CN116330435A - Preparation method of prefabricated bottom plate and prefabricated laminated slab - Google Patents
Preparation method of prefabricated bottom plate and prefabricated laminated slab Download PDFInfo
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- CN116330435A CN116330435A CN202310011042.4A CN202310011042A CN116330435A CN 116330435 A CN116330435 A CN 116330435A CN 202310011042 A CN202310011042 A CN 202310011042A CN 116330435 A CN116330435 A CN 116330435A
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- bottom plate
- prefabricated
- steel bars
- concrete mortar
- wire mesh
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- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 50
- 239000011178 precast concrete Substances 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000004567 concrete Substances 0.000 claims description 33
- 239000000758 substrate Substances 0.000 claims description 21
- 239000012774 insulation material Substances 0.000 claims description 20
- 238000011065 in-situ storage Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
-
- 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
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- 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
-
- 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
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
- B28B7/0082—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with surfaces for moulding parallel grooves or ribs
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
A preparation method of a prefabricated bottom plate and a prefabricated composite floor slab relates to the field of buildings. The preparation method of the prefabricated bottom plate comprises the following steps: step 1, preparing a prefabricated bottom plate mould; step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars; step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar; and 4, demolding after the precast concrete mortar is dried, and obtaining a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot.
Description
Technical Field
The invention relates to the field of buildings, in particular to a laminated slab.
Background
In order to improve the heat insulation performance of the building and reduce the energy consumption of the building, a heat insulation layer is often additionally arranged in the wallboard. The situation of adding the heat insulation layer on the floor is not seen at present, but the heat insulation layer on the floor is also feasible and necessary in practice.
Disclosure of Invention
The invention aims to provide a preparation method of a prefabricated bottom plate, so as to provide a physical foundation for adding an insulation layer to a floor.
The invention aims to provide a preparation method of a prefabricated laminated slab, so as to prepare a floor slab with an insulation layer.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
the preparation method of the prefabricated bottom plate is characterized by comprising the following steps of:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
and 4, demolding after the precast concrete mortar is dried, and obtaining a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot.
A preparation method of the prefabricated composite floor slab comprises the steps of preparing a prefabricated bottom plate and preparing a concrete cast-in-situ layer; it is characterized in that the method comprises the steps of,
the preparation method of the prefabricated bottom plate comprises the following steps:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
step 4, demoulding after the precast concrete mortar is dried to obtain a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot;
the preparation method of the concrete cast-in-situ layer comprises the following steps:
connecting first stressed steel bars of the prefabricated bottom plate to a steel bar structure of a building, fixing the prefabricated bottom plate, and enabling the convex surface of the prefabricated bottom plate to face upwards;
paving heat insulation materials and second stress steel bars on the prefabricated bottom plate, and welding truss steel bars to the second stress steel bars;
thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars;
and step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried.
Another preparation method of the prefabricated composite floor slab comprises the steps of preparing a prefabricated bottom plate and preparing a concrete cast-in-situ layer; it is characterized in that the method comprises the steps of,
the preparation method of the prefabricated bottom plate comprises the following steps:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
step 4, demoulding after the precast concrete mortar is dried to obtain a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot;
the preparation method of the concrete cast-in-situ layer comprises the following steps:
connecting a second stress steel bar to a steel bar structure of a building, and welding the end part of a truss steel bar of the prefabricated bottom plate and the end part of the first stress steel bar to the second stress steel bar, so that the prefabricated bottom plate is suspended below the second stress steel bar, and the convex side of the prefabricated bottom plate faces upwards;
step two, paving a heat insulation material on the prefabricated bottom plate;
thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars;
and step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried.
The beneficial effects are that: 1. the prefabricated composite floor slab provided by the invention is internally provided with the heat insulation material, so that the heat insulation performance of a building can be effectively improved, and the energy consumption of the building can be reduced. 2. The prefabricated bottom plate is manufactured in a back-off mode, so that on one hand, the problem of inconsistent protrusions of the prefabricated bottom plate caused by collapse of the prefabricated concrete mortar can be avoided, on the other hand, the fixing difficulty of truss steel bars can be reduced, and the position of the first stressed steel bars can be adjusted by utilizing the truss steel bars. 3. The invention optimizes the structure of the prefabricated bottom plate mould, improves the preparation method of the prefabricated bottom plate, and allows the positions of the steel wire mesh plate and the first stressed steel bar to be adjusted through truss steel bars.
Detailed Description
The invention is further described below in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
The preparation method of the prefabricated composite floor slab comprises the steps of preparing a prefabricated bottom plate and preparing a concrete cast-in-situ layer.
Method for producing prefabricated base plate
The method comprises the following steps:
step 1, preparing a prefabricated bottom plate die, wherein the prefabricated bottom plate die comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and holes with upward openings are formed in the substrate. The openings may open between two adjacent slots. The position is thicker, so that the holes are allowed to be deeper, and then the truss steel bars are allowed to leak more outwards, and the connection of the truss steel bars and the second stressed steel bars is facilitated. More importantly, the prepared prefabricated bottom plate is sunken at the position, so that thicker heat insulation materials or cast-in-place concrete mortar can be filled at the position, and truss steel bars at the position can enable the connection of layers at the position to be more compact. The grooves can be strip-shaped grooves, and the strip-shaped grooves of the strip-shaped grooves are preferably distributed at equal intervals. The slots can be divided into two groups, the extending directions of the two groups of slots are different, the slots in the same group are distributed at equal intervals, and the slots in different groups are vertically distributed. The grooves can be distributed in a triangular shape, a quadrilateral shape, a pentagonal shape and the like.
Step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; truss steel bars are inserted into the holes, and the tops of the truss steel bars are welded and connected with first stress steel bars. The wire mesh plate can be a planar wire mesh or a corrugated wire mesh which is wavy. In the case of corrugated wire mesh, the profile of the corrugated wire mesh is preferably identical to the profile of the floor die, i.e. the corrugated wire mesh is provided with protrusions at positions corresponding to the slots, and the protrusions are inserted into the slots after the wire mesh plate is placed. The corrugated steel wire mesh not only has better support to the bulges of the preformed bottom plate after molding, but also can reduce the damage of the bulges in the allowing process. And the connection strength and the thermal expansion and contraction resistance of the finally obtained prefabricated composite floor slab can be increased. The wire mesh plate can be connected to the truss steel bar by strapping steel bars or welding, so that the position of the wire mesh plate can be adjusted by the truss steel bar. When the wire mesh plate is corrugated wire mesh, the corrugated wire mesh is preferably abutted against the bottom plate mold. At this time, the distance between the corrugated steel wire mesh and the first stressed steel bar is the largest, thereby allowing the thickness of the prefabricated bottom plate to be reduced. The side edge of the bottom plate mould is provided with a through hole, and the end part of the first stressed steel bar extends out of the through hole. Under the condition, the upper first stressed steel bars of the obtained prefabricated bottom plate extend out of the prefabricated bottom plate and are in a side surface bar-out type. The bottom plate mould is also provided with jacks with upward openings, the jacks are arranged along the side edges of the bottom plate mould, and after two ends of the first stressed steel bar are bent, the jacks are inserted. Under the condition, the first stressed steel bars on the obtained prefabricated bottom plate extend out from the surface of the prefabricated bottom plate, which is provided with the protrusions, and the side surfaces are not provided with the ribs. A heat insulation material accommodating groove is formed between two adjacent bulges of the prefabricated bottom plate, and preferably, the end part of the first stressed steel bar extends out of the heat insulation material accommodating groove positioned at the outermost side. The truss reinforcing steel bar is in a rod shape, and the truss reinforcing steel bar is provided with the annular fins, so that the fins are utilized to block the holes, the precast concrete mortar is prevented from entering the holes, and the demolding difficulty is increased.
And 3, pouring precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar. Thereby avoiding leakage of the first stressed steel bar. The upper surface of the precast concrete mortar is preferably a flat surface, so that the lower end surface of the final precast composite floor slab is flat while the transportation is convenient. The precast concrete mortar is preferably prepared by mixing the following raw materials in percentage by mass: and (3) cement: medium coarse sand: stone: water: silica fume powder: siliceous compactors: water reducer = 1:1.5:2:0.34:0.03:0.04:0.15. The prefabricated concrete mortar with the raw material components is prepared and used for the preparation method of the inverted prefabricated bottom plate, and the prefabricated concrete mortar with the raw material components is not only not easy to collapse, but also is not easy to crack during demolding. The first stress steel bars comprise first transverse stress steel bars and first longitudinal stress steel bars, the first transverse stress steel bars and the first longitudinal stress steel bars are staggered, and the staggered parts are welded, so that the structural strength of the first stress steel bars is increased. Further preferably, the welding point of the truss reinforcement and the first stress reinforcement coincides with the welding point of the first transverse stress reinforcement and the first longitudinal stress reinforcement. Thereby reducing the number of welds.
And 4, demolding after the precast concrete mortar is dried, so as to obtain a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot. Preferably, after the precast concrete mortar is completely dried, demolding is carried out. In demolding, preferably, the bottom plate mold with the prefabricated bottom plate is reversely buckled and then demolding is carried out. And after the back-off, demolding can effectively avoid deformation of truss steel bars in the demolding process, and in addition, the heavier lower part of the prefabricated bottom plate can be well supported by the ground after the back-off.
The prefabricated bottom plate is prefabricated and formed in a prefabrication factory, and is required to be transported to a construction site when in use. When in transportation, preferably, each prefabricated bottom plate is stacked, and two adjacent prefabricated bottom plates are arranged, the protruding face of the prefabricated bottom plate with the lower part faces upwards, the protruding face of the prefabricated bottom plate with the upper part faces downwards, the protruding faces of the two adjacent prefabricated bottom plates are abutted, and truss steel bars are arranged between the two adjacent protruding faces. Thereby utilize the recess holding truss reinforcing bar that forms between the arch, avoid truss reinforcing bar to leak outward, damage, deformation easily in the transportation.
The preparation method of the concrete cast-in-situ layer for the side rib-type prefabricated bottom plate comprises the following steps:
step one, fixing a prefabricated bottom plate at a specified position, wherein after the prefabricated bottom plate is fixed, the convex side of the prefabricated bottom plate faces upwards. The first stressed steel bars of the prefabricated bottom plate are connected to the steel bar structures in the walls, beams and columns of the building, so that the prefabricated bottom plate is fixed. And step two, paving heat insulation materials and second stress steel bars on the prefabricated bottom plate, and welding truss steel bars to connect the truss steel bars with the second stress steel bars. The two ends of the second stressed steel bar are preferably connected to the steel bar structures in the walls, beams and columns of the building. The insulating material is preferably a strip-shaped or plate-shaped insulating board. Where truss steel bars are provided, the truss steel bars penetrate the insulation material. And thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars. And step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried.
The preparation method of the concrete cast-in-situ layer for the prefabricated bottom plate with no rib on the side surface comprises the following steps:
and step one, fixing second stress steel bars, and welding the ends of truss steel bars of the prefabricated bottom plate and the ends of the first stress steel bars to the second stress steel bars, so that the prefabricated bottom plate is fixed below the second stress steel bars. And step two, paving a heat insulation material on the prefabricated bottom plate. The thermal insulation material is preferably in the form of granular thermal insulation particles, and the thermal insulation particles are preferably filled between two adjacent bulges of the prefabricated bottom plate. And thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars. And step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried. The prefabricated bottom plate with the side surface not provided with ribs can avoid touching other parts of the building in the lifting and assembling processes.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The preparation method of the prefabricated bottom plate is characterized by comprising the following steps of:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
and 4, demolding after the precast concrete mortar is dried, and obtaining a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot.
2. The method of claim 1, wherein the openings are open between the adjacent two slots.
3. The method for manufacturing a prefabricated floor according to claim 1, wherein the wire mesh plate is a planar wire mesh or a corrugated wire mesh in a wave shape.
4. A method of manufacturing a prefabricated base plate according to claim 3, characterized in that the corrugated wire mesh has the same contour as the base plate mould, i.e. the corrugated wire mesh is provided with protrusions at positions corresponding to the slots, the protrusions being inserted into the slots after placement of the wire mesh plate.
5. The method of manufacturing a prefabricated base plate according to claim 1, wherein a through hole is formed in a side of the base plate mold, and an end portion of the first stress steel bar protrudes from the through hole.
6. The method for manufacturing the prefabricated base plate according to claim 1, wherein the base plate mold is provided with jacks with upward openings, the jacks are arranged along the side edges of the base plate mold, and the jacks are inserted into the jacks after two ends of the first stressed steel bar are bent.
7. A preparation method of the prefabricated composite floor slab comprises the steps of preparing a prefabricated bottom plate and preparing a concrete cast-in-situ layer; it is characterized in that the method comprises the steps of,
the preparation method of the prefabricated bottom plate comprises the following steps:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
step 4, demoulding after the precast concrete mortar is dried to obtain a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot;
the preparation method of the concrete cast-in-situ layer comprises the following steps:
connecting first stressed steel bars of the prefabricated bottom plate to a steel bar structure of a building, fixing the prefabricated bottom plate, and enabling the convex surface of the prefabricated bottom plate to face upwards;
paving heat insulation materials and second stress steel bars on the prefabricated bottom plate, and welding truss steel bars to the second stress steel bars;
thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars;
and step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried.
8. A method of manufacturing a prefabricated composite floor slab according to claim 7, wherein the insulation material is a strip-like, plate-like insulation board, and where truss reinforcement is provided, the truss reinforcement penetrates the insulation material.
9. Another preparation method of the prefabricated composite floor slab comprises the steps of preparing a prefabricated bottom plate and preparing a concrete cast-in-situ layer; it is characterized in that the method comprises the steps of,
the preparation method of the prefabricated bottom plate comprises the following steps:
step 1, preparing a prefabricated bottom plate mold, wherein the prefabricated bottom plate mold comprises a plate-shaped substrate, grooves with upward openings are formed in the substrate, the groove wall spacing of the grooves is gradually increased from bottom to top, and openings with upward openings are formed in the substrate;
step 2, placing a steel wire mesh plate on the bottom plate die, and arranging first stress steel bars above the steel wire mesh plate; inserting truss steel bars into the holes, and welding the tops of the truss steel bars to the first stress steel bars;
step 3, casting precast concrete mortar on the bottom plate die until the first stressed steel bars are buried by the precast concrete mortar;
step 4, demoulding after the precast concrete mortar is dried to obtain a precast bottom plate, wherein a bulge matched with the slot is formed on the precast bottom plate at a position corresponding to the slot;
the preparation method of the concrete cast-in-situ layer comprises the following steps:
connecting a second stress steel bar to a steel bar structure of a building, and welding the end part of a truss steel bar of the prefabricated bottom plate and the end part of the first stress steel bar to the second stress steel bar, so that the prefabricated bottom plate is suspended below the second stress steel bar, and the convex side of the prefabricated bottom plate faces upwards;
step two, paving a heat insulation material on the prefabricated bottom plate;
thirdly, casting concrete mortar on site above the prefabricated bottom plate until the cast-in-situ concrete mortar is buried with heat insulation materials and second stress steel bars;
and step four, obtaining the prefabricated composite floor slab with the heat insulation layer after the cast-in-place concrete mortar is dried.
10. A further method of manufacturing a prefabricated composite floor slab according to claim 1, wherein the insulating material is in the form of granules of insulating particles which are filled between two adjacent projections of the prefabricated floor slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011042.4A CN116330435A (en) | 2023-01-05 | 2023-01-05 | Preparation method of prefabricated bottom plate and prefabricated laminated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011042.4A CN116330435A (en) | 2023-01-05 | 2023-01-05 | Preparation method of prefabricated bottom plate and prefabricated laminated slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116330435A true CN116330435A (en) | 2023-06-27 |
Family
ID=86878044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310011042.4A Pending CN116330435A (en) | 2023-01-05 | 2023-01-05 | Preparation method of prefabricated bottom plate and prefabricated laminated slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116330435A (en) |
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2023
- 2023-01-05 CN CN202310011042.4A patent/CN116330435A/en active Pending
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