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1、第43卷第11期土木工程学报Vo.l43No.112010年11月CHINACIVILENGINEERINGJOURNALNov.2010填充墙不规则布置对RC框架抗震性能影响试验研究郭子雄黄群贤魏荣丰刘阳(华侨大学,福建泉州362021)摘要:进行3榀单层两跨填充墙RC框架结构试件在水平往复荷载作用下的抗震性能试验,重点研究砌体填充墙及其布置形式对框架结构抗震性能的影响。填砌方式包括两跨均半高填砌和仅一跨全高填砌两种。通过试验结果对各试件的破坏特征、滞回曲线、骨架曲线、位移延性、刚度退化、强度退化和耗能性能等抗震性能指标进行分析。试验结果表明:填充墙对框架具有明
2、显的刚度效应,其存在较大地提高了框架结构的抗侧刚度和水平承载力;填充墙对框架柱具有明显约束效应,其存在和布置方式对框架结构的破坏形态具有明显影响,带填充墙的框架柱最终均发生剪切破坏;两跨均半高填砌的框架结构由于填充墙的约束效应,柱均发生短柱破坏,其延性和耗能能力均比对比框架差;仅一跨全高填砌填充墙的框架,其填充墙的破损过程参与了框架结构的滞回耗能,虽然最终在填砌跨柱发生剪切破坏,仍具有较好的抗震性能。研究结果可为考虑填充墙和框架共同作用的弹塑性地震反应分析提供参考。关键词:钢筋混凝土框架结构;填充墙;填充墙布置形式;试验研究;抗震性能中图分类号:TU375.4TU352.1
3、文献标识码:A文章编号:1000-131X(2010)11-0046-09ExperimentalstudyoftheseismicbehaviorofirregularlybrickinfilledRCframesGuoZixiongHuangQunxianWeiRongfengLiuYang(HuaqiaoUniversity,Quanzhou362021,China)Abstract:Threeone-storey-two-bayreinforcedconcrete(RC)frameswereconstructedandtestedundercyclicloadingtoi
4、nvestigatetheeffectsofinfilledwallswithvariousinfillconfigurationsontheseismicbehaviorofRCframestructures.Onespecimenframeisforcomparisonandhasnoinfilledwalls,andtheothertwoframeshaveinfilledwalls,witheithertwobaysinfilledwithhal-fheightwalloronlyonebayinfilledwithal-lheightwal.lBasedonthetestres
5、ults,thedamagecharacteristics,hystereticcurves,skeletoncurves,displacementductility,stiffnessdegradation,strengthdegradationandenergydissipationwereanalyzed.Theresultsindicatetha:tInfillwallsmayenhancethelateralstiffnessandstrengthoftheframes;Theconfigurationofinfillwallsaffectsthefailuremodeso
6、finfilledRCframes,andallthecolumnsconnectingwithinfillwallsexhibitshearfailure;Infillwallshavestrongrestrainteffectontheframes,andasaresul,ttheframewithtwo-bayhal-fheightinfilledwallsunderwentshortcolumnfailure;AsfortheRCframewithal-lheightinfilledwallinonebay,theinfilledwallparticipatedinthest
7、ructuralhystereticenergydissipation.Althoughshearfailureoccurredinthosecolumnsconnectingwithinfillwalls,theframestillexhibitedhigherultimatestrengthandenergydissipatingcapacitythanthatoftheframewithoutinfillwal.lKeywor
