An assembled fireproof thermal insulation wall structure

Abstract

The utility model discloses an assembled fireproof thermal insulation wall structure, including a plurality of splicing wall unit, the wall unit adopts five layer composite structure design, from outside to inside is outer decorative layer, fireproof isolation layer, structural layer, thermal insulation layer and inner protective layer in proper order. The structural layer built-in steel reinforcement framework and extend to the combination area, and the concrete layer edge sets up the connecting sink, built-in U type assembly spare and steel reinforcement framework weld fixed, realizes quick connection between units through the positioning bolt. Adopt the double -layer fire -proof system and built -in heat preservation design that fireproof isolation layer, inner protective layer constitute. The combination area adopts cast -in -situ concrete and structural layer occlusal connection, and the overallity is strong. The structure realizes the efficient combination of factory prefabrication and on -the -spot assembly, especially suitable for high -rise building and severe cold area, has remarkable economic benefits and social benefits.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated wall technology, specifically a prefabricated fireproof and heat-insulating wall structure. Background Technology

[0002] With the accelerated advancement of industrialization in the construction industry, prefabricated buildings have become an important development direction in modern construction due to their advantages such as short construction cycles, low environmental pollution, and controllable quality. In prefabricated building systems, walls, as the main enclosure structure, directly affect the building's safety, energy efficiency, and user comfort. However, existing prefabricated walls still face many technical bottlenecks in areas such as fire resistance, thermal insulation, and structural connections.

[0003] Currently, common prefabricated wall systems on the market suffer from the following technical defects: First, regarding fire resistance, the insulation layer materials of most walls are combustible, easily becoming pathways for fire spread during a fire. Although some products use non-combustible materials such as rock wool, the lack of a systematic fire-resistant design makes it difficult to meet the fire protection requirements of high-rise buildings and densely populated areas. Second, in terms of thermal insulation, traditional walls often exhibit a significant thermal bridging effect, especially at structural connections and joints, leading to substantial energy loss. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a prefabricated fireproof and heat-insulating wall structure. By optimizing the material combination, strengthening the connection structure, and improving the fireproof and heat-insulating performance, the prefabricated wall achieves efficient construction, high safety and long service life, and has significant engineering application value.

[0005] The technical solution adopted by this utility model to achieve the above objectives is: a prefabricated fireproof and heat-insulating wall structure, comprising multiple sets of wall units spliced ​​and assembled onto a building structure. Each wall unit includes an outer decorative layer, a fireproof isolation layer, a structural layer, a heat-insulating layer, and an inner protective layer arranged sequentially from the outside to the inside. The structural layer includes a concrete layer and a steel reinforcement skeleton pre-embedded in the concrete layer. The outer edges of the decorative layer, fireproof isolation layer, heat-insulating layer, and inner protective layer are set higher than the outer edge of the concrete layer and form a bonding area. The outer ends of the steel reinforcement skeleton extend into the bonding area.

[0006] The outer edge of the concrete layer is uniformly provided with connecting grooves arranged in the joint area. The structural layer also includes fittings and positioning bolts. The fittings are embedded in the concrete layer and extend into the connecting grooves. The steel reinforcement cage is fixedly connected to the fittings. Some fittings are also screwed with positioning bolts extending into the joint area. The positioning bolts can be fixedly connected to the fittings or building structures in adjacent wall units.

[0007] Based on the above technical solutions, in order to ensure that the outer decorative layer, fireproof isolation layer, thermal insulation layer and inner protective layer can be stably connected to each other and perform their respective functions to meet the fireproof and thermal insulation functions, the following technical solutions are provided.

[0008] The outer decorative layer is made of fiber cement board with a thickness of 8-15mm; the fireproof isolation layer is made of rock wool board with a thickness of 20-50mm or intumescent fireproof coating with a thickness of 3mm; the thermal insulation layer is made of rock wool board with a thickness of 80-120mm or a composite material of aerogel felt and graphite polystyrene board with a thickness of 50-80mm; and the inner protective layer is a double-layer panel composed of fireproof gypsum board with a thickness of 18mm and glass magnesium board with a thickness of 6mm.

[0009] Based on the above technical solutions, the following technical solutions are provided to ensure that the assemblies and positioning bolts in the structural layer can be effectively installed in the concrete layer.

[0010] The assembly includes a connecting wing plate, a threaded sleeve A, and a slurry baffle plate. The connecting wing plate is configured with a U-shaped structure and its end is fixedly connected to the reinforcing steel skeleton. The threaded sleeve A is fixedly connected to the outside of the connecting wing plate and extends into the connecting groove. The slurry baffle plate is fixedly connected to the connecting wing plate and the reinforcing steel skeleton and extends to the outside of the concrete layer. The positioning bolt is arranged on the inside of the slurry baffle plate and is screwed into the threaded sleeve A.

[0011] Based on the above technical solutions, the following technical solutions are provided to ensure that the positioning bolts in the wall unit can be fixedly connected to the building structure.

[0012] A threaded sleeve B is pre-embedded in the building structure, and the threaded sleeve B extends to the outer surface of the building structure and is screwed together with the positioning bolt.

[0013] Based on the above technical solutions, in order to ensure that the steel reinforcement cages set in the joint area of ​​adjacent units can be fixedly connected, so as to improve the structural stability of each wall unit after assembly construction, the following technical solutions are provided.

[0014] The steel reinforcement cages extending into the joint area in adjacent wall units are fixedly assembled by connecting rods, and the steel bars arranged in the building structure extend into the joint area at adjacent positions and are fixedly connected to the corresponding steel reinforcement cages.

[0015] The beneficial effects of this utility model are:

[0016] 1. Excellent fire resistance, providing multiple layers of fire protection. It employs a multi-layered fireproof design consisting of an outer decorative layer, a fire-resistant isolation layer, and an inner protective layer, forming multiple fire barriers:

[0017] 2. High-efficiency thermal insulation, reducing thermal bridging effect. The insulation layer uses rock wool board or aerogel felt composite graphite polystyrene board, which effectively reduces the heat transfer coefficient of the wall and meets the insulation needs of cold regions and high-rise buildings. The structural layer and insulation layer are designed separately to reduce heat transfer through the concrete structure and avoid thermal bridging problems caused by metal connectors in traditional prefabricated walls.

[0018] 3. High assembly stability ensures overall load-bearing capacity. Pre-embedded components are welded and fixed to the steel reinforcement frame, ensuring the structural strength of the wall units during hoisting and splicing. Positioning bolts and threaded sleeves (B) pre-connected to quickly position the wall units to the building frame (beams and columns), improving construction efficiency. After concrete is poured in the bonding area, an integral structure is formed, tightly integrating each wall unit with the building frame and enhancing seismic and wind pressure resistance.

[0019] 4. Highly adaptable, meeting diverse needs; different materials can be used for the fireproof isolation layer and thermal insulation layer, allowing for flexible selection based on building fire resistance rating and climate conditions. Suitable for frame-type reinforced concrete buildings, and can be widely used in residential, commercial buildings, industrial plants, and other scenarios. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention combined with a building structure;

[0021] Figure 2 This is a structural diagram of the building structure;

[0022] Figure 3 A schematic diagram of the structure after the two sets of wall units are combined;

[0023] Figure 4 This is a schematic diagram of the structure after the two sets of structural layers are combined.

[0024] Figure 5 This is a structural diagram showing the welding of components onto the steel reinforcement frame.

[0025] Figure 6 This is a structural diagram of the assembly parts and their matching positioning bolts.

[0026] In the diagram: 1 Building structure, 11 Threaded sleeve B, 12 Reinforcing bar, 2 Wall unit, 21 Exterior decorative layer, 22 Fireproof isolation layer, 23 Structural layer, 231 Concrete layer, 2311 Connecting groove, 232 Reinforcing bar skeleton, 233 Assembly parts, 2331 Connecting flange, 2332 Threaded sleeve A, 2333 Baffle plate, 234 Positioning bolt, 235 Connecting rod, 24 Insulation layer, 25 Inner protective layer, 26 Joint area, 27 Operating opening. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 A prefabricated fireproof and heat-insulating wall structure includes multiple sets of wall units 2 spliced ​​and assembled onto a building structure 1. Each wall unit 2 includes an outer decorative layer 21, a fireproof isolation layer 22, a structural layer 23, a heat insulation layer 24, and an inner protective layer 25 arranged sequentially from the outside to the inside. The structural layer 23 includes a concrete layer 231 and a steel reinforcement skeleton 232 pre-installed in the concrete layer 231. The outer edges of the decorative layer, fireproof isolation layer 22, heat insulation layer 24, and inner protective layer 25 are set higher than the outer edge of the concrete layer 231 and form a bonding area 26. The outer end of the steel reinforcement skeleton 232 extends into the bonding area 26.

[0029] The outer edge of the concrete layer 231 is uniformly provided with connecting grooves 2311 arranged in the joint area 26. The structural layer 23 also includes fittings 233 and positioning bolts 234. The fittings 233 are embedded in the concrete layer 231 and extend into the connecting grooves 2311. The steel reinforcement cage 232 is fixedly connected to the fittings 233. Some fittings 233 are also screwed with positioning bolts 234 extending into the joint area 26. The positioning bolts 234 can be fixedly connected to the fittings 233 in the adjacent wall unit 2 or the building structure 1.

[0030] The exterior decorative layer 21 is directly exposed to the outdoors, resisting weather factors such as wind, rain, and ultraviolet radiation, while also meeting the aesthetic requirements of the building. The fireproof isolation layer 22 is closely attached to the inside of the exterior decorative layer 21, serving as the first line of fire protection to prevent external fire from penetrating the insulation layer 24 or the structural layer 23. The structural layer 23 provides the overall strength and stability of the wall unit 2, and after assembly and construction, it can serve as the core layer for load transfer. Electrical wiring can also be pre-embedded in the structural layer 23 to meet the building's usage requirements.

[0031] The insulation layer 24 primarily serves to insulate and prevent heat loss from the interior or to prevent high outdoor temperatures from affecting the indoor temperature through heat conduction. Located inside the structural layer 23, it prevents the insulation material from being directly exposed to the outside, thus avoiding fire risks, and also reduces the thermal shock effect. The inner protective layer 25 faces the interior space and serves as a fireproof, soundproof, and surface decorative base layer.

[0032] The fire-resistant isolation layer 22 and the inner protective layer 25 form a double-layer fire protection. Even if an external fire breaks through the outer decorative layer 21, the fire-resistant isolation layer 22 will still block it. If a fire occurs indoors, the inner protective layer 25 can delay the spread of the fire. The insulation layer 24 is close to the indoor side, which can reduce the loss of indoor heat to the outside through the structural layer 23. This design is especially critical in cold regions.

[0033] It should also be noted that the outer decorative layer 21 can be installed last, which facilitates on-site adjustment of the seams and maintains the aesthetic appearance.

[0034] The aforementioned building structure 1 is a beam or column structure of a frame-type reinforced concrete building. After being assembled with wall units 2, it forms a complete wall structure so that the joint area 26 can form a continuous area with horizontal and vertical arrangement. Concrete is poured into it to achieve a fixed combination of each group of wall units 2 and building structure 1, thereby improving the assembly stability of wall units 2 in frame-type reinforced concrete buildings.

[0035] The adjacent wall units 2 and the building structure 1 are pre-connected by means of the fitting 233 and positioning bolts 234. The pre-connection is carried out at the joint area 26, and after the concrete is filled, they can be combined into a unified whole wall.

[0036] To ensure that the outer decorative layer 21, fireproof isolation layer 22, thermal insulation layer 24, and inner protective layer 25 can be stably connected to each other and perform their respective functions to meet the fireproof and thermal insulation requirements, the following technical solution is provided.

[0037] The outer decorative layer 21 is made of fiber cement board with a thickness of 8-15mm; the fireproof isolation layer 22 is made of rock wool board with a thickness of 20-50mm or intumescent fireproof coating with a thickness of 3mm; the thermal insulation layer 24 is made of rock wool board with a thickness of 80-120mm or a composite material of aerogel felt and graphite polystyrene board with a thickness of 50-80mm; and the inner protective layer 25 is a double-layer panel composed of fireproof gypsum board with a thickness of 18mm and glass magnesium board with a thickness of 6mm.

[0038] The outer decorative layer 21 is made of fiber cement board, which has impact resistance, weather resistance and decorative properties, and can form a double protective barrier with the fireproof isolation layer 22.

[0039] When the fireproof isolation layer 22 uses intumescent fireproof coating, it can expand and form a carbonized layer when exposed to fire. When rock wool board is used, it is a Class A non-combustible material. Both can block the spread of fire. The specific choice of material can be made according to the construction cost and the wall thickness requirements.

[0040] For insulation layer 24, the rock wool board can meet the insulation performance requirements of cold regions and the fire protection requirements of high-rise buildings. The composite material of aerogel felt and graphite polystyrene board can effectively reduce the heat transfer coefficient of the wall to achieve the insulation effect.

[0041] In the inner protective layer 25, the fire-resistant gypsum board has a fire resistance limit of more than 1 hour, while the magnesium oxide board is a Class A non-combustible material and has a moisture-proof function.

[0042] The aforementioned outer decorative layer 21, fireproof isolation layer 22, thermal insulation layer 24, and inner protective layer 25 are all fixedly combined by structural adhesive bonding and anchor bolt fixing to ensure the overall structural strength.

[0043] To ensure that the fittings 233 and positioning bolts 234 in the structural layer 23 can be effectively installed in the concrete layer 231, the following technical solution is provided.

[0044] The assembly 233 includes a connecting wing plate 2331, a threaded sleeve A2332, and a grout baffle 2333. The connecting wing plate 2331 is configured as a U-shaped structure and its end is fixedly connected to the reinforcing steel frame 232. The threaded sleeve A2332 is fixedly connected to the outside of the connecting wing plate 2331 and extends into the connecting groove 2311. The grout baffle 2333 is fixedly connected to the connecting wing plate 2331 and the reinforcing steel frame 232 and extends to the outside of the concrete layer 231. The positioning bolt 234 is arranged inside the grout baffle 2333 and is screwed to the threaded sleeve A2332.

[0045] The connecting wing plate 2331 and the grout baffle plate 2333 are both welded to the steel reinforcement frame 232 to form a unified whole. The threaded sleeve A2332 is also welded to the connecting wing plate 2331. The positioning bolt 234 can be inserted from the inside of the grout baffle plate 2333 and screwed into the threaded sleeve A2332. Then, it passes through the threaded sleeve A2332 and is screwed into the weight-reducing threaded sleeve A2332 arranged opposite to each other in the adjacent wall unit 2. This achieves a fixed pre-connection of the structural layer 23 in the adjacent wall unit 2. The protruding positioning bolt 234 can also achieve a fixed pre-connection with the building structure 1. The connection part can also serve as a frame structure, which can ensure the structural stability of the on-site poured part when the concrete is poured.

[0046] The grout baffle 2333 is also designed as a U-shaped structure, which can block the concrete layer 231 to the outside, thereby forming an assembly opening to ensure that the positioning bolt 234 can be properly installed into the assembly 233. Correspondingly, an operating opening 27 is provided on the remaining structural layers 23 outside the structural layer 23 to facilitate the assembly and tightening of the positioning bolt 234.

[0047] To ensure that the positioning bolts 234 in the wall unit 2 can be fixedly connected to the building structure 1, the following technical solution is provided.

[0048] A threaded sleeve B11 is pre-embedded in the building structure 1. The threaded sleeve B11 extends to the outer surface of the building structure 1 and is screwed together with the positioning bolt 234.

[0049] The positioning bolt 234 extending from the threaded sleeve A2332 can be screwed together with the threaded sleeve B11 in the adjacent building structure 1, thereby realizing the pre-connection between the wall unit 2 and the building structure 1. When filling the joint area 26 with concrete, the connecting groove 2311 can be filled together so that the newly filled concrete can interlock with the single unit, thereby further improving the structural stability of the wall unit 2 after assembly.

[0050] To ensure that the steel reinforcement cage 232 in the adjacent unit junction area 26 can be fixedly connected, thereby improving the structural stability of each wall unit 2 after assembly construction, the following technical solution is provided.

[0051] The steel reinforcement cages 232 extending into the joint area 26 in the adjacent wall units 2 are fixedly combined by connecting rods 235, and the steel bars 12 arranged in the building structure 1 extend into the joint area 26 in the adjacent position and are fixedly connected to the corresponding steel reinforcement cages 232.

[0052] The threaded sleeve B11 can be welded to the reinforcing bar 12 in the building structure 1 to ensure its stability during installation in the building structure 1. The reinforcing bar 12 extending to the outside can be pre-connected to the corresponding reinforcing bar skeleton 232 by welding or binding. Adjacent wall units 2 are fixedly combined with the corresponding reinforcing bar skeleton 232 by welding or binding through connecting rods, thereby forming a pre-connected skeleton structure between the building structure 1 and each wall unit 2 to ensure that a unified whole structure can be formed after the concrete is poured.

[0053] After the wall units 2 are assembled, the joints formed can be filled with the same structural material as the corresponding structural layer 23 to prevent the fire from spreading through the joints and to prevent the generation of thermal bridges.

[0054] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated fireproof and heat-insulating wall structure, characterized in that: The wall unit (2) is assembled and connected to the building structure (1). The wall unit (2) includes an outer decorative layer (21), a fireproof isolation layer (22), a structural layer (23), a thermal insulation layer (24), and an inner protective layer (25) arranged sequentially from the outside to the inside. The structural layer (23) includes a concrete layer (231) and a steel reinforcement skeleton (232) pre-installed in the concrete layer (231). The outer edges of the decorative layer, fireproof isolation layer (22), thermal insulation layer (24), and inner protective layer (25) are set higher than the outer edge of the concrete layer (231) and form a bonding area (26). The outer end of the steel reinforcement skeleton (232) extends into the bonding area (26). The outer edge of the concrete layer (231) is uniformly provided with connecting grooves (2311) arranged in the joint area (26). The structural layer (23) also includes fittings (233) and positioning bolts (234). The fittings (233) are embedded in the concrete layer (231) and extend into the connecting grooves (2311). The steel reinforcement skeleton (232) is fixedly connected to the fittings (233). Some fittings (233) are also screwed with positioning bolts (234) extending into the joint area (26). The positioning bolts (234) can be fixedly connected to the fittings (233) or building structure (1) in the adjacent wall unit (2).

2. The prefabricated fireproof and heat-insulating wall structure according to claim 1, characterized in that: The outer decorative layer (21) is made of fiber cement board with a thickness of 8-15mm, the fireproof isolation layer (22) is made of rock wool board with a thickness of 20-50mm or intumescent fireproof coating with a thickness of 3mm, the thermal insulation layer (24) is made of rock wool board with a thickness of 80-120mm or a composite material of aerogel felt and graphite polystyrene board with a thickness of 50-80mm, and the inner protective layer (25) is a double-layer panel composed of fireproof gypsum board with a thickness of 18mm and glass magnesium board with a thickness of 6mm.

3. The prefabricated fireproof and heat-insulating wall structure according to claim 1, characterized in that: The assembly (233) includes a connecting wing plate (2331), a threaded sleeve A (2332), and a slurry baffle plate (2333). The connecting wing plate (2331) is configured as a U-shaped structure and its end is fixedly connected to the steel reinforcement skeleton (232). The threaded sleeve A (2332) is fixedly connected to the outside of the connecting wing plate (2331) and extends into the connecting groove (2311). The slurry baffle plate (2333) is fixedly connected to the connecting wing plate (2331) and the steel reinforcement skeleton (232) and extends to the outside of the concrete layer (231). The positioning bolt (234) is arranged inside the slurry baffle plate (2333) and is screwed to the threaded sleeve A (2332).

4. The prefabricated fireproof and heat-insulating wall structure according to claim 3, characterized in that: A threaded sleeve B (11) is pre-embedded in the building structure (1), the threaded sleeve B (11) extends to the outer surface of the building structure (1) and is screwed together with the positioning bolt (234).

5. A prefabricated fireproof and heat-insulating wall structure according to claim 3, characterized in that: The steel reinforcement skeleton (232) extending into the joint area (26) in the adjacent wall unit (2) is fixedly combined by the connecting rod (235), and the steel reinforcement strip (12) arranged in the building structure (1) extends into the joint area (26) at the adjacent position and is fixedly connected with the corresponding steel reinforcement skeleton (232).

Images