声屏障对不同频段城市交通噪声的隔声效果分析  

Analysis of Sound Insulation Effect of Noise Barriers on Traffic Noise for Different Frequencies in Urban Environments

作　　者：唐松林[1] 

机构地区：[1]江苏省环境监测中心,江苏南京210036

出　　处：《环境科技》2013年第6期43-45,共3页Environmental Science and Technology

摘　　要：对南京市区一高架桥的交通噪声进行了监测。通过提取声压在不同频段的分布,分析了不同高度声屏障对不同频段道路噪声的抑制作用。结果显示,声屏障对于较低楼层的中频段（125-2 000 Hz）噪声有比较好的隔声效果,并且隔声效果受声屏障高度的影响不大。而对于高楼层的噪声,加高声屏障对其有一定的抑制作用。The traffic noise of the highway bridge was monitored in urban environment in Nanjing. The sound pressure levels for different frequencies were obtained from the sound monitoring data. The sound insulation results of noise barriers with different heights were numerically studied for different frequencies. The result showed that for noise with a frequency between 125 - 2 000 Hz, the noise barriers had a good sound insulation effect. The height of the noise barrier only had an influence for the traffic noise at higher floors of roadside buildings.

关 键 词：声屏障 交通噪声 频率 

分 类 号：X5[环境科学与工程—环境工程]