CN115126148A - Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof - Google Patents
Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof Download PDFInfo
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- CN115126148A CN115126148A CN202210850228.4A CN202210850228A CN115126148A CN 115126148 A CN115126148 A CN 115126148A CN 202210850228 A CN202210850228 A CN 202210850228A CN 115126148 A CN115126148 A CN 115126148A
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- 238000009413 insulation Methods 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 239000011178 precast concrete Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000004567 concrete Substances 0.000 claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 10
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
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- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
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- 238000000034 method Methods 0.000 abstract description 6
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- 239000010410 layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/29—Producing shaped prefabricated articles from the material by profiling or strickling the material in open moulds or on moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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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
- E04B1/38—Connections for building structures in general
- E04B1/388—Separate connecting elements
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
Abstract
The invention discloses a bolt-connected precast concrete composite sandwich thermal insulation wallboard and a preparation method thereof. The concrete frame and the connecting piece connect the inner leaf concrete slab and the outer leaf concrete slab together to form the complete composite wallboard with the inner leaf concrete slab and the outer leaf concrete slab stressed cooperatively, have good mechanical and anti-seismic properties, and can be used as a shear wall in actual engineering. The concrete frame also has good waterproof and fireproof performance, and can effectively prevent water vapor from entering the heat-insulating layer; the groove and the bolt hole are reserved on the concrete frame, and the full-dry connection between the wallboards is realized, so that the full-assembly construction is realized, the construction process is simple, and the construction efficiency is high.
Description
Technical Field
The invention belongs to the field of assembled shear walls, relates to a heat-insulating wall board, and particularly relates to a bolt-connected precast concrete composite sandwich heat-insulating wall board and a preparation method thereof.
Background
With rapid economic development and social progress, the requirements of people on the residential comfort and low energy consumption are further improved, and in cold regions, heat preservation treatment is generally required to be carried out on the wall body of a building. The sandwich heat-insulating wall board has the defects that the outer skin of the building falls off, the fireproof performance is poor, the inner heat insulation is easy to damage in indoor decoration and the like in the traditional outer heat insulation, so that the sandwich heat-insulating wall board is produced at the same time. As an important component of a green building, the sandwich heat-insulation wall body with the heat-insulation plate integrated inside the wall body has the advantages of good heat-insulation, fire-prevention and durability performances, easy quality guarantee and the like, and is increasingly applied to engineering construction. At present, the bearing type sandwich thermal insulation wall body is single in type, the bearing type sandwich thermal insulation wall body is mostly in the form of an inner leaf concrete slab bearing, and the outer leaf concrete slab is only used as a protective layer of a thermal insulation board. In order to meet the requirement of the specification on the height-thickness ratio of the load-bearing wall body, the thickness of the wall body is thick, so that the self weight of the wallboard is large, the strength of the material cannot be fully exerted, the material waste is caused, and the economical efficiency is poor. Meanwhile, the sandwich wall boards of the type are usually connected by adopting cast-in-place concrete in practical application, so that the wet operation on site is more, the construction process is more complicated, the efficiency is not high, and the ribs are required on the periphery of the wall boards, so that the sandwich wall boards are inconvenient to stack and transport.
Disclosure of Invention
The invention aims to provide a bolt connection precast concrete composite sandwich heat-insulation wallboard and a preparation method thereof, and aims to solve the problems of the load-bearing sandwich heat-insulation wallboard used at present in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a bolt connection precast concrete composite sandwich thermal insulation wallboard comprises concrete slabs on two side faces, thermal insulation boards arranged in the middles of the concrete slabs on the two side faces, concrete frames adopted around the wallboard, and connecting pieces and fixing pieces arranged inside the wallboard.
The concrete plates comprise an outer leaf concrete plate positioned on the outer side and an inner leaf concrete plate positioned on the inner side;
the outer leaf concrete board and the inner leaf concrete board are equal in thickness, reinforcing meshes are arranged inside the outer leaf concrete board and the inner leaf concrete board, and the concrete strength grade is not less than C30.
Preferably, the outer leaf concrete plate and the inner leaf concrete plate are connected together through a concrete frame and a connecting piece to form a fully-composite heat-insulation and load-bearing integrated shear wall plate with the outer leaf concrete plate and the inner leaf concrete plate stressed cooperatively, and the shear wall plate can be used as a fabricated shear wall in actual engineering.
The connecting pieces are reinforced concrete ribs, steel bar trusses, Fiber Reinforced Plastic (FRP) grids or other connecting pieces with connecting effect.
The heat insulation plate is installed in the wallboard through a fixing piece.
And a groove and a bolt hole are reserved on the outer side surface of the concrete frame.
The heat insulation board is an expanded polystyrene heat insulation board (EPS), an extruded polystyrene heat insulation board (XPS) or other light heat insulation boards with heat insulation performance.
The wallboard is prefabricated in a factory, is constructed by adopting a fixed mould table or a flow mould table, and is prepared by the following specific steps:
s1, cleaning surface residues of a mould needed by a wallboard, assembling, cleaning a mould table at a template placing position, fixing the position of the template, and coating a release agent;
s2, placing a bound outer leaf concrete plate reinforcing mesh on a wallboard bottom die, wherein the reinforcing mesh comprises reinforcing steel bars of concrete frames around the wallboard, and uniformly arranging cushion blocks below the reinforcing mesh;
s3, connecting and fixing the connecting piece with a steel bar mesh of the outer leaf concrete plate, and binding lifting point steel bars or arranging threaded sleeves at the lifting point positions of the steel bar mesh of the outer leaf concrete plate;
s4, pouring concrete of the outer leaf concrete plate to a specified thickness, adopting vibration equipment to vibrate and compact, and then leveling the surface of the concrete;
s5, laying the heat insulation plate with holes formed at the positions where the fixing pieces are arranged in advance, and then inserting the fixing pieces into the holes of the heat insulation plate;
s6, sealing and filling gaps among the fixing piece, the connecting piece and the heat-insulation board with an isolating agent (foaming glue);
s7, placing the steel bar mesh of the bound inner leaf concrete plate in a template, and uniformly arranging a certain number of cushion blocks between the steel bar mesh and the heat preservation laminate;
s8, connecting the top of the connecting piece with a steel bar mesh of the inner leaf concrete plate, and installing and fixing a pipeline and a wire groove which need to be prefabricated in a wall body;
s9, pouring concrete of the outer leaf concrete plate and the frame to a specified thickness, adopting a vibrating device to vibrate and compact, reserving a groove and a bolt hole for placing a steel plate on the concrete frame, and then leveling and polishing the surface of the concrete;
s10, curing the wallboard under a standard condition or a steam curing condition, demolding after the demolding condition is met, and then continuously curing to the designed strength.
Preferably, in step S5, the surface of the insulation board is wetted with water before the insulation board is placed.
Preferably, step S7 is performed after the outer leaf concrete panel concrete is initially set.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the inner leaf concrete wall panel and the outer leaf concrete wall panel to cooperatively bear force, belongs to a heat-insulating and load-bearing integrated shear wall panel, and can be directly used as a shear wall in engineering. The invention meets the requirements of heat preservation, fire prevention, water prevention and durability, reduces the thickness of the wall body, reduces the self weight of the wall board and the material loss, improves the economic benefit, and is particularly suitable for being applied to rural residences and low-rise and multi-rise buildings;
2. the invention realizes the full-assembly construction, has simple construction process and less field wet operation, greatly improves the construction efficiency and the construction speed, and simultaneously responds to the national requirement on the building industrialization;
3. the wall boards are connected by adopting the steel plates and the high-strength bolts, and when an earthquake occurs, the anti-seismic performance of the wall board system can be ensured by buckling energy consumption of the connecting steel plates.
Drawings
FIG. 1a is a schematic diagram of a structural hierarchy of the present invention;
FIG. 1b is a schematic cross-sectional view of the present invention;
FIG. 2a is a perspective view of the present invention;
FIG. 2b is a profile side view of the structure of the present invention;
FIG. 2c is a top view of the structure profile of the present invention;
FIG. 3a is a schematic view of a connector according to the present invention;
FIG. 3b is a schematic view of a second embodiment of the connector of the present invention;
FIG. 3c is a third exemplary embodiment of a connector according to the present invention;
in the figure: 1. an outer leaf concrete slab; 2. a thermal insulation board; 3. a connecting member; 4. a fixing member; 5. an inner leaf concrete slab; 6. a concrete frame; 7. reinforcing mesh sheets; 8. reserving a groove; 9. and reserving bolt holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1a and fig. 1b, the present invention provides a technical solution: a bolt connection precast concrete composite sandwich heat insulation wallboard comprises concrete slabs on two side faces, a heat insulation board 2 arranged in the middle of the concrete slabs on the two side faces, a concrete frame 6 adopted around the wallboard, a connecting piece 3 arranged inside the wallboard and a fixing piece 4.
The concrete plates comprise an outer leaf concrete plate 1 positioned on the outer side and an inner leaf concrete plate 5 positioned on the inner side;
the thicknesses of the outer leaf concrete plate 1 and the inner leaf concrete plate 2 are equal, reinforcing meshes 7 are arranged in the outer leaf concrete plate and the inner leaf concrete plate, concrete reinforcing bars are determined by calculating the internal force design value of the wall plate and the construction measures of a shear wall, and the strength grade of the concrete is not less than C30.
The outer leaf concrete plate 1 and the inner leaf concrete plate 5 are connected together through the concrete frame 6 and the connecting piece 3 to form a completely-compounded heat-preservation bearing integrated shear wall plate with the outer leaf concrete plate 1 and the inner leaf concrete plate 5 stressed cooperatively, and the shear wall plate can be used as an assembled shear wall in actual engineering. Simultaneously, concrete frame 6 can also wrap up heated board 2 wherein to improve the waterproof performance of wallboard, avoid leading to the performance reduction of heated board because steam gets into in the heated board.
The connecting members 3 are reinforced concrete ribs, steel bar trusses, Fiber Reinforced Plastic (FRP) grids or other connecting members with connecting function, as shown in fig. 3a, 3b and 3c, and all of the connecting members 3 have good shear resistance, and can provide shear force transmission between the outer leaf concrete plate 1 and the inner leaf concrete plate 5, so as to realize a composite function.
Inside mounting 4 of wallboard adopts and cuts reinforcing bar or FRP rod for fixed heated board 2 prevents that heated board 2 from taking place to remove when pouring and vibrating inner leaf concrete slab 5 concrete.
As shown in fig. 2a to 2c, grooves 8 and bolt holes 9 are reserved on the outer side surface of the concrete frame 6, and during construction, the wall plates are connected in a full-dry mode in a steel plate-high-strength bolt connection mode, so that the connection mode is simple, full-assembly construction can be realized, the construction speed is high, and the efficiency is high.
The heat insulation board 2 in the sandwich wall board is an expanded polystyrene heat insulation board (EPS), an extruded polystyrene heat insulation board (XPS) or other light heat insulation boards with heat insulation performance, and the heat insulation board 2 is placed in the outer leaf concrete board 1 and the inner leaf concrete board 5 and has good fireproof performance.
The wallboard is prefabricated in a factory, is constructed by adopting a fixed mould table or a flow mould table, and is prepared by the following specific steps:
s1, cleaning surface residues of a mould needed by a wallboard, assembling, cleaning a mould table at a template placing position, fixing the position of the template, and coating a release agent;
s2, placing a reinforcement mesh 7 of the bound outer leaf concrete plate 1 on a bottom die of the wallboard, wherein the reinforcement mesh 7 comprises reinforcements of concrete frames 6 around the wallboard, and uniformly arranging cushion blocks below the reinforcement mesh 7 to ensure the thickness of a concrete protection layer outside the reinforcement mesh 7;
and S3, connecting and fixing the connecting piece 3 with the reinforcing mesh 7 of the outer leaf concrete plate 1, connecting the bottom of the FRP grid connecting piece with the reinforcing mesh 7 of the outer leaf concrete plate 1, placing reinforcing steel bars on the side die, and connecting the grid connecting piece with the reinforcing steel bars as erection ribs, so that the FRP grid is kept vertically placed and the position of the FRP grid is not changed in the process of pouring and vibrating the concrete of the outer leaf concrete plate 1, and the transverse reinforcing steel bars can be removed after the insulation boards are laid. And then binding lifting point steel bars or arranging a threaded sleeve at the lifting point position of the steel bar mesh 7 of the outer leaf concrete plate 1 so as to facilitate later demoulding and lifting transportation.
And S4, pouring concrete of the outer leaf concrete plate 1 to a specified thickness. And (5) vibrating and compacting by adopting a vibrating device, and then leveling the surface of the concrete. In the process, the pouring amount of the concrete must be strictly controlled, and the concrete must be shoveled out in time, so that the thickness of the outer leaf concrete plate 1 is strictly controlled, the vibration is uniform and sufficient, and the problems of honeycomb pitted surface and the like of the wall plate are avoided.
S5, lay the heated board 2 that has set up the trompil of mounting position department in advance, then insert mounting 4 in 2 trompils departments of heated board, heated board 2 must be with its surface wetting with the clear water before laying to guarantee that heated board 2 surface and 1 concrete surface of outer leaf concrete slab are fully laminated, make better bonding together between them.
S6, gaps between the fixing piece 4 and the connecting piece 3 and the heat insulation board 2 are sealed and filled with an isolating agent (foaming glue), the used foaming agent is polyurethane and other foaming agents with good heat insulation effects, and meanwhile, the filling quality must be guaranteed, so that the phenomenon that when the concrete of the inner leaf concrete plate 5 is poured, the concrete leaks to form a heat bridge is avoided, and the heat insulation effect of the wallboard is reduced.
S7, placing the steel bar mesh 7 of the bound inner leaf concrete plate 5 in the template, and uniformly arranging a certain number of cushion blocks between the steel bar mesh 7 and the heat insulation plate 2 to ensure the thickness of the concrete protection layer on the outer side of the steel bar mesh. The step is carried out after the concrete of the outer leaf concrete plate 1 is initially set, and the adhesive force exists between the concrete of the outer leaf concrete plate 1 and the insulation board 2, so that the insulation board is prevented from floating upwards when the concrete of the inner leaf concrete plate 5 is poured later.
And S8, connecting the top of the connecting piece 3 with the steel bar mesh 7 of the inner leaf concrete plate 5, and installing and fixing the pipeline and the wire groove which need to be prefabricated in the wall body. The position of pipeline and wire casing will be accurate, and the error of pre-buried position satisfies the construction and accepts the requirement, packs pipeline and wire casing simultaneously, avoids when pouring 5 concrete of interal lobe concrete slab, and the concrete enters into pipeline and wire casing.
S9, pour the concrete of inner lobe concrete slab 5 and frame 6, pour to appointed thickness, adopt the equipment of vibrating to vibrate closely knit, the vibration will be even and abundant to guarantee to pour the quality, avoid the wallboard honeycomb pitted surface scheduling problem to appear. Grooves 8 for placing steel plates and bolt holes 9 are reserved on the concrete frame 6 so as to realize connection between wall plates. And leveling the surface of the concrete, and then troweling and polishing.
S10, curing the wallboard under a standard condition or a steam curing condition, demolding after the demolding condition is achieved, and then continuously curing to the designed strength.
The concrete frame and the connecting piece can connect the inner and outer leaf concrete slabs together to form a complete composite shear wall plate, have good mechanical and anti-seismic properties, and can be used as a shear wall in actual engineering; meanwhile, the concrete frame also has good waterproof and fireproof performance, and can effectively avoid the performance reduction of the heat insulation plate caused by the water vapor entering the heat insulation layer; the groove and the bolt hole are reserved on the concrete frame, and the full-dry type connection between the wallboards is realized, so that the full-assembly type construction is realized, the construction process is simple, the construction efficiency is high, the functional requirements of rural residences and low and multi-storey buildings can be met, and the popularization and the use are facilitated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a bolted connection precast concrete compound with filling heat preservation wallboard which characterized in that: the wallboard comprises concrete plates on two side surfaces, insulation boards (2) arranged in the middle of the concrete plates on the two side surfaces, concrete frames (6) adopted around the wallboard, and connecting pieces (3) and fixing pieces (4) arranged in the wallboard; the concrete plates comprise an outer leaf concrete plate (1) positioned on the outer side and an inner leaf concrete plate (5) positioned on the inner side.
2. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: the thicknesses of the outer leaf concrete plate (1) and the inner leaf concrete plate (5) are equal, reinforcing meshes (7) are arranged inside the outer leaf concrete plate and the inner leaf concrete plate, and the concrete strength grade is not less than C30.
3. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: the outer leaf concrete plate (1) and the inner leaf concrete plate (5) are connected together through the concrete frame (6) and the connecting piece (3) to form a completely-composite heat-insulation bearing integrated shear wall plate with the outer leaf concrete plate (1) and the inner leaf concrete plate (5) stressed cooperatively, and the shear wall plate can be used as an assembled shear wall in actual engineering.
4. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: the connecting pieces (3) are reinforced concrete ribs, steel bar trusses, Fiber Reinforced Plastic (FRP) grids or other connecting pieces with connecting effect.
5. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: the heat preservation plate (2) is installed in the wallboard through a fixing piece (4).
6. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: and a groove (8) and a bolt hole (9) are reserved on the outer side surface of the concrete frame (6).
7. The bolted precast concrete composite sandwich thermal insulation wallboard of claim 1, characterized in that: the heat insulation board (2) is an expansion type polystyrene heat insulation board or an extrusion type polystyrene heat insulation board.
8. The preparation method of the bolted precast concrete composite sandwich thermal insulation wallboard according to any one of claims 1 to 7, characterized in that the wallboard is prefabricated in a factory and is constructed by adopting a fixed mold table or a flow mold table, and the preparation method comprises the following specific steps:
s1, cleaning surface residues of a mould needed by a wallboard, assembling, cleaning a mould table at a template placing position, fixing the position of the template, and coating a release agent;
s2, placing a steel bar mesh (7) of the bound outer leaf concrete plate (1) on the bottom die of the wallboard, wherein the steel bar mesh (7) comprises steel bars of concrete frames (6) on the periphery of the wallboard, and uniformly arranging cushion blocks below the steel bar mesh (7);
s3, connecting and fixing the connecting piece (3) with a steel bar net piece (7) of the outer leaf concrete plate (1), and binding lifting point steel bars or arranging threaded sleeves at the lifting point positions of the steel bar net piece (7) of the outer leaf concrete plate (1);
s4, pouring concrete of the outer leaf concrete plate (1) to a specified thickness, adopting vibration equipment to vibrate and compact, and then leveling the surface of the concrete;
s5, laying the heat insulation plate (2) which is provided with the hole at the position where the fixing piece (4) is arranged in advance, and then inserting the fixing piece (4) into the hole of the heat insulation plate (2);
s6, sealing and filling gaps between the fixing piece (4) and the insulation board (2) and gaps between the connecting piece (3) and the insulation board (2) with an isolating agent (foaming glue);
s7, placing the steel bar net piece (7) of the bound inner leaf concrete slab (5) in the template, and uniformly arranging a certain number of cushion blocks between the steel bar net piece (7) and the heat preservation layer plate (2);
s8, connecting the top of the connecting piece (3) with a reinforcing mesh (7) of the inner leaf concrete plate (5), and installing and fixing a pipeline and a wire groove which need to be prefabricated in a wall body;
s9, pouring concrete of the outer leaf concrete plate (1) and the frame (6) to a specified thickness, adopting vibration equipment to vibrate and compact, reserving a groove (8) for placing a steel plate and a bolt hole (9) on the concrete frame (6), and then leveling and polishing the surface of the concrete;
s10, curing the wallboard under a standard condition or a steam curing condition, demolding after the demolding condition is achieved, and then continuously curing to the designed strength.
9. The preparation method of the bolted precast concrete composite sandwich thermal insulation wallboard according to claim 8, characterized in that: in step S5, the surface of the insulation board (2) needs to be wetted with water before being placed.
10. The preparation method of the bolted precast concrete composite sandwich thermal insulation wallboard according to claim 1, characterized in that: step S7 is performed after the concrete of the outer blade concrete panel (1) is initially set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210850228.4A CN115126148A (en) | 2022-07-19 | 2022-07-19 | Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210850228.4A CN115126148A (en) | 2022-07-19 | 2022-07-19 | Bolt connection precast concrete composite sandwich thermal insulation wallboard and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115126148A true CN115126148A (en) | 2022-09-30 |
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| CN107288256A (en) * | 2017-07-04 | 2017-10-24 | 山东大学 | Light composite heat insulation outer wall plate, particular manufacturing craft and preparation method thereof |
| CN207314655U (en) * | 2017-09-28 | 2018-05-04 | 深圳市华阳国际工程设计股份有限公司 | Fill concrete wallboard in a kind of prefabricated thermal insulation |
| CN108301531A (en) * | 2018-03-19 | 2018-07-20 | 北京工业大学 | Assembled built-in heat insulation layer concrete composite wall-light steel frame-floor connecting node |
| CN108643383A (en) * | 2018-05-24 | 2018-10-12 | 中建科技有限公司 | The moisture-proof truss sandwich wallboard of assembled heat insulation suitable for severe cold and cold district |
| CN112482589A (en) * | 2020-10-28 | 2021-03-12 | 中铁第一勘察设计院集团有限公司 | Prefabricated externally-hung wallboard splicing piece of assembled that I shape steel sheet socket joint is fixed |
| CN215483730U (en) * | 2021-06-07 | 2022-01-11 | 四川大学 | Prefabricated high-durability composite wallboard |
| CN114562068A (en) * | 2022-03-18 | 2022-05-31 | 四川大学 | ECC reinforcing concrete sandwich heat preservation wallboard with high crack resistance and strong composite performance |
| CN217811906U (en) * | 2022-07-19 | 2022-11-15 | 四川大学 | Bolt connection precast concrete composite sandwich heat preservation wallboard |
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| CN107288256A (en) * | 2017-07-04 | 2017-10-24 | 山东大学 | Light composite heat insulation outer wall plate, particular manufacturing craft and preparation method thereof |
| CN207314655U (en) * | 2017-09-28 | 2018-05-04 | 深圳市华阳国际工程设计股份有限公司 | Fill concrete wallboard in a kind of prefabricated thermal insulation |
| CN108301531A (en) * | 2018-03-19 | 2018-07-20 | 北京工业大学 | Assembled built-in heat insulation layer concrete composite wall-light steel frame-floor connecting node |
| CN108643383A (en) * | 2018-05-24 | 2018-10-12 | 中建科技有限公司 | The moisture-proof truss sandwich wallboard of assembled heat insulation suitable for severe cold and cold district |
| CN112482589A (en) * | 2020-10-28 | 2021-03-12 | 中铁第一勘察设计院集团有限公司 | Prefabricated externally-hung wallboard splicing piece of assembled that I shape steel sheet socket joint is fixed |
| CN215483730U (en) * | 2021-06-07 | 2022-01-11 | 四川大学 | Prefabricated high-durability composite wallboard |
| CN114562068A (en) * | 2022-03-18 | 2022-05-31 | 四川大学 | ECC reinforcing concrete sandwich heat preservation wallboard with high crack resistance and strong composite performance |
| CN217811906U (en) * | 2022-07-19 | 2022-11-15 | 四川大学 | Bolt connection precast concrete composite sandwich heat preservation wallboard |
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