Abstract
Basic questions are presented on the applicability of the proposed method of seismic damage estimation of building structures by means of wavelet analyses. Major points are as follows: 1)The applicability of the method was examined only for the by-linear type hysteresis curves having a sharp change from the elastic region to the inelastic region, but since an actual structure has a smooth transition from linearity to non-linearity, the proposed method seems to be useless in spite of the authors's desire; 2)The damage estimation was based on the Miner's fatigue law, but since the cracks generated in several cycles of plastic strains are not fatigue cracks but ductile ones, the conventional linear estimation of cumulative damage may not be applied for earthquake damage.
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