Abstract
A model to predict the shear strength versus shear distortion response of hybrid connections between reinforced concrete columns and steel (RCS) beams is presented. Based on a preestablished maximum attainable joint shear deformation, design equations were developed for use in both interior and exterior RCS connections in buildings located in high seismic risk zones. The proposed model is based on the definition of the state of plane strain in the joint through the development of a ratio between the principal tensile and compression strains. The strength of the joints is given by contributions from the steel web panel and concrete diagonal struts. The joint model is capable of predicting the shear force, and stirrup and concrete strains at any level of joint shear distortion for exterior joints. In addition, the use of the proposed design equations led to excellent agreement between predicted and measured shear strength for both interior and exterior RCS joints.
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