Construction method for plugging reserved holes in exterior wall finished products

Abstract

The present invention relates to building construction, in particular to a construction method for plugging reserved holes on the finished exterior wall. The method includes the following steps: A. Fabricate a plugging formwork assembly; B. Bind the steel bars of the wall structure, and embed lower fixing rods and upper fixing rods at the four corners of the reserved hole; C. Set up the wall structure formwork and pour the wall structure concrete; D. Install the I-beam of the cantilever scaffold, and after the construction of the exterior wall is completed, remove the I-beam; E. Plug the reserved hole; F. After the concrete pouring is completed, insert a straight insert plate into the straight insert plate groove on the inner side of the wall, and remove the wedge-shaped insert plate; G. Cure the concrete. The construction of the present invention is standardized and the operation is convenient, which improves the construction efficiency, eliminates the risk of leakage, improves the plugging effect, and prevents the leakage of the exterior wall.

Description

Technical Field

[0001] The present invention relates to building construction, and particularly to a construction method for plugging reserved holes in finished exterior walls. Background Art

[0002] During the construction of high-rise buildings, reserved holes need to be made for the I-beams of the cantilevered scaffolding to pass through the main structure. On the I-beam layer of the cantilevered scaffolding, in order to enable the I-beams to pass through the exterior wall structure, wooden boxes are usually made by carpenters to isolate the exterior wall and the I-beams, ensuring that they can be smoothly removed later. This approach often results in incomplete removal of the wooden boxes and poor bonding between the newly poured concrete and the exterior wall structure during subsequent plugging, causing leakage. Chinese invention application No. 202010795630.8 discloses a plugging method for holes penetrating the exterior wall. This invention application uses tie bolts to connect the templates on both sides, with high costs and low construction efficiency. Summary of the Invention

[0003] The present invention aims to solve the above technical problems, thereby providing a construction method for plugging reserved holes in finished exterior walls, improving construction efficiency and ensuring the plugging effect.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A construction method for plugging reserved holes in finished exterior walls includes the following steps:

[0006] A. Fabricate a plugging formwork assembly

[0007] The plugging formwork assembly includes two lower fixing rods, two upper fixing rods, a straight plug board, and a wedge-shaped plug board. The outer end of the lower fixing rod is provided with a straight plug board groove, and the inner end of the lower fixing rod is provided with a straight plug board groove and a wedge-shaped plug board groove;

[0008] B. Bind the steel bars of the wall structure, and embed the lower fixing rods and upper fixing rods at the four corners of the reserved hole;

[0009] C. Set up the wall structure formwork and pour the wall structure concrete;

[0010] D. Install the I-beams of the cantilevered scaffolding. After the exterior wall construction is completed, remove the I-beams;

[0011] E. Plug the reserved hole

[0012] Insert the straight plug board into the straight plug board groove at the outer end of the lower fixing rod, insert the wedge-shaped plug board into the wedge-shaped plug board groove at the inner end of the lower fixing rod, and pour the concrete from the inner side of the wall;

[0013] F. After the concrete pouring is completed, insert the straight plug board into the straight plug board groove on the inner side of the wall and remove the wedge-shaped plug board;

[0014] G. Cure the concrete.

[0015] Compared with the prior art, the present invention adopting the above technical solution has the following beneficial effects:

[0016] The construction is standardized and the operation is convenient, which improves the construction efficiency, eliminates the risk of leakage, enhances the plugging effect, and prevents the external wall from leaking.

[0017] Furthermore, the optimized solution of the present invention is as follows:

[0018] The straight plug slot and the wedge-shaped plug slot at the inner end of the lower fixing rod are arranged adjacent to each other.

[0019] The wedge-shaped plug slot is located inside the straight plug slot.

[0020] The straight plug slot and the wedge-shaped plug slot are in an "E" shape.

[0021] The wedge-shaped plug includes a vertical portion and an inclined portion. The inclined portion is located at the upper end of the vertical portion and inclines towards the wall body.

[0022] The upper fixing rod and the lower fixing rod are respectively provided with support rods.

[0023] The support rods are poured into the wall structure.

[0024] Strip-shaped reinforcing plates are respectively provided at the upper ends of the outer plate surfaces of the straight plug and the wedge-shaped plug.

[0025] In step E, the concrete is micro-expansive concrete. Description of the Drawings

[0026] Figure 1 It is a longitudinal sectional view of the plugging formwork assembly according to an embodiment of the present invention;

[0027] Figure 2 It is a cross-sectional view of the plugging formwork assembly according to an embodiment of the present invention;

[0028] Figure 3 It is a schematic view of the lower fixing rod;

[0029] Figure 4 It is a schematic view of the installation of the lower fixing rod and the upper fixing rod;

[0030] Figure 5 It is a schematic view of the process of pouring concrete into the reserved hole;

[0031] Figure 6 It is a schematic view of replacing the wedge-shaped plug with the straight plug.

[0032] In the figure: lower fixing rod 1; straight insertion plate groove 1-1; wedge-shaped insertion plate groove 1-2; upper fixing rod 2; straight insertion plate 3; reinforcing plate 3-1; wedge-shaped insertion plate 4; vertical part 4-1; inclined part 4-2; support rod 5; wall structure 6; reserved hole 7. Detailed implementation mode

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0035] This embodiment provides a construction method for plugging reserved holes in the finished exterior wall, which is carried out according to the following steps:

[0036] A. Fabricate the plugging formwork assembly

[0037] The plugging formwork assembly is mainly composed of a lower fixing rod 1, an upper fixing rod 2, a straight insertion plate 3 and a wedge-shaped insertion plate 4 ( Figures 1 - 3 as shown). There are two lower fixing rods 1 and two upper fixing rods 2. The lower fixing rod 1 and the upper fixing rod 2 adopt square sleeves. The outer end of the lower fixing rod 1 is provided with a straight insertion plate groove 1-1, and the inner end of the lower fixing rod 1 is provided with a straight insertion plate groove 1-1 and a wedge-shaped insertion plate groove 1-2. The wedge-shaped insertion plate groove 1-2 is located outside the straight insertion plate groove 1-1. The straight insertion plate groove 1-1 and the wedge-shaped insertion plate groove 1-2 are in an E shape. The straight insertion plate groove 1-1 is used for inserting the straight insertion plate 3, and the wedge-shaped insertion plate groove 1-2 is used for inserting the wedge-shaped insertion plate 4. A support rod 5 is welded to the bottom surface of the lower fixing rod 1. The support rod 5 is perpendicular to the lower fixing rod 1. A support rod 5 is welded to the top surface of the upper fixing rod 2. The support rod 5 is perpendicular to the upper fixing rod 2. When pouring the concrete of the wall structure 6, the support rod 5 is poured into the wall structure 6.

[0038] There are two straight insertion plates 3 and one wedge-shaped insertion plate 4. The wedge-shaped insertion plate 4 is composed of a vertical part 4-1 and an inclined part 4-2. The inclined part 4-2 is located at the upper end of the vertical part 4-1, and the inclined part 4-2 inclines towards the inside of the wall structure 6. Strip-shaped reinforcing plates 3-1 are respectively welded to the upper ends of the outer plate surfaces of the straight insertion plate 3 and the wedge-shaped insertion plate 4.

[0039] B. Binding of steel bars for the wall structure 6. Embed the lower fixing rods 1 and the upper fixing rods 2 at the four corners of the reserved hole 7. The two lower fixing rods 1 are respectively located at both ends of the bottom surface of the reserved hole 7, and the two upper fixing rods 2 are respectively located at both ends of the top surface of the reserved hole 7. The open ends of the straight plug slots 1-1 and the wedge-shaped plug slots 1-2 of the two lower fixing rods 1 are arranged upward.

[0040] C. Support the formwork of the wall structure 6 and pour the concrete of the wall structure 6.

[0041] D. Install the I-beam of the cantilever scaffold. After the outer wall surface of the wall structure 6 is constructed, remove the I-beam.

[0042] E. Seal the reserved hole

[0043] Both of the two straight plug slots 1-1 of the lower fixing rod 1 are located outside the two wall surfaces of the wall structure 6. Insert the straight plug 3 into the straight plug slot 1-1 at the outer end of the lower fixing rod 1. The upper end of the straight plug 3 can be connected to the upper fixing rod 2 through bolts and angle-shaped connectors. Insert the wedge-shaped plug 4 into the wedge-shaped plug slot 1-2 at the inner end of the lower fixing rod 1. Pour the concrete into the reserved hole 7 from the inner side of the wall structure 6. The concrete is slightly expanding concrete. The wedge-shaped plug 4 is convenient for pouring and vibrating the slightly expanding concrete on the inner side.

[0044] After the concrete pouring in the reserved hole 7 is completed, insert the straight plug 3 into the straight plug slot 1-1 on the inner side of the wall structure 6 and remove the wedge-shaped plug 4.

[0045] G. Cure the concrete.

[0046] This construction method changes the traditional wooden box method, making the installation more standardized, simple and fast, and ensuring a good anti-leakage effect for the outer wall. The structure of the upper fixing rod 2 in this construction method can also be the same as that of the lower fixing rod 1, and the straight plug 3 is inserted into the straight plug slot 1-1 from the side.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A construction method for sealing reserved holes in a finished exterior wall, comprising the following steps: A. Make the plugging template components The plugging template assembly includes two lower fixing rods, two upper fixing rods, a straight plug plate and a wedge-shaped plug plate, the outer end of the lower fixing rod is provided with a straight plug plate groove, and the inner end of the lower fixing rod is provided with a straight plug plate groove and a wedge-shaped plug plate groove; B. Tie up the steel bars of the wall structure, and embed the lower fixing rod and the upper fixing rod at the four corners of the reserved holes; C. Support the wall structure formwork and pour the wall structure concrete; D. Install the cantilever scaffolding I-beams, and remove the I-beams after the exterior wall construction is completed; E. Sealing reserved holes Insert the straight plug plate into the straight plug plate groove at the outer end of the lower fixing rod, insert the wedge-shaped plug plate into the wedge-shaped plug plate groove at the inner end of the lower fixing rod, and pour concrete from the inner side of the wall; F. After the concrete pouring is completed, insert the straight plug board into the straight plug board groove on the inner side of the wall and remove the wedge plug board; G. Concrete curing; The straight plug-in plate groove and the wedge-shaped plug-in plate groove at the inner end of the lower fixing rod are arranged adjacent to each other; The wedge-shaped insert plate slot is located inside the straight insert plate slot; The straight plug-in plate slot and the wedge-shaped plug-in plate slot are in an E shape.

2. The construction method for sealing pre-reserved holes in finished exterior wall products according to claim 1, characterized in that: The wedge-shaped plug plate comprises a vertical portion and an inclined portion, wherein the inclined portion is located at the upper end of the vertical portion and is inclined toward the wall.

3. The construction method for sealing pre-reserved holes in finished exterior wall products according to claim 1, characterized in that: The upper fixing rod and the lower fixing rod are respectively provided with supporting rods.

4. The construction method for sealing pre-reserved holes in finished exterior wall products according to claim 3 is characterized by: The support rods are cast in the wall structure.

5. The construction method for sealing pre-reserved holes in finished exterior wall products according to claim 1 is characterized by: The upper ends of the outer plate surfaces of the straight plug plate and the wedge-shaped plug plate are respectively provided with strip-shaped reinforcing plates.

6. The construction method for sealing pre-reserved holes in finished exterior wall products according to claim 1, characterized in that: In the step E, the concrete is slightly expansive concrete.

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