斜拉桥的静、动态电测法测试和频谱分析

Stain Measurement and Frequency Analysis on a Cable-Stayed Bridge

本文用电测法对独塔斜拉桥的桥塔锚固区、索管及钢梁锚固区在静、动态不同工况下的应变和应力进行了测量和分析，并利用高速数据采集系统和快速付里叶变换（简称ＦＦＴ）对动载工况下的应变───时间响应信号进行了频谱分析，为优化工程设计和桥的合理使用提供了可靠的参考依据。

Strain measurement and stress analysis are carried out in the tower anchor range,cable pipes and steel born anchor-range of a single tower cable-stayed bridge undervarious static and dynamic conditions.The frequency analysis of strain-time response signals isPerformed with a fast sampling system and fast Fourier transform.These resultS provide arelisble basis for optimum design and rational use of the bridge.