Ultra-thin near-zero-energy-consumption outer wall plate suitable for fabricated building

Abstract

The utility model provides an ultra-thin near-zero-energy-consumption outer wall plate suitable for a fabricated building, which comprises a concrete plate, a steel bar frame and a plurality of vacuum insulation plates, a plurality of closed cavities are arranged in the concrete plate, and the vacuum insulation plates are arranged in the closed cavities. Every two adjacent closed cavities are separated through a pouring belt. The concrete slab is made of autoclaved lightweight sand aerated concrete or autoclaved aerated concrete; the steel bar frame is embedded in the concrete slab; and the plurality of vacuum heat insulation plates are in one-to-one correspondence with the closed cavities, are arranged in the closed cavities and are attached to the concrete plate. According to the ultra-thin near-zero-energy-consumption outer wall plate suitable for the fabricated building, provided by the utility model, the autoclaved light sand aerated concrete or the autoclaved aerated concrete serves as inner and outer pages to provide basic heat preservation and structural support, and the vacuum insulation plate is arranged in the concrete plate to serve as a core of the core layer, so that the heat bridge effect is blocked; and the thickness of the wall body is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building material technical field, specifically relates to a kind of ultra-thin near zero-energy consumption outer wall panel suitable for fabricated building. BACKGROUND

[0002] Under the promotion of national double carbon strategy, the coordinated development of near zero-energy consumption building and fabricated building has become an important direction of the transformation of building industry.According to the construction standard of near zero-energy consumption building of the country, maximum improvement is needed in energy equipment, system efficiency, renewable energy utilization and energy consumption reduction, and improving the thermal performance of building envelope system is one of the main measures to reduce energy consumption.

[0003] As the core component of building envelope system, the thermal performance of outer wall is crucial.Specifically, in terms of outer wall panel of fabricated building, there are mainly two technical bottlenecks:

[0004] 1.The current envelope wall structure mainly adopts integrated insulation material and cast-in-place reinforced concrete wall foundation pull, which cannot meet the requirements of fabricated building.

[0005] 2.The conventional prefabricated outer wall panel (such as autoclaved lightweight aerated concrete panel) has a thermal conductivity of 0.13 W / (m·K), poor thermal performance, and is difficult to meet the actual project requirements.The existing improved products, such as low internal stress insulation composite wall panel and ceramic cotton self-insulation wall panel, have improved thermal performance, but still have defects according to the calculation of near zero-energy consumption standard.

[0006] According to the Technical Standard for Near Zero-Energy Consumption Buildings GB / T51350-2019, the average heat transfer coefficient of non-light-transmitting envelope structure is required to be 0.10~0.15 (in severe cold regions) and 0.15~0.20 (in cold regions) for residential buildings, and 0.10~0.25 (in severe cold regions) and 0.10~0.30 (in cold regions) for public buildings.

[0007] According to Hebei Province Passive Ultra-Low Energy Consumption Residential Building Energy Saving Design Standard DB13(J) / T8359-2020 and Passive Ultra-Low Energy Consumption Public Building Energy Saving Design Standard DB13(J) / T8360-2020, the average heat transfer coefficient of non-light-transmitting envelope structure is required to be ≤0.15 for residential buildings, and 0.10~0.20 (in severe cold region C) and 0.10~0.25 (in cold region) for public buildings.

[0008] Based on the above content, considering the energy saving standard requirements of various specifications and the actual project situation, the heat transfer coefficient limit of residential building is 0.15, and the heat transfer coefficient limit of public building is 0.20 as the calculation principle, several mainstream outer wall panel structures on the market are calculated, and the following results are obtained:

[0009] Residential buildings: low internal stress thermal insulation composite wallboard, ceramic cotton self-insulation wallboard needs to reach ≥400mm thickness (autoclaved lightweight aerated concrete board material needs to reach ≥1100mm thickness)

[0010] Public buildings: low internal stress thermal insulation composite wallboard, ceramic cotton self-insulation wallboard needs to reach ≥330mm thickness (autoclaved lightweight aerated concrete board material needs to reach ≥800mm thickness)

[0011] Therefore, the mainstream wallboard product on the market at present can cause the housing rate to be reduced, and seriously affect the indoor use space utilization efficiency, and therefore an ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings is urgently needed to fill the blank in this research field. Content of the utility model

[0012] The utility model provides a kind of ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings, to solve the technical problem that wallboard in prior art is thick when meeting the requirement of near-zero energy consumption, which leads to reduced housing rate and seriously affects the indoor use space utilization efficiency.

[0013] To achieve the above purpose, the utility model adopts the technical scheme that provides an ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings, comprising:

[0014] The concrete board is internally provided with a plurality of closed cavities, and adjacent two closed cavities are spaced apart by pouring a strip; the concrete board material is autoclaved lightweight aerated concrete or autoclaved aerated concrete;

[0015] The steel reinforcement frame is embedded in the concrete board; and

[0016] A plurality of vacuum insulation boards correspond to the closed cavities one by one and are arranged in the closed cavities and attached to the concrete board.

[0017] In one possible implementation of the ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings provided by the utility model, one side of the concrete board in the width direction is provided with a clamping groove, and the other side is provided with a protrusion, and the protrusion and the clamping groove are of a corresponding shape.

[0018] In one possible implementation of the ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings provided by the utility model, a plurality of closed cavities are arranged along the length direction of the concrete board.

[0019] In one possible implementation of the ultra-thin near-zero energy consumption external wallboard material suitable for fabricated buildings provided by the utility model, the length and width of the closed cavity are both less than or equal to 600mm.

[0020] In one possible implementation of the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model, the steel reinforcement frame includes two space frames and multiple tie bars. The two space frames are respectively arranged on both sides of the closed cavity, and the multiple tie bars are spaced apart between the two space frames, with both ends connected to the two space frames.

[0021] In one possible implementation of the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model, the tie bars are arranged to avoid the closed cavity.

[0022] In one possible implementation of the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model, both the space frame and the tie bars are made of galvanized steel bars.

[0023] In one possible implementation of the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model, the inner thickness of the concrete panel is 100-120mm, and the outer thickness is 80-100mm.

[0024] The beneficial effects of the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model are as follows: Compared with the prior art, the ultra-thin near-zero energy consumption exterior wall panel for prefabricated buildings provided by this utility model uses a concrete slab made of autoclaved aerated concrete or autoclaved aerated concrete as the inner and outer layers to provide basic thermal insulation and structural support, and sets a vacuum insulation board inside the concrete slab as the core layer to block the thermal bridging effect, thereby effectively reducing the thickness of the wall while meeting the near-zero energy consumption requirements; finally, the built-in steel reinforcement frame improves the bending and shear strength, ensuring that the mechanical properties of the ultra-thin wall panel meet the standards. Attached Figure Description

[0025] Figure 1 A longitudinal sectional view of an ultra-thin, near-zero energy consumption exterior wall panel suitable for prefabricated buildings, provided as an embodiment of this utility model.

[0026] Figure 2 For along Figure 1 Cross-sectional view of line AA in the middle;

[0027] Figure 3 For along Figure 1 Cross-sectional view of the middle BB line;

[0028] Figure 4 A schematic diagram of the structure of the space frame inside an ultra-thin near-zero energy consumption exterior wall panel suitable for prefabricated buildings, provided for an embodiment of this utility model;

[0029] Explanation of reference numerals in the attached figures:

[0030] 10, concrete slab; 11, pouring belt; 12, clamping groove; 13, protrusion;

[0031] 20, vacuum insulation board; 31, net rack; 32, tie bar. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application.

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0035] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not limiting. It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale, and that, for ease of discussion, the same reference numerals are used in different drawings to indicate the same or similar parts as understood by one of ordinary skill in the art. Techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but should be considered as part of the description of the present application. In all examples shown and discussed herein, any specific value should be interpreted as merely illustrative, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numerals and letters in the following drawings represent similar items, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0037] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways, and the spatial relative description used herein is interpreted accordingly.

[0038] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the protection scope of the present application.

[0039] Please refer to Figures 1 to 4 , the present application provides a thin type near zero energy consumption external wall panel suitable for prefabricated building will be described. The thin type near zero energy consumption external wall panel suitable for prefabricated building, including concrete slab 10, steel frame and a plurality of vacuum insulation board 20, concrete slab 10 inside is equipped with a plurality of closed cavity, between two adjacent closed cavity through the pouring belt 11 is separated; Concrete slab 10 material is autoclaved lightweight sand aerated concrete or autoclaved aerated concrete; Steel frame is embedded in concrete slab 10; A plurality of vacuum insulation board 20 and closed cavity one to one correspondence, set in the closed cavity, and concrete slab 10 is attached.

[0040] Specifically, the concrete slab 10 adopts AAC autoclaved lightweight sand aerated concrete, the thermal conductivity (dry state) is less than or equal to 0.13 W / (m·K), and the dry density is less than or equal to 525 kg / m³; The thermal conductivity of the vacuum insulation board 20 is less than or equal to 0.006 W / (m·K), and the dry density is less than or equal to 300 kg / m³.

[0041] The beneficial effect of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model is that: compared with the prior art, the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model, by taking the concrete panel 10 made of autoclaved lightweight aerated concrete or autoclaved aerated concrete as the inner and outer leaves to provide basic insulation and structural support, and by arranging the vacuum insulation panel 20 as the core layer in the concrete panel 10, the thermal bridge effect is blocked, and then under the premise of meeting the near-zero energy consumption requirement, the thickness of the wall is effectively reduced, the thickness of the outer wall of public buildings is directly reduced from 330mm to 215mm, the thickness of residential buildings is reduced from 400mm to 230mm, the thickness of the wall is reduced by about 40%-50%, and a large amount of indoor space is released; finally, the bending and shearing strength is improved through the built-in steel frame, and the mechanical properties of the super-thin wall panel meet the standards.

[0042] As shown in Figure 2 and Figure 3 in a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model, the concrete panel 10 is provided with a clamping groove 12 on one side in the width direction and a protrusion 13 on the other side, and the protrusion 13 and the clamping groove 12 are arranged in a complementary shape, so as to facilitate mutual clamping and positioning when assembling the wall.

[0043] As shown in Figure 1 and Figure 2 in a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model, the plurality of closed cavities are arranged along the length direction of the concrete panel 10.

[0044] Specifically, the plurality of closed cavities are arranged along the height direction of the concrete panel 10.

[0045] In a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model, the length and width of the closed cavity are both less than or equal to 600mm.

[0046] Further, as shown in Figure 1 and Figure 2 in a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the utility model, the steel frame includes two net frames 31 and a plurality of tie bars 32, the two net frames 31 are arranged on the two sides of the closed cavity, the plurality of tie bars 32 are arranged between the two net frames 31, and the two ends are connected with the two net frames 31.

[0047] Specifically, as shown in Figures 2 to 4As shown, in a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the present application, the tie bar 32 is arranged away from the closed cavity. Specifically, the tie bar 32 passes through the concrete body between the pouring belt 11 and the perimeter of the closed cavity.

[0048] In a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the present application, the net rack 31 and the tie bar 32 are both made of galvanized steel bars.

[0049] It should be noted that the net rack 31 and the tie bar 32 are made of cold-drawn low-carbon galvanized steel bars with a diameter of 6 mm, which enhances the mechanical properties and overall durability of the product. The length and width of the closed cavity are both less than or equal to 600 mm, so that the maximum allowable spacing of the tie bar 32 is greater than the gear of the vacuum insulation panel 20, so that the tie bar 32 does not need to pass through the vacuum insulation panel 20, reducing the construction difficulty and ensuring the heat preservation effect.

[0050] In a specific embodiment of the super-thin near-zero energy consumption outer wall panel suitable for fabricated buildings provided by the embodiment of the present application, the inner page thickness of the concrete panel 10 is 120 mm, and the outer page thickness is 80 mm.

[0051] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of ultra-thin near zero-energy consumption outer wall panel suitable for fabricated building, it is characterized by, The application relates to a concrete slab with a plurality of closed cavities, wherein two adjacent closed cavities are separated by a pouring belt; the concrete slab is made of autoclaved lightweight aerated concrete or autoclaved aerated concrete; a steel reinforcement frame is embedded in the concrete slab; and a plurality of vacuum insulation panels are arranged in the closed cavities and are attached to the concrete slab. The concrete slab is provided with a clamping groove on one side and a protrusion on the other side. The closed cavities are arranged along the length direction of the concrete slab. The length and width of the closed cavities are less than or equal to 600 mm. The steel reinforcement frame comprises two net frames and a plurality of tie bars, the two net frames are arranged on the two sides of the closed cavities, the plurality of tie bars are arranged between the two net frames, and the two ends of the tie bars are connected to the two net frames.

2. The ultra-thin near zero-energy external wall panel for fabricated buildings according to claim 1, characterized in that, The tie bars are arranged away from the closed cavities. 3.The ultra-thin near-zero energy consumption external wall panel for fabricated buildings of claim 1, wherein, The net frames and the tie bars are made of galvanized steel bars. 4.The ultra-thin near-zero-energy-consumption external wall panel for fabricated buildings of claim 1, wherein, The inner page thickness of the concrete slab is 100-120 mm, and the outer page thickness is 80-100 mm. 5.The ultra-thin near-zero-energy-consumption external wall panel for fabricated buildings of claim 1, wherein, ​ 6.The ultra-thin near-zero-energy-consumption external wall panel for fabricated buildings of claim 5, wherein, ​ 7.The ultra-thin near-zero-energy-consumption external wall panel for fabricated buildings of claim 5, wherein, ​ 8.The ultra-thin near-zero-energy-consumption external wall panel for fabricated buildings of claim 1, wherein, ​

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