摘要
研究不同倾斜角度声屏障的降噪效果。通过不同情况下接收点的声压级差的对比分析得出,反射型声屏障,采用内侧倾斜式并尽量减小倾斜角可提高降噪量;对于吸收型,直立式和外侧倾斜式降噪效果较好。根据该试验结果,在声屏障的设计及建设中,可以选择具有更佳降噪效果的声屏障结构形式。
Acoustic experiments on sound barrier model of 1/3 scale were made in semi-soundelimination room. The effects of noise reduction for different inclinations of the sound barrier were studied. Comparison and analysis of the sound pressure levels in different conditions show that for the reverberation type barrier, vertical barrier and inward oblique barrier with small inclination angle have better effect of noise reduction than the others. While for the absorption type barrier, vertical type and outwardoblique type are better than the others. According to the results, the designers can choose pertinent type of sound barrier for the best effect of noise reduction.
出处
《噪声与振动控制》
CSCD
北大核心
2009年第3期73-74,89,共3页
Noise and Vibration Control
基金
辽宁省教育厅攻关计划项目(05L035)
关键词
声学
声屏障
模型试验
交通噪声
acoustics
sound barrier
model test
traffic noise
