In the last years, different international studies and specific sections of standards were focused on the problem associated to the pressure variations in tunnel due to the train passing. When a high speed train enters a long tunnel, compression wave is generated in front of the train. This compression wave propagates in the tunnel at the speed of sound. When the wave arrives at the end of the tunnel, a pulsed compression wave, called “tunnel micro-pressure wave”, is radiated from the exit. One of the most important requirements of a railway vehicle is the impact, in terms of pressure variation, on passenger comfort during the run in tunnel. In particular, TSI HS RST (2008) and EN14067-5 are the standards which describe the effects produced by the passage of the train running in a tunnel and that provide requirements for test procedure of full-scale measurements and for the analysis of data obtained by measurements. In this paper, an experimental campaign for the measurement of pressure variation at a fixed position in the tunnel during the running of different high-speed trains will be presented. The data obtained by means of in line measurements, and in particular the train-tunnel measured pressure, will be analysed for the different trains in order to evaluate the differences on the pressures produced by the running of each kind of considered train and to assess possible improvement on vehicle shape.

ANALYSIS OF PRESSURE MEASUREMENTS FOR RAILWAY VEHICLES ON TUNNEL

BOCCIOLONE, MARCO FRANCESCO;BUCCA, GIUSEPPE;CHELI, FEDERICO;TOMASINI, GISELLA MARITA
2012

Abstract

In the last years, different international studies and specific sections of standards were focused on the problem associated to the pressure variations in tunnel due to the train passing. When a high speed train enters a long tunnel, compression wave is generated in front of the train. This compression wave propagates in the tunnel at the speed of sound. When the wave arrives at the end of the tunnel, a pulsed compression wave, called “tunnel micro-pressure wave”, is radiated from the exit. One of the most important requirements of a railway vehicle is the impact, in terms of pressure variation, on passenger comfort during the run in tunnel. In particular, TSI HS RST (2008) and EN14067-5 are the standards which describe the effects produced by the passage of the train running in a tunnel and that provide requirements for test procedure of full-scale measurements and for the analysis of data obtained by measurements. In this paper, an experimental campaign for the measurement of pressure variation at a fixed position in the tunnel during the running of different high-speed trains will be presented. The data obtained by means of in line measurements, and in particular the train-tunnel measured pressure, will be analysed for the different trains in order to evaluate the differences on the pressures produced by the running of each kind of considered train and to assess possible improvement on vehicle shape.
13th MINI Conference on VEHICLE SYSTEM DYNAMICS, IDENTIFICATION AND ANOMALIES (VSDIA12)
9789633131022
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/689916
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