Single-wedge-shaped clamping piece type prestress FRP plate anchorage device
A technology of FRP boards and wedge-shaped clips, which is applied in construction, building maintenance, building construction, etc., can solve the problems of long distance between FRP board and steel beam surface, large adhesive thickness, long surface distance, etc., and achieve anchorage Small and lightweight, simple structure effect
Active Publication Date: 2021-08-03
HOHAI UNIV
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Problems solved by technology
However, the double-wedge clip-type anchor has problems such as heavy anchorage and the distance between the FRP plate and the surface of the reinforced structure in engineering applications, and when the double-wedge clip-type anchor is used to strengthen the steel beam, the flange surface of the steel beam cannot be groove, so that the problem that the distance between the FRP plate and the surface of the steel beam cannot be solved, resulting in a large thickness of the adhesive, wasting the adhesive, and increasing the reinforcement cost
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[0014] Such as figure 1 As shown, the single wedge-shaped clip-type prestressed FRP plate anchor includes an integrally formed wedge-shaped opening anchor groove 1 and a rectangular gasket 3. The opening anchor groove 1 is movable with a wedge-shaped clip 2, and the opening anchor groove 1 The horizontal inclination angle of the groove and the inclination angle of the wedge-shaped clip 2 are 3°, and the two sides of the open anchor groove 1 are symmetrically provided with internal thread through holes 1-1 for installing the bolt 4, and the bolt 4 fixes the open anchor groove 1 on the steel beam 6 On the lower flange, an FRP plate 5 is placed between the gasket 3 and the wedge-shaped clip 2, the length of the gasket 3 is equal to that of the wedge-shaped clip 2, and the edge of the front end of the gasket 3 in contact with the FRP plate 5 is rounded to reduce the FRP The stress concentration of the plate 5, the thickness of the wedge-shaped clip 2, the FRP plate 5 and the space...
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The invention discloses a single-wedge-shaped clamping piece type prestress FRP plate anchorage device. The single-wedge-shaped clamping piece type prestress FRP plate anchorage device comprises an open anchor groove, a wedge-shaped clamping piece is movably installed in the open anchor groove, the open anchor groove is a wedge-shaped groove, internal thread through holes used for installing bolts are symmetrically formed in the two sides of the open anchor groove, and the open anchor groove is fixed to a lower flange of a steel beam through the bolts. According to the single-wedge-shaped clamping piece type prestress FRP plate anchorage device, the distance between the FRP plate and the surface of the steel beam is shortened through the single-wedge-shaped clamping piece structure, the distance between the FRP plate and the surface of the steel beam can be adjusted by adjusting the thickness of gaskets, the structure is simple, and the anchorage device is small and light.
Description
technical field [0001] The present invention relates to an FRP plate anchor, more specifically, to a single-wedge clip type prestressed FRP plate anchor. Background technique [0002] Fiber-reinforced composite material FRP is a sheet formed by continuous fiber through a pultrusion process. It has excellent characteristics such as light weight, high strength, fatigue resistance and durability, and has been widely used in the field of structural reinforcement. Although the external FRP board reinforcement method can play a certain role in reinforcement, due to the secondary force problem, the high-strength characteristics of the FRP board cannot be exerted, and the strength utilization rate is low, and the effect of improving the structural stiffness after reinforcement is very limited. Compared with the method of attaching FRP boards, the combination of FRP boards and prestressing can effectively solve the stress hysteresis problem of FRP boards, better exert the high-streng...
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IPC IPC(8): E04G23/02
CPCE04G23/0218E04G2023/0262
Inventor 王海涛朱长玉刘赛赛陈敏生卞致宁
Owner HOHAI UNIV