ULTIMATE STRENGTH OF REINFORCED CONCRETE BEAM-COLUMN JOINT AT SOFT-FIRST-STORY IN OPENING DIRECTION

Abstract

In this paper, we discuss the ultimate strength of reinforced concrete exterior beam-column joint at soft first-story in the opening direction. We modified the beam-column joint model proposed by Shiohara et. al. to calculate the ultimate strength of the beam-column joint at soft first-story. In this modified model, the effect of wall panel and second-story column on the joint strength is considered. The wall panel and second-story column have a positive effect on the joint strength. The calculated strengths of the joints agreed with the experimental results.