Model test and theoretical analysis for soft soil foundations improved by prefabricated vertical drains

Deng, YB; Liu, GB; Indraratna, B; Rujikiatkamjorn, C; Xie, KH

Model test and theoretical analysis for soft soil foundations improved by prefabricated vertical drains

Deng, YB Liu, GB Indraratna, B

Rujikiatkamjorn, C

Xie, KH

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Publisher:: American Society of Civil Engineers
Publication Type:: Journal Article
Citation:: International Journal of Geomechanics, 2017, 17, (1), pp. 1-12
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Deng, YB
dc.contributor.author	Liu, GB
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	Xie, KH
dc.date.accessioned	2022-07-29T05:48:28Z
dc.date.available	2022-07-29T05:48:28Z
dc.date.issued	2017-01-01
dc.identifier.citation	International Journal of Geomechanics, 2017, 17, (1), pp. 1-12
dc.identifier.issn	1532-3641
dc.identifier.issn	1943-5622
dc.identifier.uri	http://hdl.handle.net/10453/159359
dc.description.abstract	Model testing for soft soil foundations with and without a prefabricated vertical drain (PVD) was performed to assess the consolidation and long-term performance of PVDs. Surface settlements and excess pore-water pressures at different depths were monitored throughout the applied multistage loading. Classical methods with improved solutions that considered variations in the discharge capacity and non-Darcian flow were applied via a back-analysis of the consolidation results. Parameters related to the smear effect and well resistance were discussed in these solutions. It was found that the foundation improved with PVD had an approximately 20% increase in the total degree of consolidation compared with untreated soft soil foundations; the well resistance of the PVD system not only existed but it also changed over time; the average discharge capacity in the model test under multistage loading condition was far less than the reported value; and the advanced solutions, especially the solution that considered the varied discharge capacity (with qw0 = 3 cm3 /s and Aw = 4.12 10-6 1/s), gained a better fitting result than the classical solution.
dc.language	English
dc.publisher	American Society of Civil Engineers
dc.relation.ispartof	International Journal of Geomechanics
dc.relation.isbasedon	10.1061/(ASCE)GM.1943-5622.0000711
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	Model test and theoretical analysis for soft soil foundations improved by prefabricated vertical drains
dc.type	Journal Article
utslib.citation.volume	17
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	*
pubs.consider-herdc	false
dc.date.updated	2022-07-29T05:48:27Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	17
utslib.citation.issue	1

Abstract:

Model testing for soft soil foundations with and without a prefabricated vertical drain (PVD) was performed to assess the consolidation and long-term performance of PVDs. Surface settlements and excess pore-water pressures at different depths were monitored throughout the applied multistage loading. Classical methods with improved solutions that considered variations in the discharge capacity and non-Darcian flow were applied via a back-analysis of the consolidation results. Parameters related to the smear effect and well resistance were discussed in these solutions. It was found that the foundation improved with PVD had an approximately 20% increase in the total degree of consolidation compared with untreated soft soil foundations; the well resistance of the PVD system not only existed but it also changed over time; the average discharge capacity in the model test under multistage loading condition was far less than the reported value; and the advanced solutions, especially the solution that considered the varied discharge capacity (with qw0 = 3 cm3 /s and Aw = 4.12 10-6 1/s), gained a better fitting result than the classical solution.

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http://hdl.handle.net/10453/159359