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Coupled boundary and finite element analysis of vibration from railway tunnels: a comparison of two- and three-dimensional models

Coupled boundary and finite element analysis of vibration from railway tunnels: a comparison of two- and three-dimensional models
Coupled boundary and finite element analysis of vibration from railway tunnels: a comparison of two- and three-dimensional models
The analysis of vibration from railway tunnels is of growing interest as new and higher-speed railways are built under the ground to address the transport problems of growing modern urban areas. Such analysis can be carried out using numerical methods but models and therefore computing times can be large. There is a need to be able to apply very fast calculations that can be used in tunnel design and studies of environmental impacts. Taking advantage of the fact that tunnels often have a two-dimensional geometry in the sense that the cross section is constant along the tunnel axis, it is useful to evaluate the potential uses of two-dimensional models before committing to much more costly three-dimensional approaches. The vibration forces in the track due to the passage of a train are by nature three-dimensional and a complete analysis undoubtedly requires a model of three-dimensional wave propagation. The aim of this paper is to investigate the quality of the information that can be gained from a two-dimensional model of a railway tunnel. The vibration transmission from the tunnel floor to the ground surface is analysed for the frequency range relevant to the perception of whole body vibration (about 4–80 Hz). A coupled finite element and boundary element scheme is applied in both two and three dimensions. Two tunnel designs are considered: a cut-and-cover tunnel for a double track and a single-track tunnel dug with the New Austrian tunnelling method (NATM).
0022-460X
611-625
Andersen, L.
27de7660-f76d-455b-9752-cc3004e29c93
Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301
Andersen, L.
27de7660-f76d-455b-9752-cc3004e29c93
Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301

Andersen, L. and Jones, C.J.C. (2006) Coupled boundary and finite element analysis of vibration from railway tunnels: a comparison of two- and three-dimensional models. Journal of Sound and Vibration, 293 (3-5), 611-625. (doi:10.1016/j.jsv.2005.08.044).

Record type: Article

Abstract

The analysis of vibration from railway tunnels is of growing interest as new and higher-speed railways are built under the ground to address the transport problems of growing modern urban areas. Such analysis can be carried out using numerical methods but models and therefore computing times can be large. There is a need to be able to apply very fast calculations that can be used in tunnel design and studies of environmental impacts. Taking advantage of the fact that tunnels often have a two-dimensional geometry in the sense that the cross section is constant along the tunnel axis, it is useful to evaluate the potential uses of two-dimensional models before committing to much more costly three-dimensional approaches. The vibration forces in the track due to the passage of a train are by nature three-dimensional and a complete analysis undoubtedly requires a model of three-dimensional wave propagation. The aim of this paper is to investigate the quality of the information that can be gained from a two-dimensional model of a railway tunnel. The vibration transmission from the tunnel floor to the ground surface is analysed for the frequency range relevant to the perception of whole body vibration (about 4–80 Hz). A coupled finite element and boundary element scheme is applied in both two and three dimensions. Two tunnel designs are considered: a cut-and-cover tunnel for a double track and a single-track tunnel dug with the New Austrian tunnelling method (NATM).

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Published date: 13 June 2006

Identifiers

Local EPrints ID: 49566
URI: http://eprints.soton.ac.uk/id/eprint/49566
ISSN: 0022-460X
PURE UUID: f2f0ced0-b3d2-4b15-8b90-178ae5d043b8

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Date deposited: 16 Nov 2007
Last modified: 13 Mar 2019 20:54

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Contributors

Author: L. Andersen
Author: C.J.C. Jones

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