工字型钢_混凝土组合梁受弯性能数值分析

43720134BuildingStructureVol．43No．7Apr．2013-121211114111052411105-。-、、、。TU398A1002-848X201307-0077-05NumericalanalysisonflexuralbehaviorofI-shapedsteel-concretecompositebeamsYangZheguang12LiuZhong12ZhuZhijun1TanLiangbin1ZhuYongjie11CollegeofCivilEngineering＆MechanicsXiangtanUniversityXiangtan411105China2InstituteofRheologicalXiangtanUniversityXiangtan411105ChinaAbstractThree-dimensionalmodelofI-shapedsteel-concretecompositebeamswasestablishedinordertoresearchtheflexuralbehaviorofcompositebeams．Thewholeexperimentprocesswassimulatednonlinearly．Comparisonsbetweentheexperimentanalysisandcalculatedresultsshowedgoodcorrelation．TheforcemechanismofI-shapedsteel-concretebeamswasanalyzed．Theeffectsofthemainparameterssuchassteelstrengthgradeconcretestrengthgradesteelwebsthicknessconcreteplatethicknessandreinforcementratioonflexuralbehaviorwereanalyzedbyusingthepresentedmodel．Theresultsderivedfromanalysisprovidesomeusefulreferencesforengineeringdesign．Keywordscompositebeam[e-mail]。0-、。、、、1-3。。Silva4。Alessandro5。ChungKF6。7。《》GB50017—2003。-AYSYS。1-1.18-。4。11。1fcu/MPaρst/%/mmnrfyf/MPafyw/MPaSCB36SCB3752.5362.021.66210×50@801.41409.8349.3SCB40SCB4150.3664.481.95210×50@801.40435.7501.4fcuρstnrfyffyw、。1.28ANSYS2。20131。。8Solid654Shell43Combin39XCombin39YZX。XYZYZ。。2、、BISOvonMises。2.06×105MPa0.3。MELASWillan-Warnke。0.50.950.69。Hognestad1011y=1．115x+0．26x2－0．375x30≤x≤10．498x－11＜x≤4{1y=σc/σc0x=εc/εc0σcεcσc0εc0。--3SCB36-。Buttry12Q=Qu80S25．4+80S2Qu=0．43AsEcf槡c≤0．7Asγfus3QQu13SEcfcAsfusγ。3-、、Newton-Raphson150。1.5%。2--M-δMu42。SCB4187437．-4M-δ5Mu。5。。2/kN·m/kN·m/SCB36154.1152.90.99SCB37173.1163.60.95SCB40177.5177.81.01SCB41193.4182.40.945SCB41-。SCB36。6。。。0.7Mu～0.8Mu。。。6SCB367SCB36。。M≤0.6Mu、0.6Mu＜M≤0.9Mu、。7SCB368SCB36。。。55cm972013。。。0.6Mu。0.437mm。7、8。8SCB363SCB36、、、M-δ9。9a。235MPa420MPa58.8%。。9b。C40C40C8014.1%。。C60。C40～C60。9c9M-δ08437．-。。9d。。。9e。9f。0.3%。。4-ANSYS1-。2。3。C40～C60。4。。5。0.3%。1．-M．2005．2．-J．19993223-7．3．-D．2008．4AMILTONRDASILVAJOOBATISTAMSOUSAJR．AfamilyofinterfaceelementsfortheanalysisofcompositebeamswithinterlayerslipJ．FiniteElementsinAnalysisandDesign2009455305-314．5ALESSANDROZONAGIANLUCARANZI．Finiteelementmodelsfornonlinearanalysisofsteel-concretecompositebeamswithpartialinteractionincombinedbendingandshearJ．FiniteElementsinAnalysisandDesign201147298-118．6CHUNGKFCHANCK．AdvancedfiniteelementmodelingofcompositebeamswithhighstrengthmaterialsanddeformableshearconnectorsJ．ProcediaEngineering2011141114-1122．7．-J．201032447-51．8．-J．200930264-69．9．ANSYSM．2007．10EIVINDHOGNESTADHANSONNW．ConcretestressdistributioninultimatestrengthdesignJ．JournalProceedings19955212455-480．11．M．2004．12BUTTRYKE．Behaviorofstudshearconnectorsinlight-weightandnormal-weightconcreteD．MissouriColumbia-UniversityofMissouri1965．13GB50017—2003S．2003．《》《》＞＞＞＞18