In order to further improve the noise reduction effect of highway sound barriers,based on the existing formu-la for calculating the insertion loss of highway sound barriers,the formula for calculating the insertion loss of highway sound barriers was derived considering the sound radiation of the highway sound barrier due to the excitation .Analysis of the cal-culation results shows that the insertion loss of the sound barrier is reduced by 0.9-3.6 dB compared with that without con-sidering the sound radiation.Therefore,the effect of sound radiation on noise reduction should be considered in the design of highway sound barriers.
维普
万方数据