Shifted Resonance of Railway Bridges Under Trains Passing by Each Other
學年 110
學期 1
出版（發表）日期 2022-01-17
作品名稱 Shifted Resonance of Railway Bridges Under Trains Passing by Each Other
作品名稱（其他語言）
著者 Yao, Zhongda
單位
出版者
著錄名稱、卷期、頁數 International Journal of Structural Stability and Dynamics 22(7),　2271001
摘要 Dynamic vehicle–bridge interaction (VBI) plays a crucial role in the train-induced vibrations of a railway bridge for its coupling effects may reduce the bridge response and down-shift the resonant speed. The commonly used nominal theoretical resonant speed (=fbD) of a typical railway bridge, however, is only related to the bridge frequency (fb) and car length (D) , but it neglects the VBI effects of the moving trains. Such a shifted resonance phenomenon would become significant for a bridge under two trains passing by each other. This study develops a method using an equivalent modal mass to be added onto the bridge to account for the frequency shift due to the presence of multiple train cars for estimation of the shifted resonant speed. The numerical study demonstrates that the proposed method can predict the shifted resonant speed and explain the shifted-resonance phenomenon of railway bridges under train passages.
關鍵字 Added mass;high-speed railway bridge;resonance;shifted resonance;VBI
語言 en
ISSN 1793-6764
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 JD Yau
審稿制度 否
國別 SGP
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/124251 )

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