淡江大學機構典藏:Item 987654321/119946
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    題名: Prediction of Crosswind-Induced Derailment of Train–Rail–Bridge System by Vector Mechanics
    其他題名: 英
    作者: Wang, Su-Mei;Yau, Jong-Dar;Duan, Yuan-Feng;Ni, Yi-Qing;Wan, Hua-Ping;Wu, Si Kai;Ting, Edward C.
    關鍵詞: Train–rail–bridge interaction;Crosswind;Derailment;Vector mechanics (VM);Wheel-rail contact model.
    日期: 2020-12
    上傳時間: 2021-02-24 12:12:13 (UTC+8)
    出版者: American Society of Civil Engineers
    摘要: A train–rail–bridge (TRB) interaction model of vector mechanics (VM) is developed to predict the derailment of a train traveling
    over cable-supported bridges under crosswinds. The aerodynamic coefficients measured from the bridge section-model in wind tunnel testing
    is used to simulate the unsteady wind pressure acting on the train-bridge system by buffeting forces in the time domain. A versatile wheel-rail
    contact model considering the wheel-rail contact geometry is then formulated to assess the risk of derailment of a running train. The feasibility
    and effectiveness of the proposed VM-TRB model are verified by comparison with a conventional finite element procedure. To assess the
    running safety of the train, a two-phase plot of derailment factors for each pair of wheelsets is generated. The plots indicate that both wind
    velocity and train speed are critical factors that lead the train cars to potential derailment. Nevertheless, the linking railcar couplers play a
    holding role in reducing the separation or jumping of the moving wheels from the rail. The case study well demonstrates the capability of the
    VM-TRB model in dealing with train derailment.
    關聯: ASCE Journal of Engineering Mechanics 146(12), 04020132
    DOI: 10.1061/(ASCE)EM.1943-7889.0001869
    顯示於類別:[土木工程學系暨研究所] 期刊論文

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