The Construction of the Usui Bridge

DOI Web Site
  • Ôtani Shôzô
    日本道路公団東京第一管理局技術部調査役構造技術課
  • Ogata Tatsuo
    日本道路公団東京第二建設局構造技術課

Bibliographic Information

Other Title
  • 長大PC斜張橋の建設-上信越自動車道碓氷橋

Abstract

The Usui Bridge (two-span continuous prestressed concrete cable-stayed, 222 m in length) is the first PC cable-stayed bridge with one central cable plane ever constructed as a highway bridge in Japan, located in the Usui pass as a part of Josin-Etsu Expressway. The bridge is characterized by an inverse Y-shaped tower, PC corbel that supports force from the tower and a main girder designed as a tri-cecullar box type. Particularly, the erection work with 9 steps fan-shaped double cable system was reduced by using shop assembled non-grout type large-capacity cable (tensile strength of max 1 500 tf). This paper reports the outline of the construction of the long span prestressed concrete cable-stayed bridge.

Journal

  • Concrete Journal

    Concrete Journal 31 (10), 50-54, 1993

    Japan Concrete Institute

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