Sandwich thermal insulation laminated wallboard

Abstract

The utility model provides a sandwich heat preservation laminated wallboard which comprises an outer preset wallboard, an inner preset wallboard, a heat preservation layer, an inner wallboard and outer wallboard connecting piece GFPR, a cavity cast-in-place layer reinforcement cage, an outer preset wallboard reinforcement cage and an inner preset wallboard reinforcement cage. The outer preset wallboard reinforcement cage is located in the outer preset wallboard, the inner preset wallboard reinforcement cage is located in the inner preset wallboard, the outer preset wallboard and the inner preset wallboard are connected through the inner and outer wallboard connecting piece GFRP, and the cavity cast-in-place reinforcement cage is fixed to the inner side of the heat preservation layer. According to the utility model, the wallboard structure is optimized, so that the problems of cracking and falling off of the outer thermal insulation layer can be avoided, and meanwhile, the problems of cold and hot bridge phenomena of a common sandwich wallboard and pulling out of a common thermal insulation connecting piece GFRP can also be avoided.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a sandwich insulated composite wall panel. Background Technology

[0002] With the continuous improvement of global building energy efficiency standards, external wall insulation systems have become a core component of energy-efficient building envelope design. However, traditional external wall insulation technologies, such as EPS / XPS thin-plaster systems and rock wool board cladding, have the following technical shortcomings:

[0003] 1) The insulation layer is connected to the base wall by bonding or mechanical anchoring nails. Under the action of temperature stress, wind load and freeze-thaw cycle, it is very easy to cause problems such as hollowing, cracking or even complete detachment, which poses a high safety hazard.

[0004] 2) Organic insulation materials are prone to aging, while inorganic materials are prone to moisture absorption, leading to performance degradation. Their actual service life is generally less than 25 years, which is seriously mismatched with the design life of more than 50 years for the main building structure, resulting in insufficient durability.

[0005] Currently, traditional building exterior wall insulation systems have long faced problems such as easy detachment of insulation layers, insufficient durability, and unstable construction quality. While existing sandwich insulation shear wall systems improve safety, they suffer from significant thermal bridging effects, heavy structural weight, and low construction efficiency. Conventional composite shear walls lack integrated insulation functions, making it difficult to meet the technical requirements of prefabricated buildings for integrated structure and insulation, high safety, long lifespan, and efficient construction. There is an urgent need to develop a new type of exterior wall cladding system that can completely eliminate the risk of detachment, optimize thermal performance, and is compatible with industrialized construction. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a sandwich insulated composite wall panel that solves the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a sandwich insulated composite wall panel, comprising an outer pre-installed wall panel, an inner pre-installed wall panel, an insulation layer, a GFRP connector between the inner and outer wall panels, a hollow cast-in-place reinforcement cage, an outer pre-installed wall panel reinforcement cage, and an inner pre-installed wall panel reinforcement cage. The insulation layer is fixed to the inner side of the outer pre-installed wall panel, the outer pre-installed wall panel reinforcement cage is located within the outer pre-installed wall panel, the inner pre-installed wall panel reinforcement cage is located within the inner pre-installed wall panel, the outer pre-installed wall panel and the inner pre-installed wall panel are connected by the GFRP connector, and the hollow cast-in-place reinforcement cage is fixed to the inner side of the insulation layer.

[0010] Preferably, the outer pre-installed wall panel reinforcement cage and the inner pre-installed wall panel reinforcement cage are respectively provided with an outer pre-installed wall GFRP plate and an inner pre-installed wall GFRP plate. Both the outer pre-installed wall GFRP plate and the inner pre-installed wall GFRP plate are provided with regularly arranged openings. The two ends of the inner and outer pre-installed wall panel connector GFRP pass through the openings of the outer pre-installed wall GFRP plate and the inner pre-installed wall GFRP plate and are connected with nuts.

[0011] Preferably, the reinforcing bars of the outer pre-installed wall panel reinforcement cage and the inner pre-installed wall panel reinforcement cage at the corresponding positions of the inner and outer pre-installed wall panel connector GFPR are replaced with outer pre-installed wall GFRP plates and inner pre-installed wall GFRP plates, respectively. The two ends of the inner and outer pre-installed wall panel connector GFPR pass through the openings of the outer pre-installed wall GFRP plates and the inner pre-installed wall GFRP plates and are connected with nuts.

[0012] Preferably, the insulation layer is selected from polyurethane board, aerogel board, rock wool board, XPS insulation board or EPS insulation board.

[0013] Preferably, the thickness of both the outer and inner pre-installed wall panels is 50-60 mm.

[0014] Beneficial effects

[0015] This utility model provides a sandwich-insulated composite wall panel. It has the following beneficial effects:

[0016] 1. This solution provides a sandwich insulation composite wall panel, in which the insulation layer is placed between the inner and outer pre-installed wall panels, avoiding the effects of rain and sunlight, effectively preventing problems such as cracking and falling off of the insulation layer, and improving safety.

[0017] 2. The sandwich insulated composite wall panel provided in this solution uses GFRP connectors to connect the inner and outer pre-installed wall panels, which can avoid the thermal bridging phenomenon caused by using steel bars to connect the inner and outer pre-installed wall panels in ordinary sandwich insulated wall panels.

[0018] 3. The sandwich insulated composite wall panel provided in this solution uses perforated GFRP boards to replace some of the reinforcing bars, which facilitates the fixing of the GFRP connectors of the inner and outer wall panels to the GFRP boards of the inner and outer pre-installed wall panels with nuts. This avoids the phenomenon of being pulled out due to insufficient anchoring force of GFRP and reduces the risk of the outer pre-installed wall panel falling off due to insufficient anchoring force of GFRP.

[0019] 4. The sandwich insulated composite wall panel provided in this solution can use low thermal conductivity insulation materials, which meets the requirements of ultra-low energy consumption buildings for low energy consumption of external wall panels. It has great significance for promoting the application of ultra-low energy consumption buildings and near-zero energy consumption buildings in southern regions. Attached Figure Description

[0020] Figure 1 A side view of a sandwich insulated composite wall panel provided by this utility model;

[0021] Figure 2 A schematic diagram of the main structural design of the steel cage for a sandwich insulated composite wall panel provided by this utility model;

[0022] Figure 3 This is a side view of the steel cage structure of a sandwich insulated composite wall panel provided by this utility model.

[0023] In the diagram: 1. Outer precast wall panel; 2. Inner precast wall panel; 3. Insulation layer; 4. GFRP connector for inner and outer wall panels; 5. Reinforcing cage for the cavity cast-in-place layer; 6. Reinforcing cage for the outer precast wall panel; 7. Reinforcing cage for the inner precast wall panel; 8. GFRP board for the outer precast wall panel; 9. GFRP board for the inner precast wall panel; 10. Nut. Detailed Implementation

[0024] This utility model embodiment provides a sandwich insulated composite wall panel, such as Figure 1-3 As shown, the structure includes an outer precast wall panel 1, an inner precast wall panel 2, an insulation layer 3, an inner and outer wall panel connector GFRP 4, a cavity cast-in-place reinforcement cage 5, an outer precast wall panel reinforcement cage 6, and an inner precast wall panel reinforcement cage 7. The insulation layer 3 is fixed to the inner side of the outer precast wall panel 1. The outer precast wall panel reinforcement cage 6 is located inside the outer precast wall panel 1, and the inner precast wall panel reinforcement cage 7 is located inside the inner precast wall panel 2. Specifically, the outer precast wall panel reinforcement cage 6 and the inner precast wall panel reinforcement cage 7 are pre-embedded in the outer precast wall panel 1 and the inner precast wall panel 2, respectively. The outer precast wall panel reinforcement cage 6 and the inner precast wall panel reinforcement cage 7 are respectively provided with an outer precast wall GFRP plate 8 and an inner precast wall GFRP plate 9, including two cases. The first case is that the outer precast wall GFRP plate is directly installed in the inner precast wall panel 2. RP plate 8 and inner precast wall GFRP plate 9 are respectively fixed to the outer precast wall panel reinforcement cage 6 and inner precast wall panel reinforcement cage 7; in the second case, the outer precast wall GFRP plate 8 and inner precast wall GFRP plate 9 replace the corresponding reinforcement bars on the outer precast wall panel reinforcement cage 6 and inner precast wall panel reinforcement cage 7 respectively. Since the outer precast wall GFRP plate 8 and inner precast wall GFRP plate 9 have regularly arranged openings, the two ends of the inner and outer wall panel connector GFRP4 pass through the openings of the outer precast wall GFRP plate 8 and inner precast wall GFRP plate 9 respectively and are connected to the nut 10, thereby realizing the connection between the outer precast wall panel 1 and the inner precast wall panel 2 through the inner and outer wall panel connector GFRP4, and the cavity cast-in-place reinforcement cage 5 is fixed to the inside of the insulation layer 3.

[0025] In a specific embodiment, the insulation layer 3 is selected from polyurethane board, aerogel board, rock wool board, XPS insulation board or EPS insulation board. Based on the different insulation requirements in different regions, different insulation materials can be selected.

[0026] In a specific embodiment, the thickness of the outer pre-installed wall panel 1 and the inner pre-installed wall panel 2 is 50-60mm.

[0027] In this embodiment, the number of inner and outer page wall panel connectors GFPR4 corresponds to the number of openings on the outer page pre-installed wall GFRP plate 8 and the inner page pre-installed wall GFRP plate 9, and the width of the inner and outer page wall panel connectors GFPR4 can also be adjusted according to the actual construction conditions.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sandwich insulated composite wall panel, characterized in that: The system includes an outer pre-installed wall panel (1), an inner pre-installed wall panel (2), an insulation layer (3), an inner and outer pre-installed wall panel connector GFRP (4), a cavity cast-in-place reinforcement cage (5), an outer pre-installed wall panel reinforcement cage (6), and an inner pre-installed wall panel reinforcement cage (7). The insulation layer (3) is fixed inside the outer pre-installed wall panel (1). The outer pre-installed wall panel reinforcement cage (6) is located inside the outer pre-installed wall panel (1), and the inner pre-installed wall panel reinforcement cage (7) is located inside the inner pre-installed wall panel (2). The outer pre-installed wall panel (1) and the inner pre-installed wall panel (2) are connected by the inner and outer pre-installed wall panel connector GFRP (4). The cavity cast-in-place reinforcement cage (5) is fixed inside the insulation layer (3).

2. The sandwich insulated composite wall panel according to claim 1, characterized in that: The outer precast wall panel reinforcement cage (6) and the inner precast wall panel reinforcement cage (7) are respectively provided with an outer precast wall GFRP plate (8) and an inner precast wall GFRP plate (9). The outer precast wall GFRP plate (8) and the inner precast wall GFRP plate (9) are provided with regularly arranged openings. The two ends of the inner and outer wall panel connector GFPR (4) pass through the openings of the outer precast wall GFRP plate (8) and the inner precast wall GFRP plate (9) and are connected to the nuts (10).

3. The sandwich insulated composite wall panel according to claim 2, characterized in that: The reinforcing bars of the outer pre-installed wall panel reinforcement cage (6) and the inner pre-installed wall panel reinforcement cage (7) at the corresponding positions of the inner and outer pre-installed wall panel connector GFPR (4) are replaced with the outer pre-installed wall GFRP plate (8) and the inner pre-installed wall GFRP plate (9). The two ends of the inner and outer pre-installed wall panel connector GFPR (4) pass through the openings of the outer pre-installed wall GFRP plate (8) and the inner pre-installed wall GFRP plate (9) respectively and are connected to the nuts (10).

4. The sandwich insulated composite wall panel according to claim 1, characterized in that: The insulation layer (3) is selected from polyurethane board, aerogel board, rock wool board, XPS insulation board or EPS insulation board.

5. A sandwich insulated composite wall panel according to claim 1, characterized in that: The thickness of the outer pre-installed wall panel (1) and the inner pre-installed wall panel (2) is 50-60 mm.

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