Abstract
Hybrid RCS frames consisting of reinforced concrete (RC) column and steel (S) are used frequently in practice for mid- to high-rise buildings. RCS frames possess several advantages from structural, economical, and constructional view points compared to either traditional RC or steel frames. One of the key elements in RCS frames is the beam–column joints. This paper deals with numerical study on static response of a new reinforce concrete-steel (RCS) exterior beam–column joint. The studied beam–column joint detail is a through-column type in which an H steel profile totally embedded inside RC column is directly welded to the steel beam. The H steel profile was covered by two supplementary plates in the joint area. This detail provides two main advantages: The column is continuous, and no stirrups in the joint area are needed. The nonlinear behavior of the new joint is studied numerically and showed that this proposed joint is suitable as a special moment connection. In addition, the parametric studies are carried out to investigate the influences of the stirrups, the encased profile length, and supplementary plate length on the behavior of the joint.
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