Impact factors for curved continuous CFST truss girder bridges

Zhu, X; Wang, HL

Impact factors for curved continuous CFST truss girder bridges

Zhu, X

Wang, HL

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Publication Type:: Conference Proceeding
Citation:: 13th International Conference on Shock and Impact Loads on Structures, SILOS 2019, 2019, pp. 635-639
Issue Date:: 2019-01-01

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Field	Value	Language
dc.contributor.author	Zhu, X https://orcid.org/0000-0001-5083-9320
dc.contributor.author	Wang, HL
dc.date.accessioned	2021-02-25T04:41:13Z
dc.date.available	2021-02-25T04:41:13Z
dc.date.issued	2019-01-01
dc.identifier.citation	13th International Conference on Shock and Impact Loads on Structures, SILOS 2019, 2019, pp. 635-639
dc.identifier.isbn	9789811426896
dc.identifier.uri	http://hdl.handle.net/10453/146453
dc.description.abstract	© 13th International Conference on Shock and Impact Loads on Structures, SILOS 2019. All Rights Reserved. A finite element model for curved continuous concrete-filled steel tubular (CFST) composite truss girder bridges has been built, and a new iterative process has been proposed for the analysis of the vehicle-bridge coupled system. The vibration modes and impact factors of the curved continuous CFST composite truss girder bridge have been obtained. The effects of parameters on the impact factors, such as the vehicle speed and deck unevenness, have been studied. The results show that the impact factor of the bridge is much larger than the value calculated from the current design code. The resonant critical vehicle speed and the resonant critical loading position are varied for different girder spans. The vehicle speed limit cannot effectively reduce the dynamic impact, and the bridge deck roughness excitation has an amplification effect on the impact factor causing by resonance. The results in this study are useful for design consideration and maintenance of CFST composite truss girder bridges.
dc.language	en
dc.relation.ispartof	13th International Conference on Shock and Impact Loads on Structures, SILOS 2019
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Impact factors for curved continuous CFST truss girder bridges
dc.type	Conference Proceeding
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
utslib.copyright.status	open_access	*
dc.date.updated	2021-02-25T04:41:11Z
pubs.publication-status	Published

Abstract:

© 13th International Conference on Shock and Impact Loads on Structures, SILOS 2019. All Rights Reserved. A finite element model for curved continuous concrete-filled steel tubular (CFST) composite truss girder bridges has been built, and a new iterative process has been proposed for the analysis of the vehicle-bridge coupled system. The vibration modes and impact factors of the curved continuous CFST composite truss girder bridge have been obtained. The effects of parameters on the impact factors, such as the vehicle speed and deck unevenness, have been studied. The results show that the impact factor of the bridge is much larger than the value calculated from the current design code. The resonant critical vehicle speed and the resonant critical loading position are varied for different girder spans. The vehicle speed limit cannot effectively reduce the dynamic impact, and the bridge deck roughness excitation has an amplification effect on the impact factor causing by resonance. The results in this study are useful for design consideration and maintenance of CFST composite truss girder bridges.

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