Preformed hole plugging prefabricated part

Abstract

The utility model relates to a preformed hole plugging prefabricated member which comprises a bottom plate, a split screw, reinforcing ribs and a reinforcing structure, the split screw is arranged in the center of the bottom plate, the reinforcing ribs are arranged on the periphery of the split screw, the reinforcing structure is arranged at one end of the split screw, and the distance between the reinforcing structure and the bottom plate is equal to the depth of a preformed hole. The reinforcing structure comprises formworks, a supporting plate, a reinforcing plate and tightening nuts, the supporting plate and the reinforcing plate are sequentially arranged on the opposite-pull screw rod, the tightening nuts are arranged at the end of the opposite-pull screw rod, and the formworks are arranged on the two sides of the supporting plate. The hidden danger of leakage of the outer wall is reduced, the integrality of the preformed hole and the shear wall body is improved, and the engineering quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building reserved hole plugging, in particular to a precast part for plugging reserved holes. Background Art

[0002] The cantilever scaffolding technology is commonly used in the construction of high-rise and super high-rise civil buildings. However, the plugging of the holes left after the I-beam in the scaffolding passes through the shear wall structure has become a difficult point in construction. Since the holes need to be cast in place for the second time, the external protective scaffolding has been removed at this time, and the formwork reinforcement is relatively difficult. Many projects use solid bricks and mortar for plugging, which easily causes problems such as local wall strength deficiency and external wall leakage, reducing the project strength and affecting the project quality. Summary of the Invention

[0003] In order to overcome the problems of the prior art, the utility model provides a precast part for plugging reserved holes. The plugging precast part is arranged in the reserved hole, and the reinforcement structure is connected by the tension rod. The conical hopper-shaped structure of the reinforcement structure guides high-strength concrete into the reserved hole to plug the reserved hole. The plugged reserved hole improves the overall strength of the shear wall, prevents the hidden danger of external wall leakage, and is beneficial to improving the project quality.

[0004] In order to achieve the above object, the utility model adopts the following technical solutions:

[0005] A precast part for plugging reserved holes includes a bottom plate, a tension rod, a reinforcing rib and a reinforcement structure. The tension rod is arranged at the center of the bottom plate, the reinforcing ribs are arranged around the tension rod, and one end of the tension rod is provided with the reinforcement structure. The reinforcement structure is spaced from the bottom plate by a distance equal to the depth of the reserved hole. The reinforcement structure includes a formwork, a support plate, a reinforcement plate and a tightening nut. The support plate and the reinforcement plate are sequentially arranged on the tension rod, the tightening nut is arranged at the end of the tension rod, and the formwork is arranged on both sides of the support plate.

[0006] Further, the bottom plate is tightly fitted with the reserved hole.

[0007] Further, the size of the tension rod is larger than the sum of the depth of the reserved hole and the thickness of the reinforcement structure.

[0008] Further, the width of the reinforcement structure is the same as the width of the hole opening.

[0009] Further, the formwork is of a conical hopper type.

[0010] Further, the height of the formwork is 100-150 mm larger than the height of the reserved hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. Use the conical hopper structure with a reinforcement structure to introduce concrete with a strength grade higher than that of the shear wall into the reserved hole. The high-strength concrete seals the reserved hole, improving the structural strength at the position of the reserved hole and enhancing the overall strength of the shear wall.

[0013] 2. The tension bolts and reinforcing bars are left in the sealed reserved hole to stabilize the concrete in the reserved hole, enhance the strength of the concrete in the reserved hole, reduce the potential for external wall leakage, and improve the integrity of the reserved hole and the shear wall.

[0014] 3. The combination of the reserved hole and the shear wall into one body is beneficial to the overall construction of the shear wall and conducive to improving the project quality. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a precast part for sealing a reserved hole according to the present utility model.

[0016] Figure 2 It is a schematic structural diagram of the bottom plate, tension bolts and reinforcing bars according to the present utility model.

[0017] Figure 3 It is a schematic structural diagram of the process of sealing the reserved hole according to the present utility model.

[0018] Figure 4 It is a schematic structural diagram of the removal of the reinforcement structure according to the present utility model.

[0019] Figure 5 It is a schematic structural diagram of the structure for sealing the reserved hole according to the present utility model.

[0020] In the figure: 1 bottom plate; 2 tension bolts; 3 reinforcing bars; 4 support plate; 5 reinforcement plate; 6 tightening nut; 7 formwork; 8 high-strength concrete; 9 shear wall; 10 reserved hole. Detailed Embodiment

[0021] The following further describes the detailed embodiment of the present utility model in conjunction with the drawings:

[0022] As Figures 1 - 5 shown, the working principle of a precast part for sealing a reserved hole is as follows: The bottom plate 1 is arranged at the bottom of the reserved hole 10. The reserved hole 10 holds the bottom plate 1. The tension bolt 2 at the center of the bottom plate 1 is connected to the reinforcement structure. The tightening nut 6 presses the reinforcement structure against the position of the opening of the reserved hole 10 on the wall surface of the shear wall 9. The hopper-shaped structure of the reinforcement structure introduces the high-strength concrete 8 into the reserved hole 10. After the high-strength concrete 8 solidifies, the reinforcement structure is disassembled, and the high-strength concrete 8 protruding from the surface of the shear wall 9 at the opening of the reserved hole 10 and the tension bolt 2 are removed. The high-strength concrete 8 sealed in the reserved hole 10 and the shear wall 9 form an integral body, improving the overall strength of the shear wall 9, reducing the potential for external wall leakage, and being conducive to improving the project quality.

[0023] As Figures 1 - 5 shown, a precast member for plugging a reserved hole includes a bottom plate 1, a tension rod 2, reinforcing ribs 3 and a reinforcement structure. A tension rod 2 is arranged at the center of the bottom plate 1, and reinforcing ribs 3 are arranged around the tension rod 2. The reinforcing ribs 3 are distributed in a claw shape around the tension rod 2. After being plugged with high-strength concrete 8, the reinforcing ribs 3 in the claw shape grip the high-strength concrete 8 in the reserved hole 10 in the reserved hole 10 to prevent the high-strength concrete 8 from leaking. A reinforcement structure is arranged at one end of the tension rod 2. The reinforcement structure and the bottom plate 1 are spaced apart by a distance equal to the depth of the reserved hole 10. The tension rod 2 connects the bottom plate 1 and the reinforcement structure. The bottom plate 1 is arranged at the bottom of the reserved hole 10, and the reinforcement structure abuts against the wall surface of the shear wall 9 at the opening of the reserved hole 10. A tightening nut 6 arranged on the outer side of the reinforcement structure cooperates with the tension rod 2 to fasten the reinforcement structure to the wall surface of the shear wall 9 at the opening of the reserved hole 10. The reinforcement structure includes a formwork 7, a support plate 4, a reinforcement plate 5 and a tightening nut 6. The support plate 4 and the reinforcement plate 5 are sequentially arranged on the tension rod 2. A tightening nut 6 is arranged at the end of the tension rod 2. Forms 7 are arranged on both sides of the support plate 4.

[0024] Further, the bottom plate 1 is in a tight fit with the reserved hole 10, and the reserved hole 10 clamps the bottom plate 1 at the bottom of the reserved hole 10.

[0025] Further, the size of the tension rod 2 is larger than the sum of the depth of the reserved hole 10 and the thickness of the reinforcement structure.

[0026] Further, the width of the reinforcement mechanism is the same as the width of the opening of the reserved hole 10.

[0027] Further, the formwork 7 is in the shape of a conical hopper. The formwork 7 and the support plate 4 form a conical hopper at the position of the wall surface of the shear wall 9 at the opening of the reserved hole 10 to form a guide, and the high-strength concrete 8 is introduced into the reserved hole 10 through the reinforcement structure.

[0028] Further, the height of the formwork 7 is 100 - 150 mm greater than the height of the reserved hole 10.

[0029] As Figures 1 - 5 shown, the using method of the precast member for plugging the reserved hole: After loosening the stones and chiseling and cleaning the concrete around the opening of the reserved hole 10, install the precast member in place, brush neat cement slurry on the interface of the new and old concrete. After the reinforcement structure is fastened and fixed, pour high-strength concrete 8 with a strength grade one higher than that of the shear wall concrete. After the strength of the high-strength concrete 8 reaches the design strength, remove the formwork 7 and chisel off the excess concrete. Cut the exposed tension rod 2 with an angle grinder, and level the chiseled surface with putty to repair the shear wall 9 and the reserved hole 10 into a whole.

[0030] As described above, it is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

[0031] The following embodiments are implemented on the premise of the technical solution of the present utility model, and detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments. The methods used in the following embodiments are all conventional methods unless otherwise specified.

[0032]

Embodiment

[0033] As Figures 1 - 5 shown, the bottom plate 1 of the prefabricated part for plugging the reserved hole is made of a 200x200x10mm steel plate, the tension rod 2 is an M14 full-threaded rod with L = 400mm, and the reinforcing rib 3 is formed by welding 4 φ8mm threaded steel bars with L = 120mm in a claw shape.

[0034] The support plate 4 of the reinforcement structure is made of a 15mm thick wood glue board, the reinforcement plate 5 is reinforced with 40x70mm wooden beams, the template 7 is in the shape of a conical hopper, and the height of the reinforcement structure is 100mm higher than the top elevation of the reserved hole 10, and the net width is the same as the width of the hole.

[0035] The concrete for plugging is a slightly expanded fine aggregate concrete with a strength grade one level higher than that of the shear wall concrete, and is filled into the reserved hole 10 through the reinforcement structure.

[0036] After the concrete strength reaches the design strength of 2.5N / mm 2 ², remove the formwork 7, chisel off the excess concrete, cut the exposed tension rod 2 with an angle grinder, level the chiseled surface with putty, and repair the shear wall 9 and the reserved hole 10 into a whole.

Claims

1. A prefabricated part for plugging a reserved hole, characterized in that: It includes a base plate, tension screws, reinforcement ribs and a reinforcement structure. The tension screw is arranged at the center of the base plate, reinforcement ribs are arranged around the tension screws, a reinforcement structure is arranged at one end of the tension screw, and the distance between the reinforcement structure and the base plate is equal to the depth of the reserved hole. The reinforcement structure includes a template, a support plate, a reinforcement plate and a tightening nut. The support plate and the reinforcement plate are arranged on the tension screws in sequence, tightening nuts are arranged at the ends of the tension screws, and templates are arranged on both sides of the support plate.

2. A prefabricated component for plugging a reserved hole according to claim 1, characterized in that: The bottom plate is tightly matched with the reserved hole.

3. The prefabricated component for plugging a reserved hole according to claim 1, characterized in that: The size of the tension screw is greater than the sum of the depth of the reserved hole and the thickness of the reinforcement structure.

4. The prefabricated component for plugging a reserved hole according to claim 1, characterized in that: The width of the reinforcement structure is the same as the width of the hole.

5. The prefabricated component for plugging a reserved hole according to claim 1, characterized in that: The template adopts a conical hopper type.

6. The prefabricated component for plugging a reserved hole according to claim 1, characterized in that: The template height is 100-150mm greater than the reserved hole height.

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