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基于频域和时域的索网幕墙结构风振响应 Abstract Withtherapiddevelopmentofmodernarchitecture,claddingstructures,suchascablenetfacades,arebecomingmoreandmorepopularinconstruction.However,thesestructuresarehighlysusceptibletowind-inducedvibrations,whichcancausediscomforttooccupantsandevenstructuraldamage.Inthispaper,thewind-inducedvibrationsofacablenetfacadesystemareanalyzedusingfrequency-domainandtime-domainmethods.Thedynamicresponseofthesystemisevaluatedbyanalyzingitsnaturalfrequencies,modeshapes,anddampingratios.Theresultsoftheanalysisprovidevaluableinsightsintothebehaviorofcablenetfacadesunderwind-inducedloadsandcanbeusedforthedesignandoptimizationofsimilarstructures. Introduction Cablenetfacadesarecladdingsystemsthatconsistofanetworkofcablesandrodsthatsupportaflexiblemembrane,commonlymadeofsteelorETFE.Thesestructuresareoftenusedinmodernarchitecturetocreatevisuallystunningfacadesandtoprovidenaturalventilationanddaylighting.However,thesestructuresarealsohighlyflexibleandcanbepronetowind-inducedvibrations,whichcanimpactthecomfortofoccupantsandresultinfatiguedamagetothestructureovertime. Wind-inducedvibrationsareacomplexphenomenonthatdependsonseveralfactors,suchaswindspeed,direction,turbulenceintensity,andthedynamiccharacteristicsofthestructure.Therefore,reliablepredictionofthewind-inducedvibrationsofcablenetfacadesrequiresathoroughunderstandingofthesefactorsandtheuseofappropriateanalysismethods. Inthispaper,thewind-inducedvibrationsofacablenetfacadeareanalyzedusingfrequency-domainandtime-domainmethods.Thedynamicresponseofthesystemunderdifferentwindspeedsandturbulenceintensitiesisevaluated,providinginsightsintothebehaviorofcablenetfacadesunderwind-inducedloads. AnalysisMethodology Frequency-DomainAnalysis Thefrequency-domainanalysisisamethodofanalyzingthedynamicbehaviorofastructureunderharmonicloads.Inthismethod,thestructuralresponseisrepresentedintermsofitsnaturalfrequencies,modeshapes,anddampingratios.Theequationsofmotionaresolvedusingatransfermatrixmethod,andthesolutionisobtainedinthe