Development of Hysteretic Damper using Eccentrical Brace System

Abstract

Y-shape brace damper is a vibration control system against earth quakes. It is composed of two braces and a vertical member ( Link ) that possesses superior plastic deformation capacity and energy dissipation capacity. On the basis of a lot of experimental investigations, practical design recommendations are proposed. They contain depth to thickness ratio, restoring force characteristics, strength ratio of link to frame and equations for evaluating damage of link, in order to expect good performance of buildings. In addition, some buildings with Y- brace damper to prevent from damage of their main frames are shown.