Prefabricated concrete heat preservation structure

Abstract

The utility model provides a prefabricated concrete heat preservation structure which comprises a connecting piece, an inner leaf wallboard, a heat preservation board, a strain relief module and an outer leaf wallboard, wherein the inner leaf wallboard, the heat preservation board, the strain relief module and the outer leaf wallboard are sequentially connected. The connecting piece penetrates through the heat preservation plate, and the two ends of the connecting piece are connected with the inner wall plate and the outer wall plate correspondingly. The strain relief module is used for absorbing deformation of the outer wallboard caused by temperature change and preventing the outer wallboard from pulling the insulation board to cause deformation of the insulation board; the strain relief module comprises an elastic layer, a buffer layer and a supporting layer which are sequentially arranged in the direction away from the outer leaf wall plate. The elastic layer is used for absorbing deformation of the outer wallboard through elastic deformation; the buffer layer is used for absorbing elastic deformation of the elastic layer; the supporting layer is used for supporting the insulation board and limiting deformation of the insulation board. According to the utility model, the strain relief module is arranged between the thermal insulation board and the outer wallboard, so that the strain of the outer wallboard caused by temperature change is relieved, and the thermal insulation performance is prevented from being damaged due to cracks generated by tearing of the thermal insulation board.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation wall panels, in particular to a precast concrete thermal insulation structure. Background Art

[0002] As the proportion of building energy consumption in the total social energy consumption has been increasing year by year, developing passive ultra-low energy consumption buildings has become the key path to reduce energy consumption. Such buildings put forward higher requirements for the thermal insulation performance of exterior walls. The precast concrete thermal insulation structure, with its advantages of light weight, high strength, excellent thermal insulation performance and industrialized production, has gradually become an ideal choice for modern building envelopes.

[0003] At present, the common precast concrete thermal insulation structure adopts a "sandwich" structure, which is composed of inner and outer leaf concrete wall panels sandwiching an intermediate thermal insulation board, and the three are connected as a whole through metal connectors. These connectors have high shear and tensile strength, which can effectively ensure the structural stability of the thermal insulation board under the action of loads such as wind pressure and earthquake.

[0004] However, during use, the outer leaf wall panel of the precast concrete thermal insulation structure is directly affected by light, temperature, etc., resulting in a large temperature difference between the outer leaf wall panel and the thermal insulation board. The degree of thermal expansion and contraction of the outer leaf wall panel is greater than that of the thermal insulation board, causing the outer leaf wall panel to pull the thermal insulation board, and then causing cracks in the thermal insulation board. The appearance of cracks will not only affect the integrity of the thermal insulation board, but may also become a channel for water infiltration, further damaging the thermal insulation performance of the thermal insulation board. Summary of the Utility Model

[0005] To solve the above problems, the utility model proposes a precast concrete thermal insulation structure.

[0006] The utility model proposes a precast concrete thermal insulation structure, including a connector, an inner leaf wall panel, a thermal insulation board, a strain elimination module and an outer leaf wall panel connected in sequence;

[0007] The connector penetrates through the thermal insulation board, and both ends of the connector are respectively connected to the inner leaf wall panel and the outer leaf wall panel;

[0008] The strain elimination module is used to absorb the deformation of the outer leaf wall panel caused by temperature change, and prevent the outer leaf wall panel from pulling the thermal insulation board, resulting in the deformation of the thermal insulation board;

[0009] Preferably, the strain elimination module includes an elastic layer, a buffer layer and a support layer arranged in sequence along the direction away from the outer leaf wall panel;

[0010] The elastic layer is used to absorb the deformation of the outer leaf wall panel through elastic deformation;

[0011] The buffer layer is used to absorb the elastic deformation of the elastic layer;

[0012] The support layer is used to provide support for the thermal insulation board and limit the deformation of the thermal insulation board.

[0013] Preferably, the connecting member includes a rigid connection core and a heat-insulating connection sleeve sleeved on the rigid connection core;

[0014] The rigid connection core is used to resist the shear force generated by the lateral load and prevent the inner leaf wall panel, the thermal insulation board and the outer leaf wall panel from undergoing interlayer dislocation;

[0015] The heat-insulating connection sleeve is used to reduce the heat transfer of the rigid connection core and resist the tensile force generated by the axial load, preventing the inner leaf wall panel, the thermal insulation board and the outer leaf wall panel from separating due to temperature deformation and axial load.

[0016] Preferably, anti-slip modules are provided at both ends of the heat-insulating connection sleeve;

[0017] The anti-slip modules are used to increase the connection strength between the heat-insulating connection sleeve and the inner leaf wall panel and the outer leaf wall panel respectively.

[0018] Preferably, a waterproof coating is provided on one side of the outer leaf wall panel away from the strain elimination module.

[0019] Preferably, the thickness of the inner leaf wall panel is 1.5 times that of the outer leaf wall panel.

[0020] Preferably, the connection mode between the inner leaf wall panel and the thermal insulation board is a bite connection.

[0021] Preferably, the elastic layer is any one of high-elastic polyurethane foam, chlorinated butyl rubber foam or low-density polyethylene foam;

[0022] The buffer layer is a rubber plate or a polyurethane elastomer plate;

[0023] The support layer is any one of a lightweight metal mesh, a glass fiber grid, an aluminum alloy honeycomb panel or a carbon fiber reinforced plastic grid.

[0024] Preferably, the material of the waterproof coating is any one of polymer cement-based waterproof coating, polyurethane waterproof coating or acrylic waterproof coating.

[0025] Preferably, the material of the rigid connection core is any one of stainless steel, titanium alloy or high-strength glass fiber;

[0026] The material of the heat-insulating connection sleeve is any one of fiber-reinforced composite material, basalt fiber reinforced plastic or aerogel composite material.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] (1) By providing a strain elimination module between the insulation board and the outer leaf wall panel, the present utility model eliminates the strain of the outer leaf wall panel caused by temperature changes, avoiding cracks in the insulation board due to tearing and thus ensuring the insulation performance and stability of the precast concrete insulation structure.

[0029] (2) By setting the connection surface between the inner leaf wall panel and the insulation board as an interlocking connection, the present utility model increases the bonding area and mechanical interlocking force between the insulation board and the inner leaf wall panel, thereby improving the connection strength between the insulation board and the inner leaf wall panel.

[0030] (3) The present utility model adopts a connector composed of a rigid connection core and an adiabatic connection sleeve, effectively avoiding the thermal bridge effect problem commonly existing in existing stainless steel connectors. Moreover, the connector of this application has both high shear strength and high tensile strength, improving the insulation and stability of the precast concrete insulation structure and extending its service life.

[0031] (4) By setting the thickness of the inner leaf wall panel to 1.5 times that of the outer leaf wall panel, the present utility model can form a "rigid inside and flexible outside" mechanical system. The thicker inner leaf wall panel bears the structural load, while the thinner outer leaf wall panel releases temperature stress through moderate flexible deformation, and can reduce the overall structural self-weight and enhance the compressive capacity. Description of the Drawings

[0032] Figure 1 is a cross-sectional view of the precast concrete insulation structure of this application;

[0033] Figure 2 is a cross-sectional view of the strain elimination module;

[0034] Figure 3 is an exploded view of the structures of the inner leaf wall panel, insulation board and outer leaf wall panel of this application;

[0035] Figure 4 is a cross-sectional view of the connector;

[0036] Figure 5 is a cross-sectional view of the adiabatic connection sleeve.

[0037] In the figure, 100 is the precast wall panel; 110 is the inner leaf wall panel; 120 is the outer leaf wall panel; 121 is the decorative layer; 210 is the insulation board; 220 is the strain elimination module; 221 is the elastic layer; 222 is the buffer layer; 223 is the support layer; 300 is the connector; 310 is the rigid connection core; 320 is the adiabatic connection sleeve; 321 is the anti-slip module. Detailed Embodiments

[0038] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present utility model. However, those skilled in the art should clearly understand that the present utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present utility model.

[0039] As Figure 1 , Figure 3 shown, the present utility model provides a precast concrete thermal insulation structure, which includes a connecting member 300, an inner leaf wall panel 110, a thermal insulation panel 210, a strain elimination module 220, and an outer leaf wall panel 120 that are connected in sequence;

[0040] One side of the inner leaf wall panel 110 away from the thermal insulation panel 210 is connected to the building and is used to bear the structural load of the building. The outer leaf wall panel 120 is made of precast concrete and is used to bear external loads and wind and rain erosion. The thermal insulation panel 210 is used to reduce the heat transfer between the inner leaf wall panel 110 and the outer leaf wall panel 120;

[0041] The connecting member 300 penetrates through the thermal insulation panel, and both ends of the connecting member 300 are respectively connected to the inner leaf wall panel 110 and the outer leaf wall panel 120. For the convenience of description, the inner leaf wall panel 110 and the outer leaf wall panel 120 are collectively referred to as the precast wall panel 100. The connecting member 300 is used to tie the thermal insulation panel 210 to the precast wall panel 100 to prevent the precast wall panel 100 from cracking;

[0042] As Figure 2 , Figure 4 shown, the connecting member 300 includes a rigid connection core 310 and a heat insulation connection sleeve 320 sleeved on the rigid connection core 310;

[0043] The rigid connection core 310 is used to resist the shear force generated by the lateral load and prevent the inner leaf wall panel 110, the thermal insulation panel, and the outer leaf wall panel 120 from undergoing interlayer dislocation;

[0044] The heat insulation connection sleeve 320 is used to reduce the heat transfer of the rigid connection core 310 and resist the tensile force generated by the axial load, preventing the inner leaf wall panel 110, the thermal insulation panel, and the outer leaf wall panel 120 from separating due to temperature deformation and axial load.

[0045] Preferably, the material of the rigid connection core 310 is any one of stainless steel, titanium alloy, or high-strength glass fiber;

[0046] The material of the heat insulation connection sleeve 320 is any one of fiber-reinforced composite materials, basalt fiber-reinforced plastics, or aerogel composite materials.

[0047] The utility model adopts a connector 300 composed of a rigid connection core 310 and a heat-insulating connection sleeve 320, effectively solving the problem that the existing connector 300 has better heat conduction performance than the insulation board, thus generating a heat bridge effect. Furthermore, it enables the precast concrete insulation structure to avoid damage to the connector 300 caused by the heat bridge effect while having high shear strength and high tensile strength, improving the heat insulation and stability of the precast concrete insulation structure, and extending the service life of the precast concrete insulation structure.

[0048] Preferably, as Figure 5 shown, anti-slip modules 321 are provided at both ends of the heat-insulating connection sleeve 320;

[0049] The anti-slip modules 321 are used to increase the connection strength between the heat-insulating connection sleeve 320 and the inner leaf wall panel 110 and the outer leaf wall panel 120 respectively.

[0050] In one embodiment, the anti-slip module 321 is an anti-slip groove. In other embodiments, the anti-slip module 321 can also be a micron-level rough structure formed by knurling or chemical etching on the surface of the heat-insulating connection sleeve 320.

[0051] The strain relief module 220 is used to absorb the deformation of the outer leaf wall panel 120 caused by temperature changes, preventing the outer leaf wall panel 120 from pulling the insulation board and causing the insulation board to deform.

[0052] Preferably, the strain relief module 220 includes an elastic layer 221, a buffer layer 222 and a support layer 223 arranged in sequence along the direction away from the outer leaf wall panel 120;

[0053] The elastic layer 221 is used to absorb the deformation of the outer leaf wall panel 120 through elastic deformation;

[0054] The buffer layer 222 is used to absorb the elastic deformation of the elastic layer 221;

[0055] The support layer 223 is used to provide support for the insulation board and limit the deformation of the insulation board.

[0056] Preferably, the elastic layer 221 is any one of high-elastic polyurethane foam, chlorinated butyl rubber foam or low-density polyethylene foam;

[0057] The buffer layer 222 is a rubber plate or a polyurethane elastomer plate;

[0058] The support layer 223 is any one of a lightweight metal mesh, a glass fiber grid, an aluminum alloy honeycomb panel or a carbon fiber reinforced plastic grid.

[0059] In this utility model, a strain elimination module 220 is arranged between the insulation board 210 and the outer leaf wall panel 120 to buffer and eliminate the temperature stress caused by temperature changes, avoiding the insulation board 210 from being torn to generate cracks, resulting in damage to the insulation performance, thereby ensuring the insulation performance and stability of the precast concrete insulation structure.

[0060] Preferably, a waterproof coating is provided on the side of the outer leaf wall panel 120 away from the strain elimination module 220.

[0061] Preferably, the material of the waterproof coating is any one of polymer cement-based waterproof coating, polyurethane waterproof coating or acrylic waterproof coating.

[0062] Furthermore, in other embodiments, a decorative layer 121 is also fixedly connected to the side of the outer leaf wall panel 120 away from the insulation board 210, and a waterproof coating is provided on the surface of the decorative layer 121. In this embodiment, through the composite structure of the decorative layer 121 and the waterproof coating, a multiple protection interface is formed. The decorative layer 121 provides a weather-resistant surface to resist physical wear and ultraviolet aging, and the waterproof coating forms a continuous sealing film to prevent the penetration of liquid water, improving the weather resistance and aesthetics of the structure.

[0063] Preferably, the thickness of the inner leaf wall panel 110 is 1.5 times that of the outer leaf wall panel 120. In this utility model, setting the thickness of the inner leaf wall panel 110 to be 1.5 times that of the outer leaf wall panel 120 can form a mechanical system of "rigid inside and flexible outside". The thicker inner leaf wall panel 110 bears the structural load, and the thinner outer leaf wall panel 120 releases the temperature stress through moderate flexible deformation, and can reduce the overall structural self-weight and improve the wind pressure resistance ability.

[0064] In one embodiment, the connection mode between the inner leaf wall panel 110 and the insulation board is a bite connection; as Figure 1 shown, the side of the insulation board 210 close to the inner leaf wall panel 110 is set to be serrated, the side of the inner leaf wall panel 110 close to the insulation board 210 is set to be serrated, and the adjacent sides of the inner leaf wall panel 110 and the insulation board 210 are mutually bitten.

[0065] In this embodiment, by setting the connection surfaces of the inner leaf wall panel 110 and the insulation board 210 to be serrated and mutually bitten, the bonding area and mechanical bite force between the insulation board 210 and the inner leaf wall panel 110 are increased, thereby improving the overall connection strength; furthermore, the serrated design can disperse the stress to a wider contact surface, avoiding damage caused by stress concentration, improving the overall stability and durability of this utility model; it also avoids the problem that the bonding between the insulation board 210 and the inner leaf wall panel 110 fails, and then the load acts on the connector 300, increasing the shear stress load of the connector 300, and improving the overall structural stability.

[0066] Compared with the prior art, the utility model has the following beneficial effects:

[0067] (1) By arranging a strain elimination module between the insulation board and the outer leaf wall panel, the utility model eliminates the strain of the outer leaf wall panel caused by temperature changes, avoids the insulation board from being torn to generate cracks, and prevents the insulation performance from being damaged, thereby ensuring the insulation performance and stability of the precast concrete insulation structure;

[0068] (2) By setting the connection surface between the inner leaf wall panel and the insulation board as an interlocking connection, the utility model increases the bonding area and mechanical bite force between the insulation board and the inner leaf wall panel, thereby improving the connection strength between the insulation board and the inner leaf wall panel;

[0069] (3) The utility model adopts a connector composed of a rigid connection core and an adiabatic connection sleeve, effectively avoiding the problem of heat bridge effect commonly existing in the existing stainless steel connectors. Moreover, the connector of this application has both high shear strength and high tensile strength, improving the insulation performance and stability of the precast concrete insulation structure and extending the service life;

[0070] (4) By setting the thickness of the inner leaf wall panel to 1.5 times that of the outer leaf wall panel, the utility model can form a mechanical system of "rigid inside and flexible outside". The thicker inner leaf wall panel bears the structural load, while the thinner outer leaf wall panel releases the temperature stress through moderate flexible deformation, and can reduce the overall structural self-weight and improve the compressive capacity.

[0071] The above are only several embodiments of the present application, and do not impose any form of limitation on the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the scope of the technical solution of the present application, makes some changes or modifications using the technical content disclosed above, which are equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. A prefabricated concrete insulation structure, characterized in that: It includes a connecting piece, an inner leaf wall panel, an insulation panel, a strain relief module and an outer leaf wall panel which are connected in sequence; The connecting piece passes through the insulation board, and two ends of the connecting piece are respectively connected to the inner leaf wall board and the outer leaf wall board; The strain relief module is used to absorb the deformation of the outer blade wall panel caused by temperature change, so as to prevent the outer blade wall panel from pulling the insulation board and causing deformation of the insulation board; The strain relief module comprises an elastic layer, a buffer layer and a support layer arranged in sequence in a direction away from the outer blade wall panel; The elastic layer is used to absorb the deformation of the outer leaf wall panel through elastic deformation; The buffer layer is used to absorb the elastic deformation of the elastic layer; The support layer is used to provide support for the insulation board and limit deformation of the insulation board.

2. The prefabricated concrete insulation structure according to claim 1, characterized in that: The connecting piece comprises a rigid connecting core and a heat-insulating connecting sleeve sleeved on the rigid connecting core; The rigid connection core is used to resist the shear force generated by the lateral load to prevent the inner leaf wall panels, the insulation panels and the outer leaf wall panels from interlayer displacement; The heat-insulating connecting sleeve is used to reduce the heat transfer of the rigid connecting core and resist the tensile force generated by the axial load, so as to prevent the inner blade wall panel, the insulation board and the outer blade wall panel from being separated due to temperature deformation and axial load.

3. The prefabricated concrete insulation structure according to claim 2, characterized in that: Anti-slip modules are provided at both ends of the thermal insulation connection sleeve; The anti-slip module is used to increase the connection strength between the thermal insulation connection sleeve and the inner leaf wall panel and the outer leaf wall panel respectively.

4. The prefabricated concrete insulation structure according to claim 2, characterized in that: A waterproof coating is provided on a side of the outer leaf wall panel away from the strain relief module.

5. The prefabricated concrete insulation structure according to claim 2, characterized in that: The thickness of the inner leaf wall panel is 1.5 times that of the outer leaf wall panel.

6. The prefabricated concrete thermal insulation structure according to any one of claims 2 to 5, characterized in that: The inner leaf wall panel and the thermal insulation board are connected in a bite-engagement manner.

7. The prefabricated concrete insulation structure according to claim 6, characterized in that: The elastic layer is any one of high-elastic polyurethane foam, chlorinated butyl rubber foam or low-density polyethylene foam; The buffer layer is a rubber plate or a polyurethane elastomer plate; The support layer is any one of a light metal mesh, a glass fiber mesh, an aluminum alloy honeycomb panel or a carbon fiber reinforced plastic grid.

8. The prefabricated concrete thermal insulation structure according to claim 4, characterized in that: The material of the waterproof coating is any one of polymer cement-based waterproof coating, polyurethane waterproof coating or acrylic waterproof coating.

9. The prefabricated concrete thermal insulation structure according to claim 6, characterized in that: The material of the rigid connection core is any one of stainless steel, titanium alloy or high-strength glass fiber; The material of the thermal insulation connecting sleeve is any one of fiber reinforced composite material, basalt fiber reinforced plastic or aerogel composite material.

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