Investigation of Reinforced Concrete Pipe Deformability by Reinforcement Frame Under Static Loads

It was established that significant service life of pipes, exposure to aggressive environment, and overload from vehicles lead to deteriorating the technical condition of pipes. As a result, defects and damages, which require immediate elimination to ensure safe operation, develop in the pipes. The technology of strengthening a defective concrete pipe using a reinforcement frame and a metal clip with filling the space with concrete mortar is presented. Statistical experimental studies of the deformability of reinforced concrete pipe by a spatial reinforcement frame and a metal clip are carried out. It is established that reinforcement of a defective pipe with a reinforcement frame leads to increasing the pipe bearing capacity. The maximum amount of deformation of the pipe reinforced by a metal clip, at which the pipe was destroyed, was 6.61 mm. When reinforcing the defective pipe by a reinforcement frame and a metal clip, it was found that the maximum amount of deformation at which the pipe was destroyed was 9.44 mm. It is found that reinforcement of a defective pipe with a reinforcement frame can be effectively used in practice in order to increase (restore) the bearing capacity of defective pipes operated on roads and railways.