CN112324008A - Prefabricated external wall panel - Google Patents
Prefabricated external wall panel Download PDFInfo
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- CN112324008A CN112324008A CN202011255116.1A CN202011255116A CN112324008A CN 112324008 A CN112324008 A CN 112324008A CN 202011255116 A CN202011255116 A CN 202011255116A CN 112324008 A CN112324008 A CN 112324008A
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- reinforced concrete
- fiber cement
- external wall
- wall panel
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- 239000004568 cement Substances 0.000 claims abstract description 61
- 239000000835 fiber Substances 0.000 claims abstract description 61
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 58
- 239000012774 insulation material Substances 0.000 claims abstract description 38
- 238000004873 anchoring Methods 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 239000004567 concrete Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000010276 construction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011518 fibre cement Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/82—Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building
Abstract
A prefabricated external wall panel comprises a fiber cement panel layer, a heat insulation material layer, a reinforced concrete structure layer and connecting pieces; the fiber cement slab, the heat insulation material layer and the reinforced concrete structural layer are sequentially layered; the connecting piece is fixed on the fiber cement slab layer, penetrates through the heat insulation material layer and is embedded and anchored in the reinforced concrete structural layer; an overhanging anchoring steel bar is embedded in the reinforced concrete structure layer, one end of the overhanging anchoring steel bar is embedded in the reinforced concrete structure layer, and the other end of the overhanging anchoring steel bar extends out and extends towards the direction of the floor slab; the outer layer adopts the fiber cement slab layer, is fixed on the fiber cement slab layer by the connecting piece, penetrates through the heat insulation material layer and is embedded and anchored in the reinforced concrete structure layer, so that the structural strength of the external wall panel is ensured while the overall thickness of the external wall panel is effectively reduced; the outer wall system formed by the assembly has small load contribution to a building main body, reduces the requirement on a house foundation, has low plane coefficient, occupies less indoor space of a house, and has simple production process and high production efficiency.
Description
Technical Field
The invention relates to the technical field of external walls of fabricated buildings, in particular to a prefabricated external wall panel.
Background
The traditional residential building adopts a method of pouring concrete on site, the site construction of the main structure of the outer wall generally comprises the procedures of formwork support, reinforcing steel bar distribution, concrete pouring, formwork removal and the like, and then a series of complex work such as the construction of an outer wall heat-insulating seat, the construction of an outer decorative layer, the construction of inner decoration and the like is carried out; the construction mode has long period, needs a large amount of manpower, is serious in material waste and has more construction wastes.
With the development of house industrialization, prefabricated external wall panels and external wall systems suitable for the building construction and earthquake resistance regulations in China appear. For example, the sandwich heat-insulating prefabricated external wall panel is a typical prefabricated external wall panel and mainly comprises an outer side prefabricated concrete panel, heat-insulating waterproof mortar, an inner side prefabricated concrete panel, a connecting piece for connecting a main body structure and the like. The production method of the prefabricated external wall panel generally comprises the following steps: 1. preparing a table formwork, 2, placing an embedded part and a reinforcing mesh, 3, pouring concrete and vibrating, 4, placing a heat insulation layer, 5, penetrating a connecting piece through the heat insulation layer and lower-layer concrete, 6, integrally vibrating, 7, placing a reinforcing cage and the embedded part on the heat insulation layer, 8, pouring concrete, 9, vibrating, maintaining and demolding.
The sandwich heat-insulating prefabricated external wall panel is provided with the heat-insulating layer between the two layers of prefabricated concrete wallboards, the thickness of the wall body is large, the required materials and the required steel bars are large, the manufacturing cost is high, the plane coefficient is high, the indoor space of a house is occupied, the cost performance of purchasing the house is reduced, the self weight is large, and the burden of a house foundation is increased.
Disclosure of Invention
Therefore, it is necessary to provide a prefabricated external wall panel aiming at the problems of large wall thickness, high cost, high plane coefficient and occupation of indoor space of a house.
A prefabricated external wall panel comprises a fiber cement panel layer, a heat insulation material layer, a reinforced concrete structure layer and connecting pieces; the fiber cement slab, the heat insulation material layer and the reinforced concrete structural layer are sequentially layered; the connecting piece is fixed on the fiber cement slab layer, penetrates through the heat insulation material layer and is embedded and anchored in the reinforced concrete structural layer; the reinforced concrete structure layer is embedded with an overhanging anchoring reinforcing steel bar connected with a beam column or a floor slab of a building, one end of the overhanging anchoring reinforcing steel bar is embedded in the reinforced concrete structure layer, and the other end of the overhanging anchoring reinforcing steel bar extends out and extends towards the direction of the floor slab.
In one embodiment, the connector comprises a male connecting unit and a female connecting unit, the male connecting unit is fixed on the fiber cement slab and penetrates through the heat insulation material layer to be embedded into the reinforced concrete structural layer, and the female connecting unit is matched with the male connecting unit and is anchored to the reinforced concrete structural layer.
In one embodiment, the male connection unit is a bolt, a bolt cap of the male connection unit is embedded in the fiber cement slab layer from the outer side surface, a bolt body penetrates through the fiber cement slab layer and the heat insulation material layer to be embedded in the reinforced concrete structure layer, the bolt body is provided with an external thread, and the female connection unit comprises a nut in threaded fit with the bolt.
In one embodiment, the connector further comprises a locknut, which is arranged inside the fiber cement slab and is in threaded fit with the bolt to fasten the bolt to the fiber cement slab.
In one of the embodiments, the female connection unit is provided with an anchoring pawl.
In one embodiment, a heat insulation seat is arranged at one end of the connecting piece anchored on the reinforced concrete structure layer, and the heat insulation seat is wrapped at the end of the connecting piece.
In one embodiment, the thickness of the fiber cement board layer is 10-20mm, the thickness of the heat insulation material layer is 40-60mm, and the thickness of the reinforced concrete structure layer is 60-100 mm.
According to the prefabricated external wall panel, the outer layer is the fiber cement plate layer, is fixed on the fiber cement plate layer through the connecting piece, penetrates through the heat insulation material layer and is embedded and anchored in the reinforced concrete structure layer, so that the structural strength of the external wall panel is ensured while the overall thickness of the external wall panel is effectively reduced; the outer wall system formed by the assembly has small load contribution to a building main body, reduces the requirement on a house foundation, has low plane coefficient, occupies less indoor space of a house, and has simple production process and high production efficiency.
Drawings
FIG. 1 is a schematic structural view of a prefabricated external wall panel according to an embodiment;
FIG. 2 is a schematic view of a connector according to an embodiment;
fig. 3 is a schematic flow chart illustrating a method for manufacturing a prefabricated external wall panel according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a prefabricated external wall panel 100 includes a fiber cement slab layer 110, an insulation material layer 120, a reinforced concrete structure layer 130, and a connecting member 140; the fiber cement slab layer 110, the heat insulation material layer 120 and the reinforced concrete structure layer 130 are sequentially layered; the connecting member 140 is fixed to the fiber cement slab 110, penetrates through the thermal insulation material layer 120, and is embedded and anchored in the reinforced concrete structural layer 130; the reinforced concrete structure layer 130 is embedded with an overhanging anchoring steel bar 160 for connecting with a beam column of a building or a floor slab 200, one end of the overhanging anchoring steel bar 160 is embedded in the reinforced concrete structure layer 130, and the other end extends out and extends towards the floor slab 200.
The fiber cement board layer 110 is made of a fiber cement board, and the fiber cement board is a building material which is made of cement as a basic material, natural fibers and auxiliary materials through special technical processes of forming by a certain production process, pressurizing, steam curing and the like. The fiber cement board is used as the outer wall guard board of the outer wall board, and has the advantages of fire prevention, insulation, water and moisture prevention, heat insulation, sound insulation, light weight and high strength. In this embodiment, the fiber cement board layer 110 is a fiber cement board prepared in advance, and the outer side surface of the fiber cement board layer can be decorated by painting paint and the like according to the requirements of building design, and is cut into a proper size according to the size of the outer wall board for later use.
The thermal insulation material layer 120 can be made of a light foaming thermal insulation material, and in a specific implementation, the thermal insulation material layer 120 can be made of a polyurethane material, so that the polyurethane material has excellent thermal insulation and waterproof effects, is light in weight and low in density, and can effectively reduce the self weight of the prefabricated external wall panel 100.
The reinforced concrete structure layer 130 serves as a main structure body of the prefabricated external wall panel 100, and is formed by casting concrete on the surface of the heat insulation material layer 120 in situ, and reinforced concrete is mostly adopted.
As shown in fig. 2, since the connecting member 140 is fixed to the fiber cement slab 110, penetrates through the thermal insulation material layer 120, and is embedded and anchored in the reinforced concrete structural layer 130, the thermal insulation material layer 120 with excellent thermal insulation and waterproof effects but low structural strength is fastened between the fiber cement slab 110 and the reinforced concrete structural layer 130 through the connecting member 140; the fiber cement board is a class A non-combustible material, and the polyurethane material has good heat preservation and fire resistance as a foam layer, so that the external wall board not only has good decoration effect, but also has good heat preservation and fire resistance. And, because the outer wall face adopts the fiber cement board structural strength high, guaranteed the bulk strength of prefabricated outer wall panel 100 when attenuate thickness, so prefabricated outer wall panel 100 bulk thickness is thin, saves building material, has increased the house space, and the load contribution to the building subject is little, has reduced the requirement to the house foundation.
As shown in fig. 3, the prefabricated external wall panel 100 is produced by a method including the steps of:
s110: a bench mold is prepared. A bench mold of a corresponding specification is prepared according to the size of the prefabricated external wall panel 100.
S120: the fibre cement slab 110 is laid with the connectors 140 pre-placed. Wherein the outer facing layer of the fiber cement board is placed facing the surface of the form, i.e., facing downward, such that the connecting member 140 protrudes upward from the surface of the fiber cement board.
S130: a layer of insulating material 120 is laid. The insulation material is laid on the fiber cement slab 110 such that the connector 140 penetrates the insulation material. Because the thermal insulation material layer 120 is made of light foaming material, the thermal insulation material layer 120 can be pressed to be attached to the surface of the fiber cement board, so that the connecting piece 140 penetrates through the thermal insulation material layer 120 and extends out.
S140: and pouring the reinforced concrete structure layer 130. And paving a steel reinforcement framework on the surface of the heat insulation material layer 120, and pouring concrete to form a reinforced concrete structure layer 130 covering the end part of the connecting piece 140. The pouring of the reinforced concrete is a mature process, and the concrete process is not repeated here.
S150: and (5) curing and demolding to obtain the prefabricated external wall panel 100.
In one embodiment, the specific process of presetting the connection members 140 on the fiber cement slab 110 in step S120 may be: step-shaped or horn-shaped through holes with large outside and small inside are formed in the fiber cement board, the connecting pieces 140 matched with the through holes can penetrate through the outer side of the fiber cement board, and after the reinforced concrete structure layer 130 is poured, the fiber cement board layer 110 is restrained by the wall of the through holes and cannot be separated from the connecting pieces 140, so that the purpose of fastening connection is achieved.
If the prefabricated external wall panel 100 with the window opening or the bay window is produced, in step S120, a mold of the window frame or the bay window and other embedded parts are placed at corresponding positions, and then the fiber cement panel layer 110 with the connecting members 140 is laid.
In step S140, when the steel skeleton is laid, an overhanging anchoring bar 160 for connecting with a beam column of a building or a floor slab 200 is also embedded, one end of the overhanging anchoring bar 160 is embedded in the reinforced concrete structure layer 130, and the other end extends out and extends towards the floor slab 200. Of course, embedding overhanging anchor bars 160 is a common technique for prefabricating building materials and will not be described in detail herein.
By adopting the production method, the prepared prefabricated external wall body can be a flat plate or a bent plate. The method has simple process, simple and convenient construction and high processing efficiency, and is suitable for large-scale factory prefabrication production of the prefabricated external wall panel 100.
Referring to fig. 2, in one embodiment, the connecting member 140 includes a male connecting unit 141 and a female connecting unit 142, the male connecting unit 141 is fixed to the fiber cement slab 110 and penetrates through the thermal insulation layer 120 to be embedded into the reinforced concrete structural layer 130, and the female connecting unit 142 is matched with the male connecting unit 141 and is anchored to the reinforced concrete structural layer 130. In the production process, when the thermal insulation material layer 120 is laid, the connecting member 140 needs to pierce through the thermal insulation material layer 120, so that the diameter of the end part of the connecting member 140 extending into the reinforced concrete structure layer 130 is not too large, so that piercing is smooth, but the anchoring force between the connecting member 140 with the small end part diameter and the reinforced concrete structure layer 130 is small, which is not beneficial to the overall strength of the prefabricated external wall panel 100. Therefore, in this embodiment, the female connection unit 142 is matched with the male connection unit 141, and after the thermal insulation material layer 120 is laid and before the reinforced concrete structure layer 130 is poured, the female connection unit 142 is assembled at the end of the male connection unit 141 to increase the diameter of the end of the connection member 140, so as to increase the anchoring force with the reinforced concrete structure layer 130. Of course, it should be understood that the manner of matching the female connection unit 142 with the male connection unit 141 is not the only implementation manner for ensuring the anchoring strength between the connection element 140 and the reinforced concrete structure layer 130, and in other embodiments, the connection element 140 may be an integral connection rod element, and the anchoring strength between the connection element and the reinforced concrete structure layer 130 is improved by providing coarse grains or barbs on the peripheral surface of the rod element.
With continued reference to fig. 2, in a further embodiment, the female connection unit 142 may also be provided with an anchor detent 1423. By providing the anchoring pawls 1423 at the female connection unit 142, the anchoring strength of the connection member 140 and the reinforced concrete structure layer 130 is further improved.
When the connector 140 is in a manner that the male connection unit 141 and the female connection unit 142 are matched, in the production method of the prefabricated external wall, in step S120, the fiber cement slab 110 presets the male connection unit 141, and in step S140, the pouring of the reinforced concrete structure layer 130 may specifically be:
assembling a female connection unit 142 at the end of the male connection unit 141 penetrating the thermal insulation material;
laying a steel reinforcement framework on the surface of the heat insulation material layer 120;
and pouring concrete, and vibrating to form the reinforced concrete structure layer 130 covering the male connecting unit 141 and the female connecting unit 142.
Referring to fig. 2, in one embodiment, the male connection unit 141 is a bolt, a cap 1411 of the male connection unit is embedded in the fiber cement layer 110 from the outside, a bolt body 1412 penetrates through the fiber cement layer 110 and the thermal insulation layer 120 and is embedded in the reinforced concrete structure layer 130, the bolt body 1412 is provided with an external thread, and the female connection unit 142 includes a nut 1421 matched with the external thread of the bolt body 1412. The threaded fit is a fit mode with convenient processing, small assembly error and high assembly efficiency, the male connection unit 141 and the female connection unit 142 adopt the threaded fit mode, the production efficiency of the prefabricated external wall panel 100 is improved, and the external threads arranged on the surface of the male connection unit 141 increase the surface roughness of the male connection unit 141, so that the anchoring strength with the reinforced concrete structure layer 130 is improved. Of course, in other embodiments, a fitting manner such as a snap fit, an interference fit, etc. may also be adopted, and the male connection unit 141 and the female connection unit 142 may also be assembled.
In one embodiment, the connector 140 further includes a locknut 143, and the locknut 143 is disposed inside the fiber cement slab 110 and threadedly engages with the bolt to fasten the bolt to the fiber cement slab 110. Thus, in step S120, when the connector 140 is preset in the fiber cement board layer 110, after the bolt penetrates through the fiber cement board, the locknut 1421 is assembled on the bolt from the inner side of the fiber cement board layer 110 and is screwed, and the bolt is fastened to the fiber cement board layer 110 through the combined action of the locknut 1421 and the cap 1411 of the bolt, so that the bolt is prevented from loosening or coming out of the through hole of the fiber cement board layer 110 in the subsequent process, and the production reliability is improved.
In one embodiment, a heat insulation seat 1422 is disposed at one end of the connecting member 140 anchored to the reinforced concrete structure layer 130, and the heat insulation seat 1422 covers the end of the connecting member 140. In order to ensure the strength of the connecting member 140, the connecting member 140 may be made of a metal material, but the metal material has good thermal conductivity and is not beneficial to thermal bridge-breaking of the prefabricated external wall panel 100, so that the thermal insulating seat 1422 coated on the end of the connecting member 140 is disposed at the end of the connecting member 140 anchored to the reinforced concrete structure layer 130 to block outdoor heat transfer, thereby achieving the purpose of thermal bridge-breaking of the prefabricated external wall panel 100.
In an embodiment where the connection member 140 is screwed with the male connection unit 141 and the female connection unit 142, the thermal insulation seat 1422 is disposed on the female connection unit 142, that is, the female connection unit 142 includes a nut 1421 and a thermal insulation seat 1422. The nut 1421 may be made of a metal material matched to the bolt to ensure the connection strength of the bolt and the nut 1421. The heat insulation seat 1422 is wrapped around the periphery and bottom of the nut 1421 and can be made of materials with good heat insulation effect, such as phenolic resin materials, so that the connection strength is ensured, and the thermal bridge is broken. Further, the anchoring pawls 1423 may also be formed on the surface of the thermal insulation seat 1422, so as to enhance the anchoring strength with the reinforced concrete structure layer 130. Of course, it should be understood that in other embodiments, the heat insulation seat 1422 may be provided with a blind hole with internal threads matching with the bolt, that is, the female connection unit 142 is made of a material with good heat insulation performance.
In one embodiment, the thickness of the fiber cement slab layer 110 is 10-20mm, the thickness of the thermal insulation material layer 120 is 40-60mm, and the thickness of the reinforced concrete structural layer 130 is 60-100 mm. Through rationally setting up each layer thickness to and thickness proportion, when guaranteeing prefabricated wall body structural strength, reduce whole thickness.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A prefabricated external wall panel is characterized by comprising a fiber cement panel layer, a heat insulation material layer, a reinforced concrete structure layer and connecting pieces; the fiber cement slab, the heat insulation material layer and the reinforced concrete structural layer are sequentially layered; the connecting piece is fixed on the fiber cement slab layer, penetrates through the heat insulation material layer and is embedded and anchored in the reinforced concrete structural layer; the reinforced concrete structure layer is embedded with an overhanging anchoring reinforcing steel bar connected with a beam column or a floor slab of a building, one end of the overhanging anchoring reinforcing steel bar is embedded in the reinforced concrete structure layer, and the other end of the overhanging anchoring reinforcing steel bar extends out and extends towards the direction of the floor slab.
2. The prefabricated external wall panel according to claim 1, wherein the connecting member comprises a male connecting unit and a female connecting unit, the male connecting unit is fixed on the fiber cement slab and penetrates through the thermal insulation material layer to be embedded into the reinforced concrete structural layer, and the female connecting unit is matched with the male connecting unit and is anchored on the reinforced concrete structural layer.
3. The prefabricated external wall panel according to claim 2, wherein the male connection unit is a bolt, a bolt cap of the male connection unit is embedded in the fiber cement slab layer from the outer side surface, a bolt body penetrates through the fiber cement slab layer and the thermal insulation material layer to be embedded in the reinforced concrete structure layer, the bolt body is provided with an external thread, and the female connection unit comprises a nut in threaded fit with the bolt.
4. The prefabricated external wall panel according to claim 3, wherein the connecting member further comprises a locknut, which is disposed inside the fiber cement slab and threadedly engages with the bolt to fasten the bolt to the fiber cement slab.
5. The prefabricated external wall panel according to claim 2, wherein the female coupling unit is provided with anchoring pawls.
6. The prefabricated external wall panel as claimed in claim 1, wherein a heat insulation seat is disposed at one end of the connector anchored to the reinforced concrete structure layer, and the heat insulation seat is wrapped at the end of the connector.
7. The prefabricated external wall panel as claimed in claim 1, wherein the thickness of the fiber cement board layer is 10-20mm, the thickness of the thermal insulation material layer is 40-60mm, and the thickness of the reinforced concrete structural layer is 60-100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255116.1A CN112324008A (en) | 2020-11-11 | 2020-11-11 | Prefabricated external wall panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255116.1A CN112324008A (en) | 2020-11-11 | 2020-11-11 | Prefabricated external wall panel |
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| CN112324008A true CN112324008A (en) | 2021-02-05 |
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| CN202011255116.1A Pending CN112324008A (en) | 2020-11-11 | 2020-11-11 | Prefabricated external wall panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024055623A1 (en) * | 2022-09-13 | 2024-03-21 | 钟兵 | Formwork-free and decoration-free cast-in-place structure and construction method therefor |
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| CN204386078U (en) * | 2014-11-28 | 2015-06-10 | 中民筑友有限公司 | Insulating composite board and apply the wallboard of this sheet material |
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| CN204385947U (en) * | 2014-11-28 | 2015-06-10 | 中民筑友有限公司 | A kind of connector of precast wall panel |
| CN204590973U (en) * | 2015-03-11 | 2015-08-26 | 中民筑友有限公司 | With the prefabricated units of pre-buried doorframe or window frame |
| CN205475850U (en) * | 2016-02-07 | 2016-08-17 | 天津鑫德源特能源科技发展有限公司 | Cast -in -place dismounting -free assembled outer wall tectosome of building with heat preservation function |
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