Recent technology of prestressed concrete bridges in Japan

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Recent technology of prestressed concrete bridges in Japan

Hiroshi Mutsuyoshi & Nguyen Duc Hai
Department of Civil and Environmental Engineering, Saitama University, Saitama 338-8570, Japan
Akio Kasuga
Sumitomo Mitsui Construction Co., Ltd., Tokyo 104-0051, Japan
ABSTRACT: Prestressed concrete (PC) technology is being used all over the world in the construction of a
wide range of bridge structures. However, many PC 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 PC 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 PC
bridges on their development and applications in actual construction projects. Some noteworthy structures,
which represent the state-of-the-art technologies in the construction of PC bridges in Japan, are also presented.

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