Effects of inclination angle on buckling of continuous composite bridges with inclined parabolic arch ribs

Chengzhong Gui, Junqing Lei*, Teruhiko Yoda, Weiwei Lin, Yongshui Zhang

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The effects of the inclination angle on the buckling of continuous composite bridges (CCBs) with parabolic arch ribs remain to be elucidated. Static tests were conducted on an on-site prototype of a CCB with parallel arch ribs to verify the validity of proposed numerical finite element method models of CCBs with inward and outward arch ribs. We found that the expressions for the equivalent slenderness ratios and buckling coefficients should consider the interactions between the in-plane and out-of-plane buckling, given the inclination of the arch ribs. With respect to the buckling modes, the arch ribs of all the models buckled in the first lateral mode. In addition, two types of interactions were observed between the buckling modes, namely, that between in-plane and out-of-plane buckling and that between global and local buckling; these were affected by the inclination angle, especially in the case of the CCB with the outward arch ribs.

Original languageEnglish
Pages (from-to)361-372
Number of pages12
JournalINTERNATIONAL JOURNAL OF STEEL STRUCTURES
Volume16
Issue number2
DOIs
Publication statusPublished - Jun 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • continuous composite bridge
  • inclination angle
  • equivalent slenderness ratio
  • buckling coefficient
  • buckling modes
  • STRENGTH
  • COLUMNS
  • SECTION
  • BEAMS
  • BEND
  • WEB

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