Vibration damping in road bridges – two case studies of full scale experiments

Vibration damping in road bridges – two case studies of full scale experiments

The paper presents the results of a vibration damping analysis of two road viaducts. The analysis was based on displacement signals recorded during the dynamic load tests carried out before an acceptance process of the viaducts. To create an additional excitation, a 5 cm high threshold was located o...

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Main Authors: Szynal Daniel, Janas Lucjan
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:MATEC Web of Conferences
Online Access:https://www.matec-conferences.org/articles/matecconf/pdf/2019/34/matecconf_dynkon18_00019.pdf
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spelling doaj-3f197759cb2545f0bcaf92804d40c2a42021-03-02T09:58:03ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-012850001910.1051/matecconf/201928500019matecconf_dynkon18_00019Vibration damping in road bridges – two case studies of full scale experimentsSzynal Daniel0Janas Lucjan1Rzeszow University of Technology, The Faculty of Civil and Environmental Engineering and ArchitectureRzeszow University of Technology, The Faculty of Civil and Environmental Engineering and ArchitectureThe paper presents the results of a vibration damping analysis of two road viaducts. The analysis was based on displacement signals recorded during the dynamic load tests carried out before an acceptance process of the viaducts. To create an additional excitation, a 5 cm high threshold was located on the road during low-velocity passages. The Logarithmic Decrement (LD) was calculated using an exponential curve fit to free vibration amplitudes. A fundamental frequency of vibration was considered. To minimize the influence of signal imperfections, a filtration process was carried out using bandpass Infinite Impulse Response (IIR) Bessel filter. The results were correlated for various degrees of excitation resulting from different velocities of loading vehicles and the presence of the threshold. Examples of appropriate and inadequate signals for the damping analysis were shown.https://www.matec-conferences.org/articles/matecconf/pdf/2019/34/matecconf_dynkon18_00019.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Szynal Daniel
Janas Lucjan
spellingShingle Szynal Daniel
Janas Lucjan
Vibration damping in road bridges – two case studies of full scale experiments
MATEC Web of Conferences
author_facet Szynal Daniel
Janas Lucjan
author_sort Szynal Daniel
title Vibration damping in road bridges – two case studies of full scale experiments
title_short Vibration damping in road bridges – two case studies of full scale experiments
title_full Vibration damping in road bridges – two case studies of full scale experiments
title_fullStr Vibration damping in road bridges – two case studies of full scale experiments
title_full_unstemmed Vibration damping in road bridges – two case studies of full scale experiments
title_sort vibration damping in road bridges – two case studies of full scale experiments
publisher EDP Sciences
series MATEC Web of Conferences
issn 2261-236X
publishDate 2019-01-01
description The paper presents the results of a vibration damping analysis of two road viaducts. The analysis was based on displacement signals recorded during the dynamic load tests carried out before an acceptance process of the viaducts. To create an additional excitation, a 5 cm high threshold was located on the road during low-velocity passages. The Logarithmic Decrement (LD) was calculated using an exponential curve fit to free vibration amplitudes. A fundamental frequency of vibration was considered. To minimize the influence of signal imperfections, a filtration process was carried out using bandpass Infinite Impulse Response (IIR) Bessel filter. The results were correlated for various degrees of excitation resulting from different velocities of loading vehicles and the presence of the threshold. Examples of appropriate and inadequate signals for the damping analysis were shown.
url https://www.matec-conferences.org/articles/matecconf/pdf/2019/34/matecconf_dynkon18_00019.pdf
work_keys_str_mv AT szynaldaniel vibrationdampinginroadbridgestwocasestudiesoffullscaleexperiments
AT janaslucjan vibrationdampinginroadbridgestwocasestudiesoffullscaleexperiments
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