A track-independent vehicle indicator for ground-borne noise and vibration emission classification
A track-independent vehicle indicator for ground-borne noise and vibration emission classification
Ground vibration from railways is increasingly recognised as a source of annoyance to lineside residents. However, in contrast to airborne noise, there are no standard test procedures to quantify the vibration emission of trains. This is compounded by the fact that measurements of vibration are highly sensitive to the properties of the test site. Here, to help overcome this, a ‘track-independent vehicle indicator’ (TVI) is proposed that can be used to classify railway vehicles in terms of their ground-borne noise and vibration emission. Two different formulations of TVI are proposed, one related to feelable ground-borne vibration and the other to ground-borne noise. The proposed TVIs are based on the force density at the railhead, which may be obtained indirectly from measured ground vibration due to train passages together with a measured line source transfer mobility at the test site. Corresponding frequency weightings are defined to mimic the sensitivity of human response to ground vibration or ground-borne noise. Each TVI is a single number quantity, defined as a sum over all relevant frequency bands of the frequency-weighted force densities. The proposed performance classification of different vehicles can be achieved by comparing the relative differences of their TVIs. The force density is chosen as the basis of the TVIs because, in contrast to the vibration levels, it is relatively independent of the test site. Nevertheless, some restrictions should be applied to the site to avoid undue influence from the track or ground properties. A transposition procedure can also be used to convert results to a standard situation to reduce this influence. A series of test cases is used to demonstrate the potential of the TVIs to classify railway vehicles in terms of their ground-borne vibration and noise emission.
Force density, Ground-borne noise and vibration, Hybrid modelling, Railway vehicle classification, Sensitivity analysis
Ntotsios, E.
877c3350-0497-4471-aa97-c101df72e05e
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5
Reumers, P.
4c542eed-6b2b-4581-886a-a31a6cee2885
Degrande, G.
a09a6d7f-7c2a-4afd-831d-121479197948
Bouvet, P.
1c215149-9fd3-4604-a39d-b27d6ee9f6f4
Nélain, B.
9194ffbf-a1a6-4922-bd28-c36a16a91783
5 March 2024
Ntotsios, E.
877c3350-0497-4471-aa97-c101df72e05e
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5
Reumers, P.
4c542eed-6b2b-4581-886a-a31a6cee2885
Degrande, G.
a09a6d7f-7c2a-4afd-831d-121479197948
Bouvet, P.
1c215149-9fd3-4604-a39d-b27d6ee9f6f4
Nélain, B.
9194ffbf-a1a6-4922-bd28-c36a16a91783
Ntotsios, E., Thompson, D.J., Reumers, P., Degrande, G., Bouvet, P. and Nélain, B.
(2024)
A track-independent vehicle indicator for ground-borne noise and vibration emission classification.
Transportation Geotechnics, 45, [101215].
(doi:10.1016/j.trgeo.2024.101215).
Abstract
Ground vibration from railways is increasingly recognised as a source of annoyance to lineside residents. However, in contrast to airborne noise, there are no standard test procedures to quantify the vibration emission of trains. This is compounded by the fact that measurements of vibration are highly sensitive to the properties of the test site. Here, to help overcome this, a ‘track-independent vehicle indicator’ (TVI) is proposed that can be used to classify railway vehicles in terms of their ground-borne noise and vibration emission. Two different formulations of TVI are proposed, one related to feelable ground-borne vibration and the other to ground-borne noise. The proposed TVIs are based on the force density at the railhead, which may be obtained indirectly from measured ground vibration due to train passages together with a measured line source transfer mobility at the test site. Corresponding frequency weightings are defined to mimic the sensitivity of human response to ground vibration or ground-borne noise. Each TVI is a single number quantity, defined as a sum over all relevant frequency bands of the frequency-weighted force densities. The proposed performance classification of different vehicles can be achieved by comparing the relative differences of their TVIs. The force density is chosen as the basis of the TVIs because, in contrast to the vibration levels, it is relatively independent of the test site. Nevertheless, some restrictions should be applied to the site to avoid undue influence from the track or ground properties. A transposition procedure can also be used to convert results to a standard situation to reduce this influence. A series of test cases is used to demonstrate the potential of the TVIs to classify railway vehicles in terms of their ground-borne vibration and noise emission.
Text
TVI_paper_isvr_revised1c
- Accepted Manuscript
Text
1-s2.0-S2214391224000369-main
- Version of Record
More information
Accepted/In Press date: 15 February 2024
e-pub ahead of print date: 19 February 2024
Published date: 5 March 2024
Additional Information:
Funding information:
For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising.
Publisher Copyright:
© 2024 The Author(s)
Keywords:
Force density, Ground-borne noise and vibration, Hybrid modelling, Railway vehicle classification, Sensitivity analysis
Identifiers
Local EPrints ID: 487350
URI: http://eprints.soton.ac.uk/id/eprint/487350
ISSN: 2214-3912
PURE UUID: 28700ea0-4322-4d92-a313-05d16216a60a
Catalogue record
Date deposited: 19 Feb 2024 20:49
Last modified: 27 Apr 2024 01:50
Export record
Altmetrics
Contributors
Author:
P. Reumers
Author:
G. Degrande
Author:
P. Bouvet
Author:
B. Nélain
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
