A simplified evaluation in critical frequency and wind speed to bridge deck flutter

Hak Eun Lee, T. V. Vu, S. Y. Yoo, H. Y. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

This paper deals with the instability problem of flexible bridge decks under an approaching crosswind flow within framework of bimodal flutter involving fundamental vertical and torsional modes of bridge vibration. Start from simplifying coefficients from terms of the cubic and quartic polynomials derived from singularity conditions of an integral wind-structure impedance matrix and by using the quasi-steady approach, the approximated formula for calculating onset flutter of the aeroelastic bridge system are proposed. A good agreement is obtained comparing predictions on the onset flutter by the proposed and available formulas for several study cases from the existing bridges with difference of structural and aerodynamic characteristics of given bridge deck.

Original languageEnglish
Title of host publicationProcedia Engineering
Pages1784-1790
Number of pages7
Volume14
DOIs
Publication statusPublished - 2011
Event12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 - Hong Kong, Hong Kong
Duration: 2011 Jan 262011 Jan 28

Other

Other12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12
CountryHong Kong
CityHong Kong
Period11/1/2611/1/28

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Keywords

  • Bridges
  • Eigenvalue
  • Flutter
  • Flutter derivatives
  • Selberg's formula
  • Simplified formulations

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Lee, H. E., Vu, T. V., Yoo, S. Y., & Lee, H. Y. (2011). A simplified evaluation in critical frequency and wind speed to bridge deck flutter. In Procedia Engineering (Vol. 14, pp. 1784-1790) https://doi.org/10.1016/j.proeng.2011.07.224