A 2.5 D finite element and boundary element model for the ground vibration from trains in tunnels and validation using measurement data
A 2.5 D finite element and boundary element model for the ground vibration from trains in tunnels and validation using measurement data
A numerical model is presented for the ground-borne vibration produced by trains running in tunnels. The model makes use of the assumption that the geometry and material properties are invariant in the axial direction. It is based on the so-called two-and-a-half dimensional (2.5D) coupled Finite Element and Boundary Element methodology, in which a two-dimensional cross-section is discretised into finite elements and boundary elements and the third dimension is represented by a Fourier transform over wavenumbers. The model is applied to a particular case of a metro line built with a cast-iron tunnel lining. An equivalent continuous model of the tunnel is developed to allow it to be readily implemented in the 2.5D framework. The tunnel structure and the track are modelled using solid and beam finite elements while the ground is modelled using boundary elements. The 2.5D track-tunnel-ground model is coupled with a train consisting of several vehicles, which are represented by multi-body models. The response caused by the passage of a train is calculated as the sum of the dynamic component, excited by the combined rail and wheel roughness, and the quasi-static component, induced by the constant moving axle loads. Field measurements have been carried out to provide experimental validation of the model. These include measurements of the vibration of the rail, the tunnel invert and the tunnel wall. In addition, simultaneous measurements were made on the ground surface above the tunnel. Rail roughness and track characterisation measurements were also made. The prediction results are compared with measured vibration obtained during train passages, with good agreement.
373-389
Jin, Qiyun
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Thompson, David J.
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Lurcock, Daniel E.J.
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Toward, Martin G.R.
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Ntotsios, Evangelos
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26 May 2018
Jin, Qiyun
11ca2e62-580e-4ce5-807e-4a42632d4d15
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Lurcock, Daniel E.J.
84050d36-bf4a-4257-9fb9-c115066aab57
Toward, Martin G.R.
1d10e993-e6ef-449d-bccb-1f8198169bee
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Jin, Qiyun, Thompson, David J., Lurcock, Daniel E.J., Toward, Martin G.R. and Ntotsios, Evangelos
(2018)
A 2.5 D finite element and boundary element model for the ground vibration from trains in tunnels and validation using measurement data.
Journal of Sound and Vibration, 422, .
(doi:10.1016/j.jsv.2018.02.019).
Abstract
A numerical model is presented for the ground-borne vibration produced by trains running in tunnels. The model makes use of the assumption that the geometry and material properties are invariant in the axial direction. It is based on the so-called two-and-a-half dimensional (2.5D) coupled Finite Element and Boundary Element methodology, in which a two-dimensional cross-section is discretised into finite elements and boundary elements and the third dimension is represented by a Fourier transform over wavenumbers. The model is applied to a particular case of a metro line built with a cast-iron tunnel lining. An equivalent continuous model of the tunnel is developed to allow it to be readily implemented in the 2.5D framework. The tunnel structure and the track are modelled using solid and beam finite elements while the ground is modelled using boundary elements. The 2.5D track-tunnel-ground model is coupled with a train consisting of several vehicles, which are represented by multi-body models. The response caused by the passage of a train is calculated as the sum of the dynamic component, excited by the combined rail and wheel roughness, and the quasi-static component, induced by the constant moving axle loads. Field measurements have been carried out to provide experimental validation of the model. These include measurements of the vibration of the rail, the tunnel invert and the tunnel wall. In addition, simultaneous measurements were made on the ground surface above the tunnel. Rail roughness and track characterisation measurements were also made. The prediction results are compared with measured vibration obtained during train passages, with good agreement.
Text
A 2.5D finite element and boundary element model for the ground vibration from trains in tunnels and validation using measurement data
- Accepted Manuscript
More information
Accepted/In Press date: 10 February 2017
e-pub ahead of print date: 19 March 2018
Published date: 26 May 2018
Additional Information:
© 2018 Published by Elsevier Ltd.v
Identifiers
Local EPrints ID: 418328
URI: http://eprints.soton.ac.uk/id/eprint/418328
ISSN: 0022-460X
PURE UUID: 776f7554-e7fa-4d28-91f8-52d446765319
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Date deposited: 28 Feb 2018 17:30
Last modified: 16 Mar 2024 06:15
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Contributors
Author:
Qiyun Jin
Author:
Daniel E.J. Lurcock
Author:
Martin G.R. Toward
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