Study on vertical vibration control of long-span steel footbridge with tuned mass dampers under pedestrian excitation

Wang, D; Wu, C; Zhang, Y; Li, S

Study on vertical vibration control of long-span steel footbridge with tuned mass dampers under pedestrian excitation

Wang, D Wu, C

Zhang, Y Li, S

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Publication Type:: Journal Article
Citation:: Journal of Constructional Steel Research, 2019, 154 pp. 84 - 98
Issue Date:: 2019-03-01

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Field	Value	Language
dc.contributor.author	Wang, D	en_US
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934	en_US
dc.contributor.author	Zhang, Y	en_US
dc.contributor.author	Li, S	en_US
dc.date.accessioned	2020-04-01T05:25:20Z
dc.date.available	2020-04-01T05:25:20Z
dc.date.issued	2019-03-01	en_US
dc.identifier.citation	Journal of Constructional Steel Research, 2019, 154 pp. 84 - 98	en_US
dc.identifier.issn	0143-974X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/139708
dc.description.abstract	© 2018 Elsevier Ltd This paper aims to study crowd-induced vibration control of long-span steel footbridges with different dynamic characteristics by combining methods of site measurement and numerical simulation. Four kinds of footbridge models with sensitive vertical natural frequencies of easily generating human-bridge resonance under pedestrian loading are designed based on an actual steel footbridge. The numerical models are firstly validated by comparative investigation between the site measurement and the simulation. Detailed study on dynamic responses of the four footbridges with and without controlling systems of tuned mass damper (TMD) and multiple tuned mass damper (MTMD) is then conducted under 13 cases of crowd random excitations, rhythmic running and jumping excitations. Results show that the numerical simulation agrees well with the site measurement data. TMD system is found to be highly efficient in reducing vibration responses only when the excitation frequency is basically consistent with the structural natural frequency, which obviously limits the application of TMD system in footbridges as wider excitation frequency bandwidth is caused by human activities. MTMD system are demonstrated to be with higher vibration absorption robustness appearing predominant and stable capacity of reducing structural vibrations under all the crowd random and rhythmic excitations for the four footbridges.	en_US
dc.relation.ispartof	Journal of Constructional Steel Research	en_US
dc.relation.isbasedon	10.1016/j.jcsr.2018.11.021	en_US
dc.subject.classification	Civil Engineering	en_US
dc.title	Study on vertical vibration control of long-span steel footbridge with tuned mass dampers under pedestrian excitation	en_US
dc.type	Journal Article
utslib.citation.volume	154	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0915 Interdisciplinary Engineering	en_US
utslib.for	1202 Building	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	154	en_US

Abstract:

© 2018 Elsevier Ltd This paper aims to study crowd-induced vibration control of long-span steel footbridges with different dynamic characteristics by combining methods of site measurement and numerical simulation. Four kinds of footbridge models with sensitive vertical natural frequencies of easily generating human-bridge resonance under pedestrian loading are designed based on an actual steel footbridge. The numerical models are firstly validated by comparative investigation between the site measurement and the simulation. Detailed study on dynamic responses of the four footbridges with and without controlling systems of tuned mass damper (TMD) and multiple tuned mass damper (MTMD) is then conducted under 13 cases of crowd random excitations, rhythmic running and jumping excitations. Results show that the numerical simulation agrees well with the site measurement data. TMD system is found to be highly efficient in reducing vibration responses only when the excitation frequency is basically consistent with the structural natural frequency, which obviously limits the application of TMD system in footbridges as wider excitation frequency bandwidth is caused by human activities. MTMD system are demonstrated to be with higher vibration absorption robustness appearing predominant and stable capacity of reducing structural vibrations under all the crowd random and rhythmic excitations for the four footbridges.

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http://hdl.handle.net/10453/139708