A STUDY ON EVALUATION METHOD OF PHASE CHARACTERISTICS FOR INPUT DESIGN EARTHQUAKE GROUND MOTION

Abstract

 Authors proposed an estimation method of the site amplification factor for a site where earthquake records are not available by using microtremor H/V spectrum and the site amplification factor at a nearby site in the previous study. It is necessary to evaluate phase characteristics in addition to the site amplification factor for the evaluation of input design earthquake ground motion. This study discusses an evaluation method of phase characteristics for a site where earthquake records are not available considering the change in group delay time according to the change of peak frequency in the site amplification factor.