Ultralow-energy-consumption sandwich thermal insulation external wall panel with impact resistance

Abstract

The utility model relates to the field of buildings, in particular to an ultra-low energy consumption sandwich thermal insulation external wall panel with impact resistance, which comprises a thermal insulation layer, a concrete outer acanthus and a concrete inner acanthus, the concrete outer acanthus and the concrete inner acanthus are positioned on two sides of the thermal insulation layer, and the concrete outer acanthus and the concrete inner acanthus are tied and positioned through a tie cylinder penetrating through the thermal insulation layer. The cross section of each tie cylinder is of a regular hexagon structure, and cylinder bodies of the tie cylinders form a honeycomb layout in the direction perpendicular to the plate surface of the wallboard; the heat preservation layer located in a cylinder cavity of the pulling cylinder is fixedly connected with the cylinder wall of the pulling cylinder, and the pulling cylinder and the heat preservation layer are made of the same material. The heat preservation performance is improved, and meanwhile the initial rigidity and the impact resistance of the wallboard are improved.

Description

Technical Field

[0001] This utility model relates to the field of construction, specifically to an ultra-low energy consumption sandwich insulated exterior wall panel with impact resistance. Background Technology

[0002] Traditional building wall panels and floor slabs are typically made of solid reinforced concrete slabs. However, due to their poor thermal insulation performance, buildings using solid reinforced concrete slabs often suffer from significant energy losses. To improve the thermal insulation effect of buildings, precast concrete sandwich wall panels have emerged. Precast concrete sandwich wall panels mainly consist of concrete leaf slabs on both sides, a thermal insulation layer in the middle, and tie rods connecting the two concrete leaf slabs. In precast concrete sandwich wall panels, the tie rods, as key components connecting the two concrete leaf slabs, have a significant impact on the overall performance of the precast concrete sandwich wall panel due to their shear force transfer capacity.

[0003] Currently, conventional precast concrete sandwich wall panels typically use concrete blocks or steel bars as tie rods. While these panels achieve high overall performance, they also generate significant thermal bridging, reducing their insulation performance. To address the thermal bridging effect, extruded polystyrene (XPS) materials have been adopted as the insulation layer, along with GFRP (growth galvanized reinforced plastic) plate tie rods to replace traditional concrete blocks or steel bars, thus improving the wall panel's insulation performance. However, this structural approach, while improving insulation performance, often leads to a decrease in the wall panel's initial stiffness and impact resistance; these two aspects cannot be simultaneously improved, thus requiring a solution. Utility Model Content

[0004] To avoid and overcome the technical problems existing in the prior art, this utility model provides an ultra-low energy consumption sandwich insulated exterior wall panel with impact resistance. This utility model improves both the thermal insulation performance and the initial stiffness and impact resistance of the wall panel.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An ultra-low energy consumption sandwich insulated exterior wall panel with impact resistance includes an insulation layer and concrete outer leaf panels and concrete inner leaf panels located on both sides of the insulation layer. The concrete outer leaf panels and concrete inner leaf panels are connected and positioned by tie tubes that penetrate the insulation layer. The cross-section of the tie tube is hexagonal, and the body of each tie tube forms a honeycomb layout along the direction perpendicular to the wall panel surface. The insulation layer located inside the cavity of the tie tube is fixedly connected to the tube wall of the tie tube, and the tie tube and the insulation layer are made of the same material.

[0007] As a further embodiment of this utility model: both the outer concrete leaf plate and the inner concrete leaf plate are provided with a steel mesh, which includes transverse steel bars provided adjacent to the insulation layer and longitudinal steel bars provided away from the insulation layer, with a spacing between the transverse steel bars and the longitudinal steel bars.

[0008] As a further improvement of this utility model: the tie cylinder is provided with positioning holes on both the outer concrete leaf plate and the inner concrete leaf plate, so that the transverse reinforcing bars in the outer concrete leaf plate and the inner concrete leaf plate can pass through. The diameter of the positioning hole corresponds to the diameter of the transverse reinforcing bar, and the diameter of the positioning hole is 6mm to 10mm.

[0009] As a further improvement of this utility model, the two sections of the tube wall arranged opposite each other are arranged parallel to the two sides of the wall panel.

[0010] As a further improvement of this utility model, both the tie tube and the insulation layer are made of extruded polystyrene board.

[0011] As a further improvement of this utility model, both the outer concrete leaf plate and the inner concrete leaf plate are filled with rubber aggregate, and the particle size of the rubber aggregate is 10mm to 19mm.

[0012] As a further improvement of this utility model: the wall thickness of the tie tube is 1mm to 3mm, the side length of the cross-section of the tie tube is 60mm to 120mm, and the thickness of the insulation layer is 50mm to 100mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model sets the tie member as a honeycomb structure and connects and fixes it with the insulation layer to form an integral whole, so that the two ends of the tie cylinder extend into the inner and outer concrete leaf plates, which improves the insulation performance and gives the wall panel better impact resistance and higher initial stiffness.

[0015] 2. This utility model adds rubber aggregate into the concrete leaf plate, which further improves the energy absorption capacity of the wall panel, increases the toughness of the concrete, improves the brittleness of the concrete, and further improves the impact resistance of the wall panel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] In the diagram: 1. Outer concrete leaf slab; 2. Insulation layer; 3. Inner concrete leaf slab;

[0018] 4. Tie tube; 41. Positioning hole; 51. Horizontal reinforcement; 52. Longitudinal reinforcement. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 In this embodiment of the invention, an ultra-low energy consumption sandwich insulation exterior wall panel with impact resistance is provided.

[0021] The wall panel includes an outer concrete leaf panel 1 and an inner concrete leaf panel 3 located on both sides of the insulation layer 2. Both the outer and inner concrete leaf panels 1 and 3 are reinforced with a steel mesh, which includes transverse steel bars 51 and longitudinal steel bars 52. The transverse steel bars 51 are arranged adjacent to the insulation layer 2, while the longitudinal steel bars 52 are arranged away from the insulation layer 2. There is a gap between the transverse and longitudinal steel bars 51, and they are tied and fixed at the joints. Rubber aggregate needs to be added during the pouring of the outer and inner concrete leaf panels 1 and 3, with the particle size of the rubber aggregate controlled between 10mm and 19mm.

[0022] The insulation layer 2 is integrally provided with tie cylinders 4. There are multiple sets of tie cylinders 4. The tie cylinders 4 are in the form of regular hexagons. The tie cylinders 4 are connected in a honeycomb structure. The adjacent tie cylinders 4 share the cylinder wall.

[0023] The length of the tie cylinder 4 is greater than the thickness of the insulation layer 2. When the tie cylinder 4 is fixed to the insulation layer 2, the geometric center of the tie cylinder 4 and the geometric center of the insulation layer 2 are located on the same plane. The overall thickness of the insulation layer 2 is controlled to be 50mm to 100mm.

[0024] The insulation layer 2 and the tie cylinder 4 are made of the same material, extruded polystyrene board. The insulation layer 2 and tie cylinder 4 are integrally formed. During fixing, the insulation layer 2 is first cut to form a ring structure, which wraps around the honeycomb structure of the tie cylinder 4, interlocking with it. After interlocking, they are bonded and fixed. The cut-off sheets from the insulation layer 2 are processed into regular hexagonal sheets, corresponding to the inner wall dimensions of the tie cylinder 4. Each sheet is at the same height as the ring structure of the insulation layer 2, together forming a separate insulation layer 2. These sheets are bonded and fixed to the cylinder wall of the tie cylinder 4.

[0025] The thickness of the tie tube 4 is set to 1mm to 3mm, and the side length of the cross-section of the tie tube 4 needs to be controlled between 60mm and 120mm.

[0026] The tie cylinder 4 is provided with positioning holes 41 on the cylinder body located in the outer concrete leaf plate 1 and the inner concrete leaf plate 3, so that the transverse steel bars 51 in the outer concrete leaf plate 1 and the inner concrete leaf plate 3 can pass through. The diameter of the positioning hole 41 corresponds to the diameter of the transverse steel bar 51, and the diameter of the positioning hole 41 is 6mm to 10mm.

[0027] The honeycomb structure formed by the tie tubes 4 must be located within the outer edge of the insulation layer 2 to avoid positional interference with the edge of the insulation layer 2, and should be arranged as close as possible to the center of the insulation layer 2. After the tie tubes 4 are fixed, it must be ensured that the two opposing sections of the tube wall are arranged parallel to the side of the wall panel.

[0028] The manufacturing process of wall panels includes the following steps:

[0029] S1. Design the wall panels and determine the thickness of the outer concrete leaf panel 1, the inner concrete leaf panel 3, and the insulation layer 2.

[0030] S2. Assuming that both ends of the tie tube 4 need to be inserted into the concrete outer leaf plate 1 and the concrete inner pressure plate 3, design the dimensions of the tie tube 4, and calculate whether the impact absorption energy and initial stiffness of the wall panel meet the design requirements. If they meet the requirements, process the tie tube 4 of the corresponding dimensions.

[0031]

[0032] Among them, K L This represents the initial stiffness of the wall panel;

[0033] E L To absorb energy and enhance the impact resistance of the wall panel;

[0034] B is the side length of the cross-section of the tie cylinder 4;

[0035] H L The length of the tie tube 4.

[0036] S3. Connect each tie cylinder 4 to form a honeycomb structure. Each tie cylinder 4 has a positioning hole 41 corresponding to the diameter of the transverse steel bar 51.

[0037] S4. A groove is cut in the middle of the insulation layer 2 to engage with the honeycomb structure formed by the tie cylinder 4. The insulation layer 2 peeled off during the grooving is cut to form a regular hexagonal layer corresponding to the cross-sectional size of the inner wall of each tie cylinder 4. The number of regular hexagonal layers corresponds to the number of tie cylinders 4. Each regular hexagonal layer is pasted to the inner wall of the corresponding tie cylinder 4 so that the tie cylinder 4 and the insulation layer 2 form an integral structure.

[0038] The insulation layer 2 and the tie cylinder 4 are pre-bonded with glue. After the concrete is poured, the solidified concrete will clamp the tie cylinder 4.

[0039] S5. Fix the insulation layer 2 with the pre-fixed tie cylinder 4, the transverse steel bar 51 and the longitudinal steel bar 52 in the concrete pouring mold, so that each transverse steel bar 51 passes through the positioning hole 41 of the corresponding tie cylinder 4, pour concrete into the concrete pouring mold, cure and demold to complete the manufacturing of the wall panel.

[0040] In the actual pouring process, the leaf plate on one side of the insulation layer 2 is poured first, then the wall panel is flipped 180 degrees and the leaf plate on the other side is poured. The positioning hole 41 can be drilled after the insulation layer 2 is fixed in the concrete pouring mold. When pouring the concrete leaf plate on the corresponding side, the positioning hole 41 is opened on the corresponding side of the tie cylinder 4.

[0041] In this embodiment, when the wall panel is used as a building curtain wall, the thickness of the outer concrete leaf 1 is set to 60mm, the thickness of the insulation layer 2 is set to 30mm, and the thickness of the inner concrete leaf 3 is set to 200mm.

[0042] A numerical model of the wall panel was created using LS-DYNA software. The concrete leaf panels, insulation layer, and tie cylinder were all built using 3D solid models. Specifically, the outer concrete leaf panel 1 and the inner concrete leaf panel 3 were each 60mm thick, with a length and width of 1200mm. The insulation layer 2 was 50mm thick, and the overall wall panel thickness was 170mm. A cylindrical drop hammer with a diameter of 200mm and a mass of 100kg was created and set as a rigid body. The contact velocity between the drop hammer and the center of the wall panel surface was set to 6.62m / s.

[0043] In the analysis, the cross-sectional side length B of the tie cylinder 4 was set for five working conditions, with side lengths of 60mm, 75mm, 90mm, 105mm, and 120mm respectively. The length H of the tie cylinder 4... L Five working conditions were set up with lengths of 90mm, 100mm, 110mm, 120mm, and 130mm. The corresponding depths D of the tie cylinder 4 extending into the concrete blades at both ends were 20mm, 25mm, 30mm, 35mm, and 40mm. The impact absorption energy obtained through simulation analysis and calculation for different size combinations is shown in Table 1 below. E in Table 1... model E represents the impact energy absorption of the wall panel, as simulated by software. L The calculated impact energy absorption capacity of the wall panel.

[0044] Table 1

[0045]

[0046]

[0047] It can be seen that the impact absorption energy of the wall panel obtained by simulation is in good agreement with the impact absorption energy of the wall panel obtained by calculation. The impact resistance performance of the wall panel can be predicted well through calculation.

[0048] Under the same size combination, the initial stiffness of the wall panel obtained through simulation analysis and the initial stiffness of the wall panel obtained through calculation are shown in Table 2 below. K in Table 2... model K represents the initial stiffness of the wall panel obtained through software simulation. L This represents the calculated initial stiffness of the wall panel.

[0049] Table 2

[0050]

[0051]

[0052] It can be seen that the initial stiffness of the wall panel obtained by simulation is in good agreement with the initial stiffness data of the wall panel obtained by calculation. The initial stiffness parameters of the wall panel can be predicted well through calculation.

[0053] With the thicknesses of the outer concrete leaf plate 1, the inner concrete leaf plate 3, and the insulation layer 2 remaining unchanged, the tie cylinder 4 is replaced with the existing GFRP plate tie member. The depths of the GFRP plate tie member extending into the outer concrete leaf plate 1 and the inner concrete leaf plate 3 are consistent with the extension depths of the tie cylinder 4. The GFRP plate tie members are densely distributed with a spacing of 125mm.

[0054] The initial stiffness obtained is 1330.09 KN / mm, which is obviously less than the initial stiffness obtained by the simulation of the wall panel in this application. The impact absorption energy is 661.387 J, which is also less than the impact absorption energy obtained by the simulation of the wall panel in this application. The comprehensive performance of this application is far superior to that of traditional precast wall panels using GFRP plate tie members.

[0055] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0056] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A super low energy consumption sandwich thermal insulation exterior wall panel with impact resistance, characterized in that, It includes an insulation layer (2) and concrete outer leaf plates (1) and concrete inner leaf plates (3) located on both sides of the insulation layer (2). The concrete outer leaf plates (1) and concrete inner leaf plates (3) are connected and positioned by tie cylinders (4) that penetrate the insulation layer (2). The cross-section of the tie cylinder (4) is a regular hexagonal structure. The cylinder body of each tie cylinder (4) forms a honeycomb layout along the direction perpendicular to the wall panel. The insulation layer (2) located in the cylinder cavity of the tie cylinder (4) is fixedly connected to the cylinder wall of the tie cylinder (4). The tie cylinder (4) and the insulation layer (2) are made of the same material.

2. The ultra-low energy sandwich thermal insulation exterior wall panel with impact resistance according to claim 1, characterized in that, Both the outer concrete leaf slab (1) and the inner concrete leaf slab (3) are equipped with steel mesh. The steel mesh includes transverse steel bars (51) set in the adjacent insulation layer (2) and longitudinal steel bars (52) set away from the insulation layer (2). There is a gap between the transverse steel bars (51) and the longitudinal steel bars (52).

3. The ultra-low energy sandwich thermal insulation exterior wall panel with impact resistance according to claim 2, characterized in that, The tie cylinder (4) is provided with positioning holes (41) on the cylinder body located in the concrete outer leaf plate (1) and the concrete inner leaf plate (3) so that the transverse steel bars (51) in the concrete outer leaf plate (1) and the concrete inner leaf plate (3) can pass through. The diameter of the positioning hole (41) corresponds to the diameter of the transverse steel bar (51), and the diameter of the positioning hole (41) is 6mm to 10mm.

4. The super-low energy-consumption sandwich thermal insulation exterior wall panel with impact resistance according to any one of claims 1-3, characterized in that, The two sections of the tube wall of the tie tube (4) are arranged opposite to each other and are parallel to the two sides of the wall panel.

5. The super-low energy-consumption sandwich thermal-insulation exterior wallboard with impact resistance according to any one of claims 1-3, characterized in that, Both the tie tube (4) and the insulation layer (2) are extruded polystyrene boards.

6. The super-low energy-consumption sandwich thermal-insulation exterior wallboard with impact resistance according to any one of claims 1-3, characterized in that, Both the outer concrete leaf plate (1) and the inner concrete leaf plate (3) are filled with rubber aggregate, and the particle size of the rubber aggregate is 10mm to 19mm.

7. A sandwich-type thermally insulated exterior wall panel with impact resistance according to any one of claims 1 to 3, characterized in that, The wall thickness of the tie tube (4) is 1mm to 3mm, and the side length of the cross section of the tie tube (4) is 60mm to 120mm; the thickness of the insulation layer (2) is 50mm to 100mm.

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