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海洋服役环境下钢--FRP复合筋混凝土柱大偏心受压性能研究 Title:ExperimentalStudyontheCompressivePerformanceofSteel-FRPCompositeReinforcedConcreteColumnswithHighEccentricityunderMarineServiceEnvironment Abstract: Theobjectiveofthisresearchistoinvestigatethecompressiveperformanceofsteel-FRPcompositereinforcedconcrete(CFRP)columnswithhigheccentricityundertheharshmarineserviceenvironment.TheuseofCFRPreinforcementinmarinestructurescanofferimproveddurability,corrosionresistance,andenhancedstructuralperformance. Introduction: Marinestructuresareconstantlysubjectedtoharshenvironmentalconditionssuchassaltwaterexposure,waveaction,andabrasionfromfloatingdebris.Thesefactorscansignificantlydeterioratethestructuralintegrityandservicelifeoftraditionalreinforcedconcrete(RC)columns.Theincorporationofsteel-FRPcompositereinforcementcanmitigatesomeofthesechallengesandenhancetheoverallperformanceofmarinestructures. LiteratureReview: PreviousstudieshaveinvestigatedtheuseofCFRPreinforcementsindifferentapplications,includingtheseismicretrofittingofRCcolumns,flexuralstrengtheningofRCbeams,andconfinementofRCcolumns.However,limitedresearchhasbeenconductedonevaluatingtheperformanceofsteel-FRPcompositereinforcedconcretecolumnswithhigheccentricityundermarineserviceenvironments.Thisstudyaimstobridgethisresearchgapandprovidevaluableinsightsintothebehaviorofsuchcolumns. Methodology: Anexperimentalprogramwillbeconductedtoinvestigatethecompressiveperformanceofsteel-FRPcompositereinforcedconcretecolumnswithhigheccentricity.AseriesofcolumnspecimenswillbefabricatedusingdifferentcombinationsofsteelandCFRPreinforcementandexposedtosimulatedmarineenvironments.Thespecimenswillundergocyclicloadingwithvaryingeccentricitiestoassesstheirperformanceunderdifferentserviceconditions. ResultsandDiscussion: Theexperimentalresultswillbeanalyzedtoevaluatetheeffectofvaryingeccentricitiesontheload-carryingcapacity,deformationcharacteristics,andfailuremodesofthesteel-FRPcompositereinforcedconcretecolumns.Theperformanceofthecolumnswillbecomparedwitht