浮置板轨道结构振动模态分析

Modal Analysis of the Floating Track Bed Vibration System

人们对城市轨道交通所产生的振动及噪声污染问题越来越重视 ,为此在减振要求特殊地段采用了浮置板轨道结构。而轨道结构的减振性能与其固有频率有关 ,因此需要对轨道结构的动力特性进行更深入的研究。建立了浮置板轨道系统的振动分析模型 ,并对浮置板轨道系统进行了模态分析 ,得到了该系统的振动动力特性 (固有频率、振型 )

Accompanied by the rapid development of urban rail transit in China,the problem of vibration and noise pollution produced during traffic operation becomes more and more serious.Floating track structure is adopted in special districts of vibration limitation.The vibration reducing capabilities of track structure is connected with its eigenfrency,so the dynamic properties of the track need further studies.This paper sets up a vibration model of floating track bed system,makes a modal analysis of the vibrational dynamic properties,and obtains the feature of the vibration:the eigenfrency and eigenmode,which has some reference value for the design of track.