大跨斜拉桥索力监测研究——以乌江二桥为例

Research on Cable Force Monitoring of Long-span Cable-stayed bridge based on wujiang second bridge

大跨斜拉桥拉索索力状态是衡量桥梁是否处于正常运营状态的一个重要标志。本文首先对斜拉桥拉索索力监测的方法和原理进行了阐述;然后,结合乌江二桥对监测系统、索力监测的设计做了介绍;最后对乌江二桥索力监测的结果进行了分析,从而对拉索索力的状态进行了评估,为斜拉桥桥梁状态的评估提供了依据。

The forces of long-span cable-stayed bridges are an important symbol for determining whether the bridges work well. In this paper, the methods and principle of cable-forces monitoring for long-span cable-stayed bridges are introduced. And then, combined with the Wujiang Second Bridge, the mo-nitoring system and design of monitoring for cable-forces are ex-plained. Finally, cable-forces＇ monitoring results of The Wu-jiang Second Bridge are analyzed. Therefore, healthy evaluation for cables can be conducted and it is the basis of further evalua-tion for the whole bridge.