基于声辐射理论的声屏障插入损失研究  

Sound Barrier Insertion Loss Based on Sound Radiation Theory

作　　者：朱从云[1] 王正大 丁国芳[1] 黄其柏[2] ZHU Congyun;WANG Zhengda;DING Guofang;HUANG Qibai(School of Mechatronics Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]中原工学院机电学院,郑州450007 [2]华中科技大学机械科学与工程学院,武汉430074

出　　处：《噪声与振动控制》2024年第6期273-277,共5页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51705545,15A460041)。

摘　　要：为进一步提升公路声屏障的降噪效果,在当前存在的公路声屏障插入损失计算公式的基础上,考虑公路声屏障受到激励后产生声辐射的现象,推导出考虑声辐射时公路声屏障插入损失计算公式。对计算结果进行分析可得,声屏障的插入损失比不考虑声辐射的情况下降低0.9~3.6 dB。因此在设计公路声屏障应当考虑声屏障声辐射对降噪效果的影响。In order to further improve the noise reduction effect of highway sound barriers,based on the existing formula 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 calculation results shows that the insertion loss of the sound barrier is reduced by 0.9-3.6 dB compared with that without considering the sound radiation.Therefore,the effect of sound radiation on noise reduction should be considered in the design of highway sound barriers.

关 键 词：声学 声屏障 声辐射 插入损失 虚声源 MATLAB 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程] TB53[理学—物理]