巴东长江大桥模态分析  

Modal Analysis for Badong Yangtze River Bridge

作　　者：周新[1] 

机构地区：[1]中冶南方工程技术有限公司,武汉430223

出　　处：《建材世界》2012年第3期78-80,共3页The World of Building Materials

基　　金：国家自然科学基金(50508034)

摘　　要：通过脉动试验和模态分析软件对巴东长江大桥动态特性进行了分析,得到其试验模态频率及振型,并通过数值计算得到振动频率,对计算模态和试验模态进行振型相关性分析,将有限元的动态分析与试验数据有机地结合起来,验证了有限元模型,同时为工程实践提供了帮助。The dynamic performance of Badong Yangtze River Bridge was analyzed and its oscillating frequency anti the corresponding mode were obtained from the pulsating on test and the modal analysis software. A correlative analysis of the oscillating frequencies and modes both from the calculation and the experiments was carried out. The results from the correlative analysis proved that the dynamic analysis by the finite element model of Badong Yangtze River Bridge was available for practice use.

关 键 词：动态特性 脉动试验 模态分析 有限元法 

分 类 号：U441[建筑科学—桥梁与隧道工程]