Track geomechanics for future railways: use of artificial inclusions

Indraratna, B; Ngo, T; Qi, Y; Rujikiatkamjorn, C

Track geomechanics for future railways: use of artificial inclusions

Indraratna, B

Ngo, T Qi, Y

Rujikiatkamjorn, C

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Publisher:: Springer International Publishing
Publication Type:: Conference Proceeding
Citation:: Lecture Notes in Civil Engineering, 2021, 165, pp. 139-154
Issue Date:: 2021-07-29

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	ICTG2020_Indraratna_Track Geomechanics for Future Railways.pdf	Accepted version	2.83 MB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Ngo, T
dc.contributor.author	Qi, Y https://orcid.org/0000-0002-3486-2130
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.date	2021-05-23
dc.date.accessioned	2022-02-16T00:07:18Z
dc.date.available	2022-02-16T00:07:18Z
dc.date.issued	2021-07-29
dc.identifier.citation	Lecture Notes in Civil Engineering, 2021, 165, pp. 139-154
dc.identifier.isbn	9783030772338
dc.identifier.issn	2366-2557
dc.identifier.issn	2366-2565
dc.identifier.uri	http://hdl.handle.net/10453/154561
dc.description.abstract	Given that current ballasted tracks cannot support faster and heavier Australian heavy freight trains, the need to develop innovative and sustainable ballasted tracks for transport infrastructure is crucial. This paper reviews and discusses the use of artificial inclusions such as recycled rubber mats, end-of-life tyres, and geogrids to stabilize ballasted rail tracks overlying soft formation soil. It also presents a novel solution for increasing the stability and resiliency of track structure by energy-absorbing recycled rubber tyres. This study confirms that a capping layer confined by tyres will actively reduce ballast breakage within the track substructure. Numerical simulations employing discrete element method (DEM) are also carried out to study the micro-mechanical aspects of ballast aggregates and the interaction between the particles and inclusions. This study shows that waste rubber products and geosynthetics will eliminate the need for a capping layer in certain terrain and help to decrease the thickness of the ballast layer. The outcomes of this study will lead to a better understanding of the performance of ballast tracks reinforced with artificial inclusions and also help to improve the design and cost-effectiveness of ballasted tracks, with a view to enhancing passenger comfort and safety.
dc.language	en
dc.publisher	Springer International Publishing
dc.relation	http://purl.org/au-research/grants/arc/IC170100006
dc.relation.ispartof	Lecture Notes in Civil Engineering
dc.relation.ispartof	4th International Conference on Transportation Geotechnics (ICGT2020)
dc.relation.isbasedon	10.1007/978-3-030-77234-5_12
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Track geomechanics for future railways: use of artificial inclusions
dc.type	Conference Proceeding
utslib.citation.volume	165
utslib.location.activity	Chicago, Illinois, USA
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	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-02-16T00:07:01Z
pubs.finish-date	2021-05-26
pubs.publication-status	Accepted
pubs.start-date	2021-05-23
pubs.volume	165

Abstract:

Given that current ballasted tracks cannot support faster and heavier Australian heavy freight trains, the need to develop innovative and sustainable ballasted tracks for transport infrastructure is crucial. This paper reviews and discusses the use of artificial inclusions such as recycled rubber mats, end-of-life tyres, and geogrids to stabilize ballasted rail tracks overlying soft formation soil. It also presents a novel solution for increasing the stability and resiliency of track structure by energy-absorbing recycled rubber tyres. This study confirms that a capping layer confined by tyres will actively reduce ballast breakage within the track substructure. Numerical simulations employing discrete element method (DEM) are also carried out to study the micro-mechanical aspects of ballast aggregates and the interaction between the particles and inclusions. This study shows that waste rubber products and geosynthetics will eliminate the need for a capping layer in certain terrain and help to decrease the thickness of the ballast layer. The outcomes of this study will lead to a better understanding of the performance of ballast tracks reinforced with artificial inclusions and also help to improve the design and cost-effectiveness of ballasted tracks, with a view to enhancing passenger comfort and safety.

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http://hdl.handle.net/10453/154561