浦东大道管线桥先梁后拱架设方法研究

浦东大道管线桥为提篮双层桁架拱桥,桥梁计算跨径112 m,其上部结构为全钢结构,施工方法和设备受限于桥位处复杂的周边条件。经分析确定采用先梁后拱的施工顺序先分段吊装钢桁架,钢桁架节段支撑于水中搭设的临时支架上,接长支架后再分段吊装双幅拱肋。除南侧拱脚采用大型汽车吊外,其余构件均采用浮吊安装,并结合CAD技术对不同吊装工况进行模拟,确定南、北拱肋采用不同型号的浮吊。

Research of Construction Method for Erecting Girder First and Arch Late for Pudong Avenue Pipeline Bridge

The Pudong Avenue Pipeline Bridge is a double-level truss basket handle arch bridge with calculated span length 112 m and the superstructure of the Bridge is a complete steel structure.The construction method and equipment used for the superstructure were restricted by the complicated surrounding at bridge site and through the analysis,it was finally determined that the steel trusses and arch ribs of the superstructure were to be lifted and erected in blocks in accordance with the construction sequence of e...