大跨径无支架缆索吊吊装系统设计与施工

Design and Construction of Long Span System with Non-standing Cable Hoists

钱塘江四桥为双层桥面双主拱钢管混凝土组合系杆拱桥,主桥共11跨,包括下承、中承、上承式3种结构形式。上部结构的吊装采用两跨无支架缆索吊吊装施工,拱肋安装采用斜拉扣挂体系,技术含量高,施工难度大。

The 4th Qiantangjiang River Bridge in Hangzhou is a concrete-filled steel tubular composite tied arch bridge with double main arches.the main bridge is composed of 11 pans that include 3 types of structures in form of through arch,half-through arch and deck arch.The superconstruction adops two spans non-standing cable hoists to lifting and elevating,the steeltubular is fixed by adoping slanting and drawing cable.The technique content is very high and great difficulties have been overcome in the construction.