CN113550460A - Prefabricated heat-preservation superposed shear wall and manufacturing method thereof - Google Patents
Prefabricated heat-preservation superposed shear wall and manufacturing method thereof Download PDFInfo
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- CN113550460A CN113550460A CN202110954186.4A CN202110954186A CN113550460A CN 113550460 A CN113550460 A CN 113550460A CN 202110954186 A CN202110954186 A CN 202110954186A CN 113550460 A CN113550460 A CN 113550460A
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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
-
- 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
-
- 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
- E04C2/34—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 composed of two or more spaced sheet-like parts
-
- 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
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/46—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose specially adapted for making walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
Abstract
The invention relates to the technical field of prefabricated buildings, in particular to a prefabricated heat-insulation superposed shear wall and a manufacturing method thereof. According to the prefabricated heat-insulation superposed shear wall provided by the invention, the heat-insulation connecting piece is arranged, and two ends of the heat-insulation connecting piece are respectively and fixedly connected with the inner prefabricated wall board and the outer prefabricated wall board; meanwhile, a coarse aggregate area is formed on one side, facing the heat insulation board, of the inner prefabricated wall board, so that when concrete can be poured in the hollow cavity, coarse aggregates between new and old joint surfaces can be effectively occluded with each other, the shear strength and the friction force of the joint surfaces are increased, and effective connection of the node concrete is achieved.
Description
Technical Field
The invention relates to the technical field of prefabricated buildings, in particular to a prefabricated heat-insulation superposed shear wall and a manufacturing method thereof.
Background
The superposed shear wall is a concrete wall body with integral stress of prefabricated and cast-in-place concrete, which is formed by manufacturing inner and outer prefabricated concrete wallboards and a steel bar truss into a member with a cavity in a factory, and pouring the concrete in the cavity after the prefabricated and cast-in-place concrete wall is installed in place on site. The laminated shear wall is generally formed by connecting an inner prefabricated wall plate and an outer prefabricated wall plate by adopting steel bars, and a middle cavity part is used as a reserved cast-in-place layer; when the cavity of the laminated shear wall is internally provided with the heat insulation layer, the wall body is called as the heat insulation laminated shear wall, wherein the inner prefabricated wall plate and the post-cast concrete of the middle cavity are integrally stressed, and the outer prefabricated wall plate does not participate in structural stress and only plays a role in protecting the heat insulation layer.
In the prior art, because the internal space of the heat-preservation superposed shear wall is narrow, if the inner surface of the cavity is not treated, the inner surface of the precast slab is smooth; if a customized steel rake or broom is adopted for treatment, or stones are scattered, the inner surface or rough surface proportion of the precast slab cannot meet the standard requirements, or omission, or different depths, or insecure bonding of the stones can be caused, so that the delamination hidden danger of the cavity concrete and the precast slab can be caused, and the integral performance and the anti-seismic performance of the structure cannot be ensured after the concrete is cast in place.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the concrete surface of one side, facing the hollow cavity, of the inner prefabricated wall board in the prior art is smooth, so that the prefabricated heat-insulation superposed shear wall capable of increasing the roughness of the inner prefabricated wall board is provided.
The invention aims to solve another technical problem of overcoming the defect that the concrete surface of one side, facing a hollow cavity, of the inner prefabricated wall board in the prior art is smooth, so that the manufacturing method of the prefabricated heat-insulation superposed shear wall capable of increasing the roughness of the inner prefabricated wall board is provided.
In order to solve the technical problem, the invention provides a prefabricated thermal insulation superposed shear wall, which comprises:
internally prefabricating a wallboard;
the outer prefabricated wall plate and the inner prefabricated wall plate are arranged at intervals;
the first side surface of the heat insulation board is attached to the outer prefabricated wall board, a hollow cavity is formed between the second side surface of the heat insulation board and the inner prefabricated wall board, and the hollow cavity is suitable for filling cast-in-place concrete;
the two ends of the heat-insulation connecting piece are respectively fixedly connected with the inner prefabricated wall board and the outer prefabricated wall board, and the heat-insulation connecting piece is suitable for supporting the heat-insulation board and enabling the heat-insulation board and the inner prefabricated wall board to form the hollow cavity;
a coarse aggregate area is formed on one side, facing the heat insulation board, of the inner prefabricated wallboard, and the coarse aggregate area is formed by protruding a plurality of coarse aggregates from the upper surface of a concrete layer of the inner prefabricated wallboard.
Optionally, the average height of a plurality of the coarse aggregates exposed on the upper surface of the concrete layer is H1, the average depth of a plurality of the coarse aggregates embedded in the concrete layer is H2, and the average depth is 1/2 or less H2/(H1+ H2) or less 2/3.
Optionally, the heat preservation connecting piece includes:
one end of the supporting rod is arranged in the inner prefabricated wall plate, and the other end of the supporting rod penetrates through the heat-insulation plate and extends into the outer prefabricated wall plate;
the lower limiting piece is fixedly connected with the supporting rod and is suitable for supporting the second side surface of the heat-insulation plate;
and the upper limiting piece is fixedly connected with the supporting rod and is suitable for limiting the first side surface of the heat-insulation board.
The invention provides a method for manufacturing a prefabricated heat-preservation superposed shear wall, which comprises the following steps:
s1: pouring concrete of the inner prefabricated wallboard, and covering one end of the heat-insulation connecting piece;
s2: coating a surface retarder on the concrete surface of the inner prefabricated wallboard;
s3: installing insulation boards on the insulation connecting pieces, and enabling the insulation boards and the upper surface of the inner prefabricated wall board concrete to be arranged at intervals;
s4: pouring outer prefabricated wallboard concrete on the heat insulation plate, and covering the other end of the heat insulation connecting piece;
s5: maintaining;
s6: the upper surface of the inner prefabricated wall panel is washed to form a coarse aggregate area.
Optionally, the S3 further includes:
before the heat preservation plate is installed, the upper limiting piece of the heat preservation connecting piece is in a detachable state; after the heat preservation board is installed, the limiting part is installed.
Optionally, the inner prefabricated wall panel concrete includes: 320-360 parts of cement, 70-100 parts of fly ash, 700-800 parts of sand, 1000-1100 parts of stones, 5-8 parts of a water reducing agent and 170-180 parts of water, wherein the sand is medium sand, the water reducing agent is a polycarboxylic acid water reducing agent, the initial slump is 180 +/-20 mm, and the 30min slump is 160 +/-20 mm.
Optionally, the S1 further includes: pouring concrete of the inner prefabricated wallboard and then vibrating; the vibration time is 15-20 s, or 1/3-1/2 of the particle size of the stones is controlled to be immersed in the concrete to stop vibrating.
Optionally, the surface retarder includes one or more of sodium gluconate, sucrose, sodium tripolyphosphate, sodium monofluorophosphate, white sugar, methylcellulose, citric acid, sodium citrate, tartaric acid, and borax.
Optionally, the surface retarder is applied by one of brushing, rolling and spraying, and the dosage is 0.10kg/m2～0.30kg/m2(ii) a The coating time of the surface retarder is finished within 30-60 min after the vibration.
Optionally, in S6, the time for flushing the upper surface of the inner prefabricated wall panel is 12 to 24 hours, the inclination angle between the flushing water column and the upper surface of the inner prefabricated wall panel is 30 to 60 degrees, and the distance between the flushing head and the upper surface of the inner prefabricated wall panel is 0.8 to 1.5 m.
The technical scheme of the invention has the following advantages:
1. according to the prefabricated heat-insulation superposed shear wall provided by the invention, the heat-insulation connecting piece is arranged, and two ends of the heat-insulation connecting piece are respectively and fixedly connected with the inner prefabricated wall board and the outer prefabricated wall board; meanwhile, a coarse aggregate area is formed on one side, facing the heat insulation board, of the inner prefabricated wall board, so that when concrete can be poured in the hollow cavity, coarse aggregates between new and old joint surfaces can be effectively occluded with each other, the shear strength and the friction force of the joint surfaces are increased, and effective connection of the node concrete is achieved.
2. According to the prefabricated heat-insulation superposed shear wall provided by the invention, the lower limiting piece and the upper limiting piece are arranged on the heat-insulation connecting piece, so that the heat-insulation plate can be limited between the lower limiting piece and the upper limiting piece, the accurate positioning is ensured, the adjustment according to the thickness of the heat-insulation plate is convenient, and the applicability is improved.
3. The invention provides a method for manufacturing a prefabricated heat-preservation superposed shear wall, which comprises the steps of coating a surface retarder on the concrete surface of an inner prefabricated wall plate, utilizing the difference of the setting time of inner and outer concrete after the concrete of a component is poured, and using a high-pressure water gun to flush away floating ash on the surface layer before the concrete of the surface is initially set so as to expose coarse aggregate to form a natural-grade rough surface, thereby ensuring the mutual effective occlusion of the coarse aggregate between new and old joint surfaces, increasing the shear strength and the friction force of the joint surfaces, realizing the effective connection of node concrete, effectively solving the problem of smooth superposed surfaces existing in the production process of the prefabricated heat-preservation superposed shear wall, and ensuring the integral performance and the anti-seismic performance of the prefabricated heat-preservation superposed shear wall structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of a prefabricated thermal insulation composite shear wall according to the present invention;
FIG. 2 is a schematic view of a thermal connector of the present invention;
FIG. 3 is a schematic view of a base of the thermal connector of the present invention;
FIG. 4 is a schematic illustration of a coarse aggregate area according to the present invention;
FIG. 5 is a schematic view showing a state where 1/3 of the coarse aggregate of the present invention is highly submerged in a concrete layer;
FIG. 6 is a schematic view showing a state where 1/2 of the coarse aggregate of the present invention is highly submerged in a concrete layer;
FIG. 7 is a schematic view showing a state where 2/3 of the coarse aggregate of the present invention is highly submerged in a concrete layer;
FIG. 8 is a schematic view showing a state where the coarse aggregate of the present invention is completely submerged in the concrete layer;
fig. 9 is a top view of a coarse aggregate area of the present invention.
Description of reference numerals:
1-inner prefabricated wall board, 11-first cushion block, 12-coarse aggregate area, 121-surface retarder layer, 122-laitance layer, 123-coarse aggregate and 124-concrete layer;
2-insulation board, 5-hollow cavity, 6-reinforcement cage;
3-prefabricating a wallboard outside, 301-reinforcing steel bar meshes, 302-a second cushion block;
4-heat preservation connecting piece, 41-supporting rod, 42-upper limiting piece, 43-sleeve, 44-lower limiting piece, 45-base, 451-supporting rod hole and 452-reinforcing bar hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
Referring to fig. 1 to 3, the prefabricated thermal insulation laminated shear wall provided in this embodiment includes:
internally prefabricating a wallboard 1;
the outer prefabricated wall plate 3 is arranged at intervals with the inner prefabricated wall plate 1;
the first side surface of the heat insulation board 2 is attached to the outer prefabricated wall board 3, a hollow cavity 5 is formed between the second side surface of the heat insulation board and the inner prefabricated wall board 1, and the hollow cavity 5 is suitable for filling cast-in-place concrete;
two ends of the heat-insulation connecting piece 4 are respectively fixedly connected with the inner prefabricated wall board 1 and the outer prefabricated wall board 3, and the heat-insulation connecting piece 4 is suitable for supporting the heat-insulation board 2 and enabling the heat-insulation board 2 and the inner prefabricated wall board 1 to form the hollow cavity 5;
a coarse aggregate area 12 is formed on one side, facing the heat insulation board 2, of the inner prefabricated wall board 1, and the coarse aggregate area 12 is formed by protruding a plurality of coarse aggregates 123 from the upper surface of a concrete layer 124 of the inner prefabricated wall board 1.
A hollow cavity part is usually reserved between an inner prefabricated wall plate and an outer prefabricated wall plate of the prefabricated superposed shear wall to serve as a reserved cast-in-place layer; the inner and outer prefabricated wall panels are typically connected using rebar to space them apart and form a hollow cavity portion.
The prefabricated heat preservation superimposed shear wall needs to keep the middle cavity part between the inner prefabricated wall board and the outer prefabricated wall board as a reserved cast-in-place layer, and meanwhile, the heat preservation layer is added to improve the heat preservation effect of the prefabricated heat preservation superimposed shear wall. Referring to fig. 1, in this embodiment, the prefabricated heat-insulating superimposed shear wall sequentially includes an inner prefabricated wall panel 1, a hollow cavity 5, a heat-insulating plate 2, and an outer prefabricated wall panel 3 from bottom to top.
In order to ensure the formation of the middle cavity and the support of the heat insulation plate 2, the heat insulation connecting piece 4 is arranged, two ends of the heat insulation connecting piece 4 are respectively fixedly connected with the inner prefabricated wall plate and the outer prefabricated wall plate, the heat insulation connecting piece is suitable for supporting the heat insulation plate and enabling the heat insulation plate and the inner prefabricated wall plate to form the middle cavity, and the concrete pouring of the middle cavity in subsequent construction is facilitated. By adopting the special heat-insulating connecting piece, the problems of supporting, height control and connection of the inner prefabricated concrete wall panel and the outer prefabricated concrete wall panel of the heat-insulating panel in the production process can be solved, the structural strength is ensured, and the construction is convenient.
Preferably, a coarse aggregate area 12 is formed on one side of the inner prefabricated wall panel 1 facing the heat insulation board 2, the coarse aggregate area 12 is formed by a plurality of coarse aggregates 123 protruding out of the upper surface of a concrete layer 124 of the inner prefabricated wall panel 1, and the coarse aggregates are used as natural-graded coarse surfaces, so that the coarse aggregates between new and old joint surfaces can be effectively engaged with each other when concrete is cast in the hollow cavity 5, the shear strength and the friction force of the joint surfaces are increased, and the effective connection of the node concrete is realized. The problem that the laminated surface of the laminated shear wall and the heat-preservation laminated shear wall is smooth in the production process is effectively solved, the concave-convex depth of the coarse aggregate area 12 meets the requirements of relevant national standards, and the overall performance and the anti-seismic performance of the laminated shear wall structure are effectively guaranteed.
Preferably, through with the extending direction of heat preservation connecting piece 4 with the angle setting is personally submitted to interior prefabricated wallboard 1 place plane, thereby makes heat preservation connecting piece 4 is supporting behind heated board 2, can guarantee interior prefabricated wallboard 1 with cavity 5 in forming between the heated board 2, conveniently be under construction coarse aggregate region 12.
Preferably, the main body of the thermal insulation connecting member 4 is configured as a plate-shaped structure or a rod-shaped structure, and the extending direction of the thermal insulation connecting member 4 refers to the extending direction of the main body of the thermal insulation connecting member 4.
Preferably, the extending direction of the heat-insulating connecting piece 4 is arranged at a right angle to the plane of the inner prefabricated wall panel 1.
According to the prefabricated heat-insulation superposed shear wall provided by the embodiment, the heat-insulation connecting piece 4 is arranged, and two ends of the heat-insulation connecting piece are respectively and fixedly connected with the inner prefabricated wall board and the outer prefabricated wall board, and the heat-insulation connecting piece is suitable for supporting the heat-insulation board and forming the hollow cavity between the heat-insulation board and the inner prefabricated wall board, so that the heat-insulation board 2 is far away from the inner prefabricated wall board 1 under the supporting action of the heat-insulation connecting piece 4; meanwhile, a coarse aggregate area 12 is formed on one side, facing the heat insulation board 2, of the inner prefabricated wall board 1, so that when concrete is poured in the hollow cavity 5, coarse aggregates between new and old joint surfaces can be effectively occluded with each other, the shear strength and the friction force of the joint surfaces are increased, and effective connection of node concrete is achieved.
Specifically, as shown in fig. 4-9, the average height of a plurality of coarse aggregates 123 exposed on the upper surface of the concrete layer 124 is H1, and the average depth of a plurality of coarse aggregates 123 embedded in the concrete layer 124 is H2, wherein 1/2 is equal to or less than H2/(H1+ H2) is equal to or less than 2/3. The average depth of the coarse aggregate 123 embedded into the concrete layer 124 is ensured, so that the anchoring firmness of the coarse aggregate is improved, and the engaging force of the exposed portion of the coarse aggregate and the cavity concrete is ensured.
The ratio of the average height H1 of the coarse aggregates 123 exposed on the upper surface of the concrete layer 124 to the average depth H2 of the coarse aggregates 123 embedded in the concrete layer 124 is controlled within the range of 1/2-2/(H1 + H2) -2/3, so that the coarse aggregates between the new and old joint surfaces can be effectively ensured to be effectively meshed with each other, and the shear strength and the friction force of the joint surfaces are increased. That is, the form of the coarse aggregate 123 provided on the concrete layer 124 is preferably as shown in fig. 6 and 7, but should be avoided as much as possible in the forms shown in fig. 5 and 8.
Preferably, as shown in fig. 4, after the prefabricated thermal insulation composite shear wall is formed, a concrete layer 124, a laitance layer 122 and a surface retarder layer 121 are respectively formed on the inner prefabricated wall panel 1, wherein the coarse aggregate 123 is embedded in the concrete layer 124, and the height of the coarse aggregate 123 is higher than that of the laitance layer 122 and the surface retarder layer 121, so as to ensure the cleanliness of the outer surface of the coarse aggregate 123 and increase the engaging force with the cast-in-place concrete.
Preferably, the coarse aggregate 123 may be stone.
Specifically, prefabricated heat preservation coincide shear wall still includes:
reinforcing cage 6 forms cage-like structure by reinforcement and/or welding, reinforcing cage 6 at least partial set up in prefabricated wallboard 1, the rest set up in the cavity 5.
The reinforcement cage 6 is as the atress part behind prefabricated wallboard 1 and the cast in situ concrete combination in, improves bonding strength.
Preferably, a first cushion block 11 can be arranged below the reinforcement cage 6, and the reinforcement cage 6 is supported by the first cushion block 11 to control the thickness of the concrete protective layer.
Specifically, the heat-insulating connecting member 4 includes:
one end of the supporting rod 41 is arranged in the inner prefabricated wall plate 1, and the other end of the supporting rod passes through the heat-insulating plate 2 and extends into the outer prefabricated wall plate 3;
a lower limiting member 44 fixedly connected to the supporting rod 41 and adapted to support a second side surface of the insulation board 2;
and the upper limiting piece 42 is fixedly connected with the supporting rod 41 and is suitable for limiting the first side surface of the heat insulation plate 2.
The prefabricated heat preservation superimposed shear wall that this embodiment provided, through set up down spacing 44 and last spacing 42 on the heat preservation connecting piece 4, can be with 2 spacing 44 and last spacing 42 down between, guarantee the location accuracy, conveniently adjust according to the thickness of insulation board, improve the suitability.
Preferably, the total length of the heat-insulating connecting piece is 250-350 mm, and the supporting rod 41 and the position corresponding to the upper limiting piece 42 are provided with external threads, so that the heat-insulating connecting piece is conveniently connected with the upper limiting piece 42, and the height of the upper limiting piece 42 can be conveniently adjusted in a stepless manner.
Specifically, the heat-insulating connecting member 4 further includes:
the base 45 is connected with one end part of the support rod 41 arranged in the inner prefabricated wall panel 1, and the base 45 and the support rod 41 are arranged at an angle;
the base 45 be suitable for with set up in prefabricated wallboard 1 steel reinforcement cage 6 fixed connection, perhaps, 41 distances of bracing piece the base 45 be 10mm ~ 30 mm's position department be suitable for with set up in prefabricated wallboard 1 steel reinforcement cage 6 fixed connection.
Preferably, the base 45 may be one of circular, rectangular, triangular or polygonal; the base 45 is preferably perpendicular to the support rod 41, so that the contact area between the heat-insulating connecting piece 4 and the inner prefabricated wall board 1 is increased, and the connection strength is improved.
Preferably, as shown in fig. 3, the base 45 may be configured as a circular sheet-shaped structure, a supporting rod hole 451 suitable for the supporting rod 41 to penetrate is formed in a central region of the circular sheet, and a plurality of reinforcement penetrating holes 452 are distributed in a circumferential direction of the circular sheet, so that the reinforcing steel bar can penetrate and be connected with the base 45, thereby improving the connection firmness of the base 45 and the reinforcement cage 6.
The prefabricated heat preservation superimposed shear wall that this embodiment provided, through with heat preservation connecting piece 4 and 6 fixed connection of steel reinforcement cage, and carry out fixed connection with heat preservation connecting piece 4 and steel reinforcement cage 6 before concrete precast wall board is pour including specifically, thereby guarantee heat preservation connecting piece 4 and steel reinforcement cage 6's linkage effect, in inserting heat preservation connecting piece 4 in precast wall board 1 before the concrete of precast wall board including avoiding, make steel reinforcement cage 6 and interior precast wall board regard as the direct stress part of fixed heat preservation connecting piece 4 simultaneously, and the joint strength is improved, guarantee the roughness of heated board and the thickness of interior precast wall board, avoid producing adverse effect to pouring of cavity concrete.
Preferably, the thermal insulation connecting piece 4 further comprises: and the sleeve 43 is arranged between the lower limiting piece 44 and the upper limiting piece 42, so that the sleeve 43 is used as a contact unit with the heat-insulation plate 2, and the fixing firmness of the heat-insulation plate 2 is improved.
Preferably, the support rod 41 is made of metal, the sleeve 43 is made of nylon, and the support rod 41 can be integrally formed or spliced in an assembling manner.
Specifically, the lower stopper 44 is configured in a perforated circular plate shape, a zigzag shape or a cross shape;
when the lower limiting piece 44 is in a shape like a Chinese character 'mi' or a cross, the lower limiting piece 44 is suitable for being fixedly connected with the reinforcement cage 6 arranged in the hollow cavity 5.
Preferably, when spacing 44 constructs for rice font or cross down, can reduce the use of material on the one hand, reduce cost, and on the other hand can improve spacing 44 and 6 fixed connection's convenience down, simultaneously, when spacing 44 constructs for rice font or cross down, spacing 44 is less than porous disc shape to the area of hiding of heated board 2 down to increase cast in situ concrete and heated board 2's area of contact, improve the joint strength of structure.
Specifically, 3-6 heat-insulating connecting pieces 4 are uniformly distributed in each square meter of the heat-insulating plate 2; and the distance from the lower limiting piece 44 of the heat-insulating connecting piece 4 close to the edge of the heat-insulating plate 2 is less than Amm, wherein A is more than or equal to 100 and less than or equal to 300.
Specifically, the coarse aggregate region 12 is disposed at an edge region of the first side surface of the inner prefabricated wall panel 1, and the coarse aggregate region 12 is disposed around the first side surface of the inner prefabricated wall panel 1.
The prefabricated heat preservation superimposed shear wall that this embodiment provided, through with coarse aggregate region 12 set up in the marginal area of the first side surface of interior prefabricated wallboard 1 to specifically be coarse aggregate region 12 encircles the first side surface a week of interior prefabricated wallboard 1 sets up, thereby when two adjacent prefabricated heat preservation superimposed shear walls connect, through set up the splice bar between two adjacent prefabricated heat preservation superimposed shear walls, coarse aggregate region 12 corresponds the set position of splice bar, thereby increases the concrete snap-in force of prefabricated heat preservation superimposed shear wall marginal area, guarantees the firm in connection degree of splice bar.
Specifically, the proportion of the coarse aggregate region 12 with respect to the first side surface of the inner prefabricated wall panel 1 is greater than 60%. Therefore, when concrete is poured in the hollow cavity, coarse aggregates between the new joint surface and the old joint surface are mutually and effectively occluded, the shear strength and the friction force of the joint surfaces are increased, and the effective connection of the node concrete is realized.
Specifically, a reinforcing mesh 301 is arranged in the outer prefabricated wall panel 3, and the supporting rods 41 are fixedly connected with the reinforcing mesh 301 in the outer prefabricated wall panel 3.
Preferably, reinforcing bar net piece 301 and bracing piece 41 fixed connection to guarantee the firm in connection degree of heated board 2 and outer prefabricated wallboard 3, make the whole atress of prefabricated heat preservation superimposed shear wall good, prevent the pine and take off.
Preferably, as shown in fig. 1, a second spacer block 302 may be disposed on the upper surface of the thermal insulation plate 2, so as to support the steel mesh 301, ensure the position of the steel mesh 301 in the outer prefabricated wall panel 3, and control the thickness of the concrete protective layer.
Example two
Referring to fig. 1, the present embodiment provides a method for manufacturing a prefabricated thermal insulation laminated shear wall, including:
s1: pouring concrete of the inner prefabricated wallboard, and covering one end of the heat-insulation connecting piece;
s2: coating a surface retarder on the concrete surface of the inner prefabricated wallboard;
s3: installing insulation boards on the insulation connecting pieces, and enabling the insulation boards and the upper surface of the inner prefabricated wall board concrete to be arranged at intervals;
s4: pouring outer prefabricated wallboard concrete on the heat insulation plate, and covering the other end of the heat insulation connecting piece;
s5: maintaining;
s6: the upper surface of the inner prefabricated wall panel is washed to form a coarse aggregate area.
Specifically, the S3 further includes:
before the heat preservation plate 2 is installed, the upper limiting piece 42 of the heat preservation connecting piece 4 is in a disassembly state; after the heat insulating plate 2 is attached, the upper stopper 42 is attached.
Preferably, before the heat preservation plate 2 is installed, the upper limiting piece 42 of the heat preservation connecting piece 4 is in a detachable state; after the inner prefabricated wallboard concrete is poured, the heat insulation board 2 can be arranged on the support rod 41 of the heat insulation connecting piece 4 in a penetrating mode, the heat insulation board 2 is supported by the lower limiting piece 44 of the heat insulation connecting piece 4, and the upper limiting piece 42 is installed; further, sealing the abutted seams of the adjacent insulation boards 2; the joint seam of the heat insulation board is filled by adopting masking paper adhesion or sealant and a PE rod.
Before the insulation board 2 is arranged on the support rod 41 in a penetrating mode, firstly, the insulation board is required to be holed according to the position of an insulation connecting piece; then, the heat insulation board 2 is arranged on the support rod 41 of the heat insulation connecting piece 4 in a penetrating mode, the lower limiting piece 44 of the heat insulation connecting piece 4 supports the heat insulation board 2, the upper limiting piece 42 is installed, and the height of the heat insulation board 2 can be changed by adjusting the positions of the lower limiting piece 44 and the upper limiting piece 42.
Preferably, before S4, the method further includes: the bracing piece 41 is kept away from one end ligature reinforcing bar net piece 301 of interior prefabricated wallboard concrete to make outer prefabricated wallboard concrete cladding reinforcing bar net piece 301, simultaneously, because reinforcing bar net piece 301 is fixed with bracing piece 41, thereby guarantee the firm in connection degree of heated board 2 and outer prefabricated wallboard 3, make the whole atress of prefabricated heat preservation superimposed shear wall good, prevent the pine and take off.
Preferably, after the S4, the method further includes: and vibrating the poured concrete of the outer prefabricated wallboard so as to enable the concrete to be more compact.
According to the method for manufacturing the prefabricated heat-preservation superposed shear wall, the surface retarder is coated on the concrete surface of the inner prefabricated wall board, the difference between the setting time of the inner layer concrete and the setting time of the outer layer concrete after the member concrete is poured is utilized, the surface floating ash is flushed by using the high-pressure water gun before the surface concrete is initially set to expose the coarse aggregate, so that a natural-grade rough surface is formed, the mutual effective occlusion of the coarse aggregate between a new joint surface and an old joint surface is ensured when the concrete is poured for the second time, the shearing strength and the friction force of the joint surfaces are increased, the effective connection of the joint concrete is realized, the problem that the superposed surface of the prefabricated heat-preservation superposed shear wall is smooth in the production process is effectively solved, and the overall performance and the anti-seismic performance of the prefabricated heat-preservation superposed shear wall structure are ensured.
Before the S1, the method may further include:
s11: cleaning the mould and spraying a release agent. Thereby conveniently molding the prefabricated heat-preservation superposed shear wall by means of the mold. The S11 specifically includes:
s101: cleaning the die table;
s102: marking on a die table to determine the positions of a side die and an embedded part;
s103: installing a side die with a hole;
s104: and spraying a release agent on the inner wall of the side die and the die table surface.
The mould comprises the mould platform and the side mould.
Preferably, the side forms are provided with holes, so that air circulation can be promoted, the consistency of the strength curing conditions of the upper concrete and the lower concrete is ensured, the curing time is saved, and the prefabricated heat-preservation superposed shear wall can be rapidly demoulded. The side forms are provided with holes which can be arranged above the concrete of the inner prefabricated wall plate, so that the concrete is prevented from blocking the holes.
Preferably, the side forms can be made of wood molds, steel molds or aluminum molds, and the openings can be designed to be one or more of round, rectangular, trapezoidal, triangular, polygonal or irregular shapes.
Preferably, the heat-insulating connecting piece can be fixedly connected with the reinforcement cage 6 and the embedded part, the reinforcement cage is formed by binding, and a cushion block is arranged between the reinforcement cage and the mould table, so that the position of the reinforcement cage in the concrete is controlled, and the thickness of a concrete protective layer is ensured; additionally, the upper surface of the heat insulation plate 2 can be provided with a second cushion block 302, so that the reinforcing mesh piece 301 is supported, the arrangement position of the reinforcing mesh piece 301 in the outer prefabricated wall plate 3 is ensured, and the thickness of the concrete protection layer is controlled. Through with fashioned steel reinforcement cage 6 and heat preservation connecting piece 4, built-in fitting fixed connection, carry out the pouring of interior prefabricated wallboard concrete afterwards, thereby carry out fixed connection with heat preservation connecting piece 4 and steel reinforcement cage 6 in advance, guarantee the connection effect of heat preservation connecting piece 4 and steel reinforcement cage 6, avoid inserting heat preservation connecting piece 4 in interior prefabricated wallboard 1 before the concrete initial set of interior prefabricated wallboard, make steel reinforcement cage 6 and interior prefabricated wallboard regard as the direct stress component of fixed heat preservation connecting piece 4 simultaneously, the joint strength is improved, guarantee the roughness of heated board and the thickness of interior prefabricated wallboard, avoid producing adverse effect to the pouring of cavity concrete.
Specifically, the interior precast panel concrete includes: 320-360 parts of cement, 70-100 parts of fly ash, 700-800 parts of sand, 1000-1100 parts of stones, 5-8 parts of a water reducing agent and 170-180 parts of water, wherein the sand is medium sand, the water reducing agent is a polycarboxylic acid water reducing agent, the initial slump is 180 +/-20 mm, and the 30min slump is 160 +/-20 mm.
Preferably, the sand rate is controlled to be 38% -42%, the sand rate can be adjusted according to the thickness degree of the sand, and the sand rate is a key factor influencing the final surface exposed stone effect.
Specifically, the S1 further includes: pouring concrete of the inner prefabricated wallboard and then vibrating; the vibration time is 15-20 s, or 1/3-1/2 of the particle size of the stones is controlled to be immersed in the concrete to stop vibrating.
Preferably, the vibration time is controlled within 15-20 s, and the specific criterion is that no air bubbles emerge from the surface. It should be noted that when the vibrating time is less than the range, the coarse aggregate in the concrete is suspended on the surface, the internal structure is loose, the strength can not meet the requirement, and the surface retarder is coated at the moment, so that the surface retarder can not effectively permeate into the laitance layer, and can be washed away together with the stones. When the vibrating time is longer than the range, the concrete is layered, stones are completely sunk into the concrete, the laitance layer is thicker (larger than 5mm), the strength of the lower-layer concrete is higher than that of the laitance layer, the surface retarder is coated at the moment, the surface retarder penetrates into the laitance layer less (2 mm-5 mm), and the stone exposure effect cannot occur after scouring.
Specifically, the surface retarder comprises one or more of sodium gluconate, sucrose, sodium tripolyphosphate, sodium monofluorophosphate, white sugar, methylcellulose, citric acid, sodium citrate, tartaric acid and borax.
Specifically, the surface retarder is formed by one of brushing, rolling and spraying, and the dosage is 0.10kg/m2～0.30kg/m2(ii) a The coating time of the surface retarder is finished within 30-60 min after the platform is vibrated.
Preferably, the coating time of the surface retarder is finished within 30min after the vibration is finished, and the coating time is not more than 60min, and the initial setting of the concrete surface is finished beyond the coating time, so that the surface coagulant is difficult to permeate.
Preferably, the surface retarder is applied by one of brushing, rolling and spraying, and in the three construction modes of brushing, rolling and spraying, the permeation effect of the brushing and rolling is better than that of the spraying, but the uniformity of the brushing and rolling is lower than that of the spraying, and the labor intensity of the brushing and rolling is higher than that of the spraying. The penetration depth of the surface retarder is generally 5 mm-10 mm by adopting a brush coating mode and a roller coating mode, and the penetration depth of the surface retarder is generally 2 mm-5 mm by adopting a spraying mode.
Preferably, the treatment area of the surface retarder is generally required to be not less than 80% of the front area of the wallboard, so that reliable bonding of the inner prefabricated wallboard and the cavity concrete can be effectively ensured.
Specifically, in S6, the time for flushing the upper surface of the inner prefabricated wall panel is 12-24 hours, the inclination angle between the flushing water column and the upper surface of the inner prefabricated wall panel is 30-60 degrees, and the distance between the flushing head and the upper surface of the inner prefabricated wall panel is 0.8-1.5 m.
Preferably, a high-pressure water gun can be adopted for flushing, the flushing time is generally 12-24 h and should not exceed 48h, the strength of the laitance layer is 2.0-3.0 MPa, and the bonding strength with the concrete layer is 0.05-0.2 MPa. The time for finishing the penetration of the surface retarder is generally 3-5 h after the coating is finished, and the maintenance time of the prefabricated part is generally 8-10 h. The scouring time is more than 48h, the strength of the laitance layer is more than 5.0MPa, the bonding strength with the concrete layer is more than 0.2MPa, and the scouring is difficult.
Preferably, before flushing, the mold needs to be removed and the surface of the concrete needs to be checked, the surface strength of the concrete is preferably 8-10 MPa, the pressure of a water gun is suitable, the water gun is controlled within the range of 5-8 MPa and cannot be flushed vertically, the inclination angle is preferably 30-60 degrees, and the distance between a water gun flushing head and a concrete flushing surface is preferably 0.8-1.5 m.
Preferably, after the washing is finished, the quality control of the rough surface of the concrete is mainly performed by exposed stones, the average depth of the concave-convex is 4-6 mm, and the maximum depth can reach 10 mm.
Preferably, after the washing is finished, the components are naturally maintained to the age, and the components can be placed in a storage yard for natural maintenance.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a prefabricated heat preservation superimposed shear wall which characterized in that includes:
an inner prefabricated wall panel (1);
the outer prefabricated wall plate (3) is arranged at intervals with the inner prefabricated wall plate (1);
the first side surface of the heat insulation board (2) is attached to the outer prefabricated wall board (3), a hollow cavity (5) is formed between the second side surface of the heat insulation board and the inner prefabricated wall board (1), and the hollow cavity (5) is suitable for filling cast-in-place concrete;
the two ends of the heat-insulation connecting piece (4) are respectively fixedly connected with the inner prefabricated wall board (1) and the outer prefabricated wall board (3), and the heat-insulation connecting piece (4) is suitable for supporting the heat-insulation board (2) and enabling the heat-insulation board (2) and the inner prefabricated wall board (1) to form the hollow cavity (5);
interior prefabricated wallboard (1) orientation heated board (2) one side is formed with coarse aggregate region (12), coarse aggregate region (12) by a plurality of coarse aggregate (123) protrusion in interior prefabricated wallboard (1) concrete layer (124) upper surface forms.
2. The prefabricated insulated laminated shear wall of claim 1, wherein a plurality of said coarse aggregate (123) is exposed above the upper surface of said concrete layer (124) at an average height H1, and a plurality of said coarse aggregate (123) is embedded in said concrete layer (124) at an average depth H2, wherein 1/2 is H2/(H1+ H2) is 2/3.
3. Prefabricated insulated superimposed shear wall according to claim 1, characterized in that said insulating connector (4) comprises:
one end of the supporting rod (41) is arranged in the inner prefabricated wall plate (1), and the other end of the supporting rod penetrates through the heat insulation plate (2) and extends into the outer prefabricated wall plate (3);
the lower limiting piece (44) is fixedly connected with the supporting rod (41) and is suitable for supporting the second side surface of the heat insulation plate (2);
and the upper limiting piece (42) is fixedly connected with the supporting rod (41) and is suitable for limiting the first side surface of the heat-insulation plate (2).
4. A method for manufacturing a prefabricated heat-preservation superposed shear wall is characterized by comprising the following steps:
s1: pouring concrete of the inner prefabricated wallboard, and covering one end of the heat-insulating connecting piece (4);
s2: coating a surface retarder on the concrete surface of the inner prefabricated wallboard;
s3: the heat insulation plate (2) is arranged on the heat insulation connecting piece (4), and the heat insulation plate (2) and the upper surface of the inner prefabricated wallboard concrete are arranged at intervals;
s4: pouring outer prefabricated wallboard concrete on the heat insulation plate (2), and covering the other end of the heat insulation connecting piece (4);
s5: maintaining;
s6: the upper surface of the inner prefabricated wall panel is washed to form a coarse aggregate area (12).
5. The method for manufacturing a prefabricated thermal insulation laminated shear wall according to claim 4, wherein the step S3 further comprises:
before the heat preservation plate (2) is installed, the upper limiting piece (42) of the heat preservation connecting piece (4) is in a detachable state; after the heat insulation plate (2) is installed, the upper limit piece (42) is installed.
6. The method for manufacturing a prefabricated thermal insulation laminated shear wall according to claim 4, wherein the concrete for the inner prefabricated wall panel comprises: 320-360 parts of cement, 70-100 parts of fly ash, 700-800 parts of sand, 1000-1100 parts of stones, 5-8 parts of a water reducing agent and 170-180 parts of water, wherein the sand is medium sand, the water reducing agent is a polycarboxylic acid water reducing agent, the initial slump is 180 +/-20 mm, and the 30min slump is 160 +/-20 mm.
7. The method for manufacturing a prefabricated thermal insulation laminated shear wall according to claim 4, wherein the step S1 further comprises: pouring concrete of the inner prefabricated wallboard and then vibrating; the vibration time is 15-20 s, or 1/3-1/2 of the particle size of the stones is controlled to be immersed in the concrete to stop vibrating.
8. The method for manufacturing the prefabricated heat-preservation superposed shear wall according to claim 4, wherein the surface retarder comprises one or more of sodium gluconate, sucrose, sodium tripolyphosphate, sodium monofluorophosphate, white sugar, methyl cellulose, citric acid, sodium citrate, tartaric acid and borax.
9. The method for manufacturing a prefabricated thermal insulation laminated shear wall according to claim 8, wherein the surface retarder is applied by one of brushing, rolling and spraying, and the dosage of the surface retarder is 0.10kg/m2～0.30kg/m2(ii) a The coating time of the surface retarder is finished within 30-60 min after the vibration.
10. The method for manufacturing the prefabricated heat-preservation laminated shear wall according to claim 4, wherein in the step S6, the time for washing the upper surface of the prefabricated wall panel is 12-24 hours, the inclination angle between the washing water column and the upper surface of the prefabricated wall panel is 30-60 degrees, and the distance between the washing head and the upper surface of the prefabricated wall panel is 0.8-1.5 m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135048A (en) * | 2022-01-01 | 2022-03-04 | 易建网科技有限公司 | Sandwich heat-preservation superposed shear wall and connecting piece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452320A (en) * | 2013-09-05 | 2013-12-18 | 中铁上海工程局有限公司 | Concrete dabbing construction method |
| CN110670757A (en) * | 2019-10-11 | 2020-01-10 | 三一筑工科技有限公司 | Double-skin wall connecting component, connecting structure and construction method |
| CN111441509A (en) * | 2020-04-07 | 2020-07-24 | 三一筑工科技有限公司 | Production method of vertical joint bar structure with heat-insulation cavity shear wall |
| CN111673900A (en) * | 2020-07-06 | 2020-09-18 | 深圳市现代营造科技有限公司 | Production process and production structure of double-sided prefabricated heat-preservation superposed shear wall board |
| CN113152742A (en) * | 2021-04-29 | 2021-07-23 | 赵红玲 | Semi-prefabricated non-demolition waterproof superimposed shear wall structure |
-
2021
- 2021-08-19 CN CN202110954186.4A patent/CN113550460A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452320A (en) * | 2013-09-05 | 2013-12-18 | 中铁上海工程局有限公司 | Concrete dabbing construction method |
| CN110670757A (en) * | 2019-10-11 | 2020-01-10 | 三一筑工科技有限公司 | Double-skin wall connecting component, connecting structure and construction method |
| CN111441509A (en) * | 2020-04-07 | 2020-07-24 | 三一筑工科技有限公司 | Production method of vertical joint bar structure with heat-insulation cavity shear wall |
| CN111673900A (en) * | 2020-07-06 | 2020-09-18 | 深圳市现代营造科技有限公司 | Production process and production structure of double-sided prefabricated heat-preservation superposed shear wall board |
| CN113152742A (en) * | 2021-04-29 | 2021-07-23 | 赵红玲 | Semi-prefabricated non-demolition waterproof superimposed shear wall structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135048A (en) * | 2022-01-01 | 2022-03-04 | 易建网科技有限公司 | Sandwich heat-preservation superposed shear wall and connecting piece |
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