Identification of a Steel Stairs by Operational Vibration Measurement

Abstract: This work presents the results of structural evaluations carried out from numerical models based on the finite element method (FEM) for a steel stair with 22.70 meters long, 8.37 high and 1.68 wide, belonging to Olympic Tennis Center, Rio de Janeiro/Brazil. A numerical model was elaborated...

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Autores principales:	Campos,M., Martins,C., Fonseca,R.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Departamento de Ingeniería y Gestión de la Construcción 2021
Materias:	Operational Modal Analysis Finite element method Numeric model calibration Signal processing Natural frequencies.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-50732021000100059
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spelling	oai:scielo:S0718-507320210001000592021-05-28Identification of a Steel Stairs by Operational Vibration MeasurementCampos,M.Martins,C.Fonseca,R. Operational Modal Analysis Finite element method Numeric model calibration Signal processing Natural frequencies. Abstract: This work presents the results of structural evaluations carried out from numerical models based on the finite element method (FEM) for a steel stair with 22.70 meters long, 8.37 high and 1.68 wide, belonging to Olympic Tennis Center, Rio de Janeiro/Brazil. A numerical model was elaborated and fitted to natural frequencies of real structure, which in turn were obtained from an operational modal test. The test was conduced by recording vibrations due to wind and traffic of people at six points over the structure, and from stochastic signals processing of these data considering frequency domain decomposition (FDD) procedure, the experimental natural frequencies were extracted. The calibrated numerical model was then used in the structural evaluation for static and dynamic loads, and it was observed that while the structural behavior obtained through the initial numerical model (used in the development of the project) indicated compliance with design codes criteria, calibrated model pointed out the need for structural reinforcement to meet vibrations service limit.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Departamento de Ingeniería y Gestión de la ConstrucciónRevista ingeniería de construcción v.36 n.1 20212021-04-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-50732021000100059en10.4067/S0718-50732021000100059
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Operational Modal Analysis Finite element method Numeric model calibration Signal processing Natural frequencies.
spellingShingle	Operational Modal Analysis Finite element method Numeric model calibration Signal processing Natural frequencies. Campos,M. Martins,C. Fonseca,R. Identification of a Steel Stairs by Operational Vibration Measurement
description	Abstract: This work presents the results of structural evaluations carried out from numerical models based on the finite element method (FEM) for a steel stair with 22.70 meters long, 8.37 high and 1.68 wide, belonging to Olympic Tennis Center, Rio de Janeiro/Brazil. A numerical model was elaborated and fitted to natural frequencies of real structure, which in turn were obtained from an operational modal test. The test was conduced by recording vibrations due to wind and traffic of people at six points over the structure, and from stochastic signals processing of these data considering frequency domain decomposition (FDD) procedure, the experimental natural frequencies were extracted. The calibrated numerical model was then used in the structural evaluation for static and dynamic loads, and it was observed that while the structural behavior obtained through the initial numerical model (used in the development of the project) indicated compliance with design codes criteria, calibrated model pointed out the need for structural reinforcement to meet vibrations service limit.
author	Campos,M. Martins,C. Fonseca,R.
author_facet	Campos,M. Martins,C. Fonseca,R.
author_sort	Campos,M.
title	Identification of a Steel Stairs by Operational Vibration Measurement
title_short	Identification of a Steel Stairs by Operational Vibration Measurement
title_full	Identification of a Steel Stairs by Operational Vibration Measurement
title_fullStr	Identification of a Steel Stairs by Operational Vibration Measurement
title_full_unstemmed	Identification of a Steel Stairs by Operational Vibration Measurement
title_sort	identification of a steel stairs by operational vibration measurement
publisher	Pontificia Universidad Católica de Chile. Departamento de Ingeniería y Gestión de la Construcción
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-50732021000100059
work_keys_str_mv	AT camposm identificationofasteelstairsbyoperationalvibrationmeasurement AT martinsc identificationofasteelstairsbyoperationalvibrationmeasurement AT fonsecar identificationofasteelstairsbyoperationalvibrationmeasurement
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Identification of a Steel Stairs by Operational Vibration Measurement

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