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．TheaxialCompressionratioaredesign

2、edas0．05，O．20and0．35forthem．Theresultsshowthatthecrackofthespecimenismainlyhorizontalfractures．Andtheaxialcompressionratioissmaller,thecrackdevelopingupwardishigher．Inshort，thefailuremodeofthespecimensbelongstobendingfailure．3．Itcangetthedifferenceofbearingcapacityandseismi

3、cperformancebetweenthethermalinsulationglazedhollowbeadconcretecolumnsandtheordinaryconcretecolumnbyprocessingtheexperimentaldata．Fromtheresultitcanalsogetbearingcapacity,hysteresischaracteristics，skeletoncurve，ductilitycoefficient，energydissipationcapacitybasedonwhichcanst

4、udyontheinfluenceofaxialcompressionratioontheseismicperformanceofthethermalinsulationglazedhollowbeadconcretecolumnsandgivesomedesignproposals．Theanalysisresultsshowthatcomparedwiththeordinaryconcretecolumnthebearingcapacityofthermalinsulationglazedhollowbeadconcretecolumni

5、salmostthesame；ductilitycoefficientisincreasedby19．35percentandthetotalenergyconsumptionisincreasedby16percent．What’Smore，thehysteresisloopismoreplumpandthedescendingsegmentoftheskeletoncurveismoregentle．Aboveall，thethermalinsulationglazedhollowbeadconcreteismoresuitablefor

6、usinginseismicstructures．WhentheaxialcompressionratioisbetweenO．05and0．35，thelargertheaxialcompressionratiois，thelargerthebearingcapacityis，thesmallertheductilitycoefficientis，andtheworsetheenergydissipationcapacityis．4．ThefourspecimensaresimulatedbyABAQUSwhichisakindofnonl

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

8、ratioof0．10．0．30and0．40aresimulatedusingthecheckedmodel．Comprehensivelyconsidering