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http://dx.doi.org/10.12989/was.2011.14.4.359

Simplified formulations for flutter instability analysis of bridge deck  

Vu, Tan-Van (School of Civil, Environmental and Architectural Engineering, Korea University)
Kim, Young-Min (Institute of Construction Technology, DAEWOO E&C Co., Ltd.)
Han, Tong-Seok (School of Civil and Environmental Engineering, Yonsei University)
Lee, Hak-Eun (School of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Wind and Structures / v.14, no.4, 2011 , pp. 359-381 More about this Journal
Abstract
This paper deals with the flutter instability problem of flexible bridge decks in the framework of bimodal-coupled aeroelastic bridge system analysis. Based on the analysis of coefficients of the polynomials deduced from the singularity conditions of an integral wind-structure impedance matrix, a set of simplified formulations for calculating the critical wind velocity and coupled frequency are presented. Several case studies are discussed and comparisons with available approximated approaches are made and presented, along with a conventional complex eigenvalue analysis and numerical results. From the results, it is found that the formulas that are presented in this study are applicable to a variety of bridge cross sections that are not only prone to coupled-mode but also to single-mode-dominated flutter.
Keywords
bridges; eigenvalue; flutter; flutter derivatives; instability; simplified formulations;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
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