Noise barriers on high speed railway lines: Codes - Calculation - Measurement

摘要

Determination of the aerodynamic impact on noise barriers, generated by high speed train passage is regulated in different codes and guidelines. Beside the EN 1991-2 code the UIC 779-1 guideline and the prEN 16727-2-2 code (which will soon be published) exist on European level. On national level guidelines like the Ril 804.5501 (Germany) or the RVE 04.01.01 (Austria) are used. The presented paper covers the main regulations and shows the differences for determination of the aerodynamic impact and the structural response. Also background information - as far as known on - the different parameters used for calculation will be explained. Also a case study is presented using measurements along a high speed railway line in Austria between 2012 and 2014. Measurements have been conducted using strain gauges and differential pressure sensors to show the aerodynamic impact as well as the structural response of the noise barrier. The evaluated data from the monitoring is compared to the theoretical results from the guidelines. The differences between the guidelines will be discussed and justified.