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大跨度悬挑景观桥人致振动及控制研究 Abstract: Inrecentyears,withtheincreasingpopularityoftourismaroundtheworld,theconstructionoftouristattractionshasbecomemoreandmoreimportant.Amongthem,theconstructionoflarge-spancantileveredlandscapebridgesisverypopular.However,duetotheuniquestructuralcharacteristicsoflandscapebridges,theproblemofhuman-inducedvibrationhasbecomeoneofthemostcriticalissuesaffectingthesafeandcomfortableuseofsuchbridges.Thisstudyanalyzedthecharacteristicsofhuman-inducedvibrationsonlarge-spancantileveredlandscapebridgesandexploredseveraleffectivemeasurestocontrolthesevibrations. Keywords:large-spancantileveredlandscapebridges;human-inducedvibration;controlmeasures Introduction: Theconstructionoflarge-spancantileveredlandscapebridgeshasbecomeanimportanttrendintourismdevelopmentinrecentyears.Thedesignandconstructionofthesebridgeshavechallengedtheengineeringcapabilitiesofmodernarchitectsandcivilengineers.However,afterthesebridgeshavebeenputintouse,theproblemofhuman-inducedvibrationshasbecomeoneofthemostconcerningissues.Human-inducedvibrationsaremainlycausedbycrowdsofpeoplewalkingonthebridge'ssurface,theinclinedcable,andthepylon.Human-inducedvibrationscanaffectthesafetyandcomfortofthebridge,leadingtoalossofconfidenceinthepublic'smind.Therefore,howtoeffectivelycontrolhuman-inducedvibrationsonlarge-spancantileveredlandscapebridgeshasbecomeanurgentresearchtopic. AnalysisofHuman-InducedVibrationonLarge-SpanCantileveredLandscapeBridges: Themaincauseofhuman-inducedvibrationisthedynamicloadbroughtaboutbypeople'sactivitiesonthebridge.Whenpeoplewalkonbridges,theygeneratevertical,horizontal,andtorsionalforcesonthebridge'sdeck,inclinedcable,andpylon.Thebridgestructure'snaturalfrequencywillcausevibrationwhenitresonateswiththeexternalforce.Thisresonancecancauselargeamplitudevibrations,whichcanevenleadtobridgecollapse. EffectiveMeasurestoControlHuman-InducedVibrationonLarge-SpanCantileveredLandscapeBridges: 1.Strengthenthebridge'snaturalfrequency:Increasingthenaturalfrequencyisafundamental