A construction method for standardized square steel keel for FS formwork integrated panels for structural exterior walls

Abstract

This invention discloses a method for constructing standardized square steel keel for integrated formwork panels on structural exterior walls (FS). The method involves arranging single-square steel secondary keels vertically according to the modular dimensions of the integrated formwork panel. One single-square steel secondary keel is placed on each side of the joint of the integrated formwork panel, and horizontal single-square steel secondary keels are placed above and below these keels and welded to the vertical keels to form welds. A round steel pull ring is welded to the top of the vertical single-square steel secondary keel at the joint. In this invention, by arranging the single-square steel secondary keels according to the modular dimensions of the integrated formwork panel and welding them to form an integrated standardized unit, combined with the overall hoisting of the round steel pull ring, concrete struts supporting the joints, connectors reinforcing the panel, and the two main steel keels and tie rods locking the formwork system, the flatness and verticality of the integrated formwork panel installation can be significantly improved, completely eliminating the problem of misaligned joints. This reduces the workload of leveling and repairing the exterior wall decoration base layer from the source, and significantly reduces construction costs.

Description

Technical Field

[0001] This invention relates to the field of building exterior wall technology, and in particular to a construction method for standardized square steel keel for FS integrated formwork panels of structural exterior walls. Background Technology

[0002] With the transformation and high-quality development of the construction industry, "good houses" have become a core industry benchmark. The core requirements focus on living comfort, building safety, energy saving and low carbon emissions, and durability. FS structural formwork integrated panel technology, with its unique construction advantages and performance characteristics, has become a recommended technology for building "good houses." It has been widely used and gradually promoted in residential projects. In the construction process, the FS structural formwork integrated panel uses the insulation board as one of the side forms for concrete pouring, organically combining it with steel bars and concrete. At the same time as pouring the main structure, the construction of the external wall insulation layer is completed, so that the insulation layer and the main concrete form a solid whole.

[0003] However, the installation of integrated formwork panels mainly focuses on on-site operations, which are relatively scattered. Unlike traditional wooden formwork, they cannot be fixed with nails. Fixing can only be done by keel and tie rods, resulting in poor flatness and verticality. Misalignment is easily caused at the splicing joints, leading to a large amount of work and high costs for leveling and repairing the base layer of the exterior wall decoration later. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the existing technology mentioned above, and to propose a construction method for standardized square steel keel for FS formwork integrated panels for structural exterior walls.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for constructing standardized square steel keel for integrated formwork panels on structural exterior walls (FS) includes the following steps: using 80mm* 600mm Divide the 1200mm integrated mold protection plate into a 600mm wide module. Arrange the 40mm*40mm*3000mm single square steel secondary keel vertically in sequence with a spacing of 187mm. Set one 40mm*40mm*3000mm single square steel secondary keel on each side of the joint of the 600mm wide 80mm*600mm*1200mm integrated mold protection plate. A 40mm*40mm*3000mm single-square steel secondary keel is horizontally installed 50mm from both the top and bottom ends of the 40mm*40mm*3000mm single-square steel secondary keel, and welded to the vertical keel to form a weld. The weld height is 4mm and the length is 40mm. Weld a ￠16 round steel ring to the top of the vertical 40mm*40mm*3000mm single square steel secondary keel at the joint, with a ring height of 180mm; after the wall reinforcement is tied, install an 80mm*600mm*1200mm integrated formwork protection plate; set 25mm*25mm*250mm concrete support rods 50mm away from the joint on both sides, with a vertical spacing of 500mm; hoist the standardized square steel secondary keel and attach it to the 80mm*600mm*1200mm integrated formwork protection plate; On the 80mm*600mm*1200mm integrated mold board, there are 8 connectors arranged in a plum blossom pattern, with no less than 5 connectors per square meter. Install the inner 15mm thick wooden template and vertical 40mm*90mm*3000mm square timber with a spacing of 150mm between the timbers. Install 18mm tie rods with a spacing of 400mm*500mm; install 40mm*60mm*3000mm double steel main keel, and set 50mm*50mm*4mm shims on both sides of the 18mm tie rods and tighten them with nuts; pour concrete, and after the concrete strength reaches the design requirements, remove the standard square steel secondary keel and reuse it.

[0006] The above technical solution further includes: The 40mm*40mm*3000mm single-sided steel secondary keel is arranged in a loop with a width of 600mm, and the overall width matches the width of the structural wall.

[0007] The integrated formwork panels are arranged in a cyclical pattern to ensure that the keel is evenly and neatly arranged, improving the overall flatness and verticality of the wall, adapting to walls of different widths, and having strong versatility.

[0008] The ￠16 round steel pull ring is only installed at the top of the two vertical 40mm*40mm*3000mm single square steel secondary keels at the joint position.

[0009] The 25mm*25mm*250mm concrete support rods are only placed at the joints of the 80mm*600mm*1200mm integrated formwork panel.

[0010] The mounting hole spacing of the ￠8 connector is 80mm*600mm*1200mm, and the distance from the edge of the mold-protecting integrated plate is not less than 50mm.

[0011] The installation spacing of the 40mm*60mm*3000mm double steel main keel is 500mm.

[0012] The spacing is set reasonably, the support rigidity is sufficient, the deformation of the formwork system is effectively controlled, and the wall dimensions are accurate and the surface is flat after the concrete is poured.

[0013] Before pouring concrete, the on-site inspection of the reinforcement and formwork system must be completed, and the pouring operation can only be carried out after the inspection is passed.

[0014] After the standardized square steel secondary keel is removed, it can be directly hoisted to the next floor wall for reuse. The single square steel secondary keel is horizontally welded and fitted with round steel pull rings to form a whole standardized square steel secondary keel component that can be hoisted as a whole and reused.

[0015] The demolding operation sequence is as follows: remove the nuts, 50mm*50mm*4mm washers, ￠18 tie rods, 40mm*60mm*3000mm double-sided steel main keel, 40mm*90mm*3000mm square timber, and 40mm*40mm*3000mm single-sided steel secondary keel.

[0016] Orderly demolding avoids damage to components, protects the integrity of the standardized keel, ensures the effectiveness of reuse, and at the same time guarantees construction safety and demolding efficiency.

[0017] The present invention has the following beneficial effects: 1. In this invention, by arranging single-sided steel secondary keels according to the modularity of the integrated formwork panel and welding them to form an integral standardized unit, and cooperating with the overall hoisting of round steel pull rings, the joint support of concrete struts, the reinforcement of the panel body by connectors, and the locking of the template system by the two-sided steel main keels and tie rods, the flatness and verticality of the integrated formwork panel installation can be significantly improved, the problem of misalignment of splicing joints can be completely eliminated, the workload of leveling and repairing the base layer of the exterior wall decoration can be reduced from the source, and the construction cost can be greatly reduced.

[0018] 2. In this invention, a standardized single-unit steel secondary keel that can be reused is adopted. Combined with standardized construction procedures, it changes the traditional scattered on-site operation mode. Reliable connection can be achieved without the need for nail fixing, which simplifies the installation process, improves construction efficiency, and reduces material waste. It realizes the integration and standardized operation of external wall insulation and structural construction. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a construction method for a standardized square steel keel for an integrated formwork panel for structural exterior walls, as proposed in this invention. Figure 2 : Figure 1 Cross-sectional view; Figure 3 : Elevation view and structural schematic diagram of the installation of standardized square steel secondary keel; Figure 4 : Figure 3 Mid-side sectional view; Figure 5 : Figure 3 Middle side sectional view.

[0020] In the diagram: 1. Single-sided steel secondary keel; 2. Double-sided steel main keel; 3. Round steel pull ring; 4. Tie rod; 5. Integrated formwork panel; 6. Square timber; 7. Concrete support rod; 8. Shim; 9. Thick wooden formwork; 10. Nut; 11. Weld; 12. Concrete; 13. Connector. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-5 As shown, the present invention is a construction method for standardized square steel keel for FS integrated formwork panels for structural exterior walls. The integrated formwork panel 5 is divided into equal modules of 600mm width, and the single square steel secondary keel 1 is arranged vertically in sequence with a spacing of 187mm. A single square steel secondary keel 1 is set on both sides of the joint of the 600mm wide integrated formwork panel 5. A single steel secondary keel 1 is horizontally installed 50mm from both the top and bottom ends of the single steel secondary keel 1, and welded to the vertical keel to form a weld 11 with a weld height of 4mm and a length of 40mm. At the joint, weld a round steel ring 3 to the top of the vertical single square steel secondary keel 1, with a ring height of 180mm; after the wall reinforcement is tied, install the formwork protection integrated plate 5, set concrete support rods 7 on both sides of the joint, with a vertical spacing of 500mm, hoist the standardized square steel secondary keel and fit it with the formwork protection integrated plate 5; arrange the connectors 13 in a quincunx pattern on the formwork protection integrated plate 5, with no less than 5 per square meter, install the inner 15mm thick wooden template 9 and vertical square timber 6, with a square timber spacing of 150mm; Install tie rods 4 with a spacing of 400mm*500mm; install the two main steel keels 2, place washers 8 on both sides of the tie rods 4 and tighten them with nuts 10; pour concrete 12, and after the concrete 12 reaches the design strength, remove the standardized square steel secondary keel and reuse it.

[0023] In one embodiment, for the aforementioned single-sided steel secondary keel 1, the single-sided steel secondary keel 1 is arranged in a loop segment with a width of 600mm, and the overall width matches the width of the structural wall.

[0024] In one embodiment, the round steel pull ring 3 is only installed at the top of the two vertical single-sided steel secondary keels 1 at the joint position. The concrete support rod 7 is only arranged at the joint position of the integrated formwork plate 5.

[0025] In this embodiment, the round steel pull rings 3 are arranged only at the top of the single-sided secondary steel keel 1 at the joint. This allows the lifting force to be concentrated at the joint where the overall rigidity of the standardized keel is strongest. During the overall lifting process, this ensures uniform force distribution and stable lifting, effectively preventing bending, twisting, and local deformation of the keel system due to uneven force distribution. At the same time, it can reduce the number of round steel pull rings 3 used and the amount of welding work, simplify the processing procedures of the standardized keel, reduce material waste and labor costs, ensure accurate lifting positioning, and improve overall installation efficiency and construction safety.

[0026] In one embodiment, for the aforementioned connector 13, the distance between the mounting hole of the connector 13 and the edge of the integrated mold-keeping plate 5 is not less than 50mm. The installation spacing of the two main steel keels 2 is 500mm.

[0027] In this embodiment, the requirement that the mounting hole of the connector 13 be at least 50mm from the edge of the integrated formwork retaining plate 5 can effectively avoid quality defects such as cracking, damage, and corner chipping at the edge of the plate due to the hole being too close. This ensures that the connector 13 and the integrated formwork retaining plate 5 have sufficient connection strength and anchoring reliability, preventing loosening or falling off during use. It also ensures that the integrated formwork retaining plate 5 and the concrete 12 structure are reliably combined, improving the overall thermal insulation performance and structural durability of the exterior wall, and reducing the risk of later maintenance.

[0028] In one embodiment, for the concrete 12 mentioned above, before pouring the concrete 12, the on-site acceptance of the reinforcement and formwork system is completed, and the pouring operation can only be carried out after the acceptance is qualified.

[0029] In this embodiment, the steel reinforcement and formwork system acceptance process is carried out before the concrete 12 is poured. This process can comprehensively check for potential quality problems in the steel reinforcement binding, formwork installation, keel fixing, and connector 13 arrangement before pouring. Problems such as misalignment, loosening, and poor sealing can be rectified in a timely manner. This avoids common quality problems such as concrete 12 forming defects, insulation layer detachment, and wall leakage caused by unqualified procedures in the early stages. It ensures that the construction quality of the external wall structure and the FS integrated formwork panel 5 meets the design and specification requirements, thereby improving the overall quality and safety of the project.

[0030] In one embodiment, for the aforementioned standardized square steel secondary keel, after the standardized square steel secondary keel is dismantled, it can be directly hoisted to the next layer of wall for reuse. The single square steel secondary keel 1 is horizontally welded and fitted with round steel pull rings 3 to form a whole standardized square steel secondary keel assembly that can be hoisted as a whole and reused.

[0031] In this embodiment, the standardized square steel secondary keel can be disassembled and reused on the next floor, enabling the keel to be tooled, standardized, and reused, significantly reducing the consumption of wood and steel, lowering construction material costs and construction waste emissions. At the same time, it eliminates the need to reprocess and manufacture the keel on each floor, significantly improving the speed of exterior wall construction, shortening the construction period, ensuring the consistency of construction processes between upper and lower floors, improving the degree of construction standardization, and achieving a dual improvement in green construction and economic benefits.

[0032] In one embodiment, the demolding operation sequence is as follows: remove nut 10, washer 8, tie rod 4, double steel main keel 2, square timber 6, and single steel secondary keel 1.

[0033] The working principle of this invention, a method for constructing a standardized square steel keel for an integrated formwork panel (FS) on an exterior wall, is as follows: According to the standard module of the integrated formwork panel 5, single square steel secondary keels 1 are evenly arranged at fixed intervals, with increased density at the panel joints. These are horizontally welded to form an integral standardized keel unit, ensuring the overall rigidity and structural stability of the keel system. Round steel rings 3 are welded to the top of the vertical single square steel secondary keels 1 at the joints. The round steel rings 3 are used to complete the overall hoisting and precise positioning of the standardized keel, improving installation efficiency and positioning accuracy. After the integrated formwork panel 5 is installed, concrete support rods 7 are installed at the panel joints to effectively resist the tightening force of the tie rods 4 and the lateral pressure of the poured concrete 12, preventing panel deformation due to compression. The staggered joints ensure the quality of the wall surface formation. The quincunx pattern of connectors 13 on the surface of the integrated formwork panel 5 ensures a reliable connection between the panel and the wall structure. Together with the inner square timber 6 and the two main steel keels 2, a double-sided symmetrical support system is formed, which enhances the overall strength of the formwork system. Tie rods 4, along with washers 8 and nuts 10, are used to lock the entire formwork system, ensuring that the flatness and verticality of the wall meet the construction requirements. After the concrete 12 is poured and reaches the design strength, the thick wooden formwork 9 and keel components are removed in sequence according to the fixed procedure. The standardized square steel secondary keel 1 can be directly hoisted and reused on the next floor. While improving construction quality and efficiency, this reduces material waste, lowers construction costs, and achieves standardized integrated operation of external wall insulation and structural construction.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for the construction of a structural facade FS integrated panel formwork square steel section, characterized in that, It comprises the following steps: According to the modular equal division arrangement of the mold protection integrated plate (5), the single-side steel secondary keel (1) is arranged vertically in sequence, and one single-side steel secondary keel (1) is arranged on both sides of the joint seam of the mold protection integrated plate (5); The single-side steel secondary keel (1) is arranged horizontally above and below the single-side steel secondary keel (1) to form a weld (11) by welding with the vertical keel; The circular steel pull ring (3) is welded at the top of the vertical single-side steel secondary keel (1) at the joint seam, the mold protection integrated plate (5) is installed after the completion of the wall steel reinforcement binding, the concrete support rod (7) is arranged at the joint seam, and the shaped square steel secondary keel is hoisted and attached to the mold protection integrated plate (5); The connecting piece (13) is arranged in a plum blossom shape on the mold protection integrated plate (5), and there are not less than 5 per square meter, and the inside thick wood formwork (9) and the vertical square wood (6) are installed; The tensioning screw rod (4) is arranged, the double-square steel main keel (2) is installed, the gasket (8) is arranged on both sides of the tensioning screw rod (4) and is tightened with the nut (10), the concrete (12) is poured, and after the concrete strength reaches the design requirement, the shaped square steel secondary keel is removed and recycled.

2. The method according to claim 1, wherein the method is characterized in that, The single-side steel secondary keel (1) is arranged in a circulating section, and the overall width matches the width of the structure wall.

3. The construction method according to claim 1, characterized in that, The circular steel pull ring (3) is arranged only at the top of the two vertical single-side steel secondary keels (1) at the joint seam position.

4. The construction method according to claim 1, characterized in that, The concrete support rod (7) is arranged only at the joint seam position of the mold protection integrated plate (5).

5. The construction method according to claim 1, characterized in that, The distance between the mounting hole of the connecting piece (13) and the edge of the mold protection integrated plate (5) is not less than 50 mm.

6. The construction method according to claim 1, characterized in that, Before pouring the concrete (12), the on-site acceptance of the steel reinforcement and the formwork system is completed, and after the acceptance is qualified, the pouring operation is carried out.

7. The construction method according to claim 1, characterized in that, After the shaped square steel secondary keel is removed, it is directly hoisted to the next layer of wall for repeated recycling, and the single-side steel secondary keel 1 is formed into a whole piece by horizontal welding and adding the circular steel pull ring 3, and the shaped square steel secondary keel assembly can be hoisted and reused as a whole.

8. The construction method according to claim 1, characterized in that, The sequence of the form removal operation is to remove the nut (10), the gasket (8), the tensioning screw rod (4), the double-square steel main keel (2), the square wood (6), and the single-side steel secondary keel (1) in sequence.

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