多孔降噪沥青路面研究

Research on porous noise reduction asphalt pavement

文章介绍了多孔降噪沥青路面的降噪机理;分析了我国某高速多孔排水降噪沥青路面的降噪效果,得出路面-轮胎噪音消散的主要因素是物理空隙、级配特征;研究了多孔降噪沥青路面的结构,并利用国外公式预估了多孔降噪沥青路面的降噪效果。表明采用多孔降噪沥青路面可使道路交通噪声降低4dB(A)。

This paper presents noise reduction mechanism of porous noise asphalt pavement. Major factors of pavement tire noise dissipating are physical void and gradation characteristics by analyzing the noise reduction effect of the porous drainage noise reduction asphalt pavement of a highway in China. In addition, the pavement structure of porous noise asphalt pavement is studied, and the foreign formula is used to predict the noise reduc- tion effect of porous noise asphalt pavement. The results show that road traffic noise can be reduced 4 dB（A） by paving the porous noise reduction asphalt pavement.