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Experimental analysis of frequency tuning influence on the response stability of bridge girders under wind action

SYSNO ASEP	0361436
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Experimental analysis of frequency tuning influence on the response stability of bridge girders under wind action
Author(s)	Král, Radomil (UTAM-F)_{RID, SAI} Pospíšil, Stanislav (UTAM-F)_{RID, SAI, ORCID} Náprstek, Jiří (UTAM-F)_{RID, ORCID, SAI}
Number of authors	3
Source Title	Proceedings of 13th International Conference on Wind Engineering. - Amsterdam : Multi-Science Publishing Co Ltd, 2011 / Geurts Chris - ISBN 978-1-907132-33-9
Pages	s. 1-8
Number of pages	8 s.
Action	International conference of wind engineering /13./
Event date	10.07.2011-15.07.2011
VEvent location	Amsterdam
Country	NL - Netherlands
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	wind tunnel analysis ; sectional bridge girders ; stability
Subject RIV	JM - Building Engineering
R&D Projects	GA103/09/0094 GA ČR - Czech Science Foundation (CSF)
	IAA200710902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z20710524 - UTAM-F (2005-2011)
Annotation	In this article, a wind tunnel analysis of a double-degree-of-freedom (DDOF) system represented by sectional bridge girders is carried out. The analysis is focused on the influence of the natural frequencies ratio on the initiation of unstable vibration. The article also discusses experimentally ascertained response regimes, with an emphasis on their stability character. The assessment of the response is based on the hysteresis loops and separation curves determining the stability boundaries. The influence of initial disturbance on the stability is examined. Two types of girder were investigated: (i) rectangular cross-section with the aspect ratio 1:5, and, (ii) bridge-like girder with analogous principal dimensions. For both types of decks, the limits of the stability are significantly affected by initial disturbance.
Workplace	Institute of Theoretical and Applied Mechanics
Contact	Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285
Year of Publishing	2012

Number of the records: 1