CN114131749A - Production method of ALC composite floor truss bottom plate - Google Patents
Production method of ALC composite floor truss bottom plate Download PDFInfo
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- CN114131749A CN114131749A CN202111305942.7A CN202111305942A CN114131749A CN 114131749 A CN114131749 A CN 114131749A CN 202111305942 A CN202111305942 A CN 202111305942A CN 114131749 A CN114131749 A CN 114131749A
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- bottom plate
- truss
- composite floor
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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
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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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
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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
- 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
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a production method of an ALC composite floor truss bottom plate, which comprises the following steps: manufacturing a steel bar mesh and welding a steel truss; fixing the steel bar net sheets of the strip steel truss on the front and back sides of the foam board, and respectively matching a steel bar net sheet without the steel truss, thereby forming a skeleton unit; manufacturing a plurality of framework units; placing a plurality of framework units into a mould filled with autoclaved aerated concrete slurry by using a steel chisel; primarily hardening the autoclaved aerated concrete slurry to form an autoclaved aerated concrete layer; cutting between adjacent framework units, and dividing into a plurality of superposed floor truss bottom plate units; performing steam pressure maintenance; and separating the superposed floor truss bottom plate units, and taking down the foam board to obtain two ALC superposed floor truss bottom plates for each superposed floor truss bottom plate unit. The ALC composite floor truss bottom plate produced by the method has the advantages of light weight, no pollution, good heat insulation and sound insulation properties and strong integrity of the composite floor.
Description
Technical Field
The invention belongs to the technical field of building material processing, and particularly relates to a production method of an ALC composite floor truss bottom plate.
Background
The laminated floor slab is an assembled integral floor slab formed by laminating prefabricated slabs and cast-in-place reinforced concrete layers. The prefabricated slab is one of the components of the laminated floor slab structure and is a permanent template of the cast-in-place reinforced concrete laminated layer, and horizontal equipment pipelines can be laid in the cast-in-place laminated layer. Laminated floor's structure is like a steel bar truss laminated floor that chinese patent CN206859479U discloses, including prefabricated bottom plate, cast in situ concrete laminated layer and steel bar truss, be equipped with the eave tile bolt on the prefabricated bottom plate, steel bar truss includes the bottom reinforcing bar, upper portion reinforcing bar and web member reinforcing bar, the bottom reinforcing bar is arranged along length direction, the bottom reinforcing bar connects with eave tile bolt welded joint, the web member reinforcing bar interval sets up in prefabricated bottom plate top, the top welded connection of upper portion reinforcing bar and web member reinforcing bar, cast in situ concrete laminated layer sets up in prefabricated bottom plate top. The composite floor slab has good integrity and high rigidity, can save templates, has smooth upper and lower surfaces, is convenient for finishing a finish coat, and is suitable for high-rise buildings and large-bay buildings with higher requirement on the integral rigidity.
However, the present coincide floor prefabricated plate is still the cement slab mostly, leads to coincide floor weight big, not environmental protection, and the cement slab itself gives sound insulation, keeps warm and gives sound insulation effect poor, for improving above-mentioned problem, has two kinds of modes at present:
the first way is to fill expanded polystyrene boards in cast-in-place reinforced concrete superposed layers, and the expanded polystyrene boards are laid on the upper parts of the prefabricated thin plates to form a box-shaped section so as to reduce the weight of cast-in-place concrete and can be used as heat and sound insulation layers of the superposed floor slabs.
The second way is to use ALC floor as the bottom plate, for example, the composite floor of autoclaved lightweight aerated concrete slab disclosed in chinese patent CN206034711U, the composite floor includes a large autoclaved lightweight aerated concrete slab (NALC) and a cast-in-place slab, double-layer steel bars are arranged in the large autoclaved lightweight aerated concrete slab (NALC), a structural steel bar net is arranged in the cast-in-place slab, and the double-layer steel bars and the structural steel bar net are connected to form the composite floor. The laminated floor slab structure reduces the whole weight of the component, the ALC has good heat-insulating and fireproof performance, and the bottom plate can be directly puttered without secondary treatment. However, the composite floor slab structure is provided with ribs in the abutted seam grooves, so that the integrity of the composite floor slab is poor.
Disclosure of Invention
The invention provides a production method of an ALC composite floor truss bottom plate, which aims to solve the problems of large mass, poor heat preservation and sound insulation effects and environmental pollution of a cement plate bottom plate composite floor and solve the problem of poor integrity of an autoclaved lightweight aerated concrete plate composite floor.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the invention relates to a production method of an ALC composite floor truss bottom plate, which comprises the following steps:
1) manufacturing n pieces of reinforcing mesh sheets, wherein n is an even number, and welding steel trusses on the n/2 reinforcing mesh sheets;
2) fixing the steel bar net sheets of the strip steel truss on the front and back surfaces of the foam board, inserting the tip ends of the steel truss into the foam board, respectively matching one steel bar net sheet without the steel truss with the steel bar net sheets of the strip steel truss on the front and back surfaces of the foam board, and fixing four steel bar net sheets on steel rods to form a skeleton unit;
3) repeating the step 2), and manufacturing a plurality of framework units;
4) placing a plurality of framework units into a mould filled with autoclaved aerated concrete slurry by using a steel chisel, and taking out the steel chisel;
5) standing the autoclaved aerated concrete slurry to form an autoclaved aerated concrete layer, and then demoulding;
6) performing linear cutting between adjacent framework units, and dividing the framework units into a plurality of superposed floor truss bottom plate units;
7) conveying all the laminated floor truss bottom plate units to a still kettle for steam pressure maintenance;
8) and separating the laminated floor truss bottom plate units after maintenance, and taking down the foam board to obtain two ALC laminated floor truss bottom plates for each laminated floor truss bottom plate unit.
Preferably, when the reinforcing mesh with the steel truss is fixed on the front surface and the back surface of the foam board in the step 2), a gap exists between the reinforcing mesh and the surface of the foam board, and the size of the gap is the same as the thickness of the concrete protective layer of the bottom plate of the ALC composite floor truss.
Preferably, the steel trusses fixed on the steel mesh sheets on the front and back surfaces of the foam board in the step 2) are symmetrically arranged.
Preferably, before the reinforcing mesh with the steel truss is fixed on the front and back sides of the foam board in the step 2), a release agent is further coated on the surface of the foam board.
Preferably, the foam board used in step 2) is a polystyrene foam board.
Preferably, the edges of the front and back sides of the foam board along the length direction of the two sides are provided with first protrusions, so that a first groove is formed at the edge of the upper surface of the ALC laminated floor truss bottom board obtained in the step 8).
Preferably, the two sides of the die used in step 4) are respectively provided with a second protrusion and a second groove, the second protrusion and the second grooves are bilaterally symmetrical, so that a second groove and a slot are respectively formed on the side edges of the two sides of the ALC composite floor truss bottom plate obtained in step 8), and when the plurality of ALC composite floor truss bottom plates are assembled, the slot of one ALC composite floor truss bottom plate is inserted into the second groove of the adjacent ALC composite floor truss bottom plate.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention relates to a production method of an ALC composite floor truss bottom plate, which fixes a steel bar mesh sheet of a strip steel truss on the front and back surfaces of a foam board to form a skeleton unit, then sequentially fixes a plurality of skeleton units on a steel chisel, utilizes the steel chisel to put the skeleton units into a mould filled with autoclaved aerated concrete slurry, cuts and autoclaved cures the concrete after primary hardening, then removes the foam board to obtain the ALC composite floor truss bottom plate, and the composite floor formed by construction of the ALC composite floor truss bottom plate has light weight and environmental protection, does not need secondary construction (laying of expanded polystyrene boards), and has strong heat preservation and sound insulation; compared with the existing autoclaved lightweight aerated concrete slab composite floor slab, the bottom end of the steel truss is embedded in the autoclaved aerated concrete layer of the bottom plate of the ALC composite floor slab truss and is connected with the internal reinforcing mesh, so that the overall performance of the composite floor slab is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of a skeletal unit;
fig. 2 is a schematic view of a plurality of laminated floor truss bottom plate units formed by cutting in the step 6);
FIG. 3 is a block diagram of the final ALC composite floor truss bedplate;
FIG. 4 is a cross-sectional view of a foam board used in example 2;
fig. 5 is a structural view of the ALC composite floor truss floor obtained in example 2.
Illustration of the drawings: 1-laminated floor truss bottom plate unit, 10-skeleton unit, 11-steel mesh sheet, 12-steel truss, 13-foam plate, 131-first protrusion, 14-autoclaved aerated concrete layer, 2-cutting line, 3-ALC laminated floor truss bottom plate, 31-first groove, 32-second groove, 33-slot and 4-concrete laminated layer.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Example one
The production method of the ALC composite floor truss bottom plate comprises the following steps:
1) manufacturing n steel bar net pieces 11, wherein n is an even number, and welding steel trusses 12 on the n/2 steel bar net pieces 11;
2) coating a release agent on the surface of a foam board 13, fixing the steel mesh sheets 11 of the strip steel truss 12 on the front and back surfaces of the foam board 13, when fixing, enabling the tips of the steel truss to face the foam board 13, pressing the steel mesh sheets 11 of the strip steel truss 12 to the foam board 13 by using an external force, enabling the surface of the foam board 13 to be cut, further enabling the tips of the steel truss 12 to be inserted into the foam board 13, enabling the surfaces of the steel mesh sheets 11 and the foam board 13 to have gaps, wherein the size of the gaps is the same as the thickness of a concrete protective layer of an ALC composite floor truss bottom board, preferentially selecting a polystyrene foam board for the foam board 13, symmetrically arranging the steel trusses 12 fixed on the steel mesh sheets 11 on the front and back surfaces of the foam board 13, respectively allocating one steel mesh sheet 11 without steel trusses for the steel mesh sheets 11 of the strip steel truss 12 on the front and back surfaces of the foam board 13, and fixing four steel mesh sheets on a steel chisel, further forming a skeleton unit 10, as shown in fig. 1, it should be noted that, in this step, the distance between the steel mesh sheets 11 and the thickness of the foam boards 13 are determined according to the thickness of the ALC laminated floor truss bottom board to be prepared;
3) repeating the step 2), and manufacturing a plurality of framework units 10;
4) placing a plurality of framework units 10 into a mould filled with autoclaved aerated concrete slurry by using a steel chisel, and taking out the steel chisel, wherein second bulges and grooves are respectively arranged on two sides of the used mould and are bilaterally symmetrical;
5) standing the autoclaved aerated concrete slurry to form an autoclaved aerated concrete layer 14, and then demoulding;
6) as shown in fig. 2, a line cutting is performed between the adjacent framework units along a cutting line 2, and the framework units are divided into a plurality of laminated floor truss bottom plate units 1;
7) conveying all the laminated floor truss bottom plate units 1 to a still kettle for steam pressure maintenance;
8) after maintenance, the laminated floor truss bottom plate units 1 are separated, for each laminated floor truss bottom plate unit 1, the foam boards 13 are taken down, and two ALC laminated floor truss bottom plates 3 shown in fig. 3 can be obtained, and as the two sides of the die are respectively provided with the second bulges and the second grooves which are bilaterally symmetrical, the second grooves 32 and the slots 33 are respectively formed on the lateral edges of the two sides of the obtained ALC laminated floor truss bottom plate 3.
When assembling many ALC coincide floor truss bottom plate on-spot, the slot 33 of one of them ALC coincide floor truss bottom plate 3 inserts in the second recess 32 of adjacent ALC coincide floor truss bottom plate 3, improves adjacent ALC coincide floor truss bottom plate 3's wholeness.
Example 2
The production method of the ALC composite floor truss bottom plate comprises the following steps:
1) manufacturing n steel bar net pieces 11, wherein n is an even number, and welding steel trusses 12 on the n/2 steel bar net pieces 11;
2) coating a release agent on the surface of a foam board 13, fixing the steel mesh sheet 11 of the strip steel truss 12 on the front and back surfaces of the foam board 13, when fixing, enabling the tip end of the steel truss to face the foam board 13, pressing the steel mesh sheet 11 of the strip steel truss 12 to the foam board 13 by using an external force, enabling the surface of the foam board 13 to be cut, further enabling the tip end of the steel truss 12 to be inserted into the foam board 13, enabling a gap to exist between the steel mesh sheet 11 and the surface of the foam board 13, wherein the size of the gap is the same as the thickness of a concrete protection layer of an ALC composite floor truss bottom board, the foam board 13 preferably adopts a polystyrene foam board, and the edges of the front and back surfaces of the foam board 13 along the length directions of the two sides are provided with first bulges, as shown in FIG. 4, the steel trusses 12 fixed on the steel mesh sheet 11 on the front and back surfaces of the foam board 13 are symmetrically arranged, for the steel mesh sheet 11 of the strip steel truss 12 on the front and back surfaces of the foam board 13, respectively matching a reinforcing mesh sheet 11 without a steel truss, and fixing four reinforcing mesh sheets on a steel chisel to form a framework unit 10, wherein the distance between the reinforcing mesh sheets 11 and the thickness of the foam plate 13 in the step are determined according to the thickness of the bottom plate of the ALC laminated floor truss to be prepared;
3) repeating the step 2), and manufacturing a plurality of framework units 10;
4) placing a plurality of framework units 10 into a mould filled with autoclaved aerated concrete slurry by using a steel chisel, and taking out the steel chisel, wherein second bulges and grooves are respectively arranged on two sides of the used mould and are bilaterally symmetrical;
5) primarily hardening the autoclaved aerated concrete slurry to form an autoclaved aerated concrete layer 14, and then demoulding;
6) as shown in fig. 2, a line cutting is performed between the adjacent framework units along a cutting line 2, and the framework units are divided into a plurality of laminated floor truss bottom plate units 1;
7) conveying all the laminated floor truss bottom plate units 1 to a still kettle for steam pressure maintenance;
8) and (3) separating the laminated floor truss bottom plate units 1 after maintenance, and taking down the foam boards 13 to obtain two ALC laminated floor truss bottom plates 3 for each laminated floor truss bottom plate unit 1.
Because the two sides of the die are respectively provided with the second bulge and the second groove which are symmetrical left and right, the side edges of the two sides of the obtained ALC composite floor truss bottom plate 3 are respectively provided with the second groove 32 and the slot 33; because the edges of the front and back sides of the foam board 13 along the length direction of the two sides are provided with first protrusions, a first groove 31 is formed at the edge of the upper surface of the ALC composite floor truss bottom plate 3.
When the composite floor slab is constructed on site, the ALC composite floor slab truss bottom plates 3 are hoisted and assembled, and when the ALC composite floor slab truss bottom plates are assembled, the slot 33 of one ALC composite floor slab truss bottom plate 3 is inserted into the second groove 32 of the adjacent ALC composite floor slab truss bottom plate 3, the integrity of the adjacent ALC composite floor slab truss bottom plates 3 is improved, the upper surface of the intersection of the adjacent ALC composite floor slab truss bottom plates 3 forms a u-shaped groove, after the assembly of the ALC composite floor slab truss bottom plates 3 is completed, the concrete composite layer 4 is poured, part of concrete enters the u-shaped groove, and the structural integrity of the upper layer and the lower layer is stronger.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The production method of the ALC composite floor truss bottom plate is characterized by comprising the following steps of: which comprises the following steps:
1) manufacturing n pieces of reinforcing mesh sheets, wherein n is an even number, and welding steel trusses on the n/2 reinforcing mesh sheets;
2) fixing the steel bar net sheets of the strip steel truss on the front and back surfaces of the foam board, inserting the tip ends of the steel truss into the foam board, respectively matching one steel bar net sheet without the steel truss with the steel bar net sheets of the strip steel truss on the front and back surfaces of the foam board, and fixing four steel bar net sheets on steel rods to form a skeleton unit;
3) repeating the step 2), and manufacturing a plurality of framework units;
4) placing a plurality of framework units into a mould filled with autoclaved aerated concrete slurry by using a steel chisel, and taking out the steel chisel;
5) standing the autoclaved aerated concrete slurry to form an autoclaved aerated concrete layer, and then demoulding;
6) performing linear cutting between adjacent framework units, and dividing the framework units into a plurality of superposed floor truss bottom plate units;
7) conveying all the laminated floor truss bottom plate units to a still kettle for steam pressure maintenance;
8) and separating the laminated floor truss bottom plate units after maintenance, and taking down the foam board to obtain two ALC laminated floor truss bottom plates for each laminated floor truss bottom plate unit.
2. The method for producing the ALC composite floor truss floor of claim 1, wherein: and 2) fixing the steel bar net piece with the steel truss on the front surface and the back surface of the foam board in the step 2), wherein a gap exists between the steel bar net piece and the surface of the foam board, and the size of the gap is the same as the thickness of the concrete protective layer of the truss bottom plate of the ALC composite floor board.
3. The method for producing the ALC composite floor truss floor of claim 1, wherein: the steel trusses fixed on the steel mesh sheets on the front and back surfaces of the foam board in the step 2) are symmetrically arranged.
4. The method for producing the ALC composite floor truss floor of claim 1, wherein: and 2) fixing the steel bar mesh with the steel truss on the front and back surfaces of the foam board, and coating a release agent on the surface of the foam board.
5. The method for producing the ALC composite floor truss floor of claim 1, wherein: the foam board used in the step 2) is a polystyrene foam board.
6. The method for producing the ALC composite floor truss floor of claim 1, wherein: the edges of the front side and the back side of the foam plate along the length direction of the two sides are provided with first bulges, so that a first groove is formed at the edge of the upper surface of the ALC composite floor truss bottom plate obtained in the step 8).
7. The method for producing the ALC composite floor truss floor of claim 1, wherein: the two sides of the die used in the step 4) are respectively provided with a second protrusion and a second groove, the second protrusion and the second grooves are bilaterally symmetrical, so that the side edges of the two sides of the ALC composite floor truss bottom plate obtained in the step 8) are respectively provided with a second groove and a slot, and when the plurality of ALC composite floor truss bottom plates are assembled, the slot of one ALC composite floor truss bottom plate is inserted into the second groove of the adjacent ALC composite floor truss bottom plate.
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| CN202111305942.7A CN114131749B (en) | 2021-11-05 | 2021-11-05 | Production method of ALC composite floor truss bottom plate |
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| CN202111305942.7A CN114131749B (en) | 2021-11-05 | 2021-11-05 | Production method of ALC composite floor truss bottom plate |
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| CN114734532A (en) * | 2022-05-09 | 2022-07-12 | 浙江杭加泽通建筑节能新材料有限公司 | Production method of autoclaved aerated concrete composite floor truss bottom plate based on aluminum die |
| CN114872168A (en) * | 2022-04-29 | 2022-08-09 | 江苏宝鹏建筑工业化材料有限公司 | Device and method for manufacturing reinforced autoclaved aerated concrete slab light composite floor slab |
| CN115946215A (en) * | 2022-12-09 | 2023-04-11 | 浙江杭加泽通建筑节能新材料有限公司 | Blank for forming bottom plate of aerated concrete composite floor slab and forming method |
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| CN115946215A (en) * | 2022-12-09 | 2023-04-11 | 浙江杭加泽通建筑节能新材料有限公司 | Blank for forming bottom plate of aerated concrete composite floor slab and forming method |
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| CN114131749B (en) | 2023-03-17 |
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