Consolidation by Vertical Drains beneath a Circular Embankment under Surcharge and Vacuum Preloading

Baral, P; Indraratna, B; Rujikiatkamjorn, C; Kelly, R; Vincent, P

Consolidation by Vertical Drains beneath a Circular Embankment under Surcharge and Vacuum Preloading

Baral, P Indraratna, B

Rujikiatkamjorn, C

Kelly, R Vincent, P

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Publisher:: American Society of Civil Engineers (ASCE)
Publication Type:: Journal Article
Citation:: Journal of Geotechnical and Geoenvironmental Engineering, 2021, 147, (8), pp. 05021004
Issue Date:: 2021-08-01

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Field	Value	Language
dc.contributor.author	Baral, P
dc.contributor.author	Indraratna, B https://orcid.org/0000-0002-9057-1514
dc.contributor.author	Rujikiatkamjorn, C https://orcid.org/0000-0001-8625-2839
dc.contributor.author	Kelly, R
dc.contributor.author	Vincent, P
dc.date.accessioned	2022-04-10T01:14:34Z
dc.date.available	2022-04-10T01:14:34Z
dc.date.issued	2021-08-01
dc.identifier.citation	Journal of Geotechnical and Geoenvironmental Engineering, 2021, 147, (8), pp. 05021004
dc.identifier.issn	1090-0241
dc.identifier.issn	1943-5606
dc.identifier.uri	http://hdl.handle.net/10453/156008
dc.description.abstract	A membrane-type vacuum consolidation system, including surcharge loading and prefabricated vertical drains, was applied to rapidly consolidate soft clay beneath a circular embankment located at the National Field Testing Facility (NFTF) at Ballina, New South Wales (NSW), Australia. Most previous studies were devoted to multidrain systems corresponding to an embankment strip loading in two-dimensional (2D) plane strain. So far, no case study has been investigated using vacuum consolidation via prefabricated vertical drains (PVDs) beneath a circular loaded area, where the system conforms to an axisymmetric problem. This paper outlines the site investigation, construction technique, and installation of a suite of instrumentation on this circular embankment. It also describes and discusses consolidation during and after the construction of this embankment in terms of settlement, excess pore water pressure, lateral deformation, and water flow relationships as they pertain to prediction embankment with vertical drains and surcharge only. The case study demonstrates that a loss of vacuum pressure can be prevented using the proposed approach in a membrane system. Treatment of water extracted using the vacuum consolidation technique, especially in acid-sulfate terrain, is also presented.
dc.language	en
dc.publisher	American Society of Civil Engineers (ASCE)
dc.relation.ispartof	Journal of Geotechnical and Geoenvironmental Engineering
dc.relation.isbasedon	10.1061/(ASCE)GT.1943-5606.0002576
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Consolidation by Vertical Drains beneath a Circular Embankment under Surcharge and Vacuum Preloading
dc.type	Journal Article
utslib.citation.volume	147
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	closed_access	*
dc.date.updated	2022-04-10T01:14:32Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	147
utslib.citation.issue	8

Abstract:

A membrane-type vacuum consolidation system, including surcharge loading and prefabricated vertical drains, was applied to rapidly consolidate soft clay beneath a circular embankment located at the National Field Testing Facility (NFTF) at Ballina, New South Wales (NSW), Australia. Most previous studies were devoted to multidrain systems corresponding to an embankment strip loading in two-dimensional (2D) plane strain. So far, no case study has been investigated using vacuum consolidation via prefabricated vertical drains (PVDs) beneath a circular loaded area, where the system conforms to an axisymmetric problem. This paper outlines the site investigation, construction technique, and installation of a suite of instrumentation on this circular embankment. It also describes and discusses consolidation during and after the construction of this embankment in terms of settlement, excess pore water pressure, lateral deformation, and water flow relationships as they pertain to prediction embankment with vertical drains and surcharge only. The case study demonstrates that a loss of vacuum pressure can be prevented using the proposed approach in a membrane system. Treatment of water extracted using the vacuum consolidation technique, especially in acid-sulfate terrain, is also presented.

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http://hdl.handle.net/10453/156008