预制装配式剪力墙结构墙板节点抗震性能研究

31120112JOURNALOFEARTHQUAKEENGINEERINGANDENGINEERINGVIBRATIONVo.l31No.1Feb.2011:2010-07-20;:2010-11-13:2009()(2009-K2-20):(1985-),,,.E-mai:[e-mail]:1000-1301(2011)01-0035-06朱张峰,郭正兴(,210096):,22,,:,,,,;,;;10mm,:;;;;:TU398.2:ASeismicperformanceresearchonwal-lslabjointsofnewprecastconcreteshearwallstructureZHUZhangfeng,GUOZhengxing(SchoolofCivilEngineering,SoutheastUniversity,Nanjing210096,China)Abstract:Toassesstheseismicperformanceofwal-lslabjointsofnewprecastconcreteshearwallstructure,thepseudo-staticloadtestwascarriedoutontwocas-tin-situandtwonewprecastspecimens.Combiningwiththemeansofnonlinearanalysis,theseismicbehaviorwascomprehensivelyanalyzedincludingcarryingcapacity,de-formability,forcemechanismandfailuremodeandthereasonablewal-lslabconnectreinforcementsdiameterwaspreliminarilydiscussed.Analysisresultsshowthatcomparedwithcas-tin-situspecimens,newprecastconcretespecimensshowtheirsimilarseismicperformance,.ie.highercarryingcapacity,thesamedisplacementductilitycoefficientandplumphystereticcircle.Theconnectreinforcementshaveevenforcedistributionandthejointsper-formbetterforceintegrity.Thefailuremodesareallbendingfailureinplastichingeregionintherootoftheslab.Whenthediameteroftheconnectreinforcementis10mm,thejointscanmeettheforce-bearingdemand.Newpre-castconcretewal-lslabjointsdemonstrateagoodseismicperformanceandcanbeoneseismicfortificationlineofnewprecastconcreteshearwallstructure.Keywords:precastconcrete;wal-lslabjoints;seismic;nonlinearanalysis,,[1](newprecastconcreteshearwallstructure,NPC),U,,[2-3],,,,,11.122NPCXJ1XJ2,NPCZP2ZP34C30,HRB400,HPB2351(a)XJ1XJ2(b)ZP2ZP31Fig.1Fabricationdetailsofspecimens,0.15,,,2,85%,3363123Fig.2LoadingsystemFig.3Loadingdiagramoftest1.24,,,,,,,41(a)XJ1(b)XJ2(c)ZP2371:(d)ZP34Fig.4Hystereticcurvesandskeletoncurvesofspecimens22.1-[4],,ANSYS,,,,,,5(a)(b)NPC(,)5Fig.5Nonlinearnumericalmodel2.241,,NPC53%,,4,,NPC26%,,NPC1Table1ComparisonbetweentestandnonlinearcalculationresultsFTy(kN)FTu(kN)y(mm)Umax(mm)Fyc(kN)Fuc(kN)Fyc/FyTFuc/FuTXJ1303816.2565431461.031.21XJ227371040431461.151.24ZP2425610.542446691.101.23ZP34759936446691.101.173831-5,,NPC,,,,,,,(a)(b)NPC6Fig.6Comparisonbefweennonlinearcalculationcurveandtestskeletoncurve2.3,,,(7(a));NPC,(7(b)),,8,(a)(b)NPC7Fig.7Reinforcementstraindistributionineachloadingstage(a)(b)NPC8Fig.8Reinforcementstressdistributionbetweennonlinearmodelinfailurestage391:2.4NPC,9NPC,(a)(b)NPC9Fig.9Comparisonoffailuremodesofnonlinearcalculationandtest10Fig.10Comparisonofcurves2.5,8mm10mm,(12mm)10,10mm,,10mm3(1):,NPCNPC,(2)NPC,,,,,(3),,:[1],,,.[J].,2010,30(4):72-79.[2],,,.[J].,2007,27(6):97-105.[3],,,.[J].,2007,27(4):55-60.[4]WuT,LiuBQ,WangL,eta.lExperimentalinvestigationandnonlinearanalysisofabnormalinteriorjointsinRCframestructures[C]Pro-ceedingsoftheTenthInternationalSymposiumonStructuralEngineeringforYoungExperts,VolsIandI,i2008:467-471.4031