TRC prestress implementation device and construction method for reinforcing RC component by using TRC prestress implementation device

Abstract

The invention discloses a TRC prestress implementation device and a construction method for reinforcing an RC component by using the TRC prestress implementation device. The TRC prestress implementation device comprises an anchoring mechanism, a tensioning mechanism, a plurality of layered positioning mechanisms and a fiber net clamp; the anchoring mechanism comprises a first anchoring crosspiece,a first centering mechanism and a first self-locking box; the tensioning mechanism comprises a second anchoring crosspiece, a second centering mechanism, a second self-locking box and a tensioning driving assembly; the fiber net clamp is wedge-shaped and comprises a clamp cover plate and a clamp bottom plate which are detachably connected; and the plurality of layered positioning mechanisms are uniformly distributed between the anchoring mechanism and the tensioning mechanism and are used for equidistantly distributing each layer of fiber net in the plurality of layers of fiber nets. According to the TRC prestress implementation device and the construction method for reinforcing the RC component by using the TRC prestress implementation device, prestress application to the plurality of layers of fiber nets can be completed on a construction site without large complex equipment, RC component reinforcement through the prestress TRC is achieved, the whole implementation device is simple,the process flow is concise, construction is convenient, popularization is easy, and the device and the construction method have good application prospects and economic value in the field of engineering reinforcement.

Description

Technical field [0001] The invention relates to the technical field of structural reinforcement construction, in particular to a TRC prestress implementation device and a construction method for reinforcing RC components. Background technique [0002] FRP strengthening and repairing structure technology is another new type of structural strengthening technology after increasing concrete cross-section and bonding steel. Reinforce the structure by wrapping and pasting FRP on the surface of the component. Compared with the traditional reinforced concrete cross-section or steel-bonded concrete reinforcement, FRP reinforcement technology has the advantages of space saving, simple construction, no on-site fixed facilities, easy construction quality, and basically no increase in structural size and weight, corrosion resistance and durability. Good characteristics. Therefore, FRP reinforcement technology has attracted much attention and attention. However, FRP reinforcement usually re...

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Problems solved by technology

[0006] The disadvantage is that the prestressed carbon fiber cloth usually cannot stick to the surface of the component to be reinforced. Although the fiber cloth can be fixed by applying organic resin glue, the resin glue has poor adaptability to high temperature resistance, aging resistance and wet concrete surface. Poor, and the thickness and uniformity of the resin adhesive layer will lead to uneven stress distribution at the interface between the two, affecting the reinforcement effect; in addition, the prestressing device of the carbon fiber cloth must remain effective and cannot be removed after the reinforcement is completed, otherwise Due to the interface bonding problem, the fiber cloth will suffer serious prestress loss, which will affect the reinforcement effect

[0007] Patent CN105350790A discloses a method for reinforcing reinforced concrete slabs with prefabricated prestressed TRC slabs. The prefabricated prestressed TRC thin slabs are attached to the surface of reinforced concrete for the purpose of giving full play to the tensile properties of TRC materials. However, this method has the following two disadvantages: (1) The prestress is applied to the prefabricated TRC plate. Only when the component to be reinforced undergoes a large deformation, the reinforcement layer can exert its reinforcement effect, and cannot restore the deformation of the original component during service, and the reinforcement effect is not obvious; ( 2) The thickness of the prefabricated TRC board is too small to be roughened. Therefore, it is difficult to ensure the bonding quality between the reinforcement layer and the original component during the implementation process. destroy

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