A prestressed carbon fiber plate tensioning anchoring device

Abstract

The utility model specifically relates to a prestressed carbon fiber plate tensioning and anchoring device, comprising a prestressed carbon fiber plate, a movable fastening steel plate clamp, a tensioning end steel, a tensioning bolt and an adjusting nut, wherein the prestressed carbon fiber plate comprises a main body section and an inclined reinforcement section connected to one end of the main body section, and both ends of the main body section are provided with an anchoring steel plate for fixing the main body section to the bottom of the beam body; the movable fastening steel plate clamp clamps the inclined reinforcement section; the tensioning end steel comprises a fixing portion for fixing to the bottom of the beam body and an adjusting portion connected to one end of the fixing portion and extending downward; one end of the tensioning bolt is fixedly connected to the movable fastening steel plate clamp, and the other end of the tensioning bolt passes through the adjusting portion and is connected to the adjusting nut. The prestressed carbon fiber plate tensioning and anchoring device has a simple structure, does not require a jack to implement tensioning during construction, is simple to construct, has high tensioning efficiency, and has a good reinforcement effect.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering reinforcement, in particular to a prestressed carbon fiber plate tensioning and anchoring device. Background Art

[0002] Prestressed carbon fiber plate reinforcement technology anchoring technology, as a new type of active concrete reinforcement technology, combines the high strength of carbon fiber plates and the characteristics of applying prestress. The carbon fiber plates have high strength utilization rate, which can effectively increase the strength and rigidity of the structure while reducing the deflection deformation of reinforced concrete structures, and can reduce and close cracks. It has the characteristics of light weight and good reinforcement effect, and has good development prospects.

[0003] The existing prestressed carbon fiber plate reinforcement technology is to apply adhesive on the contact surface between the carbon fiber plate and the bottom of the beam body and then tension the carbon fiber plate or anchor the prestressed carbon fiber plate through supports and chemical anchors. The strength of the adhesive will gradually decrease with the passage of time and the influence of the external environment, which will have an adverse effect on the structure of the bridge. On the other hand, the prestressed carbon fiber plate tensioning and anchoring devices currently used often have complex structures, inconvenient construction, and poor tensioning and anchoring effects. During construction, more complex and bulky equipment is usually required. For example, a jack needs to be installed for tensioning, which has a long production cycle and increases the reinforcement cost of the concrete structure, and needs further improvement. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a prestressed carbon fiber plate tensioning and anchoring device, which has a simple structure, does not require a jack to implement tensioning during construction, is easy to construct, has high tensioning efficiency, and has a good reinforcement effect.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a prestressed carbon fiber plate tensioning and anchoring device, comprising a prestressed carbon fiber plate, a movable fastening steel plate clamp, a tensioning end steel, a tensioning bolt and an adjusting nut, the prestressed carbon fiber plate comprising a main body section and an inclined reinforcement section connected to one end of the main body section, both ends of the main body section are provided with anchoring steel plates for fixing the main body section to the bottom of the beam body; the movable fastening steel plate clamp clamps the inclined reinforcement section; the tensioning end steel section comprises a fixing portion fixedly connected to the bottom of the beam body and an adjusting portion connected to one end of the fixing portion and extending downward; one end of the tensioning bolt is fixedly connected to the movable fastening steel plate clamp, and the other end of the tensioning bolt passes through the adjusting portion and is connected to the adjusting nut.

[0006] Furthermore, the upper end surface and the lower end surface of the inclined reinforcement section are both provided with wedge-shaped plates, and the movable fastening steel plate clamp is clamped on one side of the two wedge-shaped plates away from the inclined reinforcement section.

[0007] Furthermore, the prestressed carbon fiber plate tensioning and anchoring device also includes a reinforcing steel plate and a welding bolt, one side of the reinforcing steel plate is connected to an end of a movable fastening steel plate clamp away from the main section, and the other side of the reinforcing steel plate is connected to the tensioning bolt; one end of the welding bolt passes through the reinforcing steel plate and is fixedly connected to the reinforcing steel plate, and the outer peripheral surface of the other end of the welding bolt is welded to the movable fastening steel plate clamp.

[0008] Furthermore, the movable steel plate fastening clamp includes a clamp bolt and two oppositely arranged clamping plates, the end of the inclined reinforcement section away from the main section and the wedge plate are located between the two clamping plates, the end surfaces of the two clamping plates away from the main section are abutted against one side plate surface of the reinforced steel plate, and the clamp bolt is used to fix the two clamping plates, the two wedge plates and the inclined reinforcement section.

[0009] Furthermore, the number of the clamp bolts is at least two, and the clamp bolts pass through two clamping plates, two wedge plates and the inclined reinforcement section.

[0010] Furthermore, the number of the welding bolts is at least two; one end of at least one welding bolt is connected to the upper end of the reinforcing steel plate, and the outer peripheral surface of the other end is welded to the side plate surface of a clamping plate away from the wedge plate; one end of at least one welding bolt is connected to the lower end of the reinforcing steel plate, and the outer peripheral surface of the other end is welded to the side plate surface of another clamping plate away from the wedge plate.

[0011] Furthermore, the number of the welding bolts is two, one end of the two welding bolts is respectively connected to the upper end and the lower end of the reinforcing steel plate, and the outer peripheral surfaces of the other ends of the two welding bolts are respectively welded to the side plate surfaces of the two clamping plates away from the wedge plate.

[0012] Furthermore, the anchoring steel plate is arranged on the lower plate surface of the prestressed carbon fiber plate and is fixedly connected to the prestressed carbon fiber plate and the bottom of the beam body through chemical anchor rods.

[0013] Furthermore, the wedge-shaped plate is bonded to the surface of the inclined reinforcement section by adhesive.

[0014] Furthermore, the fixing portion is fixed to the bottom of the beam body by a chemical anchor.

[0015] Furthermore, the wedge-shaped plate is a wedge-shaped plastic plate.

[0016] Beneficial effects of the utility model: When the prestressed carbon fiber plate tensioning and anchoring device of the utility model is used, the main section is contacted with the contact surface of the bottom of the beam body by an anchoring steel plate, and the anchoring steel plate is fixed to the bottom of the beam body by an anchoring steel plate; the inclined reinforcement section is inclined downward, so that a space for installing anchoring components is formed between the bottom of the beam body and the inclined reinforcement section; the movable fastening steel plate is used to clamp the inclined reinforcement section; the tensioning bolt is fixedly connected with the movable fastening steel plate clamp and passes through the adjustment part of the tensioning end steel section to be threadedly connected with the adjusting nut, thereby realizing the connection between the movable fastening steel plate clamp and the tensioning end steel section. The utility model can screw the adjusting nut according to the designed tensioning value, adjust the positional relationship between the adjusting nut and the tensioning bolt, and realize the tensioning and anchoring of the prestressed carbon fiber plate. The prestressed carbon fiber plate tensioning and anchoring device has a simple structure, does not require a jack to implement tensioning during construction, is easy to construct, has high tensioning efficiency, and has a good reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the prestressed carbon fiber plate tensioning and anchoring device of the utility model.

[0018] Figure 2 for Figure 1 Enlarged view of point C in the middle.

[0019] Figure 3 It is a bottom view of the prestressed carbon fiber plate tensioning and anchoring device of the utility model.

[0020] Figure 4 for Figure 1 Enlarged view of point D in the middle.

[0021] The reference numerals include: 1. prestressed carbon fiber plate; 101. inclined reinforcement section; 2. chemical anchor rod; 3. anchor steel plate; 4. clamp bolt; 5. movable fastening steel plate clamp; 6. wedge plate; 7. welding bolt; 8. reinforcement steel plate; 9. tensioning bolt; 10. adjusting nut; 11. tensioning end steel; 111. fixing part; 112. adjusting part; 12. weld; 13. beam body; 14. column body. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0023] like Figure 1-4As shown, a prestressed carbon fiber plate tensioning and anchoring device comprises a prestressed carbon fiber plate 1, a movable fastening steel plate clamp 5, a tensioning end steel 11, a tensioning bolt 9 and an adjusting nut 10, wherein the prestressed carbon fiber plate 1 comprises a main body section and an inclined reinforcement section 101 connected to one end of the main body section, and both ends of the main body section are provided with an anchoring steel plate 3 for fixing the main body section to the bottom of a beam body 13; the movable fastening steel plate 5 clamp clamps the inclined reinforcement section 101;

[0024] The tensioning end steel section 11 includes a fixing portion 111 for fixedly connecting to the bottom of the beam body 13 and an adjusting portion 112 connected to one end of the fixing portion 111 and extending downward; one end of the tensioning bolt 9 is fixedly connected to the movable fastening steel plate clamp 5, and the other end of the tensioning bolt 9 passes through the adjusting portion 112 and is connected to the adjusting nut 10.

[0025] Furthermore, the upper and lower end surfaces of the inclined reinforcement section 101 are both provided with wedge plates 6, and the movable fastening steel plate clamp 5 is clamped on one side of the two wedge plates 6 away from the inclined reinforcement section 101, that is, the movable fastening steel plate clamp 5 is clamped on the inclined surface of one side of the two wedge plates 6, thereby clamping the two wedge plates 6 and the inclined reinforcement section 101 located between the two wedge plates 6.

[0026] When the prestressed carbon fiber plate tensioning and anchoring device of this embodiment is used, the anchoring steel plate 3 is used to make the straight main section contact with the contact surface at the bottom of the beam body 13, and the anchoring steel plate 3 is used to fix the main section to the bottom of the beam body 13; the inclined reinforcement section 101 is inclined downward, so that a space for installing anchoring components is formed between the bottom of the beam body 13 and the inclined reinforcement section 101; after the wedge plate 6 covers the upper and lower surfaces of the inclined reinforcement section 101, a movable fastening steel plate is used to clamp the wedge plate 6 and the inclined reinforcement section 101, so as to achieve a stable connection between the movable fastening steel plate, the wedge plate 6 and the inclined reinforcement section 101; the tensioning bolt 9 is fixedly connected to the movable fastening steel plate clamp 5, and passes through the adjustment part 112 of the tensioning end steel section 11 and is threadedly connected to the adjusting nut 10, thereby realizing the connection between the movable fastening steel plate clamp 5 and the tensioning end steel section 11. In this embodiment, the adjusting nut 10 can be screwed according to the designed tension value to adjust the positional relationship between the adjusting nut 10 and the tension bolt 9, so as to realize the tension anchoring of the prestressed carbon fiber plate 1 at the bottom of the beam body 13. The prestressed carbon fiber plate tension anchoring device has a simple structure, does not require a jack to implement tensioning during construction, is easy to construct, has high tensioning efficiency, and has a good reinforcement effect. In this embodiment, the installation position of the prestressed carbon fiber plate 1 is located at the bottom of the bridge beam body 13 in the area between the two columns 14.

[0027] Furthermore, the prestressed carbon fiber plate tensioning and anchoring device also includes a reinforcing steel plate 8 and a welding bolt 7, one side of the reinforcing steel plate 8 is connected to the end of the movable fastening steel plate fixture 5 away from the main section, and the other side of the reinforcing steel plate 8 is connected to the tensioning bolt 9; one end of the welding bolt 7 passes through the reinforcing steel plate 8 and is fixedly connected to the reinforcing steel plate 8, and the outer peripheral surface of the other end of the welding bolt 7 is welded to the movable fastening steel plate fixture 5. The welding bolt 7 is fixedly connected to the reinforcing steel plate 8 and welded to the movable fastening steel plate fixture 5, so that the reinforcing steel plate 8 and the movable fastening steel plate fixture 5 can be firmly connected; at the same time, the reinforcing steel plate 8 can be fixedly connected to the tensioning end steel 11 through the tensioning bolt 9.

[0028] Furthermore, the movable steel plate fastening clamp 5 includes a clamp bolt 4 and two clamping plates arranged opposite to each other up and down, the end of the inclined reinforcement section 101 away from the main section and the two wedge-shaped plates 6 are located between the two clamping plates, and the end faces of the two clamping plates away from the main section are in contact with one side plate surface of the reinforcement steel plate 8, and the clamp bolt 4 is used to fix the two clamping plates, the two wedge-shaped plates 6 and the inclined reinforcement section 101. In this embodiment, the number of the clamp bolts 4 is at least two, and the clamp bolts 4 pass through one clamping plate, one wedge-shaped plate 6, the inclined reinforcement section 101, another wedge-shaped plate 6 and another clamping plate from top to bottom.

[0029] Furthermore, the number of the welding bolts 7 is at least two; one end of at least one welding bolt 7 is connected to the upper end of the reinforcing steel plate 8, and the outer peripheral surface of the other end is welded to the side plate surface of a clamping plate away from the corresponding wedge plate 6; one end of at least one welding bolt 7 is connected to the lower end of the reinforcing steel plate 8, and the outer peripheral surface of the other end is welded to the side plate surface of another clamping plate away from the corresponding wedge plate 6.

[0030] In this embodiment, the number of the welding bolts 7 is two, and one end of the two welding bolts 7 is connected to the upper end and the lower end of the reinforcing steel plate 8 respectively; a weld 12 is provided between the welding bolts 7 and the clamping plate, and the outer peripheral surfaces of the other ends of the two welding bolts 7 are respectively welded to the side plate surface of the two clamping plates away from the wedge plate 6. Due to the above-mentioned structure, after the two clamping plates clamp the two wedge plates 6 and the inclined reinforcement section 101, the clamp bolts 4 are tightened, so that the wedge plate 6, the inclined reinforcement section 101 and the clamping plate are firmly connected, and the movable fastening steel plate clamp 5 is fixedly connected to the reinforcing steel plate 8 through the welding bolts 7, which is convenient for installation and disassembly.

[0031] Furthermore, the anchoring steel plate 3 is arranged on the lower plate surface of the prestressed carbon fiber plate 1 and is fixedly connected to the prestressed carbon fiber plate 1 and the bottom of the beam body 13 through the chemical anchor rod 2. The chemical anchor rod 2 passes through the anchoring steel plate 3 and the prestressed carbon fiber plate 1 from bottom to top and is inserted into the beam body 13, thereby firmly connecting the prestressed carbon fiber plate 1 to the bottom of the beam body 13, playing a good reinforcement role, and improving the service life and use safety of the beam body 13.

[0032] Furthermore, the wedge-shaped plate 6 is bonded to the surface of the inclined reinforcement section 101 by adhesive. The wedge-shaped plate 6 is a wedge-shaped plastic plate. In this embodiment, the wedge-shaped plastic plate is firmly bonded to the surface of the inclined reinforcement section 101 by adhesive, and the movable fastening steel plate clamp 5 is used to clamp the wedge-shaped plastic plate, so that the movable fastening steel plate clamp 5 is more firmly connected to the prestressed carbon fiber plate 1.

[0033] Furthermore, the fixing portion 111 is fixed to the bottom of the beam body 13 through the chemical anchor rod 2. The chemical anchor rod 2 passes through the fixing portion 111 and is inserted into the beam body 13, so as to stably fix the tension end steel 11 to the bottom of the beam body 13.

[0034] When the prestressed carbon fiber plate tensioning anchoring device of the utility model is used, the following steps are adopted for installation:

[0035] (1) Use adhesive to stick the prestressed carbon fiber plate 1 to the contact surface at the bottom of the beam body 13; (2) Complete the laying of the A node steel plate 3 and tighten the chemical anchor 2; (3) Complete the laying of the B node steel plate 3 and tighten the chemical anchor 2 slightly; (4) Use strong adhesive to stick the wedge-shaped plastic plate on the prestressed carbon fiber plate 1; (5) Close the movable fastening steel plate clamp 5 and tighten the clamp bolt 4; (6) Pass the welding bolt 7 on the movable fastening steel plate clamp 5 through the long strip screw hole reserved in the reinforcement steel plate 8 and tighten the nut; (7) Drill a hole on the bottom of the beam body 13, install the tensioning end steel 11, and tighten the chemical anchor 2; (8) Pass the tensioning bolt 9 through the tensioning end steel 11, screw it into the screw hole reserved in the reinforcement steel plate 8, and tighten the adjustment nut 10; (9) Adjust the nut 10 with a torque wrench according to the designed tension value.

[0036] During the construction of the prestressed carbon fiber plate tensioning and anchoring device of the utility model, the carbon fiber plate can be tensioned without a jack, the construction is convenient, the production cost is reduced, the production cycle is shortened, and the reinforcement effect is good.

[0037] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A prestressed carbon fiber plate tensioning and anchoring device, characterized in that: It includes a prestressed carbon fiber plate, a movable fastening steel plate clamp, a tensioning end steel, a tensioning bolt and an adjusting nut. The prestressed carbon fiber plate includes a main section and an inclined reinforcement section connected to one end of the main section. Both ends of the main section are provided with anchoring steel plates for fixing the main section to the bottom of the beam body; the movable fastening steel plate clamp clamps the inclined reinforcement section; the tensioning end steel includes a fixing portion fixedly connected to the bottom of the beam body and an adjusting portion connected to one end of the fixing portion and extending downward; one end of the tensioning bolt is fixedly connected to the movable fastening steel plate clamp, and the other end of the tensioning bolt passes through the adjusting portion and is connected to the adjusting nut.

2. The prestressed carbon fiber plate tensioning and anchoring device according to claim 1, characterized in that: The upper end surface and the lower end surface of the inclined reinforcement section are both provided with wedge-shaped plates, and the movable fastening steel plate clamp is clamped on one side of the two wedge-shaped plates away from the inclined reinforcement section.

3. The prestressed carbon fiber plate tensioning and anchoring device according to claim 2, characterized in that: It also includes a reinforcing steel plate and a welding bolt, one side of the reinforcing steel plate is connected to an end of a movable fastening steel plate clamp away from the main section, and the other side of the reinforcing steel plate is connected to a tensioning bolt; one end of the welding bolt passes through the reinforcing steel plate and is fixedly connected to the reinforcing steel plate, and the outer peripheral surface of the other end of the welding bolt is welded to the movable fastening steel plate clamp.

4. The prestressed carbon fiber plate tensioning and anchoring device according to claim 3, characterized in that: The movable steel plate fastening clamp includes a clamp bolt and two oppositely arranged clamping plates, the end of the inclined reinforcement section away from the main section and the wedge plate are both located between the two clamping plates, the end surfaces of the two clamping plates away from the main section are both abutted against one side plate surface of the reinforcement steel plate, and the clamp bolt is used to fix the two clamping plates, the two wedge plates and the inclined reinforcement section in connection.

5. The prestressed carbon fiber plate tensioning and anchoring device according to claim 4, characterized in that: The number of the clamp bolts is at least two, and the clamp bolts pass through two clamping plates, two wedge plates and the inclined reinforcement section.

6. The prestressed carbon fiber plate tensioning and anchoring device according to claim 4, characterized in that: The number of the welding bolts is at least two; one end of at least one welding bolt is connected to the upper end of the reinforcing steel plate, and the outer peripheral surface of the other end is welded to the side plate surface of a clamping plate away from the wedge plate; one end of at least one welding bolt is connected to the lower end of the reinforcing steel plate, and the outer peripheral surface of the other end is welded to the side plate surface of another clamping plate away from the wedge plate.

7. The prestressed carbon fiber plate tensioning and anchoring device according to claim 1, characterized in that: The anchoring steel plate is arranged on the lower plate surface of the prestressed carbon fiber plate and is fixedly connected to the prestressed carbon fiber plate and the bottom of the beam body through chemical anchor rods.

8. The prestressed carbon fiber plate tensioning and anchoring device according to claim 2, characterized in that: The wedge-shaped plate is bonded to the surface of the inclined reinforcement section by adhesive.

9. The prestressed carbon fiber plate tensioning and anchoring device according to claim 2, characterized in that: The wedge-shaped plate is a wedge-shaped plastic plate.

10. The prestressed carbon fiber plate tensioning and anchoring device according to claim 1, characterized in that: The fixing part is fixed to the bottom of the beam body by chemical anchor rods.

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