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

H. E. Lee, T. V. Vu, S. Y. Yoo, H. Y. Lee

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)


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
Pages (from-to)1784-1790
Number of pages7
JournalProcedia Engineering
Publication statusPublished - 2011
Event12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 - Hong Kong, Hong Kong
Duration: 2011 Jan 262011 Jan 28

Bibliographical note

Funding Information:
This research was supported by the grant from Seoul R&BD Program (TR080586) and the Ministry of Land, Transport and Maritime Affairs of Korean government through Super Long Span Bridge R&D Center (10CCTI-A052603-03-000000).


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

ASJC Scopus subject areas

  • General Engineering


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