摘要
研究了适合于城市轨道交通噪声频谱特性的微穿孔板式声屏障 ,通过计算分析确定了孔径、板厚、穿孔率、腔厚等设计参数 ,并采用驻波管法进行了吸声系数的试验 ,验证了吸声效果和共振频率并修正了腔厚 。
In this paper, a new type of sound barrier based on microperforated-panel structure for urban mass transit is investigated. The design parameters are determined by calculation analysis, then the absorption coefficient is measured by method of standing wave tube. The absorption effect is verified and the design parameters are modified.
出处
《铁道劳动安全卫生与环保》
2003年第5期212-214,共3页
Railway Occupational Safety Health & Environmental Protection
