Abstract
Twenty years have passed since response control systems, which reduce structural damages caused by earthquakes or strong winds, started to be used in actual buildings. JSCA conducted a survey of response-controlled buildings on design offices and construction companies, and made a database. Using this database a classification of the number of the buildings that use response control systems by the year of construction, the purposes of the building, and the type of mechanism device is performed. Also, the distribution of the applied damping forces and their response reduction efficiency are analyzed. Discussions of these analyses and of the present response control systems situation in Japan are finally reported in this paper.
