Chapter 3 - Prediction of high-speed railways noise during operating period

Abstract

Prediction methods for high-speed railway noise vary in different countries. In China, an equivalent model of multiple sound sources shall be used to predict the conducting noise of high-speed train with a speed ranging from 200 to 350km/h, where the source intensity shall be expressed by sound power level. Meanwhile, another prediction method, the proportional prediction method, is also employed in lines with train operation noise as the main noise in existing railway reconstruction and expansion projects. Moreover, this chapter introduces Schall 03, a standard method for railway noise prediction in Germany. In addition, the Hokuriku method adopted by Japan, which considers the noise under the vehicle, noise from structures, collector system noise, and aerodynamic noise from the upper part of the vehicle, is also described. Finally, this study also gives the measured noise source intensity of high-speed train running on CRTS III ballastless and ballasted tracks in China.