Sandwich concrete wall polystyrene board supporting method

Abstract

A polystyrene board supporting method for a sandwich concrete wall is characterized by comprising the following steps of a, binding shear wall longitudinal and transverse steel bars, b, placing polystyrene boards, c, fixing square pipes, d, fixing fastening steel bars, e, fixing protective layer cushion blocks, f, sealing the shear wall steel bars and g, pouring shear wall concrete. According to the supporting method for the polystyrene board of the sandwich concrete wall, the polystyrene board is positioned, supported and controlled by oppositely penetrating the square pipes, fixing the reinforcing steel bars and internally plugging the cushion blocks, the reinforcing steel bars of the shear wall are fixed, and a reinforcing steel bar protection layer is arranged at a time, so that the construction difficulty is fundamentally reduced, the construction efficiency is improved, and the new process of the polystyrene board supporting method is fully displayed; the device is simple, convenient, durable, environment-friendly and high in efficiency, and greatly reduces the cost investment.

Description

Technical Field

[0001] The invention relates to a method for setting a concrete formwork, in particular to a method for supporting polystyrene boards for sandwich concrete walls. Background Art

[0002] With the development of my country's construction industry, the construction efficiency and product quality of residential buildings have become the direction of competition for many companies, especially the molding effect of the building structure facade and the quality assurance of the facade.

[0003] The exterior walls of buildings are usually designed as frame columns, shear walls and masonry brick walls. The frame columns and shear walls of the concrete structure are cast first, and then the masonry in the frame is built. However, after the structural construction is completed, cracks and leakage are very likely to occur at the junction of different materials in the brick-concrete structure. Moreover, with the widespread promotion of aluminum film and climbing frame technology, the exterior wall masonry part cannot be constructed synchronously with the main structure, the process is cumbersome and the pollution is serious, which has a great impact on the cost and construction period.

[0004] Therefore, in the prior art, replacing the original masonry wall with a cast-in-place polystyrene board sandwich concrete wall has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a safe and reliable method for supporting polystyrene panels in sandwich concrete walls.

[0006] To achieve the above purpose, the technical solution of the present invention is: A method for supporting polystyrene boards for sandwich concrete walls. The polystyrene board supporting system for sandwich concrete walls includes a reinforcement formwork, longitudinal and transverse steel bars for shear walls, a pad, fastening steel bars, a square tube, a steel bar hook, and a polystyrene board. The method is characterized by comprising the following steps: a. Tie up the longitudinal and transverse reinforcements of the shear wall, and set up several overlapping longitudinal and transverse reinforcements of the shear wall on one side of the reinforcement formwork; b. Place the polystyrene board and clamp it between the vertical and horizontal steel bars of two adjacent shear walls by setting a number of steel bar hooks. The steel bar hooks are horizontally hooked between the vertical and horizontal steel bars of the two shear walls; c. Fix the square tube. Grooves are set at both ends of the square tube. According to the thickness of the polystyrene board, fastening steel bar holes are set near the grooves at both ends of the square tube. The square tube is passed through the polystyrene board. The fastening steel bar is inserted into the fastening steel bar holes close to the polystyrene board to limit and fix the polystyrene board. The groove is set as a wall steel bar embedded groove to ensure the reliable embedding of the wall longitudinal reinforcement, and the convex steel bar protective layer pad can also be embedded for internal plug fixation. d. Fix and tighten the steel bars; e. Fix the protective layer pad; f. Closed shear wall reinforcement; g. Pour shear wall concrete.

[0007] The sandwich concrete wall polystyrene board supporting method of the present invention can also be further implemented by adopting the following technical measures.

[0008] The aforementioned method, wherein the sandwich concrete wall has a thickness of 200 mm.

[0009] The aforementioned method, wherein the polystyrene board has a thickness of 80 mm.

[0010] In the aforementioned method, the length of the square tube is 160 mm.

[0011] In the aforementioned method, the exposed thickness of the pad in the steel bar protective layer is 20 mm.

[0012] In the aforementioned method, the groove has a depth of 25 mm and a width of 10 mm.

[0013] After adopting the above technical solution, the sandwich concrete wall polystyrene board supporting method of the present invention has the following advantages: 1. Through the square tube, fixed steel bars, and internal pads, the polystyrene board is positioned, supported, and controlled, and the shear wall steel bars are fixed and the steel bar protective layer is set at one time, which fundamentally reduces the construction difficulty and improves the construction efficiency; 2. The new technology of polystyrene board support method is fully demonstrated, which is simple, durable, environmentally friendly and efficient, greatly reducing the cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional schematic diagram of a polystyrene board support system for a sandwich concrete wall according to an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of the P part; Figure 3 for Figure 1 A magnified view of the Q part in the figure; Figure 4 Schematic diagram of the polystyrene board support structure of a sandwich concrete wall according to an embodiment of the present invention.

[0015] In the figure: 1 polystyrene board, 2 steel bar hook, 3 reinforcement formwork, 4 shear wall longitudinal and transverse steel bars, 5 spacers, 6 fastening steel bars, 7 square tubes, 8 fastening steel bar holes, 9 grooves. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments and accompanying drawings.

[0017] Example 1 The sandwich concrete wall polystyrene board supporting method of the present invention is suitable for the design structure of sandwiching polystyrene boards in the middle of shear walls in construction projects. The polystyrene boards are positioned, supported and controlled by passing through square tubes, fixing steel bars and inserting pads. The shear wall steel bars are fixed and the steel bar protective layer is set at one time, which fundamentally reduces the construction difficulty and improves the construction efficiency. It not only fixes the sandwich concrete wall polystyrene boards in place, but also fully demonstrates the new process, which is simple, durable, environmentally friendly and efficient, and greatly reduces the cost investment.

[0018] The sandwich concrete wall polystyrene board supporting method of the present invention, when installing the sandwich polystyrene board in the shear wall, in order to prevent the polystyrene board from being fixed, squeezed, deformed, and displaced, and exposed outside the wall surface, a through square tube is used to penetrate the polystyrene board, and the fixed steel bars are inserted into the pre-punched holes of the through square tube to fix it, ensuring that the polystyrene board does not move forward and backward. Two mutually overlapping shear wall longitudinal and transverse steel bars are arranged on the side of the reinforcement template 1. After the polystyrene board is placed, a plurality of steel bar hooks 2 are arranged to sandwich the polystyrene board between the two adjacent shear wall longitudinal and transverse steel bars, and the steel bar hooks are horizontally hooked between the two shear wall longitudinal and transverse steel bars. Embedded grooves for the shear wall longitudinal steel bars are arranged at both ends of the through square tube. When the through square tube is installed, the shear wall longitudinal steel bars are embedded in the grooves at both ends, which not only meets the internal control spacing between the shear wall steel bars, but also ensures the spacing requirements between the polystyrene board and the wall steel bars.

[0019] Please refer to Figure 1-4 The sandwich concrete wall polystyrene board supporting method of the present invention comprises the following technical measures: 1. Set a wall reinforcement embedded groove 9 at the end of the square tube 7 to ensure that the wall longitudinal reinforcement is embedded in the bottom of the groove 9. The groove mouth is embedded with a convex steel bar protective layer pad to fix it. The fixed steel bar insertion hole on the through square tube is only set on one side of the square tube. The opposite side of the through square tube on the same polystyrene board 1 is used to limit the fixed steel bars that deviate from the polystyrene board. The insertion depth of the fixed steel bar is not less than 2 / 3 of the width of the through square tube to prevent the fixed steel bar from vibrating and falling.

[0020] 2. The thickness of the sandwich concrete wall is 200mm, of which the thickness of the polystyrene board in the sandwich concrete wall is 80mm, the length of the through square tube is 160mm, and the exposed thickness of the steel bar protective layer pad is 20mm.

[0021] 3. The vertical and horizontal reinforcements of the wall are Φ8mm, with a spacing of 300*300mm. The specifications of the through square tubes are 20*20*2mm. The end reinforcement grooves are 25mm deep and 10mm wide.

[0022] 4. Two Φ10mm fastening steel bar holes 8 are provided on the two side edges of the polystyrene board on the through square tube for inserting fastening steel bars 6, and the fastening steel bars are Φ8mm.

[0023] 5. The inner plug gasket 5 is convex, with the size of the large end being 30*20mm, the thickness being 20mm, and the small end being 18*18mm, to ensure that it can be normally embedded in the through-going square tube.

[0024] The sandwich concrete wall polystyrene board supporting method of the present invention needs to implement the following fixing requirements: 1. Requirements for fixing square tubes The through-square tube passes through the middle of the sandwich polystyrene board, and both ends are fixed on the longitudinal reinforcement of the wall. Therefore, the position of the through-square tube should be aligned with the longitudinal reinforcement, and the square tube is clamped and fixed by the wall reinforcement. The through-square tube also plays an up and down supporting role for the polystyrene board, limiting the up and down and left and right sliding of the polystyrene board.

[0025] Embedded grooves are set at both ends of the through square tube to allow the through square tube to act on the longitudinal reinforcement of the wall to prevent it from shifting or shaking. At the same time, the steel bars on both sides of the wall are supported to control the spacing between the steel bars. The grooves also fix the steel bar protective layer pads. The small end of the convex pad is embedded in the through square tube to ensure reliable internal plugging. The thickness of the steel bar protective layer can be ensured when the formwork is sealed later.

[0026] 2. Installation requirements for fixed steel bars The holes for fixing the steel bars on the through-square tubes should face the adjacent through-square tubes on the same polystyrene board. The spacing between the holes should be the same as the thickness of the sandwich polystyrene board. After the fixing steel bars are inserted into the holes, the steel bars should be close to the polystyrene board. The polystyrene board should be limited front and back to prevent it from being deviated and exposed outside the concrete surface.

[0027] The present invention has substantial characteristics and significant technical progress. The polystyrene board supporting method for sandwich concrete wall of the present invention optimizes the design of the exterior wall structure, adopts cast-in-place polystyrene board sandwich concrete wall technology to replace part of the original masonry structure wall, is a wall integrated with concrete and polystyrene board, with extruded board in the middle and concrete on both sides, and is constructed, cast and formed synchronously with other concrete shear walls, so as to better ensure the earthquake resistance, heat preservation, waterproof and fireproof effects of the exterior wall, reduce working procedures, shorten construction period, simplify construction, low construction cost, good engineering quality and high building quality, and has broad prospects for promotion and application.

[0028] The sandwich concrete wall polystyrene board supporting method of the present invention has been applied in the Xiejiaji shed project in Huainan City, and has obvious effects, which has been fully affirmed by the construction unit and the supervision unit.

[0029] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A method for supporting polystyrene boards for sandwich concrete walls, wherein the polystyrene board supporting system for sandwich concrete walls comprises a reinforcement formwork, longitudinal and transverse steel bars for shear walls, a pad, a fastening steel bar, a square tube, a steel bar hook, and a polystyrene board, wherein the method comprises: The following steps are involved: a. Tie up the longitudinal and transverse reinforcements of the shear wall, and arrange a plurality of longitudinal and transverse reinforcements of the shear wall (4) overlapping each other on one side of the reinforcement formwork (3); b. Place the polystyrene board, and sandwich the polystyrene board (1) between the longitudinal and transverse steel bars (4) of two adjacent shear walls by setting a plurality of steel bar hooks (2), and the steel bar hooks are horizontally hooked between the longitudinal and transverse steel bars (4) of the two shear walls; c. Fix the square tube, and provide grooves (9) at both ends of the square tube (7), and provide fastening steel bar holes (8) near the grooves at both ends of the square tube according to the thickness of the polystyrene board (1). The square tube is passed through the polystyrene board, and the fastening steel bars (6) are inserted into the fastening steel bar holes close to the polystyrene board to limit and fix the polystyrene board; the grooves (9) are provided as wall steel bar embedded grooves to ensure reliable embedding of the wall longitudinal bars, and the convex steel bar protective layer pads (5) can also be embedded for internal plug fixation; d. Fix and tighten the steel bars; e. Fix the protective layer pad; f. Closed shear wall reinforcement; g. Pour shear wall concrete.

2. The method for supporting polystyrene boards for sandwich concrete walls according to claim 1, characterized in that: The thickness of the sandwich concrete wall is 200 mm.

3. The method for supporting polystyrene boards for sandwich concrete walls according to claim 1, characterized in that: The thickness of the polystyrene board is 80 mm.

4. The method for supporting polystyrene boards for sandwich concrete walls according to claim 1, characterized in that: The length of the square tube is 160 mm.

5. The method for supporting polystyrene boards for sandwich concrete walls according to claim 1, characterized in that: The exposed thickness of the pad in the steel bar protective layer is 20 mm.

6. The method for supporting polystyrene boards for sandwich concrete walls as claimed in claim 1, characterized in that: The groove has a depth of 25 mm and a width of 10 mm.

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