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ID:34308359
大小:16.04 MB
页数:81页
时间:2019-03-04
《不同轴压比下玻化微珠保温混凝土柱抗震性能试验研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
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
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