Dynamic Response of High Speed Railway Vehicle-Bridge-Wind Coupled System

• Main Authors: Cheng-yu Weng, 翁政佑
• Other Authors: Chern-hwa Chen
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/88wrq2

碩士 === 國立高雄大學 === 土木與環境工程學系碩士班 === 97 === The purpose of this article is to establish an analysis producer of vehicle-bridge-wind coupled system, and modeling. After finish the model establishing, dynamic analysis is accomplished. The vehicle system is considered to sprung mass system in this article. The finite element method analysis software is used to establish the model and analyzed it. Beam element theorem and application in finite element method is described first in article. The method of simplifying the vehicle to sprung mass system is talked about second. The third part is to establish and model the behavior of contact between track and wheel. Finally the vehicle and bridge coupled system is established to compare to the results used by vehicle-bridge interaction(VBI) element method at past paper. After the coupled system is accomplished , (1)the bridge span length, (2)vehicle speed, and (3)the modes of vehicle are focus to make dynamic analysis and calculate the responses of bridge and vehicle. The modes of vehicle are included to single vehicle, serial vehicle, and continuous serial vehicle. The bridge response and vehicle speed are positive relationship under constant bridge span length. Within single and serial vehicle analysis compared, the vehicle speed and the response of wheels are negative relationship but vehicle speed and the acceleration of wheels are positive relationship. The response and span of a bridge are positive relationship to match the basic sense of material force theorem. Using different speeds in serial vehicle analysis, the cancellation phenomenon is happened in the response of bridge, and the amplification phenomenon happened according to observing the acceleration of wheel. Among these results, vehicle and bridge coupled system is accomplished successfully and analyze the dynamic responses of vehicle and bridge.