钢管混凝土拱桥扣索施工及索力分析

Cable Construction and Its Analysis of Concrete-filled in Steel Tubular Arch Bridge

在大跨度钢管混凝土拱桥塔架 /扣架一体化缆索吊装施工过程中 ,准确计算出不断变化的扣索内力 ,对塔架与钢管拱肋结构的稳定性、桥梁线形具有十分重要的意义 .文中以龙潭河大桥为实例 ,跟踪施工过程进行索力计算 ,动态调整 ,其结果与监测结果比较十分吻合 .在严格的施工监控下 ,减少了施工设备的投入 。

In the process of construction for building large-span concrete-filled in steel tubular arch bridge by using an integrated installation tower, it is important to calculate the changing cable force accurately. In this paper, a cable force formula by simulating the working condition is given. And the calculated results of cable forces coincide with that of the measured. Under the strictly construction control, it can reduce the engineering investment, assure the safety and stability of bridge structure. The result is useful for the building of the same type of bridge.