ESTIMATION OF CUMULATIVE DAMAGE OF BUILDING WITH HYSTERETIC RESTORING FORCE BY USING WAVELET ANALYSIS OF STRONG RESPONSE RECORDS

Abstract

It is very important to estimate the cumulative damage of buildings by a strong ground motion quantitatively, because it is necessary to judge whether they are able to be used or not in future. Even after they are judged to be able to be used, it is also necessary to judge the amount or method of reinforcing them. In this paper, the estimation of cumulative damage of building with hysteretic restoring force by using wavelet analysis to strong response motion is proposed. Firstly, it was assumed that the abnormal signals might be contained in the observed acceleration records, which should be produced at the point changing from elastic limit to plastic limit and might be detected by wavelet analysis. Through the numerical evaluation using the model, it is proved that this assumption is correct and it is confirmed thatjPthe wavelet analysis will be used to estimate the cumulative damage of buildings by earthquake, effectively.