Bidirectional carbon fiber grid reinforcing structure after punching of reinforced concrete floor

Abstract

The utility model discloses a two-way carbon fiber grid reinforcing structure after a reinforced concrete floor slab is perforated, which comprises a U-shaped stiffening plate arranged on the surface of a main body floor slab, rectangular holes are formed in the surface of the main body floor slab, and two-way carbon fiber grid cloth is fixedly connected to the surface of the main body floor slab. The two-way carbon fiber gridding cloth is close to the position of the rectangular hole, a U-shaped stiffening plate is arranged on the surface of the two-way carbon fiber gridding cloth, two screw holes are formed in the surface of the U-shaped stiffening plate, and inner cavities of the screw holes are in threaded connection with bolts; according to the utility model, the U-shaped stiffening plate is fixedly connected with the bidirectional carbon fiber gridding cloth and the main body floor by using the bolts, and then the stiffening rods are used, so that the U-shaped stiffening plate obtains extra tensile force with the main body floor through the stiffening rods, and the purpose that after the bidirectional carbon fiber gridding cloth and the main body floor are bonded and fixed, the two-way carbon fiber gridding cloth and the main body floor are bonded and fixed is achieved. And the purpose of obtaining extra fixing force between the bidirectional carbon fiber gridding cloth and the main body floor is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of reinforced concrete floor slabs, and in particular relates to a bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after openings. Background Technology

[0002] Openings in reinforced concrete floor slabs are usually made to meet various needs such as building function modification, equipment installation, space optimization, and improvement of the building's physical environment. After openings are made in the floor slab, there will be a large stress concentration at the short side or corner of the opening. The reduction of the slab reinforcement will also lead to a decrease in load-bearing capacity. However, bidirectional carbon fiber mesh has good tensile strength.

[0003] After normal opening, bidirectional carbon fiber mesh is typically bonded to the surface of the concrete component using a high-performance matching resin impregnating adhesive. This adds the bidirectional carbon fiber mesh to the opening in the floor slab, forming a unified whole with the concrete to effectively distribute the tensile force borne by the floor slab. To provide additional fixing force between the bidirectional carbon fiber mesh and the main floor slab after bonding and fixing, a bidirectional carbon fiber mesh reinforcement structure for openings in reinforced concrete floor slabs was designed. This structure, through the use of U-shaped stiffening plates and stiffening rods, provides fixing tension between the ends of the bidirectional carbon fiber mesh and the surface of the main floor slab after fixing, thus providing additional fixing force between the bidirectional carbon fiber mesh and the main floor slab after bonding and fixing. Utility Model Content

[0004] The purpose of this utility model is to provide a bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after openings are made. This structure provides additional fixing force between the bidirectional carbon fiber mesh and the main floor slab after the mesh is bonded and fixed, thus solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs with openings, comprising a U-shaped stiffening plate disposed on the surface of the main floor slab: a rectangular hole is opened on the surface of the main floor slab, a bidirectional carbon fiber mesh is fixedly connected to the surface of the main floor slab, the bidirectional carbon fiber mesh is close to the rectangular hole, a U-shaped stiffening plate is disposed on the surface of the bidirectional carbon fiber mesh, two screw holes are opened on the surface of the U-shaped stiffening plate, bolts are threaded into the inner cavity of the screw holes, the U-shaped stiffening plate is fixedly connected to the bidirectional carbon fiber mesh and the surface of the main floor slab by bolts, two expanded plates are welded to the bottom of the U-shaped stiffening plate, multiple rectangular plates are fixedly connected to the surface of the main floor slab by bolts, a coarse-diameter positioning head is welded to the surface of the rectangular plates, a positioning head is welded to the surface of the expanded plates, a stiffening rod is rotatably connected to the surface of the positioning head, and the stiffening rod is fixedly connected to the surface of the coarse-diameter positioning head.

[0006] Preferably, the bolt surface is slidably connected with an isolation gasket, which is located between the bolt and the top of the U-shaped stiffening plate.

[0007] Preferably, the surface of the expanded plate has two circular holes, and the inner cavity of the circular holes is threaded with a small bolt.

[0008] Preferably, the expanded panel is fixedly connected to the main floor slab by small bolts.

[0009] Preferably, a circular washer is slidably connected to the surface of the small bolt, and the circular washer is located between the top of the small bolt and the expansion plate.

[0010] Preferably, the surface of the bidirectional carbon fiber mesh is fixedly connected with positioning bolts.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses bolts to fix the U-shaped stiffening plate to the bidirectional carbon fiber mesh and the main floor slab, and then uses stiffening rods to make the U-shaped stiffening plate have additional tension between it and the main floor slab. This achieves the purpose of providing additional fixing force between the bidirectional carbon fiber mesh and the main floor slab after they are bonded and fixed.

[0013] 2. By setting up an isolation gasket, this utility model can provide buffer protection between the bolt and the top of the U-shaped stiffening plate, thus preventing wear on the top of the U-shaped stiffening plate.

[0014] 3. By using small bolts, this utility model can provide an anchoring force between the expanded sheet and the main floor slab, thus preventing accidental warping of the expanded sheet during the support of the stiffening rod. Attached Figure Description

[0015] in:

[0016] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;

[0017] Figure 2 This is a top view schematic diagram of one embodiment of the present utility model;

[0018] Figure 3 This is a partial split-out front view diagram of one embodiment of the present invention;

[0019] Figure 4 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0020] Figure 5 This is one embodiment of the present utility model. Figure 3 A magnified view of point B in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Main floor slab; 2. Rectangular opening; 3. Two-way carbon fiber mesh; 4. U-shaped stiffening plate; 5. Bolt; 6. Expanded face plate; 7. Rectangular plate; 8. Coarse diameter positioning head; 9. Positioning head; 10. Stiffening rod; 11. Isolation gasket; 12. Small bolt; 13. Circular gasket; 14. Positioning bolt. Detailed Implementation

[0023] In the following description, embodiments of the bidirectional carbon fiber mesh reinforcement structure for openings in reinforced concrete floor slabs according to the present invention will be described with reference to the accompanying drawings. Example 1

[0024] Figure 1-5This invention illustrates a bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after openings, according to an embodiment of the present invention. The structure includes: a U-shaped stiffening plate 4 disposed on the surface of the main floor slab 1; a rectangular opening 2 is provided on the surface of the main floor slab 1; a bidirectional carbon fiber mesh 3 is fixedly connected to the surface of the main floor slab 1; the bidirectional carbon fiber mesh 3 is positioned close to the rectangular opening 2; the U-shaped stiffening plate 4 is disposed on the surface of the bidirectional carbon fiber mesh 3; two screw holes are provided on the surface of the U-shaped stiffening plate 4; bolts 5 are threaded into the inner cavity of the screw holes; the U-shaped stiffening plate 4 is fixedly connected to the bidirectional carbon fiber mesh 3 and the surface of the main floor slab 1 by bolts 5; and two enlarged surfaces are welded to the bottom of the U-shaped stiffening plate 4. Multiple rectangular plates 7 are fixedly connected to the surface of the main floor slab 1 by bolts. A coarse-diameter positioning head 8 is welded to the surface of the rectangular plate 7. A positioning head 9 is welded to the surface of the expanded plate 6. A stiffening rod 10 is rotatably connected to the surface of the positioning head 9. The stiffening rod 10 is fixedly connected to the surface of the coarse-diameter positioning head 8. An isolation gasket 11 is slidably connected to the surface of the bolt 5. The isolation gasket 11 is located between the bolt 5 and the top of the U-shaped stiffening plate 4. By setting the isolation gasket 11, the bolt 5 and the top of the U-shaped stiffening plate 4 can be protected by buffering force, which can prevent the top of the U-shaped stiffening plate 4 from being worn. A positioning bolt 14 is fixedly connected to the surface of the bidirectional carbon fiber mesh cloth 3. Example 2

[0025] Figure 1-5 This invention illustrates a bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after openings, according to an embodiment of the present invention. The structure includes: a U-shaped stiffening plate 4 disposed on the surface of the main floor slab 1; a rectangular opening 2 is provided on the surface of the main floor slab 1; a bidirectional carbon fiber mesh 3 is fixedly connected to the surface of the main floor slab 1; the bidirectional carbon fiber mesh 3 is positioned close to the rectangular opening 2; the U-shaped stiffening plate 4 is disposed on the surface of the bidirectional carbon fiber mesh 3; two screw holes are provided on the surface of the U-shaped stiffening plate 4; bolts 5 are threaded into the inner cavity of the screw holes; the U-shaped stiffening plate 4 is fixedly connected to the bidirectional carbon fiber mesh 3 and the surface of the main floor slab 1 by bolts 5; two expansion plates 6 are welded to the bottom of the U-shaped stiffening plate 4; and multiple... A rectangular plate 7 has a coarse-diameter positioning head 8 welded to its surface. A positioning head 9 is welded to the surface of an expanded plate 6. A stiffening rod 10 is rotatably connected to the surface of the positioning head 9. The stiffening rod 10 is fixedly connected to the surface of the coarse-diameter positioning head 8. Two round holes are opened on the surface of the expanded plate 6. Small bolts 12 are threaded into the inner cavity of the round holes. The expanded plate 6 is fixedly connected to the main floor slab 1 by the small bolts 12. The small bolts 12 can provide an anchoring force between the expanded plate 6 and the main floor slab 1, and can prevent the expanded plate 6 from accidentally warping during the support of the stiffening rod 10. A circular washer 13 is slidably connected to the surface of the small bolt 12. The circular washer 13 is located between the small bolt 12 and the top of the expanded plate 6.

[0026] Working principle: When using this utility model, the user uses a high-performance matching resin impregnation adhesive to bond the bidirectional carbon fiber mesh 3 to the surface of the concrete component. Then, bolts 5 are used to fix the U-shaped stiffening plate 4 to the bidirectional carbon fiber mesh 3 and the main floor slab 1, thereby reinforcing the bidirectional carbon fiber mesh 3 and the main floor slab 1. Next, the end of the stiffening rod 10 is rotated to the surface of the positioning head 9, and the rectangular piece 7 is fixed in position according to the deflection angle of the stiffening rod 10. Then, the stiffening rod 10 is pressed downward, so that the end of the stiffening rod 10 opposite to the positioning head 9 is sleeved on the surface of the coarse diameter positioning head 8. This allows the U-shaped stiffening plate 4 to be tensile between the stiffening rod 10 and the main floor slab 1, thus providing additional fixing force between the bidirectional carbon fiber mesh 3 and the main floor slab 1 after bonding and fixing.

[0027] In summary, this bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs, after opening, uses bolts 5 to fix the U-shaped stiffening plate 4 to the bidirectional carbon fiber mesh 3 and the main floor slab 1. Subsequently, stiffening rods 10 are used to provide additional tension between the U-shaped stiffening plate 4 and the main floor slab 1 through the stiffening rods 10. This achieves the purpose of providing additional fixing force between the bidirectional carbon fiber mesh 3 and the main floor slab 1 after bonding and fixing.

Claims

1. A bidirectional carbon fiber mesh reinforcement structure for openings in reinforced concrete floor slabs, characterized in that, Includes a U-shaped stiffening plate (4) disposed on the surface of the main floor slab (1): the surface of the main floor slab (1) has rectangular holes (2), and a two-way carbon fiber mesh (3) is fixedly connected to the surface of the main floor slab (1). The two-way carbon fiber mesh (3) is positioned close to the rectangular holes (2), and a U-shaped stiffening plate (4) is disposed on the surface of the two-way carbon fiber mesh (3). The surface of the U-shaped stiffening plate (4) has two screw holes, and bolts (5) are threaded into the inner cavity of the screw holes. The U-shaped stiffening plate (4) is connected by... Bolts (5) are fixedly connected to the surfaces of the bidirectional carbon fiber mesh (3) and the main floor slab (1). Two expansion plates (6) are welded to the bottom of the U-shaped stiffening plate (4). Multiple rectangular plates (7) are fixedly connected to the surface of the main floor slab (1) by bolts. A coarse diameter positioning head (8) is welded to the surface of the rectangular plate (7). A positioning head (9) is welded to the surface of the expansion plate (6). A stiffening rod (10) is rotatably connected to the surface of the positioning head (9). The stiffening rod (10) is fixedly connected to the surface of the coarse diameter positioning head (8).

2. The bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after opening, as described in claim 1, is characterized in that... An isolation gasket (11) is slidably connected to the surface of the bolt (5), and the isolation gasket (11) is located between the top of the bolt (5) and the U-shaped stiffening plate (4).

3. The bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after opening, as described in claim 2, is characterized in that... The surface of the expanded plate (6) has two round holes, and the inner cavity of the round holes is threaded with a small bolt (12).

4. The bidirectional carbon fiber mesh reinforcement structure for openings in reinforced concrete floor slabs according to claim 3, characterized in that, The expansion plate (6) is fixedly connected to the main floor slab (1) by small bolts (12).

5. The bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after opening according to claim 4, characterized in that, A circular washer (13) is slidably connected to the surface of the small bolt (12), and the circular washer (13) is located between the top of the small bolt (12) and the expansion plate (6).

6. The bidirectional carbon fiber mesh reinforcement structure for reinforced concrete floor slabs after opening, as described in claim 5, is characterized in that... The surface of the bidirectional carbon fiber mesh (3) is fixedly connected with a positioning bolt (14).

Images