首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Dynamic signatures method for analysis of vehicle bridge resonance
Authors:ZHANG Tian  XIA He and GUO Weiwei
Institution:School of Civil Engineering, Beijing Jiaotong Uninersity, Beijing 100044, P.R. China;School of Civil Engineering, Beijing Jiaotong Uninersity, Beijing 100044, P.R. China;School of Civil Engineering, Beijing Jiaotong Uninersity, Beijing 100044, P.R. China
Abstract:The dynamic behavior of railway bridges (dynamic deflection and acceleration) is one of the running safety control indices for high speed trains. Therefore, the dynamic behavior of railway bridges is studied based on the concept of the dynamic signatures of the train and the bridge. By simplifying the train excitation as a series of moving concentrated forces, the mathematical expressions of the dynamic signatures of the train are obtained through theoretical derivations, and then a method is presented for calculating the resonance speed of trains and the maximum vertical acceleration of the bridge. With this method, the dynamic responses of the simple supported bridge can be calculated quickly. The feasibility of this method is validated through some examples, in which the resonance mechanism of train bridge system and the influencing factors are investigated. In addition, the effect of high frequency components to the bridge acceleration is also analyzed.
Keywords:dynamic signature  resonance speed of trains  high speed train  bridge acceleration
点击此处可从《保鲜与加工》浏览原始摘要信息
点击此处可从《保鲜与加工》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号