圓形鋼管混凝土結(jié)構(gòu)梁柱節(jié)點抗彎強度的研究.pdf

1、上海交通大學碩士學位論文圓形鋼管混凝土結(jié)構(gòu)梁柱節(jié)點抗彎強度的研究姓名：劉兵申請學位級別：碩士專業(yè)：巖土工程指導教師：付功義2003.1.1圓形鋼管混凝土結(jié)構(gòu)梁柱節(jié)點抗彎強度的研究ABSTRACTiiABSTRACTConcreteFilledTubeStructure(CFT)isgainingpopularityfitsuniquemechanicalacterbuttheexperimentaltheeticresearchabou

2、tthebeamtocolumnconnectionisstillinadequate.Basedonaseriesoftestsoflocalmodelofbeamtocolumnconnectionplanarthreedimensionalframesourprojectisonthesystemicresearchofstrengthstiffnessoftheconnections.Thispaperfocusesonunst

3、iffenedconnectionbetweensteelbeamflangeconcretefilledcircularcolumntube.Atfirstthesimplifiedlocalmodelofbeamtocolumnconnectioncrespondingtestmethodareintroducedtotally13specimensclassifiedastwogroupsaretested.Onegroupisa

4、ppliedwithuniaxialtensileloadtheotherisappliedwithtensileloadinonedirectioncompressiveloadinperpendiculardirection.Theexperimentalparametersarediametertothicknessratioofsteeltube(sDct)beamwidthtotubediameter(bBsD).Theloa

5、ddefmationrelationshipofconnectionstrainbehaviofcolumntubebeamflangeinfilledconcretearegotafterteststhemechanismsofstresstransferdefmationfailureofconnectionisanalyzedonthebasisofthesedata.Theeffectsofloadingfmationexper

6、imentalparametersarealsoinvestigated.ThentwospecimensareanalyzedbyFEM.TheFEMresultisconsistentwithtestdatafeasibilityofsimulationisproved.Furthermethemechanicalbehaviofconnectionespeciallytheyieldmechanismofcolumntubethe

7、effectofloadingdefmationisinvestigatedwithFEMresultsrationalityofestimatinglocaltensilestrengthwithyieldlinetheyisproved.Theyieldmechanismofcolumntubeisassumedonthebasisofanalysisabove.Circularcolumntubeisunwoundtoflatpl

8、atemodelfsimplification.Accdingtotheprincipiumofvirtualwktheinternalwkdonebycolumntubeequalstotheexternalwkdonebyloadingthenestimationftensileplasticultimatestrengthusingyieldlinetheyisproposed.Thecrespondingcalculationr

9、esultsareconsistentwithtest.Indertoapplythesefmulastoengineeringdesigntheinfluencesofmanufacturemethodofcolumntubeexperimentalparametersoncalculationresultsareanalyzedthenappliedcalculationfmulasfbendingstrengthofconnect