Behavior of Exterior Beam Column Joint Strengthened with Modified Reinforcement Technique

Abstract

In a beam column joint to meet the prerequisites of strength, stiffness and ductility under dynamic loading one of the current arrangement is to give high level of transverse hoops in the center of joint. The most significant elements that influence the shear capacity of joint are the anchorage of beam longitudinal reinforcement, compressive strength of concrete, joint aspect ratio and number of stirrups inside the joint. The beam moment which is instigated during earthquake movement on the beam can create high shear force and bond breakdown into the joint bringing about splitting of the joint. Risky plan and specifying inside the joint district jeopardize the whole structure.  In this research exterior beam column joint with two beams using modified reinforcement technique (MRT) at beam column intersection is investigated under cyclic loading and it is discovered that its quality present an extra component for shear transfer. From the analytical investigation it is seen that the execution of cross inclined bar expanded an ultimate loading capacity, ductility and stiffness of joint in both loading conditions. The results of controlled and strengthened specimen are compared through load-displacement hysteretic curve, displacement time history curve, load cycle Vs shear stress and load displacement response. From the diagrams it is seen that the usage of modifies reinforcement technique at the joint give better outcomes as compared with controlled specimens in terms of total deformation, shear stress and shear strain.