方鋼管混凝土柱抗震性能試驗研究.pdf

1、天津大學碩士學位論文方鋼管混凝土柱抗震性能試驗研究姓名：黃曉宇申請學位級別：碩士專業(yè)：結構工程指導教師：王鐵成20041201ABSTRACTConcrete—filledsteelrectangulartubular(CFRT)columnsarebecomingmoreandmorewidespreadstructuralapplicationsinseismicregion，becausetheyhavetheadvantages

2、ofbeuerstabilityandcarryingcapacitysimpleconnectionsbetweencolumnsandbeams，convenientconstruction，regularshapeandexcellentearthquakeresistantpropertiesNowmanycountrieshavecarriedalotofresearchonseismicbehaviorofCFRTbutth

3、eeffectofseismicbehaviorisbasedOilasingleexperimentalfactorfewreportisabouttheexperimentalresearchbyusingorthogonaldesignmethod，SOitisimportantinresearchoftheperformanceofCFRTstructureinearthquakeconditionsInthispapernin

4、econcrete—filledrectangularsteeltubularcolumnsarestudiedundercyclichorizontalloadingThecharcteristicsofitsfailure，capacityofloading，distortion，energyabsorptionandpropertiesofrigiditydegradationarestudiedUsedanalysisofvar

5、iance，thebestcombinationamongaxialcompressionratio，steelratioandslendernessratioiSfoandTheresultsofthisexperimentindicated：(1)thehystereticcurvesofCFRTcolunmsareplumpinshapes，andhavenosignificantpinchphenomenonCFRTcolumn

6、shavemorehighhorizontalcapacityandbeRerdeformationundercyclicloading(2)TheintensitydegradationofCFRTcolumnsissmooth(3)Analyzedductilitycoefficient，axialcompressionratio，steelratioandslenderness—ratioaresignificantfactors

7、onearthquakeresistantpropertiesSteelratioisthefirstinfluentialfactor，axialcompressionratioisthesecondinfluentialfactorslenderness—ratioisthethirdinfluentialfactorThebestcombinationofearthquakeresistantpropertiesisA】B2C3，

8、thatistOsayaxialcompressionrationequalsonepointtwo，slenderness—ratioAequalsseventeenpointsixtysteelratioaequalszeropointonehundredeightyoneKEYWORDS：Concretefilledsteelrectangulartubular(CFRT)column，hystersisbehavioraxial