CN217204812U - Bidirectional prestressed prefabricated reinforced concrete hollow floor slab - Google Patents
Bidirectional prestressed prefabricated reinforced concrete hollow floor slab Download PDFInfo
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- CN217204812U CN217204812U CN202220995173.1U CN202220995173U CN217204812U CN 217204812 U CN217204812 U CN 217204812U CN 202220995173 U CN202220995173 U CN 202220995173U CN 217204812 U CN217204812 U CN 217204812U
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- floor slab
- reinforced concrete
- hollow floor
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Abstract
The utility model discloses a two-way prestressing force precast reinforced concrete hollow floor, including the floor main part, be provided with a plurality of first sleeves in the floor main part, fixed mounting has first connecting block in the floor main part, be provided with the montant on the first connecting block, every first sleeve all with montant fixed connection, threaded connection has a plurality of bolts on the first connecting block, every the equal and first sleeve threaded connection who corresponds of bolt. The utility model discloses can be through mutually supporting of first connecting block and second connecting block, with two more inseparable links together of hollow floor, even hollow floor receives long-time vibration, also be difficult for producing crackle to improve the security in house.
Description
Technical Field
The utility model relates to a prefabricated hollow floor technical field especially relates to a two-way prestressing force prefabricated reinforced concrete hollow floor.
Background
The prestressed concrete technology has been applied in China for many years, the prestressed concrete can give full play to the respective characteristics of the steel bars and the concrete, can improve the strength, the crack resistance and the durability of reinforced concrete members, and is commonly used for manufacturing prestressed prefabricated reinforced concrete hollow floor slabs.
When the existing two prestressed precast reinforced concrete hollow floor slabs are connected, cast-in-place concrete is generally improved to realize simple connection, and when the hollow floor slabs are vibrated for a long time, cracks are easily generated at the connection parts, so that the safety of a house is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving following shortcoming among the prior art, when carrying out connection construction between two blocks of prestressing force prefabricated reinforced concrete hollow floor boards now, generally all improve cast in situ concrete and realize simple connection, receive long-time vibration when hollow floor board, its junction very easily produces the crackle to the security in house reduces, and the two-way prestressing force prefabricated reinforced concrete hollow floor board who proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two-way prestressing force prefabricated reinforced concrete hollow floor, includes floor main body, the last a plurality of first sleeves that are provided with of floor main body, fixed mounting has first connecting block on the floor main body, be provided with the montant on the first connecting block, every first sleeve all with montant fixed connection, threaded connection has a plurality of bolts on the first connecting block, every the bolt all with the first sleeve threaded connection who corresponds.
Preferably, a plurality of horizontal reinforcing bars of floor main part fixedly connected with, a plurality of vertical reinforcing bars of fixedly connected with on the floor main part, every horizontal reinforcing bar all with corresponding first sleeve fixed connection.
Preferably, fixed mounting has the second connecting block on the floor main part, two draw-in grooves have been seted up on the second connecting block, a plurality of first openings have been seted up on the second connecting block.
Preferably, the first connecting block is connected with two second sleeves in a sliding mode, each second sleeve is connected with a corresponding clamping groove in a clamping mode, and each second sleeve is connected with a corresponding vertical rod in a clamping mode.
Preferably, the first connecting block is fixedly connected with a fixing block, and each bolt is in sliding connection with the fixing block.
Preferably, a plurality of second openings are formed in the floor slab main body, and the second openings are arranged at equal intervals.
Compared with the prior art, the beneficial effects of the utility model are that:
after the hollow floor slab is poured, acting force is applied to the two floor slab main bodies respectively, the two floor slab main bodies are enabled to be close to each other, the first sleeves are enabled to slide relative to the corresponding transverse steel bars respectively, one ends of the transverse steel bars abut against the inner walls of the first sleeves, acting force is applied to the bolts again, the transverse steel bars are extruded until the bottom ends of the bolts, acting force is applied to the second sleeves again, the second sleeves are enabled to be clamped with the vertical rods, concrete is poured at the upper end of the first connecting block finally, the bolts are prevented from rotating, the two hollow floor slabs can be connected together more closely through the mutual matching of the first connecting block and the second connecting block, even if the hollow floor slab is vibrated for a long time, cracks are not prone to being generated, and accordingly the safety of a house is improved.
Drawings
Fig. 1 is a schematic front structural view of a bidirectional prestressed precast reinforced concrete hollow floor slab provided by the utility model;
fig. 2 is a schematic front sectional structural view of a bidirectional prestressed precast reinforced concrete hollow floor slab provided by the utility model;
fig. 3 is a schematic view of a top view structure of a bidirectional prestressed precast reinforced concrete hollow floor slab provided by the utility model;
fig. 4 is a schematic view of a top-down section structure of a bidirectional prestressed precast reinforced concrete hollow floor slab provided by the utility model;
fig. 5 is the utility model provides a structure schematic diagram is looked to the right side of two-way prestressing force precast reinforced concrete hollow floor.
In the figure: 1 floor main part, 2 vertical reinforcing bars, 3 draw-in grooves, 4 second connecting blocks, 5 fixed blocks, 6 horizontal reinforcing bars, 7 first sleeves, 8 second sleeves, 9 first connecting blocks, 10 first openings, 11 bolts, 12 montants, 13 second openings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the present invention, the terms such as "upper", "lower", "left", "right", "middle" and "one" are also used only for the sake of clarity, but not for limiting the range of the present invention, and the changes or adjustments of the relative relationships thereof are not essential to change the technical content, and thus the present invention is also regarded as the practicable scope.
Referring to fig. 1-5, a two-way prestressing force precast reinforced concrete hollow floor slab, includes floor slab main part 1, has seted up a plurality of second openings 13 on the floor slab main part 1, and a plurality of second openings 13 are the equidistance setting, and the setting of a plurality of second openings 13 can alleviate the weight of floor slab main part 1 for it is more convenient to pour the construction.
The floor slab main body 1 is provided with a plurality of first sleeves 7, a first connecting block 9 is fixedly arranged on the floor slab main body 1, a vertical rod 12 is arranged on the first connecting block 9, each first sleeve 7 is fixedly connected with the vertical rod 12, a plurality of bolts 11 are connected with the first connecting block 9 in a threaded manner, a fixed block 5 is fixedly connected with the first connecting block 9, each bolt 11 is slidably connected with the fixed block 5, the fixed block 5 is arranged, can increase bolt 11's stress surface, improve bolt 11's stability, 7 threaded connection of the equal and first sleeve that correspond of every bolt 11, a plurality of horizontal reinforcing bars 6 of 1 fixedly connected with of floor main part, a plurality of vertical reinforcing bars 2 of fixedly connected with on the floor main part 1, every horizontal reinforcing bar 6 all with the 7 fixed connection of the first sleeve that corresponds, the setting of horizontal reinforcing bar 6 and vertical reinforcing bar 2 can improve floor main part 1's intensity, crack resistance and durability.
Fixed mounting has second connecting block 4 on floor main body 1, two draw-in grooves 3 have been seted up on second connecting block 4, a plurality of first openings 10 have been seted up on second connecting block 4, the setting of draw-in groove 3, make things convenient for second connecting block 4 to connect through second sleeve 8 and first connecting block 9, first opening 10's setting, make things convenient for vertical reinforcing bar 2 and bolt 11 to connect, thereby improve the stability of connecting, sliding connection has two second sleeves 8 on the first connecting block 9, every second sleeve 8 all with the draw-in groove 3 joint that corresponds, every second sleeve 8 all with the 12 joints of montant that correspond, through with second sleeve 8 and draw-in groove 3 and 12 joints of montant, can improve the stability of connecting.
The method for pouring the hollow floor slab comprises the following steps of performing rib-jumping pouring, and performing two-time pouring and one-time forming, so that anti-floating treatment is facilitated, air is removed, the bottom concrete is guaranteed to be compact, the slump of the bottom layer is guaranteed to be between 200 and 220mm during pouring, a cavity is easily formed at the bottom part with too small slump, the slump of the concrete poured on the surface layer can be 180 and 200mm, and when the thickness of the concrete poured on the bottom layer is within 60mm, fine stone concrete with the particle size within 16mm is adopted; when the thickness is larger than or equal to 70mm, common concrete can be adopted, the first pouring does not exceed about 2/5 of the thickness of the whole hollow floor slab, vibration is vertically inserted, quickly inserted, slowly pulled, does not depend on a gypsum mould box, does not depend on reinforcing steel bars or other embedded parts, vibration leakage does not occur, holes are easily formed due to vibration leakage, the vibration time is the same as that of the common concrete slab, no bubbles are generated, the gypsum mould box does not sink remarkably, and the pouring is finished before the initial setting of the first pouring, taking C30 as an example, the initial setting time is generally 2 hours in spring and autumn, 1 hour in summer, and 3-4 hours in winter.
In the utility model, when the hollow floor slab is needed to be used, firstly, acting force is respectively exerted on two floor slab main bodies 1 to enable the two floor slab main bodies 1 to be close to each other, the first connecting block 9 on the floor slab main body 1 on the left side and the second connecting block 4 on the floor slab main body 1 on the right side are driven to slide relatively, a plurality of first sleeves 7 respectively slide relatively with the corresponding transverse reinforcing steel bars 6 until one end of the transverse reinforcing steel bar 6 is abutted against the inner wall of the first sleeve 7, then acting force is exerted on a plurality of bolts 11 to enable a plurality of bolts 11 and the corresponding first sleeves 7 to move relatively until the bottom ends of the bolts 11 extrude the transverse reinforcing steel bars 6, acting force is exerted on two second sleeves 8 to enable two second sleeves 8 to slide relatively with the second connecting blocks 4 and until two second sleeves 8 are clamped with the vertical rod 12, finally, concrete is poured at the upper end of the first connecting block 9, prevent that bolt 11 from rotating can, can be through mutually supporting of first connecting block 9 and second connecting block 4, with two more inseparable connections of hollow floor together, even the hollow floor receives long-time vibration, also be difficult for producing the crackle to improve the security in house.
In the present application, the terms "mounted," "connected," and "secured" are to be construed broadly unless otherwise specifically indicated and limited.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a two-way prestressing force prefabricated reinforced concrete hollow floor, includes floor main part (1), its characterized in that, be provided with a plurality of first sleeves (7) on floor main part (1), fixed mounting has first connecting block (9) on floor main part (1), be provided with montant (12) on first connecting block (9), every first sleeve (7) all with montant (12) fixed connection, threaded connection has a plurality of bolts (11) on first connecting block (9), every bolt (11) all with first sleeve (7) threaded connection that corresponds.
2. The bidirectional prestressed precast reinforced concrete hollow floor slab as claimed in claim 1, wherein a plurality of transverse steel bars (6) are fixedly connected to said floor slab body (1), a plurality of vertical steel bars (2) are fixedly connected to said floor slab body (1), and each of said transverse steel bars (6) is fixedly connected to a corresponding first sleeve (7).
3. The bidirectional prestressed precast reinforced concrete hollow floor slab as claimed in claim 1, wherein a second connecting block (4) is fixedly installed on the floor slab main body (1), two clamping grooves (3) are formed on the second connecting block (4), and a plurality of first openings (10) are formed on the second connecting block (4).
4. A bidirectional prestressed precast reinforced concrete hollow floor slab as claimed in claim 3, wherein said first connecting block (9) is slidably connected with two second sleeves (8), each of said second sleeves (8) is connected with a corresponding clamping groove (3) in a clamping manner, and each of said second sleeves (8) is connected with a corresponding vertical rod (12) in a clamping manner.
5. The bidirectional prestressed precast reinforced concrete hollow floor slab as claimed in claim 1, wherein said first connecting block (9) is fixedly connected with a fixing block (5), and each of said bolts (11) is slidably connected with the fixing block (5).
6. The bidirectional prestressed precast reinforced concrete hollow floor slab as claimed in claim 1, wherein said floor slab body (1) is provided with a plurality of second openings (13), and said plurality of second openings (13) are equidistantly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220995173.1U CN217204812U (en) | 2022-04-27 | 2022-04-27 | Bidirectional prestressed prefabricated reinforced concrete hollow floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220995173.1U CN217204812U (en) | 2022-04-27 | 2022-04-27 | Bidirectional prestressed prefabricated reinforced concrete hollow floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217204812U true CN217204812U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220995173.1U Active CN217204812U (en) | 2022-04-27 | 2022-04-27 | Bidirectional prestressed prefabricated reinforced concrete hollow floor slab |
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| Country | Link |
|---|---|
| CN (1) | CN217204812U (en) |
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2022
- 2022-04-27 CN CN202220995173.1U patent/CN217204812U/en active Active
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