The structure-born noise from a railway concrete viaduct due to vehicle passage is predicted via analysis of vehicle-track interaction, vibration power flow into and sound radiation from the structure. The dominant component of the structure-born noise from a concrete viaduct is below 100 Hz, which is associated with the vehicle's unsprung mass oscillating on the track stiffness, and irrelevant to train speed. Use of soft rail pad/fastener can effectively reduce the structure-born noise via reducing the dynamic force transmission to the viaduct, and thus, the vibration power flow. A reduction of 15 dB (A) in sound power radiated from a concrete viaduct can be achieved by replacing 60 MN/m pad with 6 MN/m rail fastener.


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    Title :

    Estimation of Vibration Power Flow to and Sound Radiation from a Railway Concrete Viaduct Due to Vehicle/Track Interaction


    Contributors:
    Li, Z.G. (author) / Wu, T.X. (author)


    Publication date :

    2012


    Size :

    9 Seiten





    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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