High-performance fiber grid anchorage system and method

Abstract

The invention provides a high-performance fiber grid anchorage system and method, wherein the anchorage system comprises anchorage parts and an anchorage bolt; the anchorage parts comprise an upper pressure sheet, a middle fixing sheet, a bottom gasket, an upper pressure sheet and a middle fixing sheet which are glued together from top to bottom; the left side surface and the front surface of the bottom gasket are respectively aligned; holes penetrating through the thicknesses of the anchorage parts are formed in the middles of the anchorage parts; the anchorage bolt is a stainless steel knocking type expansion bolt which comprises an anchorage nail and a sleeve, the anchorage nail is positioned in the sleeve, the outer diameter of the sleeve is less than the inner diameters of the holes, a gap axially parallel to the sleeve is formed in the bottom of the sleeve, and the gap can be opened while being extruded. The anchorage system and method disclosed by the invention not only can efficiently and conveniently fix a FRP grid, but also have the good mechanical performance, so that an interface stripping and sliding problem is completely solved, and the cooperative work of the FRP grid and concrete is guaranteed.

Description

technical field [0001] The present invention relates to reinforcements for concrete, and more particularly to an anchoring device for concrete reinforcements. Background technique [0002] High-performance Fiber Reinforced Plastic (FRP) mesh is an integral mesh formed by impregnating high-performance continuous fibers such as carbon fiber and glass fiber in a resin with good corrosion resistance. On the basis of inheriting the advantages of traditional FRP sheets (cloth, board, etc.) such as high strength, low specific gravity, and corrosion resistance, FRP grids have good anchorage and mechanical engagement with concrete, and better solve interface peeling and slippage It is a new type of structural reinforcement material and has been widely used in tunnels and aircrafts in the United States, Japan and other countries. Runways, aprons, bridges, highways, buildings, ditches and many other reinforcement and reconstruction projects. Among them, the fixing of the grid is an i...

AI Technical Summary

Problems solved by technology

Among them, the fixing of the grid is an important part of the FRP grid reinforcement technology. When the FRP grid strengthens the structure, it is necessary to first fix the grid profile on the surface of the original concrete member, and then spray or trowel the polymer cement mortar and the original concrete. Bonding and fixing, after forming an integrated body, they are jointly stressed and work together. In this process, the bonding between the mortar and the concrete components is often not strong, and it is easy to form a weak point of bonding, and the bonding effect is poor.

At present, there is no special anchoring device to firmly combine the FRP grid and the concrete structure to completely solve the problem of interface peeling and slippage, which greatly reduces the use effect of the FRP grid

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