Self-bearing integrated box type floor panel of assembly and decoration integration light steel structure

Abstract

The utility model belongs to building industrialization technical field especially, and it is a kind of assembly and decoration integration light steel structure self-supporting integrated box type floor slab, it is characterized in that, including light steel frame, the group of few Chinese characters keel that is arranged in the internal cavity of this light steel frame, the upper integrated decorative cover plate that is covered in the outside upper of light steel frame, the lower integrated decorative cover plate that is covered in the outside lower of light steel frame, the heat preservation sound insulation board or extruded sheet that is set in the lower integrated decorative cover plate, the heat preservation sound insulation board that is set in the upper integrated decorative cover plate, the steel bearing plate that is set in the upper light steel frame.The utility model forms closed box body by cold-formed steel frame and double-layer cover plate, integrates heat preservation sound insulation layer inside, realizes 100% factory prefabrication, and this floor slab adapts robot automatic production, has the advantages such as light weight, high strength, energy saving, fast installation, is applicable to prefabricated building and green low-carbon building, civil building and industrial building.

Description

Technical Field

[0001] This utility model belongs to the field of building industrialization technology, and in particular relates to an integrated box-type floor panel with prefabricated and decorated light steel structure and self-supporting structure. Background Technology

[0002] Traditional cast-in-place concrete floor slabs have long construction cycles, high energy consumption, and are difficult to integrate with insulation systems. Adding insulation later reduces floor height and increases construction complexity. While existing lightweight steel floor slabs can reduce structural weight, they still have the following problems: 1. Insufficient thermal and sound insulation performance: Traditional light steel floor slabs are prone to forming thermal and acoustic bridges, affecting building energy efficiency and comfort.

[0003] 2. Difficulty in thermal insulation integration: Existing precast floor slabs usually require on-site installation of thermal insulation, which is inefficient and difficult to control in terms of quality.

[0004] 3. Poor adaptability to intelligent manufacturing: Traditional floor slab structures are complex and difficult to automate, which restricts the efficiency of industrialized construction.

[0005] Chinese patent, patent number: 2018218186583, describes a floor slab structure for prefabricated light steel structures. The main structure is a light steel keel floor slab, integrating insulation and decorative panels, and can accommodate built-in water and electricity pipes. However, this technology uses a large number of screws and square tubular plates for fixing the light steel keel installation, resulting in a complex connection process that is difficult to automate. The frame uses a type of cold-formed profile for prefabricated buildings, with 45° reverse chamfers at both ends and pre-drilled holes to form the frame. Due to the unique sheet metal characteristics of thin-walled cold-formed profiles, a process requiring orthogonal cutting of flat plates before forming, and considering stress rebound characteristics, achieving a tight, gapless 45° chamfer is difficult. The structure lacks a hollow layer for independent pipelines, posing a significant risk of conflict between embedded pipelines and the structure. Full-fill insulation presents challenges such as difficulty in pipeline embedding and complex on-site construction. Summary of the Invention

[0006] The purpose of this utility model is to propose a modular, intelligently manufactured, assembled and decorated integrated light steel structure self-supporting integrated box-type floor panel, which realizes the integrated prefabrication of structure and insulation, and meets the needs of building industrialization.

[0007] The objective of this utility model is achieved through the following technical solution: This utility model discloses an integrated, self-supporting, modular box-type floor panel with a light steel frame and decorative finish. Its features include a light steel frame, a set of zigzag joists disposed within the internal cavity of the light steel frame, an upper integrated decorative cover covering the upper part of the light steel frame, a lower integrated decorative cover covering the lower part of the light steel frame, a thermal insulation and soundproofing board or extruded polystyrene board disposed below the upper integrated decorative cover, a thermal insulation and soundproofing board disposed above the lower integrated decorative cover, and a steel support plate disposed above the light steel frame. The light steel frame includes two parallel main frames and two parallel secondary frames, which are connected by connectors to form a rectangle. The aforementioned thermal insulation and soundproofing board includes a flanged inner lining board and an insulation board wrapped around the outside of this flanged inner lining board.

[0008] A geothermal layer is provided in the groove of the extruded polystyrene board, and an aluminum foil heat dissipation layer is provided on the upper surface of the extruded polystyrene board.

[0009] The main frame or secondary frame is respectively composed of U-shaped thin plate cold-formed profiles. This U-shaped thin plate cold-formed profile includes a U-shaped main body formed by cold bending four flanges and three web sections. The four flanges include two middle flanges and two outer flanges. The three web sections include a middle web section and two outer web sections located below the two sides of the middle web section. The two side edges of the intermediate web are respectively connected to one side edge of the two intermediate flanges, and the other side edge of each intermediate flange is connected to a side edge of an outer web. One side edge of each outer web is connected to an intermediate flange, and the other side edge is connected to an outer flange through a right-angle bend. The intermediate flange and the outer flange are both located above the outer web.

[0010] The U-shaped thin sheet cold-formed profile of the main frame has a perforated flange at the connection of both ends of the middle web and above the middle web.

[0011] The two outer flanges of the U-shaped thin sheet cold-formed profile are provided with inward 180-degree hooks.

[0012] The hollow cavity keel is fixed to the two middle flanges on both sides of the concave thin plate cold-formed profile, which are folded inward at 90 degrees.

[0013] The upper integrated decorative cover plate covers the top of the light steel frame as a floor slab finish layer, and the lower integrated decorative cover plate is fixed to the bottom of the light steel frame to form the bottom surface of the closed box.

[0014] The insulation board includes rock wool, phenolic board, aerogel, or polyurethane foam.

[0015] The internal cavity of the light steel frame is provided with integrated water and electricity pipelines, and quick interfaces are reserved at the ends of the pipelines.

[0016] Advantages of the present utility model: (1) The assembled and decorated integrated light steel structure self-bearing integrated cassette floor slab of the present utility model is highly industrialized, realizes complete factory prefabrication, has strong adaptability to intelligent manufacturing, adopts standardized module design, is suitable for automated production lines, and robots can complete processes such as cutting, welding, and assembly, greatly improving production efficiency. The product is completely produced by the automated production line, reducing on-site construction volume. The overall floor slab is prefabricated in the factory, and only hoisting and splicing are required on-site, shortening the construction period by more than 60% and reducing the dependence on labor. (2) The assembled and decorated integrated light steel structure self-bearing integrated cassette floor slab of the present utility model has a lightweight structure and high bearing capacity. It adopts cold-formed steel frames and optimizes the cross-section design. While reducing its own weight (40% lighter than concrete floor slabs), it still has excellent bending and shear resistance performance. A steel deck (corrugated steel sheet or honeycomb board) is arranged inside to enhance stiffness and improve the overall bearing capacity of the floor slab, and the span can reach more than 6m. The hanging connection of the channel-shaped parts and the hanging connection of the Great Wall steel deck realize convenient connection, cost saving, and improved assembly efficiency.

[0017] The hanging holes of the channel-shaped parts and the diamond-shaped hanging parts are jointly stamped. When the cassette plates are combined with each other, the cassette plates are connected to each other by the diamond-shaped hanging parts, and the cassette plates are combined to realize the overall force transmission in the direction perpendicular to the concave main frame by the channel-shaped parts, achieving the overall force of multiple cassette floors or cassette roofs or cassette walls after installation.

[0018] The combination of the channel-shaped parts can also bear the external forces from inside and outside the cassette plate. Thus, the external forces are transmitted to the concave main frame by hanging the hooks of the channel-shaped parts on the rectangular holes of the concave main frame. Furthermore, the concave main frame is connected to the single-hole by multiple groups of screws, transmitting the external forces to the single-hole connector. The single-hole connector is connected to the steel column and steel beam by bolts, transmitting the external forces to the beam and column.

[0019] (3) The assembled and decorated integrated light steel structure self-bearing integrated cassette floor slab of the present utility model has excellent heat insulation and sound insulation performance; Flange lining and multi-layer insulation structure: The lining plate with a flange wraps rock wool or aerogel to form a continuous insulation layer, effectively blocking the heat bridge; Sound insulation optimization: The composite structure of the steel deck, elastic cushion layer, and cover plate can reduce impact sound and airborne sound. The sound insulation amount is ≥50dB, far exceeding that of ordinary concrete floor slabs. The three-layer insulation (insulating cotton / static air layer / insulating cotton) reliably increases the sound insulation index by adding sound insulation cotton inside; (4) The assembled and decorated integrated light steel structure self-supporting integrated box floor panel of this utility model is green and low-carbon, conforms to the trend of sustainable development, reduces construction waste, has high precision in factory prefabrication, and has less material waste. Compared with cast-in-place concrete, it can reduce construction waste by 80%; steel, insulation materials, etc. can be disassembled and recycled, which meets the requirements of circular economy; modular design facilitates automobile transportation and long-distance container shipping. (5) The assembled and decorated integrated light steel structure self-supporting integrated box-type floor panel of this utility model is easy to construct and reduces the overall cost; Quick installation: It adopts bolt connection or snap-fit ​​splicing, eliminating the need for wet work, greatly shortening the construction cycle. It has self-supporting and force transmission functions (plate / frame / single hole connector / beam column). The construction is simple because the single hole connector is used to connect the beam and column with bolts, and the beam and column nodes are simple. High degree of integration: Decoration, structure and pipeline are prefabricated in one piece, reducing on-site work by more than 30%. It has its own decorative function (panel decoration) and also has a sealing and waterproof function. The cavity formed by the roof panel can be used for wiring. At the same time, the equipment can automatically open the light holes on the panel below the roof. The panel below can be used directly as a ceiling and has its own decoration, without the need for a suspended ceiling.

[0020] Easy maintenance: The pipeline system can be quickly inspected and maintained through the access panel or external system, and the water, electricity and heating functions are highly integrated; (6) The prefabricated and decorated integrated light steel structure self-supporting integrated box floor panel of this utility model, through the innovative design of light steel box structure, integrated insulation and intelligent manufacturing, realizes the building industrialization goal of "factory prefabrication, rapid installation, energy saving and comfort", and is suitable for prefabricated buildings such as houses, apartments, and hotels, with significant economic and social benefits. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model without geothermal heating.

[0022] Figure 2 This is a schematic diagram of the geothermal structure of this utility model.

[0023] Figure 3 This is a cross-sectional view of the geothermal component of this utility model.

[0024] Figure 4 This is a cross-sectional view of the main frame of this utility model.

[0025] Figure 5 This is a cross-sectional view of the secondary frame of this utility model.

[0026] Figure 6 This is a top view and cross-sectional view of the box-type floor panel and column joint of this utility model.

[0027] Figure 7This is a view of the hook node of the zigzag keel, steel bearing plate and light steel frame of the present invention. Detailed Implementation

[0028] The specific embodiments of this utility model are further described below with reference to the accompanying drawings.

[0029] like Figure 1-6 As shown, the self-supporting integrated box-type floor panel of this utility model, which is an integrated light steel structure with prefabricated decoration, is characterized by comprising a light steel frame, a set of Z-shaped keels 9 disposed in the internal cavity of the light steel frame, an upper integrated decorative cover plate 10 covering the upper part of the light steel frame, a lower integrated decorative cover plate 18 covering the lower part of the light steel frame, a thermal insulation and sound insulation board or extruded polystyrene board 20 disposed below the upper integrated decorative cover plate 10, a thermal insulation and sound insulation board disposed above the lower integrated decorative cover plate 18, and a steel support plate 19 disposed above the light steel frame. The light steel frame includes two parallel main frames 12 and two parallel secondary frames 13. The two main frames 12 and the two secondary frames 13 are connected by connectors to form a rectangle. The aforementioned thermal insulation and soundproofing board includes a flanged inner lining board 14 and an insulation board 11 wrapped around the outside of this flanged inner lining board.

[0030] A geothermal layer is provided in the groove of the extruded polystyrene board 20, and an aluminum foil heat dissipation layer is provided on the upper surface of the extruded polystyrene board 20.

[0031] The main frame 12 or the secondary frame 13 is respectively composed of U-shaped thin plate cold-formed profiles. This U-shaped thin plate cold-formed profile includes a U-shaped main body formed by cold bending four flanges and three web sections. The four flanges include two middle flanges 3 and two outer flanges 4. The three web sections include a middle web 1 and two outer web sections 2 disposed on both sides below the middle web 1. The two side edges of the intermediate web 1 are respectively connected to one side edge of the two intermediate flange plates 3, and the other side edge of each intermediate flange plate 3 is connected to one side edge of an outer web 2. One side edge of each outer web 2 is connected to an intermediate flange plate 3, and the other side edge is connected to an outer flange plate 4 through a right-angle bend 5. The intermediate flange plate 3 and the outer flange plate 4 are both located above the outer web plate 2.

[0032] The U-shaped thin plate cold-formed profile of the main frame has a perforated flange 8 at the connection of the two ends of the middle web 1 and above the middle web 1.

[0033] The two outer flanges 4 of the U-shaped thin sheet cold-formed profile are provided with inward 180-degree hooks 6.

[0034] The hollow zigzag keel 9 is fixed to the two middle flange plates 3 on both sides of the concave thin plate cold-formed profile, which are folded inward at 90 degrees.

[0035] The upper integrated decorative cover plate 10 covers the top of the light steel frame as a floor slab finish layer, and the lower integrated decorative cover plate 18 is fixed to the bottom of the light steel frame to form the bottom surface of the closed box.

[0036] The insulation board 11 includes rock wool, phenolic board, aerogel or polyurethane foam.

[0037] The light steel frame has an internal cavity for integrated water and electricity pipelines, with quick-connect interfaces reserved at the ends of the pipelines.

[0038] This utility model provides a box-type light steel composite prefabricated floor slab, the core of which lies in its modular design, facilitating intelligent manufacturing in the factory and rapid on-site assembly. The specific structure includes: 1. Light steel frame: A rectangular frame is formed by welding or bolting concave cold-formed profiles and connecting fittings, serving as the main load-bearing structure of the floor slab. The cross-sectional shape is optimized to improve bending stiffness. Single-hole connector 15 can be selected as the connector. The design of single-hole connector 15 allows for rapid installation and flooring with the square tube beams of the building's steel structure frame.

[0039] 2. Integrated decorative surface: Lower decorative cover plate 18: Fixed to the bottom of the frame to form the bottom surface of the closed box, which can be decorated with OSB board, fiber cement board or thin steel plate with wall covering or other decorative surfaces.

[0040] Upper decorative cover plate 10: Covers the top of the frame as a floor slab finish layer, which can be made of high-strength composite floor tiles or floor decoration, etc.

[0041] Decorative surfaces are not limited to color-coated steel sheets, galvanized sheets, steel strips, and aluminum sheets, but also include decorative carbon crystal sheets, decorative floor mats, OSB boards, cement boards, magnesium crystal sheets, calcium silicate boards, gypsum boards, and other surface materials.

[0042] 3. Functional layer structure: Thermal insulation and sound insulation layer: Located below the upper decorative cover plate 10 and above the lower decorative cover plate 18, it is made of rock wool, aerogel or polyurethane foam wrapped with a flanged inner lining plate 14 (such as galvanized steel plate or aluminum plate) to form a continuous thermal insulation and sound insulation barrier, reducing thermal bridge and sound bridge effects.

[0043] 4. Hollow enclosed cavity design: This provides sound and heat insulation while reducing the amount of insulation and soundproofing materials needed. For higher sound insulation requirements, soundproofing cotton boards can be pasted onto one or both sides of the inner cavity.

[0044] 5. Hollow cavity zigzag keel 9: Fixed to the two middle flange plates 3 on both sides of the U-shaped thin plate cold-formed profile, which are folded inward at 90 degrees. It is made of profiled steel plate or honeycomb plate square tube beam, etc., to provide stable support for the ground.

[0045] 6. Smart Manufacturing Adaptability Standardized production: All components (frame, cover, insulation layer) are designed according to a uniform module, which facilitates automated cutting, welding and assembly.

[0046] Robot assembly: The use of robotic arms to automatically lay the insulation layer and install the steel bearing plate 19 improves production accuracy.

[0047] Digital management: By combining BIM technology, we can achieve full-process information management of floor slabs from design and production to construction.

[0048] Preferred solution: The frame of the U-shaped thin sheet cold-formed profile is made of Q235 or higher galvanized carbon steel with a thickness of 0.7mm-3.0mm.

[0049] The box is molded with a thickness of 150 mm - 300 mm, a width of 600 mm - 1220 mm, and a length of 250 mm - 12000 mm.

[0050] The manufacturing process of integrated floor panel modules: 1. Integrated floor slab modules without geothermal heating 1. Floor decoration layer: Apply interface agent to the galvanized plate of the upper decorative cover plate 10, then apply 20mm thick adhesive plaster, floor tiles, grout, floor sockets, or directly lay flooring or floor adhesive.

[0051] 2. Packaging film: Brand-printed thin film packaging (to be removed on-site after installation).

[0052] 3. A 1.0-thick galvanized channel plate is used as the upper decorative cover plate 10.

[0053] 4. Black and white glue: The factory uses an automatic glue-applying machine to apply the glue.

[0054] 5. 50mm thick rock wool: cut into strips and laid out, with a density of over 200 kg, and the cotton fibers perpendicular to the board surface. The cotton fixing nails pass through the upper decorative cover plate 10 and connect to the 30mm Z-shaped keel, and are nailed to the steel support plate 19, with a spacing of no more than 400mm.

[0055] 6. Black and white glue: Glue is applied by an automatic glue-applying machine in the factory.

[0056] 7. 0.25mm thick flanged inner lining plate 14, with an L-shaped ten-hole piece 17 at each of the four corners, and attached with double-sided tape.

[0057] 8. Steel bearing plate 19: The thickness is set according to the stress calculation. Both ends are hooked onto the concave shoulder. The crest of the steel bearing plate 19 is level with the plane of the shoulder.

[0058] 9. Hollow Layer: Water pipes and electrical wiring are installed in the middle, with integrated connectors installed through φ40 pipe openings. The φ40 pipe holes are through-holes for wiring inside the frame.

[0059] 10. 30mm concave shoulder zigzag keel: The spacing of the 30mm zigzag keels should not exceed 1 meter. The lower plane of the keel is flush with the concave shoulder. The 30mm zigzag keel is connected to the other 30mm zigzag keel and the upper steel support plate 19 by vertical keels 16 with a C-shaped cross-section and a width of 28mm. Two diamond hook holes are pre-punched on the two convex surfaces corresponding to the hanging points of the 30mm zigzag keel.

[0060] 11. 0.25mm thick flanged inner lining plate 14. Place a 4mm thick L-shaped ten-hole piece 17 inside each inner corner of the groove plate. The material of this piece is Q355.

[0061] 12. 50mm thick rock wool: cut into strips and laid out, with a density of over 100 kg, and the cotton fibers perpendicular to the board surface. The cotton fixing nails pass through the inner lining board 14 of the flange and connect to the 30mm Z-shaped keel, with a spacing of no more than 400mm between nails on the 30mm Z-shaped keel.

[0062] 13. Black and white glue: Glue is applied by an automatic glue-applying machine in the factory.

[0063] 14. Galvanized aluminum sheet (floor decoration layer): This layer can be made of floor tiles, flooring, stone slabs, or other floor decoration materials.

[0064] 15. Packaging film: Brand-printed film packaging is used.

[0065] 16. Concave frame: The four sides are made of concave-shaped thin plate cold-formed profile. The parameters and materials of the concave frame can be selected according to the preferred scheme based on the stress model.

[0066] 17. Connectors: The connectors are made of Q355 steel. Single-hole connectors 15 can be installed at the four corner shoulders outside the thin-walled steel frame as needed. The single-hole connectors 15 are connected to the concave frame, inner groove plate, and L-shaped ten-hole connectors 17 with 10 M5 or M6 screws.

[0067] II. Integrated floor slab modules with geothermal heating 1. Floor decoration layer: The galvanized sheet of the upper decorative cover plate is coated with interface agent, 20mm thick gray glue, the floor tiles are mechanically pasted, and the grout is sealed. Depending on the design, floor socket switch holes can be reserved or the flooring can be laid directly.

[0068] 2. Packaging film: Brand-printed thin film packaging (to be removed on-site after installation).

[0069] 3. A decorative cover plate 10 is installed on the 1.0-thick galvanized channel plate, and a ground plug switch hole is reserved on the plate according to the design.

[0070] 4. Black and white glue: The factory uses an automatic glue-applying machine to apply the glue.

[0071] 5. Geothermal layer: From bottom to top, it consists of an extruded polystyrene board 20 with a geothermal pipe trench, a reflective film, geothermal pipes 21 (entering the geothermal pipe trench), and geothermal pipes 21 exiting from the geothermal pipe outlets at both ends and turning. The insulation board fixing nails pass through the galvanized channel plate and connect to the steel support plate 19, and are nailed to the steel support plate 19 at intervals not exceeding 400mm.

[0072] 6. Black and white glue: Automatic mechanical glue application.

[0073] 7. The lower 0.25mm thick flanged inner lining plate 14, and an L-shaped ten-hole piece 17 at each of the four corners of the shoulder.

[0074] 8. Steel bearing plate 19: Both ends are hooked onto the concave shoulder, and the crest of the steel bearing plate 19 is level with the plane of the shoulder.

[0075] 9. Hollow Layer: Water pipes and electrical wiring are installed in the middle, with integrated connectors installed through φ40 pipe openings. The φ40 pipe holes are through-holes for wiring inside the frame.

[0076] 10. 30mm concave shoulder zigzag keel: The spacing of the 30mm zigzag keels should not exceed 1 meter. The lower plane of the keel is flush with the concave shoulder. The 30mm zigzag keel is connected to the other 30mm zigzag keel and the upper steel support plate 19 by vertical keels 16 with a C-shaped cross-section and a width of 28mm. Two diamond hook holes are pre-punched on the two convex surfaces corresponding to the hanging points of the 30mm zigzag keel.

[0077] 11. 0.25mm thick flanged inner lining plate 14. Place a 4mm thick L-shaped ten-hole piece 17 inside each inner corner of the groove plate. The material of this piece is Q355.

[0078] 12. 50mm thick rock wool: cut into strips and laid out, with a density of over 100 kg, and the cotton fibers perpendicular to the board surface. The cotton fixing nails pass through the inner lining board 14 of the flange and connect to the 30mm Z-shaped keel, with a spacing of no more than 400mm between nails on the 30mm Z-shaped keel.

[0079] 13. Black and white glue: Glue is applied by an automatic glue-applying machine in the factory.

[0080] 14. Galvanized aluminum sheet (floor decoration layer): This layer can be made of floor tiles, flooring, stone slabs, or other floor decoration materials.

[0081] 15. Packaging film: Brand-printed film packaging is used.

[0082] 16. Concave frame: The four sides are made of concave-shaped thin plate cold-formed profile. The parameters and materials of the concave frame can be selected according to the preferred scheme based on the stress model.

[0083] 17. Connectors: The connectors are made of Q355 steel. Single-hole connectors 15 can be installed at the four corner shoulders outside the thin-walled steel frame as needed. The single-hole connectors 15 are connected to the concave frame, inner groove plate, and L-shaped ten-hole connectors 17 with 10 M5 or M6 screws.

[0084] Floor slab construction and combined applications: Diamond hook holes 7 can be provided on two adjacent frame sides. When splicing floor panels, the diamond hook holes 7 on the two adjacent frame sides are aligned with the hooks and inserted into the holes. Then, the floor panels are moved horizontally, and the hooks and holes form a tight hook structure, so that the adjacent frame sides of the two box-type floor panels fit tightly together to share the load. There will be no misalignment or loose gaps between the two box-type floor panels at the joint.

[0085] The box-type floor slab connects to the pre-drilled holes (or connecting plates or tapping holes) on the load-bearing structural columns or steel beams of the building through the single-hole connector 15 connected at the four corners of the concave frame, enabling rapid bolt installation. The installation is simple and the floor slab structure is safe and reliable after installation.

[0086] Prefabricated geothermal pipes 21 between floor slabs with geothermal heating can be connected using dedicated geothermal pipe sliding fittings.

Claims

1. A self-supporting integrated box-type floor panel with prefabricated and decorative light steel structure, characterized in that, The system includes a light steel frame, a set of Z-shaped joists disposed within the internal cavity of the light steel frame, an upper integrated decorative cover covering the upper exterior of the light steel frame, a lower integrated decorative cover covering the lower exterior of the light steel frame, a thermal insulation and soundproofing board or extruded polystyrene board disposed below the upper integrated decorative cover, a thermal insulation and soundproofing board disposed above the lower integrated decorative cover, and a steel support plate disposed above the light steel frame. The light steel frame includes two parallel main frames and two parallel secondary frames, which are connected by connectors to form a rectangle. The aforementioned thermal insulation and soundproofing board includes a flanged inner lining board and an insulation board wrapped around the outside of this flanged inner lining board.

2. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 1, characterized in that, A geothermal layer is provided in the groove of the extruded polystyrene board, and an aluminum foil heat dissipation layer is provided on the upper surface of the extruded polystyrene board.

3. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 1, characterized in that, The main frame or secondary frame is respectively composed of U-shaped thin plate cold-formed profiles. This U-shaped thin plate cold-formed profile includes a U-shaped main body formed by cold bending four flanges and three web sections. The four flanges include two middle flanges and two outer flanges. The three web sections include a middle web section and two outer web sections located below the two sides of the middle web section. The two side edges of the intermediate web are respectively connected to one side edge of the two intermediate flanges, and the other side edge of each intermediate flange is connected to a side edge of an outer web. One side edge of each outer web is connected to an intermediate flange, and the other side edge is connected to an outer flange through a right-angle bend. The intermediate flange and the outer flange are both located above the outer web.

4. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 3, characterized in that, The U-shaped thin sheet cold-formed profile of the main frame has a perforated flange at the connection of both ends of the middle web and above the middle web.

5. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 3, characterized in that, The two outer flanges of the U-shaped thin sheet cold-formed profile are provided with inward 180-degree hooks.

6. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 3, characterized in that, The hollow cavity keel is fixed to the two middle flanges on both sides of the concave thin plate cold-formed profile, which are folded inward at 90 degrees.

7. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 1, characterized in that, The upper integrated decorative cover plate covers the top of the light steel frame as a floor slab finish layer, and the lower integrated decorative cover plate is fixed to the bottom of the light steel frame to form the bottom surface of the closed box.

8. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 1, characterized in that, The insulation board includes rock wool, phenolic board, aerogel, or polyurethane foam.

9. The prefabricated and decorative integrated light steel structure self-supporting integrated box-type floor panel according to claim 1, characterized in that, The light steel frame has an internal cavity for integrated water and electricity pipelines, with quick-connect interfaces reserved at the ends of the pipelines.

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