采用EFDD法对系杆拱桥模态试验的分析

Modal Test and Analysis of the Tied Arch Bridge by Using EFDD Method

EFDD模态参数识别方法是一种增强型频域分解方法,通过移动测点试验方法和EFDD方法分析识别白蒲大桥的模态频率和模态振型,并将实测所得的结果与Midas有限元动力分析所得的理论结果进行对比,从而对桥梁的动态性能做出科学评价。

This paper introduces the basic concepts and principles of EFDD for modal analysis, PU bridge for the research object of experimental modal analysis, completing the entire test process by using the mobile measuring point method, to identify the modal frequencies and mode shapes of PU bridge by u- sing EFDD method, comparing the experiment result with the modal frequency and modal shape by Midas dynamic finite element analysis, to make evaluation about the dynamic performance of the bridge.