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1、EngineeringStructures33(2011)3559–3569ContentslistsavailableatSciVerseScienceDirectEngineeringStructuresjournalhomepage:www.elsevier.com/locate/engstructAcompression–tensionconcretedamagemodel,appliedtoawindturbinereinforcedconcretetowerJairoA.Paredesa,b,c,∗,AlexH.Barbata,b,Serg
2、ioOllera,baStructuralMechanicsDepartment,CivilEngineeringSchool(Barcelona-Tech)–TechnicalUniversityofCatalonia.C/GranCapitans/nEd.C1,CampusNord,08034Barcelona,SpainbInternationalCenterforNumericalMethodsinEngineering(CIMNE),Barcelona,SpaincNationalUniversityofColombia,ManizalesC
3、ampus,A.A.127,ColombiaarticleinfoabstractArticlehistory:Structuressubjectedtocyclicloadsshowalternativetension–compressionstressstates;insuchacase,Received19November2010evenifcertaindamage(fracture)isreachedduringthetensioncycle,thecomputationalmodeloftheReceivedinrevisedformstr
4、uctureshouldmaintainitscapacitytowithstandsubsequentcompressionbasedonlyonthecontact7June2011effectinthedamagedarea(opening,closingandreopeningofcracks).Inordertocontrolthisbehavior,aAccepted1July2011phenomenologicalconstitutivemodelabletoconsiderthecontactasastructurallimitatio
5、nisrequired.Availableonline20August2011Fromtheconstitutivepointofview,geomaterialshavedifferentdamagethresholdsfortensionandcompressionand,fromthestructuralpointofview,itmustbeensuredthatthematerialdamagedinKeywords:tensionstillresistcompression.Inthiscase,itisacceptedthatcracks
6、behaveasacontactsurfaceatDamagemodelCompositesthestructurallevel.Tomeettheabovementionedphenomenology,amodificationofthedamagemodelNonlinearanalysisdifferentiatedintensionandcompressionproposedbyFariaetal.[FariaR,OliverJ,CerveraM.Astrain-Windturbinetowerbasedplasticviscous-damag
7、emodelformassiveconcretestructures.IntJSolidsStruct1998;35:1533–58]Precaststructuresisperformedinthispaper,consideringindependentstrengththresholdsineachoftheseprocesses,Fiberorientationcontrolledwithtwoindependentdiscontinuitythresholdfunctions.Also,inthisworkanelasto-plasticco
8、nstitutivemodelisusedtorepresentthebehaviouroft
