CONNECTION STRUCTURE OF CONCRETE REINFORCING ROD

摘要

PURPOSE: A connection structure of a concrete reinforcing rod is provided to maximally increase the stiffness of an end of the concrete reinforcing rod and to minimize damages of the end by preventing the change of inherent nature and structure of steel. CONSTITUTION: A ring shape protruded portion(52) is formed along an outer circumference of at least more than one end of a circular concrete reinforcing rod(51). The end of the concrete reinforcing rod is bent from a top of the protruded portion to form the end in a conical shape. A screw thread(53) is formed on a conical face. The end of the concrete reinforcing rod is connected with an end of another concrete reinforcing rod(51') by a coupler(61). Herein, one and the other ends of the concrete reinforcing rod and coupler are threaded in opposite directions. Then, upon the rotation of the coupler, the two concrete reinforcing rods are simultaneously inserted and combined in the coupler.