Publicación:
DAMPING ASSESSMENT OF LIGHTWEIGHT TIMBER FLOORS UNDER HUMAN WALKING EXCITATIONS

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dc.creatorALEXANDER IGOR OPAZO VEGA
dc.date2019
dc.date.accessioned2025-01-10T15:48:00Z
dc.date.available2025-01-10T15:48:00Z
dc.date.issued2019
dc.description.abstractVIBRATIONS ON TIMBER FLOORS ARE AMONG THE MOST COMMON SERVICEABILITY PROBLEMS IN SOCIAL HOUSING PROJECTS. THE PRESENCE OF LOW DAMPING LEVELS ON THESE FLOORS COULD CAUSE EXCESSIVE VIBRATIONS IN A RANGE OF FREQUENCY AND AMPLITUDE THAT GENERATE DISCOMFORT IN USERS. THIS STUDY FOCUSES ON THE INFLUENCE OF THE DAMPING RATIO IN THE DYNAMIC SERVICEABILITY OF SOCIAL HOUSING TIMBER FLOORS DUE TO WALKING EXCITATIONS. MORE THAN 60 HUMAN-WALKING VIBRATION TESTS WERE CONDUCTED ON BOTH LABORATORY AND IN-SITU TIMBER FLOORS. THE FLOORS WERE INSTRUMENTED WITH ACCELEROMETERS, AND FUNDAMENTAL MODAL DAMPING RATIOS WERE ESTIMATED BY APPLYING ENHANCED FREQUENCY DECOMPOSITION DOMAIN (EFDD) AND SUBSPACE STOCHASTIC IDENTIFICATION (SSI) METHODS. THE VIBRATION DOSE VALUE (VDV) WAS USED TO ESTIMATE THE DYNAMIC SERVICEABILITY OF FLOORS. THE RESULTS INDICATED THAT TIMBER FLOORS HAD AN IMPULSIVE-TYPE VIBRATION RESPONSE, WITH FUNDAMENTAL DAMPING RATIOS BETWEEN 1.9% AND 14.8%, DEPENDING ON THEIR CONSTRUCTIVE CHARACTERISTICS. THE IN-SITU FLOORS HAD DAMPING RATIOS BETWEEN TWO TO THREE TIMES GREATER THAN THE LABORATORY FLOORS DUE TO THE PRESENCE OF NON-STRUCTURAL ELEMENTS. FINALLY, IT WAS POSSIBLE TO DEMONSTRATE THAT THE FLOORS WITH THE HIGHEST DAMPING RATIOS REACHED LOWER VIBRATION DOSE VALUES AND, THEREFORE, A BETTER DYNAMIC SERVICEABILITY PERFORMANCE.
dc.formatapplication/pdf
dc.identifier.doi10.3390/app9183759
dc.identifier.issn2076-3417
dc.identifier.issn2076-3417
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/13707
dc.languagespa
dc.publisherApplied Sciences-Basel
dc.relation.uri10.3390/app9183759
dc.rightsPUBLICADA
dc.subjecttimber floor vibration
dc.subjectstructural damping
dc.subjectoperational modal analysis
dc.subjectdynamic serviceability
dc.titleDAMPING ASSESSMENT OF LIGHTWEIGHT TIMBER FLOORS UNDER HUMAN WALKING EXCITATIONS
dc.typeARTÍCULO
dspace.entity.typePublication
oaire.fundingReferenceUBB- UNIVERSIDAD DEL BÍO-BÍO
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE INGENIERIA CIVIL Y AMBIENTAL
ubb.SedeCONCEPCIÓN
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