ABSTRACT
ABSTRACT Reinforced concrete frame structure is a widely used structure form. The beam-column joints are the key and the vulnerable component in the seismic design of the RC framed structures. In this paper, the relevant test results of the three typical beam-column joints e.g. interior joint, exterior joint and joint with floor slab were collected and analyzed. The main influencing factors such as concrete compressive strength, stirrups of the joints, longitudinal reinforcement of the beam, and floor slabs and the reinforcement bars were investigated. A relationship between the stirrups ratio and the reinforcement ratio of the interfacing beam has been presented. RC framed structure should be designed that the stirrups of the joints and reinforcement bars of the beam yield simultaneously. Concrete is a significant factor that bears the shearing force of the joints. Increasing concrete strength or the area of the joint core can effectively improve the shear capacity of the joints. The effect of the floor slabs on the shear capacity of the joints cannot be ignored that can provide at least 35% of the total shear capacity of the joints.
