Application of under sleeper pads to enhance the sleeper-ballast interface behaviors

Navaratnarajah, SK; Indraratna, B

Application of under sleeper pads to enhance the sleeper-ballast interface behaviors

Navaratnarajah, SK Indraratna, B

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Publisher:: Springer
Publication Type:: Conference Proceeding
Citation:: Construction in Geotechnical Engineering, 2020, 84, pp. 619-636
Issue Date:: 2020-01-01

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	2020_Bookmatter_ConstructionInGeotechnicalEngi.pdf	Published version	138.68 kB	Adobe PDF	View/Open
	2020 Application of Under Sleeper Pads to Enhance the Sleeper-Ballast Interface Behaviors.pdf	Published version	1.26 MB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Navaratnarajah, SK
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.date	2018-12-13
dc.date.accessioned	2021-02-26T02:11:58Z
dc.date.available	2021-02-26T02:11:58Z
dc.date.issued	2020-01-01
dc.identifier.citation	Construction in Geotechnical Engineering, 2020, 84, pp. 619-636
dc.identifier.isbn	9789811560897
dc.identifier.issn	2366-2557
dc.identifier.issn	2366-2565
dc.identifier.uri	http://hdl.handle.net/10453/146478
dc.description.abstract	© Springer Nature Singapore Pte Ltd 2020. Railway industries are facing greater technical and economic challenges to increase the train speeds and hauling capacity of the trains to cope up with the growing population and increasing traffic problems. However, increasing dynamic stresses from the passage of faster and heavy haul trains progressively degrades the ballast layer and other track substructure layers which inevitably leads to excessive settlement and track instability. Nowadays, heavier concrete sleepers used in most of the ballasted tracks are subjected to even greater stresses and faster deterioration. Under Sleeper Pads (USPs) are resilient pads installed at the bottom face of concrete sleepers to increase the degree of vertical elasticity in the track structure and also with the intention of enhancing sleeper–ballast interaction to minimize dynamic stresses and subsequent track deterioration. In this study, cyclic loads from fast and heavy haul trains have been simulated using a large-scale Process Simulation Prismoidal Triaxial Apparatus (PSPTA) to investigate the performance of ballast improved by the USPs. The laboratory results indicate that the inclusion of USP at the harder interface of concrete sleeper-ballast significantly curtails the stresses transmitted and minimizes the amount of plastic deformation and degradation of ballast.
dc.language	en
dc.publisher	Springer
dc.relation.ispartof	Construction in Geotechnical Engineering
dc.relation.ispartof	Indian Geotechnical Conference
dc.relation.ispartofseries	Lecture Notes in Civil Engineering
dc.relation.isbasedon	10.1007/978-981-15-6090-3_46
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Application of under sleeper pads to enhance the sleeper-ballast interface behaviors
dc.type	Conference Proceeding
utslib.citation.volume	84
utslib.location.activity	Bangalore, India
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
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2021-02-26T02:11:56Z
pubs.finish-date	2018-12-15
pubs.place-of-publication	Singapore
pubs.publication-status	Published
pubs.start-date	2018-12-13
pubs.volume	84
dc.location	Singapore

Abstract:

© Springer Nature Singapore Pte Ltd 2020. Railway industries are facing greater technical and economic challenges to increase the train speeds and hauling capacity of the trains to cope up with the growing population and increasing traffic problems. However, increasing dynamic stresses from the passage of faster and heavy haul trains progressively degrades the ballast layer and other track substructure layers which inevitably leads to excessive settlement and track instability. Nowadays, heavier concrete sleepers used in most of the ballasted tracks are subjected to even greater stresses and faster deterioration. Under Sleeper Pads (USPs) are resilient pads installed at the bottom face of concrete sleepers to increase the degree of vertical elasticity in the track structure and also with the intention of enhancing sleeper–ballast interaction to minimize dynamic stresses and subsequent track deterioration. In this study, cyclic loads from fast and heavy haul trains have been simulated using a large-scale Process Simulation Prismoidal Triaxial Apparatus (PSPTA) to investigate the performance of ballast improved by the USPs. The laboratory results indicate that the inclusion of USP at the harder interface of concrete sleeper-ballast significantly curtails the stresses transmitted and minimizes the amount of plastic deformation and degradation of ballast.

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http://hdl.handle.net/10453/146478