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

doi:10.1016/j.proeng.2011.07.224

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 journal › Conference article › peer-review

12 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 language	English
Pages (from-to)	1784-1790
Number of pages	7
Journal	Procedia Engineering
Volume	14
DOIs	https://doi.org/10.1016/j.proeng.2011.07.224
Publication status	Published - 2011
Event	12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 - Hong Kong, Hong Kong Duration: 2011 Jan 26 → 2011 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).

Keywords

Bridges
Eigenvalue
Flutter
Flutter derivatives
Selberg's formula
Simplified formulations

ASJC Scopus subject areas

General Engineering

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10.1016/j.proeng.2011.07.224

Cite this

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title = "A simplified evaluation in critical frequency and wind speed to bridge deck flutter",

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.",

keywords = "Bridges, Eigenvalue, Flutter, Flutter derivatives, Selberg's formula, Simplified formulations",

author = "Lee, {H. E.} and Vu, {T. V.} and Yoo, {S. Y.} and Lee, {H. Y.}",

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).; 12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 ; Conference date: 26-01-2011 Through 28-01-2011",

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doi = "10.1016/j.proeng.2011.07.224",

language = "English",

volume = "14",

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T1 - A simplified evaluation in critical frequency and wind speed to bridge deck flutter

AU - Lee, H. E.

AU - Vu, T. V.

AU - Yoo, S. Y.

AU - Lee, H. Y.

N1 - 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).

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Bridges

KW - Eigenvalue

KW - Flutter

KW - Flutter derivatives

KW - Selberg's formula

KW - Simplified formulations

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U2 - 10.1016/j.proeng.2011.07.224

DO - 10.1016/j.proeng.2011.07.224

M3 - Conference article

AN - SCOPUS:80054788233

SN - 1877-7058

VL - 14

SP - 1784

EP - 1790

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12

Y2 - 26 January 2011 through 28 January 2011

ER -

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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