Progressive_Collapse_Competition

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1、2013ProgressiveCollapseTestCompetitionCollapsePreventionCommittee,ArchitecturalSocietyofChinaandTsinghuaUniversityBriefintroductionofthetestspecimenTheprimaryobjectiveofthiscompetitionistopredictthepeakloadresistanceofacontinuousreinforcedconcrete(RC)beam.Thegoaloftheexperimentistoinve

2、stigatetheinfluenceofthefloorslabsontheprogressivecollapseresistanceofanRC(reinforcedconcrete)frame.ThetestsetupofthespecimenisshowninFigure1.Itisatwo-spancontinuousbeamwithconcreteslabsoneachside.Thebeamandtheslabarefixedatbothendsinthelongitudinaldirection.Theverticalloadisappliedtot

3、hemiddlecolumntosimulatetheremovalofthemiddlecolumn.3244681275224336461881722755(1)Testspecimen;(2)Hydraulicjack;(3)Strongbeams;(4)Boundaryblocks;(5)Supportingblocks;(6)Steelplateembeddedinthespecimen;(7)Steelplateembeddedinthesupportingblock;(8)Connectionofsteelplate;Figure1TestsetupT

4、hekeycharacteristicsofthistestareasfollows:(1)Theverticalloadisappliedbyusingtwohydraulicjacks(Figure2).Theupperhydraulicjackappliesaconstantloadtothetopofthecolumnwhilethelowerhydraulicjackunloadsstep-by-steptosimulatethepseudo-staticremovalofthesupportingcolumn.(2)Astronglyfixedbound

5、aryconditionisappliedtobothendsofthespecimen.Theboundaryblocksareconnectedbytwostrongbeamstocontrolthehorizontaldisplacement.Theyarealsoweldedtothesupportingblockstopreventtherotation.Duringthetests,nodisplacementorrotationismeasuredatthesupports.UpperhydraulicjackHingeColumnSlabLongit

6、udebeamTransversebeamHingeLowerhydraulicjackFigure2DetailsoftheloadedpointThesectionaldimensionsandreinforcementdetailsofthespecimenareshowninFigure3.BeamreinforcementdetailsareshowninSection1-1andSection2-2.Reinforcementonthetopoftheslabisφ6@190mm,whichiscut550mmawayfromtheedgeofthebe

7、amsortheboundaryblocks(Section3-3andSection5-5).Reinforcementatthebottomoftheslabisφ6@190mmandspansthroughtheentireslab(Section3-3,Section4-4andSection5-5).Thematerial(steelandconcrete)testresultsofthespecimenareshowninTable2andFigure4.Figure3ReinforcementinthespecimenTable2ConcreteC