Study of passive deck-flaps flutter control system on full bridge model. I: Theory.

Piotr Omenzetter*, Krzysztof Wilde, Yozo Fujino

*Corresponding author for this work

Research output: Contribution to journalArticle

21 Citations (Scopus)
2 Downloads (Pure)

Abstract

A passive aerodynamic control method for suppression of the wind-induced instabilities of a very long span bridge is presented in this paper. The control system consists of additional control flaps attached to the edges of the bridge deck. Control flap rotations are governed by prestressed springs and additional cables spanned between the control flaps and an auxiliary transverse beam supported by the main cables of the bridge. The rotational movement of the flaps is used to modify the aerodynamic forces acting on the deck and provides aerodynamic forces on the flaps used to stabilize the bridge. A time-domain formulation of self-excited forces for the whole three-dimensional suspension bridge model is obtained through a rational function approximation of the generalized Theodorsen function and implemented in the FEM formulation. This paper lays the theoretical groundwork for the one that follows.

Original languageEnglish
Pages (from-to)264-279
Number of pages16
JournalJournal of Engineering Mechanics
Volume128
Issue number3
DOIs
Publication statusPublished - 1 Mar 2002

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Keywords

  • aerodynamics
  • bridges
  • flutter
  • passive control
  • span
  • structural engineering
  • mechanical stability
  • mechanical control equipment

ASJC Scopus subject areas

  • Mechanical Engineering

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