Patent ID: 8622093

Claim:
A vibration-resistant reinforced concrete watertight pipe comprising: a reinforced concrete pipe having a reinforcement mat, which is assembled with longitudinal reinforcements and transverse reinforcements, disposed in a concrete layer; and a coupling means made up of a convexity coupling means and a concavity coupling means that are coupled to opposite ends of the reinforced concrete pipe and have coupling ridges and coupling furrows respectively, wherein the convexity coupling means and the concavity coupling means coupled to the opposite ends of the reinforced concrete pipe are formed of a synthetic resin having physical properties different from those of the reinforced concrete pipe, and have shape and thickness identical to those of the reinforced concrete pipe, each of the convexity coupling means and the concavity coupling means has a metal core, an end of which is bent in an “L” shape, installed therein to reinforce strength so as to be able to withstand soil pressure, loads of vehicles, and a dead load of the pipe, and extension bars that integrally protrude from the metal core and are formed of the same metal material as the metal core so as to be able to be connected to a bent vertical part of the metal core and the reinforcement mat by welding, or anchors into which the reinforcement mat is fitted and assembled; each of the convexity coupling means and the concavity coupling means includes a recess formed in an inner end face thereof which is connected with the reinforced concrete pipe, the recess being filled with concrete when the pipe is formed to increase connectability and watertightness; and each of the convexity coupling means and the concavity coupling means includes ring-shaped buffer grooves that are formed in inner and outer circumferences thereof and prevent the coupling means from being deformed by shocks, concentrated stress, or flexure of a joint.