Structural health monitoring of bridges in Japan: an overview of the current trend

This paper describes an overview of research and development on structural health monitoring (SHM) of bridges in Japan. The paper consists of three parts. The first part presents the backgrounds of SHM development, in which the needs for bridge SHM are explained. In the second part, the concept of SHM as a part of vulnerability assessment in conjunction with risk reduction is discussed. Key development in SHM such as sensor technologies and methodologies are reviewed. The third part of the paper outlines strategies implemented for bridge SHM in Japan. They are categorized into three main groups according to the purpose of monitoring that is for: natural hazard and environment condition, effective stock management, and failure prevention. Finally the paper presents examples of bridge monitoring systems toward implementing these strategies and the lessons learned from monitoring experiences.

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