CN216766433U - Superposed hollow floor slab with formwork - Google Patents
Superposed hollow floor slab with formwork Download PDFInfo
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- CN216766433U CN216766433U CN202122596119.8U CN202122596119U CN216766433U CN 216766433 U CN216766433 U CN 216766433U CN 202122596119 U CN202122596119 U CN 202122596119U CN 216766433 U CN216766433 U CN 216766433U
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- formwork
- slab
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- prefabricated
- steel bars
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- 238000009415 formwork Methods 0.000 title claims abstract description 66
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 49
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 39
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- 238000010276 construction Methods 0.000 description 9
- 239000004567 concrete Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a composite hollow floor slab with a formwork, which comprises a prefabricated layer and a cast-in-place layer, and is characterized in that: the prefabricated floor is internally provided with a slab bottom reinforcing mesh, the cast-in-situ floor is internally provided with a slab face reinforcing mesh, a plurality of formworks are arranged on the surface of the prefabricated floor and between the slab face reinforcing meshes in the cast-in-situ floor at intervals along the longitudinal direction and the transverse direction of the floor, the slab bottom reinforcing mesh and the slab face reinforcing mesh are connected through reinforcing steel connectors, and the reinforcing steel connectors are arranged between two adjacent formworks. The formwork is arranged on the surface of the prefabricated layer and between the face reinforcing meshes, and the whole formwork is positioned in the cast-in-place layer, so that the formwork can be embedded in the cast-in-place layer in a cast-in-place mode, the thickness of the prefabricated floor slab is effectively reduced, the transportation and the hoisting are more convenient, the excessive space cannot be occupied due to the thickness of the floor slab in the transportation process, the formwork is not easily crushed, and the problem of inconvenient transportation and hoisting caused by the fact that the formwork is embedded in the prefabricated layer in the existing laminated hollow floor slab is solved.
Description
Technical Field
The utility model relates to the technical field of assembly type buildings, in particular to a composite hollow floor slab with a formwork.
Background
With the development of industrial technology in recent years, China actively explores and develops assembly type buildings. The ' guidance suggestion on the rapid development of the prefabricated buildings in the office of the State Council ' of 2016 ' issued in the state of China indicates that the prefabricated concrete structure is developed according to local conditions, and the time of about 10 years is strived for, so that the prefabricated buildings occupy 30% of the newly-built buildings. On the other hand, the standard system needs to be perfected, and the technical innovation needs to be strengthened.
With the development of the prefabricated building greatly promoted by the country, the composite floor slab becomes the most common prefabricated structural member applied to the current prefabricated building due to the advantages of standardized design, industrialized manufacturing, high installation mechanization degree, better structural integral rigidity, superior seismic performance, better economic benefit and the like, and comprises a prefabricated layer and a cast-in-place layer. The cast-in-situ hollow floor has the advantages of reducing the dead weight of the structure, increasing the rigidity of the floor slab, shortening the construction period, improving the sound insulation effect, reducing the construction cost of the structure and the like because of the built-in formwork product, and is particularly suitable for multi-story high-rise buildings with large column nets, large bay, large space, large span and large load. The composite hollow floor slab combines the composite floor slab and hollow floor slab technology, and has more obvious advantages.
The existing composite hollow floor slab is usually formed by pre-embedding a formwork in a prefabricated layer, wherein part of the formwork is pre-embedded in the prefabricated layer and part of the formwork is exposed out of the prefabricated layer, but the formwork is generally higher in thickness, and the problems of inconvenience in transportation and hoisting and the like are easily caused if the formwork is pre-embedded at the prefabricated part of the prefabricated layer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a superposed hollow floor slab with a formwork, the formwork does not need to be embedded in a prefabricated layer, the thickness of the floor slab can be reduced, and the transportation and the hoisting of the floor slab are convenient.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a take coincide hollow floor of mould shell, includes prefabricated layer and cast-in-place layer, prefabricated layer with cast-in-place layer coincide, cast-in-place layer is located the top on prefabricated layer, its characterized in that: the prefabricated layer is internally provided with a slab bottom reinforcing mesh, the cast-in-situ layer is internally provided with a slab face reinforcing mesh, and a plurality of formworks are uniformly arranged at intervals along the longitudinal direction and the transverse direction of the floor slab in the cast-in-situ layer on the surface of the prefabricated layer and between the slab face reinforcing meshes.
Further, the formwork is placed on the upper surface of the prefabricated layer, and the formwork and the prefabricated layer are fixedly connected through cement mortar bonding agents or fasteners.
Further, the slab bottom reinforcing mesh and the slab surface reinforcing mesh are connected through a reinforcing connector, the reinforcing connector is arranged between two adjacent formworks and comprises truss reinforcing steel bars and tie bars, the lower portions of the truss reinforcing steel bars are pre-buried in the prefabricated layers, the tops of the truss reinforcing steel bars are exposed out of the prefabricated layers, the bottoms of the truss reinforcing steel bars are connected with the slab bottom reinforcing mesh, the tops of the truss reinforcing steel bars are connected with one ends of the tie bars, and the other ends of the tie bars are connected with the slab surface reinforcing mesh.
Furthermore, the truss reinforcing steel bars comprise a pair of web member reinforcing steel bars and upper chord reinforcing steel bars connected with the upper ends of the web member reinforcing steel bars, the lower portions of the web member reinforcing steel bars are embedded in the prefabricated layer, the upper ends of the web member reinforcing steel bars and the upper chord reinforcing steel bars are exposed out of the prefabricated layer, the lower ends of the web member reinforcing steel bars are connected with the plate bottom reinforcing mesh, and the upper chord reinforcing steel bars are connected with one ends of the tie bars, which are close to the truss reinforcing steel bars.
Further, the tie bar is an S-shaped tie bar, and the S-shaped tie bar may or may not be arranged or arranged at intervals.
Preferably, the fastener is a bolt or a pin or a nail.
Preferably, the form of the formwork is of other forms such as a bowl, a square or a semicircle, the form of the bowl, the square or the semicircle is convenient for stacking and transporting during transportation, the occupied space of the formwork is reduced, thereby realizing one-time mass transportation and saving the cost.
Preferably, the surface of one side of the prefabricated layer facing the board reinforcing mesh avoids the position where the formwork is placed to be roughened.
Preferably, the plate surface reinforcing mesh is formed by field binding or welding reinforcing mesh sheets.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the formwork is arranged in the cast-in-place layer and positioned between the surface of the prefabricated layer and the plate surface reinforcing mesh, so that the formwork is not required to be embedded in the prefabricated layer, but is embedded in the cast-in-place layer in a cast-in-place mode, the thickness of the prefabricated layer is effectively reduced, the transportation and the hoisting of the floor slab are more convenient, too much space cannot be occupied due to the thickness of the floor slab in the transportation process, the formwork is not easily crushed, and the problem of inconvenient transportation and hoisting caused by the fact that the formwork is embedded in the prefabricated layer in the existing overlapped hollow floor slab is solved.
(2) The utility model adopts the technology of combining the superposed floor slab and the hollow floor slab, has simple manufacture, safety and reliability and low fault tolerance rate of construction and installation, and because the light formwork is arranged in the structure of the composite floor slab by adopting the principle of combining the composite floor slab and the hollow floor slab, the utility model not only saves the using amount of reinforcing steel bars and concrete, reduces the loss of the formwork, effectively reduces the production cost, has obvious economic value, does not have a large number of primary and secondary beams, is more convenient to construct, shortens the construction period and accelerates the construction progress; with the reduction of the self weight of the floor slab, the earthquake effect is reduced, the load borne by the beam, the column and the foundation is reduced, the manufacturing cost is reduced, the net height of the structure is increased, and the method is particularly suitable for multi-story high-rise buildings with large column nets, large bay, large space, large span and large load.
(3) According to the utility model, the formwork and the prefabricated layer are fixed through the cement mortar binder or the fastener, so that the formwork is not easy to shift and float when concrete is cast in situ, and the concrete on the cast-in-situ layer is not easy to flow into the cavity of the formwork.
(4) According to the utility model, the truss steel bars are arranged in the prefabricated layer, and the truss steel bars are connected with the plate face steel bar mesh by the S-shaped tie bars, so that the cast-in-place layer and the prefabricated layer are connected more stably, the shear resistance of the S-shaped tie bars can be improved, and the formwork is not easy to run.
(5) The composite floor slab with the formwork can be directly manufactured in the existing component factory according to the mode of producing composite slabs without adding new working procedures.
(6) The utility model can be applied to floors of a bottom layer, a middle layer and a top layer of a building structure, namely at least one layer of the bottom layer, the middle layer and the top layer is used, when one cross slab is used, the rest floor parts can use a cast-in-place structure system, so the utility model can be combined with the cast-in-place structure system and an assembly structure system for use.
(7) The utility model can select different plate thicknesses and different plate spans according to the actual requirements of actual engineering and the design requirements, so the utility model has wide application range and is suitable for wide popularization and use.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
fig. 3 is a schematic longitudinal cross-sectional view of a floor slab with reinforcing bar connectors between the bottom reinforcing mesh and the face reinforcing mesh according to an embodiment of the present invention;
fig. 4 is a longitudinal sectional view of the present invention.
In the figure: 1-prefabricated layer, 2-cast-in-place layer, 3-slab bottom reinforcing mesh, 4-truss reinforcing steel bar, 41-upper chord reinforcing steel bar, 42-web member reinforcing steel bar, 5-formwork, 6-slab surface reinforcing mesh, 7-S-shaped tie bar and 8-fastening piece.
Detailed Description
The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and examples so that those skilled in the art can better understand and implement the technical solutions of the present invention.
The utility model provides a composite hollow floor slab with a formwork, which comprises a prefabricated layer 1 and a cast-in-place layer 2, wherein the prefabricated layer 1 and the cast-in-place layer 2 are laminated, the cast-in-place layer 2 is positioned above the prefabricated layer 1, a slab bottom reinforcing mesh 3 is arranged in the prefabricated layer 1, a slab face reinforcing mesh 6 is arranged in the cast-in-place layer 2, and the slab face reinforcing mesh 6 is made by binding on site or adopting welded reinforcing mesh sheets. A plurality of formworks 5 are arranged on the upper surface of the prefabricated layer 1, the formworks 5 are uniformly spaced along the longitudinal direction and the transverse direction of the floor slab, and the formworks 5 are positioned in the cast-in-place layer 2 and are positioned below the steel bar mesh 6 of the slab surface; as shown in fig. 2, the bent parts at the left and right sides of the bottom of the formwork 5 can be fixedly connected with the prefabricated layer 1 by cement mortar binder or fastener 8 (such as bolt or pin or shooting nail) according to requirements, so that the formwork 5 is not easy to run and float in the process of casting concrete in situ;
in the embodiment, the form 5 is bowl-shaped, and the form 5 of the utility model does not need to be arranged in a prefabricated layer, so that the prefabricated floor slab and the form 5 can be separately transported in the transportation process, the bowl-shaped form 5 can be stacked and transported in the transportation process, the occupied space of the form 5 is reduced, the one-time mass transportation can be realized, and the cost is saved. Besides the bowl shape of this embodiment, the shape of the mold shell 5 can be other shapes such as a square shape or a semicircular shape.
The prefabricated layer 2 is roughened at the position avoiding the formwork 5 to place on the surface, the roughness is increased, the stability and firmness of the cast-in-place layer 2 and the prefabricated layer 1 are improved, and the slab bottom reinforcing mesh 3 and the slab surface reinforcing mesh 6 are connected through the reinforcing steel bar connecting piece between the two adjacent formworks 5, so that the cast-in-place layer 2 and the prefabricated layer 1 are stably connected, and the anti-seismic performance is improved.
In this embodiment, as shown in fig. 3, according to the actual construction requirement, the slab-bottom mesh reinforcement 3 and the slab-face mesh reinforcement 6 can be connected by a steel bar connector, the steel bar connector is disposed between two adjacent formworks, the steel bar connector includes a truss steel bar 4 and an S-shaped tie bar 7 embedded in the prefabricated layer 1, the truss steel bar 4 of this embodiment includes a pair of web members 42 and an upper chord steel bar 41 connected to the upper ends of the web members 42, the lower portions of the web members 42 are embedded in the prefabricated layer 1, the upper ends of the web members 42 and the upper chord steel bar 41 are exposed out of the prefabricated layer 1, the lower ends of the web members 42 are anchored to the slab-bottom mesh reinforcement 3, the upper chord steel bar 41 is connected to the lower ends of the S-shaped tie bars 7, and the upper ends of the S-shaped tie bars 7 are connected to the slab-face mesh reinforcement 6; the addition of the truss reinforcing steel bars 4 and the S-shaped tie bars 7 can increase the rigidity of the floor slab on one hand, and can increase the shearing of the superposed surface of the prefabricated layer 1 and the cast-in-place layer 2 on the other hand.
The construction process of the utility model is as follows: manufacturing a prefabricated layer 1, wherein the prefabricated layer 1 avoids the position where a formwork 5 is placed for roughening treatment, a plate bottom steel bar net 3 and truss steel bars 4 are pre-embedded in the prefabricated layer 1, the lower ends of web member steel bars 42 of the truss steel bars 4 are anchored and fixed with the plate bottom steel bar net 3, and the upper ends of the web member steel bars 42 and upper chord steel bars 41 are exposed out of the prefabricated layer 1; the prefabricated layer 1 is transported to a construction site, after the prefabricated layer 1 is hoisted, a certain number of formworks 5 are arranged above the prefabricated layer 1 at intervals according to design requirements, after the formworks 5 are placed, the board reinforcing mesh 6 is laid above the formworks 5, the board reinforcing mesh 6 can be bound on site or can be made of welded reinforcing mesh sheets, the formworks 5 are pressed down by the board reinforcing mesh 6, the truss reinforcing steel bars 4 and the board reinforcing mesh 6 are fixed by the S-shaped tie bars 7, the formworks 5 are not prone to dislocation, and finally concrete pouring is carried out, so that construction can be completed.
The above-mentioned embodiments are only preferred embodiments of the present invention, but should not be construed as limitations of the present invention, and any modifications and improvements based on the concept of the present invention shall fall within the protection scope of the present invention, and the specific protection scope shall be subject to the claims.
Claims (9)
1. The utility model provides a take coincide hollow floor of mould shell, includes prefabricated layer and cast-in-place layer, prefabricated layer with cast-in-place layer coincide, cast-in-place layer is located the top on prefabricated layer, its characterized in that: the prefabricated layer is internally provided with a slab bottom reinforcing mesh, the cast-in-situ layer is internally provided with a slab face reinforcing mesh, and a plurality of formworks are uniformly arranged at intervals along the longitudinal direction and the transverse direction of the floor slab in the cast-in-situ layer on the surface of the prefabricated layer and between the slab face reinforcing meshes.
2. A modular hollow floor slab with formwork in accordance with claim 1, wherein: the formwork is placed on the upper surface of the prefabricated layer, and the formwork and the prefabricated layer are fixedly connected through cement mortar bonding agents or fastening pieces.
3. A modular hollow floor slab with formwork according to claim 2, wherein: the slab bottom reinforcing mesh and the slab surface reinforcing mesh are connected through a reinforcing connector, the reinforcing connector is arranged between two adjacent formworks and comprises truss reinforcing steel bars and tie bars, the lower parts of the truss reinforcing steel bars are pre-buried in the prefabricated layers, the tops of the truss reinforcing steel bars are exposed out of the prefabricated layers, the bottoms of the truss reinforcing steel bars are connected with the slab bottom reinforcing mesh, the tops of the truss reinforcing steel bars are connected with one ends of the tie bars, and the other ends of the tie bars are connected with the slab surface reinforcing mesh.
4. A modular hollow floor slab with formwork according to claim 3, wherein: the truss reinforcing steel bar comprises a pair of web member reinforcing steel bars and upper chord reinforcing steel bars connected with the upper ends of the web member reinforcing steel bars, the lower portions of the web member reinforcing steel bars are embedded in the prefabricated layer, the upper ends of the web member reinforcing steel bars and the upper chord reinforcing steel bars are exposed out of the prefabricated layer, the lower ends of the web member reinforcing steel bars are connected with the plate bottom reinforcing mesh, and the upper chord reinforcing steel bars are connected with one ends, close to the truss reinforcing steel bars, of the tie bars.
5. The modular hollow floor slab with formwork of claim 4, wherein: the tie bar is an S-shaped tie bar.
6. A modular hollow floor slab with formwork according to claim 2, wherein: the fastener is a bolt or a pin or a shooting nail.
7. A modular hollow floor slab with formwork in accordance with claim 1, wherein: the shape of the mould shell is bowl-shaped or square or semicircular.
8. A modular hollow floor slab with formwork in accordance with claim 1, wherein: and roughening the surface of one side of the prefabricated layer facing the board reinforcing mesh at a position avoiding the position where the formwork is placed.
9. A modular hollow floor slab with formwork in accordance with claim 1, wherein: the plate face reinforcing mesh is formed by field binding or welded reinforcing mesh sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122596119.8U CN216766433U (en) | 2021-10-27 | 2021-10-27 | Superposed hollow floor slab with formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122596119.8U CN216766433U (en) | 2021-10-27 | 2021-10-27 | Superposed hollow floor slab with formwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216766433U true CN216766433U (en) | 2022-06-17 |
Family
ID=81960888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122596119.8U Active CN216766433U (en) | 2021-10-27 | 2021-10-27 | Superposed hollow floor slab with formwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216766433U (en) |
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2021
- 2021-10-27 CN CN202122596119.8U patent/CN216766433U/en active Active
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