抄録
This paper presents a numerical study on the column-to-beam strength ratio required for ensuring beam-hinging responses in steel moment frames. The major parameters adopted are; the type of frames, number of stories, type of beam hysteresis, and type and amplitude of ground motions. Major findings obtained are as follows: (1) the column-to-beam strength ratio that ensures beam-hinging responses increases steadily with the increase of the ground motion amplitude; and (2) the maximum story drift angle is about 1, 7 to 2.0 times lager than the maximum overall story drift angle, which indicates that this level of fluctuation in the story drift is present along the stories even for frames in which beam-hinging behavior is ensured.
