CFRP加固混凝土方柱的試驗研究及有限元分析.pdf

1、湖北工業(yè)大學碩士學位論文CFRP加固混凝土方柱的試驗研究及有限元分析姓名：竇俊申請學位級別：碩士專業(yè)：結構工程指導教師：蘇駿20080501湖北工業(yè)大學碩士學位論文AbstractTheCarbonFiberReinforcedPolymer(CFRP)confinedconcretestructurehasdevelopedrapidlysincethelater1990swhenitsapplicationandresearchbe

2、gun，andagreatdealofvaluableresultshavebeenobtainedHoweverthereinforcedmechanismwasnotresolvedwellandmanyWOrthfulresearchtopicsremainexsitingBasedonthereviewingofdomesticandoverseasreinforcedmethods，thecurrentproblemsofre

3、inforcedmethodswerepointedoutandtheadvantagesofCFRPweresummarizedBasedonthetestdata。thereinforcedeffectofCFRPconfinedconcretesquarecolumnwereanalyzedThereinforcedmechanismofCFI之Pconfinedconcretecolumnandotherproblemshave

4、beenextensivelyinvestigatedfromthetheoreticsandfiniteelementanalysisoftwoaspectswithdifferentreinforcedquantitiesThemainstudiesanditSconclusionsareasfollows：f1)ThetestofCFRPconfinedconcretecolumnswascarriedoutTheaxialcom

5、pressiontestanalysisofsevenpiecesofspecimensofCFRPconfinedreinforeedconcretecolumnsandonereinforcedcolumnwithoutCFRPindicatedthatthecapacityandtensilityhavebeenprominentlyenhanced；whenthereinforcedrateofacolumnwasequival

6、enttotheotherone，theeffectofslippingshapereinforcementwasbetterthanwholesectionreinforcement；withtheincreasementofthereinforcedratepeakstress，peakstrain，limitstress，limitstrainareallimprovedandthedeclineofaxialstress—str

7、aincurvegrowsmoreflattening(2)AnalysisoftestdataalsoindicatedthatthestrainofCFI沖wasmaldistributionduringtheincreasingloadofCFRPconfinedconcretecolumnthestrainofCFRPwhichwasonthemidpointofthesectionwaslargest，thestrainofC

8、FRPwhichwasonthecomerofthesectionwassmallest，thestrainofCFRPwasgraduallygettingsmallerfromthemidpointofthesectiontothecorner；thesectionofreinforeedsquarecolumncanbedividedtoeffectiveandineffectiveconfinedareathedistribut

9、edlawofeffectiveandineffectiveconfinedareawasobtained(3)ComparedtheresultswhichcomesfromthefiniteelementSOftwareANSYSsimulatedCFRPreinforcedconcretesquarecolumnwiththeresultswhichcomesfromthetestthatverificatedthecomputi

10、ngmodelwasreasonableBasedonthefiniteelementcalculatedresultsadetailedresearchoftheloadingmechanismandlimitreinforcedrateofCFRPconfinedconcretesquarecolumnwascarriedon，andasimpleanalysisforthecomercurvatureradiusaffectedt

11、heringingstressofsurroundingCFRPwascarriedon(4)Basedonnumericalsimulationandotherscholars’achievements1ateralconfinedstressofCFRPandaxialcompressionlimitcapacityformulawereobtainedaftercheckingcomputions，theresultsdispla