CN215483730U - Prefabricated high-durability composite wallboard - Google Patents
Prefabricated high-durability composite wallboard Download PDFInfo
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- CN215483730U CN215483730U CN202121262921.7U CN202121262921U CN215483730U CN 215483730 U CN215483730 U CN 215483730U CN 202121262921 U CN202121262921 U CN 202121262921U CN 215483730 U CN215483730 U CN 215483730U
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Abstract
The utility model discloses a prefabricated high-durability composite wallboard, which comprises an inner leaf wall, an outer leaf wall, a middle sandwich layer and a connecting piece, wherein the inner leaf wall is a hollow structure; the middle sandwich layer is positioned between the inner leaf wall and the outer leaf wall, the connecting piece penetrates through the middle sandwich layer, two ends of the connecting piece are respectively anchored in the inner leaf wall and the outer leaf wall, the inner leaf wall and the outer leaf wall are both prefabricated UHPC (ultra high performance concrete) wall boards, and the connecting piece is a rod type FRP (fiber reinforced plastic), plate type FRP or stainless steel connecting piece. The outer leaf wall protective layer is made of UHPC material, and has high crack resistance and erosion resistance, and the inner leaf wall is made of UHPC material, so that the structural load is borne, and the mechanical property and the structural seismic resistance of the member are improved. The high-strength UHPC material greatly reduces the section thickness of the shear wall, improves the using space of a building, more importantly, the thinner wall plate reduces the size and the dead weight of components, and realizes the lightweight concept of the prefabricated composite wall plate. The connecting piece adopts the FRP connecting piece, and its intensity is high, anticorrosive and coefficient of thermal conductivity is low, and to a great extent has avoided connecting piece corrosion problem and heat bridge effect.
Description
Technical Field
The utility model relates to the technical field of prefabricated reinforced concrete sandwich composite wallboards, in particular to a prefabricated high-durability composite wallboard integrating structure earthquake resistance, heat preservation, heat insulation, light weight and durability, which is mainly applied to low-rise residential structures in earthquake regions.
Background
The fabricated concrete structure has the advantages of high component manufacturing quality, high on-site assembly construction speed, material saving, building waste reduction, construction noise reduction and the like, has good economic, environmental and social benefits, and conforms to the green, low-carbon and sustainable development concept of China. The prefabricated reinforced concrete sandwich composite wallboard is a building composite board formed by clamping heat-insulating materials in inner and outer reinforced concrete slabs and connecting the three layers of materials through connecting pieces, and has the advantages of convenience in construction, heat preservation, heat insulation, sound insulation, good fireproof performance and the like.
Outer leaf wall in traditional prefabricated reinforced concrete sandwich composite wall panel is ordinary reinforced concrete, and the three-layer material passes through oblique inserted bar and connects to form wholly, and the cost is lower relatively, but still has certain problem: (1) the common reinforced concrete inner and outer leaf wall boards have relatively large thickness and heavy self-weight components, and are inconvenient for transportation, hoisting and installation in the industrial building construction process; (2) the common prefabricated reinforced concrete wallboard has poor crack resistance, cracks are easy to generate in the construction process, the influence of the external environment on the anchoring end of the connecting piece and the intermediate heat-insulating material is difficult to eliminate, and the durability of the whole structure is influenced; (3) the reinforcing steel bar is used as a connecting piece, the heat conductivity coefficient of the reinforcing steel bar is high, so that a heat bridge effect is caused, and the heat insulation performance of the member is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prefabricated high-durability composite wallboard, which aims to solve the problems that components in the traditional prefabricated reinforced concrete sandwich composite wallboard are heavy and inconvenient to construct, the structural durability is influenced by poor crack resistance, the heat insulation performance of the components is reduced by the heat bridge effect of metal connecting pieces, and the like.
The technical scheme adopted by the utility model is as follows: a prefabricated high-durability composite wallboard comprises an inner leaf wall, an outer leaf wall, a middle sandwich layer and a connecting piece; the middle sandwich layer is located between the inner leaf wall and the outer leaf wall, the connecting piece penetrates through the middle sandwich layer, two ends of the connecting piece are respectively anchored in the inner leaf wall and the outer leaf wall, the inner leaf wall and the outer leaf wall are both prefabricated UHPC (ultra high performance concrete) wall boards, and the connecting piece is a rod-type FRP (fiber reinforced plastic), plate-type FRP or stainless steel connecting piece.
Preferably, the inner leaf wall and the outer leaf wall are both internally embedded with a net-shaped reinforcing layer.
Preferably, the reticular reinforcing layer in the inner leaf wall is a reinforcing mesh.
Preferably, the thickness of the outer leaf wall is more than 50mm, and the reticular reinforcing layer in the outer leaf wall is a reinforcing mesh.
Preferably, the reinforcing mesh in the outer leaf wall adopts a bidirectional configuration phi 6@ 200.
Preferably, the thickness of the outer leaf wall is larger than 20mm and smaller than 50mm, the net-shaped reinforcing layer in the outer leaf wall is a first steel wire mesh, and the first steel wire mesh is consistent with the outer leaf wall in size.
Preferably, the outer leaf wall is in with the anchor end of connecting piece carries out the local thickening of 15mm thick for the regional 100mm of center to at the pre-buried second wire net in thickening position be provided with on the middle sandwich layer with thickening position complex recess.
Preferably, the intermediate sandwich layer is a prefabricated heat-insulating material.
Preferably, the prefabricated heat insulation material is one of extruded polystyrene board, rock wool, expanded polystyrene and phenolic foam board.
Preferably, the connecting pieces are uniformly arranged in the plane of the middle sandwich layer, the distance is not more than 500mm multiplied by 500mm, and the depth of the anchoring end embedded into the inner leaf wall and the outer leaf wall is not less than 20 mm.
The utility model has the beneficial effects that:
(1) the outer leaf wall of the prefabricated high-durability composite wallboard provided by the utility model is made of UHPC material, has high crack resistance and erosion resistance, covers the outer side of the middle sandwich layer, and effectively protects the heat-insulating layer, thereby avoiding the maintenance process of the heat-insulating layer to a great extent, improving the durability of the composite wallboard and having certain economic benefit.
(2) The inner leaf wall of the prefabricated high-durability composite wallboard provided by the utility model is made of UHPC material, bears structural load and improves the mechanical property and the structural anti-seismic property of components. In addition, the high-strength UHPC material greatly reduces the section thickness of the shear wall, improves the using space of a building, more importantly, the size and the dead weight of a component are reduced by a thinner wallboard, and the lightweight concept of the prefabricated composite wallboard is realized.
(3) When the outer leaf wall is used for both protection and structural bearing, the outer leaf wall and the inner leaf wall share structural load, and compared with the common prefabricated reinforced concrete composite wallboard, the thickness of the inner leaf wall and the thickness of the outer leaf wall of the prefabricated high-durability composite wallboard are smaller under the same bearing capacity level, the thickness of the middle heat-insulation layer can be moderately increased, and the heat-insulation and sound-insulation performance of the composite wallboard is improved.
(4) The connecting piece adopts the FRP connecting piece, and its intensity is high, anticorrosive and coefficient of thermal conductivity is low, and to a great extent has avoided connecting piece corrosion problem and heat bridge effect, has improved the whole working property and the heat preservation heat-proof quality who accords with the wallboard.
Drawings
FIG. 1 is a plan view of a prefabricated high durability composite wall panel of example 1 of the present invention;
FIG. 2 is a cross-sectional view A-A of a prefabricated high durability composite wall panel of example 1 of the present invention;
FIG. 3 is a sectional view of B-B of a prefabricated high durability composite wall panel of example 1 of the present invention;
FIG. 4 is a plan view of a prefabricated high durability composite wall panel of example 2 of the present invention;
FIG. 5 is a C-C cross-sectional view of a prefabricated high durability composite wall panel of example 2 of the present invention;
figure 6 is a D-D cross-sectional view of a prefabricated high durability composite wall panel of example 2 of the present invention.
Reference numerals: 1. an outer leaf wall; 2. an intermediate sandwich layer; 3. an inner leaf wall; 4. a connecting member; 5. a reinforcing mesh; 6. a first steel wire mesh; 7. and the second steel wire mesh.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings, but embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1-3, a prefabricated high-durability composite wallboard comprises an inner leaf wall 3, an outer leaf wall 1, a middle sandwich layer 2 and a connecting piece 4. Middle sandwich layer 2 is located between interior leaf wall 3 and outer leaf wall 1, and connecting piece 4 passes middle sandwich layer 2 and the both ends of connecting piece 4 are anchored respectively in interior leaf wall 3 and outer leaf wall 1, and interior leaf wall 3 and outer leaf wall 1 are prefabricated UHPC wallboard, and connecting piece 4 is bar FRP or board-like FRP.
UHPC (Ultra-high Performance Concrete) is a special Concrete having Ultra-high strength, Ultra-low water absorption, Ultra-high durability, and high erosion resistance. The cement-based material and the metal fiber are combined, so that the organic balance of the compressive strength and the flexural strength is realized. The UHPC can effectively improve the tensile and shear resistance of the structural member, improve the fatigue resistance and durability and strengthen the shock resistance and energy consumption capability. FRP (Fiber Reinforced Polymer) is a composite material formed by weaving or winding high-performance glass fibers and gluing and solidifying the glass fibers with a matrix material such as epoxy resin. It has the features of low heat conductivity, high durability, low cost and high strength. The connecting piece 4 adopts an FRP connecting piece, has high strength, corrosion resistance and low heat conductivity coefficient, avoids the corrosion problem of the connecting piece and the heat bridge effect to a great extent, and improves the overall working performance and the heat insulation performance of the rechecked wallboard. In addition, the connecting member 4 may be a stainless steel connecting member, which is inferior to FRP in solving the problem of the thermal bridge effect, but has excellent corrosion resistance and increased strength, and the rod-type FRP, the plate-type FRP, or the stainless steel connecting member may be selected according to the situation during construction.
In the construction field, the inner leaf wall 3 is also called a structural wall, which is located indoors, and the outer leaf wall 1 is also called a protective wall, which is located outdoors.
In order to further increase the strength of the inner leaf wall 3 and the outer leaf wall 1, the mesh reinforcing layers are embedded in the inner leaf wall 3 and the outer leaf wall 1.
When the outer leaf wall 1 has both protection and structural bearing functions, the thickness of the outer leaf wall 1 is the same as or different from that of the inner leaf wall 3, the mesh-shaped reinforcing layer in the inner leaf wall 3 is a reinforcing mesh 5, and the diameter and the distance of the reinforcing mesh are calculated correspondingly according to the specification by combining with the actual engineering, for example, by adopting a bidirectional configuration phi 6@ 200. The thickness of the outer leaf wall 1 is at least more than 50mm, the reticular reinforcing layer in the outer leaf wall 1 is a reinforcing mesh 5, the diameter and the distance of the reinforcing mesh are calculated correspondingly according to the specification by combining with the actual engineering, for example, the bidirectional configuration phi 6@200 is adopted.
The middle sandwich layer 2 is a prefabricated heat-insulating material, and specifically, the prefabricated heat-insulating material is one of an extruded polystyrene board, rock wool, foamed polystyrene and a phenolic foam board.
The connecting pieces 4 are uniformly arranged in the plane of the middle sandwich layer 2, the distance is not more than 500mm multiplied by 500mm, and the depth of the anchoring end embedded into the inner leaf wall and the outer leaf wall is not less than 20 mm.
When the outer leaf wall 1 of the prefabricated high-durability composite wallboard provided by the embodiment is used for protection and structural bearing, the outer leaf wall 1 and the inner leaf wall 3 are used for bearing structural loads together, compared with the common prefabricated reinforced concrete composite wallboard, under the same bearing capacity level, the thickness of the inner leaf wall and the outer leaf wall of the prefabricated high-durability composite wallboard is smaller, the thickness of a middle heat insulation layer (namely a middle sandwich layer) can be moderately improved, and the heat insulation and sound insulation performance of the composite wallboard is improved.
Example 2
Referring to fig. 4-6, the present example provides a prefabricated high durability composite wall panel that differs from example 1 in the outer leaf wall 1. When the outer leaf wall 1 only has a protection function and does not participate in structural stress, no additional reinforcing bars are arranged in the wall. Considering that the protective layer can effectively protect the intermediate heat-insulating layer, the thickness of the outer leaf wall 1 is at least more than 20mm and less than 50 mm. Considering preventing outer leaf wall 1 at hoist and mount in-process fracture, pre-buried first wire net 6 in outer leaf wall 1, first wire net 6 is unanimous with outer leaf wall 1 size.
When the outer leaf wall 1 only does the protect function and does not participate in the structural stress, the anchoring end of the connecting piece 4 is used as the center, the thickness of the part is locally thickened by 15mm within the range of 100mm multiplied by 100mm, and the second steel wire mesh 7 is additionally arranged to meet the anchoring reliability of the connecting piece 4, and correspondingly, a groove matched with the thickened part is arranged on the middle sandwich layer 2.
The prefabricated high-durability composite wallboard provided by the embodiment has small wall thickness and greatly reduced manufacturing cost.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A prefabricated high-durability composite wallboard is characterized by comprising an inner leaf wall, an outer leaf wall, a middle sandwich layer and a connecting piece; the middle sandwich layer is located between the inner leaf wall and the outer leaf wall, the connecting piece penetrates through the middle sandwich layer, two ends of the connecting piece are respectively anchored in the inner leaf wall and the outer leaf wall, the inner leaf wall and the outer leaf wall are both prefabricated UHPC (ultra high performance concrete) wall boards, and the connecting piece is a rod-type FRP (fiber reinforced plastic), plate-type FRP or stainless steel connecting piece.
2. The prefabricated high-durability composite wall panel according to claim 1, wherein a net-shaped reinforcing layer is embedded in each of the inner leaf wall and the outer leaf wall.
3. The prefabricated high durability composite wall panel of claim 2 wherein the mesh reinforcement layer within the inner leaf wall is a mesh of steel reinforcement.
4. The prefabricated high-durability composite wall panel according to claim 3, wherein the thickness of the outer leaf wall is more than 50mm, and the mesh-like reinforcing layer inside the outer leaf wall is a reinforcing mesh.
5. The prefabricated high-durability composite wall panel according to claim 4, wherein the reinforcing mesh in the outer leaf wall adopts a bidirectional configuration of phi 6@ 200.
6. The prefabricated high-durability composite wallboard according to claim 3, wherein the thickness of the outer leaf wall is more than 20mm and less than 50mm, the reticular reinforcing layer in the outer leaf wall is a first steel wire mesh, and the first steel wire mesh is consistent with the outer leaf wall in size.
7. The prefabricated high-durability composite wallboard according to claim 6, wherein the outer leaf wall is locally thickened by 15mm in a 100mm x 100mm area by taking the anchoring end of the connecting piece as a center, a second steel wire mesh is embedded at a thickened part, and a groove matched with the thickened part is arranged on the middle sandwich layer.
8. The prefabricated high-durability composite wall panel according to claim 1, wherein the intermediate core layer is a prefabricated thermal insulation material.
9. The prefabricated high durability composite wall panel of claim 8, wherein said prefabricated insulation material is one of extruded polystyrene board, rock wool, expanded polystyrene, phenolic foam board.
10. The prefabricated high-durability composite wall panel according to any one of claims 1 to 9, wherein the connecting pieces are uniformly arranged in the plane of the intermediate sandwich layer, the spacing is not more than 500mm x 500mm, and the anchoring ends are embedded into the inner leaf wall and the outer leaf wall to a depth of not less than 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121262921.7U CN215483730U (en) | 2021-06-07 | 2021-06-07 | Prefabricated high-durability composite wallboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121262921.7U CN215483730U (en) | 2021-06-07 | 2021-06-07 | Prefabricated high-durability composite wallboard |
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| Publication Number | Publication Date |
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| CN215483730U true CN215483730U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121262921.7U Expired - Fee Related CN215483730U (en) | 2021-06-07 | 2021-06-07 | Prefabricated high-durability composite wallboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126148A (en) * | 2022-07-19 | 2022-09-30 | 四川大学 | Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof |
-
2021
- 2021-06-07 CN CN202121262921.7U patent/CN215483730U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126148A (en) * | 2022-07-19 | 2022-09-30 | 四川大学 | Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |