SIMPLIFIED DAMAGE EVALUATION METHOD FOR BUCKLING RESTRAINED BRACES ACCORDING TO GROUND MOTION CHARACTERISTICS

The Miner’s rule that is used as the damage evaluation method for the random waveform requires time-consuming waveform decomposition. It is effective to estimate the damage index from only maximum amplitude and energy absorption without waveform decomposition. It is known that the relationship between maximum deformation and cumulative plastic deformation is correlated with the repetition number f value that characterizes the seismic ground motion. In this paper, the simplified damage evaluation method using the average amplitude associated with the maximum amplitude based on f value is proposed.