武汉市江汉三桥主桥钢管拱桁架节段吊装

Lifting of Steel Pipe Arch Truss Segment of Main Bridge of Wuhan Jianghan No.3 Bridge

武汉市江汉三桥主桥系净跨 2 80 0m下承式钢管混凝土桁架系杆无铰拱桥 ,钢管拱桁架节段的吊装采用了缆塔与扣锚塔合二为一的空间高塔框架结构及以控制扣挂系统的变位为主、索力校核为辅的新方法。通过工程实例 ,介绍了钢管拱桁架节段吊装施工的方法与原理、施工程序、施工布置及技术要点等。

The main bridge of Wuhan Jianghan No 3 Bridge is an under\|supporting steel pipe concrete truss non\|hinge tied arch bridge. The lifting of its steel pipe arch truss segment adopted spatial high tower frame structure combined cable tower and anchor tower and mainly controlling the shifting of hanging system combined checking cable force method. With practical projects, authors introduce the construction method and principle, schedule, plan and technical points of the lifting construction of steel pipe arch truss segments.