The prediction of re-radiated structure-borne sound in large, complex buildings is a difficult task. Methods to do so exist from simple analytical formulae to full-size detailed numerical analysis of vibrations and re-radiated noise. Nevertheless, designers need an effective, practicable method to ensure that the interior noise of buildings planned above or in the vicinity of metro lines do meet the relevant limit values and to decide whether or not building base isolation is required. The paper summarizes a number of experiments performed in large portal frame buildings consisting of simultaneous vibration and noise measurements. It was established that the accuracy of the well-known Kurzweil formula [3] is highly limited: the difference between measured and predicted sound pressure values is frequency dependent with positive values for low and negative values for higher frequencies, and the standard deviation of the predictions is high. The experimental findings were pursued by numerical calculations for a very simple model, consisting of various typical wall and floor slab materials and dimensions. It was found that the positive difference for low frequencies is mainly caused by weak fluid-structure coupling. The large spread is related to the highly modal behavior of both the involved structures and the acoustic field, resulting in strongly frequency-dependent sound radiation from the surrounding surfaces. As a result, an improved prediction formula is proposed on the basis of the comparison of measured and simulated difference curves.


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    Title :

    Prediction of Structure-Borne Sound in Buildings Consisting of Various Building Elements, Generated by Underground Rail Traffic


    Additional title:

    Notes Numerical Fluid Mech.




    Publication date :

    2021-04-09


    Size :

    9 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English





    Prediction of Structure-Borne Sound in Buildings Consisting of Various Building Elementsm Generated by Underground Rail Traffic

    Augusztinovicz, Fülöp / Nagy, A. B. / Fiala, P. et al. | British Library Conference Proceedings | 2021




    Structure-borne sound and vibration from rail traffic

    Heckl, M. / Hauck, G. / Wettschureck, R. | Tema Archive | 1996