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Article: Accurate time-dependent analysis of concrete bridges considering concrete creep, concrete shrinkage and cable relaxation

TitleAccurate time-dependent analysis of concrete bridges considering concrete creep, concrete shrinkage and cable relaxation
Authors
KeywordsConcrete bridges
Creep
Relaxation
Shrinkage
Stress relaxation model
Time integration method
Time-dependent behaviour
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstruct
Citation
Engineering Structures, 2011, v. 33 n. 1, p. 118-126 How to Cite?
AbstractThis paper proposes a new relaxation model for steel tendons based on the equivalent creep coefficient to enable the accurate estimation of losses of cable forces. The equivalent creep coefficient works not only in the case of intrinsic relaxation but also under various boundary conditions. Based on the proposed relaxation model, an accurate finite element analysis of the time-dependent behavior of concrete bridges considering concrete creep, concrete shrinkage and cable relaxation is devised based on the time integration method. Concrete members are modeled by beam elements while tendons are modeled by truss elements with nodes connected to the beam axis by perpendicular rigid arms. Then the individual and combined effects of concrete creep, concrete shrinkage and cable relaxation on the long-term performance of concrete structures are investigated. It is found that the proposed relaxation model and time integration method can provide a reliable method for time-dependent analysis. The numerical results obtained indicate that the interactions among these factors should be considered carefully in analyzing the long-term performance of concrete bridges. © 2010 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/139054
ISSN
2015 Impact Factor: 1.893
2015 SCImago Journal Rankings: 1.813
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council (RGC) of the Hong Kong Special Administrative Region, ChinaHKU 7102/08E
Funding Information:

The work described in this paper has been supported by the Research Grants Council (RGC) of the Hong Kong Special Administrative Region, China (RGC Project No. HKU 7102/08E).

References

 

DC FieldValueLanguage
dc.contributor.authorAu, FTKen_HK
dc.contributor.authorSi, XTen_HK
dc.date.accessioned2011-09-23T05:44:37Z-
dc.date.available2011-09-23T05:44:37Z-
dc.date.issued2011en_HK
dc.identifier.citationEngineering Structures, 2011, v. 33 n. 1, p. 118-126en_HK
dc.identifier.issn0141-0296en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139054-
dc.description.abstractThis paper proposes a new relaxation model for steel tendons based on the equivalent creep coefficient to enable the accurate estimation of losses of cable forces. The equivalent creep coefficient works not only in the case of intrinsic relaxation but also under various boundary conditions. Based on the proposed relaxation model, an accurate finite element analysis of the time-dependent behavior of concrete bridges considering concrete creep, concrete shrinkage and cable relaxation is devised based on the time integration method. Concrete members are modeled by beam elements while tendons are modeled by truss elements with nodes connected to the beam axis by perpendicular rigid arms. Then the individual and combined effects of concrete creep, concrete shrinkage and cable relaxation on the long-term performance of concrete structures are investigated. It is found that the proposed relaxation model and time integration method can provide a reliable method for time-dependent analysis. The numerical results obtained indicate that the interactions among these factors should be considered carefully in analyzing the long-term performance of concrete bridges. © 2010 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/engstructen_HK
dc.relation.ispartofEngineering Structuresen_HK
dc.subjectConcrete bridgesen_HK
dc.subjectCreepen_HK
dc.subjectRelaxationen_HK
dc.subjectShrinkageen_HK
dc.subjectStress relaxation modelen_HK
dc.subjectTime integration methoden_HK
dc.subjectTime-dependent behaviouren_HK
dc.titleAccurate time-dependent analysis of concrete bridges considering concrete creep, concrete shrinkage and cable relaxationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0141-0296&volume=33&issue=1&spage=118&epage=126&date=2011&atitle=Accurate+time-dependent+analysis+of+concrete+bridges+considering+concrete+creep,+concrete+shrinkage+and+cable+relaxation-
dc.identifier.emailAu, FTK:francis.au@hku.hken_HK
dc.identifier.authorityAu, FTK=rp00083en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.engstruct.2010.09.024en_HK
dc.identifier.scopuseid_2-s2.0-78649449209en_HK
dc.identifier.hkuros193137en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78649449209&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume33en_HK
dc.identifier.issue1en_HK
dc.identifier.spage118en_HK
dc.identifier.epage126en_HK
dc.identifier.isiWOS:000285905100013-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridAu, FTK=7005204072en_HK
dc.identifier.scopusauthoridSi, XT=36676577700en_HK
dc.identifier.citeulike8135967-

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