A semi-empirical elasto-plastic constitutive model for coarse-grained materials that incorporates the effects of freeze-thaw cycles

Tian, S; Indraratna, B; Tang, L; Qi, Y; Ling, X

A semi-empirical elasto-plastic constitutive model for coarse-grained materials that incorporates the effects of freeze-thaw cycles

Tian, S Indraratna, B

Tang, L Qi, Y

Ling, X

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Transportation Geotechnics, 2020, 24, pp. 100373-100373
Issue Date:: 2020-09-01

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Field	Value	Language
dc.contributor.author	Tian, S
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Tang, L
dc.contributor.author	Qi, Y https://orcid.org/0000-0002-3486-2130
dc.contributor.author	Ling, X
dc.date.accessioned	2020-10-20T19:26:15Z
dc.date.available	2020-10-20T19:26:15Z
dc.date.issued	2020-09-01
dc.identifier.citation	Transportation Geotechnics, 2020, 24, pp. 100373-100373
dc.identifier.issn	2214-3912
dc.identifier.issn	2214-3912
dc.identifier.uri	http://hdl.handle.net/10453/143413
dc.description.abstract	© 2020 Elsevier Ltd A volume-shear coupling mechanism is imperative for developing high-speed railways in very cold regions. A series of consolidated drained static triaxial experiments were carried out to investigate the effect of freeze-thaw (F-T) cycles on the stress-strain features of coarse-grained materials (CGM) typically used at the bottom layer of subgrade for high-speed rail tracks in China. Mathematical expressions describing the effect of F-T cycles for residual stress state stress ratio, elastic shear modulus, and specific volume have been proposed. Laboratory observations enabled an empirical dilatancy equation to be incorporated in a constitutive model to capture the salient aspects of the monotonic deformation behaviour of CGM including the F-T effects. After comparing with experimental observations and validating through past independent studies, the proposed constitutive model could accurately predict the monotonic shear behaviour of the CGM exposed to F-T cycles.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/IC170100006
dc.relation.ispartof	Transportation Geotechnics
dc.relation.isbasedon	10.1016/j.trgeo.2020.100373
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	0905 Civil Engineering
dc.title	A semi-empirical elasto-plastic constitutive model for coarse-grained materials that incorporates the effects of freeze-thaw cycles
dc.type	Journal Article
utslib.citation.volume	24
utslib.for	0905 Civil Engineering
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	*
dc.date.updated	2020-10-20T19:26:00Z
pubs.publication-status	Published
pubs.volume	24

Abstract:

© 2020 Elsevier Ltd A volume-shear coupling mechanism is imperative for developing high-speed railways in very cold regions. A series of consolidated drained static triaxial experiments were carried out to investigate the effect of freeze-thaw (F-T) cycles on the stress-strain features of coarse-grained materials (CGM) typically used at the bottom layer of subgrade for high-speed rail tracks in China. Mathematical expressions describing the effect of F-T cycles for residual stress state stress ratio, elastic shear modulus, and specific volume have been proposed. Laboratory observations enabled an empirical dilatancy equation to be incorporated in a constitutive model to capture the salient aspects of the monotonic deformation behaviour of CGM including the F-T effects. After comparing with experimental observations and validating through past independent studies, the proposed constitutive model could accurately predict the monotonic shear behaviour of the CGM exposed to F-T cycles.

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http://hdl.handle.net/10453/143413