框架节点抗震性能试验研究 Seismic Behavior of Reinforced Concrete Exterior Wide Joints

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1、SeismicBehaviorofReinforcedConcreteExteriorWideBeam-ColumnJoints12BingLiandSudhakarA.KulkarniAbstract:AnexperimentalandnumericalinvestigationcarriedoutonRCwidebeam-columnjointswhensubjectedtoseismicloadsisreportedwithinthispaper.Theexperimentalstudywasco

2、nductedbysubjectingthreefull-scalewideexteriorbeam-columnspecimenstosimulatedseismicloadsattheNanyangTechnologicalUniversityofSingapore.Simulationsofearthquakeloadingswereappliedontothespecimensviaquasistaticloadreversals.Seismicperformanceanalysisofthej

3、ointswerebasedontheresultsobtainedfromtheexperi-mentintermsoftheirgeneralbehavior,hysteresisresponse,andthestrainproÞlesofthelongitudinalreinforcementwithinthespecimens.Theseexperimentalresultswerethenusedtovalidateathree-dimensional
3DnonlinearÞnite-el

4、ement
FEmodel.Thebehaviorofthejointsundertheinßuenceofcriticalinßuencingfactorslikecolumnaxialload,transversebeam,andbeambaranchorageratiowerealsoanalyzedthroughtheparametricstudiescarriedout.DOI:10.1061/
ASCE0733-9445
2010136:1
26CEDatabasesubjecthe

5、adings:Beams;Reinforcement;Drift;Finiteelementmethod;Axialloads;Columns;Joints.Authorkeywords:Wide-beam;Jointshear;Reinforcingdetail;Driftratio;Finiteelement;Bondslip;Columnaxialload.Introductioninregionsofhighseismicityifaspecialdetailingregimeisadopted

6、.Inanotherrelevantresearch,aslightrelaxationoftheAdoptingawidebeamsystemforthedesignschemeprovidescurrentAmericanConcreteInstitute
ACI318provisionsonthemanyadvantages.Theyincludereducingtheamountofformworkconnectionbetweenexteriorcolumnsandwidebeamswass

7、ug-required,providingsimplicityforrepetitionandthusdecreasesgestedasbb
bc+2hcwherebbbeamwidth
GentryandWightthestoryheight.Allofthesewouldeventuallyresultinafaster1994.Itwasalsoconcludedthatthewidebeamconnectionscanconstructionatareducedcost
LaFaveandW

8、hite1997.Gravityperformwellevenwhenbb/bcisgreaterthan3.Amongthepreviousstudies,theprimaryconcernforwideload-resistingframesinnonseismicregionscommonlyutilizeRCbeam-columnconnectionsistheeffectivenessofthelongitudinalwideb