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1、第31卷第2期土木工程與管理學(xué)報(bào)Vol_31No.22014年6月JournalofCivilEngineeringandManagementJun.2014大型單列式主廠房鋼骨混凝土邊節(jié)點(diǎn)抗震性能研究劉元文,魏文飛,甘來(1.武漢工大建筑工程公司,湖北武漢430070;2.武漢理工大學(xué)道路橋梁與結(jié)構(gòu)工程湖北省重點(diǎn)實(shí)驗(yàn)室,湖北武漢430070)摘要:本文對某一單列式廠房中的頂層邊節(jié)點(diǎn)抗震性能進(jìn)行了研究。該節(jié)點(diǎn)鋼梁截面高度很大,且為剛性連接形式,對結(jié)構(gòu)抗震不利。根據(jù)工藝和施工需求,頂層邊節(jié)點(diǎn)設(shè)計(jì)成梁貫通節(jié)點(diǎn)連接形式。根據(jù)實(shí)驗(yàn)室的設(shè)備條件和實(shí)際節(jié)點(diǎn)
2、尺寸,針對此單列式廠房中的頂層梁貫通節(jié)點(diǎn),設(shè)計(jì)和制作了1:3縮尺節(jié)點(diǎn)模型,進(jìn)行了梁端低周期往復(fù)加載試驗(yàn),得到了節(jié)點(diǎn)試件的破壞過程、破壞形態(tài)、試件的滯回曲線和骨架曲線。并采用ABAQUS軟件對試驗(yàn)節(jié)點(diǎn)模型進(jìn)行了非線性有限元分析。對比試驗(yàn)數(shù)據(jù)進(jìn)行抗震性能分析,結(jié)果表明:本文所研究的鋼骨混凝土柱-鋼梁節(jié)點(diǎn)具有較高的承載力,滿足原結(jié)構(gòu)的設(shè)計(jì)要求,并有較大的安全儲備,但位移延性系數(shù)和耗能能力相對較差。試驗(yàn)和理論分析結(jié)果基本吻合。關(guān)鍵詞:鋼骨混凝土;節(jié)點(diǎn)核心區(qū);滯回曲線;梁貫通中圖分類號:TU311.3文獻(xiàn)標(biāo)識碼:A文章編號:2095-0985(2014)
3、02-00234)6SeismicPerformancesoftheExteriorJointsofLargeInlinePlantUsingSteelReinforcedConcreteStructureL/UYuan.wen,WEIWen-fei,GANLai(1.WuhanGongDaConstructionEngineeringCompany,Wuhan430070,China;2.HubeiKeyLaboratoryofRoadBridgeandStructureEngineering,WuhanUniversityofTechnol
4、ogy,Wuhan430070,China)Abstract:Theseismicperformancesoftheexteriorjointsonthetoplayerofasingle—rowplantwerestudied.Thesectionalheightofsteelbeaminthejointsislarge,andthejointsarerigidconnections,whichareadversetoearthquakeresistanceofstructure.Accordingtotheneedsoftechnology
5、andconstruction,beam—throughjointswere印pliedtotheexteriorjointsonthetoplayer.Duetoequipmentconditionoflabandactualsizeofjoint,1:3scaledmodelsweredesignedandmadeaccordingtothebeam—throughjointsonthetoplayerofthesingle-rowplant.Then,thetestsonmodelsunderbeam—endlow-cyclicrever
6、sedloadingwereconducted,andthedestructionprocess,failuremodes,hystereticcurvesandskeletonCurvesofspecimenswereobtained.Andthenonlinearfiniteelementanalysisofthemodelswascarriedout.Thetestdatawerecomparedandtheseismicperformanceswereanalyzed.Theresuhsshowthat,thebearingcapaci
7、tiesofthesteelreinforcedconcretecolumn—steelbeamcompositejointsarelarge,whichsatisfiesthedesigndemandandhasbigsafetystock,butthedisplacementductilitycoefficientandenergy-dissipatingcapacityarerelativelypoor.Theresultoftestsisbasicallyconsistentwiththatofthetheoreticalanalysi
8、s.Keywords:steelreinforcedconcrete;jointcorezone;hystereticcurves;beam—thro