Method for reinforcing reinforced concrete structure by using prestressed hose clamp

Abstract

The invention relates to a method for reinforcing a reinforced concrete structure by using a prestressed hose clamp. The method comprises the following specific steps of: 1) arranging prestressed hoseclamps at equal intervals outside the reinforced concrete structure, and pre-tightening hose clamp screws by using a universal hose clamp batch or a straight line; 2) fastening the pre-stressed hoseclamp by using a torque wrench, and setting a fastening torque value as a preset value; 3) considering the deformation of the reinforced concrete structure and the moment attenuation during the installation of the prestressed hose clamp, secondarily fastening the prestressed hose clamp; 4) after fastening is completed, marking with a black marking stroke line; and 5) checking whether the prestressed hose clamp has a thread slipping and loosening phenomenon, and if so, replacing the thread slipping and loosening phenomenon. The adjustable and controllable prestress hose clamp reinforcing method is used in cooperation with the torque wrench, prestress can be accurately applied, prestress loss caused by later-stage steel loosening can be prevented, the overall deformation capacity and the bearing capacity of the reinforced concrete structure are effectively improved, and development of concrete cracks is restrained.

Description

technical field [0001] The invention belongs to the technical field of structure reinforcement, in particular to a method for reinforcing reinforced concrete structures with prestressed throat hoops. Background technique [0002] Statistics from the construction department show that my country's existing 7 billion m 2 Among the reinforced concrete structures, more than half of them have entered the aging period at present, and there are about 1 billion to 1.2 billion m 2 Reinforced concrete structures need to be reinforced to ensure safe use. In addition, my country's urbanization construction is in the parallel stage of new district development and old city reconstruction, and there is a tendency to change to the stage of old house reinforcement and reconstruction, so it is of great significance to strengthen the research on building structure reinforcement technology. [0003] The traditional reinforcement method is to use an adhesive to paste the reinforcement material ...

AI Technical Summary

Problems solved by technology

[0003] The traditional reinforcement method is to use an adhesive to paste the reinforcement material on the surface of the concrete member. Due to the defects of the adhesive such as corrosion and aging, the reinforcement effect will be greatly reduced

There are also some problems in the prestressed reinforcement technology that has developed rapidly in recent years. For example, the prestress can only be applied accurately after a complicated monitoring process in the early stage. The relaxation of the steel in the later stage will reduce the prestress, resulting in cracks being constrained and members. Section bearing capacity decreases

At present, there is no convenient, fast and long-term stable reinforcement method for reinforced concrete structures.