INTERACTIVE INSTABILITY IN DECK-TYPE STEEL ARCH BRIDGES. IN: STRUCTURAL STABILITY RESEARCH COUNCIL. 1990 ANNUAL TECHNICAL SESSION, STABILITY OF BRIDGES, ST. LOUIS, MISSOURI, APRIL 10-11, 1990

In this paper, the appearance of the local member instability mode and its progress until the inplane ultimate limit state, as the deck-type arch bridge system is loaded into inelastic and finite deformation range, are studied by an accurate nonlinear finite element approach. This approach takes into consideration material nonlinearities, spread of yielding zones in the cross section and along the longitudinal axis, and unloading caused by strain reversal. Next, interactive effects of the local member buckling on the ultimate stability strength of the bridge system are examined in detail. Based on the results obtained from the study, a practical formula for evaluating the interactive strength between the local member buckling and the overall instability is proposed. It is shown that the proposed formula is sufficiently accurate for practical applications to deck-type arch bridge systems.

  • Corporate Authors:

    Lehigh University

    Fritz Engineering Laboratory
    Bethlehem, PA  United States  18015
  • Authors:
    • Yabuki, T
    • Vinnakota, S
  • Publication Date: 1990

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00612579
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 31 1991 12:00AM