Wall on-site holing construction method of ALC (autoclaved lightweight concrete) plate and special reinforcing structure thereof

Abstract

The invention belongs to the technical field of secondary reconstruction of fabricated buildings, and particularly relates to an on-site holing construction method for an ALC (autoclaved lightweight concrete) plate wall and a special hole reinforcing structure of the on-site holing construction method.The construction method comprises the steps that firstly, an embedded seam is cut according to the size of a required hole; the reinforcing angle steel is nailed into the embedded seam, and the hole opening range is defined; then, the hole opening range delineated by the reinforcing angle steel is subjected to core digging treatment; connecting and fixing the reinforcing steel angles on the inner and outer sides of the hole by using reinforcing flat steel; the reinforcing structure comprises reinforcing angle steels which are connected end to end along the periphery of the hole; the stainless steel pipe reinforcing nail is fixedly connected to the inner wall of the reinforcing angle steel and is nailed into the ALC wall body; the reinforcing flat steel is connected with the reinforcing angle steel on the inner and outer sides of the hole. According to the scheme, construction is easy, operation is convenient, the damage degree to an original structure is small, it is effectively ensured that the strength, rigidity and durability of the periphery of the hole meet the requirements, and potential safety hazards existing in a traditional hole opening mode are eliminated.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building secondary renovation technology, specifically involving a method for on-site wall opening construction of ALC panels and its special opening reinforcement structure. Background Technology

[0002] Due to its advantages such as light weight, heat insulation, fire resistance, and easy cutting, ALC panels have been widely used in prefabricated steel structures and concrete structural walls. With the frequent adjustments made by owners to the functions of buildings, the demand for adding door and window openings to existing ALC walls is increasing.

[0003] For buildings with installed ALC panels, due to building ventilation modifications or pipeline construction, it is common to make openings in the walls on-site as construction progresses. When making new openings later, a quick reinforcement structure is used. Specifically, an electric hammer or cutting machine is used to drill through the wall at the marked location to create a partial hole. A simple steel frame or wooden frame is installed at the new opening location to provide temporary support. Then, reinforcing angle steel and hook bolts are used to fix the opening around one side.

[0004] The traditional construction method of drilling holes first and then providing support and protection has several drawbacks. Because ALC panels are brittle materials with low shear and tensile strength, stress concentration occurs after cutting, resulting in: 1) diagonal cracks at the corners of the openings; 2) the upper panels of the openings are prone to sinking and cracking; 3) the edges of the openings frequently chip after drilling or impact; and 4) the temporary supports have significant strength variations, making the wall prone to sudden fracture during removal, potentially causing falling objects and injuries. Clearly, the traditional construction method causes significant damage to the original wall structure and poses substantial safety hazards. There is an urgent need for a construction method that minimizes wall damage and ensures greater safety. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing construction method of drilling holes in existing autoclaved lightweight aerated concrete panel walls is prone to wall damage and low safety.

[0006] The technical solution adopted by the present invention to solve the aforementioned problem is as follows: A method for on-site wall drilling using ALC panels, comprising the following steps: Step 1: Based on the required opening design, mark the lines on the inner and outer surfaces of the ALC wall to determine the size of the opening. Use a cutting machine to cut the embedded joint along the marked lines on the surface of the ALC wall. Step two: Measure and cut the reinforcing angle steel material according to the size of the opening; Step 3: Insert the reinforcing angle steel into the embedded joints on both the inner and outer surfaces of the ALC wall. Step 4: Continue to use the hole-making tool to hollow out the area of ​​the hole defined by the reinforced angle steel. Step 5: After the core is cleaned, use reinforcing flat steel to connect and fix the reinforcing angle steel on both sides of the opening.

[0007] Compared with the prior art, the present invention employing the above method has the following advantages: For the construction of new openings in existing ALC walls, the operation is fast, safe and reliable, and it strengthens the wall with low stress. The operation causes minimal damage to the original wall structure and effectively ensures that the strength, rigidity and durability around the opening meet the requirements, while eliminating safety hazards.

[0008] As a preferred option, a further technical solution to the above structure is: The specific steps for nailing reinforcing angle steel into the ALC wall are as follows: insert one side of the reinforcing angle steel into the embedding joint, and place the other side of the angle steel against the surface of the ALC wall.

[0009] The beneficial effects obtained from the above features are as follows: In this example, angle steel is used as the support for the opening. One side of the angle steel is used as the edge protection of the opening when the hole is excavated, which makes the opening more aesthetically pleasing and provides better support.

[0010] After the reinforcing angle steel is cut, several stainless steel tube reinforcing nails are welded to the inner surface of the other side of the corner plate. When the corner plate of the reinforcing angle steel is inserted into the embedding seam, the stainless steel tube reinforcing nails are driven into the surface of the ALC wall to anchor the reinforcing angle steel to the wall.

[0011] The beneficial effect obtained from the above features is that the installation of stainless steel pipe reinforcing nails in this example enables the reinforcing angle steel to be reliably fixed to the wall.

[0012] The reinforcing angle steel on the left and right sides of the opening is equal to the design size of the opening, and the length of the reinforcing angle steel on the top and bottom sides of the opening is the sum of the design size of the opening and the width of the reinforcing angle steel on the left and right sides.

[0013] The beneficial effects obtained from the above features are as follows: the reinforcing angle steel on both sides of the opening of this structure abuts against the reinforcing angle steel on the upper and lower sides, which supports the wall and prevents the upper slab of the opening from sinking.

[0014] To address the aforementioned problem, the present invention also includes a dedicated reinforcement structure for the on-site wall drilling construction method of the above-mentioned ALC panels, the specific solution of which is as follows: A reinforcement structure for on-site openings in ALC (Alternating Current Concrete) wall panels includes: reinforcing angle steels, arranged end-to-end around the opening and respectively installed on the inner and outer surfaces of the ALC wall; stainless steel pipe reinforcing nails, fixed to the inner wall of the reinforcing angle steels and extending into the ALC wall to anchor the reinforcing angle steels to the ALC wall; and reinforcing flat steels, welded between the reinforcing angle steels on the inner and outer sides of the opening for connecting and fixing the reinforcing angle steels on both sides.

[0015] Compared with existing technologies, the advantages of adopting the above structure are: This structure is simple to construct and easy to operate, causes minimal damage to the original structure, effectively ensures that the strength, rigidity and durability around the opening meet the requirements, and eliminates the safety hazards of traditional opening methods. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an overall diagram of the reinforced structure provided by the present invention; Figure 3 This is a diagram illustrating the arrangement of the top and bottom angle steels and the left and right angle steels in this invention. Figure 4 This is a schematic diagram of cutting and embedding seams on the surface of an ALC panel wall in the construction method of this invention; Figure 5 This is a schematic diagram of the installation of reinforcing angle steel in the construction method of this invention; Figure 6 This is a preferred embodiment of the reinforcement angle steel arrangement of the present invention.

[0017] In the diagram: 1. Reinforcing angle steel; 101. Reinforcing angle steel on the left and right sides; 102. Reinforcing angle steel on the top and bottom sides; 2. Reinforcing flat steel; 3. ALC wall; 4. Stainless steel pipe reinforcing nail; 5. Embedded joint; 6. Opening. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments, which are intended only to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0019] See Figures 1 to 5 The present invention provides a method for on-site wall drilling of ALC panels, the specific construction steps of which are as follows: Step 1: Based on the required opening 6, mark the inner and outer surfaces of the ALC wall 3 with lines to determine the size of the opening 6. Use a cutting machine to cut the embedding seam 5 along the marked lines on the surface of the ALC wall 3. Optionally, the length of the embedding seam 5 can be greater than the designed size of the opening 6. Step 2: Measure and cut the reinforcing angle steel 1 according to the size of opening 6. Commonly, new openings 6 are rectangular, so four angle steel pieces need to be cut on each side, for a total of eight angle steel pieces required on both sides of the wall.

[0020] Step 3: Nail the reinforcing angle steel 1 into the embedded joint 5 on both the inner and outer sides of the ALC wall 3; the ends of the horizontally and vertically arranged reinforcing angle steel 1 on the opening 6 can be welded and fixed to form two angle steel frames based on the symmetry of the wall.

[0021] Specifically, the operation of nailing the reinforcing angle steel 1 into the ALC wall 3 is as follows: insert one side of the reinforcing angle steel 1 into the embedment joint 5, and place the other side of the angle steel 1 against the surface of the ALC wall 3. The stainless steel tube reinforcing nail 4 penetrates the other side of the symmetrical reinforcing angle steel 1. The other side of the angle steel 1 can be placed tightly against the wall surface or embedded in the wall surface to make the outer surface flush.

[0022] See Figure 2 To improve the connection stability between the reinforcing angle steel 1 and the ALC wall 3, after the reinforcing angle steel 1 is cut and before it is inserted into the embedding joint 5, several stainless steel pipe reinforcing nails 4 can be fixed to the inner wall of the reinforcing angle steel 1. When the corner plate of the reinforcing angle steel 1 is inserted into the embedding joint 5, the stainless steel pipe reinforcing nails 4 are nailed into the surface of the ALC wall 3 to anchor the reinforcing angle steel 1 to the wall.

[0023] Step 4: Continue to use the hole-making tool to hollow out the area of ​​the opening 6 defined by the reinforced angle steel 1; Step 5: After the core is cleaned, use reinforcing flat steel 2 to connect and fix the reinforcing angle steel 1 on both the inner and outer sides of the opening 6. The reinforcing flat steel 2 is connected to the opposite reinforcing angle steel 1 on both sides by welding or existing connection methods, so that the angle steel frames on both sides of the opening 6 are integrated as one unit. At the same time, the reinforcing flat steel 2 also has a protective function for the internal structure of the wall.

[0024] See Figure 2 , Figure 6 As a preferred option, when measuring and cutting the reinforcing angle steel 1, the length of the reinforcing angle steel 101 on both sides of the opening 6 is equal to the design size of the opening 6. The length of the reinforcing angle steel 102 on the top and bottom sides of the opening 6 is the sum of the set size of the opening 6 and the width of the reinforcing angle steel 101 on both sides. With this arrangement, the ends of the reinforcing angle steel 101 on both sides abut against the surfaces of the reinforcing angle steel 102 on both sides, providing support to the wall and preventing the upper panel of the opening 6 from sinking.

[0025] The reinforcement structure specifically designed for the above-mentioned on-site opening construction method of ALC wall 3 provided by this invention is used to strengthen and protect the newly added opening 6 in the existing ALC wall 3. It includes: Reinforcing angle steel 1 is continuously arranged around the opening 6 and is respectively set on the inner and outer surfaces of the ALC wall 3; Stainless steel tube reinforcing nail 4 is fixed to the inner wall of reinforcing angle steel 1, extending into the ALC wall 3 to anchor the reinforcing angle steel 1 to the ALC wall 3. In this design, the stainless steel tube reinforcing nail 4 is a hollow tubular structure with self-tapping properties, and can be directly nailed into the ALC wall 3.

[0026] The reinforcing flat steel 2 is welded between the reinforcing angle steel 1 on the inner and outer surfaces of the ALC wall 3, and is used to connect and fix the reinforcing angle steel 1 on both sides. The reinforcing flat steel 2 is arranged at intervals along the reinforcing angle steel 1, and at least two are arranged on each side around the opening 6, so that the reinforcing angle steel 1 around the opening 6 is connected under stress and forms a comprehensive support for the cross section of the opening 6.

[0027] This invention is designed as a construction method of first supporting and then drilling. The reinforcing angle steel 1 is embedded in the ALC wall 3 before drilling. The drilling is carried out in the ALC wall 3 within the area defined by the reinforcing angle steel 1, which avoids edge cracking and diagonal cracks at the corners caused by the brittleness of the ALC wall 3. The force transmission interruption caused by drilling is directly compensated by the angle steel reinforcement structure. This solves the construction threat of easy sinking of the upper strip of the opening 6 and cracking or breaking of the ALC wall 3 when dismantling the local structure of the ALC wall 3. The construction method provided by this invention causes less damage to the wall.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A method for on-site wall drilling using ALC panels, comprising the following steps: Step 1: Design the opening (6) to be made as required, draw lines on the inner and outer surfaces of the ALC wall (3), determine the size of the opening (6), and use a cutting machine to cut out the embedded seam (5) along the drawn lines on the surface of the ALC wall (3). Its features are, Step 2: Measure and cut the reinforcing angle steel (1) material according to the size of the opening (6); Step 3: Insert the reinforcing angle steel (1) into the embedded joint (5) on both the inner and outer surfaces of the ALC wall (3); Step 4: Continue to use the hole-opening tool to hollow out the area of ​​the opening (6) defined by the reinforced angle steel (1); Step 5: After the core is cleaned, use reinforcing angle steel (2) to connect and fix the reinforcing angle steel (1) on both sides of the opening (6).

2. The method for on-site wall drilling using ALC panels according to claim 1, characterized in that, The specific operation of nailing the reinforcing angle steel (1) into the ALC wall (3) is as follows: insert one side of the reinforcing angle steel (1) into the embedded joint (5), and the other side of the angle steel is attached to the surface of the ALC wall (3).

3. The method for on-site wall opening construction of ALC panels according to claim 2, characterized in that, After the reinforcing angle steel (1) is cut, several stainless steel pipe reinforcing nails (4) are welded to the inner surface of the other side corner plate. When the stainless steel pipe reinforcing nails (4) are inserted into the embedded seam (5) on one side corner plate of the reinforcing angle steel (1), they are nailed into the surface of the ALC wall (3) to anchor the reinforcing angle steel (1) to the wall.

4. The method for on-site wall drilling using ALC panels according to claim 1, characterized in that, The reinforcing angle steel (1) on the left and right sides of the opening (6) is equal to the design size of the opening (6), and the length of the reinforcing angle steel (1) on the upper and lower sides of the opening (6) is the sum of the design size of the opening (6) and the width of the reinforcing angle steel (1) on the left and right sides.

5. A special reinforcement structure for the on-site wall opening construction method of ALC panels as described in any one of claims 1-4, characterized in that, include: Reinforcing angle steel (1) is arranged end to end along the perimeter of the opening (6) and is respectively set on the inner and outer surfaces of the ALC wall (3); Stainless steel pipe reinforcing nail (4) is fixed to the inner wall of the reinforcing angle steel (1) and extends into the ALC wall (3) to anchor the reinforcing angle steel (1) to the ALC wall (3); The reinforcing angle steel (2) is welded between the reinforcing angle steel (1) on both sides of the opening (6) to connect and fix the reinforcing angle steel (1) on both sides.

6. A special reinforcement structure for the on-site wall opening construction method of ALC panels as described in claim 5, characterized in that, Reinforcing angle steel (2) is set at intervals along reinforcing angle steel (1), and at least two sets are set on each side of the opening (6).

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