武汉阳逻长江公路大桥北主索鞍吊装

Lifting and Installation of North Main Cable Saddles of Wuhan Yangluo Changjiang River Highway Bridge

介绍武汉阳逻长江公路大桥北主索鞍采用架桥机主梁和起重台车等组成的安装吊架进行吊装施工的情况。该吊架受力稳定、易于操作、节约时间,为主索鞍吊装施工提供了参考方案;吊架的使用同时改善了塔顶门架在悬索桥上部结构安装施工中的受力条件,有利于塔顶门架的方案比选。

This paper deals with the construction of lifting and installation of the north main cable saddles of Wuhan Yangluo Changjiang River Highway Bridge by the lifting support made up of the main girder and hoisting trolley of overhead launching gantry. The support is structurally stable, easy to be operational, time-saving, therefore providing an alternative for installation of the cable saddles. Moreover, the utilization of the support also improves the force conditions of the tower top portals for erection of superstructure of suspension bridge and is helpful to the com- parison and selection of the tower top portals.