Fabricated light aggregate fiber concrete sandwich heat preservation composite wall of frame structure

Abstract

A prefabricated lightweight aggregate fiber concrete sandwich insulated composite wall with a frame structure is disclosed. The composite wall consists of prefabricated lightweight aggregate fiber concrete sandwich insulated composite wall panels connected to the frame structure to form an integral whole. The top and bottom ends of the prefabricated lightweight sandwich insulated composite wall are connected to the crossbeams via sliding energy-dissipating nodes. Limiting devices are provided between the left and right sides of the prefabricated lightweight sandwich insulated composite wall and the frame columns, and filling material is also adhered between the left and right sides of the prefabricated lightweight sandwich insulated composite wall and the frame columns. The lightweight aggregate fiber concrete uses fine ceramsite as coarse aggregate to reduce the weight of the wall and decrease seismic forces. The addition of polypropylene fibers to the formula improves the ductility and crack resistance of the concrete. This invention features fire resistance, thermal insulation, earthquake resistance, and convenient connection, effectively improving the seismic performance and thermal insulation performance of buildings in high seismic intensity and cold regions, while reducing construction difficulty.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building technology in high seismic intensity areas and frigid regions, specifically relating to a prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with a frame structure. Background Technology

[0002] Many areas in northern China are simultaneously located in high-seismic-intensity zones and frigid climates. The development of prefabricated buildings faces two crucial requirements: energy efficiency, thermal insulation, and high-performance earthquake resistance. Composite wall panels integrating structural insulation and their connection technology with frame structures have attracted widespread attention. However, traditional composite wall panels suffer from several drawbacks. The heavy weight of ordinary concrete used in their construction amplifies seismic forces, and the rigid connection to the main structure increases structural stiffness, leading to reduced structural ductility. Furthermore, due to temperature differences between indoors and outdoors, the inner and outer wall panels deform to varying degrees under temperature stress, potentially causing cracking.

[0003] Patent application CN111549901B discloses a high-ductility concrete sliding infill wall frame structure and its construction method. This invention changes the brittle failure mode of ordinary infill wall frame structures, improves the deformation and energy dissipation capacity of the infill wall, and solves the problem of poor seismic performance of ordinary infill wall frame structures. The high-ductility concrete sliding infill wall frame structure of this invention consists of frame columns, frame beams, infill walls, horizontal joints, and a high-ductility concrete surface layer. During construction, the infill walls are first built, and then high-ductility concrete is evenly applied to the surface of the infill walls. Horizontal joints are reserved in the surface layer and are located at the horizontal mortar joints of the infill walls. The deformation and energy dissipation capacity of the high-ductility concrete sliding infill wall frame structure of this invention are significantly better than those of traditional infill wall frames, realizing a sliding energy dissipation mechanism. However, the wall itself has insufficient resistance to damage under strong earthquake loads, and the wall's restraint performance is not considered, making it prone to out-of-plane instability. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a prefabricated lightweight aggregate fiber concrete sandwich insulated composite wall with a frame structure. The prefabricated lightweight aggregate fiber concrete sandwich insulated composite wall panel is connected to the frame structure to form an integral whole. Under frequent earthquakes, it possesses high lateral stiffness, and the entire structure remains elastic, relying on its own seismic resistance. Under the design earthquake action, the extruded polystyrene foam board between the frame and the prefabricated lightweight sandwich insulated composite wall is compressed and deformed, providing space for the sandwich insulated composite wall to slide. Within a certain range, the sliding dissipates energy, but does not... While impacting overall structural safety, the prefabricated lightweight sandwich insulated composite walls can be removed and replaced after an earthquake. Furthermore, the extruded polystyrene foam board filling material can delay stress concentration at joints, effectively reducing the possibility of damage. Under rare earthquake conditions, the structure experiences significant horizontal displacement, and the prefabricated lightweight sandwich insulated composite walls may be damaged. However, the prefabricated lightweight sandwich insulated composite walls have stronger ductility due to the addition of polypropylene fibers, and the wire mesh restraint wall can absorb energy from wall damage without collapse, ensuring a gradual degradation of structural stiffness and preventing out-of-plane instability of the walls. Prefabricated structures simplify construction procedures and save manpower and resources.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with a frame structure includes a beam 6, a frame column 5, and a prefabricated lightweight sandwich insulation composite wall panel 1 disposed between the beam 6 and the frame column 5. The top and bottom ends of the prefabricated lightweight sandwich insulation composite wall panel 1 are connected to the beam 6 through sliding energy dissipation nodes 2, respectively. Limiting devices 4 are provided between the left and right sides of the prefabricated lightweight sandwich insulation composite wall panel 1 and the frame column 5, and filling material 3 is also pasted between the left and right sides of the prefabricated lightweight sandwich insulation composite wall panel 1 and the frame column 5.

[0007] The prefabricated lightweight sandwich insulated composite wall panel 1 includes an inner leaf wall 1-2 and an outer leaf wall 1-1. A double-sided steel wire mesh insulation board 1-4 is provided between the inner leaf wall 1-2 and the outer leaf wall 1-1. Molded polystyrene boards 1-3 are provided on both sides of the double-sided steel wire mesh insulation board 1-4. A joint filler 1-8 is reserved at the bottom of the molded polystyrene board 1-3. A reserved hole 1-7 is provided near the bottom of the inner leaf wall 1-2. The reserved hole 1-7 is connected to the joint filler 1-8. The joint filler material 7 is injected into the joint filler 1-8 through the reserved hole 1-7.

[0008] The double-sided wire mesh insulation board 1-4 has tie wires 1-5 between the wire mesh on both sides; the wire mesh is made of high-strength steel wire mesh, the mesh diameter is 40mm×40mm-60mm×60mm, and the diameter of the tie wire is not less than 4mm.

[0009] The filling material 3 is extruded polystyrene foam board, and the caulking material 7 is polyurethane foam.

[0010] The sliding energy dissipation node 2 adopts an L-shaped steel plate 2-1. One side of the L-shaped steel plate 2-1 is fixedly connected to the crossbeam 6 by bolts. The other side of the L-shaped steel plate 2-1 is provided with a strip hole 2-2. One end of the L-shaped tie member 1-6 passes vertically through the double-sided steel wire mesh insulation board 1-4, the inner leaf wall 1-2 and the strip hole 2-2 of the L-shaped steel plate from the outer leaf wall 1-1 in sequence, and is fixed by a gasket and nut. The other end of the L-shaped tie member 1-6 is wrapped with insulation material 1-9 and embedded in the wall body of the outer leaf wall 1-1.

[0011] The diameter of the L-shaped tie members 1-6 is between 10mm and 16mm.

[0012] The limiting device 4 includes a connecting block 4-4, which has a screw hole 4-3. Bolts pass through the screw hole 4-3 to connect the inner leaf wall 1-2 to the limiting device. The connecting block 4-4 also has a T-shaped limiting plate 4-1. The bottom end of the T-shaped limiting plate 4-1 is connected to the top end of the connecting block 4-4 by a weld 4-2. The T-shaped arm of the T-shaped limiting plate 4-1 abuts against the frame column 5.

[0013] The inner leaf wall 1-2 and the outer leaf wall 1-1 are made of lightweight aggregate fiber concrete. The lightweight aggregate fiber concrete has a strength grade of LC20, a water-cement ratio of 0.50, and a volumetric sand ratio of 36.3% to 39.3%. The standard mix proportion per cubic meter of concrete includes 162 to 168 kg of water, 275 to 285 kg of cement, 49.1 to 50.9 kg of fly ash, 440 to 460 kg of fine ceramsite, 445 to 485 kg of river sand, 220 to 260 kg of desert sand, 6.12 kg of water-reducing agent, and 15 to 16 kg of polypropylene fiber.

[0014] The inner leaf wall 1-2 and the outer leaf wall 1-1 are made of lightweight aggregate fiber concrete. The lightweight aggregate fiber concrete has a strength grade of LC25, a water-cement ratio of 0.45, and a volumetric sand ratio of 42.9% to 46.6%. The standard mix proportion per cubic meter of concrete includes 161.9 to 167.5 kg of water, 291 to 301 kg of cement, 68.8 to 71.2 kg of fly ash, 390 to 430 kg of fine ceramsite, 530 to 570 kg of river sand, 260 to 300 kg of desert sand, 6.8 kg of water-reducing agent, and 15.7 kg of polypropylene fiber.

[0015] The cement is 42.5R ordinary Portland cement; the fly ash is Grade I fly ash; the density grade of shale ceramsite is 600, and the particle size is 5-10mm; the water reduction rate of the water-reducing agent is 25%.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The composite wall of this invention uses prefabricated lightweight aggregate fiber reinforced concrete sandwich insulated composite wall panels connected to a frame structure to form an integral whole. Under frequent earthquakes, it has greater lateral stiffness, and the entire structure remains elastic. If the weld of the limiting device fails, the deformation capacity of the frame will be greater than that of the prefabricated lightweight sandwich insulated composite wall.

[0018] 2. The weld length in the limiting device can be adjusted according to the properties of the wall and the seismic requirements of different regions to ensure that the limiting device can provide sufficient rigidity under frequent earthquakes and can also be damaged under the design earthquake, providing space for the wall to slide and dissipate energy.

[0019] 3. Under the design earthquake action, the weld of the limiting device is damaged. The deformation capacity of the frame is greater than that of the prefabricated lightweight sandwich insulated composite wall. The extruded polystyrene foam board between the frame and the prefabricated lightweight sandwich insulated composite wall is squeezed and deformed, providing space for the sandwich insulated composite wall to slide. In addition, the extruded polystyrene foam board can delay the stress concentration at the connection and effectively reduce the possibility of failure.

[0020] 4. The prefabricated lightweight sandwich insulated composite wall can slide and dissipate energy within a certain range through energy dissipation connection nodes without affecting the overall structural safety. It has good energy dissipation performance and can be removed and replaced after an earthquake.

[0021] 5. Under rare earthquake conditions, the structure undergoes significant horizontal displacement, and the prefabricated lightweight sandwich insulated composite wall is damaged. However, the prefabricated lightweight sandwich insulated composite wall has stronger ductility due to the addition of polypropylene fibers, and the wire mesh restraint wall can absorb energy from wall damage without collapse, ensuring a gradual degradation of structural stiffness and avoiding out-of-plane instability of the wall.

[0022] 6. Self-developed lightweight aggregate fiber concrete uses fine expanded clay aggregate as coarse aggregate to reduce the weight of the wall. Its density is about 1700 kg / m3, which is 65.3%-70.8% of that of ordinary concrete. Therefore, it has a lighter weight for the same volume, which can reduce the load on the building and effectively reduce seismic forces. In addition, the addition of polypropylene fibers to the formula can make the concrete have better ductility and crack resistance, making it suitable for use in areas with high seismic intensity and climates with large temperature differences.

[0023] 7. The connection between the L-shaped tie rod 1-6 and the outer leaf wall 1-1 is wrapped with thermal insulation material, achieving integrated structural insulation and avoiding thermal bridging effects. The inner and outer leaf walls in this invention are made of lightweight concrete, which effectively reduces the wall's self-weight and the stress on the connectors. Lightweight concrete also has good thermal insulation and sound insulation properties. This avoids the problems of traditional composite wall panels, where the large self-weight of ordinary concrete increases seismic forces, and the rigid connection to the main structure increases structural stiffness, leading to reduced structural ductility. Furthermore, it avoids the deformation of the inner and outer leaf walls under temperature stress due to indoor and outdoor temperature differences, resulting in wall surface cracking. Therefore, this invention is more suitable for areas with high seismic intensity and extremely cold regions.

[0024] In summary, the present invention, which uses factory-prefabricated walls and dry-connection installation on-site, features fire resistance, thermal insulation, earthquake resistance, and convenient connection. It can effectively improve the earthquake resistance and thermal insulation performance of buildings in high seismic intensity and frigid regions, and reduce construction difficulty. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 Partial exploded view of the structure of the present invention.

[0027] Figure 3 This is a schematic diagram showing the connection between the prefabricated lightweight sandwich insulated composite wall panel 1 and the crossbeam 6 of the present invention.

[0028] Figure 4 This is a schematic diagram (a) of the limiting device 4 of the present invention.

[0029] Figure 5 This is a schematic diagram (II) of the limiting device 4 of the present invention.

[0030] Figure 6 This is a schematic diagram of the energy-consuming connection node 2 of the present invention.

[0031] Figure 7 This is a schematic diagram of the installation and connection between the energy-consuming connection node 2 and the crossbeam 6 of the present invention.

[0032] Figure 8 This is a detailed drawing of the construction method at the junction of the frame column 5 and the prefabricated lightweight sandwich insulated composite wall panel 1 according to the present invention.

[0033] Figure 9 This is a detailed drawing of the construction method at the junction of the crossbeam 6 and the prefabricated lightweight sandwich insulated composite wall panel 1 according to the present invention.

[0034] In the diagram: 1. Precast lightweight sandwich insulated composite wall panel; 1-1. Outer leaf wall; 1-2. Inner leaf wall; 1-3. Molded polystyrene board; 1-4. Double-sided steel wire mesh insulation board; 1-5. Tie wire; 1-6. L-shaped tie piece; 1-7. Reserved hole; 1-8. Joint sealant; 1-9. Insulation material; 2. Sliding energy dissipation node; 2-1. L-shaped steel plate; 2-2. Strip hole; 3. Filling material; 4. Limiting device; 4-1. T-shaped limiting plate; 4-2. Weld; 4-3. Screw hole; 4-4. Connecting block; 5. Frame column; 6. Beam; 7. Filling material. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] See Figures 1 to 3 A prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall structure suitable for frame structures includes a beam 6 and a frame column 5, and a prefabricated lightweight sandwich insulation composite wall panel 1 disposed between the beam 6 and the frame column 5. The top and bottom ends of the prefabricated lightweight sandwich insulation composite wall panel 1 are respectively connected to the beam 6 through sliding energy dissipation nodes 2. Limiting devices 4 are provided between the left and right sides of the prefabricated lightweight sandwich insulation composite wall panel 1 and the frame column 5, and filling material 3 is also pasted between the left and right sides of the prefabricated lightweight sandwich insulation composite wall panel 1 and the frame column 5.

[0037] The prefabricated lightweight sandwich insulated composite wall panel 1 includes an inner leaf wall 1-2 and an outer leaf wall 1-1. A double-sided steel wire mesh insulation board 1-4 is provided between the inner leaf wall 1-2 and the outer leaf wall 1-1. Molded polystyrene boards 1-3 are provided on both sides of the double-sided steel wire mesh insulation board 1-4. A joint filler 1-8 is reserved at the bottom of the molded polystyrene board 1-3. A reserved hole 1-7 is provided near the bottom of the inner leaf wall 1-2. The reserved hole 1-7 is connected to the joint filler 1-8. The joint filler material 7 is injected into the joint filler 1-8 through the reserved hole 1-7.

[0038] The double-sided wire mesh insulation board 1-4 has tie wires 1-5 between the wire mesh on both sides; the wire mesh is made of high-strength steel wire mesh, the mesh diameter is 40mm×40mm-60mm×60mm, and the diameter of the tie wire is not less than 4mm.

[0039] The filling material 3 is extruded polystyrene foam board, and the caulking material 7 is polyurethane foam.

[0040] See Figure 6 , Figure 7The sliding energy dissipation node 2 adopts an L-shaped steel plate 2-1. One side of the L-shaped steel plate 2-1 is fixedly connected to the crossbeam 6 by bolts. The other side of the L-shaped steel plate 2-1 is provided with a strip hole 2-2. One end of the L-shaped tie member 1-6 passes vertically from the outer leaf wall 1-1 through the double-sided steel wire mesh insulation board 1-4, the inner leaf wall 1-2 and the strip hole 2-2 of the L-shaped steel plate, and is fixed by a gasket and nut. The other end of the L-shaped tie member 1-6 is wrapped with insulation material 1-9 and embedded in the wall body of the outer leaf wall 1-1.

[0041] The diameter of the L-shaped tie members 1-6 is between 10mm and 16mm.

[0042] See Figure 4 , Figure 5 The limiting device 4 includes a connecting block 4-4, which has a screw hole 4-3. Bolts pass through the screw hole 4-3 to connect the inner leaf wall 1-2 to the limiting device. The connecting block 4-4 also has a T-shaped limiting plate 4-1. The bottom end of the T-shaped limiting plate 4-1 is connected to the top end of the connecting block 4-4 by a weld 4-2. The T-shaped arm of the T-shaped limiting plate 4-1 abuts against the frame column 5.

[0043] The inner leaf wall 1-2 and the outer leaf wall 1-1 are made of lightweight aggregate fiber concrete. The lightweight aggregate fiber concrete has a strength grade of LC20, a water-cement ratio of 0.50, and a volumetric sand ratio of 36.3% to 39.3%. The standard mix proportion per cubic meter of concrete includes 162 to 168 kg of water, 275 to 285 kg of cement, 49.1 to 50.9 kg of fly ash, 440 to 460 kg of fine ceramsite, 445 to 485 kg of river sand, 220 to 260 kg of desert sand, 6.12 kg of water-reducing agent, and 15 to 16 kg of polypropylene fiber.

[0044] The inner leaf wall 1-2 and the outer leaf wall 1-1 are made of lightweight aggregate fiber concrete. The lightweight aggregate fiber concrete has a strength grade of LC25, a water-cement ratio of 0.45, and a volumetric sand ratio of 42.9% to 46.6%. The standard mix proportion per cubic meter of concrete includes 161.9 to 167.5 kg of water, 291 to 301 kg of cement, 68.8 to 71.2 kg of fly ash, 390 to 430 kg of fine ceramsite, 530 to 570 kg of river sand, 260 to 300 kg of desert sand, 6.8 kg of water-reducing agent, and 15.7 kg of polypropylene fiber.

[0045] For detailed drawings of the construction process at the junction of frame column 5, beam 6 and precast lightweight sandwich insulated composite wall panel 1, please refer to [the original text]. Figure 8 , Figure 9The specific construction method is as follows: the upper part of the prefabricated lightweight sandwich insulated composite wall panel 1 is separated from the beam 6 by a filling material 3; the lower part of the prefabricated lightweight sandwich insulated composite wall panel 1 is separated from the beam 6 by a filling material 7 and a joint sealant 1-8 is injected as a joint sealant and insulation material; the prefabricated lightweight sandwich insulated composite wall panel 1 and the beam 6 are connected by a sliding energy dissipation node 2; the prefabricated lightweight sandwich insulated composite wall panel 1 and the frame column 5 are separated by a filling material 3; the surfaces of the inner leaf wall 1-1 and the outer leaf wall 1-2 are both coated with a finishing layer.

[0046] Example 1

[0047] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC20. The concrete composition includes 165 kg of water, 280 kg of cement, 50 kg of fly ash, 454.9 kg of fine ceramsite, 468.6 kg of river sand, 240.3 kg of desert sand, 6.12 kg of water-reducing agent, and 15.3 kg of polypropylene fiber. The 28-day compressive strength is 24.3 MPa.

[0048] Example 2

[0049] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC20. The concrete composition is as follows: water 162kg, cement 275kg, fly ash 49.1kg, fine ceramsite 460kg, river sand 445kg, desert sand 227.8kg, water-reducing agent 6.12kg, polypropylene fiber 15.3kg, and 28-day compressive strength 23.6MPa.

[0050] Example 3

[0051] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC20. The concrete composition includes 168 kg of water, 285 kg of cement, 50.9 kg of fly ash, 454.9 kg of fine ceramsite, 480 kg of river sand, 248.3 kg of desert sand, 6.12 kg of water-reducing agent, and 15.3 kg of polypropylene fiber. The 28-day compressive strength is 23.2 MPa.

[0052] Example 4

[0053] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC25. The concrete composition includes 165 kg of water, 296 kg of cement, 70 kg of fly ash, 410.4 kg of fine ceramsite, 552.8 kg of river sand, 280.8 kg of desert sand, 6.8 kg of water-reducing agent, and 15.8 kg of polypropylene fiber. The 28-day compressive strength is 28.6 MPa.

[0054] Example 5

[0055] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC25. The concrete composition includes 161.9 kg of water, 291 kg of cement, 68.8 kg of fly ash, 430 kg of fine ceramsite, 530 kg of river sand, 261.9 kg of desert sand, 6.8 kg of water-reducing agent, and 15.8 kg of polypropylene fiber. The 28-day compressive strength is 27.5 MPa.

[0056] Example 6

[0057] The inner leaf wall 1-2 and outer leaf wall 1-1 are made of lightweight aggregate fiber concrete with a strength grade of LC25. The concrete composition is as follows: water 167.5 kg, cement 301 kg, fly ash 71.2 kg, fine ceramsite 390 kg, river sand 570 kg, desert sand 289 kg, water-reducing agent 6.8 kg, polypropylene fiber 15.8 kg, and 28-day compressive strength 27.6 MPa.

[0058] The cement is 42.5R ordinary Portland cement; the fly ash is Grade I fly ash; the density grade of shale ceramsite is 600, and the particle size is 5-10mm; the water reduction rate of the water-reducing agent is 25%.

[0059] This invention addresses the problems of traditional composite wall panels in high seismic intensity and frigid regions, such as their heavy weight leading to strong seismic forces, high stiffness causing premature structural failure, and large temperature differences causing wall cracking.

[0060] Under frequent earthquakes, the prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall panels are connected to the frame structure to form an integral whole, which has a large lateral stiffness. The entire structure remains in an elastic state and relies on its own earthquake resistance.

[0061] Under the design earthquake action, the extruded polystyrene foam board filling material between the frame and the prefabricated lightweight sandwich insulation composite wall is squeezed and deformed, providing space for the sandwich insulation composite wall to slide. The sliding energy is consumed within a certain range, but it does not affect the overall structural safety. It can be removed and replaced after the earthquake. In addition, the extruded polystyrene foam board filling material can delay the stress concentration at the connection and effectively reduce the possibility of damage.

[0062] Under the action of a rare earthquake, the structure underwent a significant horizontal displacement, and the prefabricated lightweight sandwich insulated composite wall was damaged. However, the prefabricated lightweight sandwich insulated composite wall has stronger ductility due to the addition of polypropylene fibers, and the wire mesh restraint wall can achieve energy dissipation without collapse due to wall damage, ensuring that the structural stiffness degradation is gradual and avoiding out-of-plane instability of the wall.

[0063] Self-developed lightweight aggregate fiber concrete, using fine expanded clay aggregate as coarse aggregate, reduces the weight of the wall. Its density is approximately 1700 kg / m³, which is 65.3%-70.8% of ordinary concrete. Therefore, it has a lighter weight for the same volume, thus reducing the load on the building and effectively reducing seismic forces. Furthermore, the addition of polypropylene fibers to the formula improves the concrete's ductility and crack resistance, making it suitable for use in areas with high seismic intensity and large temperature differences. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frame structure fabricated light aggregate fiber concrete sandwich thermal insulation composite wall, comprising a cross beam (6) and a frame column (5) and a prefabricated light sandwich thermal insulation composite wall panel (1) arranged between the cross beam (6) and the frame column (5), characterized in that: The prefabricated lightweight sandwich insulated composite wall panel (1) includes an inner leaf wall (1-2) and an outer leaf wall (1-1). A double-sided steel wire mesh insulation board (1-4) is provided between the inner leaf wall (1-2) and the outer leaf wall (1-1). Molded polystyrene boards (1-3) are provided on both sides of the double-sided steel wire mesh insulation board (1-4). A joint filler (1-8) is reserved at the bottom of the molded polystyrene board (1-3). A reserved hole (1-7) is provided near the bottom of the inner leaf wall (1-2). The reserved hole (1-7) is connected to the joint filler (1-8). The joint filler material (7) is injected into the joint filler (1-8) through the reserved hole (1-7). The top and bottom ends of the prefabricated lightweight sandwich insulated composite wall panel (1) are connected to the crossbeam (6) through sliding energy dissipation nodes (2). The left and right sides of the prefabricated lightweight sandwich insulated composite wall panel (1) are connected to the frame column (5). A limiting device (4) is provided between them, and filling material (3) is also pasted between the left and right sides of the prefabricated lightweight sandwich insulation composite wall panel (1) and the frame column (5); the filling material (3) is extruded polystyrene foam board; the sliding energy dissipation node (2) is an L-shaped steel plate (2-1), one side of the L-shaped steel plate (2-1) is fixedly connected to the crossbeam (6) by bolts, and the other side of the L-shaped steel plate (2-1) is provided with a strip hole (2-2). One end of the L-shaped tie member (1-6) passes vertically through the double-sided steel wire mesh insulation board (1-4), the inner leaf wall (1-2) and the strip hole (2-2) of the L-shaped steel plate from the outer leaf wall (1-1), and is fixed by a gasket and nut; the other end of the L-shaped tie member (1-6) is wrapped with insulation material (1-9) and embedded in the wall body of the outer leaf wall (1-1).

2. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The double-sided wire mesh insulation board (1-4) has a tie wire (1-5) between the wire mesh on both sides; the wire mesh is made of high-strength steel wire mesh, the mesh diameter is 40mm×40mm~60mm×60mm, and the diameter of the tie wire (1-5) is not less than 4mm.

3. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The filling material (3) is extruded polystyrene foam board, and the joint filling material (7) is polyurethane foam.

4. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The diameter of the L-shaped tie member (1-6) is between 10mm and 16mm.

5. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The limiting device (4) includes a connecting block (4-4), which has a screw hole (4-3). A bolt passes through the screw hole (4-3) to connect the inner leaf wall (1-2) to the limiting device. The connecting block (4-4) also has a T-shaped limiting plate (4-1). The bottom end of the T-shaped limiting plate (4-1) is connected to the top end of the connecting block (4-4) by a weld (4-2). The T-shaped arm of the T-shaped limiting plate (4-1) abuts against the frame column (5).

6. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The inner leaf wall (1-2) and outer leaf wall (1-1) are made of lightweight aggregate fiber concrete with a strength grade of LC20, a water-cement ratio of 0.50, and a volumetric sand ratio of 36.3%~39.3%. The standard mix proportion per cubic meter of concrete includes 162~168 kg of water, 275~285 kg of cement, 49.1~50.9 kg of fly ash, 440 kg~460 kg of fine ceramsite, 445 kg~485 kg of river sand, 220 kg~260 kg of desert sand, 6.12 kg of water-reducing agent, and 15~16 kg of polypropylene fiber.

7. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 1, characterized in that: The inner leaf wall (1-2) and outer leaf wall (1-1) are made of lightweight aggregate fiber concrete with a strength grade of LC25, a water-cement ratio of 0.45, and a volumetric sand ratio of 42.9%~46.6%. The standard mix proportion per cubic meter of concrete includes 161.9~167.5 kg of water, 291~301 kg of cement, 68.8~71.2 kg of fly ash, 390 kg~430 kg of fine ceramsite, 530 kg~570 kg of river sand, 260 kg~300 kg of desert sand, 6.8 kg of water-reducing agent, and 15~16 kg of polypropylene fiber.

8. The prefabricated lightweight aggregate fiber concrete sandwich insulation composite wall with frame structure according to claim 6 or 7, characterized in that: The cement is 42.5R ordinary Portland cement; the fly ash is Grade I fly ash; the density grade of shale ceramsite is 600, and the particle size is 5~10mm; the water reduction rate of the water-reducing agent is 25%.

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