A new type of composite steel bar truss heat preservation and decoration structure outer wall hanging plate

Abstract

The present application belongs to the technical field of building outer peripheral component, and particularly relates to a new type of outer wall hanging plate of composite steel bar truss heat preservation and decoration structure. The hanging plate comprises a prefabricated steel bar truss cement plate, a heat preservation cementing layer and an inner side plate, and is connected and fixed through a broken bridge frame keel to form an integral structure. The broken bridge frame keel comprises two fixed and connected broken bridge structures, and a heat insulation strip is arranged between the broken bridge structures. The broken bridge frame keel is made of galvanized steel plate roll forming or broken bridge aluminum alloy, and has excellent heat insulation performance. The heat preservation cementing layer is made of modified polyurethane PIR material, and the heat preservation effect of the hanging plate is improved. In addition, the hanging plate is also provided with lifting pieces and pre-buried hanging piece seats and other accessories, which facilitates construction and installation. Compared with the traditional outer wall hanging plate, the hanging plate has higher decoration and heat preservation effects, can greatly improve the construction efficiency, and effectively reduces the cold bridge effect.

Description

Technical Field

[0001] This invention belongs to the technical field of building exterior components, specifically relating to a novel exterior wall panel with a composite steel truss insulation and decorative structure. Background Technology

[0002] From an architectural perspective, exterior wall cladding is a type of exterior wall cladding structure and its installation method. It involves suspending panels between two floor slabs using dry-hanging or other construction methods to achieve an integrated decorative or insulating exterior cladding structure. From a product perspective, exterior wall cladding is a type of building material, specifically building panels used for exterior walls. Common exterior wall cladding materials include fiber cement board, aluminum composite panel, PVC board, and stone. Polyurethane exterior wall insulation is a technological product with excellent seismic resistance and thermal insulation properties.

[0003] Currently, an existing invention, CN109610763B, describes a composite wall structure for building exteriors and its construction method. This structure includes a cement board as the outer surface of the wall and an inner panel as the inner surface. The cement board is fixed to a keel via hooks, and the inner panel is fixed to a column. An insulation layer is filled between the cement board and the inner panel. The keel and column are located within the insulation layer, and the spacing between the cement board and the keel is adjustable. This invention facilitates construction.

[0004] However, there is also a problem: the cement board and the insulation layer are only connected by the thermal break frame keel, which is prone to falling off after long-term use, causing casualties. Summary of the Invention

[0005] This solution provides a novel exterior wall panel with a composite steel truss insulation and decorative structure, which addresses the problem of loosening at the connection between the cement board and the insulation layer.

[0006] This solution provides a novel exterior wall panel with a composite steel truss insulation and decorative structure, comprising:

[0007] Precast reinforced concrete truss slab;

[0008] Thermal insulation cementitious layer;

[0009] Inner side panel;

[0010] The precast steel truss cement board, thermal insulation cement layer and inner side plate are fixedly connected from the outside to the inside.

[0011] Thermal break frame keel: One end of the thermal break frame keel is fixedly connected to the precast steel truss cement slab, and the other end is fixedly connected to the inner side plate. There are multiple thermal break frame keels, which are fixed to each other to form a rectangle. The thermal break frame keel, the precast steel truss cement slab and the inner side plate form a closed frame.

[0012] The precast reinforced concrete truss slab includes:

[0013] Cement board: The cement board is fixedly connected to the frame keel of the thermal break bridge;

[0014] Steel truss: The bottom surface of the steel truss is prefabricated with the cement board, the thermal insulation cementitious layer is formed by filling material, and the steel truss is located inside the thermal insulation cementitious layer;

[0015] Steel mesh: The steel mesh is fixedly connected to the steel truss.

[0016] The principle behind this design is as follows: A combination of steel trusses and steel mesh is used. First, the steel trusses are fitted into the steel mesh, followed by concrete pouring to form a robust precast steel truss concrete slab. During this process, some sections of the steel trusses are intentionally exposed for later processing. Next, an insulating mortar layer is filled into the frame joists of the thermally broken bridge, embedding the exposed steel truss sections into the insulating mortar layer. In this way, one end of the steel truss is firmly fixed to the concrete slab, while the other end is completely encased within the insulating mortar layer, ensuring the structural integrity and insulation effect.

[0017] The specific steps are as follows: 1. Assemble the steel truss and steel mesh: Precisely fit the steel truss into the pre-arranged steel mesh to ensure that the two are tightly connected, providing a stable frame for subsequent concrete pouring.

[0018] 2. Concrete Pouring: Pour concrete around the assembled steel truss and steel mesh to form a monolithic precast steel truss cement slab. This process must ensure that the concrete fully fills all voids and reaches the required thickness and strength as designed.

[0019] 3. Reserve exposed steel truss: When pouring concrete, intentionally leave part of the steel truss uncovered, allowing it to extend naturally out of the concrete slab surface, in preparation for the next step.

[0020] 4. Install the thermal break frame frame joists and fill with insulation material: Install the thermal break frame frame joists to create a closed space around the edge of the precast steel truss concrete slab. Fill the interior of the thermal break frame frame joists with high-efficiency polyurethane insulation material, ensuring that the insulation adhesive layer evenly and densely covers the exposed steel truss portion.

[0021] Final Formation: After the insulation material has cured, one end of the steel truss is firmly fixed to the precast steel truss cement slab, while the other end is completely embedded in the insulation cementitious layer, forming a composite structural system with both high strength and excellent insulation performance.

[0022] The beneficial effects of this solution are as follows: the precast reinforced concrete truss slabs are manufactured in advance using specialized equipment, resulting in high production efficiency and stable quality. Through interaction with the main reinforcement bars in the truss, the reinforcing mesh significantly improves the structure's shear resistance, preventing damage caused by localized stress concentration.

[0023] Furthermore, the thermal break frame keel is made of galvanized steel sheet roll forming, or is made of thermal break aluminum alloy.

[0024] Utilizing high-strength galvanized steel sheets, it provides sufficient load-bearing capacity while maintaining a relatively light weight. The thermal break frame keel, formed by roll forming of galvanized steel sheets, reduces the structural weight, lowers foundation construction costs, and improves transportation and installation efficiency.

[0025] Furthermore, the thermal break frame keel includes two interconnected thermal break structures, with a thermal break strip between them. The thermal break structures can be made of thermal break aluminum alloy, steel pipe, or other materials, all of which are protected by this solution. The thermal break strip further enhances the thermal insulation effect, reducing the effect of thermal bridging.

[0026] Furthermore, the heat insulation strip is made of polyurethane. Using polyurethane blocks for the heat insulation strip provides better insulation performance.

[0027] Thermal bridging refers to the phenomenon in building envelopes where high thermal conductivity of certain materials leads to rapid heat transfer through these areas. This phenomenon can have a series of negative impacts, affecting not only the building's energy efficiency but also potentially harming the health of residents and the building structure itself. Existing solutions typically involve internal insulation layers, but heat transfer still occurs at the frame joists, resulting in thermal bridging. This solution addresses this by fixing polyurethane blocks between the lightweight steel profiled joists and steel pipes, utilizing the low thermal conductivity of the polyurethane blocks to prevent thermal bridging.

[0028] Meanwhile, polyurethane blocks have good elasticity and energy absorption capacity, which can effectively buffer impact forces and protect mechanical equipment from vibration and impact. Moreover, when light steel profiled keel and steel pipe expand due to heat, polyurethane blocks can also play a buffering role.

[0029] Furthermore, the thermal insulation cementitious layer filler is modified polyurethane (PIR). PIR has an extremely low thermal conductivity (typically around 0.020 W / m·K), far lower than most other types of insulation materials. This allows it to more effectively prevent heat transfer, reduce building energy consumption, and improve energy efficiency.

[0030] PIR's closed-cell structure ensures minimal change in its insulation performance over time, maintaining high insulation efficiency even after prolonged use. This reduces performance degradation due to material aging and extends the lifespan of the insulation system.

[0031] Compared to other brittle insulation materials, PIR is more resilient and can withstand external impacts without easily breaking. This enhances the convenience of construction and the protection of the finished product.

[0032] Furthermore, it also includes a lifting component, which is fixedly connected to the steel truss. The lifting component is used to hang the exterior wall panels on the wall. After fixing, the lifting component can be removed.

[0033] Furthermore, the steel trusses are multiple in number and are staggered and fixedly connected to form a grid structure. The staggered arrangement of the trusses allows for a more even distribution of loads to the supporting structure, reducing the possibility of localized stress concentration. This improves the overall stability and load-bearing capacity of the structure and reduces the risks associated with uneven settlement or deformation.

[0034] Furthermore, pre-embedded brackets are provided at the intersections of the steel trusses, and high-strength bolts are provided on the brackets to cooperate with them. During installation, the high-strength bolts are fixedly connected to the pre-embedded brackets, which allows the exterior wall panels to be easily installed on the wall, making the operation convenient.

[0035] Furthermore, the high-strength bolts are made of basalt. Additionally, other accessories used to secure the high-strength bolts during installation can also be made of basalt. Basalt high-strength bolts possess high tensile strength while being lightweight, and their specific strength (strength to density ratio) is superior to that of traditional steel reinforcement. Basalt high-strength bolts can provide sufficient load-bearing capacity while reducing the structural weight. The coefficient of thermal expansion of basalt is close to that of concrete, resulting in less stress caused by temperature differences between the two, effectively reducing the cold bridge effect. Attached Figure Description

[0036] Figure 1 This is a structural diagram of a novel exterior wall panel with a composite steel truss insulation and decorative structure.

[0037] Figure 2 This is a side sectional view of a novel exterior wall panel with a composite steel truss insulation and decorative structure.

[0038] The reference numerals in the accompanying drawings include: 1. Cement board; 2. Steel truss; 3. Inner side plate; 4. Thermal insulation cementitious layer; 5. Steel pipe; 6. Light steel profiled keel; 7. Polyurethane block. Detailed Implementation

[0039] The basics are as follows: Figure 1 , Figure 2 As shown:

[0040] This solution provides a novel exterior wall panel with a composite steel truss 2 thermal insulation and decorative structure, comprising a precast steel truss cement board, a thermal insulation cementitious layer 4, a thermal break frame joists, and an inner panel 3. The precast steel truss cement board includes: a cement board 1, a steel truss 2, and a steel mesh. The thermal break frame joists include light steel profiled joists 6, polyurethane blocks 7, and steel pipes 5.

[0041] Steel pipe 5 is a square steel pipe. The square cross-section provides a uniform stress distribution, reducing the possibility of local stress concentration. Square steel pipes improve the overall structural stability and safety, and are particularly suitable for critical components such as load-bearing walls, columns, and beams.

[0042] The thermal break frame keel is made of galvanized steel sheet rolled into shape, or thermal break aluminum alloy. The thermal break frame keel is rectangular, and the thermal break frame keel, together with the precast steel truss cement slab and inner side plate 3, forms a closed frame.

[0043] Utilizing high-strength galvanized steel sheets, it provides sufficient load-bearing capacity while maintaining a relatively light weight. The thermal break frame keel, formed by roll forming of galvanized steel sheets, reduces the structural weight, lowers foundation construction costs, and improves transportation and installation efficiency.

[0044] The thermal break frame frame is made of polyurethane composite basalt fiber. Basalt fiber has high tensile strength, while polyurethane provides good toughness and elasticity. The resulting composite material can provide excellent load-bearing capacity while reducing weight.

[0045] The thickness of the precast steel truss cement slab is 20-22 mm, preferably 20 mm; the thickness of the thermal insulation cementitious layer 4 is 180-220 mm, preferably 200 mm; and the thickness of the inner side plate 3 is 8-12 mm, preferably 10 mm.

[0046] Cement board 1 is fixedly connected to steel pipe 5. Steel truss 2 is a triangular pyramidal structure with rounded corners. The bottom surface of steel truss 2 is cast and connected to cement board 1. Insulation cementitious layer 4 is formed by injection molding, and the filler is modified polyurethane PIR. Steel truss 2 is located inside insulation cementitious layer 4. Steel mesh and steel truss 2 are cast together with concrete.

[0047] The outer cement board 1 can be made into a decorative cement board 1 with textures (brick patterns, stone patterns, etc.) by using a "reverse-casting" process, or it can be made into a decorative board by using facing bricks or decorative panels as the base film.

[0048] The inner side panel 3 can be made of gypsum board or calcium silicate board. The inner side panel 3 is fixedly connected to the light steel profiled keel 6. A polyurethane block 7 is provided between the light steel profiled keel 6 and the steel pipe 5.

[0049] The thermal break frame keel can be made of galvanized steel sheet roll forming or polyurethane composite basalt fiber. In this embodiment, the thermal break frame keel is composed of steel pipe 5, polyurethane block 7, and light steel profiled keel 6.

[0050] The principle of this scheme is as follows: This design scheme uses a combination of steel truss 2 and steel mesh. First, the steel truss 2 is inserted into the steel mesh, and then concrete is poured to form a solid precast steel truss cement slab. During this process, some of the steel truss 2 will be intentionally exposed for subsequent processing. Then, steel pipes 5 are welded to the top and bottom ends of the cement slab 1, and light steel profiled keel 6 is welded to the top, bottom, left, and right ends of the inner plate 3, so that the cement slab 1 and the light steel profiled keel 6 are aligned and flow out of the pouring port.

[0051] High-efficiency thermal insulation material (such as polyurethane PIR, rock wool, etc.) is injected into the interior of the frame keel of the thermally broken bridge to ensure that the thermal insulation cement layer 4 uniformly and densely wraps the exposed steel truss 2.

[0052] Finally, the polyurethane block 7 is bolted to the injection port between the light steel profiled keel 6 and the steel pipe 5 to form a seal. After the insulation material has cured, one end of the steel truss 2 is firmly fixed to the precast steel truss cement board, while the other end is completely embedded in the insulation cementitious layer 4, forming a composite structural system with both high strength and excellent insulation performance.

[0053] The beneficial effects of this solution are as follows: 1. The mesh layout of the reinforcing steel mesh fixes the position of the reinforcing bars, reducing potential positional deviations during manual tying. Through interaction with the main reinforcing bars in the truss, the reinforcing steel mesh significantly improves the structure's shear resistance, preventing damage caused by localized stress concentration. 2. The reinforcing steel truss 2 is triangular, one of the most stable geometric shapes, and not easily deformed. Therefore, the triangular truss has extremely high geometric stability and resistance to deformation. 3. Compared to other brittle insulation materials, PIR is more resilient, able to resist external impacts and is less prone to breakage. This enhances the convenience of construction and the effectiveness of finished product protection. 4. This solution uses polyurethane blocks 7 fixed between the light steel profiled keel 6 and the steel pipe 5, avoiding thermal bridging effects through the low conductivity of the polyurethane blocks 7. Simultaneously, the polyurethane blocks 7 have good elasticity and energy absorption capacity, effectively buffering impact forces and protecting mechanical equipment from vibration and impact. Moreover, when the light steel profiled keel 6 and the steel pipe 5 undergo thermal expansion, the polyurethane blocks 7 also act as a buffer.

[0054] The above are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A novel exterior wall cladding panel with a composite steel truss insulation and decorative structure, comprising: Precast reinforced concrete truss slab; Thermal insulation cementitious layer (4); Inner side plate (3); The precast steel truss cement board, thermal insulation cement layer (4) and inner side plate (3) are fixedly connected from the outside to the inside. The broken bridge frame keel: one end of the broken bridge frame keel is fixedly connected to the precast steel truss cement slab, and the other end is fixedly connected to the inner side plate (3). There are multiple broken bridge frame keels, which are fixed to each other to form a rectangle. The broken bridge frame keel, the precast steel truss cement slab and the inner side plate (3) form a closed frame. Its features are, The precast reinforced concrete truss slab includes: Cement board (1): The cement board (1) is fixedly connected to the frame keel of the thermal break bridge; Steel truss (2): The bottom surface of the steel truss (2) is prefabricated with the cement board (1), the thermal insulation cementitious layer (4) is formed by filling material, and the steel truss (2) is located inside the thermal insulation cementitious layer (4); Steel mesh: The steel mesh is fixedly connected to the steel truss (2).

2. The novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 1, characterized in that, The thermal break frame keel is made of galvanized steel sheet rolled into shape, or is made of thermal break aluminum alloy.

3. The novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 1, characterized in that, The thermal break frame keel includes two interconnected thermal break structures that are fixed to each other, with a heat insulation strip between the thermal break structures.

4. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 3, characterized in that, The thermal insulation strip is made of polyurethane.

5. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 1, characterized in that, The material of the thermal insulation cementitious layer (4) is modified polyurethane PIR.

6. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 1, characterized in that, It also includes a lifting component, which is fixedly connected to the steel truss (2).

7. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 1, characterized in that, There are multiple steel trusses, which are interlocked and fixedly connected to form a grid structure.

8. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 7, characterized in that, At the intersection of the steel trusses, there is a pre-embedded bracket, and the bracket is equipped with a high-strength bolt that matches it.

9. A novel exterior wall panel with a composite steel truss insulation and decorative structure according to claim 8, characterized in that, The high-strength bolts are made of basalt.

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