不同轴压比下玻化微珠保温混凝土柱抗震性能试验-研究

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1、万方数据太原理工大学硕士研究生学位论文modulus．2．Lowcyclicloadingtestsoffourframecolumnsarcdone．Thefourcolumnsarethesamesizeandreinforcementratio．Andthreeofthemismadeofthethermalinsulationglazedhollowbeadconcretebuttheotheroneismadeofordinaryconcreteascompared．TheaxialCompressionratioaredesi

2、gnedas0．05，O．20and0．35forthem．Theresultsshowthatthecrackofthespecimenismainlyhorizontalfractures．Andtheaxialcompressionratioissmaller,thecrackdevelopingupwardishigher．Inshort，thefailuremodeofthespecimensbelongstobendingfailure．3．Itcangetthedifferenceofbearingcapacityandse

3、ismicperformancebetweenthethermalinsulationglazedhollowbeadconcretecolumnsandtheordinaryconcretecolumnbyprocessingtheexperimentaldata．Fromtheresultitcanalsogetbearingcapacity,hysteresischaracteristics，skeletoncurve，ductilitycoefficient，energydissipationcapacitybasedonwhic

4、hcanstudyontheinfluenceofaxialcompressionratioontheseismicperformanceofthethermalinsulationglazedhollowbeadconcretecolumnsandgivesomedesignproposals．Theanalysisresultsshowthatcomparedwiththeordinaryconcretecolumnthebearingcapacityofthermalinsulationglazedhollowbeadconcret

5、ecolumnisalmostthesame；ductilitycoefficientisincreasedby19．35percentandthetotalenergyconsumptionisincreasedby16percent．What’Smore，thehysteresisloopismoreplumpandthedescendingsegmentoftheskeletoncurveismoregentle．Aboveall，thethermalinsulationglazedhollowbeadconcreteismores

6、uitableforusinginseismicstructures．WhentheaxialcompressionratioisbetweenO．05and0．35，thelargertheaxialcompressionratiois，thelargerthebearingcapacityis，thesmallertheductilitycoefficientis，andtheworsetheenergydissipationcapacityis．4．ThefourspecimensaresimulatedbyABAQUSwhichi

7、sakindofnonlinearfiniteelementanalysissoftware．Thecorrectnessofmodelparametersandthereliabilityoffiniteelementanalysisare’checkedbycomparingtherV万方数据太原理工大学硕士研究生学位论文simulationresultsandtestresults．Afterthattheotherthreethermalinsulationglazedhollowbeadconcretecolumnswithax

8、ialcompressionratioof0．10．0．30and0．40aresimulatedusingthecheckedmodel．Comprehensivelyconsidering