Abstract
The reinforcement detailing in L-shaped R/C beam-column joints at the roof-level is important for rationalization of design and construction of moment-resisting frame. In order to solve this problem, the authors proposed new reinforcement detailing using mechanical external anchorage of column reinforcement. Through this detailing, anchorage region is small enough to be hidden in the water-proof layer. In this study, such L-shaped R/C beam-column joints are tested. The experimental data shows that these joints have larger deformation capacity than with conventional anchorage. This is due to the formation of the strut mechanism in the joint. Consequently, the authors clarify that the proposed design formula can be applied for estimation of ultimate strength of these joints on the basis of experimental results.
