engleski

Analysis of railway track dynamic properties for pass by noise measurements

Noise produced by passing railway vehicles can have a negative impact on its surroundings. Thus all new and renewed railway vehicles in the European Union are subjected to noise emission regulations described in the Technical Specifications for Interoperability, chapter noise (TSI Noise). Critical component of railway noise on conventional railway lines is the noise produced by the wheel – rail interaction, which greatly depends on the state of the railway track itself. In order to evaluate the railway track as suitable for typical noise measurements of rail vehicles, it has to accommodate certain European standards prescribed by the TSI Noise. Since 2011, TSI Noise included EN 15461:2008 standard for measuring track dynamic properties. This paper provides analysis of dynamic properties of a newly reconstructed railway track on a section of railway line M201 (SB – Botovo – Dugo Selo) in Croatia. It is a first measurement of this kind on Croatian Railways which provided preliminary results for further measurements of track decay rates. Beside the FRF analysis according to the standard, further analysis of noise and vibrations provided valuable information on rail resonant frequency.

track decay; noise attenuation; track dynaimc properties; vibrations

nije evidentirano