Modeling and validation of environmental noise sources in Korean railway

초록

An accurate railway environmental noise prediction model is required to make the proper so-lution of the railway noise problems. In this paper, an engineering model for the noise source is presented to predict the railway noise with applying the propagation model of ISO 9613-2. The source consists of the rail source, the wheel source and the residual source components, and their acoustic strengths of Korean railway systems were estimated in octave-band fre-quencies using the rolling noise model and the pass-by noise measurements. The dependency trend of total noise on the train speed was also investigated. Some validation cases show on the average small differences between the predictions of the present model and the measure-ment results.