Abstract
The present paper discusses on a dynamic seismic performance index of structure, d Is, and a dynamic ductility index, d F, of a brace installed in the longitudinal direction of sport halls. Based on the result of the elasto-plasitc dynamic analysis depending on various input levels, d F and d Is are re-studied. As numerical parameters, a yield base shear coefficient of braces of substructure, Cy , and a capacity limit deformation of braces as well as hysteresis types are considered, and their effects on d F and d Is are investigated. Furthermore, the method of estimation for d F is proposed using an absorbed energy principle, and the validity of the proposal method is proven by comparing the responses of the dynamic response analysis with those based on the proposed method.
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