Development of U-shaped Steel Damper for Seismic Isolation System

Seismic isolation system was widely admitted after Hanshin-Awaji (Kobe) Earthquake in Japan. It has been adopted in important buildings that become a disaster prevention base after earthquakes such as public office buildings and fire stations including a private building a lot. In this paper, the authors easily describe the feature of U-shaped steel damper and the results of experiments to the horizontal property and the velocity and the temperature dependency.