Modelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China

5.00
Hdl Handle:
http://hdl.handle.net/2436/620292
Title:
Modelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China
Authors:
Yang, Z.X.; Zhao, C.F.; Xu, C.J. ( 0000-0002-4515-8982 ) ; Cai, Y.Q.; Pan, K.; Wilkinson, Stephen ( 0000-0001-9400-4747 )
Abstract:
Peat is a very variable but normally weak material. While engineering failures involving peat are common, the full diversity of engineering behaviours exhibited by peat has not been well classified due to its large range of possible compositions. This paper presents the behaviour of a fibrous peat which is a fill (made ground) originating from the most recent dredging of the West Lake, a site of cultural and historic importance in China. Given its relatively unique mechanism of deposition, the distinctive characteristics of this peat are presented in comparison to other peats reported in the literature highlighting its unique engineering behaviour. A laboratory study carried out on the peat at Jiangyangfan Eco-park, located in Hangzhou, China identifies that it has its special aspects when compared to other peats. The shearing behaviour of peat can be described using the framework of critical state theory. The most prominent characteristic of the West Lake Peat is that its undrained stress path bends towards the left at the very beginning of shearing which indicates that plastic deformation occurs at very small stress ratios. A constitutive model based on critical state theory for predicting the undrained shear behaviour of this type of peat from low stress to critical state levels is presented. This model also includes several elements of peat behaviour previously reported and it may therefore be applied to a wider range of peat soils.
Citation:
Modelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China 2016, 215:25 Engineering Geology
Publisher:
Elsevier
Journal:
Engineering Geology
Issue Date:
Oct-2016
URI:
http://hdl.handle.net/2436/620292
DOI:
10.1016/j.enggeo.2016.10.009
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0013795216305154
Type:
Article
Language:
en
ISSN:
0013-7952
Appears in Collections:
Construction and Infrastructure

Full metadata record

DC FieldValue Language
dc.contributor.authorYang, Z.X.en
dc.contributor.authorZhao, C.F.en
dc.contributor.authorXu, C.J.en
dc.contributor.authorCai, Y.Q.en
dc.contributor.authorPan, K.en
dc.contributor.authorWilkinson, Stephenen
dc.date.accessioned2016-11-24T16:33:44Z-
dc.date.available2016-11-24T16:33:44Z-
dc.date.issued2016-10-
dc.identifier.citationModelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, China 2016, 215:25 Engineering Geologyen
dc.identifier.issn0013-7952en
dc.identifier.doi10.1016/j.enggeo.2016.10.009-
dc.identifier.urihttp://hdl.handle.net/2436/620292-
dc.description.abstractPeat is a very variable but normally weak material. While engineering failures involving peat are common, the full diversity of engineering behaviours exhibited by peat has not been well classified due to its large range of possible compositions. This paper presents the behaviour of a fibrous peat which is a fill (made ground) originating from the most recent dredging of the West Lake, a site of cultural and historic importance in China. Given its relatively unique mechanism of deposition, the distinctive characteristics of this peat are presented in comparison to other peats reported in the literature highlighting its unique engineering behaviour. A laboratory study carried out on the peat at Jiangyangfan Eco-park, located in Hangzhou, China identifies that it has its special aspects when compared to other peats. The shearing behaviour of peat can be described using the framework of critical state theory. The most prominent characteristic of the West Lake Peat is that its undrained stress path bends towards the left at the very beginning of shearing which indicates that plastic deformation occurs at very small stress ratios. A constitutive model based on critical state theory for predicting the undrained shear behaviour of this type of peat from low stress to critical state levels is presented. This model also includes several elements of peat behaviour previously reported and it may therefore be applied to a wider range of peat soils.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0013795216305154en
dc.rightsArchived with thanks to Engineering Geologyen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectPeaten
dc.subjectPhysiochemical propertiesen
dc.subjectCompressionen
dc.subjectUndrained shearen
dc.subjectCritical stateen
dc.subjectConstitutive modelen
dc.titleModelling the engineering behaviour of fibrous peat formed due to rapid anthropogenic terrestrialization in Hangzhou, Chinaen
dc.typeArticleen
dc.identifier.journalEngineering Geologyen
dc.date.accepted2016-10-
rioxxterms.funderNational Natural Science, Qianjiang Manage Office of Hangzhou Administration Bureau of Gardens, Key Research & Development programof China, National Key Basic Research Program of China, Zhejiang Education Department.en
rioxxterms.identifier.projectUoW241116SWen
rioxxterms.versionAMen
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0en
rioxxterms.licenseref.startdate2017-10-20en
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