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为了更好地解决大跨径钢箱提篮拱桥因缆索吊装系统受地形条件限制而增加的施工难度,重庆市北碚区朝阳复建桥采用了有别于一般千斤顶斜拉扣挂法施工的缆塔、扣塔合一的吊装结构体系,重点介绍了该结构体系的组成,借此分析计算了该体系的受力特点和传力特性,验证了该结构的安全性和稳定性。计算结果表明,该结构简单有效,安装精度能够满足大跨径钢箱提篮拱桥的现场拼装要求。
In order to solve the difficulty of construction caused by the restriction of the topography of the cable hoisting system due to the cable hoisting system in order to solve the difficulty of construction of the long-span steel box hoisting arch bridge, the construction of the Chaoyang Reconstruction Bridge in Beibei District of Chongqing is different from the construction of the general tower And the structure of the hoisting system with the buckle and the tower are introduced. The structure of the system is introduced emphatically. By analyzing and calculating the force characteristics and force transmission characteristics of the system, the safety and stability of the system are verified. The calculation results show that the structure is simple and effective, and the installation accuracy can meet the requirements of on-site assembly of long-span steel box-girder arch bridge.