Reinforcement system by using double-layer prestressing carbon fiber plates

Abstract

The invention provides a reinforcement system by using double-layer prestressing carbon fiber plates. The system comprises a fixed end anchoring base, a tensioned end anchoring base, a mobile steeringhead, a fixed steering head, an end plate, a tensioning threaded rod, a jack and wave-shaped anchor heads. The fixed end anchoring base and the tensioned end anchoring base are both fixed on the surface of an object to be reinforced through anchor bolts, the two ends of each double-layer carbon fiber plate are fixed on the two wave-shaped anchor heads respectively, and the tensioned end anchoringbase is located between the mobile steering head and the end plate; the jack abuts against the portion between the tensioned end anchoring base and the end plate, the fixed steering head is fixedly connected to the fixed end anchoring base through an anchor bolt, two parallelly arranged tensioning threaded rods penetrate through the end plate, the tensioned end anchoring base and the mobile steering head in sequence, and each wave-shaped anchor head is provided with three layers of clamping plates which are used for clamping the carbon fiber plates. After the object is reinforced by the double-layer prestressing carbon fiber plates, the cracking load of the object to be reinforced is improved, the overall anti-bending rigidity is improved, the anti-tensioning intensity of the reinforcement system is improved, and the application range is enlarged.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber board application and relates to a double-layer prestressed carbon fiber board reinforcement system. Background technique [0002] The use of prestressed carbon fiber materials to reinforce reinforced concrete buildings can give full play to the high-strength properties of fiber materials, improve the bending stiffness, cracking, yield load and ultimate bearing capacity of the structure, and improve the fatigue life of components. In recent years, there have been more and more studies on the reinforcement technology of prestressed carbon fiber plates, which has become a research hotspot and frontier in the field of reinforcement technology. Up to now, most domestic and foreign studies have used tensioned single-layer carbon fiber panels for reinforcement tests and researches. However, for structures with long-span bridges and less space at the bottom of the beam, if single-layer prestressed c...

AI Technical Summary

Problems solved by technology

Up to now, most domestic and foreign studies have used tensioned single-layer carbon fiber panels for reinforcement tests and researches. However, for structures with long-span bridges and less space at the bottom of the beam, if single-layer prestressed carbon fiber panels are used, the arrangement in narrow spaces is allowed. The number of carbon fiber plates is small, so the prestress value that can be applied is small, the reinforcement effect is not obvious, and the design requirements cannot be met. At this time, if double-layer or multi-layer carbon fiber plates can be used for reinforcement, under the same reinforcement conditions, other The amount of reinforcement is larger, the prestress that can be applied is higher, and it is easier to meet the actual needs of the project

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