UHTCC-混凝土组合板柱节点抗冲切承载力分析-豆柴文库

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UHTCC-混凝土组合板柱节点抗冲切承载力分析
UHTCCreferstoUltra-HighToughnessCementitiousComposite,whichisahigh-performancematerialusedinstructuralengineering.Inthispaper,wewillfocusontheanalysisoftheimpactshearresistanceoftheUHTCCcompositepanel-columnjoints.Thepurposeofthisstudyistobetterunderstandthebehaviorandload-carryingcapacityofUHTCCcompositejointsunderimpactloads.
1.Introduction
TheuseofUHTCCinconstructionhasgainedsignificantattentionduetoitsexceptionalmechanicalproperties,whichallowforenhancedstructuralperformanceanddurability.UHTCCisknownforitshighstrength,toughness,andductility,makingitanidealmaterialforapplicationsthatrequireresistancetoimpactanddynamicloads.Inthisstudy,wewillinvestigatetheimpactshearresistanceofUHTCCcompositepanel-columnjoints,aimingtoprovidevaluableinsightsintothestructuralperformanceofthesejoints.
2.ExperimentalProcedure
ToanalyzetheimpactshearresistanceofUHTCCcompositepanel-columnjoints,experimentaltestswereconducted.ThetestsinvolvedconstructingcompositejointsusingUHTCCpanelsandcolumns,andsubjectingthemtoimpactloads.Theimpactloadswereappliedusingadrop-weightimpacttestingmachine,whichimpartedaconcentratedloadonthejoint.Duringthesetests,variousparametersweremonitored,includingtheload-displacementresponseandfailuremodeofthejoints.
3.ResultsandDiscussion
TheexperimentalresultsshowedthatUHTCCcompositepanel-columnjointsexhibitedexcellentimpactshearresistance.Theload-displacementresponseofthejointsindicatedagradualincreaseinload-carryingcapacitywithacorrespondingincreaseindisplacement.Thefailuremodesobservedinthejointswerepredominantlyshearfailure,indicatingthatthejointseffectivelytransferredtheappliedloads.Additionally,crackpropagationintheUHTCCmaterialwasobservedtobeslow,demonstratingthematerial’shightoughness.
4.FactorsAffectingImpactShearResistance
SeveralfactorswerefoundtoinfluencetheimpactshearresistanceofUHTCCcompositepanel-columnjoints.ThesefactorsincludethethicknessandstrengthoftheUHTCCpanels,thereinforcementratio,thejointgeometry,andtheloadingrate.Itw