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Article: Numerical modelling of prestresssing steel tendons under fire and post-fire conditions

TitleNumerical modelling of prestresssing steel tendons under fire and post-fire conditions
Authors
Issue Date2015
PublisherMulti-science Publishing. The Journal's web site is located at http://www.multi-science.co.uk/advstruc.htm
Citation
Advances in Structural Engineering, 2015, v. 18 n. 10, p. 1703-1722 How to Cite?
AbstractThe behaviour of prestressing steel tendons under fire and post-fire conditions is investigated numerically employing the ABAQUS package and its user-defined material subroutine UMAT which allows comprehensive constitutive relationships to be implemented. Based on an existing thermal creep model, a new set of parameters are proposed and calibrated against available test results in the literature. The proposed numerical model is versatile in predicting thermal creep, isothermal response and transient thermal relaxation of prestressing steel tendons. Moreover, parametric studies are conducted to investigate the effects of heating rate, heated length ratio, initial stress and various boundary conditions on the thermal relaxation of prestressing steel tendons. Besides, transient state analyses are carried out with constant heating rate and initial stress to investigate the rupture properties of prestressing steel tendons.
Persistent Identifierhttp://hdl.handle.net/10722/216779

 

DC FieldValueLanguage
dc.contributor.authorWEI, Y-
dc.contributor.authorAu, FTK-
dc.date.accessioned2015-09-18T05:38:16Z-
dc.date.available2015-09-18T05:38:16Z-
dc.date.issued2015-
dc.identifier.citationAdvances in Structural Engineering, 2015, v. 18 n. 10, p. 1703-1722-
dc.identifier.urihttp://hdl.handle.net/10722/216779-
dc.description.abstractThe behaviour of prestressing steel tendons under fire and post-fire conditions is investigated numerically employing the ABAQUS package and its user-defined material subroutine UMAT which allows comprehensive constitutive relationships to be implemented. Based on an existing thermal creep model, a new set of parameters are proposed and calibrated against available test results in the literature. The proposed numerical model is versatile in predicting thermal creep, isothermal response and transient thermal relaxation of prestressing steel tendons. Moreover, parametric studies are conducted to investigate the effects of heating rate, heated length ratio, initial stress and various boundary conditions on the thermal relaxation of prestressing steel tendons. Besides, transient state analyses are carried out with constant heating rate and initial stress to investigate the rupture properties of prestressing steel tendons.-
dc.languageeng-
dc.publisherMulti-science Publishing. The Journal's web site is located at http://www.multi-science.co.uk/advstruc.htm-
dc.relation.ispartofAdvances in Structural Engineering-
dc.titleNumerical modelling of prestresssing steel tendons under fire and post-fire conditions-
dc.typeArticle-
dc.identifier.emailAu, FTK: francis.au@hku.hk-
dc.identifier.authorityAu, FTK=rp00083-
dc.identifier.doi10.1260/1369-4332.18.10.1703-
dc.identifier.hkuros253435-
dc.identifier.spage1703-
dc.identifier.epage1722-
dc.publisher.placeEssex-

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