A type of sandwich insulated precast wall panel

Abstract

This utility model discloses a sandwich insulated precast wall panel, comprising: an outer leaf plate with a thickness of 30mm, made of high-performance concrete and internally reinforced with steel fibers; an insulation board with a thickness of 40mm, located on the outer side of the outer leaf plate; an inner leaf plate with a thickness of 200mm, located on the outer side of the insulation board; tie members, located on the outer and inner leaf plates and penetrating the insulation board; and a waterproof and breathable membrane, located on both sides of the insulation board. This utility model has the following advantages and effects: by using high-performance concrete and steel fiber outer leaf plates, and adding anchoring tie members to connect them into an integrated precast wall panel, and by adding an interlayer waterproof and breathable membrane to improve waterproof performance, it achieves high-quality ultra-thin outer leaf finish molding and long-term wall durability, solving the defects of cracking and damage of ultra-thin outer leaf plates, weakened waterproof structure, and insufficient anchoring depth of tie members, and compensating for the structural defects of excessively thick outer leaves in conventional sandwich insulated precast wall panels.

Description

Technical Field

[0001] This utility model relates to the field of precast wall panels, and in particular to a sandwich insulated precast wall panel. Background Technology

[0002] Sandwich insulated precast wall panels are an efficient building exterior wall solution that combines structural strength, thermal insulation performance, and construction efficiency. These wall panels typically consist of three layers: the inner and outer layers are made of concrete or other high-strength materials, and the middle layer is an insulation material.

[0003] Conventional sandwich insulated precast wall panels typically employ a sandwich structure consisting of a 60mm thick outer leaf panel, an 80mm-100mm thick Class B fire-resistant insulation material panel, and a 200mm thick inner leaf panel. The outer leaf panel primarily serves as the insulation panel for protection, providing fire resistance, water resistance, and protection against radiation aging. Additionally, it incorporates decorative features through its textured molding process.

[0004] However, the existing precast wall panels are too thick, which leads to problems such as easy cracking and damage of the outer leaf panels, weakened waterproof structure, and insufficient anchoring depth of tie members, and these issues need to be improved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sandwich insulated precast wall panel that solves the problems of easy cracking and damage of the outer leaf panel, weakened waterproof structure and insufficient anchoring depth of tie members.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sandwich insulated precast wall panel, comprising:

[0007] The outer leaf plate is 30mm thick and is made of high-performance concrete with steel fibers spread inside.

[0008] The insulation board is 40mm thick and is located on the outside of the outer leaf plate;

[0009] The inner leaf plate is 200mm thick and is located on the outside of the insulation board;

[0010] A tie rod is provided on the outer leaf plate and the inner leaf plate, and penetrates the insulation board;

[0011] A waterproof and breathable membrane is installed on both sides of the insulation board.

[0012] In a preferred embodiment, the present invention can be further configured such that the outer leaf plate comprises multiple plate bodies, and a 10mm connecting seam is provided between adjacent plate bodies.

[0013] In a preferred embodiment, the present invention can be further configured such that: a PE rod is embedded in the joint and a sealant covering the PE rod is provided.

[0014] In a preferred embodiment, the present invention can be further configured such that each of the plates has a wire mesh with a spacing of 200mm-400mm inside.

[0015] In a preferred embodiment, the present invention can be further configured such that two sets of steel reinforcement frames are arranged in parallel inside the inner leaf plate.

[0016] In a preferred embodiment, the present invention can be further configured as follows: the tie member includes a pre-embedded nut, a tie plate, and a bolt; the pre-embedded nut is pre-embedded in the outer leaf plate; the tie plate is L-shaped and passes through the joint between the insulation boards and is located inside the inner leaf plate; the bolt passes through the tie plate and is threaded to the nut.

[0017] In a preferred embodiment, the present invention can be further configured such that: the nut is provided with a mounting plate fixed to the wire mesh.

[0018] In a preferred embodiment, the present invention can be further configured such that: the tie plate is provided with a clamping block for clamping the reinforcing bar skeleton on one side inside the inner leaf plate.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. By using high-performance concrete material and steel fiber outer leaf panels, and adding anchoring tie pieces to connect them into an integrated precast wall panel, and adding an interlayer waterproof and breathable membrane to improve waterproof performance, the high-quality ultra-thin outer leaf surface of the precast wall panel is formed and the wall is durable for a long time. This solves the defects of cracking and damage of ultra-thin outer leaf panels, weakened waterproof structure, and insufficient anchoring depth of tie pieces, and makes up for the structural defects of excessively thick outer leaves of conventional sandwich insulated precast wall panels.

[0021] 2. By setting up segmented outer blades and reserving a 10mm connection seam between each ultra-thin outer blade, it can adapt to in-plane deformation caused by various external loads such as wind, earthquake and temperature, and avoid collision damage between the plates;

[0022] 3. By setting up anchor-enhanced tie members, reliable anchoring can be achieved under the condition of limited anchoring thickness of ultra-thin outer leaf plates, meeting the safety stress requirements and effectively solving the problem of insufficient anchoring depth of conventional tie members. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment;

[0024] Figure 2 This is a schematic diagram of the internal structure of an embodiment;

[0025] Figure 3This is a schematic diagram of the tie member in an embodiment.

[0026] Reference numerals: 1. Outer leaf plate; 11. Plate body; 12. Wire mesh; 13. Connecting seam; 14. PE rod; 15. Sealant; 2. Insulation board; 3. Inner leaf plate; 31. Reinforcing steel skeleton; 4. Tie member; 41. Embedded nut; 42. Tie plate; 43. Bolt; 44. Mounting plate; 45. Clamping block; 5. Waterproof and breathable membrane; 6. Steel fiber. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 , Figure 2 As shown, a sandwich insulated precast wall panel includes an outer leaf panel 1, an insulation panel 2, an inner leaf panel 3, a tie rod 4, and a waterproof and breathable membrane 5.

[0029] like Figure 1 , Figure 2 As shown, the outer blade plate 1 is 30mm thick, made of high-performance concrete, and has steel fibers 6 sprinkled inside.

[0030] like Figure 1 , Figure 2 As shown, the outer leaf plate 1 includes multiple plates 11, and each plate 11 has a wire mesh 12 with a spacing of 200mm-400mm inside. A 10mm connecting seam 13 is provided between adjacent plates 11, and a PE rod 14 and a sealant 15 covering the PE rod 14 are embedded in the connecting seam 13.

[0031] like Figure 1 , Figure 2 As shown, the insulation board 2 is 40mm thick and is located on the outside of the outer leaf plate 1. The insulation board is made of Class A fire-resistant material. The inner leaf plate 3 is 200mm thick and is located on the outside of the insulation board 2. Two sets of steel reinforcement frames 31 are arranged in parallel inside the inner leaf plate 3.

[0032] like Figure 2 , Figure 3 As shown, the tie rod 4 is installed on the outer leaf plate 1 and the inner leaf plate 3, and penetrates the insulation board 2. The waterproof and breathable membrane 5 is installed on both sides of the insulation board 2.

[0033] like Figure 2 , Figure 3 As shown, the tie member 4 includes a pre-embedded nut 41, a tie plate 42, and a bolt 43. The pre-embedded nut 41 is pre-embedded in the outer leaf plate 1, and the nut is provided with an mounting plate 44 fixed on the wire mesh 12 to improve the structural strength of the nut.

[0034] like Figure 2 , Figure 3 As shown, the tie plate 42 is L-shaped and passes through the joint between the insulation boards 2 and is located inside the inner leaf plate 3. The tie plate 42 is provided with a clamping block 45 for clamping the steel reinforcement skeleton 31 on one side inside the inner leaf plate 3. The bolt 43 passes through the tie plate 42 and is threaded to the nut.

[0035] The tie element 4 can also be arranged in a Z-shape, or it can be fixed in other ways such as by pre-drilling holes.

[0036] The ultra-thin outer leaf plate 1 is made of high-performance concrete with a standard compressive strength ≥80Mpa. Due to the absence of coarse aggregate, it has excellent fluidity. At the same time, steel fibers 6 are added, which significantly improves the stress and crack resistance of the concrete material. In addition, a steel wire mesh 12 with a spacing of 200mm-400mm is arranged inside the outer leaf plate 1 to further enhance the crack resistance.

[0037] Meanwhile, the outer leaf plate 1 adopts a segmented design concept, combined with process measures such as laying reinforcing plates to reduce stress concentration in components during production. This can significantly improve the prefabrication accuracy of ultra-thin components, reduce the damage caused by the pouring and vibration of the upper inner leaf plate 3 and the flipping and hoisting of the entire prefabricated wall panel during the reverse-casting preparation process, and effectively improve the yield of the outer leaf plate 1.

[0038] The core principle of panel segmentation is that "the size should not be too small or too large." If the size is too small, it will significantly reduce the installation efficiency, and if the size is too large, it will significantly increase the probability of damage during the manufacturing process. Based on experimental analysis, it was determined that the height and width of each panel should not exceed 2m.

[0039] For the outer leaf plate 1 without holes, when the wall length is less than or equal to 4m, it is advisable to divide it into 2-3 sections along the length direction. When the wall length is greater than 4m and less than or equal to 6m, it is advisable to divide it into 3-4 sections along the length direction. When the wall height is greater than 2m, it is advisable to divide it along the height direction.

[0040] For the outer leaf plate 1 containing holes, it is advisable to design it in sections according to the areas on both sides and the upper and lower areas of the holes, and the height and width dimensions should not exceed the limits.

[0041] Furthermore, a 10mm connection gap 13 is reserved between each ultra-thin outer blade 1 to accommodate in-plane deformation caused by various external loads such as wind, earthquakes, and temperature, and to prevent damage from collisions between the plates. Due to the small thickness of the ultra-thin outer blade 1, it is not easy to process tongue and groove joints to form a waterproof structure. Therefore, in addition to using PE rods 14 and sealant 15 to fill the gaps, two waterproof and breathable membranes 5 are added to form a complete waterproof structure, improving the waterproof effect and durability.

[0042] Insulation board 2 must be made of Class A fire-resistant materials, such as rock wool board, vacuum insulation board, aerogel board, or a combination of various insulation materials, in order to use an ultra-thin outer leaf board 1 with a thickness of less than 50mm. When a vacuum insulation board is used as insulation board 2, it can be designed as an ultra-thin insulation board 2 of about 40mm, which can meet the building energy-saving requirements, thus forming a double-layer ultra-thin prefabricated wall panel of outer leaf board 1 and insulation board 2, further saving energy and reducing carbon emissions.

[0043] The inner leaf plate 3 uses ordinary concrete and conventional structure, with an internal steel reinforcement skeleton 31. It can use solid precast wall panels or hollow precast wall panels to reduce weight. With various connection methods, it can be combined with post-cast concrete or other materials to form an assembled monolithic shear wall load-bearing structure.

[0044] The anchor-enhanced tie member 4 can achieve reliable anchoring under the limited anchoring thickness of the ultra-thin outer leaf plate 1, meet the safety stress requirements, and effectively solve the problem of insufficient anchoring depth of conventional tie members 4. The specific dimensions can be designed by stress calculation.

[0045] The tie members 4 should be arranged at a spacing of 300mm-600mm and a side distance of 100mm-300mm, with no less than 4 on each outer blade plate 1, so as to form a reasonable force transmission system that satisfies both the safe force bearing of the outer blade plate 1 and the non-combined force bearing of the outer blade plate 1 and the inner blade plate 3.

[0046] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A sandwich-insulated precast wall panel, characterized in that: include: The outer leaf plate (1) has a thickness of 30 mm. The outer leaf plate (1) is made of high-performance concrete and is internally covered with steel fibers (6). The insulation board (2) has a thickness of 40 mm and is disposed on the outside of the outer leaf plate (1); The inner leaf plate (3) has a thickness of 200 mm and is disposed on the outside of the insulation plate (2); A tie member (4) is provided on the outer leaf plate (1) and the inner leaf plate (3) and penetrates the insulation board (2); A waterproof and breathable membrane (5) is provided on both sides of the insulation board (2).

2. The sandwich insulated precast wall panel according to claim 1, characterized in that: The outer leaf plate (1) includes multiple plates (11), and a 10mm connecting seam (13) is provided between adjacent plates (11).

3. A sandwich-insulated precast wall panel according to claim 2, characterized in that: The joint (13) is embedded with a PE rod (14) and a sealant (15) covering the PE rod (14).

4. A sandwich-insulated precast wall panel according to claim 3, characterized in that: Each of the aforementioned plates (11) is provided with wire mesh (12) with a spacing of 200mm-400mm inside.

5. A sandwich-insulated precast wall panel according to claim 4, characterized in that: The inner leaf plate (3) has two sets of steel reinforcement frames (31) arranged in parallel inside.

6. A sandwich-insulated precast wall panel according to claim 5, characterized in that: The tie member (4) includes a pre-embedded nut (41), a tie plate (42), and a bolt (43). The pre-embedded nut (41) is pre-embedded in the outer leaf plate (1). The tie plate (42) is L-shaped and passes through the joint between the insulation plates (2) and is located inside the inner leaf plate (3). The bolt (43) passes through the tie plate (42) and is threaded to the nut.

7. A sandwich-insulated precast wall panel according to claim 6, characterized in that: The nut is provided with a mounting plate (44) that is fixed to the wire mesh (12).

8. A sandwich-insulated precast wall panel according to claim 7, characterized in that: The tie plate (42) is provided with a clamping block (45) for clamping the steel reinforcement skeleton (31) on one side inside the inner leaf plate (3).

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