A simplified formulation for the aerodynamic instabilityt of bridge decks

Y. Cho, J. Y. Cho, Hak Eun Lee

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

Abstract

Aerodynamic instability of flexible bridge decks have been treated by a variety of engineering disciplines, each having its particular terminology. Since flutter is one of the divergenttype oscillations, the onset of flutter directly induces structural failure. Therefore, in the design of long spanned bridges, flutter stability has to be carefully investigated not to excite the flutter oscillation below the designed wind velocity. In this paper, a historical development of flutter instability and simplified approximate method are briefly described. Simplified formulations for estimating the inwind frequencies, damping ratios, and critical wind velocity at varying flexible bridge decks are presented by deduced from impedance matrix of in-wind bridge system.

Original languageEnglish
Title of host publicationEASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction
Publication statusPublished - 2008 Dec 1
Event11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11 - Taipei, Taiwan, Province of China
Duration: 2008 Nov 192008 Nov 21

Other

Other11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11
CountryTaiwan, Province of China
CityTaipei
Period08/11/1908/11/21

Fingerprint

Bridge decks
Aerodynamics
Terminology
Damping

Keywords

  • Aerodynamic instability
  • Flutter velocity
  • Long span bridge
  • Simplified formulation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Cho, Y., Cho, J. Y., & Lee, H. E. (2008). A simplified formulation for the aerodynamic instabilityt of bridge decks. In EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction

A simplified formulation for the aerodynamic instabilityt of bridge decks. / Cho, Y.; Cho, J. Y.; Lee, Hak Eun.

EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction. 2008.

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

Cho, Y, Cho, JY & Lee, HE 2008, A simplified formulation for the aerodynamic instabilityt of bridge decks. in EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction. 11th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC-11, Taipei, Taiwan, Province of China, 08/11/19.
Cho Y, Cho JY, Lee HE. A simplified formulation for the aerodynamic instabilityt of bridge decks. In EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction. 2008
Cho, Y. ; Cho, J. Y. ; Lee, Hak Eun. / A simplified formulation for the aerodynamic instabilityt of bridge decks. EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction. 2008.
@inproceedings{a1434f35cacc4b2ab8ff290e16ce22b2,
title = "A simplified formulation for the aerodynamic instabilityt of bridge decks",
abstract = "Aerodynamic instability of flexible bridge decks have been treated by a variety of engineering disciplines, each having its particular terminology. Since flutter is one of the divergenttype oscillations, the onset of flutter directly induces structural failure. Therefore, in the design of long spanned bridges, flutter stability has to be carefully investigated not to excite the flutter oscillation below the designed wind velocity. In this paper, a historical development of flutter instability and simplified approximate method are briefly described. Simplified formulations for estimating the inwind frequencies, damping ratios, and critical wind velocity at varying flexible bridge decks are presented by deduced from impedance matrix of in-wind bridge system.",
keywords = "Aerodynamic instability, Flutter velocity, Long span bridge, Simplified formulation",
author = "Y. Cho and Cho, {J. Y.} and Lee, {Hak Eun}",
year = "2008",
month = "12",
day = "1",
language = "English",
booktitle = "EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction",

}

TY - GEN

T1 - A simplified formulation for the aerodynamic instabilityt of bridge decks

AU - Cho, Y.

AU - Cho, J. Y.

AU - Lee, Hak Eun

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Aerodynamic instability of flexible bridge decks have been treated by a variety of engineering disciplines, each having its particular terminology. Since flutter is one of the divergenttype oscillations, the onset of flutter directly induces structural failure. Therefore, in the design of long spanned bridges, flutter stability has to be carefully investigated not to excite the flutter oscillation below the designed wind velocity. In this paper, a historical development of flutter instability and simplified approximate method are briefly described. Simplified formulations for estimating the inwind frequencies, damping ratios, and critical wind velocity at varying flexible bridge decks are presented by deduced from impedance matrix of in-wind bridge system.

AB - Aerodynamic instability of flexible bridge decks have been treated by a variety of engineering disciplines, each having its particular terminology. Since flutter is one of the divergenttype oscillations, the onset of flutter directly induces structural failure. Therefore, in the design of long spanned bridges, flutter stability has to be carefully investigated not to excite the flutter oscillation below the designed wind velocity. In this paper, a historical development of flutter instability and simplified approximate method are briefly described. Simplified formulations for estimating the inwind frequencies, damping ratios, and critical wind velocity at varying flexible bridge decks are presented by deduced from impedance matrix of in-wind bridge system.

KW - Aerodynamic instability

KW - Flutter velocity

KW - Long span bridge

KW - Simplified formulation

UR - http://www.scopus.com/inward/record.url?scp=84871013913&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871013913&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84871013913

BT - EASEC-11 - Eleventh East Asia-Pacific Conference on Structural Engineering and Construction

ER -