CN105369985A - Curved-plate type anchorage device for carbon fiber plates - Google Patents

Abstract

The invention discloses a curved plate type carbon fiber plate anchorage, which comprises an upper splint and a lower splint. The first curved surface protrudes, and the upper surface of the lower splint is provided with an upwardly protruding second curved surface. The upper splint and the lower splint are clamped and locked by evenly distributed bolt assemblies, and the bolt assemblies include bolts and nuts. The curved plate carbon fiber plate anchor of this structure can not only effectively clamp the carbon fiber plate to ensure the anchoring performance, but also avoid the stress concentration of the carbon fiber plate, give full play to the ultimate strength of the carbon fiber plate and ensure its service life.

Description

Curved plate carbon fiber plate anchor

technical field

The invention relates to the field of civil engineering reinforcement and reinforcement, in particular to a curved plate type carbon fiber plate anchor.

Background technique

In recent years, high-strength composite fiber materials such as carbon fiber boards have been widely used in the reinforcement field of civil engineering. Usually, the carbon fiber plate is pasted on the surface of the reinforced component to improve the strength of the component. If the carbon fiber plate is stretched and anchored to the surface of the component, the bending strength and crack resistance of the component can be improved, the use efficiency of the composite fiber material can be improved, and the reinforcement cost can be reduced.

The use of prestressed reinforcement technology requires tensioning and anchoring of carbon fiber sheets. Although carbon fiber sheets have high tensile strength, their shear resistance is poor and it is not easy to anchor. Relying on traditional surface friction locking to achieve carbon fiber sheet clamping And anchoring, it is prone to clamping and slipping, and its work reliability is poor. In addition, when using existing anchorages to anchor carbon fiber sheets, it is easy to cause stress concentration on the carbon fiber sheet, which affects the ultimate strength and service life of the carbon fiber sheet.

In summary, a new carbon fiber plate anchor is urgently needed to overcome the defects of the existing carbon fiber plate anchor.

Contents of the invention

In view of this, the purpose of the present invention is to provide a curved plate carbon fiber plate anchorage, which can not only effectively clamp the carbon fiber plate, ensure the anchoring performance, but also avoid the stress concentration of the carbon fiber plate, fully exert the ultimate strength of the carbon fiber plate and ensure its service life.

The present invention solves the above problems through the following technical means: a curved plate carbon fiber plate anchorage, including an upper splint and a lower splint, the front ends of the upper splint and the lower splint are provided with outwardly protruding arc surfaces, and the upper splint The lower surface is provided with a downwardly protruding first curved surface, and the upper surface of the lower clamping plate is provided with an upwardly protruding second curved surface. The upper clamping plate and the lower clamping plate are clamped and locked by evenly distributed bolt assemblies, and the bolts Assemblies include bolts and nuts.

Further, at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with notches.

Further, at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with an adhesive layer.

Further, both the upper splint and the lower splint are made of hard alloy.

Further, the head end of the bolt is provided with a cylinder, and the cylinder surface of the cylinder is hingedly provided with a pawl, and a threaded hole and a cylinder hole communicating with each other are provided in the nut, and the hole wall of the cylinder hole A plurality of ratchet teeth matched with the pawl are evenly arranged in the circumferential direction.

Beneficial effects of the present invention: the curved plate carbon fiber plate anchor of the present invention includes an upper splint and a lower splint, the front ends of the upper splint and the lower splint are provided with outwardly protruding arc surfaces, and the lower surface of the upper splint is provided with There is a downwardly protruding first curved surface, and the upper surface of the lower clamping plate is provided with an upwardly protruding second curved surface. The upper clamping plate and the lower clamping plate are clamped and locked by evenly distributed bolt assemblies, and the bolt assemblies include bolts and nuts. The curved plate carbon fiber plate anchor of this structure can not only effectively clamp the carbon fiber plate to ensure the anchoring performance, but also avoid the stress concentration of the carbon fiber plate, give full play to the ultimate strength of the carbon fiber plate and ensure its service life.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a schematic cross-sectional view of the present invention;

Fig. 3 is a top view structural schematic diagram of the connection between the ratchet and the teeth of the ratchet.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings, as shown in Figures 1-3: a curved plate carbon fiber plate anchorage, comprising an upper splint 1 and a lower splint 2, the front ends of the upper splint and the lower splint are provided with Outwardly protruding curved surface 3, the lower surface of the upper splint is provided with a downwardly protruding first curved surface 4, and the upper surface of the lower splint is provided with an upwardly protruding second curved surface 5, and the upper splint and the lower splint pass through Evenly distributed bolt assemblies are clamped and locked, the bolt assemblies include bolts 6 and nuts 7, and the upper clamping plate and the lower clamping plate are both made of hard alloy. When in use, enter the carbon fiber plate or other composite fiber material from the front end, clamp it between the first curved surface and the second curved surface, then pass the bolt head through the reserved placement holes of the upper and lower splints and tighten them with nuts . The curved carbon fiber plate anchorage of this structure, on the one hand, the carbon fiber plate is clamped between the first curved surface and the second curved surface, and the clamping stress is evenly distributed by using the curved surface effect, which avoids the excessive local compressive shear force of the carbon fiber plate Shear fracture occurs, on the other hand, the first curved surface and the second curved surface facing each other form a compression allowance, and with the passage of time, under the influence of wear and weathering, a gap appears between the upper splint and the lower splint Or when the carbon fiber plate is not firmly clamped, continue to tighten the nuts to make the carbon fiber plate clamped firmly again. At the same time, the setting of the first curved surface and the second curved surface can make the prestressing duration of the bolt assembly connection last longer, effectively The anchoring effect of the carbon fiber plate is improved. In addition, the front ends of the upper splint and the lower splint are provided with arc surfaces. When tensioning, the contact with the tension block can avoid the stress concentration of the carbon fiber plate, and can fully exert the ultimate strength and strength of the carbon fiber plate. To ensure its service life.

As a further improvement of the above technical solution, at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with a notch 8 . Scores can increase friction, avoid slipping, and further improve the anchoring effect.

As a further improvement of the above technical solution, at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with an adhesive layer 9 . The adhesive layer is high-performance carbon fiber sheet adhesive, which can further make the clamping stress evenly distributed, and form adhesive force to improve the anchoring effect.

As a further improvement of the above technical solution, the head end of the bolt is provided with a cylinder 10, and the cylinder surface of the cylinder is hingedly provided with a ratchet 11, and a threaded hole and a cylinder hole communicating with each other are provided in the nut, A plurality of ratchet teeth 12 matching with the pawls are evenly arranged on the circumference of the hole wall of the cylindrical hole. When tightening the nut, the nut is screwed in from the end of the threaded hole, the threaded hole matches the bolt, and the pawl and ratchet teeth cooperate to form a one-way rotation structure, so that the nut can only rotate in the direction of tightening, and cannot rotate in the opposite direction, so as to prevent the nut from loosening , to further ensure the anchoring effect on the carbon fiber plate.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (5)

1. a curved plate type carbon fiber plate anchorage is characterized in that: comprise upper splint (1) and lower splint (2), the front ends of described upper splint and lower splint are all provided with outwardly protruding curved surface (3 ), the lower surface of the upper splint is provided with a downwardly protruding first curved surface (4), and the upper surface of the lower splint is provided with an upwardly protruding second curved surface (5). The bolt assembly is clamped and locked, and the bolt assembly includes a bolt (6) and a nut (7). 2. The curved plate carbon fiber plate anchor according to claim 1, characterized in that: at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with a notch (8). 3. The curved plate carbon fiber plate anchor according to claim 2, characterized in that: at least one of the lower surface of the upper splint and the upper surface of the lower splint is provided with an adhesive layer (9). 4. The curved plate carbon fiber plate anchor according to claim 3, characterized in that: both the upper splint and the lower splint are made of hard alloy. 5. The curved plate carbon fiber plate anchor according to any one of claims 1-4, characterized in that: the head end of the bolt is provided with a cylinder (10), and the cylindrical surface of the cylinder is hingedly arranged There is a ratchet (11), and a threaded hole and a cylindrical hole communicating with each other are arranged in the nut, and a plurality of ratchet teeth (12) matching the ratchet are evenly arranged on the upper circumference of the cylindrical hole.