In recent years, composite joints consisting of Steel-Beam and RC-Column or Steel-Beam and SRC-Column are applied to large-scaled moment-resisting frame structures. However, the adequacy of anchorage detail of column reinforcement is not clear due to the lack of experimental data. Also, in accordance with the increase of reinforcement size, mechanical anchorage is more often applied to RC and SRC beam-column joints. In this study, based on experimental data on 9 specimens of L-shaped joint consisting of Steel-Beam and RC-Column or Steel-Beam and SRC-Column utilizing mechanical anchorage, design criteria on ultimate strength of such composite beam-column joints and anchorage length of column reinforcement are discussed.
