construction of the pile foundation of the anti-collision pier engineering of Xijiang Bridge,thekey technologies of underwater large diameter and deep hole cast-in-place pile are introduced,including the laying of steel tube,impacthole,steel cage processing and decentralization,underwater concrete pouring.