Investigation on destructive power indices of strong gound motions using building damage data and strong ground motion records by the 1994 Northridge, California, Earthquake

We investigated the 1994 Northridge, California, earthquake, where we have both strong ground motion records and building damage date, examining correlation between various indices of seismic destructive power and building damage. We used correlation analyses, maximum likelihood method and correlation analyses considering the number of buildings ground strong ground motion observation points, We confirmed that the average elastic velocity response in the period range of 1 to 2 s with a damping factor of 0.05 which one of the authors proposed as an ontimum destructive power index of strong ground motion for predicting building damage can be used in the case of buildings in California, USA The period range is based on the equivalent periods that are calculated for buildings with typical elastic periods considering inelastic elongation