SELF-ASSEMBLY BOLT FOR STRENGTH THE BENDING LOAD

摘要

PURPOSE: A prefabricated bolt in which the bending load is reinforced is provided to couple a bolt by reinforcing the bending load because the strength of materials of a connection and reinforcement bar is enhance without increasing a size of the blot in a place under more bending load. CONSTITUTION: A prefabricated bolt(10) in which the bending load is reinforced comprises a bolt head unit(11), a bolt screw unit(12), and a connection and reinforcement bar(13). The bolt head unit comprises a coupling groove in a longitudinal direction. A screw thread is formed in both outer circumferences in a longitudinal direction of the coupling groove. The bolt screw unit comprises a through-hole in a longitudinal direction. A screw thread is formed in both outer circumferences in a longitudinal direction of the through-hole. A screw thread is formed in the outer circumferences in a longitudinal direction of the connection and reinforcement bar.