Composite light wallboard

Abstract

The embodiment of the utility model discloses a composite light wallboard, in the specific implementation mode, an outdoor side light board and an indoor side light board of the composite light wallboard are light concrete boards, and cooperative work pieces are independently distributed wavy fiber reinforced composite materials or hollow steel pipes. The cooperative work piece is directly embedded in the outdoor side light board and the indoor side light board in the preparation process of the composite light wallboard, and one-time forming of the outdoor side light board and the indoor side light board is achieved. According to the implementation mode, the outdoor side light board and the indoor side light board of the composite light wallboard can be efficiently combined to bear out-of-plane loads, the cooperative work pieces independently dispersed within the large combined stress requirement range can relieve the cracking problem of the outdoor side light board under the temperature effect, the overall thickness of the wall is obviously reduced compared with the prior art, and the overall thickness of the wall is reduced. Materials with poor durability such as binders and organic thermal insulation materials are not needed for force transmission, the stress performance is more reliable, and the durability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction, relates to a building thermal insulation wall, and particularly relates to a composite lightweight wallboard. Background Art

[0002] Improving the thermal insulation performance of building exterior walls is an important way to reduce building energy consumption. The fire resistance and thermal insulation performance of exterior wall materials are generally negatively correlated. A composite of two or more materials is often used to balance the fire resistance and thermal insulation performance of the exterior wall. One technical approach is to use inorganic materials on both sides to form a load-bearing layer that also serves as a fire-resistant protective layer, with a high-performance organic thermal insulation material filling the middle. Currently, the inorganic materials on both sides are mostly autoclaved aerated concrete strips, which are then punched and assembled with organic thermal insulation materials through rod-shaped connectors to form composite thermal insulation wall panels. However, this approach often has the following technical problems:

[0003] First, the post-drilling installation of rod-shaped connectors requires a lot of manual labor and is costly. In addition, to ensure smooth installation, there is a certain gap between the rod-shaped connector and the corresponding holes in the autoclaved aerated concrete strips, which makes it easy to shake under stress. The rod-shaped connector has a small diameter and a small contact area with the autoclaved aerated concrete. When stressed, the autoclaved aerated concrete is easily crushed, which is not conducive to the combined stress-bearing effect.

[0004] Second, in the case of post-drilling, the rod-shaped connector can only be installed perpendicular to the height direction of the composite insulation wall panel. Under the load perpendicular to the surface of the composite insulation wall panel, the rod-shaped connector has low efficiency in transmitting the shear force of the autoclaved aerated concrete strips on both sides;

[0005] Third, the autoclaved aerated concrete strips on both sides transmit force to the middle insulation layer through the adhesive. The adhesive has poor durability and loses its bonding effect after a certain number of years of use, affecting the mechanical performance of the composite insulation wall panel.

[0006] Fourth, rod-shaped connectors cannot transmit pressure. Organic insulation materials have a low compression modulus and are prone to volume shrinkage after a certain number of years of use. Therefore, rod-shaped connectors and organic insulation materials cannot effectively transmit the pressure required for the autoclaved aerated concrete slats on both sides to work together.

[0007] Fifth, considering factors such as installation gap, layout direction of rod-shaped connectors, adhesive failure and deterioration of insulation materials, the load-bearing performance of the autoclaved aerated concrete strips on both sides of the existing composite insulation wall panels is poor. Generally, only the autoclaved aerated concrete strips on one side are considered to bear the load perpendicular to the surface of the composite insulation wall panels, resulting in difficulty in reducing the overall thickness of the composite insulation wall panels, high cost, and large occupation of the building's usable area. Utility Model Content

[0008] In order to overcome the shortcomings of the above-mentioned prior art, the utility model proposes a composite lightweight wall panel, which can realize the one-time forming and combined force-bearing of the composite thermal insulation wall panel, avoiding one or more problems of the prior art such as the large amount of manual labor for post-assembly, the existence of installation gaps in rod-shaped connectors and the low force transmission efficiency of vertical installation, the inability to transmit force after the adhesive fails, the unreliable pressure transmission by relying on organic thermal insulation materials, the poor combined force-bearing performance, and the large overall thickness of the wall panel.

[0009] Some embodiments of the present invention provide a composite lightweight wall panel, which includes an outdoor lightweight panel, an intermediate insulation layer, and an indoor lightweight panel in sequence from the outdoor side to the indoor side of the building, wherein the outdoor lightweight panel and the indoor lightweight panel have a dry density between 500 and 900 kg / m 3 The lightweight concrete slab has stress-bearing steel bars arranged along the height direction of the composite lightweight wall panel on the side of the outdoor lightweight panel and the indoor lightweight panel away from the middle insulation layer; the outdoor lightweight panel and the indoor lightweight panel are connected and combined to bear stress through multiple independent collaborative working parts, the collaborative working parts have a wavy shape, the length direction of the collaborative working parts is parallel to the height direction of the composite lightweight wall panel, and the collaborative working parts are arranged in rows along the height direction of the composite lightweight wall panel. The collaborative working parts on the same row are separated by 400 to 1000 mm along the height direction of the composite lightweight wall panel, and the two sides of the collaborative working parts are respectively embedded in the outdoor lightweight panel and the indoor lightweight panel.

[0010] Specifically, the above-mentioned cooperative working parts are not less than two rows, and the cooperative working parts are distributed in the middle height range of the composite lightweight wall panel outside the height range of 500mm at the upper and lower ends of the composite lightweight wall panel.

[0011] Furthermore, the above-mentioned cooperative working parts are made of solid fiber reinforced composite materials or hollow steel pipes, the shape or outer diameter of the cooperative working parts is 15-30 mm, and the angle between the inclined rods of the wavy cooperative working parts and the height direction of the composite lightweight wallboard is 35-55°.

[0012] In particular, the hollow steel pipe is a stainless steel pipe or a carbon structural steel pipe with a surface wrapped with plastic, and both ends of the hollow steel pipe are sealed with foam or tape.

[0013] In some embodiments, both the outdoor lightweight panels and the indoor lightweight panels are made of foamed concrete, the compressive strength of the foamed concrete is 5 to 10 MPa, and the thickness of the outdoor lightweight panels and the indoor lightweight panels is between 60 and 150 mm.

[0014] Specifically, the above-mentioned intermediate insulation layer has slots at corresponding positions of the cooperative working parts, and the slots are filled with polyurethane foam after the cooperative working parts are passed through; along the width direction of the composite lightweight wall panel, one end of the intermediate insulation layer is retracted 10 to 20 mm from the ends of the outdoor lightweight board and the indoor lightweight board, and the other end protrudes 10 to 20 mm from the ends of the outdoor lightweight board and the indoor lightweight board.

[0015] Furthermore, a series of interface reinforcement grooves perpendicular to the height direction of the composite wall panel are opened on the outdoor surface of the outdoor lightweight board. The depth of the interface reinforcement grooves is 3 to 7 mm and the width is 5 to 20 mm. The spacing between adjacent interface reinforcement grooves along the height direction of the composite wall panel is 150 to 500 mm.

[0016] Optionally, hanging sleeves are embedded in the upper and lower ends of the composite lightweight wall panel within a height range of 80 to 150 mm. The hanging sleeves are made of nylon PA66 mixed with glass fiber. Threads are provided inside the hanging sleeves. The threaded end of the hanging sleeves is flush with the indoor surface of the indoor lightweight panel. A reinforced anchor plate is provided at the other end of the hanging sleeve. The reinforced anchor plate is embedded in the outdoor lightweight panel and is not less than 30 mm from the outdoor surface of the outdoor lightweight panel.

[0017] In some embodiments, the outdoor surface of the outdoor lightweight board and the indoor surface of the indoor lightweight board are composited with a stress-reinforced layer, the stress-reinforced layer has a thickness of 5 to 15 mm, and the stress-reinforced layer is made of fiber cement board or anti-cracking mortar; when the outdoor decorative surface is painted, the stress-reinforced layer is not pre-set within the range of 50 to 200 mm around the outdoor lightweight board, and after installation is completed, anti-cracking mortar is used to fill between adjacent composite lightweight wall panels.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] (1) In the present invention, the components connecting the lightweight panels on both sides of the composite lightweight wall panel are directly pre-buried in the lightweight panels on both sides during the production process. There is no gap between the components and the lightweight panels and the components can bear pressure and shear force. The components can work together with the lightweight panels on both sides to bear the load perpendicular to the surface of the lightweight panels. The force-bearing efficiency is high, and there is no need to rely solely on the lightweight panel on one side to bear the load perpendicular to the surface of the lightweight panel. The overall thickness of the composite lightweight wall panel is small, the cost is low, and the impact on the building's usable area is small.

[0020] (2) The utility model does not need to rely on adhesives to transmit shear force, and does not need to rely on thermal insulation materials to transmit pressure. The stress-bearing performance of the composite lightweight wall panel is not affected by the durability of the adhesive and thermal insulation materials, and the stress-bearing performance is stable and reliable.

[0021] (3) The composite lightweight wall panel of the utility model can realize the overall assembly of the lightweight panels on both sides and the thermal insulation material in one production process, without the need to apply adhesive, with low material cost, less manual work and high production efficiency.

[0022] (4) The lightweight panels on both sides of the utility model are formed by casting lightweight concrete. The width of the wall panels is not limited by the standard width of 600mm of autoclaved aerated concrete strips. The width of the wall panels can be adjusted according to the installation conditions and is generally 600 to 1500mm. The assembly of the exterior wall can be significantly reduced, the joint processing work on the construction site is less, and the risk of leakage is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 Schematic diagram of the three-dimensional structure of some embodiments of the composite lightweight wall panel of the present invention.

[0025] Figure 2 for Figure 1 Cross-sectional view of section AA.

[0026] Figure 3 for Figure 1 Cross-sectional view of the middle BB section.

[0027] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of collaborative workpieces.

[0028] Figure 5 for Figure 1 Schematic diagram of the structure of the collaborative working parts and the insulation board assembly.

[0029] Figure 6 Schematic diagram of the structure of some embodiments of the joints between composite lightweight wall panels of the present invention.

[0030] Figure 7 for Figure 1 Installation diagram of the middle hanging sleeve.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of some embodiments of the composite lightweight wall panel of the present invention, wherein the surface of the outdoor lightweight panel is provided with interface reinforcement grooves.

[0032] Figure 9 It is a schematic cross-sectional view of some embodiments of the composite lightweight wall panel of the present invention, wherein stress-bearing reinforcement layers are provided on the surfaces of the outdoor lightweight panel and the indoor lightweight panel.

[0033] Figure 10 for Figure 9 Schematic diagram of the structure of medium composite lightweight wall panels assembled on construction site.

[0034] Figure 11Schematic diagram of the three-dimensional structure of some embodiments of the mold for preparing the composite lightweight wall panel of the utility model.

[0035] In the figure: 1- outdoor lightweight plate; 11- stress-bearing steel bars; 12- structural steel bars; 13- interface reinforcement groove; 2- middle insulation layer; 21- slot; 3- indoor lightweight plate; 4- cooperative working part; 5- hanging sleeve; 51- thread; 52- reinforced anchor plate; 6- joint; 61- polyurethane foam; 7- stress-bearing reinforcement layer; 8- preparation mold; 81- bottom mold base; 82- height side panel; 83- end side panel; 84- thickness side panel. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, the embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0037] Unless otherwise specified, the technical and scientific terms used herein have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs; other experimental methods and technical means not specifically specified in this application refer to experimental methods and technical means commonly used by ordinary technicians in this field.

[0038] The utility model provides a composite lightweight wall panel for building exterior walls, which can realize one-time molding and combined force-bearing of composite thermal insulation wall panels, avoiding the shortcomings of the prior art such as large amount of manual labor for post-assembly, installation gaps in rod-shaped connectors, low force transmission efficiency during vertical installation, inability to transmit force after adhesive failure, unreliable pressure transmission by organic thermal insulation materials, poor combined force-bearing performance, and large overall thickness of the wall panels. Figures 1 to 3 The composite lightweight wall panel of the present invention comprises an outdoor lightweight board 1, an intermediate insulation layer 2 and an indoor lightweight board 3 from the outdoor side to the indoor side of the building, wherein the outdoor lightweight board 1 and the indoor lightweight board 3 have a dry density between 500 and 900 kg / m 3The lightweight concrete slab has a side where the outdoor lightweight slab 1 and the indoor lightweight slab 3 are away from the middle insulation layer 2 and are provided with stress-bearing steel bars 11 along the height direction of the composite lightweight wall panel; the outdoor lightweight slab 1 and the indoor lightweight slab 3 are connected and combined to bear stress through a plurality of independent collaborative working parts 4, and the shape of the collaborative working parts 4 is wavy, and the length direction of the collaborative working parts 4 is parallel to the height direction of the composite lightweight wall panel and is arranged in rows along the height direction of the composite lightweight wall panel. The collaborative working parts 4 on the same row are separated by 400 to 1000 mm along the height direction of the composite lightweight wall panel, and the two sides of the collaborative working parts 4 are respectively embedded in the outdoor lightweight slab 1 and the indoor lightweight slab 3.

[0039] In the description of the present invention, it should be noted that the terms "indoor" and "outdoor" refer to the actual positional relationship between indoors and outdoors in actual buildings, and the term "height direction" is based on the orientation or positional relationship in which the composite lightweight wall panels of the present invention are usually placed when in use. The above terms all restrict the orientation and structure of the composite lightweight wall panels of the present invention.

[0040] refer to Figures 1 to 7 , shows the structural schematic diagram of some embodiments of the composite lightweight wallboard of the utility model. Figures 1 to 3 As shown, the composite lightweight wall panel includes an outdoor lightweight panel 1, an intermediate insulation layer 2 and an indoor lightweight panel 3 from the outdoor side to the indoor side of the building, wherein the outdoor lightweight panel 1 and the indoor lightweight panel 3 both have a dry density between 500 and 900 kg / m 3 The lightweight concrete slab is used to control the deadweight of the composite lightweight wall panel. The outdoor lightweight panel 1 and the indoor lightweight panel 3 are connected and subjected to combined force through multiple independent cooperative working parts 4. Under the combined force, when the load perpendicular to the surface of the composite lightweight wall panel acts, the outdoor surface of the outdoor lightweight panel 1 and the indoor surface of the indoor lightweight panel 3 are pulled. On the side of the outdoor lightweight panel 1 and the indoor lightweight panel 3 away from the middle insulation layer 2, stress-bearing steel bars 11 along the height direction of the composite lightweight wall panel are arranged to participate in the tension. The stress-bearing steel bars 11 are tied together by the vertical structural steel bars 12 to form a steel mesh. Figure 1 、 Figure 2 、 Figure 4 As shown, the shape of the collaborative working piece 4 is wavy, the length direction of the collaborative working piece 4 is parallel to the height direction of the composite lightweight wall panel, and is arranged in a row along the height direction of the composite lightweight wall panel. The collaborative working pieces 4 on the same row are separated by 400 to 1000 mm along the height direction of the composite lightweight wall panel, and the two sides of the collaborative working piece 4 are respectively embedded in the outdoor lightweight panel 1 and the indoor lightweight panel 3.

[0041] The above-mentioned relevant content serves as an inventive point of the present utility model, thereby solving the technical problems 1, 4 and 5 mentioned in the background technology. The reasons why the existing technology leads to technical problems one, four and five are as follows: in the existing technology, a gap needs to be set between the hole and the rod-shaped connector to ensure smooth installation of the rod-shaped connector. Under the action of shear force, the rod-shaped connector can only contact the hole wall after tilting; when the existing technology uses post-punching to install the rod-shaped connector, both ends of the rod-shaped connector are exposed, and nuts are used to tighten the two ends of the rod-shaped connector, resulting in the rod-shaped connector only being able to bear force but not pressure, and relying on insulation materials to transmit pressure. The insulation material has a low compression modulus and is prone to volume shrinkage after a certain number of years of use. Neither the rod-shaped connector nor the insulation material can effectively transmit the pressure required for the combination of the two side strips to work, that is, a reliable pressure transmission path cannot be formed in the existing composite insulation wall panel; the installation gap and lack of a reliable pressure transmission path in the post-installed rod-shaped connector result in the rod-shaped connector being unable to effectively coordinate with the combination of the two side strips to bear force. Only the single side strip can be considered to bear the load perpendicular to the strip surface. The thickness of one side strip needs to be increased to ensure reliable force, resulting in the overall thickness of the composite insulation wall panel being difficult to reduce. The utility model directly embeds the cooperative working parts in the outdoor lightweight panels and the indoor lightweight panels. The cooperative working parts are reliably anchored and tightly embedded with the lightweight concrete panels on both sides. They can provide rigidity without deformation during the stress process and can effectively transmit tension, shear and pressure at the same time. There is no need to use insulation materials to transmit pressure. The force transmission path is clear and reliable. The outdoor lightweight panels and the indoor lightweight panels can form a good cooperative working effect and jointly resist the load perpendicular to the panel surface, reducing the overall thickness of the composite lightweight wall panel. Taking the heat transfer coefficient of 0.20W / (m in cold areas as an example, the heat transfer coefficient of 0.20W / (m in cold areas is 0.20W / (m 2 ·K) Taking the exterior wall of a building with a floor height of 4.9m as an example, when the existing autoclaved aerated concrete strips are used to punch and assemble the composite insulation wall panels, only the indoor side strips bear the out-of-plane load. The thicknesses of the outdoor side strips, the polyurethane insulation layer, and the indoor side strips are 100mm, 100mm, and 200mm respectively, and the overall wall thickness is 400mm. The use of the composite lightweight wall panels of the utility model can achieve efficient combined stress bearing of the outdoor side lightweight panels and the indoor side lightweight panels. When the outdoor side lightweight panels and the indoor side lightweight panels use foamed concrete with a compressive strength of 6MPa, the thickness of the outdoor side lightweight panels and the indoor side lightweight panels are both 100mm to meet the stress and fire protection requirements, and the thickness of the polyurethane insulation layer is 115mm to meet the insulation requirements. At this time, the overall wall thickness is 315mm, which can be reduced by 21.3% compared with the existing technology. The material cost is low, the building area is small, and the wall is light in weight and easy to install.

[0042] In some embodiments, when the combined force on the outdoor lightweight panels and the indoor lightweight panels is weak, there will be a certain degree of tension on the surfaces of the outdoor lightweight panels and the indoor lightweight panels close to the middle insulation layer. In order to control the tensile cracks of the lightweight concrete, stress-bearing steel bars can also be arranged near the surfaces of the outdoor lightweight panels and the indoor lightweight panels close to the middle insulation layer. Overall, the number of stress-bearing steel bars on the outdoor lightweight panels and the indoor lightweight panels close to the middle insulation layer is lower than the number of stress-bearing steel bars on the side of the outdoor lightweight panels and the indoor lightweight panels away from the middle insulation layer.

[0043] like Figure 1 As shown, no less than two rows of cooperative working parts 4 are arranged on each composite lightweight wall panel to avoid deformation and damage of the lightweight panels on both sides of the composite lightweight wall panel during transportation, installation and use; when applied to the exterior wall of the building, the height direction of the composite lightweight wall panel is generally parallel to the height direction of the building, and the upper and lower ends of the composite lightweight wall panel are connected to the main structure of the building. When the load is perpendicular to the surface of the composite lightweight wall panel, the bending moment in the middle range of the height direction of the composite lightweight wall panel is large, and there is a great demand for the outdoor lightweight panel and the indoor lightweight panel to be combined to increase the bearing capacity. The cooperative working parts are arranged in the middle range of the height direction of the composite lightweight wall panel, which has high force efficiency. At the same time, during use, the temperature difference between the outdoor lightweight panel and the indoor lightweight panel is large. When the stiffness of the cooperative working parts is too large, the shrinkage of the outdoor lightweight panel under the action of temperature will be constrained, resulting in cracking of the outdoor lightweight panel, affecting the exterior finishing effect and durability, and creating a risk of water leakage. Therefore, on the basis of ensuring that the combined force effect of the outdoor lightweight panel and the indoor lightweight panel meets the use requirements, the number and stiffness of the cooperative working parts should be controlled as much as possible, such as Figure 1 、 Figure 2 As shown, the collaborative working parts 4 are arranged in the middle height range of the composite lightweight wall panel outside the 500mm height range of the upper and lower ends of the composite lightweight wall panel, thereby improving the efficiency of the collaborative working parts 4 in coordinating the combined force of the outdoor lightweight panel 1 and the indoor lightweight panel 3, and at the same time reducing the number of collaborative working parts 4 to avoid cracking of the outdoor lightweight panel due to the constraint of the collaborative working parts 4 under the action of the temperature difference between indoor and outdoor.

[0044] In some embodiments, both the outdoor lightweight panels 1 and the indoor lightweight panels 3 are made of foamed concrete with a compressive strength of 5 to 10 MPa. The thickness of each panel ranges from 60 to 150 mm. Foamed concrete has the advantage of being able to be directly cast in a mold, facilitating the pre-embedding of the cooperating components 4. Alternatively, the outdoor lightweight panels 1 and the indoor lightweight panels 3 may be lightweight concrete panels such as ceramsite concrete hollow panels or foamed gypsum hollow panels.

[0045] In some embodiments, the collaborative working member 4 is made of solid fiber reinforced composite material or hollow steel pipe to reduce the adverse effect of the thermal bridge generated by the collaborative working member 4 on the thermal insulation performance of the composite lightweight wall panel. The shape or outer diameter of the collaborative working member 4 is 15 to 30 mm. The lightweight concrete panels used in the outdoor lightweight panel 1 and the indoor lightweight panel 3 are relatively low in strength. Limiting the shape or outer diameter of the collaborative working member 4 can avoid local damage to the lightweight concrete at the contact position between the collaborative working member 4 and the outdoor lightweight panel 1 and the indoor lightweight panel 3 due to extrusion; see Figure 2 The angle between the diagonal rods of the wavy cooperative member 4 and the height of the composite lightweight wall panel is 35-55 degrees. The diagonal arrangement of the diagonal rods of the cooperative member 4 converts the shear force generated by the combined forces of the outdoor lightweight panel 1 and the indoor lightweight panel 3 into pressure within the diagonal rods, and the compressive efficiency of the diagonal rods is higher than the shear efficiency. Furthermore, compared to continuous truss connectors, the cooperative members in this utility model are independently arranged wavy connectors. These are less rigid than continuous trusses, preventing cracking of the outdoor lightweight panels due to temperature differences.

[0046] The above-mentioned relevant content is an inventive point of the present invention, thereby solving the second technical problem mentioned in the background technology. The reasons why the existing technology leads to the second technical problem are as follows: the existing technology installs the rod-shaped connector after punching. Taking into account the convenience of punching, quality control and the fastening structure of the end of the rod-shaped connector, the rod-shaped connector can only be installed perpendicular to the height direction of the composite insulation wall panel. When the composite insulation wall panel is subjected to stress, it needs to rely on the rod-shaped connector to transmit shear force to achieve combined stress. The shear force is perpendicular to the rod-shaped connector. The efficiency of the rod-shaped connector in transmitting shear force is lower than the efficiency of transmitting pressure and tension. The present invention directly embeds the cooperative working parts in the outdoor lightweight panels and the indoor lightweight panels. The shape of the cooperative working parts is not restricted. The angle between the inclined rod of the wavy cooperative working parts and the height direction of the composite lightweight wall panel is 35 to 55 degrees. The shear force generated by the combined stress of the outdoor lightweight panels and the indoor lightweight panels can be converted into pressure or tension in the inclined rod. The compression and tension efficiency of the inclined rod is higher than the shear efficiency, thereby solving the problem of low force transmission efficiency in the existing technology.

[0047] In some embodiments, the hollow steel tubes used to make the collaborative working member 4 are made of stainless steel. The thermal conductivity of stainless steel is approximately 1 / 3 of that of ordinary steel. Using stainless steel tubes to make the collaborative working member 4 can further reduce the adverse effects of thermal bridges in the collaborative working member 4 on the thermal insulation performance of the composite lightweight wallboard. Considering the high cost of stainless steel, in some embodiments, carbon structural steel tubes can also be used to make the collaborative working member 4, and the surface of the carbon structural steel tubes can be coated with plastic to reduce the thermal conductivity of the collaborative working member 4. Considering that the thermal conductivity of lightweight concrete is greater than that of enclosed air, the ends of the hollow steel tubes are sealed with foam or tape to prevent lightweight concrete from entering the hollow steel tubes during the preparation of the composite lightweight wallboard. This measure creates an enclosed air space within the hollow steel tubes, significantly reducing the thermal conductivity of the collaborative working member 4.

[0048] refer to Figure 4 The shape of the cooperative working piece 4 is wavy and is made of solid fiber reinforced composite truss or hollow steel pipe bending. The number of diagonal rods of a single cooperative working piece 4 is calculated and determined according to the combined force requirements.

[0049] refer to Figure 5 In the process of preparing composite lightweight wall panels, the collaborative working piece 4 needs to pass through the intermediate insulation layer 2, and a slot 21 is opened on the intermediate insulation layer 2 at the corresponding position of the collaborative working piece 4. After the collaborative working piece 4 is inserted into the slot 21, the slot 21 is filled with polyurethane foam. The polyurethane foam can avoid the formation of thermal bridges due to the lightweight concrete filled in the slot 21 during the preparation of the composite lightweight wall panels. At the same time, the polyurethane foam can also fix the position of the collaborative working piece 4, thereby preventing the collaborative working piece 4 from shifting and affecting the anchoring performance of the collaborative working piece 4 in the lightweight concrete board.

[0050] Considering the transportation, hoisting and installation, the width of composite lightweight wall panels is generally 600 ~ 1500mm. At the construction site, multiple composite lightweight wall panels need to be assembled to form the building exterior wall. That is to say, there are multiple joints between composite lightweight wall panels on the exterior wall. In order to improve the waterproof performance of the joints, reference Figure 3 Along the width direction of the composite lightweight wall panel, one end of the middle insulation layer 2 is 10 to 20 mm inward from the end of the outdoor lightweight board 1 and the indoor lightweight board 3, and the other end is 10 to 20 mm protruding from the end of the outdoor lightweight board 1 and the indoor lightweight board 3. Figure 6 At the joint 6 between adjacent composite lightweight wall panels, polyurethane foam glue 61 is coated on the side of the intermediate insulation layer 2 protruding from the end of one composite lightweight wall panel, and then inserted into the groove of the intermediate insulation layer 2 corresponding to the other composite lightweight wall panel, thereby forming a broken line waterproof structure at the joint 6 position, thereby improving the waterproof performance of the joint 6 by extending the path for outdoor rainwater to enter the room.

[0051] Generally speaking, in actual use, the upper and lower ends of the composite lightweight wall panels are connected to the main structure of the building, such as Figure 1 、 Figure 2 and Figure 7 As shown, hanging sleeves 5 are embedded within the upper and lower ends of the composite lightweight wall panels within a height range of 80 to 150 mm. These sleeves are internally threaded with threads 51. Metal bolts are screwed into these sleeves 5 at the construction site to connect the composite lightweight wall panels to the main building structure. The threaded ends of the hanging sleeves 5 are flush with the indoor surface of the indoor lightweight panel 3. A reinforcing anchor plate 52 is provided at the other end of the hanging sleeves 5. The reinforcing anchor plate 52 is embedded within the outdoor lightweight panel 1 at a distance of no less than 30 mm from the outdoor surface of the outdoor lightweight panel 1. The hanging sleeves 5 pass through the intermediate insulation layer 2, which can easily form thermal bridges at the location of the hanging sleeves 5. Specifically, the hanging sleeves 5 are made of nylon PA66 mixed with glass fiber to reduce their thermal conductivity and prevent the formation of thermal bridges that weaken the insulation performance of the composite lightweight wall panels. The hanging sleeve 5 is embedded in the preparation process of the composite lightweight wall panel. The use of the hanging sleeve 5 in conjunction with the metal bolts not only ensures the bearing capacity of the connection node between the composite lightweight wall panel and the main structure of the building, but also avoids local thermal bridges through the nylon PA66 material.

[0052] The construction site generally needs to carry out building facade construction on the surface of the lightweight board outside the composite lightweight wall panel. The lightweight concrete used in the composite lightweight wall panel has a large water absorption rate and the overall flatness after assembling multiple composite lightweight wall panels is difficult to meet the facade effect requirements. It is necessary to apply waterproof mortar on the surface of the lightweight board outside the composite lightweight wall panel to level it. In order to improve the bonding performance of the waterproof mortar leveling layer and the composite lightweight wall panel and avoid safety accidents caused by the falling off of the waterproof mortar leveling layer, in some embodiments, reference Figure 8 A series of interface reinforcement grooves 13 are formed on the exterior surface of the lightweight panel 1, perpendicular to the height of the composite wallboard. The depth of these grooves is controlled to 3 to 7 mm to ensure adhesion without affecting the arrangement of the reinforcement bars. The width of these grooves is 5 to 20 mm, and the spacing between adjacent grooves along the height of the composite wallboard is 150 to 500 mm. During the application of waterproof mortar to the construction site, the mortar is embedded in the interface reinforcement grooves 13 to form a series of interlocking keyways, improving the adhesion between the waterproof mortar screed and the composite lightweight wallboard, preventing the mortar screed from falling off and increasing the service life of the building facade.

[0053] Under the action of wind pressure or wind suction, during the combined stress process of the outdoor lightweight panel 1 and the indoor lightweight panel 3 of the composite lightweight wall panel, the outdoor side of the outdoor lightweight panel 1 and the indoor side of the indoor lightweight panel 3 will generate large compressive stress, while the compressive strength of lightweight concrete is low. When the compressive strength of lightweight concrete is less than the edge compressive stress of the outdoor side of the outdoor lightweight panel 1 and the indoor side of the indoor lightweight panel 3, the local compressive failure of lightweight concrete will affect the overall stress performance of the composite lightweight wall panel. In some embodiments, such as Figure 9 As shown, considering that the areas with larger compressive stress are concentrated on the outdoor side of the outdoor lightweight board 1 and the indoor side of the indoor lightweight board 3, a composite stress-reinforced layer 7 is provided on the outdoor surface of the outdoor lightweight board 1 and the indoor surface of the indoor lightweight board 3. The stress-reinforced layer 7 has a thickness of 5 to 15 mm. The stress-reinforced layer 7 is made of fiber cement board or anti-cracking mortar. The compressive strength of fiber cement board or anti-cracking mortar is generally 20 to 30 MPa, which is significantly greater than the compressive strength of lightweight concrete. The stress-reinforced layer 7 will greatly improve the compressive resistance of the outdoor lightweight board 1 and the indoor side of the indoor lightweight board 3, and improve the overall bearing capacity of the composite lightweight wall panel. At the same time, the thickness of the stress-reinforced layer 7 is controlled to 5 to 15 mm to avoid excessive self-weight of the composite lightweight wall panel. After assembly at the construction site, the stress-reinforced layer 7 can also serve as an exterior wall waterproofing layer and an interior decoration base layer.

[0054] In particular, in some embodiments, the outdoor decorative surface is painted, and the flatness of the assembled composite lightweight wall panels is required to be high, such as Figure 10 As shown, at this time, the stress-reinforced layer 7 is not pre-arranged within the range of 50 to 200 mm around the outdoor lightweight board 1, that is, the stress-reinforced layer 7 is distributed in the middle range of the outdoor lightweight board 1. After the installation is completed, anti-cracking mortar is used to fill and level between adjacent composite lightweight wall panels to avoid overall leveling of the outdoor lightweight board 1 and reduce the leveling workload on the construction site; at the same time, alkali-resistant glass fiber mesh cloth can be laid near the joint 6 to improve the crack resistance of the anti-cracking mortar leveling layer near the joint 6.

[0055] refer to Figure 11The preparation mold 8 of the composite lightweight wall panel is composed of a bottom mold base 81, a height side panel 82, an end side panel 83 and a thickness side panel 84. The height side panel 82, the end side panel 83 and the thickness side panel 84 are vertically fixed on the bottom mold base 81 along the width direction of the composite lightweight wall panel. The width of the thickness side panel 84 is the same as the overall thickness of the composite lightweight wall panel. The thickness side panel 84 is placed between the two height side panels 82. By adjusting the position of the thickness side panel 84 between the same group of height side panels 82, the preparation of at least one composite lightweight wall panel of different heights can be achieved, making full use of the space of the height side panel 82. The width of the end side panel 83 is larger. It is used for repeated use in the production of composite lightweight wall panels of different thicknesses; the intermediate insulation layer 2 is assembled into one with the steel bars and the cooperative working parts 4, and the intermediate insulation layer 2 is placed between the side walls 82 of the same height. The intermediate insulation layer 2 is placed vertically in the width direction, and after the intermediate insulation layer 2 is fixed, the lightweight concrete slabs on both sides are poured to realize the one-time forming of the outdoor lightweight panel 1 and the indoor lightweight panel 3 of the composite lightweight wall panel and the synchronous pre-embedding of the cooperative working parts 4. The intermediate insulation layer 2 is preferably made of a complete insulation board to avoid displacement during the pouring of lightweight concrete. At the same time, a weight can be arranged at the upper opening of the preparation mold 8 to improve the compressive strength of the lightweight concrete.

[0056] The above-mentioned relevant content serves as an inventive point of the present invention, thereby solving the technical problem three mentioned in the background technology. The reasons why the prior art leads to the technical problem three are as follows: the prior art assembles the strips and the thermal insulation material into a whole after the strips are formed. In order to ensure that the strips are tightly bonded to the thermal insulation material and to transmit pressure and a certain proportion of shear force with the help of the thermal insulation material, an adhesive needs to be coated on the thermal insulation material. The adhesive is generally an organic material with poor durability and cannot achieve the same lifespan as the building. The utility model places the middle thermal insulation layer in the mold before pouring the lightweight concrete, and the lightweight concrete is directly formed on both sides of the middle thermal insulation layer. There is no need to use an adhesive to achieve the combination of the outdoor lightweight board, the indoor lightweight board and the middle thermal insulation layer. The bonding performance between the three can achieve the same lifespan as the thermal insulation material, and there is no durability problem.

[0057] In summary, in the present invention, the one-time production and forming of composite lightweight wall panels is realized through the selection of lightweight concrete materials, avoiding the disadvantage of large amount of manual labor in post-assembly; through the synchronous pre-embedding, direction optimization, layout optimization and material selection of collaborative working parts, efficient combined force of lightweight concrete panels on both sides of the composite lightweight wall panels is achieved, which greatly reduces the overall thickness of the composite insulation wall panels, reduces the adverse effects of collaborative working parts on the insulation performance of the composite lightweight wall panels, and avoids the cracking problem of the outdoor lightweight panels under the action of temperature caused by combined force; through the optimization of preparation molds, the preparation of composite lightweight wall panels of different thicknesses and different heights using a common mold is realized, reducing the mold cost.

[0058] The above descriptions are merely some preferred embodiments of the present invention and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the embodiments of the present invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present invention.

Claims

1. Composite lightweight wall panels, which include outdoor lightweight panels, intermediate insulation layers and indoor lightweight panels from the outdoor side to the indoor side of the building, and are characterized by: The outdoor lightweight panels and indoor lightweight panels have a dry density between 500 and 900 kg / m 3 The lightweight concrete slab has stress-bearing steel bars arranged along the height direction of the composite lightweight wall panel on the side of the outdoor lightweight panel and the indoor lightweight panel away from the middle insulation layer; the outdoor lightweight panel and the indoor lightweight panel are connected and combined to bear stress through a plurality of independent cooperative working pieces, the appearance of the cooperative working pieces is wavy, the length direction of the cooperative working pieces is parallel to the height direction of the composite lightweight wall panel, and they are arranged in rows along the height direction of the composite lightweight wall panel, the cooperative working pieces on the same row are separated by 400 to 1000 mm along the height direction of the composite lightweight wall panel, and the two sides of the cooperative working pieces are respectively embedded in the outdoor lightweight panel and the indoor lightweight panel.

2. The composite lightweight wallboard according to claim 1, characterized in that: The cooperative working parts are arranged in no less than two rows, and the cooperative working parts are distributed in the middle height range of the composite lightweight wall panel outside the height range of 500mm at the upper and lower ends of the composite lightweight wall panel.

3. The composite lightweight wallboard according to claim 1, characterized in that: The cooperative working piece is made of solid fiber reinforced composite material or hollow steel pipe, the shape or outer diameter of the cooperative working piece is 15-30 mm, and the angle between the inclined rod of the wave-shaped cooperative working piece and the height direction of the composite lightweight wallboard is 35-55 degrees.

4. The composite lightweight wallboard according to claim 3, characterized in that: The hollow steel pipe is a stainless steel pipe or a carbon structural steel pipe with plastic wrapped on the surface, and both ends of the hollow steel pipe are sealed with foam glue or tape.

5. The composite lightweight wallboard according to claim 1, characterized in that: The outdoor lightweight board and the indoor lightweight board are both made of foamed concrete, the compressive strength of the foamed concrete is 5-10 MPa, and the thickness of the outdoor lightweight board and the indoor lightweight board is between 60 and 150 mm.

6. The composite lightweight wallboard according to claim 1, characterized in that: The middle insulation layer has slots at corresponding positions of the cooperative working parts, and the slots are filled with polyurethane foam after the cooperative working parts are inserted; along the width direction of the composite lightweight wall panel, one end of the middle insulation layer is 10 to 20 mm inward compared with the ends of the outdoor lightweight board and the indoor lightweight board, and the other end protrudes 10 to 20 mm compared with the ends of the outdoor lightweight board and the indoor lightweight board.

7. The composite lightweight wallboard according to claim 1, characterized in that: The outdoor surface of the outdoor lightweight board is provided with a series of interface reinforcement grooves perpendicular to the height direction of the composite wallboard, the depth of the interface reinforcement grooves is 3-7mm, the width is 5-20mm, and the spacing between adjacent interface reinforcement grooves along the height direction of the composite wallboard is 150-500mm.

8. The composite lightweight wallboard according to claim 1, characterized in that: The composite lightweight wall panel is pre-embedded with hanging sleeves within a height range of 80 to 150 mm at the upper and lower ends. The hanging sleeves are made of nylon PA66 mixed with glass fiber. A thread is arranged inside the hanging sleeve. The threaded end of the hanging sleeve is flush with the indoor surface of the indoor lightweight panel. A reinforced anchor plate is arranged at the other end of the hanging sleeve. The reinforced anchor plate is pre-embedded in the outdoor lightweight panel and the distance from the outdoor surface of the outdoor lightweight panel is not less than 30 mm.

9. The composite lightweight wallboard according to claim 1, characterized in that: The outdoor surface of the outdoor lightweight board and the indoor surface of the indoor lightweight board are composited with a stress-reinforced layer, the thickness of the stress-reinforced layer is 5 to 15 mm, and the stress-reinforced layer is made of fiber cement board or anti-cracking mortar; when the outdoor decorative surface is painted, the stress-reinforced layer is not pre-arranged within a range of 50 to 200 mm around the outdoor lightweight board, and after the installation is completed, the anti-cracking mortar is used to fill the gaps between adjacent composite lightweight wall panels.

Images