Anchoring device used between FRP (Fiber Reinforced Plastic) pipe and metal bar

Abstract

The invention relates to an anchoring device, in particular to an anchoring device used between an FRP (Fiber Reinforced Plastic) pipe and a metal bar. The anchoring device comprises an FRP pipe body and a metal bar body, wherein one end of the metal bar body is arranged in the FRP pipe body, a circular truncated cone-shaped end is arranged at the front end of the metal bar body, the metal bar body is connected with a small end face of the circular truncated cone-shaped end, an external thread is arranged on the surface of the metal bar body, which is close to the circular truncated cone-shaped end, a nut is arranged to be matched with the external thread, at least two clamp sheets are arranged between the FRP pipe body and the circular truncated cone-shaped end, the inner surfaces of the clamp sheets are in full contact with the side of the circular truncated cone-shaped end, the outer surfaces of the clamp sheets are in full contact with the inner surface of the FRP pipe body, one end faces of the clamp sheets are in contact with the nut, each clamp sheet is of a two-layer structure consisting of an outer metal layer and an inner polyurethane layer, and the joint of the FRP pipe body and the metal bar body is wrapped with a steel sleeve.

Description

technical field [0001] The invention relates to an anchoring device, in particular to an anchoring device for FRP pipes. Background technique [0002] Fiber reinforced composite material (FRP for short) is a new high-performance material composed of fiber material and matrix material according to a certain process. It has the advantages of light weight, high strength, corrosion resistance, and good fatigue resistance. It was originally mainly used in aviation and aerospace. In recent years, with the reduction of the manufacturing cost of FRP materials, it has gradually become a new type of structural material in the field of civil engineering. According to different fiber types, FRP materials can be divided into three categories: CFRP, GFRP, AFRP. According to different product forms, FRP can be divided into: FRP sheet, FRP bar and FRP pipe. When FRP materials are used in engineering, the key issue is the anchorage at both ends. The anchoring methods of FRP pipes have bee...

AI Technical Summary

Problems solved by technology

The disadvantages of bonded anchoring are that it is not easy to center, the requirements for bonding materials are high, the size of the anchoring device is large, the construction is inconvenient, the anchoring device cannot be reused, the curing time of the bonding material is long, and the durability needs to be further verified.

The disadvantage of threaded connection anchoring is that the end of the FRP pipe is damaged and the construction is inconvenient

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