CN215670403U - Double-hole prestressed reinforced concrete laminated slab - Google Patents
Double-hole prestressed reinforced concrete laminated slab Download PDFInfo
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- CN215670403U CN215670403U CN202121061166.6U CN202121061166U CN215670403U CN 215670403 U CN215670403 U CN 215670403U CN 202121061166 U CN202121061166 U CN 202121061166U CN 215670403 U CN215670403 U CN 215670403U
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Abstract
A double-hole prestressed reinforced concrete laminated slab relates to the technical field of building structural members, can improve bearing efficiency and has excellent integral stress performance; meanwhile, construction, transportation and installation can be facilitated, labor is saved, and production efficiency of the prefabricated slab is improved. Diplopore prestressed reinforced concrete superimposed sheet includes: the lower-layer precast slab comprises a precast slab body, the upper layer of the precast slab body is provided with a plurality of open semicircular holes, and a closed circular hole is correspondingly arranged below each open semicircular hole; after concrete is poured into the open semicircular hole, a cast-in-place concrete superposed layer which is connected with the lower precast slab and is provided with an occluded shear key is formed; the cast-in-place concrete superposed layer is provided with superposed layer steel bars, and the precast slab body of the lower precast slab is provided with prestressed steel bars and filling steel bars which are distributed in a crossed manner.
Description
Technical Field
The utility model relates to the technical field of building structural members, in particular to a double-hole prestressed reinforced concrete laminated slab.
Background
At present, the composite floor slab is an assembled integral floor slab formed by laminating precast slabs and cast-in-place reinforced concrete layers. The composite floor slab has good integrity, the upper and lower surfaces of the slab are smooth, the decoration of a finish coat is convenient, and the composite floor slab is suitable for high-rise buildings and large-bay buildings with higher requirement on the integral rigidity.
The reinforced concrete composite slab is a structural form combining prefabrication and cast-in-place. In the prior art, in the process of prefabricating the reinforced concrete composite slab, a prefabricated bottom plate is firstly arranged at the bottom, the prefabricated bottom plate plays a role of a template when upper-layer concrete is poured, and then the two parts form a carrier and bear load integrally.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a double-hole prestressed reinforced concrete laminated slab which can improve bearing energy efficiency and has excellent integral stress performance; meanwhile, construction, transportation and installation can be facilitated, labor is saved, and production efficiency of the prefabricated slab is improved.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a dual-hole prestressed reinforced concrete composite slab comprising: the lower-layer precast slab comprises a precast slab body, the upper layer of the precast slab body is provided with a plurality of open semicircular holes, and a closed circular hole is correspondingly arranged below each open semicircular hole; after concrete is poured into the open semicircular hole, a cast-in-place concrete superposed layer which is connected with the lower precast slab and is provided with an occluded shear key is formed; the cast-in-place concrete superposed layer is provided with superposed layer steel bars, and the precast slab body of the lower precast slab is provided with prestressed steel bars and filling steel bars which are distributed in a crossed manner.
The plurality of open semicircular holes are distributed on the upper surface layer of the prefabricated plate body at equal intervals, and the intervals are consistent with the radius of the closed circular holes.
Specifically, a second distance is arranged between the closed circular hole and the open semicircular hole, and the second distance is consistent with the radius of the closed circular hole.
Furthermore, the prestressed reinforcement includes many, and every the axis of prestressed reinforcement all with the axis of closed round hole is parallel.
Furthermore, a plurality of prestressed reinforcements are arranged below the closed round holes at equal intervals, and one prestressed reinforcement is arranged between every two closed round holes.
Still further, the prestressing steel bar and the embedment steel bar are vertically distributed.
Still further, the embedment reinforcing bar and the lamination layer reinforcing bar are distributed in parallel.
In practical application, the precast slab body is formed by pressing dry and hard concrete.
Compared with the prior art, the double-hole prestressed reinforced concrete laminated slab has the following advantages:
in the double-hole prestressed reinforced concrete composite slab provided by the utility model, because the upper layer of the lower layer prefabricated slab is provided with a plurality of open semicircular holes, and a closed circular hole is correspondingly arranged below each open semicircular hole, an engagement shear key for connecting a cast-in-place concrete superposed layer and the lower layer prefabricated slab can be formed after concrete is poured into the open semicircular holes, so that the lower layer prefabricated slab and the superposed layer cooperate together to form the double-hole prestressed reinforced concrete composite slab, the double-hole structure can improve the height of the cross section of the floor slab while saving the concrete consumption, improve the bearing energy efficiency, reduce the self weight of the floor slab so as to facilitate installation and transportation, thereby saving labor and improving the production efficiency of the prefabricated slab; in addition, after the rigidity of the floor slab is increased, a supporting template is not needed when the cast-in-place laminated layer is poured, and meanwhile, the laminated layer and the cast-in-place layer are conveniently formed into a whole after concrete is poured in the opening semicircular hole, so that the integral stress performance is guaranteed to be excellent.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a double-hole prestressed reinforced concrete laminated slab according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a double-hole prestressed reinforced concrete laminated slab according to an embodiment of the present invention.
Reference numerals:
1-lower prefabricated slab; 11-precast slab body; 12-opening semicircular holes; 13-closing the circular hole; 14-prestressed reinforcement; 15-embedding reinforcing steel bars;
2-cast-in-place concrete laminated layer; 21-a bite shear key; 22-laminated layer of steel reinforcement.
Detailed Description
For the convenience of understanding, the double-hole prestressed reinforced concrete laminated slab and the manufacturing method thereof according to the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
An embodiment of the present invention provides a double-hole prestressed reinforced concrete composite slab, as shown in fig. 2, including: the lower-layer precast slab 1 comprises a precast slab body 11, the upper layer of the precast slab body 11 is provided with a plurality of open semicircular holes 12, and a closed circular hole 13 is correspondingly arranged below each open semicircular hole 12; after concrete is poured into the open semicircular hole 12, a cast-in-place concrete superposed layer 2 which is connected with the lower precast slab 1 and is provided with an occluded shear key 21 is formed; the cast-in-place concrete superposed layer 2 is provided with superposed layer steel bars 22, and the precast slab body 11 of the lower precast slab 1 is provided with prestressed steel bars 14 and embedding steel bars 15 which are distributed in a crossed manner.
Compared with the prior art, the double-hole prestressed reinforced concrete laminated slab has the following advantages that:
in the double-hole prestressed reinforced concrete composite slab provided by the embodiment of the utility model, as the upper layer of the lower layer prefabricated slab 1 is provided with the plurality of open semicircular holes 12, and the closed circular hole 13 is correspondingly arranged below each open semicircular hole 12, the occluded shear key 21 connected with the cast-in-place concrete superposed layer 2 and the lower layer prefabricated slab 1 can be formed after the concrete is poured into the open semicircular holes 12, so that the lower layer prefabricated slab 1 and the superposed layer cooperate together to form the double-hole prestressed reinforced concrete composite slab, the double-hole structure can save the concrete consumption, improve the height of the cross section of the floor slab, improve the bearing energy efficiency, reduce the self weight of the floor slab so as to facilitate the installation and the transportation, thereby saving the labor and improving the production efficiency of the prefabricated slab; in addition, after the rigidity of the floor slab is increased, a supporting template is not needed when the cast-in-place laminated layer is poured, and meanwhile, the laminated layer and the cast-in-place layer are conveniently formed into a whole after concrete is poured in the opening semicircular hole, so that the integral stress performance is guaranteed to be excellent.
As shown in fig. 2, the plurality of open semicircular holes 12 may be equally spaced on the upper surface of the prefabricated panel body 11, and the spacing may preferably be consistent with the radius of the closed circular hole 13, so as to effectively ensure good performance of engaging the shear key 21.
Specifically, as shown in fig. 2, the closed circular hole 13 may have a second distance from the open semicircular hole 12, and the second distance may preferably be equal to a radius of the closed circular hole 12, so that the cross-sectional height of the floor slab is effectively ensured, and the bearing energy efficiency is improved.
Further, as shown in fig. 2, the prestressed reinforcement 14 may include a plurality of prestressed reinforcements, and an axis of each prestressed reinforcement 14 is parallel to an axis of the closed circular hole 13, so that the prestressed reinforcement 14 may be tensioned before the precast slab body 11 is poured, and after the strength of the precast slab body 11 meets the design requirement, the prestressed reinforcement 14 is released to form the lower precast slab 1.
Furthermore, as shown in fig. 2, the plurality of prestressed reinforcements 14 may preferably be located below the closed circular holes 13 at equal intervals, and one prestressed reinforcement 14 may be disposed between every two closed circular holes 13, so as to effectively ensure the rigidity of the floor slab.
Still further, as shown in fig. 2, the prestressed reinforcement 14 may be preferably vertically distributed with the embedded reinforcement 15, so that the prestressed reinforcement 14 and the embedded reinforcement 15 form a cross structure, and further, the rigidity of the floor slab is improved, and thus, a supporting template is not needed when the cast-in-place concrete laminated layer 2 is poured, and the integral stress performance of the floor slab can also be ensured.
Still further, as shown in fig. 2, the above-mentioned potting reinforcement 15 may preferably be arranged in parallel with the laminated reinforcement 22, so that the potting reinforcement 15 and the laminated reinforcement 22 correspond to each other, facilitating the cooperation of the lower precast slab 1 and the cast-in-place concrete laminated layer 2.
In practical application, the prefabricated slab body 11 may preferably be formed by pressing dry and hard concrete, so as to effectively ensure the flatness of the slab top, facilitate construction, save labor and improve the production efficiency of the prefabricated slab.
The embodiment of the utility model further provides a manufacturing method of the double-hole prestressed reinforced concrete laminated slab, which comprises the following steps as shown in figure 1:
step S1, tensioning the prestressed reinforcement before pouring the precast slab, and releasing the prestressed reinforcement after the strength of the precast slab meets the design requirement to form a lower-layer precast slab; the upper surface of the lower prefabricated plate is provided with a plurality of open semicircular holes, and a closed circular hole is correspondingly arranged below each open semicircular hole;
and step S2, after the lower precast slab is in place in the construction site, binding the superposed layer steel bars, pouring superposed layer concrete, and pouring concrete in the opening semicircular hole to form an occlusion shear key for connecting the cast-in-place concrete superposed layer and the lower precast slab so that the lower precast slab and the superposed layer cooperate together to form the double-hole prestressed reinforced concrete superposed slab.
In practical application, as shown in fig. 1, the method for manufacturing a double-hole prestressed reinforced concrete composite slab provided by the embodiment of the present invention may further include the following steps: and step S3, plugging two sides of the closed circular hole by using concrete to form an inner hollow.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A kind of diplopore prestressed reinforced concrete superimposed sheet, characterized by that, comprising: the lower-layer precast slab comprises a precast slab body, the upper layer of the precast slab body is provided with a plurality of open semicircular holes, and a closed circular hole is correspondingly arranged below each open semicircular hole; after concrete is poured into the open semicircular hole, a cast-in-place concrete superposed layer which is connected with the lower precast slab and is provided with an occluded shear key is formed; the cast-in-place concrete superposed layer is provided with superposed layer steel bars, and the precast slab body of the lower precast slab is provided with prestressed steel bars and filling steel bars which are distributed in a crossed manner.
2. The double-hole prestressed reinforced concrete laminated slab as claimed in claim 1, wherein a plurality of said open semi-circular holes are distributed at equal intervals on the upper surface layer of said prefabricated slab body, and said intervals are in accordance with the radius of said closed circular holes.
3. The double-hole prestressed reinforced concrete laminated slab according to claim 1 or 2, wherein said closed circular hole and said open semicircular hole have a second distance therebetween, and said second distance coincides with a radius of said closed circular hole.
4. The dual-hole prestressed reinforced concrete laminated slab as claimed in claim 1 or 2, wherein said prestressed reinforcement includes a plurality of said prestressed reinforcements, and the axis of each of said prestressed reinforcements is parallel to the axis of said closed circular hole.
5. The double-hole prestressed reinforced concrete composite slab as claimed in claim 4, wherein said plurality of prestressed reinforcements are located under said closed circular holes at equal intervals, and one prestressed reinforcement is disposed between every two closed circular holes.
6. The dual-hole prestressed reinforced concrete composite slab of claim 5, wherein said prestressed reinforcement is distributed perpendicular to said potting reinforcement.
7. The dual-hole prestressed reinforced concrete laminated slab of claim 6, wherein said potting reinforcing bars are distributed in parallel with said laminated layer reinforcing bars.
8. The double-hole prestressed reinforced concrete laminated slab as claimed in claim 1, wherein said precast slab body is pressed from dry hard concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121061166.6U CN215670403U (en) | 2021-05-18 | 2021-05-18 | Double-hole prestressed reinforced concrete laminated slab |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121061166.6U CN215670403U (en) | 2021-05-18 | 2021-05-18 | Double-hole prestressed reinforced concrete laminated slab |
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| CN215670403U true CN215670403U (en) | 2022-01-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235797A (en) * | 2021-05-18 | 2021-08-10 | 中国航天建设集团有限公司 | Double-hole prestressed reinforced concrete laminated slab and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113235797A (en) * | 2021-05-18 | 2021-08-10 | 中国航天建设集团有限公司 | Double-hole prestressed reinforced concrete laminated slab and manufacturing method thereof |
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