公路隧道内交通噪声预测  

Traffic Noise Prediction inside Highway Tunnels

作　　者：史小丽[1] 王选仓[1] 贾奇英[2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]辽河石油勘探局筑路工程公司,辽宁盘锦124101

出　　处：《公路交通科技》2010年第2期147-151,共5页Journal of Highway and Transportation Research and Development

基　　金：河北省交通科技项目(Y-060249)

摘　　要：为合理预测公路隧道内交通噪声传播状况,界定了公路隧道内的长空间声场特性,系统阐述了3种基于像源理论的交通噪声预测模型,通过在实体隧道中测定声源分别为低频和高频、接收者在不同位置时的噪声值,并将其与三种理论模型预测值进行对比,结果表明:相干模型在低、中、高频范围内比不相干模型和ASJ模型能更精确地预测隧道内噪声传播状况,其预测值与实测值误差在2dB左右;而不相干模型和ASJ模型仅可用于预测高频段时噪声的平均值。可见,相干模型是预测以中低频为主的公路隧道内交通噪声传播的合理模型,该预测模型可用于进行公路隧道内降噪优化设计。In order to reasonably predict traffic noise transmission inside highway tunnels, the long enclosure sound field characteristic was defined and three traffic noise predietion models based on image source theory was put forward. Measurements were executed in a certain tunnel with low-frequency and high-frequency sound source respectively and the receiver situated at different locations, which were compared with the three theoretical model prediction results. Analysis result shows that （1） coherent model is more accurate to prediet noise propagation than incoherent model and Acoustical Society of Japan （AS J） model at low, medium and high frequencies with an average error of 2 dB to the measured values; （2） the incoherent and ASJ model can only predict the average noise at high frequency. Obviously, the coherent model is suitable to predict low and medium frequency traffic noise inside highway tunnels and it could be used to optimize noise reduction design.

关 键 词：环境工程 交通噪声 预测模型 公路隧道 噪声降低值 

分 类 号：X593[环境科学与工程—环境工程]