DEPTH-DEPENDENT SOIL FLUIDIZATION UNDER CYCLIC LOADING- AN EXPERIMENTAL INVESTIGATION

Korkitsuntornsan, W; Indraratna, B; Rujikiatkamjorn, C; Nguyen, TT

DEPTH-DEPENDENT SOIL FLUIDIZATION UNDER CYCLIC LOADING- AN EXPERIMENTAL INVESTIGATION

Korkitsuntornsan, W Indraratna, B Rujikiatkamjorn, C

Nguyen, TT

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Publisher:: Canadian Science Publishing
Publication Type:: Journal Article
Citation:: Canadian Geotechnical Journal, 2022, 0, (ja)
Issue Date:: 2022-12-13

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Field	Value	Language
dc.contributor.author	Korkitsuntornsan, W
dc.contributor.author	Indraratna, B
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.author	Nguyen, TT
dc.date.accessioned	2023-01-17T05:56:36Z
dc.date.available	2023-01-17T05:56:36Z
dc.date.issued	2022-12-13
dc.identifier.citation	Canadian Geotechnical Journal, 2022, 0, (ja)
dc.identifier.issn	0008-3674
dc.identifier.issn	1208-6010
dc.identifier.uri	http://hdl.handle.net/10453/165066
dc.description.abstract	<jats:p> Past studies have shown that shallow subgrade soil can transform to a slurry (i.e., fluidization) under unfavourable cyclic loading. However, the depth-dependent behaviour of soil parameters during this process has not been properly understood. The current study utilised a large-scale cylindrical test rig, where instrumentation was installed to observe the soil behaviour along the depth of the test specimens under cyclic loading, to examine and quantify the onset of soil fluidization. The results show that excess pore water pressure (EPWP) tends to rise more at the upper layers causing zero-effective stress, while void ratio expands rapidly within the deteriorated soil fabric making the water content approach the liquid limit of soil when internal moisture migration occurs from the bottom to the top of specimen. The larger the cyclic load, the deeper the fluidized zone and the faster the fluidization. The study also suggests that the zero-effective stress condition alone cannot interpret the inception of soil fluidization, hence the change in void ratio and the liquidity index during the application of cyclic loading should also be considered in tandem. </jats:p>
dc.language	en
dc.publisher	Canadian Science Publishing
dc.relation	http://purl.org/au-research/grants/arc/LP160101254
dc.relation.ispartof	Canadian Geotechnical Journal
dc.relation.isbasedon	10.1139/cgj-2022-0340
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	DEPTH-DEPENDENT SOIL FLUIDIZATION UNDER CYCLIC LOADING- AN EXPERIMENTAL INVESTIGATION
dc.type	Journal Article
utslib.citation.volume	0
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
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	2023-01-17T05:56:35Z
pubs.issue	ja
pubs.publication-status	Published online
pubs.volume	0
utslib.citation.issue	ja

Abstract:

Past studies have shown that shallow subgrade soil can transform to a slurry (i.e., fluidization) under unfavourable cyclic loading. However, the depth-dependent behaviour of soil parameters during this process has not been properly understood. The current study utilised a large-scale cylindrical test rig, where instrumentation was installed to observe the soil behaviour along the depth of the test specimens under cyclic loading, to examine and quantify the onset of soil fluidization. The results show that excess pore water pressure (EPWP) tends to rise more at the upper layers causing zero-effective stress, while void ratio expands rapidly within the deteriorated soil fabric making the water content approach the liquid limit of soil when internal moisture migration occurs from the bottom to the top of specimen. The larger the cyclic load, the deeper the fluidized zone and the faster the fluidization. The study also suggests that the zero-effective stress condition alone cannot interpret the inception of soil fluidization, hence the change in void ratio and the liquidity index during the application of cyclic loading should also be considered in tandem.

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http://hdl.handle.net/10453/165066