Free vibration characteristics of horizontally curved composite plate girder bridges

M. Y. Wong, N. E. Shanmugam, Siti Aminah Osman

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper is concerned with free vibration characteristics and natural frequency of horizontally curved composite plate girder bridges. Three-dimensional finite element models are developed for the girders using the software package LUSAS and analyses carried out on the models. The validity of the finite element models is first established through comparison with the corresponding results published by other researchers. Studies are then carried out to investigate the effects of total number of girders, number of cross-frames and curvature on the free vibration response of horizontally curved composite plate girder bridges. The results confirm the fact that bending modes are always coupled with torsional modes for horizontally curved bridge girder systems. The results show that the first bending mode is influenced by composite action between the concrete deck and steel beam at low subtended angle but, on the girders with larger subtended angle at the centre of curvature such influence is non-existence. The increase in the number of girders results in higher natural frequency but at a decreasing rate. The in-plane modes viz. longitudinal and arching modes are significantly influenced by composite action and number of girders. If no composite action is taken into account the number of girders has no significant effect for the in-plane modes.

Original languageEnglish
Pages (from-to)297-315
Number of pages19
JournalSteel and Composite Structures
Volume10
Issue number4
Publication statusPublished - Aug 2010

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Plate girder bridges
Composite bridges
Beams and girders
Natural frequencies
Composite materials
Steel
Software packages
Vibrations (mechanical)
Concretes

Keywords

  • Bridges, cross-frames
  • Composite girders
  • Finite element analysis
  • Horizontally curved girders
  • Natural frequency

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Metals and Alloys

Cite this

Free vibration characteristics of horizontally curved composite plate girder bridges. / Wong, M. Y.; Shanmugam, N. E.; Osman, Siti Aminah.

In: Steel and Composite Structures, Vol. 10, No. 4, 08.2010, p. 297-315.

Research output: Contribution to journalArticle

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