Self-adaptive prestressed carbon plate anchoring system

Abstract

The utility model discloses a self-adaptive prestressed carbon plate anchoring system, which consists of a fixed end anchorage device, a tensioning end anchorage device and a carbon fiber plate, the fixed end anchorage device comprises a fixed end anchor plate and a fixed end base, and the tensioning end anchorage device comprises a tensioning end anchor plate and a tensioning end base. Each of the fixed end anchor plate and the tensioning end anchor plate comprises an upper anchor plate and a lower anchor plate which are sequentially and fixedly arranged from top to bottom, the cross section of each upper anchor plate is of an inverted concave structure, the cross section of each lower anchor plate is of a convex structure matched with the inverted concave structure, and a row of bolt holes are formed in the edges of the two long sides of each upper anchor plate and the edge of the two long sides of each lower anchor plate respectively; the upper anchor plate and the lower anchor plate are connected through fastening bolts, and the part, located between the two rows of bolt holes, between the upper anchor plate and the lower anchor plate is a carbon fiber plate clamping area. According to the self-adaptive prestressed carbon plate anchoring system, the anchor plates of the anchorage devices are connected conveniently and rapidly, operation is convenient, and the roughness degree can be automatically adjusted.

Description

Technical Field

[0001] The utility model belongs to the field of reinforcement of civil structures such as industrial buildings, civil buildings, bridges, etc., and specifically relates to a self-adaptive prestressed carbon plate anchoring system. Background Art

[0002] Carbon fiber reinforced plastic (CFRP) is a new type of high-strength material that is 7 to 10 times stronger than ordinary steel. Therefore, it is often used in the reinforcement of civil structures.

[0003] Because traditional methods of attaching carbon fiber materials don't fully utilize their strength, a reinforcement method based on prestressed carbon fiber sheets has emerged and is gradually being used to fully utilize the material's high strength. By prestressing the carbon fiber sheets and securing them to the concrete structure, crack development can be effectively controlled, improving the structural performance.

[0004] The following problems exist in the process of prestressing carbon fiber sheets:

[0005] 1. The upper and lower anchor plates of the carbon fiber sheet fixed end anchor adopt a wedge-shaped fit, which requires an additional wedge-shaped clip, making the connection inconvenient;

[0006] 2. The fixed end anchors of the carbon fiber sheet are connected by electric welding, and have poor adaptability.

[0007] Therefore, there is an urgent need to improve the anchorage and tensioning device of prestressed carbon fiber sheets to overcome the defects in the reinforcement process of carbon fiber sheets. Utility Model Content

[0008] The main purpose of the utility model is to provide a self-adaptive prestressed carbon plate anchoring system to overcome the deficiencies in the prior art.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0010] The utility model provides an adaptive prestressed carbon plate anchoring system, which is composed of a fixed end anchor, a tensioning end anchor and a carbon fiber plate. The fixed end anchor and the tensioning end anchor are respectively connected to the two ends of the carbon fiber plate to form an anchoring system as a whole; the fixed end anchor includes a fixed end anchor plate and a fixed end base, and the fixed end base is provided with a first limiting groove, and the fixed end anchor plate is inserted into the first limiting groove of the fixed end base;

[0011] The tensioning end anchor comprises a tensioning end anchor plate and a tensioning end base, the tensioning end base is provided with a second limiting groove, and the tensioning end anchor plate is inserted into the second limiting groove of the tensioning end base;

[0012] The fixed end anchor plate and the tensioning end anchor plate both include an upper anchor plate and a lower anchor plate fixed in sequence from top to bottom, the cross section of the upper anchor plate is set to an inverted concave structure, and the cross section of the lower anchor plate is set to a convex structure that cooperates with the inverted concave structure, and a row of bolt holes are respectively provided at the two long side edges of the upper anchor plate and the lower anchor plate, and the upper anchor plate and the lower anchor plate are connected by fastening bolts, and the part between the upper anchor plate and the lower anchor plate located between the two rows of bolt holes is a carbon fiber plate supporting area, and the lower anchor plate of the carbon fiber plate supporting area is provided with a groove that cooperates with the upper anchor plate.

[0013] Furthermore, hob structures are respectively provided on opposite surfaces of the carbon fiber plate supporting area of ​​the tensioning end anchor plate.

[0014] Furthermore, the fastening bolts are high-strength bolts.

[0015] Furthermore, the distance between the edges of the bolt holes on the fixed end anchor plate and the tension end anchor plate and the edge of the carbon fiber plate is ≤5 mm.

[0016] Furthermore, the inner diameter of the bolt hole on the upper anchor plate is slightly smaller than the inner diameter of the bolt hole on the lower anchor plate.

[0017] Furthermore, the tensioning end anchor plate is arranged at the middle part of the tensioning end base, and the fixed end anchor plate is arranged at an end of the fixed end base away from the tensioning end anchor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The utility model provides an adaptive prestressed carbon plate anchoring system, wherein the upper anchor plate and the lower anchor plate are connected in a concave-convex manner, which is convenient to connect and easy to operate, and the two anchor plates are locked by fastening bolts. By setting the number of fastening bolts, the adaptability between the various components in the prestressed carbon fiber plate anchoring system can be automatically improved, the structural reinforcement efficiency and stability can be improved, and the difficulty of construction and installation can be reduced.

[0020] (2) The present invention provides a hob structure on the opposite side of the carbon fiber plate supporting area of ​​the tensioning end anchor plate, which can limit the carbon fiber plate and prevent the carbon fiber plate from moving left and right, thereby improving friction.

[0021] (3) The utility model improves the conversion efficiency of the bolt tightening force by controlling the distance between the edge of the bolt hole on the anchor plate and the edge of the carbon fiber plate to ≤5mm; the inner diameter of the bolt hole on the upper anchor plate is slightly smaller than the inner diameter of the bolt hole on the lower anchor plate. The small hole is to ensure a high matching degree of the bolt thread, and the large hole is a through hole to facilitate the insertion of the bolt, which is equivalent to one tapping and one through hole, reducing costs and facilitating construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of an adaptive prestressed carbon plate anchoring system in one embodiment of the present application.

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the anchor plate at the middle tensioning end.

[0025] Figure 3 yes Figure 2 Cross-sectional view along direction II.

[0026] Figure 4 yes Figure 2 Cross-sectional view along the II-II direction.

[0027] Explanation of the accompanying drawings: 1. Fixed end anchor, 11. Fixed end anchor plate, 12. Fixed end base, 2. Tensioning end anchor, 21. Tensioning end anchor plate, 211. Upper anchor plate, 212. Lower anchor plate, 22. Tensioning end base, 3. Carbon fiber plate, 4. Bolt hole, 5. Fastening bolt, 6. Groove. DETAILED DESCRIPTION

[0028] The present invention will be more fully understood through the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it should be understood that the disclosed embodiments are merely exemplary of the present invention, which can be embodied in various forms. Therefore, the specific functional details disclosed herein should not be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching those skilled in the art to employ the present invention in various ways in virtually any appropriately detailed embodiment. Example

[0029] This embodiment provides an adaptive prestressed carbon plate anchoring system, such as Figure 1 As shown, it is composed of a fixed end anchor 1, a tension end anchor 2 and a carbon fiber plate 3. The fixed end anchor 1 and the tension end anchor 2 are respectively connected to the two ends of the carbon fiber plate 3, forming an anchoring system as a whole.

[0030] During the specific implementation process, the fixed end anchor 1 includes a fixed end anchor plate 11 and a fixed end base 12, and the fixed end base 12 is provided with a first limiting groove, and the fixed end anchor plate 11 is inserted into the first limiting groove of the fixed end base 12; the tensioning end anchor 2 includes a tensioning end anchor plate 21 and a tensioning end base 22, and the tensioning end base 22 is provided with a second limiting groove, and the tensioning end anchor plate 21 is inserted into the second limiting groove of the tensioning end base 22; in this embodiment, the tensioning end anchor plate 21 is arranged in the middle part of the tensioning end base 22, and the fixed end anchor plate 11 is arranged at the end of the fixed end base 12 away from the tensioning end anchor 2.

[0031] In specific implementation, the structures of the fixed end anchor plate 11 and the tension end anchor plate 21 are roughly the same, both of which include an upper anchor plate and a lower anchor plate fixedly arranged from top to bottom. This embodiment takes the tension end anchor plate 21 as an example for specific description. Figure 2-4 As shown, the tensioning end anchor plate 21 includes an upper anchor plate 211 and a lower anchor plate 212 fixedly arranged in sequence from top to bottom, the cross section of the upper anchor plate 211 is set to an inverted concave structure, and the cross section of the lower anchor plate 212 is set to a convex structure that cooperates with the inverted concave structure, and a row of bolt holes 4 are respectively provided at the two long side edges of the upper anchor plate 211 and the lower anchor plate 212, and the upper anchor plate 211 and the lower anchor plate 212 are connected by fastening bolts 5, and the part between the upper anchor plate 211 and the lower anchor plate 212 located between the two rows of bolt holes 4 is the carbon fiber plate 3 supporting area, and the lower anchor plate 212 in the carbon fiber plate 3 supporting area is provided with a groove 6 that cooperates with the upper anchor plate 211.

[0032] In this embodiment, the structures of the tensioning end anchor plate 21 and the fixed end anchor plate 11 are basically the same, and the main difference is that: a hob structure is respectively provided on the opposite surfaces of the carbon fiber plate supporting area of ​​the tensioning end anchor plate 21, which can limit the carbon fiber plate 3 and prevent the carbon fiber plate 3 from moving left and right to increase friction; and the edge of the bolt hole 4 on the fixed end anchor plate 11 and the tensioning end anchor plate 21 is controlled to be ≤5mm away from the edge of the carbon fiber plate 3 to improve the conversion efficiency of the bolt tightening force.

[0033] In the specific implementation of this embodiment, the fastening bolts 5 are high-strength bolts, and the number of high-strength bolts on the fixed end anchor plate 11 is the same as that of the tension bolts.

[0034] The number of high-strength bolts on the pulling end anchor plate 21 is the same, and the inner diameter of the bolt hole on the upper anchor plate 211 is slightly smaller than the inner diameter of the bolt hole on the lower anchor plate 212. This structural design makes processing convenient, processing cost low, construction and installation convenient, and matching effect good.

[0035] The present embodiment provides an adaptive prestressed carbon plate anchoring system, in which the upper anchor plate and the lower anchor plate of the fixed end anchor plate 11 and the tensioning end anchor plate 21 are connected in a concave-convex manner, which is convenient to connect and easy to operate, and the two anchor plates are locked by fastening bolts 5. By setting the number of fastening bolts 5, the adaptability between the various components in the prestressed carbon fiber plate anchoring system can be automatically improved, the structural reinforcement efficiency and stability can be improved, and the difficulty of construction and installation can be reduced.

[0036] Although the present invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions, and / or additions may be made and that substantial equivalents may be substituted for the elements of the embodiments without departing from the spirit and scope of the present invention. Additionally, many modifications may be made to adapt specific circumstances or materials to the teachings of the present invention without departing from the scope of the present invention. Therefore, it is not intended herein to limit the present invention to the disclosed specific embodiments for carrying out the present invention, but rather to include all embodiments within the scope of the appended claims. Furthermore, unless specifically stated, any use of the terms first, second, etc. does not indicate any order or importance, but rather uses the terms first, second, etc. to distinguish one element from another.

Claims

1. An adaptive prestressed carbon plate anchoring system, comprising a fixed end anchor (1), a tensioning end anchor (2) and a carbon fiber plate (3), wherein the fixed end anchor (1) and the tensioning end anchor (2) are respectively connected to the two ends of the carbon fiber plate (3), and the whole constitutes an anchoring system; characterized in that: The fixed end anchor (1) comprises a fixed end anchor plate (11) and a fixed end base (12); the fixed end base (12) is provided with a first limiting groove, and the fixed end anchor plate (11) is inserted into the first limiting groove of the fixed end base (12); The tensioning end anchor (2) comprises a tensioning end anchor plate (21) and a tensioning end base (22); a second limiting groove is provided on the tensioning end base (22); and the tensioning end anchor plate (21) is inserted into the second limiting groove of the tensioning end base (22); The fixed end anchor plate (11) and the tensioning end anchor plate (21) both include an upper anchor plate and a lower anchor plate fixedly arranged in sequence from top to bottom, the cross section of the upper anchor plate is set as an inverted concave structure, the cross section of the lower anchor plate is set as a convex structure that cooperates with the inverted concave structure, and a row of bolt holes (4) are respectively provided at the two long side edges of the upper anchor plate and the lower anchor plate, the upper anchor plate and the lower anchor plate are connected by fastening bolts (5), the portion between the upper anchor plate and the lower anchor plate located between the two rows of bolt holes (4) is a carbon fiber plate (3) supporting area, and a groove (6) that cooperates with the upper anchor plate is provided on the lower anchor plate of the carbon fiber plate (3) supporting area.

2. The adaptive prestressed carbon plate anchoring system according to claim 1, characterized in that: Hob structures are respectively provided on opposite sides of the carbon fiber plate (3) supporting area of ​​the tensioning end anchor plate (21).

3. The adaptive prestressed carbon plate anchoring system according to claim 1 or 2, characterized in that: The fastening bolts (5) are high-strength bolts.

4. The adaptive prestressed carbon plate anchoring system according to claim 3, characterized in that: The distance between the edges of the bolt holes (4) on the fixed end anchor plate (11) and the tension end anchor plate (21) and the edge of the carbon fiber plate (3) is ≤5 mm.

5. The adaptive prestressed carbon plate anchoring system according to claim 1 or 2, characterized in that: The inner diameter of the bolt hole (4) on the upper anchor plate is slightly smaller than the inner diameter of the bolt hole (4) on the lower anchor plate.

6. The adaptive prestressed carbon plate anchoring system according to claim 1, characterized in that: The tensioning end anchor plate (21) is arranged at the middle portion of the tensioning end base (22), and the fixed end anchor plate (11) is arranged at an end of the fixed end base (12) away from the tensioning end anchor (2).

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