Ohmishima Bridge, which is now under construction in Japan, is a steel highway bridge spanning 297 m (974.4ft.) of a half-through two-hinged solid rib arch stiffened by side ties. The two main arch ribs of box section are stiffened respectively, by two side ties. One end of each tie is fixed to the top of an abutment in both side spans. Bending moments and stresses due to live loads or wind loads in the arch ribs can be reduced by the stiffening ties more than those of ordinary two-hinged arches, and the steel weight of the ribs decreases considerably. Therefore, this new type arch is more economical than an ordinary two-hinged or fixed solid rib arch. Since the arch ribs become more slender, geometrical nonlinearity of the arch may be more remarkable. To investigate the geometrical and material nonlinearities of such a long-span and unusual type of steel arch bridge including overall in elastic instability, extensive experimental and analytical studies were carried out. In this paper, the results of the analytical study with discussions are reported. The combined nonlinear analyses are performed by a matrix method based on finite displacement theory for in-plane and out-of-plane instability. It was confirmed that the side ties for stiffening a two-hinged arch bridge are very effective for the reduction of stresses and geometrical nonlinearities and for an increase of overall ultimate strength in-plane or out-of-plane of the arch. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 246-254
  • Monograph Title: Bridge Engineering. Volume 1
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183771
  • Record Type: Publication
  • ISBN: 0309026962
  • Files: TRIS, TRB
  • Created Date: Dec 12 1978 12:00AM