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Structural Monitoring and Maintenance
  Volume 3, Number 3, September 2016 , pages 233-257

Japan\'s experience on long-span bridges monitoring
Yozo Fujino, Dionysius M. Siringoringo and Masato Abe

    This paper provides an overview on development of long-span bridges monitoring in Japan, with emphasis on monitoring strategies, types of monitoring system, and effective utilization of monitoring data. Because of severe environment condition such as high seismic activity and strong wind, bridge monitoring systems in Japan historically put more emphasis on structural evaluation against extreme events. Monitoring data were used to verify design assumptions, update specifications, and facilitate the efficacy of vibration control system. These were among the first objectives of instrumentation of long-span bridges in a framework of monitoring system in Japan. Later, monitoring systems were also utilized to evaluate structural performance under various environment and loading conditions, and to detect the possible structural deterioration over the age of structures. Monitoring systems are also be employed as the basis of investigation and decision making for structural repair and/or retrofit when required. More recent interest has been to further extend application of monitoring to facilitate operation and maintenance, through rationalization of risk and asset management by utilizing monitoring data. The paper describes strategies and several examples of monitoring system and lessons learned from structural monitoring of long-span bridges in Japan.
Key Words
    structural monitoring in Japan; long-span bridges; monitoring strategy; wind-induced vibration monitoring; seismic monitoring
Yozo Fujino and Dionysius M. Siringoringo:Institute of Advanced Sciences, Yokohama National University, 79-1 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
Masato Abe: BMC Corporation, Department of Research and Development, WBG Marive West 25th Floor, Nakase 2-6, Mihama-ku, Chiba, Japan


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