CN206189724U - Empty core plate of precast prestressed - Google Patents
Empty core plate of precast prestressed Download PDFInfo
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- CN206189724U CN206189724U CN201621144106.XU CN201621144106U CN206189724U CN 206189724 U CN206189724 U CN 206189724U CN 201621144106 U CN201621144106 U CN 201621144106U CN 206189724 U CN206189724 U CN 206189724U
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- precast prestressed
- cored slab
- utility
- prestressed cored
- pour mass
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Abstract
The utility model belongs to prefabricated assembly structure design and construction field specifically is an empty core plate of precast prestressed, including the steel framework and the pouring body, steel framework adopts prestressing steel to found to form, prestressing steel handles through tensile, the pouring body forms in steel framework through covering concrete pouring ladle in the mould to the pouring body is at the hollow through -hole of seting up the even interval distribution of a plurality of along length direction, stair structure has been seted up at the both sides plane symmetry to the pouring body, stair structure includes convex surface and concave surface, contact surface when the convex surface is adjacent two hollow core slab installation, set up the hoist and mount groove along empty core plate of precast prestressed length direction on the concave surface. The utility model discloses an empty core plate, the span is big, the face is level and smooth, need not to support at the bottom of the board, can be directly as construction operation platform, and construction speed is fast, can be applied to all prefabricated building.
Description
Technical field
The utility model belongs to prefabricated construction design and construction field, specially a kind of precast prestressed hollow
Plate.
Background technology
At present, with industry and the development need of civil buildings, requirement of the people to building large space is further strong.In addition
As country advocates building industrialization energetically, this form of construction work of prefabrication and assembly construction is increasingly taken seriously.Traditional cast-in-place construction
It is long to there is the construction period in mode, and shuttering supporting is complicated, and Span Slab construction quality is poor, and thickness of slab pours not in place, environmental pollution
The shortcomings of degree is high.And at present in prefabrication, domestic floor it is prefabricated most be using solid superimposed sheet, it is this
Plate limitation in terms of floor span is very big, it is impossible to meet large span demand, and it is complex to construct, and operation is more, after installation
Cored slab and cored slab between shearing force cannot be guaranteed.In addition also there are many prestressed hollow slabs on the market, but due to
The reason for form that punches and the rate that punches etc. are different, economy and stress performance also have the space of lifting.
Such as Chinese patent CN203834769U, disclose steel bar truss floor support plate cassette ceiling, including multiple by template and
It is erected at the framework of template top and the multiple steel bar girders composition being connected with described template, although its Forming Quality is good, energy
Effectively mitigate floor deadweight, material-saving consumption, while the rigidity and sound insulation property of floor can be improved, but its needs scene is applied
Work, and great deal of steel is needed, while also having requirement higher to the quality of steel, this causes the financial cost of cassette ceiling significantly
Increase, and it is anti-shearing between the local anti-pressure ability and cassette ceiling and cassette ceiling of cassette ceiling in the actual application
Performance also cannot be guaranteed.The Chinese patent for having CN201320705360.2 again discloses a kind of full prefabricated hollow floor, described
Floor main body includes bottom, hollow device and top layer, is hollow device between bottom and top layer.Although it alleviates floor itself
Weight, so as to mitigate the weight of whole building thing, but its preparation process is complicated, during practical application, floor it is anti-
Pressure energy power, the resistance to ability expanded with heat and contract with cold, part are to the mechanics such as anti-shear performance between the endurance and floor and floor of high pressure
Performance cannot be guaranteed.Therefore, necessary design one kind can overcome disadvantages mentioned above and can improve economy and stress performance
Prestressed hollow slab.
Utility model content
The utility model provides a kind of precast prestressed cored slab, and prepared precast prestressed hollow span of slab is big, plate
Face is smooth, plate bottom need not support, can be directly as construction operation platform, and speed of application is fast, can be applied to all prefabrication and assembly constructions
Formula is built.
To realize above-mentioned technical purpose, the specific technical scheme that the utility model is taken is：
A kind of precast prestressed cored slab, including steel bar framework and pour mass；The steel bar framework is to use prestressing force
Reinforcing bar is built-up；The stretched treatment of deformed bar；The pour mass is poured into a mould in a mold by by concrete
Steel bar framework is coated on to form, and pour mass offers the hollow bore that several uniform intervals are distributed along its length；
The hollow bore includes the rib of slab of two cambered surfaces of two cambered surfaces of setting symmetrical above and below and connection；The pour mass is in two sides pair
Title offers ledge structure；The ledge structure includes convex surface and concave surface；Installed for two neighboring precast hollow slab on the convex surface
When contact surface；On the concave surface lifting groove is being offered along precast prestressed cored slab length direction.
Used as the improved technical scheme of the utility model, the slump of the concrete is zero.
Used as the improved technical scheme of the utility model, the two sides between the cambered surface of the hollow bore two are vertical plane.
Used as the improved technical scheme of the utility model, the hollow bore quantity is 3-8.
Used as the improved technical scheme of the utility model, the lifting groove is located at pour mass side surface upper part.
Used as the improved technical scheme of the utility model, the convex surface is located at cast body side surface bottom.
The utility model beneficial effect：
1st, the ratio of mud for making the utility model product is low, and concrete strength is high, can reach 50 ~ 60N/mm2；Normal temperature is transferred
Put 16 hours, can reach 27 ~ 30N/mm2；Steam curing is used in ice box, cutting intensity is can reach within 12 hours（26N/
mm2）, prefabricated speed is fast；
2nd, fast compared to cast-in-situ floor speed of application, big compared to non-prestressed floor span, the scope of application is wider；
3rd, compared to like product, this product section hole area is big, mitigates deadweight, while material-saving；
4th, the product length can arbitrarily cut according to requirements；
5th, the design of cored slab side lifting groove solves the problems, such as that cored slab need in addition set suspension hook, and cause cored slab and
The shear connector formed between cored slab is effectively transmitted, and makes floor system more safe and reliable, good integrity；
6th, without any plate bottom seal or template during the cementation of fissures between the design on cored slab bottom convex surface causes plate；
In sum, cored slab of the present utility model, span is big, plate face is smooth, plate bottom without support, can be directly as applying
Work operating platform, and speed of application is fast, can be applied to all prefabrications.
Brief description of the drawings
A kind of Fig. 1 structural representations of precast prestressed cored slab of the present utility model；
In figure：1st, hollow bore；2nd, groove is lifted；3rd, pour mass；4th, convex surface；5th, rib of slab.
Specific embodiment
To make the purpose and technical scheme of the utility model embodiment clearer, implement below in conjunction with the utility model
The accompanying drawing of example, the technical scheme to the utility model embodiment is clearly and completely described.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments.Based on described embodiment of the present utility model,
The every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, belongs to this practicality
Novel protected scope.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein（Including technology art
Language and scientific terminology）With with the utility model art in those of ordinary skill general understanding identical meaning.Also
It should be understood that those terms defined in such as general dictionary should be understood that with the context of prior art in
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
The implication of " connection " described in the utility model can be between part be directly connected to be part between
By being indirectly connected with for other parts.
A kind of precast prestressed cored slab, including steel bar framework and pour mass 3；The steel bar framework is to use prestressing force
Reinforcing bar is built-up；The stretched treatment of deformed bar；The pour mass 3 is poured into a mould in a mold by by concrete
Steel bar framework is coated on to form, and pour mass 3 offers the hollow bore that several uniform intervals are distributed along its length
1；The hollow bore 1 includes the rib of slab 5 of two cambered surfaces of two cambered surfaces of setting symmetrical above and below and connection.
Used as the improved technical scheme of the utility model, the pour mass 3 symmetrically offers ledge structure in two sides；Institute
Stating ledge structure includes convex surface 4 and concave surface；The convex surface 4 is contact surface when two neighboring precast hollow slab is installed, and convex surface 4 sets
In cast body side surface bottom；On the concave surface lifting groove 2, the lifting are being offered along precast prestressed cored slab length direction
Groove 2 is located at pour mass side surface upper part.The lifting set by cored slab side rational position is from solving the problems, such as lifting and can be used as knot
A part of stress of structure；By the setting on cored slab convex surface 4, shear key is poured after the sealing of Method Pre-stress Concrete Hollow Slab bottom is made each
Uniformly.In addition, in actual application, the plate bottom convex surface 4 of each cored slab is combined closely during lifting, has lifted rear cored slab
Plate stitch uses mortar or the pea gravel concreten cementation of fissures, without arranging plate end template, and passes through crack pouring concrete and lifts groove 2
With reference to, strong shear key is formd, also can Transfer of Shear in the case of not configuration reinforcement.
Used as the improved technical scheme of the utility model, the slump of the concrete is zero, and this concrete strength is high,
50 ~ 60N/mm2 is can reach, the intensity of cored slab is also improved.
A kind of preparation method of precast prestressed cored slab, comprises the following steps：
Step one, by deformed bar colligation into steel bar framework, and straining device by two is carried out to steel bar framework
Tensioning is processed；
Step 2, the concrete that preparation slump is zero, concrete is poured in a mold by carrier of steel bar framework
Build, obtain pouring product；
Step 3, to pour product polish before and after extrusion and vibration treatment, level and the treatment of side mould and be molded and obtain just
Product；
Step 4, first product is cut the precast hollow slab for both having obtained required size on demand, generally, normal
Temperature is lower to be placed 16 hours or is cut using the size that steam curing can carry out cored slab for 12 hours in ice box.
Preferably six holes of hollow bore 1, five holes or four holes in the present embodiment, open-cellular form use arch symmetrical above and below, side
Wall which kind of hole and which kind of thickness of slab can be selected according to the span of design needs and load using the rib of slab 5 of vertical wall.
Advantage of the present utility model is：
1st, efficiently opening the form of hollow bore 1 enables cored slab to ensure the carrying of itself in construction and operational phase
Also more preferable economy has been obtained while power.
When the 2nd, lifting lifting groove 2 can make fixture firmly clamp cored slab to sling without slipping, it is to avoid other setting
The problem of suspension hook, and notch sets simple；And in actual application, after floor is arranged using meet require mortar or
The pea gravel concreten cementation of fissures forms shear key, can be by this shear key Transfer of Shear between plate and plate when design strength is reached.
3rd, because the size of cored slab is point-device, error very little, when every piece of cored slab is close to arrangement, can guarantee that
The width of each shear key is extremely close, and bottom is seamless during the cementation of fissures.
Implementation method of the present utility model is these are only, its description is more specific and detailed, but can not therefore understood
It is the limitation to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, not taking off
On the premise of conceiving from the utility model, various modifications and improvements can be made, these belong to protection of the present utility model
Scope.
Claims (6)
1. a kind of precast prestressed cored slab, it is characterised in that including steel bar framework and pour mass；The steel bar framework is to adopt
It is built-up with deformed bar；The stretched treatment of deformed bar；The pour mass be by by concrete in mould
Cast is coated on steel bar framework and forms in tool, and pour mass offers the sky that several uniform intervals are distributed along its length
Heart through hole；The hollow bore includes the rib of slab of two cambered surfaces of two cambered surfaces of setting symmetrical above and below and connection；The pour mass exists
Two sides symmetrically offer ledge structure；The ledge structure includes convex surface and concave surface；The convex surface is two neighboring prefabricated sky
Contact surface when core is installed；On the concave surface lifting groove is being offered along precast prestressed cored slab length direction.
2. a kind of precast prestressed cored slab according to claim 1, it is characterised in that the slump of the concrete is
Zero.
3. a kind of precast prestressed cored slab according to claim 1, it is characterised in that the cambered surface of the hollow bore two it
Between two sides be vertical plane.
4. a kind of precast prestressed cored slab according to claim 3, it is characterised in that the hollow bore quantity is 3-
8.
5. a kind of precast prestressed cored slab according to claim 1, it is characterised in that the lifting groove is located at pour mass
Side surface upper part.
6. a kind of precast prestressed cored slab according to claim 1, it is characterised in that the convex surface is located at cast side
Face bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144106.XU CN206189724U (en) | 2016-10-21 | 2016-10-21 | Empty core plate of precast prestressed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144106.XU CN206189724U (en) | 2016-10-21 | 2016-10-21 | Empty core plate of precast prestressed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206189724U true CN206189724U (en) | 2017-05-24 |
Family
ID=58732354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621144106.XU Active CN206189724U (en) | 2016-10-21 | 2016-10-21 | Empty core plate of precast prestressed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206189724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401052A (en) * | 2016-10-21 | 2017-02-15 | 季兆桐 | Prefabricated prestressed hollow slab and preparing method thereof |
| CN112962785A (en) * | 2021-02-03 | 2021-06-15 | 胡鹏 | Precast concrete hollow slab combined building and construction method thereof |
-
2016
- 2016-10-21 CN CN201621144106.XU patent/CN206189724U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401052A (en) * | 2016-10-21 | 2017-02-15 | 季兆桐 | Prefabricated prestressed hollow slab and preparing method thereof |
| CN112962785A (en) * | 2021-02-03 | 2021-06-15 | 胡鹏 | Precast concrete hollow slab combined building and construction method thereof |
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