Abstract Summary
Noise barriers, that are built parallel to the railway to reduce the noise pollution, will be subjected to strong and transient aerodynamic pressure from the trains running with high speed and have the significant dynamic responses under such pressure. Geometric of high-speed trains, especially for the shape of train head, is an important factor influencing the amplitude of aerodynamic pressure. In this study, based on the computational fluid dynamics (CFD) method, the numerical simulation of aerodynamic pressure on noise barriers caused by high-speed trains was performed and validated by field data from other studies. Then, the distribution along height and length directions of such pressure on surface of noise barriers from Swedish trains, which have a different geometric design from other countries, was ana-lyzed, and the effect of different factors on results, e.g., the train speed, the distance from noise barriers to the center of track and height of noise barrier, was discussed. Finally, the results obtained by CFD simulation were compared with the existing pressure model from Standard EN 14067-4 to adapt this load model and calculation method to Swedish high-speed trains.
