THE TSUKUHARA EXTRADOSED BRIDGE NEAR KOBE

In 1988, J Mathivat introduced the concept of 'extradosed' bridges, whose stay cables are functionally similar to external post-tensioning cables. The Tsukuhara Bridge near Kobe, Japan, is the second bridge where the Japan Public Highway Corporation has used this technique. It was originally planned as an arch bridge, but its design was changed because of the success of the Odawara Blueway Bridge, Japan's first extradosed bridge. Good seismic quality was another important consideration. The Tsukuhara Bridge is a three-span frame structure with a 180m long main span. Concrete counterweights inside the side span box girders reduce the piers' overturning moment. The bridge has single-cell box girders instead of conventional two-cell girders. A finite element analysis was conducted during the design process, to ensure durability like that of a traditional prestressed concrete slab deck with a 6m span. The piers and towers are V-shaped, and cross beams between the pylons are not necessary because the towers are short enough. The stay cables form a replaceable external cable system. The bridge was designed according to new seismic specifications, based on the 1995 earthquake at Kobe, because detailed design began after that earthquake. The girders are constructed by free cantilevering.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10168664
• Corporate Authors:

  International Association for Bridge and Structural Engineering

  ETH-Honggerberg, Wolfgang-Pauli-Strasse 15
  Zurich 8093,   Switzerland  CH-8093
• Authors:
  • Ogawa, Atsushi
  • MATSUDA, T
  • KASUGA, A
• Publication Date: 1998-3

Language

• English

Media Info

• Pagination: p. 172-3
• Serial:
  • STRUCTURAL ENGINEERING INTERNATIONAL
  • Publisher: International Association for Bridge and Structural Engineering
  • ISSN: 1016-8664

Subject/Index Terms

• TRT Terms: Box girders; Bridge members; Bridge piers; Bridge towers; Bridges; Cable stayed bridges; Cantilevers; Concrete; Construction; Design; Finite element method; Length; Quality control; Seismicity
• Uncontrolled Terms: Bridge spans; Quality
• Geographic Terms: Japan
• ITRD Terms: 3474: Box girder; 3455: Bridge; 3434: Bridge pier; 3450: Cantilever; 4755: Concrete; 3655: Construction; 9011: Design (overall design); 6490: Finite element method; 8053: Japan; 9063: Quality; 5731: Seismic; 3452: Span; 3417: Stayed girder bridge; 3440: Tower (bridge)
• Subject Areas: Bridges and other structures; Construction; Design;

Filing Info

• Accession Number: 00757345
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Dec 17 1998 12:00AM