Tension and anchorage system and method of prestressed carbon fiber plate in concrete structure

Abstract

The invention belongs to the relevant technical field of prestress reinforced concrete and discloses a tensioning-anchoring system and method for a prestressed carbon fiber plate of a concrete structure. The tensioning-anchoring system and the tensioning-anchoring method are applied to the clamping, tensioning and anchoring of infrastructure engineering structures such as construction and water conservancy. The tensioning-anchoring system for the prestressed carbon fiber plate of the concrete structure comprises a fixed end anchor tool, a tensioning end anchor tool and a combined tensioning device. The tensioning-anchoring method for the prestressed carbon fiber plate of the concrete structure comprises the steps of mounting an anchoring device, clamping the carbon fiber plate, smearing the carbon fiber plate with glue, carrying out pressed tensioning, detaching the combined tensioning device and mounting a pressing plate. The tensioning-anchoring system and the tensioning-anchoring method can be widely used for strengthening and reinforcing large-scale engineering structures such as constructed or bridges or house buildings under construction and particularly suitable for carrying out in-vitro prestressed reinforcing on large-span concrete beams, plates and the like, so that the carbon fiber strength utilization rate is improved, the bearing forces of the strengthened or reinforced engineering structures are remarkably enhanced, and the service lives of the strengthened or reinforced engineering structures are remarkably prolonged.

Description

technical field [0001] The invention belongs to the related technical field of prestressed reinforced concrete, and proposes a concrete structure prestressed carbon fiber plate tensioning and anchoring system and method, which are suitable for clamping, tensioning and anchoring of infrastructure engineering structures such as civil engineering and water conservancy. Background technique [0002] The emergence of carbon fiber reinforced composites as a high-performance new material provides a broader space for the development of civil engineering. As a new type of concrete active reinforcement technology, prestressed carbon fiber plate anchoring technology has good development prospects. It can give full play to the characteristics of light weight and high strength of carbon fiber, greatly improve the strength of concrete structures, and effectively reduce its stress and deflection deformation. , Delay the cracking speed of the beam body, reduce and close the cracks of the be...

AI Technical Summary

Problems solved by technology

[0004] At present, the prestressed carbon fiber plate tension anchor system developed at home and abroad is still in the preliminary research stage. The existing tension anchor devices are generally bulky, require a large construction operation space, the construction technology is not mature enough, and the long-term performance is poor. Inconvenient and difficult to guarantee the tension anchoring effect, and the anchoring end is not directly installed on the surface of the reinforced structure, but directly suspended, resulting in an increase in the direct gap between the prestressed carbon fiber plate and the reinforced structure, which cannot fully exert the active reinforcement effect

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