CN114277991A - A superimposed hollow floor slab with formwork - Google Patents
A superimposed hollow floor slab with formwork Download PDFInfo
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- CN114277991A CN114277991A CN202111258222.XA CN202111258222A CN114277991A CN 114277991 A CN114277991 A CN 114277991A CN 202111258222 A CN202111258222 A CN 202111258222A CN 114277991 A CN114277991 A CN 114277991A
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Abstract
本发明公开了一种带模壳的叠合空心楼板，包括预制层和现浇层，其特征在于：在预制层内设有板底钢筋网，在现浇层内设有板面钢筋网，在现浇层内位于预制层的表面及板面钢筋网之间沿着楼板的纵向以及横向间隔排布有若干模壳，板底钢筋网和板面钢筋网之间通过钢筋连接件相连，钢筋连接件设置于相邻的两个模壳之间。本发明的模壳放置在预制层的表面及板面钢筋网之间，且整个模壳位于现浇层中，因此能够通过现场浇筑的方式埋在现浇层内，有效减小预制楼板的厚重，使得运输及吊装更方便，在运输过程中不会因为楼板厚重占用过多空间，模壳也不易被压坏，解决了现有叠合空心楼板在预制层中预埋模壳所造成的运输及吊装不便的问题。
The invention discloses a superimposed hollow floor slab with a formwork, comprising a prefabricated layer and a cast-in-place layer. In the cast-in-place layer, between the surface of the prefabricated layer and the steel mesh on the slab, a number of formwork are arranged along the longitudinal and lateral intervals of the floor. The connecting piece is arranged between two adjacent mould shells. The formwork of the present invention is placed between the surface of the prefabricated layer and the steel mesh on the slab surface, and the entire formwork is located in the cast-in-place layer, so it can be buried in the cast-in-place layer by way of on-site pouring, effectively reducing the thickness of the prefabricated floor slab. , which makes transportation and hoisting more convenient. During transportation, it will not take up too much space due to the thickness of the floor, and the formwork will not be easily crushed, which solves the transportation problem caused by the pre-embedded formwork of the existing laminated hollow floor slab in the prefabricated layer. and the inconvenience of hoisting.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a superposed hollow floor slab with a formwork.
Background
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.
Disclosure of Invention
The invention 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 invention 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 face reinforcing mesh is formed by field binding or welded reinforcing mesh sheets.
Compared with the prior art, the invention 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 invention 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 invention 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 invention, 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 invention, 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 invention 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 invention can be combined with the cast-in-place structure system and an assembly structure system for use.
(7) The invention can select different plate thicknesses and different plate spans according to the actual requirements of actual engineering and the design requirements, so the invention 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 invention 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 left and right bent parts 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 invention 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 the present embodiment, the form 5 can be a square form or a semicircular form.
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 the 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 invention 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 merely preferred embodiments of the present invention, but should not be construed as limiting the invention, and any variations and modifications based on the concept of the present invention should fall within the scope of the present invention, which is defined by the claims.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111258222.XA CN114277991A (en) | 2021-10-27 | 2021-10-27 | A superimposed hollow floor slab with formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111258222.XA CN114277991A (en) | 2021-10-27 | 2021-10-27 | A superimposed hollow floor slab with formwork |
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| Publication Number | Publication Date |
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| CN114277991A true CN114277991A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111258222.XA Pending CN114277991A (en) | 2021-10-27 | 2021-10-27 | A superimposed hollow floor slab with formwork |
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Citations (9)
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|---|---|---|---|---|
| JP2004190396A (en) * | 2002-12-12 | 2004-07-08 | Tokyo Eruguudo Kk | Half precast floor slab and construction method of floor using the same |
| CN1847553A (en) * | 2005-04-16 | 2006-10-18 | 邱则有 | In-situ cast hollow concrete slab |
| CN101230671A (en) * | 2007-01-28 | 2008-07-30 | 邱则有 | Force-bearing type template component |
| CN101831976A (en) * | 2009-12-24 | 2010-09-15 | 湖南大学 | Prefabricated steel rib bottom plate-concrete overlapped hollow floor system |
| CN102787689A (en) * | 2012-07-31 | 2012-11-21 | 长沙远大住宅工业有限公司 | Prefabricated overlapped hollow floor and fabricating method thereof |
| CN208981597U (en) * | 2018-09-28 | 2019-06-14 | 湖南恒邦建工有限公司 | A kind of laminated floor slab |
| CN213115148U (en) * | 2020-07-13 | 2021-05-04 | 杭州中联筑境建筑设计有限公司 | Light superimposed sheet |
| CN216239247U (en) * | 2021-09-14 | 2022-04-08 | 广东省建科建筑设计院有限公司 | Laminated floor slab with hollow mold |
| CN216766433U (en) * | 2021-10-27 | 2022-06-17 | 广东省建科建筑设计院有限公司 | Superposed hollow floor slab with formwork |
-
2021
- 2021-10-27 CN CN202111258222.XA patent/CN114277991A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190396A (en) * | 2002-12-12 | 2004-07-08 | Tokyo Eruguudo Kk | Half precast floor slab and construction method of floor using the same |
| CN1847553A (en) * | 2005-04-16 | 2006-10-18 | 邱则有 | In-situ cast hollow concrete slab |
| CN101230671A (en) * | 2007-01-28 | 2008-07-30 | 邱则有 | Force-bearing type template component |
| CN101831976A (en) * | 2009-12-24 | 2010-09-15 | 湖南大学 | Prefabricated steel rib bottom plate-concrete overlapped hollow floor system |
| CN102787689A (en) * | 2012-07-31 | 2012-11-21 | 长沙远大住宅工业有限公司 | Prefabricated overlapped hollow floor and fabricating method thereof |
| CN208981597U (en) * | 2018-09-28 | 2019-06-14 | 湖南恒邦建工有限公司 | A kind of laminated floor slab |
| CN213115148U (en) * | 2020-07-13 | 2021-05-04 | 杭州中联筑境建筑设计有限公司 | Light superimposed sheet |
| CN216239247U (en) * | 2021-09-14 | 2022-04-08 | 广东省建科建筑设计院有限公司 | Laminated floor slab with hollow mold |
| CN216766433U (en) * | 2021-10-27 | 2022-06-17 | 广东省建科建筑设计院有限公司 | Superposed hollow floor slab with formwork |
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Application publication date: 20220405 |
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