frp管混凝土钢管组合短柱轴压性能有限元分析

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1、万方数据GFRP管．混凝土-钢管组合短柱轴压性能有限元分析FiniteElementAnalysisonAxialCompressionBehaviorofHybridFRP—Concrete—SteelShortCompositeColumnsAbstractTherapiddevelopmentofchineseeconomymakesnewdemandsoncivilengineeringfield，andthecivilengineeringconstructionwilldeveloptowardsthedirectionofaseriesoflaegecivilconstructi

2、on，suchaLSsuper-highbuidings、largespanbridges、superlongtunnelandSOon．Atthesametime，FiberReinforcedPolymer(calledFRP)hasbeenresearchedandappliedincivilengineeringfield．Inthiscontext，somenewkindsofcombinedmemberincludingFiberReinforcedPolymerhavebeenputforwardconstantly．FRP—concrete-steeldouble-skintu

3、bularcolumnpresentedbyProf．J．G．TengintheHongKongPolytechnicUniversityconsistsoftheouterFI强tube、theinnersteeltubeandtheconcretebetweenthemanditiSanewkindofcombinedmember．Ithastheadvantagesofgooddurability、hi曲bearingcapacityandgoodductility．Atpresent，researchresultsaboutthenewkindofcombinedmemberarein

4、sufficiency，SOthefollowingseveralworksaredonetoexplore也eaxialcompressionbehaviorof也enewkindofcombinedmember．(1)SixFRP—concrete—steelsoliddouble—skintubularshortcolumnssubjectedtoaxialcompressiveloadsweretested．Theinfluenceontheaxialcompressionbehaviorinthecompositecolumnformlodingmethods、thethicknis

5、sandspeciesofsandwichconcretewerestudied．(2)nleaxialcompressivetestsoftheabovesixspecimensweresimulatedbythefiniteelementsoftwareANSYS．TheresultsshowthatthesoftwareANSYScansimulatetheaxialcompressivebehaviorofthecompositecolumnwellbyrationalselectionoft11eelementtypes、materialproperties、thewaytomesh

6、ingandSOon．(3)Basedontheestablishedfiniteelementmodel，someparameterssuchasthethicknissofGFRPtube、thicknissandstrengthofsteeltubeandthes仃engthofsandwichconcretewerestudiedtoexploretheimpactoftheminthesolidcompositecolumnsandthehollowcompositecolumnswhilesomeparameterssuchasthes订engthofsteeltube、thes仃

7、engthofsandwichconcreteandthes仃engthofcoreconcretewerestudiedtoexploretheimpactoftheminthesolidcompositecolumnswithdifferentlodingmodesoffull．sectionalloadingmethodandcorelodingmethod．万方数据大连理工大学硕士学位论文