Near-field vibrations in railway track on soft subgrades for semi high-speed trains

Beena, KS; Sandeep, MN; Indraratna, B; Malisetty, RS

Near-field vibrations in railway track on soft subgrades for semi high-speed trains

Beena, KS Sandeep, MN Indraratna, B

Malisetty, RS

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Transportation Engineering, 2023, 12, pp. 100176
Issue Date:: 2023-06-01

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Field	Value	Language
dc.contributor.author	Beena, KS
dc.contributor.author	Sandeep, MN
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-2346-8250
dc.contributor.author	Malisetty, RS
dc.date.accessioned	2023-12-18T05:02:55Z
dc.date.available	2023-12-18T05:02:55Z
dc.date.issued	2023-06-01
dc.identifier.citation	Transportation Engineering, 2023, 12, pp. 100176
dc.identifier.issn	2666-691X
dc.identifier.issn	2666-691X
dc.identifier.uri	http://hdl.handle.net/10453/173854
dc.description.abstract	For the development of a high-speed rail network in urbanised areas, ground vibration and associated damage to surrounding structures are major concerns. The problem becomes critical especially in areas with soft soil deposits due to amplification of vibration during Rayleigh wave propagation. In the present study, near field ground vibrations from a high-speed rail ballasted track are predicted for an area which contains predominantly soft marine clay deposits. A two-dimensional finite element model coupled with infinite boundaries is developed in ABAQUS. Using the finite element model, the vibration in terms of peak particle velocity (PPV) and root mean square (RMS) velocity is determined for different train speeds and soil profiles, at varying distances from the track centre. Different soil profiles are considered in this study by varying the thickness and depth of the soft clay layer. From the results, it was observed that maximum ground vibration happens when the train speed is close to the Rayleigh velocity of the soft clay layer. Further, the safe limits for residential and sensitive structures are determined for different conditions based on peak particle velocity. Considering human discomfort during vibration propagation, the vibration level in decibel scale is determined for different track configurations.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Transportation Engineering
dc.relation.isbasedon	10.1016/j.treng.2023.100176
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Near-field vibrations in railway track on soft subgrades for semi high-speed trains
dc.type	Journal Article
utslib.citation.volume	12
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2023-12-18T05:02:52Z
pubs.publication-status	Published
pubs.volume	12

Abstract:

For the development of a high-speed rail network in urbanised areas, ground vibration and associated damage to surrounding structures are major concerns. The problem becomes critical especially in areas with soft soil deposits due to amplification of vibration during Rayleigh wave propagation. In the present study, near field ground vibrations from a high-speed rail ballasted track are predicted for an area which contains predominantly soft marine clay deposits. A two-dimensional finite element model coupled with infinite boundaries is developed in ABAQUS. Using the finite element model, the vibration in terms of peak particle velocity (PPV) and root mean square (RMS) velocity is determined for different train speeds and soil profiles, at varying distances from the track centre. Different soil profiles are considered in this study by varying the thickness and depth of the soft clay layer. From the results, it was observed that maximum ground vibration happens when the train speed is close to the Rayleigh velocity of the soft clay layer. Further, the safe limits for residential and sensitive structures are determined for different conditions based on peak particle velocity. Considering human discomfort during vibration propagation, the vibration level in decibel scale is determined for different track configurations.

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http://hdl.handle.net/10453/173854