Title of article
NumericalmodelsforprestressingtendonsincontainmentstructuresOriginalResearchArticle
Author/Authors
Hyo-GyoungKwak، نويسنده , , JaeHongKim، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
20
From page
1061
To page
1080
Abstract
Twomodifiedstress–strainrelationsforbondedandunbondedinternaltendonsareproposed.Theproposedrelationscansimulatethepost-crackingbehaviorandtensionstiffeningeffectinprestressedconcretecontainmentstructures.Inthecaseofthebondedtendon,tensileforcesbetweenadjacentcracksaretransmittedfromabondedtendontoconcretebybondforces.Therefore,theconstitutivelawofabondedtendonstiffenedbygroutneedstobedeterminedfromthebond–sliprelationship.Ontheotherhand,astressincreasebeyondtheeffectiveprestressinanunbondedtendonisnotsection-dependentbutmember-dependent.Itmeansthatthetendonstressunequivocallyrepresentsauniformdistributionalongthelengthwhenthefrictionlossisexcluded.Thus,usingastrainreductionfactor,themodifiedstress–straincurveofanunbondedtendonisderivedbysuccessiveiterations.Inadvance,thepredictionofcrackingbehaviorandultimateresistingcapacityofprestressedconcretecontainmentstructuresusingtheintroducednumericalmodelsaresucceeded,andtheneedfortheconsiderationofmanyinfluencingfactorssuchasthetensionstiffeningeffect,plastichingelengthandmodificationofstress–strainrelationoftendonisemphasized.Finally,thedevelopednumericalmodelsareappliedtoprestressedconcretecontainmentstructurestoverifytheefficiencyandapplicabilityinsimulatingthestructuralbehaviorwithbondedand/orunbondedtendons.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
896059
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