Resisting Mechanism of RC Beam-Column Joints Strengthened with RC Brackets
Keywords:
Beam-Column Joints, Reinforced Concrete Brackets, StrengtheningAbstract
This paper aims to study a strengthening technique for reinforced concrete beam-column joints to resist additional horizontal shear forces by adding reinforced concrete (RC) brackets. Based on increasing the effective area of the joint, the method provides convenient and easy installation for existing structures. In this study, two exterior beam-column joints were tested under monotonic loading at the end of the beam. The behaviors of the original joint and the joint strengthened with RC brackets were compared. It was found that strengthening the joint using RC brackets increased the load carrying capacity. Strengthening the joint using RC brackets could increase the horizontal shear force resistance at the joint. Moreover, at the same load levels, the strengthened specimen showed lower strain values in the steel reinforcement of the beam, also implying lower values of horizontal shear force transfer at the joint.
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