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A numerical model for calculating vibration from a railway tunnel embedded in a full-space

A numerical model for calculating vibration from a railway tunnel embedded in a full-space
A numerical model for calculating vibration from a railway tunnel embedded in a full-space
Vibration generated by underground railways transmits to nearby buildings causing annoyance to inhabitants and malfunctioning to sensitive equipment. Vibration can be isolated through countermeasures by reducing the stiffness of railpads, using floating-slab tracks and/or supporting buildings on springs. Modelling of vibration from underground railways has recently gained more importance on account of the need to evaluate accurately the performance of vibration countermeasures before these are implemented.

This paper develops an existing model, reported by Forrest and Hunt, for calculating vibration from underground railways. The model, known as the Pipe-in-Pipe model, has been developed in this paper to account for anti-symmetrical inputs and therefore to model tangential forces at the tunnel wall. Moreover, three different arrangements of supports are considered for floating-slab tracks, one which can be used to model directly-fixed slabs. The paper also investigates the wave-guided solution of the track, the tunnel, the surrounding soil and the coupled system. It is shown that the dynamics of the track have significant effect on the results calculated in the wavenumber–frequency domain and therefore an important role on controlling vibration from underground railways.
0022-460X
401-431
Hussein, M.F.M.
3535c131-1710-4edc-a4a1-8fe67dee3f67
Hunt, H.E.M.
00743f03-05d5-4a74-bd25-96cd0679f808
Hussein, M.F.M.
3535c131-1710-4edc-a4a1-8fe67dee3f67
Hunt, H.E.M.
00743f03-05d5-4a74-bd25-96cd0679f808

Hussein, M.F.M. and Hunt, H.E.M. (2007) A numerical model for calculating vibration from a railway tunnel embedded in a full-space. Journal of Sound and Vibration, 305 (3), 401-431. (doi:10.1016/j.jsv.2007.03.068).

Record type: Article

Abstract

Vibration generated by underground railways transmits to nearby buildings causing annoyance to inhabitants and malfunctioning to sensitive equipment. Vibration can be isolated through countermeasures by reducing the stiffness of railpads, using floating-slab tracks and/or supporting buildings on springs. Modelling of vibration from underground railways has recently gained more importance on account of the need to evaluate accurately the performance of vibration countermeasures before these are implemented.

This paper develops an existing model, reported by Forrest and Hunt, for calculating vibration from underground railways. The model, known as the Pipe-in-Pipe model, has been developed in this paper to account for anti-symmetrical inputs and therefore to model tangential forces at the tunnel wall. Moreover, three different arrangements of supports are considered for floating-slab tracks, one which can be used to model directly-fixed slabs. The paper also investigates the wave-guided solution of the track, the tunnel, the surrounding soil and the coupled system. It is shown that the dynamics of the track have significant effect on the results calculated in the wavenumber–frequency domain and therefore an important role on controlling vibration from underground railways.

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More information

e-pub ahead of print date: 15 June 2007
Published date: 21 August 2007
Organisations: Dynamics Group

Identifiers

Local EPrints ID: 354583
URI: http://eprints.soton.ac.uk/id/eprint/354583
ISSN: 0022-460X
PURE UUID: ab796564-001d-43e9-8074-3624b06ead45

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Date deposited: 21 Oct 2013 11:11
Last modified: 27 Apr 2022 04:10

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Contributors

Author: M.F.M. Hussein
Author: H.E.M. Hunt

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