抄録
In this paper, characteristics of damping ratio of RC/SRC high-rise buildings are discussed from identification of strong motion data. The following results are shown:
1) From the identification result of strong motion, damping ratio type is similar to instantaneous stiffness proportional.
2) First viscos damping ratio from strong motion is from 1.5% to 3.0%.
3) Higher viscos damping ratios are almost same value as first damping ratio and are not proportional to natural frequencies.
