Improved system buckling analysis of effective lengths of girder and tower members in steel cable-stayed bridges

Hoon Yoo, Dong Ho Choi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This paper proposes an iterative system buckling analysis to determine reasonable effective lengths of girder and tower members in steel cable-stayed bridges. The modifications include the addition of a fictitious axial force to the geometric stiffness matrix with iterative eigenvalue computations. After verifying the proposed method by analyzing steel frames, we apply it to cable-stayed bridges with different center spans and girder depths. The effective lengths of members in these example bridges by the proposed method are compared with those found using conventional buckling analysis. The effects of the proposed method on slenderness ratios and compressive strengths are also discussed.

Original languageEnglish
Pages (from-to)847-860
Number of pages14
JournalComputers and Structures
Volume87
Issue number13-14
DOIs
StatePublished - 2009 Jul 1

Fingerprint

Cable-stayed Bridge
Cable stayed bridges
Steel bridges
Buckling
Towers
Steel
Stiffness matrix
Eigenvalue Computation
Compressive strength
Compressive Strength
Stiffness Matrix

Keywords

  • Cable-stayed bridge
  • Effective length
  • Fictitious axial force
  • System buckling analysis

Cite this

@article{0a2b5410ddea45d0b6387ac5209bfa62,
title = "Improved system buckling analysis of effective lengths of girder and tower members in steel cable-stayed bridges",
abstract = "This paper proposes an iterative system buckling analysis to determine reasonable effective lengths of girder and tower members in steel cable-stayed bridges. The modifications include the addition of a fictitious axial force to the geometric stiffness matrix with iterative eigenvalue computations. After verifying the proposed method by analyzing steel frames, we apply it to cable-stayed bridges with different center spans and girder depths. The effective lengths of members in these example bridges by the proposed method are compared with those found using conventional buckling analysis. The effects of the proposed method on slenderness ratios and compressive strengths are also discussed.",
keywords = "Cable-stayed bridge, Effective length, Fictitious axial force, System buckling analysis",
author = "Hoon Yoo and Choi, {Dong Ho}",
year = "2009",
month = "7",
day = "1",
doi = "10.1016/j.compstruc.2009.01.010",
language = "English",
volume = "87",
pages = "847--860",
journal = "Computers and Structures",
issn = "0045-7949",
number = "13-14",

}

Improved system buckling analysis of effective lengths of girder and tower members in steel cable-stayed bridges. / Yoo, Hoon; Choi, Dong Ho.

In: Computers and Structures, Vol. 87, No. 13-14, 01.07.2009, p. 847-860.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Improved system buckling analysis of effective lengths of girder and tower members in steel cable-stayed bridges

AU - Yoo, Hoon

AU - Choi, Dong Ho

PY - 2009/7/1

Y1 - 2009/7/1

N2 - This paper proposes an iterative system buckling analysis to determine reasonable effective lengths of girder and tower members in steel cable-stayed bridges. The modifications include the addition of a fictitious axial force to the geometric stiffness matrix with iterative eigenvalue computations. After verifying the proposed method by analyzing steel frames, we apply it to cable-stayed bridges with different center spans and girder depths. The effective lengths of members in these example bridges by the proposed method are compared with those found using conventional buckling analysis. The effects of the proposed method on slenderness ratios and compressive strengths are also discussed.

AB - This paper proposes an iterative system buckling analysis to determine reasonable effective lengths of girder and tower members in steel cable-stayed bridges. The modifications include the addition of a fictitious axial force to the geometric stiffness matrix with iterative eigenvalue computations. After verifying the proposed method by analyzing steel frames, we apply it to cable-stayed bridges with different center spans and girder depths. The effective lengths of members in these example bridges by the proposed method are compared with those found using conventional buckling analysis. The effects of the proposed method on slenderness ratios and compressive strengths are also discussed.

KW - Cable-stayed bridge

KW - Effective length

KW - Fictitious axial force

KW - System buckling analysis

UR - http://www.scopus.com/inward/record.url?scp=67349273259&partnerID=8YFLogxK

U2 - 10.1016/j.compstruc.2009.01.010

DO - 10.1016/j.compstruc.2009.01.010

M3 - Article

AN - SCOPUS:67349273259

VL - 87

SP - 847

EP - 860

JO - Computers and Structures

JF - Computers and Structures

SN - 0045-7949

IS - 13-14

ER -