港珠澳大桥青州航道桥主塔墩钢套箱设计与施工

Design and Construction of Steel Casing for Main Tower Piers for Qingzhou Navigable Spans of Hong Kong-Zhuhai-Macao Bridge

论述了钢套箱的总体设计思想、结构构造、施工工艺及技术要点。钢套箱主体结构一体两用,既作为施工承台的临时挡水结构和模板,又作为运营期防船舶撞击的永久结构,保护主塔基础的安全。

This paper introduces the overall design concept, structural construction, construction technology and technical key points of the steel casing for the main tower piers of the bridge. The main structure of the steel casing has dual-use inte- grated, both as the temporary water retaining structure and the formwork for the tower piers and also the permanent structure against ship collision when the bridge is operational to protect the foundation of the main towers.