考慮壓彎剪相互作用的鋼筋混凝土柱性能研究

1、湖南大學(xué)碩士學(xué)位論文考慮壓彎剪相互作用的鋼筋混凝土柱性能研究姓名：尹智勇申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：易偉建20120524碩士學(xué)位論文AbstractColumnsarekeycomponentsinreinforcedconcrete(RC)structuresresistingverticalandlateralloadsTheyareusuallysubjectedtothecombinedloadsofaxial，

2、shearandflexureInthecurrentstructuraldesignmethodology，onlythebearingcapacityshouldbesatisfied，however，inperformancebaseddesignmethodology，displacementbasedconceptshouldalsobetakenintoconsiderationTherefore，itisimperativ

3、etochooseanappropriatemethodtoassesstheloaddisplacementperformanceofthestructureThisthesisimprovestheaxialshearflexureinteraction(ASFI)approach，usesthemodifiedmethodwithOpenSees，andfinally，makesaexplorationofthisevaluati

4、onmethodCalculationprinciplesofthefibermodel，modifiedcompressionfieldtheory(MCFT)andASFIarecomparedResultsshowthatASFIcanmakeareasonableassessmentforbothflexurebehaviorandshearbehavior，butitsexistedprocedureisunstableand

5、itisdifficulttoconvergeTherefore，thecalculationprocedureismodifiedbyreducingtheloopvariables，unifyingparameters，reselectingtheconstitutiverelationsofconcreteandsteelbarsUsingthisnewprocedure，anexistingexampleisrecalculat

6、edandfivereinforcedconcretecolumnsareanalyzedResultsshowthatthemodifiedprocedureisreasonableThecalculatedloaddisplacementcurvesoffivecolumnsagreewiththeexperimentalcurvesverywellRCcolumnsarecalculatedusingOpenSeesanditsr

7、esultsarecomparedwithtestdataResultsshowthatforaflexurefailurecolumn，OpenSeessimulatetheload—displacementcurveswell，butforashearfailureone，itcannotagreewithtestresultofcapacity，deformation，ductility，andetc，becauseofitsla

8、ckingconsiderationoftheimpactofshearbehaviorThisthesisaddsatrilinearmodel，whichisaequivalentofshear—sheardeformationcurvecalculatedbyASFI，intoOpenSeesprocedureResultsshowthatOpenSeeswiththismodelcansimulatetheload—displa

9、cementcurvesofcolumnsoccuringshearfailureBydefiningthereloadingandunloadingparametersofthehystereticmaterial，thetrendofthecalculatedhystereticcurvesiSconsistentwithtestcurvesKeyWords：RCColumns；FiberModel；ModifiedCompress