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Vibrational impact of high-speed trains. I. Effect of track dynamics

By Victor V. Krylov

Abstract

This article was published in the serial Journal of the Acoustical Society of America [© Acoustical Society of America].The dramatic increase in speeds of modern passenger trains makes it important to consider the\ud vibrational impact of such trains on the built environment. In the author’s earlier paper in which a\ud quasistatic approach to the calculation of track deflection curves had been used @V. V. Krylov, Appl.\ud Acoust. 44, 149–164 ~1995!#, it had been shown that a very large increase in generated ground\ud vibration level ~about 70 dB, as compared to conventional trains! may occur if train speed exceeds\ud the velocity of Rayleigh surface waves in the ground. Such a situation might arise, for example, with\ud French TGV trains for which speeds over 515 km/h have been achieved. The present paper\ud investigates the effect of track bending waves propagating in the system track/ground on\ud railway-generated ground vibrations. It is shown that for train speeds approaching the minimal\ud phase velocity of bending waves the level of generated ground vibrations is reduced. Theoretical\ud results are illustrated by numerically calculated frequency spectra of ground vibrations generated by\ud single axle loads traveling at different speeds and by TGV or Eurostar high-speed trains

Publisher: © Acoustical Society of America
Year: 1996
OAI identifier: oai:dspace.lboro.ac.uk:2134/10044
Journal:

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