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可恢复功能装配式梁柱中柱节点抗震性能研究（英文）.docx

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可恢复功能装配式梁柱中柱节点抗震性能研究（英文） Title:Studyonseismicperformanceofcolumnjointsinrecoverablefunctionalassembledbeamsandcolumns Introduction: Therecoverablefunctionalassembledbeamandcolumnsystemisanewtypeofstructuralsystemthatiswidelyusedinmodernconstructionduetoitsadvantagessuchasfastconstruction,energysaving,andenvironmentalprotection.However,theseismicperformanceofcolumnjointsinthissystemhasnotbeenfullystudied.Therefore,inordertoensurethesafetyandreliabilityofthestructureduringearthquakes,itisnecessarytothoroughlyinvestigatetheseismicperformanceofcolumnjointsinrecoverablefunctionalassembledbeamsandcolumns. Methodology: Inthisstudy,afiniteelementmodelwasestablishedtosimulatetheseismicperformanceofcolumnjointsinrecoverablefunctionalassembledbeamsandcolumns.Themodelwasvalidatedbycomparingthefiniteelementanalysisresultswiththeexperimentalresults.Theseismicperformanceofcolumnjointswasevaluatedbasedonseveralimportantparameters,includingtheultimatebearingcapacity,thestiffnessdegradation,andtheenergydissipationcapacity. Results: Thestudyfoundthattheseismicperformanceofcolumnjointsinrecoverablefunctionalassembledbeamsandcolumnswassignificantlyaffectedbythesizeandquantityofribs,thelength-to-thicknessratiooftheflangeplate,andthestrengthofthewelds.Theultimatebearingcapacityofthejointwasmainlyinfluencedbythecross-sectionshapeandtheconnectionmode,whilethestiffnessdegradationandenergydissipationcapacitywereprimarilyinfluencedbytheconnectionmodeandthethicknessoftheflangeplate.Inaddition,itwasfoundthattheseismicperformanceofcolumnjointswasimprovedbyincreasingthethicknessoftheflangeplateandthenumberofribs,whilereducingthelength-to-thicknessratiooftheflangeplate. Conclusion: Thestudyshowedthattheseismicperformanceofcolumnjointsinrecoverablefunctionalassembledbeamsandcolumnsisinfluencedbyvariousfactors,andthesizeandgeometricparametersofthejointplayasignificantroleindeterminingthejoint'sseismicperformance.Thefindingsofthisstudycanprovidevaluableguidanceforthedesignandoptimizationofcolumnjoints