Iran is one of the countries that is at high risk of earthquakes. Therefore, the necessity of the resistance of all components against lateral loads is normal and connections are no exception. The bonding strength is very high in bearing resistance to lateral loads and ductility. One of the problems is the large volume fitting of the reinforcement in the area of the connecting area, which causes the concrete to become difficult and causes inadequate fittings. The high resistance rod with an elongation parameter can solve this problem.
In this paper, by using ABAQUS finite element code for modeling, the parameters of strength, hardness, energy absorption, deformability and cracking in intermediate joints with different types of ordinary and high performance rebar are compared.
The change in the type of rebar and the increase in its delivery tensile strength using reinforced rebar the energy absorption and bonding strength. This is due to an increase in the capacity and impact of steel materials. Due to the uniformity of the modulus of elasticity and the Poisson coefficient for all types of steels, changing the type of bars and increasing its resistance does not affect the elastic stiffness of the joint.