地震区预制混凝土剪力墙连接

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1、PRECASTCONCRETESHEARWALLCONNECTIONSFORSEISMICZONESK.A.Soudki(l)andS.H.Rizkalla(2)ABSTRACTTheprecastconcreteshearwallsystemisbecomingverypopularinNorthAmericaforlow,medium,andhighriseconstructionduetotheeconomicaladvantagespossiblewiththeeaseandspeedofassembly,andthehighqualityoftheprecastpanels.T

2、heconnectionsbetweenpanelsareextremelyimportantsincetheyaffectboththespeedoferectionandtheoverallintegrityofthestructure.Thispaperpresentstheresultsofthelasttwophasesofasix-yearresearchprogramconductedtoinvestigatethebehaviourandthecapacityoffIfteenconnectionconfigurationsusedforprecastload-beari

3、ngshearwallpanelssubjectedtomonotonicshearloadingandlargereversedcyclicloadingconditions.Connectionconfigurationsincludedry-packedplainsurface,dry-packedplainsurfacewithcontinuityreinforcement,dry-packedwithtwotypesofmechanicalshearconnectorsinadditiontothecontinuitybars,dry-packedwithpost-tensio

4、ning,andtwotypesofdry-packedmultipleshearkeys.Theresearchalsoincludeconnectionswhichsupporthollow-coreslabwithandwithoutpost-tensioning.Theperformanceofnewinnovativeconnections,suchaspartialorcompletedebondingofthereinforcementcontinuityandtheuseofenergydissipatingmechanicalconnectionsfortheconti

5、nuityreinforcement,werealsoexamined.Threedifferentlevelsofloadnormaltotheconnectiontosimulatetheeffectsofgravityloadwereused.Theresearchfmdingsofthisinvestigationwereimplementedinthedesignandconstructionofthree32-storiesapartmentbuildingsinWinnipeg,Manitoba.Theconnectionsconsideredinthisstudyprov

6、idedsignificantsavingsinconstructiontimeandcost.1DoctoralCandidate,CivilEngineeringDepartmeht,UniversityofManitoba2AssociateDeanofEngineeringandProfessor,UniversityofManitobaPRECASTCONCRETESHEARWALLCONNECTIONSFORSEISMICZONESK.A.SoudkiandS.H.RizkallaINTRODUCTIONAtpresent,theprecastconcreteshearwal

7、lsystemisbeingdesignedandconstructedinnon-seismiczones.Theuseofsuchasystemisverylimitedinseismicallyactiveregionsduetothelackofknowledgeofhowthistypeofconstructionperformsunderseismicloadingconditions.Thestructuralinte