两种规范推荐公路交通噪声预测模式的准确性分析

从理论层面分析,JTG B03—2006公路交通噪声预测模式反映了不同交通量条件下公路交通噪声的几何发散规律,比HJ2.4—2009模式更准确。运用江苏省和广东省4条公路的交通量和噪声实测数据验证两种模式的准确性发现,当各型车交通量小于300辆/h时,JTG B03—2006模式的准确性明显优于HJ2.4—2009模式;当各型车交通量大于300辆/h时,两种模式的准确性均不足。

Analysis of Accuracy of Two Highway Traffic Noise Prediction Models Recommended in Specifications

In theory,highway traffic noise prediction model of JTG B03- 2006 is superior to the model of HJ2. 4- 2009 because it represents geometric spreading law of highway traffic noise under different situations of vehicle volume. Comparing the two models with monitoring data of vehicle volume and traffic noise of four highways in Jiangsu and Guangdong province, it is found that the accuracy of model of JTG B03- 2006 is superior to model of HJ2. 4- 2009 obviously when the volume of each vehicle is less than 300 vehicle per hour and neither of the two models is accurate when the volume of each vehicle is more than 300 vehicle per hour.