淡江大學機構典藏:Item 987654321/124312
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    题名: Laboratory Vibration Studies of Metro Tracks Equipped with Tuned Rail Dampers
    作者: Yingjie Wang;Zuzana Dimitrovová;Jong‑Dar Yau
    关键词: Metro track;Laboratory test;Tuned Rail Damper;Hammer test;Frequency analysis
    日期: 2023-03-10
    上传时间: 2023-07-28 12:05:25 (UTC+8)
    出版者: Springer publisher
    摘要: Purpose
    With the rapid development of urban metro systems in the growing cities of China, a way to reduce metro train-induced track vibrations transmitted through ground to surrounding buildings has attracted the attention of engineering researchers. Using additional mass, damping and flexural stiffness to improve the dynamic performance of metro tracks, a Tuned Rail Damper (TRD) is developed to mitigate the vibrations of the metro tracks.

    Methods
    In this paper, a laboratory hammer test is designed and carried out to assess the vibration performance of a 3-interval (of 3 × 0.6 m) metro track installed with the TRD sets.

    Results
    The hammer test results indicated that depending on the position of a hammer impulse acting on the 3-interval track unit, different excitation frequencies would be measured.

    Conclusion
    According to the experimental study, the TRD has advantages such as easy installation, convenient inspection by hammer test, and good vibration reduction performance for its flexural strengthening effect on metro tracks. Moreover, the composed TRD-track system has a robust ability to reduce vibrations and an increase of higher frequencies compared to conventional tracks. This dynamic feature can decrease the risk of clip failure in a fastening system subjected to intensive excitations from moving metro trains.
    關聯: Journal of Vibration Engineering & Technologies(2023)
    DOI: 10.1007/s42417-023-00929-1
    显示于类别:[建築學系暨研究所] 期刊論文

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