CN210597795U - Prefabricated prestressed concrete hollow slab with post-distributed pouring areas - Google Patents
Prefabricated prestressed concrete hollow slab with post-distributed pouring areas Download PDFInfo
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- CN210597795U CN210597795U CN201921366168.9U CN201921366168U CN210597795U CN 210597795 U CN210597795 U CN 210597795U CN 201921366168 U CN201921366168 U CN 201921366168U CN 210597795 U CN210597795 U CN 210597795U
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- main body
- slab
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- plate main
- hollow slab
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 15
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 9
- 238000010276 construction Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 9
- 238000005266 casting Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 15
- 238000003466 welding Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of building engineering, in particular to a precast prestressed concrete hollow slab with post-pouring areas distributed, which comprises a slab main body, wherein the post-pouring areas are reserved in the two ends of the upper surface and the middle positions of the two sides of the slab main body in a distributed manner, and vertical pore channels with the diameter of 100mm are reserved in the post-pouring areas at the ends; a plurality of through holes penetrating through the plate main body are formed in the plate main body, and reinforcing steel bars penetrating through the plate main body and penetrating through the plate main body from two ends are arranged in the plate main body below the through holes; the hollow slab adopting the structure has the advantages that two ends are respectively placed on the ear-picking beam and the common precast beam, the slab-slab and the beam-slab are connected to realize integral molding through local post-casting in the post-casting area, the obtained precast prestressed concrete hollow slab ribbed beam floor system which is distributed and provided with the post-casting area has unidirectional stress, the stress is clear, the hollow slab belongs to a full-assembly system, and the hollow slab has the characteristics of fast site construction, simple process, no need of vertical support, less wet operation, high assembly rate and good anti-seismic performance.
Description
Technical Field
The utility model belongs to the technical field of building engineering, concretely relates to divide and lay prefabricated prestressed concrete hollow slab in post-pouring district.
Background
The existing assembled floor system is mainly divided into a 'wet' floor system and a 'dry' floor system. The 'wet' floor system comprises an assembled integral floor system and a superposed floor system, the two floor systems need a large amount of concrete wet operation, the number of required templates and supports is large, the operation is complex, and the construction period is long; the assembled 'dry' floor system is mainly a fully prefabricated reinforced concrete floor system, the plate-plate and the beam-plate are connected by welding a large number of on-site embedded parts and cover plates, the system needs more embedded parts, is complex in construction and slow in speed, the welding quality is not easy to guarantee, and the construction cost is high.
The plate-plate connection in the assembled floor system is mainly two. The first connection is a method of directly pouring fine stone concrete or arranging reinforcing steel bars in reserved seams of prefabricated parts after the prefabricated parts are assembled, and pouring a superposed surface layer, the connection method has low industrialization degree and large self weight of the floor slab, the transmission path of the stress of the floor slab and the plane internal and plane external force of the floor slab is not clear after the cast-in-place layer is superposed, and meanwhile, the connection needs more wet operation and needs a large amount of support; the other method is to arrange embedded parts in the prefabricated slab and then connect the embedded parts through the cover plate in a welding manner, the cover plate in the dry-type connection is not firmly connected with the prefabricated slab in an anchoring manner and is easily influenced by the welding quality and temperature stress, and the construction period is longer and the construction cost is higher due to the fact that the number of the welded cover plates is larger, the number of the required embedded parts is larger and the welding difficulty is high in the construction process.
For beam-slab connection, the stirrups of the precast beams are extended out of the surface of precast concrete to form exposed stirrup rings, then the precast slabs are supported on the top surfaces of the beams, the reinforcing steel bars are lapped with each other and then are configured to cross the longitudinal steel bars, and finally, the concrete is integrally poured. The connection has small rotation restriction on the floor slab, the floor system has poor integrity and poor anti-seismic performance, and is difficult to prefabricate, the template is difficult to manufacture, assemble and disassemble, the engineering construction cost is high, and the construction space is narrow and the construction difficulty is high when the reinforcing steel bars at the joints are bound in the later period.
In summary, the existing precast slabs for floor systems have many defects, and how to provide a precast slab with a simpler structure, small construction difficulty, high assembly rate and good earthquake resistance becomes one of the problems to be solved in the field.
Disclosure of Invention
The utility model provides a precast prestressed concrete hollow slab with post-pouring areas distributed aiming at the defects of the prior art, which comprises a slab main body, the post-pouring areas are respectively reserved in the middle positions of the two ends and the two sides of the upper surface of the slab main body in a distributed manner, and vertical pore canals with the diameter of 100mm are reserved in the post-pouring areas at the ends; a plurality of through holes penetrating through the plate main body are formed in the plate main body, and reinforcing steel bars penetrating through the plate main body and penetrating through the plate main body from two ends are arranged in the plate main body below the through holes; the hollow slab adopting the structure has the advantages that two ends are respectively placed on the ear-picking beam and the common precast beam, the slab-slab and the beam-slab are connected to realize integral molding through local post-casting in the post-casting area, the obtained precast prestressed concrete hollow slab ribbed beam floor system which is distributed and provided with the post-casting area has unidirectional stress, the stress is clear, the hollow slab belongs to a full-assembly system, and the hollow slab has the characteristics of fast site construction, simple process, no need of vertical support, less wet operation, high assembly rate and good anti-seismic performance.
The utility model discloses an innovation part lies in having set up a plurality of back pouring district on hollow slab, the polylith hollow slab connects the back each other, the district is connected as an organic whole each other to the back of correspondence, the accessible is pour the district after this moment earlier lay the concrete to wait to pour half of thickness, then fill the reinforcing bar net piece that the net size is 100mm after making level roughly again, pour concrete and board upper surface parallel and level at last, thereby form holistic superstructure, this kind of hollow slab has realized the effective transmission of in-plane internal force between the board-the board and between the roof beam-the board, both avoided watering the operation behind a large amount of concrete in the present "wet-type" superstructure system, the obscure shortcoming of prefabricated plate atress has been prevented, need a large amount of built-in fitting and weldment work in the present "dry-type" superstructure system again simultaneously, and the construction degree of difficulty is big, engineering cost is not enough.
The utility model discloses a concrete technical scheme is:
a prefabricated prestressed concrete hollow slab with post-pouring areas distributed in a distributed manner comprises a slab main body, post-pouring areas are reserved in the two ends of the upper surface of the slab main body and the middle positions of the two sides of the upper surface of the slab main body in a distributed manner, and vertical pore channels with the diameter of 100mm are reserved in the post-pouring areas at the ends of the slab main body; a plurality of through holes penetrating through the plate main body are formed in the plate main body, and reinforcing steel bars penetrating through the plate main body and penetrating through the plate main body from two ends are arranged in the plate main body below the through holes;
the post-pouring areas at the two ends of the hollow slab with the structure are partially placed on the ear-picking beams and the common precast beams, and the beam-slab integral assembly is realized through the studs and post-pouring concrete; the rear pouring areas in the middle parts of the two sides and the rear pouring areas in the middle parts of the two sides of the adjacent hollow slab are correspondingly connected with each other, then the slab-to-slab integral assembly is realized through the cast concrete which is flush with the upper surface of the slab, and the integral floor system structure is obtained through the matching of the cast concrete and the slab, so that compared with the existing precast slab and the corresponding construction method, the precast slab has the characteristics of simple construction process, high assembly speed, less wet operation, high building assembly rate, no need of vertical support, low engineering cost and the like; the obtained floor system has the advantages of reducing the self weight of the structure, having better integrity, having the characteristics of large rigidity, good sound and heat insulation effect, convenient transportation and installation and the like, being flexible in combination, and being capable of meeting various requirements of opening holes, openings, plate end cantilevers or having larger concentrated loads and the like in the engineering. In order to facilitate the lateral connection of the hollow plates, the two sides of the main body of the hollow plate are provided with embedded lock type key groove structures.
The hollow slab is connected with the upper surface of the beam in a mode of pouring concrete in the hole through the shear-resistant studs, so that the structural strength of connection between the shear-resistant studs and the upper surface of the beam is enhanced, and meanwhile, a reinforcing mesh with the size of 100mm is fully paved in the rear pouring area, so that the strength of the cover plate can be further improved;
furthermore, the depth of the rear pouring area is generally controlled to be not more than the horizontal diameter of the through hole;
to sum up, adopt the utility model provides a hollow slab preparation obtains to distribute to set up the hollow slab rib beam superstructure of the hollow slab of the precast prestressed concrete who pours the district after and is one-way atress, and the atress is clear and definite, belongs to the full assembled system, has that the site operation is fast, simple process, need not vertical support, wet operation is few, the assembly rate is high, the characteristics that anti-seismic performance is good.
Drawings
FIG. 1 is a schematic structural view of a prefabricated prestressed concrete hollow slab of a casting area after distribution arrangement according to the present invention;
FIG. 2 is a schematic structural view of two pre-fabricated prestressed concrete hollow slabs which are distributed in a post-pouring area and are connected with each other;
FIG. 3 is a schematic structural view of a floor system obtained by using the prefabricated prestressed concrete hollow slabs of the pouring areas after the arrangement of the slabs;
in the drawing, 1 is a plate main body, 2 is a rear pouring area, 3 is a reinforcing steel bar, 4 is a vertical pore channel, and 5 is a through hole.
Detailed Description
A prefabricated prestressed concrete hollow slab with post-pouring areas distributed in a distributed manner comprises a slab main body 1, post-pouring areas 2 are reserved in the two ends and the middle positions of the two sides of the upper surface of the slab main body 1 in a distributed manner, and a plurality of vertical pore channels 4 with the diameter of 100mm are reserved in the post-pouring areas at the ends; a plurality of through holes 5 penetrating through the plate main body are formed in the plate main body 1, and reinforcing steel bars 3 penetrating through the plate main body and penetrating through the plate main body at two ends are arranged in the plate main body 1 below the through holes 5; the two sides of the hollow plate main body 1 are provided with embedded lock type key groove structures.
The post-pouring areas at the two ends of the hollow slab with the structure are partially placed on the ear-picking beams and the common precast beams, and the beam-slab integral assembly is realized through the studs and post-pouring concrete; the rear pouring areas in the middle parts of the two sides and the rear pouring areas in the middle parts of the two sides of the adjacent hollow slab are correspondingly connected with each other, then the slab-to-slab integral assembly is realized through the cast concrete which is flush with the upper surface of the slab, and the integral floor system structure is obtained through the matching of the cast concrete and the slab, so that compared with the existing precast slab and the corresponding construction method, the precast slab has the characteristics of simple construction process, high assembly speed, less wet operation, high building assembly rate, no need of vertical support, low engineering cost and the like; the obtained floor system has the advantages of reducing the self weight of the structure, having better integrity, having the characteristics of large rigidity, good sound and heat insulation effect, convenient transportation and installation and the like, being flexible in combination, and being capable of meeting various requirements of opening holes, openings, plate end cantilevers or having larger concentrated loads and the like in the engineering.
The diameter is the vertical pore of 100mm for reserving in the district of pouring behind the tip, this vertical pore sets up in the level to the through-hole, prevent that shear peg on the roof beam from colliding with the reinforcing bar of below between the two horizontal through-holes on the plate body during the assembly, the mode that can be convenient like this through the peg with pour concrete in the pore with hollow slab and roof beam upper surface connection, strengthen the structural strength of connection between them, the full bed net piece that the net size is 100mm in the district is pour to the back simultaneously, also can further improve the intensity of apron.
Claims (4)
1. The utility model provides a divide and arrange the hollow slab of precast prestressed concrete in back pouring district, this hollow slab includes board main part (1), its characterized in that: rear pouring areas (2) are reserved in the two ends and the middle parts of the two sides of the upper surface of the plate main body (1) in a distributed mode, and a plurality of vertical pore channels (4) with the diameter of 100mm are reserved in the rear pouring areas at the ends; a plurality of through holes (5) penetrating through the plate main body are arranged in the plate main body (1).
2. The prefabricated prestressed concrete hollow slab with post-cast pouring areas arranged according to claim 1, wherein: and reinforcing steel bars (3) penetrating through the plate main body and penetrating out of the plate main body at two ends are arranged in the plate main body (1) below the through hole (5).
3. The prefabricated prestressed concrete hollow slab with post-cast pouring areas arranged according to claim 1, wherein: and interlocking key groove structures are arranged on two sides of the hollow plate main body (1).
4. The prefabricated prestressed concrete hollow slab with post-cast pouring areas arranged according to claim 1, wherein: the vertical pore canal (4) is arranged in the horizontal through hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921366168.9U CN210597795U (en) | 2019-08-21 | 2019-08-21 | Prefabricated prestressed concrete hollow slab with post-distributed pouring areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921366168.9U CN210597795U (en) | 2019-08-21 | 2019-08-21 | Prefabricated prestressed concrete hollow slab with post-distributed pouring areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210597795U true CN210597795U (en) | 2020-05-22 |
Family
ID=70690595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921366168.9U Expired - Fee Related CN210597795U (en) | 2019-08-21 | 2019-08-21 | Prefabricated prestressed concrete hollow slab with post-distributed pouring areas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210597795U (en) |
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2019
- 2019-08-21 CN CN201921366168.9U patent/CN210597795U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 |