Trains give rise to vibration which propagates through the ground to nearby buildings. At low frequencies (about 4 to 80 Hz) whole body vibration may be perceived while at higher frequencies (about 30 to 200 Hz) sound is radiated into the rooms. Low-frequency vibration is primarily associated with heavy axle-load freight trains running on lines on the ground surface. Structure-radiated noise is most often perceptible from trains running in cut-and-cover or bored tunnels where the direct sound of the train is removed. Numerical models for the transmission of vibration through the ground are required to assess the effect of structural alterations of cuttings, embankments, foundation engineering and tunnels. A coupled boundary element/finite element model for vibration propagation is presented. By restricting analysis to two-dimensions, trend analysis can be performed with much less detailed models than would be required for three dimensions. Here the model is used to study the effect of design alterations of a bored tunnel and a cut-and-cover tunnel on the transmission of vibration for the frequency range up to 200 Hz.


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    Titel :

    Studies using a combined finite element and boundary element model for vibration propagation from railway tunnels


    Weitere Titelangaben:

    Untersuchung der Schwingungsfortpflanzung aus Eisenbahntunneln mit Hilfe eines kombinierten Finite-Elemente- und Rand-Elemente-Modelles


    Beteiligte:
    Jones, C.J.C. (Autor:in) / Thompson, D.J. (Autor:in) / Petyt, M. (Autor:in)


    Erscheinungsdatum :

    2000


    Format / Umfang :

    8 Seiten, 9 Bilder, 4 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch