THEORETICAL ANALYSIS OF LOW FREQUENCY NOISE RADIATED FROM BRIDGE DUE TO MOVING VEHICLES

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  • 道路橋交通振動に起因する低周波音の理論解析
  • ドウロキョウ コウツウ シンドウ ニ キイン スル テイシュウハオン ノ リロン カイセキ

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Abstract

This study gives an enhanced simulation for low frequency noise considering reflection radiated from bridges due to moving vehicles. The sound pressure level at the observation point is estimated from the velocity of slabs taken from the traffic-induced bridge vibration analysis. The influence of the reflected sound wave at ground is considered in the analysis by using a virtual surface. The analytical results match well with experimental ones. It is observed that assessment of the low frequency noise regarding the sound wave reflected by ground provides better correlation with field-test data. It is noteworthy that both reinforcing end cross beam and increasing thickness of slabs provide reducion of the low frequency noise due to moving vehicles.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 2005 (794), 794_203-794_212, 2005

    Japan Society of Civil Engineers

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