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基于ABAQUS的再生混凝土塑性损伤性能.docx

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基于ABAQUS的再生混凝土塑性损伤性能 Abstract Inrecentyears,theuseofrecycledmaterialsinconcretehasbecomeincreasinglyimportantduetothelimitedavailabilityofnaturalresourcesandtheneedtoreducetheenvironmentalimpactofconstruction.Inthispaper,theplasticdamagebehaviorofrecycledconcreteisinvestigatedusingABAQUSsoftware.Theanalysisiscarriedoutonreinforcedconcretebeamsusingdifferentpercentagesofrecycledaggregateanddifferentmixdesigns.Theresultsarecomparedwiththoseofconventionalconcrete.Thestudyrevealsthattheplasticdamagebehaviorofrecycledconcreteisdifferentfromthatofconventionalconcrete,andthatthepercentageofrecycledaggregatehasasignificanteffectontheplasticbehavioroftherecycledconcrete.Theresultsofthisstudycanbeusedtooptimizethemixdesignofrecycledconcreteandimproveitsdurability. Introduction Theuseofrecycledmaterialsinconcretehasbeenontheriseinrecentyearsduetothelimitedavailabilityofnaturalresourcesandtheneedtoreducetheenvironmentalimpactofconstruction.Recycledconcreteisasustainablematerialthatuseswastematerialssuchascrushedconcreteasaggregate,reducingtheamountofwasteinlandfills.Therecycledconcretehassimilarmechanicalpropertiestoconventionalconcrete,However,theprocessofrecyclingandthepropertiesofrecycledaggregatescanaffectthebehaviorofconcrete. Plasticdamagebehaviorisoneoftheessentialmechanicalcharacteristicsofconcretestructures.Topredictandanalyzetheplasticdamagebehaviorofrecycledconcrete,thefiniteelementmethodcanbeused.ABAQUSsoftware,afiniteelementanalysissoftware,iscapableofsimulatingandpredictingthebehaviorofcomplexconcretestructures.ThisstudyaimstoinvestigatetheplasticdamagebehaviorofrecycledconcreteusingABAQUSsoftware. ExperimentalProgram Thestudyisbasedontheexperimentaldatafromtestingreinforcedconcretebeams.Differentpercentagesofrecycledaggregates(0%,25%,50%,75%,and100%)areusedtoproducetheconcretebeams.Differentmixdesignsareusedtoobtainatotalof15concretebeams. Themechanicalpropertiesoftheconcretespecimens,includingcompressivestrength,tensilestrength,andmodulusofelasticityaredetermine