Evaluating vibrations on a small-scale model of a timber footbridge

In Brazil, the study of pedestrian-induced vibration on footbridges has been undertaken since the early 1990s, for concrete and steel footbridges. However, there are no recorded studies of this kind for timber footbridges. Brazilian code ABNT NBR 7190 (1997) gives design requirements only for static...

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Autores principales:	de Alcântara Segundinho,Pedro Gutemberg, Alves Dias,Antonio, Carreira,Marcelo Rodrigo
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2011
Materias:	Timber footbridges pedestrian-induced vibrations serviceability limit state small-scale model
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000200002
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spelling	oai:scielo:S0718-221X20110002000022011-08-24Evaluating vibrations on a small-scale model of a timber footbridgede Alcântara Segundinho,Pedro GutembergAlves Dias,AntonioCarreira,Marcelo Rodrigo Timber footbridges pedestrian-induced vibrations serviceability limit state small-scale model In Brazil, the study of pedestrian-induced vibration on footbridges has been undertaken since the early 1990s, for concrete and steel footbridges. However, there are no recorded studies of this kind for timber footbridges. Brazilian code ABNT NBR 7190 (1997) gives design requirements only for static loads in the case of timber footbridges, without considering the serviceability limit state from pedestrian-induced vibrations. The aim of this work is to perform a theoretical dynamic, numerical and experimental analysis on simply-supported timber footbridges, by using a small-scale model developed from a 24 m span and 2 m width timber footbridge, with two main timber beams. Span and width were scaled down (1:4) to 6 m e 0.5 m, respectively. Among the conclusions reached herein, it is emphasized that the Euler-Bernoulli beam theory is suitable for calculating the vertical and lateral first natural frequencies in simply-supported timber footbridges; however, special attention should be given to the evaluation of lateral bending stiffness, as it leads to conservative values.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.13 n.2 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000200002en10.4067/S0718-221X2011000200002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Timber footbridges pedestrian-induced vibrations serviceability limit state small-scale model
spellingShingle	Timber footbridges pedestrian-induced vibrations serviceability limit state small-scale model de Alcântara Segundinho,Pedro Gutemberg Alves Dias,Antonio Carreira,Marcelo Rodrigo Evaluating vibrations on a small-scale model of a timber footbridge
description	In Brazil, the study of pedestrian-induced vibration on footbridges has been undertaken since the early 1990s, for concrete and steel footbridges. However, there are no recorded studies of this kind for timber footbridges. Brazilian code ABNT NBR 7190 (1997) gives design requirements only for static loads in the case of timber footbridges, without considering the serviceability limit state from pedestrian-induced vibrations. The aim of this work is to perform a theoretical dynamic, numerical and experimental analysis on simply-supported timber footbridges, by using a small-scale model developed from a 24 m span and 2 m width timber footbridge, with two main timber beams. Span and width were scaled down (1:4) to 6 m e 0.5 m, respectively. Among the conclusions reached herein, it is emphasized that the Euler-Bernoulli beam theory is suitable for calculating the vertical and lateral first natural frequencies in simply-supported timber footbridges; however, special attention should be given to the evaluation of lateral bending stiffness, as it leads to conservative values.
author	de Alcântara Segundinho,Pedro Gutemberg Alves Dias,Antonio Carreira,Marcelo Rodrigo
author_facet	de Alcântara Segundinho,Pedro Gutemberg Alves Dias,Antonio Carreira,Marcelo Rodrigo
author_sort	de Alcântara Segundinho,Pedro Gutemberg
title	Evaluating vibrations on a small-scale model of a timber footbridge
title_short	Evaluating vibrations on a small-scale model of a timber footbridge
title_full	Evaluating vibrations on a small-scale model of a timber footbridge
title_fullStr	Evaluating vibrations on a small-scale model of a timber footbridge
title_full_unstemmed	Evaluating vibrations on a small-scale model of a timber footbridge
title_sort	evaluating vibrations on a small-scale model of a timber footbridge
publisher	Universidad del Bío-Bío
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000200002
work_keys_str_mv	AT dealcantarasegundinhopedrogutemberg evaluatingvibrationsonasmallscalemodelofatimberfootbridge AT alvesdiasantonio evaluatingvibrationsonasmallscalemodelofatimberfootbridge AT carreiramarcelorodrigo evaluatingvibrationsonasmallscalemodelofatimberfootbridge
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Evaluating vibrations on a small-scale model of a timber footbridge

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