Innovative Technologies for Prestressed Concrete Bridges in Japan

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Title: Innovative Technologies for Prestressed Concrete Bridges in Japan

Author(s): H. Mutsuyoshi and H. Minh

Publication: Special Publication

Volume: 272

Issue:

Appears on pages(s): 25-44

Keywords: external tendons; extradosed prestressed concrete bridges; grout; high-strength concrete; prestressed concrete bridges, prestressing tendon.

Date: 10/1/2010

Abstract:
Prestressed (PS)concrete technology is being used all over the world in the construction of a wide range of structures, particularly bridges. However, many PS bridges have been deteriorating even before the end of their design service-life due to corrosion and other environmental effects. In view of this, a number of innovative technologies have been developed in Japan to increase not only the structural performance of PS bridges, but also their long-term durability. These include the development of novel structural systems and the advancement in construction materials. This paper presents an overview of such innovative technologies on PS bridges including a brief discussion of their development and applications in actual construction projects. Some noteworthy structures, which represent the state-of-the-art technologies in the construction of PS bridges in Japan, are also presented.