Moving loads on a viscoelastic foundation with special reference to railway transition zones

Walker, RTR; Indraratna, B

Moving loads on a viscoelastic foundation with special reference to railway transition zones

Walker, RTR Indraratna, B

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Publisher:: ASCE-AMER SOC CIVIL ENGINEERS
Publication Type:: Journal Article
Citation:: International Journal of Geomechanics, 2018, 18, (11)
Issue Date:: 2018-11-01

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Field	Value	Language
dc.contributor.author	Walker, RTR
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.date.accessioned	2022-09-07T21:42:08Z
dc.date.available	2022-09-07T21:42:08Z
dc.date.issued	2018-11-01
dc.identifier.citation	International Journal of Geomechanics, 2018, 18, (11)
dc.identifier.issn	1532-3641
dc.identifier.issn	1943-5622
dc.identifier.uri	http://hdl.handle.net/10453/161483
dc.description.abstract	At railway transition zones between soft ground and stiffer structures, dynamic actions between the railcar, track, and subgrade induce differential settlements that may cause vibration and noise, compromise ride quality, and incur relatively high maintenance costs. Using a semianalytical spectral Galerkin method, this study attempted to examine stiffness transitions for point loads traveling on a pinned beam resting on a Winkler spring foundation with damping. Generally, a different deflection behavior occurs when moving from stiff-to-soft or soft-to-stiff regions. Multiple loads induce additional oscillatory behavior that is not typical of single loads. This study showed that a minimum transition length of 8-10 times the system's characteristic length appears necessary to avoid stiffness transition deflection spikes. A real rail transition zone taken from a case study in Portugal was also analyzed.
dc.language	English
dc.publisher	ASCE-AMER SOC CIVIL ENGINEERS
dc.relation.ispartof	International Journal of Geomechanics
dc.relation.isbasedon	10.1061/(ASCE)GM.1943-5622.0001274
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	General Mathematics
dc.title	Moving loads on a viscoelastic foundation with special reference to railway transition zones
dc.type	Journal Article
utslib.citation.volume	18
utslib.for	0905 Civil Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
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	*
dc.date.updated	2022-09-07T21:42:07Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	18
utslib.citation.issue	11

Abstract:

At railway transition zones between soft ground and stiffer structures, dynamic actions between the railcar, track, and subgrade induce differential settlements that may cause vibration and noise, compromise ride quality, and incur relatively high maintenance costs. Using a semianalytical spectral Galerkin method, this study attempted to examine stiffness transitions for point loads traveling on a pinned beam resting on a Winkler spring foundation with damping. Generally, a different deflection behavior occurs when moving from stiff-to-soft or soft-to-stiff regions. Multiple loads induce additional oscillatory behavior that is not typical of single loads. This study showed that a minimum transition length of 8-10 times the system's characteristic length appears necessary to avoid stiffness transition deflection spikes. A real rail transition zone taken from a case study in Portugal was also analyzed.

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http://hdl.handle.net/10453/161483