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Experimental study of the treatment measures for rail corrugation on tracks with Egg fasteners track in the Beijing metro

Experimental study of the treatment measures for rail corrugation on tracks with Egg fasteners track in the Beijing metro
Experimental study of the treatment measures for rail corrugation on tracks with Egg fasteners track in the Beijing metro
Rail corrugation occurring on tracks fitted with Egg fasteners has become a serious problem on the newly operated lines of the Beijing metro in recent years. Investigations and field measurements show that the dominant wavelengths of corrugation are 63–100 mm, inducing dominant frequencies of vibration on the rail in the frequency range of 160–310 Hz for train speeds at 60–70 km/h. Due to the influence of the dynamic behaviour of tracks on the formation of rail corrugation, various options for changing the dynamic behaviour of the track structure can be considered as possible solutions to treat corrugation. Four treatment measures have been considered: rail grinding, adding a rubber pad within the fastener, replacing the fastener with a compression-type fastener, and installing rail dampers on the rail. Field experiments have been carried out to evaluate the effectiveness of these rail corrugation treatment measures on two lines of the Beijing metro. Frequency response functions, track decay rates, and pass-by acceleration on the rail were measured, and the development of rail roughness was monitored. Experimental results show that all the four measures are effective to control or at least slow down the development of rail corrugation on tracks with Egg fastener. Rail grinding is mostly used to limit the effects of corrugation; here, it was noted that low-amplitude corrugation on some straight lines did not reappear after rail grinding. After adding a rubber pad within the fastener, the existing corrugation reduced in amplitude, while corrugation did not reappear on a newly ground rail. Replacing the fastener with a compression-type fastener and installing rail dampers on the rail were found to slow down the development of corrugation.
0954-4097
Liu, Weifeng
352b9b48-0026-45a3-af9f-281614be9792
Zhang, Hougui
fff0a233-3371-46c4-bd3b-52a38d753aea
Liu, Weining
375af0a5-1dea-4ce2-9107-53e1aa8d6660
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Liu, Weifeng
352b9b48-0026-45a3-af9f-281614be9792
Zhang, Hougui
fff0a233-3371-46c4-bd3b-52a38d753aea
Liu, Weining
375af0a5-1dea-4ce2-9107-53e1aa8d6660
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5

Liu, Weifeng, Zhang, Hougui, Liu, Weining and Thompson, David (2017) Experimental study of the treatment measures for rail corrugation on tracks with Egg fasteners track in the Beijing metro. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. (doi:10.1177/0954409717721635).

Record type: Article

Abstract

Rail corrugation occurring on tracks fitted with Egg fasteners has become a serious problem on the newly operated lines of the Beijing metro in recent years. Investigations and field measurements show that the dominant wavelengths of corrugation are 63–100 mm, inducing dominant frequencies of vibration on the rail in the frequency range of 160–310 Hz for train speeds at 60–70 km/h. Due to the influence of the dynamic behaviour of tracks on the formation of rail corrugation, various options for changing the dynamic behaviour of the track structure can be considered as possible solutions to treat corrugation. Four treatment measures have been considered: rail grinding, adding a rubber pad within the fastener, replacing the fastener with a compression-type fastener, and installing rail dampers on the rail. Field experiments have been carried out to evaluate the effectiveness of these rail corrugation treatment measures on two lines of the Beijing metro. Frequency response functions, track decay rates, and pass-by acceleration on the rail were measured, and the development of rail roughness was monitored. Experimental results show that all the four measures are effective to control or at least slow down the development of rail corrugation on tracks with Egg fastener. Rail grinding is mostly used to limit the effects of corrugation; here, it was noted that low-amplitude corrugation on some straight lines did not reappear after rail grinding. After adding a rubber pad within the fastener, the existing corrugation reduced in amplitude, while corrugation did not reappear on a newly ground rail. Replacing the fastener with a compression-type fastener and installing rail dampers on the rail were found to slow down the development of corrugation.

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Weifeng Liu_corrugation_as_submitted - Accepted Manuscript
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Accepted/In Press date: 18 June 2017
e-pub ahead of print date: 23 July 2017

Identifiers

Local EPrints ID: 413806
URI: http://eprints.soton.ac.uk/id/eprint/413806
ISSN: 0954-4097
PURE UUID: 451a660f-437f-4892-a79b-558597bd927e
ORCID for David Thompson: ORCID iD orcid.org/0000-0002-7964-5906

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Date deposited: 06 Sep 2017 16:31
Last modified: 16 Mar 2024 05:35

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Contributors

Author: Weifeng Liu
Author: Hougui Zhang
Author: Weining Liu
Author: David Thompson ORCID iD

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