Sandwich thermal insulation wallboard and construction method thereof

Abstract

The application discloses a kind of sandwich thermal insulation wallboard and its construction method, sandwich thermal insulation wallboard includes outer leaf wallboard, thermal insulation board and inner leaf wallboard, it can further include screw rod, multiple pressure-bearing devices are provided in thermal insulation board, pressure-bearing device is the hollow cavity of two ends open, two ends are flush with the two side surfaces of thermal insulation board respectively, to be contacted with outer leaf wallboard and inner leaf wallboard pressure-bearing respectively, screw rod is used to connect outer leaf wallboard, thermal insulation board and inner leaf wallboard.Compared with prior art, by setting pressure-bearing device in thermal insulation board, thermal insulation board can be effectively prevented from being pressed, the pressure-bearing device adopts hollow cavity structure, and the layout in thermal insulation board can be completed by simple extrusion, without increasing complex process, with performance and cost advantage.The application also adds connecting screw rod, improves the connection strength and connection stability of existing sandwich thermal insulation wallboard, and the connecting screw rod can be combined and installed with pressure-bearing device, to further optimize process and structure.

Description

Technical Field

[0001] This invention belongs to the field of building technology, and relates to thermal insulation wall panel structures, and particularly to a sandwich thermal insulation wall panel and its construction method. Background Technology

[0002] Sandwich insulation wall panels are an innovative wall structure that cleverly integrates insulation materials and wall structure into one, providing excellent thermal insulation performance while simplifying the construction process. This design allows construction teams to complete the installation of the wall and insulation layer in one go during the installation process, avoiding the cumbersome steps of handling insulation materials and walls separately in traditional construction, and significantly improving construction efficiency.

[0003] To further reduce the self-weight of the walls, existing technologies utilize various lightweight concrete materials, including steam-pressurized concrete, foamed concrete, and foamed particle concrete, to construct the inner and outer lobes of sandwich insulation wall panels. These materials are not only lightweight but also possess good structural stability, helping to reduce the overall building load.

[0004] However, in actual construction, some limitations have been observed in the existing sandwich-type lightweight wall panel design. Current designs only consider the connection between the inner and outer leaf wall panels, neglecting the structural strength of the insulation layer material. Under external forces such as wind pressure, the insulation layer may undergo plastic deformation, leading to irreversible damage or even displacement. Furthermore, some organic insulation materials may deteriorate and pulverize under prolonged ultraviolet radiation and the passage of time, which will also affect the performance of the insulation layer.

[0005] Both of these situations can lead to gaps between the inner and outer leaf wall panels, affecting the overall stability of the wall and potentially causing damage to the building facade, or even serious problems such as water leakage. Therefore, how to avoid pressure on the sandwich insulation board, improve the durability and reliability of the sandwich insulation wall panel, and ensure a stronger connection between the insulation layer and the inner and outer leaf wall panels is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide a sandwich insulation wall panel and its construction method to solve the problems of sandwich insulation panels being easily subjected to pressure and unreliable connections, while simplifying the corresponding construction process as much as possible.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A sandwich insulated wall panel, comprising an outer leaf wall panel, an insulation board, and an inner leaf wall panel, characterized in that the insulation board is provided with multiple pressure-bearing devices, each of which is a hollow cavity open at both ends, with its two ends flush with the two sides of the insulation board, thereby contacting and bearing pressure with the outer leaf wall panel and the inner leaf wall panel respectively.

[0009] In one embodiment, one or both ends of the pressure-bearing device extend along the corresponding side of the insulation board toward the inner or outer side of the hollow cavity to form an extension.

[0010] In one embodiment, the cross-section of the pressure-bearing device is circular, elliptical, or regular polygonal, and its material is ordinary steel, stainless steel, or FRP. Its cross-sectional area is determined based on the external load on the wall panel, using the following formula: ΣS i ≥P, S i P is the bearing capacity of a single pressure-bearing device, and P is the out-of-plane load. The strength bearing capacity of the pressure-bearing device is greater than the maximum out-of-plane load on the wall panel.

[0011] In one embodiment, the outer leaf wall panel, the insulation board, and the inner leaf wall panel are bonded together and connected by multiple screws. Each screw passes through the outer leaf wall panel, the insulation board, and the inner leaf wall panel, and is fixed at both ends with nuts and washers. Both ends are flush with the wall surfaces of the outer leaf wall panel and the inner leaf wall panel.

[0012] In one embodiment, the screw passes through the outer leaf wall panel, the insulation panel, and the inner leaf wall panel without passing through the hollow cavity; or, each of the screws passes through the outer leaf wall panel, the insulation panel, and the inner leaf wall panel via the hollow cavity; or, some screws pass through the outer leaf wall panel, the insulation panel, and the inner leaf wall panel without passing through the hollow cavity, while another portion of the screws passes through the outer leaf wall panel, the insulation panel, and the inner leaf wall panel via the hollow cavity.

[0013] The present invention also provides a construction method for the sandwich insulation wall panel, comprising the following steps:

[0014] Step 1: Place one end of the pressure-bearing device on one side surface of the pre-processed insulation board, and press it into the insulation board from the other end of the pressure-bearing device, making its two ends flush with the two surfaces of the insulation board; wherein the insulation board is made of extruded polystyrene board, molded polystyrene board, rigid polyurethane foam board, phenolic board or rock wool.

[0015] Step 2: Lay the insulation board that was pressed into the pressure-bearing device in Step 1 onto the pre-processed outer or inner leaf wall panel, and use an adhesive to enhance the interfacial bonding force.

[0016] Step 3: Lay the pre-processed inner or outer leaf wall panels on the insulation board and use an adhesive to enhance the interfacial bonding.

[0017] The present invention also provides another construction method for the sandwich insulation wall panel, comprising the following steps:

[0018] Step 1: Lay the pre-processed insulation board on the pre-processed outer or inner leaf wall panel, and use an adhesive to enhance the interfacial bonding force; wherein the insulation board is made of extruded polystyrene board, molded polystyrene board, rigid polyurethane foam board, phenolic board or rock wool.

[0019] Step 2: Place one end of the pressure-bearing device on the surface of the insulation board, and press it into the insulation board from the other end of the pressure-bearing device until one end of the pressure-bearing device contacts the outer leaf wall panel or the inner leaf wall panel. At this time, both ends of the pressure-bearing device are flush with the two surfaces of the insulation board.

[0020] Step 3: Lay the pre-processed inner or outer leaf wall panels on the insulation board and use an adhesive to enhance the interfacial bonding.

[0021] In one embodiment, step 2 involves pressing a pre-processed inner or outer leaf wall panel into the insulation board from the other end of the pressure-bearing device, and then directly laying the insulation board after pressing.

[0022] In one embodiment, after step 3 is completed, through-hole mounting holes are machined on the outer leaf wall panel, insulation board and inner leaf wall panel. The outer leaf wall panel, insulation board and inner leaf wall panel are connected by screws passing through the mounting holes. The two ends of the screws are fixed with nuts and washers, and are flush with the wall surface of the outer leaf wall panel and inner leaf wall panel or recessed in the outer leaf wall panel and inner leaf wall panel.

[0023] In one embodiment, the outer and inner leaf wall panels are marked with positions corresponding to some or all of the pressure-bearing devices, and mounting holes are machined at the marked locations so that the mounting holes pass through the hollow cavity of the pressure-bearing device.

[0024] Compared with the prior art, the present invention can effectively prevent the insulation board from being compressed by setting a pressure-bearing device in the insulation board. The pressure-bearing device adopts a hollow cavity structure and can be installed in the insulation board by simple extrusion without adding complicated processes, thus having both performance and cost advantages.

[0025] The present invention also adds a connecting screw, which improves the connection strength and stability of the existing sandwich insulation wall panel. The connecting screw can also be combined with the pressure-bearing device for further optimization of the process and structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cross-section of the sandwich insulation wall panel of the present invention.

[0027] Figure 2This is a plan view of the insulation board in an embodiment of the present invention, wherein the pressure-bearing devices are arranged in a single straight line.

[0028] Figure 3 This is a plan view of the insulation board in an embodiment of the present invention, wherein the pressure-bearing devices are arranged in two intersecting straight lines.

[0029] Figure 4 This is a plan view of the insulation board in an embodiment of the present invention, wherein the pressure-bearing devices are arranged symmetrically in two straight lines.

[0030] Figure 5 This is a panel view of the sandwich insulation wall panel in an embodiment of the present invention, wherein the screw does not pass through the pressure-bearing device.

[0031] Figure 6 for Figure 5 A cross-sectional view.

[0032] Figure 7 This is a panel view of the sandwich insulation wall panel in an embodiment of the present invention, wherein the screws pass through each pressure-bearing device.

[0033] Figure 8 for Figure 7 A cross-sectional view.

[0034] Figure 9 This is a schematic diagram of the screw and its bolt and washer assembly structure of the present invention.

[0035] Figure 10 This is a schematic diagram of the construction process of a sandwich insulated wall panel in one embodiment of the present invention.

[0036] Figure 11 This is a schematic diagram of the construction process of the sandwich insulation wall panel in another embodiment of the present invention. Detailed Implementation

[0037] The specific technical solutions of the present invention are described below with reference to the embodiments.

[0038] This invention relates to a sandwich-type insulated wall panel, designed to achieve thermal insulation performance of building walls through an integrated structure, while ensuring structural stability and durability. (Reference) Figure 1 As shown, it includes an outer leaf wall panel 1, an insulation board 2, and an inner leaf wall panel 3. The insulation board 2 is provided with multiple pressure-bearing devices 4. The pressure-bearing devices 4 are hollow cavities with open ends. Their two ends are flush with the two sides of the insulation board 2, so as to contact and bear pressure with the outer leaf wall panel 1 and the inner leaf wall panel 3 respectively.

[0039] This invention introduces a pressure-bearing device 4 into the insulation board 2 of the sandwich insulation wall panel. On the one hand, as a pressure-bearing component, the pressure-bearing device allows the insulation board 2 to be in close contact with the walls on both sides when under pressure, protecting the insulation board 2 from deformation and thus improving the stability of the overall structure. On the other hand, it can also enhance the connection strength between the insulation board 2 and the outer leaf wall panel 1 and the inner leaf wall panel 3, thereby improving the load-bearing capacity and deformation resistance of the overall wall panel.

[0040] In this structure, insulation board 2 serves as the core insulation layer of the wall. Different materials can be selected according to specific insulation requirements, such as extruded polystyrene board, molded polystyrene board, rigid polyurethane foam board, etc.

[0041] In this structure, the pressure-bearing device 4 can be made of high-strength materials, such as ordinary steel, stainless steel or FRP (fiber reinforced plastic). These materials have good durability and corrosion resistance, as well as high strength, which helps to extend the service life of the wall panel.

[0042] This invention's sandwich insulated wall panel, through its integrated structure and innovative pressure-bearing device 4, not only improves the thermal insulation performance of building walls but also enhances structural stability and durability. Furthermore, the construction process is simple and easy to operate, which helps improve construction efficiency and reduce costs.

[0043] In some embodiments of the present invention, the pressure-bearing device 4 can be arranged in various different ways in the insulation board 2, for example... Figure 2 The uniform arrangement along a single straight line, as shown, achieves a uniform load distribution across the width of the wall panel, reducing localized stress concentration. It also facilitates construction and quality control, making it suitable for situations where the wall panel width is small or the load distribution is relatively uniform. It can also be used for... Figure 3 The arrangement shown is staggered along two straight lines, meaning the pressure-bearing devices 4 are arranged along two parallel straight lines, with the devices 4 on the two lines intersecting each other. This staggered arrangement provides better structural stability because the pressure-bearing devices 4 can more effectively resist bidirectional loads. It is suitable for situations requiring the bearing of complex loads or where the wall panel width is large. Compared to a single straight-line arrangement, the staggered arrangement is slightly more difficult to construct, requiring construction workers to pay closer attention to the accuracy of positioning. It can also... Figure 4 The wall panels are arranged symmetrically along two straight lines. This symmetrical arrangement helps to balance the load in the width direction of the wall panels and reduces structural deformation caused by uneven load.

[0044] In some embodiments of the present invention, the structure of the pressure-bearing device 4 is also modified to a certain extent, that is, it has an extension at its end. For example, it has an extension at only one end, specifically extending along the direction of the insulation board 2 facing the inside of the hollow cavity to form an extension; or extending along the direction of the insulation board 2 facing the outside of the hollow cavity to form an extension. Alternatively, it has extensions at both ends, with the two ends extending towards the inside and outside of the hollow cavity respectively; or, both ends extending towards the inside of the hollow cavity; or, both ends extending towards the outside of the hollow cavity. These extensions extend inward or outward from the main structure of the pressure-bearing device, and can be in a straight line shape or designed into a specific geometric shape as needed. The material of these extensions should be the same as that of the main body of the pressure-bearing device 4 to maintain overall consistency and structural integrity. Commonly used materials include ordinary steel, stainless steel, or FRP (fiber reinforced plastic), all of which have good mechanical properties and durability. The cross-sections of these extensions can be the same as the cross-section of the main body of the pressure-bearing device 4, or they can be designed in different shapes as needed, such as circles, ellipses or regular polygons, to adapt to different structural and functional requirements.

[0045] The aforementioned extension structure further increases the contact area with the outer leaf wall panel 1 and / or the inner leaf wall panel 3, strengthening the connection between the pressure-bearing device 4 and the insulation board 2, thus better fulfilling its pressure-bearing function and providing additional stability and load-bearing capacity. Simultaneously, the extension design increases the cross-sectional area of ​​the pressure-bearing device 4, thereby improving its load-bearing capacity and meeting greater out-of-plane load requirements. The extension can also serve as additional reinforcing ribs, improving the bending and shear resistance of the insulation board 2 under stress and reducing the risk of deformation and damage to the insulation material.

[0046] However, the construction of the pressure-bearing device 4 with extensions increases the difficulty, especially when extensions are set at both ends. In this case, it is not advisable to use the extrusion method to install the pressure-bearing device 4. However, setting an extension at only one end does not significantly increase the process difficulty; it is sufficient to use the end without an extension as the insertion end. Therefore, the direction of extension towards the inside or outside of the hollow cavity is chosen, depending on the layout of the pressure-bearing device 4 in the insulation board 2 and the required structural reinforcement effect.

[0047] In some embodiments of the present invention, the cross-section of the pressure-bearing device 4 is circular, elliptical, or regular polygonal. These shapes are widely used in structural engineering because they provide good mechanical properties and uniformly distributed load-bearing capacity. Circular cross-sections have the best compressive strength, while elliptical and polygonal cross-sections can be optimized according to specific design requirements and space constraints.

[0048] In some embodiments of the present invention, the pressure-bearing device 4 is made of ordinary steel, stainless steel, or FRP (fiber reinforced plastic). Ordinary steel has good strength and rigidity and is a commonly used material in structural engineering. Stainless steel is suitable for harsh environments due to its corrosion resistance. FRP material, due to its lightweight, high strength, and corrosion resistance, has become an emerging material in modern engineering. These materials all have excellent durability and can resist the erosion of environmental factors such as humidity, temperature changes, and ultraviolet radiation, ensuring the long-term performance of the pressure-bearing device 4.

[0049] In some embodiments of the present invention, the cross-sectional area of ​​the pressure-bearing device 4 is calculated based on the external load P of the wall panel to ensure that the bearing capacity Si of each pressure-bearing device can meet the structural bearing requirements. The formula ΣSi≥P ensures that the total bearing capacity of all pressure-bearing devices is greater than or equal to the maximum external load on the wall panel, thereby guaranteeing the structural safety.

[0050] The primary function of the pressure-bearing device 4 is to bear and distribute loads from outside the wall panel, ensuring the overall stability and safety of the sandwich insulation wall panel. Therefore, precise calculations and design are required to ensure that the pressure-bearing device 4 can withstand loads from different directions, including vertical and horizontal loads. By uniformly distributing the load, the pressure-bearing device 4 reduces localized stress concentration, thereby improving the overall stability of the wall panel. After the wall panel is installed, a load test should be conducted to verify whether the actual load-bearing capacity of the pressure-bearing device 4 meets the design requirements.

[0051] In some embodiments of the present invention, the outer leaf wall panel 1, the insulation board 2, and the inner leaf wall panel 3 are bonded together using a high-performance adhesive and connected by multiple screws 5. Before bonding, the contact surfaces of the outer leaf wall panel 1 and the inner leaf wall panel 3 need to be cleaned to remove dust, oil, etc., to ensure that the adhesive can form a good bond with the wall surface. Each screw 5 passes through the outer leaf wall panel 1, the insulation board 2, and the inner leaf wall panel 3, and is fixed at both ends with nuts 6 and washers 7, and both ends are flush with the wall surface of the outer leaf wall panel 1 and the inner leaf wall panel 3. As mechanical connectors, the diameter, length, and material of the screws 5 need to be selected according to the thickness, weight, and expected load-bearing requirements of the wall panels. The screws 5 should be evenly distributed to ensure uniform stress on the wall panel structure and avoid structural damage caused by local stress concentration. Nuts 6 and washers 7 are used to fix the screws 5 and ensure the reliability of the connection. Figure 9 As shown. The two ends of the overall structure of screw 5, nut 6 and washer 7 should be flush with the wall surface to maintain the flatness and aesthetics of the wall surface.

[0052] The construction process of this embodiment:

[0053] First, perform the bonding process, bonding the outer leaf wall panel 1, insulation board 2, and inner leaf wall panel 3 together according to the design requirements. Before the adhesive cures, locate the position of the screw rod 5 and pre-drill holes to facilitate subsequent screw installation. Pass the screw rod 5 through the pre-drilled holes, ensuring accurate positioning. Use nuts 6 and washers 7 to tighten the screw rod 5, ensuring a secure and reliable connection. During tightening, carefully control the force to avoid overtightening and damaging the materials. After completion, conduct a comprehensive quality inspection, including the bonding quality, the accuracy of screw installation, and the tightness of the tightening.

[0054] In this embodiment, the combination of adhesive and mechanical connections provides extremely high integrity and stability, enabling the sandwich insulation wall panel to withstand loads under various environmental conditions. Meanwhile, the threaded connection provides a degree of disassembly, facilitating future maintenance and replacement.

[0055] In some embodiments of the present invention, a portion of the screw 5 passes directly through the outer leaf wall plate 1, the insulation plate 2, and the inner leaf wall plate 3, while another portion of the screw 5 passes through the hollow cavity through the outer leaf wall plate 1, the insulation plate 2, and the inner leaf wall plate 3, such as... Figure 5 and Figure 6 As shown. Alternatively, the screw 5 passes directly through the outer leaf wall plate 1, the insulation plate 2, and the inner leaf wall plate 3; or, each of the screws 5 passes through the hollow cavity through the outer leaf wall plate 1, the insulation plate 2, and the inner leaf wall plate 3, as shown. Figure 7 and Figure 8 As shown.

[0056] As a key connecting element in the sandwich insulation wall panel, the threaded rod 5's connection method directly affects the structural stability and ease of construction of the wall panel. This embodiment provides three different threaded rod connection schemes:

[0057] 1) The screw 5 passes directly through the outer leaf wall panel 1, the insulation board 2, and the inner leaf wall panel 3, without passing through the hollow cavity of any pressure-bearing device 4. This scheme adopts direct connection, which is simple to construct, easy to operate, suitable for rapid construction and large-scale production, and more economical in terms of material and construction costs.

[0058] 2) The screw 5 passes through the hollow cavities of all pressure-bearing devices 4 in the outer leaf wall panel 1 and the insulation board 2, as well as the inner leaf wall panel 3. This design, through the passage of the hollow cavities, optimizes the stress distribution of the pressure-bearing devices 4 and improves the overall structural stability. At the same time, the hollow cavities prevent the screw 5 from directly contacting the insulation board 2, reducing damage to the insulation material.

[0059] 3) Some screws 5 pass directly through the outer leaf wall panel 1, insulation board 2, and inner leaf wall panel 3, while other screws 5 pass through the hollow cavity of the pressure-bearing device 4. This scheme combines the advantages of direct connection and connection through the hollow cavity, offering flexibility and allowing the selection of the most suitable connection method based on specific structural requirements and construction conditions, adapting to different engineering needs. By distributing the connection methods of the screws 5, the structural risks that may arise from a single connection method can be reduced.

[0060] Regardless of the connection method, the position of screw 5 needs to be precisely located to ensure uniform stress on the structure. When tightening screw 5, the tightening force must be controlled to avoid material damage due to localized overtightening. Furthermore, a comprehensive quality inspection should be conducted after construction to ensure that the connection method of all screws 5 meets the design requirements.

[0061] The present invention further provides a first construction method for sandwich insulation wall panels, comprising the following steps:

[0062] Step 1, Installation of pressure-bearing device 4.

[0063] Select appropriate materials for the pressure-bearing device 4 according to the design requirements, and pre-process the insulation board 2. The materials that can be selected include extruded polystyrene board, molded polystyrene board, rigid polyurethane foam board, phenolic board or rock wool.

[0064] Mark the position of the pressure-bearing device 4 on one side of the insulation board 2, and place one end of the pressure-bearing device 4 aligned with the mark.

[0065] Use a special tool or mechanical pressure to press the pressure-bearing device 4 into the insulation board 2 from the other end until both ends of the pressure-bearing device 4 are completely flush with the two surfaces of the insulation board 2.

[0066] Check whether the pressure-bearing device 4 is installed correctly, ensure that there is no gap between the pressure-bearing device 4 and the insulation board 2, and that the position of the pressure-bearing device 4 is accurate.

[0067] Step 2, laying the first layer of wall panels.

[0068] Ensure that the surface of the outer leaf wall panel 1 or the inner leaf wall panel 3 is flat, clean, and free of oil, dust or other impurities.

[0069] Select a suitable adhesive and apply it evenly to the surface of the outer leaf wall panel 1 or the inner leaf wall panel 3 according to the manufacturer's instructions.

[0070] The insulation board 2 equipped with the pressure-bearing device 4 is laid on the pre-processed outer leaf wall panel 1 or inner leaf wall panel 3, and gently pressed to ensure that the adhesive is evenly distributed, while ensuring that the position of the insulation board 2 is accurate.

[0071] Allow the adhesive to fully cure, avoiding disturbance during the process, to ensure the bonding strength of the adhesive layer.

[0072] Step 3: Laying the second layer of wall panels.

[0073] Perform the same substrate treatment on either the inner leaf wall panel 3 or the outer leaf wall panel 1 that will be laid. It is easy to understand that if the first layer of wall panel laid in step 2 is the outer leaf wall panel 1, then the second layer of wall panel here is the inner leaf wall panel 3. Similarly, if the first layer of wall panel laid in step 2 is the inner leaf wall panel 3, then the second layer of wall panel here is the outer leaf wall panel 1.

[0074] Apply adhesive evenly to the upper surface of the insulation board 2. Here, the upper surface refers to the exposed surface of the insulation board 2.

[0075] Lay the pre-processed inner leaf wall panel 3 or outer leaf wall panel 1 on the insulation board 2, ensuring that the wall panel is aligned with the insulation board 2 below.

[0076] Use appropriate tools to gently press the second layer of wall panel to ensure that the adhesive is evenly distributed and forms an effective bond.

[0077] After the installation is completed, a comprehensive inspection is carried out to ensure that all wall panels and insulation boards are connected correctly and that the position and condition of the pressure-bearing device 4 meet the design requirements.

[0078] After the adhesive has fully cured, the next step can be carried out, such as installing fasteners or performing surface treatment.

[0079] This invention further provides a first construction method for sandwich insulation wall panels, see reference. Figure 10 As shown, it includes the following steps:

[0080] Step 1: Laying and bonding the insulation board.

[0081] Before laying the insulation board 2, thoroughly inspect the surface of the outer leaf wall panel 1 or the inner leaf wall panel 3 to ensure that it is flat, dry, dust-free, free of grease and other contaminants.

[0082] Choose appropriate insulation materials based on design requirements and insulation performance needs, such as extruded polystyrene board, molded polystyrene board, rigid polyurethane foam board, phenolic board, or rock wool.

[0083] The pre-processed insulation board 2 is laid on the outer leaf wall panel 1 or the inner leaf wall panel 3, with the edges aligned and the gaps between the boards controlled to ensure continuity and uniformity.

[0084] Choose a suitable adhesive, such as polymer-modified cement-based or special insulating material adhesive, and apply it evenly to the contact surface between the insulation board 2 and the wall panel.

[0085] Gently press the insulation board 2 firmly to ensure the adhesive is evenly distributed, and check that the insulation board 2 is placed correctly horizontally and vertically.

[0086] Step 2, Installation of pressure-bearing device 4

[0087] Place one end of the pressure-bearing device 4 at the predetermined position on the insulation board 2, ensuring accurate positioning for precise connection in subsequent steps.

[0088] Apply appropriate force from the other end of the pressure-bearing device 4 and press it into the insulation board 2. During the pressing process, continuously check whether both ends of the pressure-bearing device 4 are flush with the surface of the insulation board 2 to ensure that the pressure-bearing device 4 is installed correctly. According to the design dimensions, when one end of the pressure-bearing device 4 contacts the outer leaf wall panel 1 or the inner leaf wall panel 3, both ends of the pressure-bearing device 4 should be flush with the surface of the insulation board 2.

[0089] Step 3: Laying and bonding the second layer of wall panels.

[0090] For the inner leaf wall panel 3 or the outer leaf wall panel 1 that is about to be laid, repeat the substrate inspection and treatment in step 1.

[0091] Lay the pre-processed inner leaf wall panel 3 or outer leaf wall panel 1 on the insulation board 2, ensuring that it is aligned with the insulation board 2 below.

[0092] Apply adhesive evenly to the upper surface of insulation board 2, then lay the second layer of wall panel and compact it.

[0093] Allow the adhesive to fully cure, avoiding disturbance during the process, to ensure the bonding strength of the adhesive layer.

[0094] The preferred construction method of this embodiment is as follows: In step 2, the pre-processed inner leaf wall panel 3 or outer leaf wall panel 1 is pressed into the insulation board 2 from the other end of the pressure-bearing device 4. This allows the insulation board to be laid directly after pressing, thus improving construction efficiency.

[0095] The preferred construction method in this embodiment: (Refer to...) Figure 11As shown, after step 3 is completed, accurately mark the positions of the mounting holes on the outer leaf wall panel 1, insulation board 2, and inner leaf wall panel 3. These marks should take into account the presence of the pressure-bearing device 4 to ensure that the screw 5 can pass through correctly. The diameter of the mounting hole should be slightly larger than the diameter of the screw 5 to facilitate the smooth passage of the screw and leave an appropriate gap to reduce friction. Select a suitable screw 5 according to the design requirements and load-bearing capacity calculations, including its material, diameter, and length. Place the screw 5 in the pre-machined mounting hole, ensuring that the position of the screw is consistent with the mark. Pass the screw 5 through the outer leaf wall panel 1, insulation board 2, and inner leaf wall panel 3, avoiding damage to the insulation material. Select a nut 6 that matches the diameter of the screw 5, ensuring that the nut can be properly screwed onto the screw. Select a washer 7 of appropriate thickness to ensure that the ends of the overall structure of the screw 5, nut 6, and washer 7 are flush with the wall surface of the outer leaf wall panel 1 and inner leaf wall panel 3 or located in the inner groove of the wall surface. Screw nuts 6 onto both ends of screw 5, place washers 7, and tighten the nuts evenly using appropriate tools. Through the above detailed mechanical fixing steps and precautions, the structural stability of the sandwich insulation wall panel is enhanced. The use of screw 5 not only improves the load-bearing capacity of the wall panel, but also achieves precise fixing to the outer leaf wall panel 1 and the inner leaf wall panel 3 through the cooperation of nuts 6 and washers 7.

[0096] The preferred construction method of this embodiment is as follows: Determine the specific location of the pressure-bearing device 4 on the insulation board 2 according to the design drawings. Use a marker or scoring tool to clearly mark the corresponding positions on the outer leaf wall panel 1 and the inner leaf wall panel 3, ensuring that the marked positions correspond to the positions of the pressure-bearing device 4. Select appropriate drill bits and drilling equipment based on the diameter of the hollow cavity of the pressure-bearing device 4 and the material properties of the outer leaf wall panel 1, the inner leaf wall panel 3, and the insulation board 2. Position the drilling equipment at the pre-marked location to ensure the accuracy of the drilling position. Drill according to the required depth and diameter, avoiding damage to the hollow cavity of the pressure-bearing device 4. After drilling, deburr the hole walls to ensure that the screw 5 can pass through smoothly. Select appropriate screw 5 according to the diameter of the mounting hole and the designed load-bearing requirements. Pass the screw 5 through the outer leaf wall panel 1, the hollow cavity of the pressure-bearing device 4, and the inner leaf wall panel 3. Install nuts 6 and washers 7 at both ends of the screw 5 to prepare for tightening. Marking and drilling are crucial for ensuring the correct installation of the pressure-bearing device 4 and the overall performance of the wall panel. This construction method not only improves construction efficiency but also ensures the long-term stability and insulation performance of the sandwich insulation wall panel.

[0097] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A construction method of a sandwich thermal insulation wallboard, the sandwich thermal insulation wallboard comprising an outer leaf wallboard (1), a thermal insulation board (2) and an inner leaf wallboard (3), a plurality of pressure bearing devices (4) are arranged in the thermal insulation board (2), the pressure bearing devices (4) are hollow cavities open at both ends, and the two ends are flush with the two side surfaces of the thermal insulation board (2) respectively, thereby contacting and bearing pressure with the outer leaf wallboard (1) and the inner leaf wallboard (3) respectively, characterized in that, It comprises the following steps: Step 1, one end of the pressure device (4) is placed on the pre-processed insulation board (2) on one side of the surface, and the other end of the pressure device (4) is pressed into the insulation board (2), and the two ends are flush with the two surfaces of the insulation board (2); wherein the insulation board (2) is made of extruded polystyrene board, molded polystyrene board, rigid polyurethane board, phenolic board or rock wool; Step 2, the insulation board (2) pressed into the pressure device (4) in step 1 is laid on the pre-processed outer leaf wallboard (1) or inner leaf wallboard (3), and the interface bonding force is enhanced by using adhesive; Step 3, the pre-processed inner leaf wallboard (3) or outer leaf wallboard (1) is laid on the insulation board (2), and the interface bonding force is enhanced by using adhesive, after the laying is completed, the mounting holes are processed on the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3), the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) are connected by using the screw rod (5) passing through the mounting holes, the two ends of the screw rod (5) are fixed by using the nut (6) and the gasket (7), and are flush with or recessed in the wall surface of the outer leaf wallboard (1) and the inner leaf wallboard (3), wherein the outer leaf wallboard (1) and the inner leaf wallboard (3) are marked corresponding to the position of part or all of the pressure device (4), and the mounting holes are processed at the marked positions, so that the mounting holes pass through the hollow cavity of the pressure device (4).

2. A construction method of a sandwich thermal insulation wallboard, the sandwich thermal insulation wallboard comprising an outer leaf wallboard (1), a thermal insulation board (2) and an inner leaf wallboard (3), a plurality of pressure bearing devices (4) are arranged in the thermal insulation board (2), the pressure bearing devices (4) are hollow cavities open at both ends, and the two ends are flush with the two side surfaces of the thermal insulation board (2) respectively, thereby contacting and bearing pressure with the outer leaf wallboard (1) and the inner leaf wallboard (3) respectively, characterized in that, It comprises the following steps: Step 1, the pre-processed insulation board (2) is laid on the pre-processed outer leaf wallboard (1) or inner leaf wallboard (3), and the interface bonding force is enhanced by using adhesive; wherein the insulation board (2) is made of extruded polystyrene board, molded polystyrene board, rigid polyurethane board, phenolic board or rock wool; Step 2, one end of the pressure device (4) is placed on the surface of the insulation board (2), and the other end of the pressure device (4) is pressed into the insulation board (2), until one end of the pressure device (4) contacts the outer leaf wallboard (1) or the inner leaf wallboard (3), at this time, the two ends of the pressure device (4) are flush with the two surfaces of the insulation board (2); Step 3, the pre-processed inner leaf wallboard (3) or outer leaf wallboard (1) is laid on the insulation board (2), and the interface bonding force is enhanced by using adhesive, after the laying is completed, the mounting holes are processed on the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3), the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) are connected by using the screw rod (5) passing through the mounting holes, the two ends of the screw rod (5) are fixed by using the nut (6) and the gasket (7), and are flush with or recessed in the wall surface of the outer leaf wallboard (1) and the inner leaf wallboard (3), wherein the outer leaf wallboard (1) and the inner leaf wallboard (3) are marked corresponding to the position of part or all of the pressure device (4), and the mounting holes are processed at the marked positions, so that the mounting holes pass through the hollow cavity of the pressure device (4).

3. The method of constructing a sandwich thermal wall panel according to claim 2, wherein, The step 2, using the pre-processed inner leaf wallboard (3) or outer leaf wallboard (1) to press the pressure bearing device (4) into the insulation board (2) from the other end, and directly lay on the insulation board (2) after the pressing is completed.

4. The method of constructing a sandwich thermal wall panel according to claim 1 or 2, wherein One end or both ends of the pressure bearing device (4) extend along the corresponding side of the insulation board (2) to the inside or outside of the hollow cavity to form an extension.

5. The method of constructing a sandwich thermal wall panel according to claim 1 or 2, wherein The cross section of the pressure bearing device (4) is circular, oval or regular polygon, the material is ordinary steel, stainless steel or FRP material, the cross section area is determined according to the wall panel out-of-plane load calculation, the formula is as follows: ΣS i ≥ P, S i The bearing capacity of a single pressure bearing device is P, the out-of-plane load is P, and the strength bearing capacity of the pressure bearing device (4) is greater than the maximum load on the wall panel out-of-plane.

6. The method of constructing a sandwich thermal wall panel according to claim 1 or 2, wherein The outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) are bonded together and connected by a plurality of screw rods (5), each of which passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3), and is fixed at both ends by a nut (6) and a washer (7), and both ends are flush with the wall surface of the outer leaf wallboard (1) and the inner leaf wallboard (3).

7. The method of constructing a sandwich thermal wall panel according to claim 6, wherein, The screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) without passing through the hollow cavity; or each of the screw rods (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) through the hollow cavity; or part of the screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) without passing through the hollow cavity, and the other part of the screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) through the hollow cavity. The screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) without passing through the hollow cavity; or each of the screw rods (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) through the hollow cavity; or part of the screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) without passing through the hollow cavity, and the other part of the screw rod (5) passes through the outer leaf wallboard (1), the insulation board (2) and the inner leaf wallboard (3) through the hollow cavity.

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