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Titre du document / Document title

Spectra of low-frequency ground vibrations generated by high-speed trains on layered ground

Auteur(s) / Author(s)

KRYLOV V. V. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Centre for Research into the Built Environment, The Nottingham Trent University, Burton Street, Nottingham NG1 4BU, ROYAUME-UNI

Résumé / Abstract

Increase in speeds of modern railway trains is usually accompanied by higher levels of generated ground vibrations. In the author's earlier paper [V.V. Krylov Applied Acoustics, 44, 149-164 (1995)], it has been shown that especially large increase in vibration level may occur if train speeds v exceed the velocity of Rayleigh surface waves in the ground cR., i.e., v > cR. Such a situation might arise, for example, with French TGV trains for which speeds over 515 km/h have been achieved. The present paper investigates the effect of geological layered structure of the ground on ground vibrations generated by high-speed trains. It is shown that, since Rayleigh wave velocities in layered ground are dispersive and normally increase at lower frequencies associated with deeper penetration of surface wave energy into the ground, the trans-Rayleigh condition v > cR may not hold at very low frequencies. This will cause a noticeable reduction in low-frequency components of generated ground vibration spectra. Theoretical results are illustrated by numerically calculated frequency spectra of ground vibrations generated by single axle loads travelling at different speeds and by TGV or Eurostar high-speed trains.

Revue / Journal Title

Journal of low frequency noise, vibration and active control    ISSN  1461-3484 

Source / Source

1997, vol. 16, no4, pp. 257-270 (1 p.1/4)

Langue / Language

Anglais

Editeur / Publisher

Multi Science, Brentwood, ROYAUME-UNI  (1997) (Revue)

Mots-clés anglais / English Keywords

Soil mechanics

;

Rail vehicle

;

High speed train

;

Stratified medium

;

Vibration

;

Surface wave

;

Rayleigh wave

;

Low frequency

;

Wave dispersion

;

Modeling

;

Green function

;

Mots-clés français / French Keywords

Mécanique sol

;

Véhicule ferroviaire

;

Train TGV

;

Milieu stratifié

;

Vibration

;

Onde surface

;

Onde Rayleigh

;

Basse fréquence

;

Dispersion onde

;

Modélisation

;

Fonction Green

;

Mots-clés espagnols / Spanish Keywords

Mecánica suelo

;

Vehículo ferroviario

;

Tren TGV

;

Medio estratificado

;

Vibración

;

Onda superficie

;

Onda Rayleigh

;

Baja frecuencia

;

Dispersión onda

;

Modelización

;

Función Green

;

Localisation / Location

INIST-CNRS, Cote INIST : 20202, 35400007681555.0040

Nº notice refdoc (ud4) : 2442625



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