对美国FHWA公路噪声预测模式的深入讨论

美国ＦＨＷＡ公路噪声预测模式在我国被广为应用，甚至有各种修正模式，但因对原模式的理论依据仍缺少了解，以至在实际应用过程中或对原模式进行修正时诸如参数的选择及计算、模式适用范围等出现了不当或错误现象。本文从理论上对ＦＨＷＡ公路噪声预测模式进行了深入分析、进而讨论了各参数的物理意义、模式的适用范围，并提供了二种特殊情况下公路噪声的预测模式。

FURTHER DISCUSSION IN US/FHWA HIGHWAY NOISE PREDICTION MODEL

The US FHWA highway noise prediction model (the Model) has been widely applied and there are some modified models in China. However, due to lack of full understanding the theoretical bases on which the Model exists, there are misuses of the model itself, or incorrect option of the parameters. Theoretical analysis on the model and the definition of the parameters, scope of the model application and the modified models in special cases are provided in this paper.