CN201209290Y - Precast concrete beam - Google Patents
Precast concrete beam Download PDFInfo
- Publication number
- CN201209290Y CN201209290Y CNU2008200935907U CN200820093590U CN201209290Y CN 201209290 Y CN201209290 Y CN 201209290Y CN U2008200935907 U CNU2008200935907 U CN U2008200935907U CN 200820093590 U CN200820093590 U CN 200820093590U CN 201209290 Y CN201209290 Y CN 201209290Y
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- precast concrete
- main body
- concrete beam
- groove
- beam main
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Abstract
The utility model relates to a precast concrete beam which comprises a beam body composed of steel reinforcing bars and concrete for wrapping the steel reinforcing bars. The top surface of the beam body is provided with a layer with a superposed structure, the layer with a superposed structure is provided with a combed trace, a pressed trace and/or a washing trace of 2 to 10 mm in depth. The utility model realizes the close combination between a precast concrete beam and on-spot casting components and can effectively prevent the joint from falling off, sliding, and the like through a layer with a superposed structure, which is integrated with the beam body.
Description
Technical field
The utility model relates to building field, more particularly, relates to a kind of precast concrete beam.
Background technology
Along with the develop rapidly of Chinese Urbanization's, urban population density is increasing, and people are urgent day by day to the demand of dwelling house, and high stratification, maximization and the complexity of building improve constantly.And traditional building is all finished by site operation (for example poured in place concrete framework, flooring etc.), not only has the construction quality risk that causes because of constructor's technical level, and has the lower problem of efficiency of construction.
The industrialization of construction industry production technology is meant each branch's member of building (for example post, beam, flooring etc.) is processed in factory's centralized production, carries out scene allocation and transportation assembling construction.Adopt the construction industry equalization, not only improved the efficient of building, and can at utmost improve structure precision, solve common quality defects such as wall crazing, seepage, improve building performance, reduce and use energy consumption and build energy consumption, the protection environment.
High-rise, super building dwelling house is many to be main with frame structure, and selecting the compound worker's method of precast concrete for use by position (pillar, beam, floor, balcony etc.) is a development trend.And the precast concrete parts in use, occurs easily combining not closely between precast concrete parts and the cast in situs parts, causes situations such as the joint portion comes off, slip easily.
The utility model content
The technical problems to be solved in the utility model is, comes off easily at the joint portion of above-mentioned precast concrete parts and cast in situs parts.The defective of sliding provides a kind of precast concrete beam.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of precast concrete beam, comprise by reinforcing bar and wrap up the beam main body that the concrete of described reinforcing bar is formed, the end face of described beam main body has the iterative structure layer, and the surface of described iterative structure layer has comb trace, impression and/or the swash that the degree of depth is 2-10mm.
In precast concrete beam described in the utility model, described beam main body is horizontal cylindricality, and the end face of described beam main body is provided with along beam principal length direction and builds groove, and described iterative structure layer is positioned at described bottom of building groove.
In precast concrete beam described in the utility model, described comb trace, impression and/or swash account for the 30%-80% of whole iterative structure laminar surface area.
In precast concrete beam described in the utility model, described comb trace, impression and/or swash are groove and/or concave point.
In precast concrete beam described in the utility model, the both sides that the end face of described beam main body is built groove are provided with the frame shoulder that is used to support floor, the smooth surface of described shoulder.
In precast concrete beam described in the utility model, described both sides of building groove are positioned at the central authorities of beam main body end face, and along the length direction setting of beam main body.
In precast concrete beam described in the utility model, the width of each described shoulder is greater than 25mm.
Precast concrete beam of the present utility model, by with the iterative structure layer of main part one, realized combining closely between precast concrete beam and the cast in situs parts, can effectively avoid the coming off of joint portion, slip etc.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the utility model precast concrete beam.
The specific embodiment
As shown in Figure 1, be the structural representation of the embodiment of a kind of precast concrete beam of the utility model.This precast concrete beam comprises the beam main body of being made up of the concrete 12 of reinforcing bar 11 and parcel reinforcing bar 11 10.Usually this beam main body 10 is horizontal column, and the smooth surface of this prismatic beam main body (two faces that do not comprise the end).In the present embodiment, the end face of beam main body 10 has the iterative structure layer 13 with these beam main body 10 one, and the surface of this iterative structure layer 13 has comb trace, impression and/or the swash that the degree of depth is 2-10mm.The surface of this iterative structure layer 13 can only comprise comb any in trace, impression or the swash, also can comprise simultaneously wherein two or three.
On above-mentioned iterative structure layer 13, comb trace, impression and/or swash account for the 30%-80% of whole iterative structure laminar surface area.These comb traces, impressions and/or swash can grooves, also can be concave point.Above-mentioned comb trace, impression can use special-purpose bamboo broom, special-purpose comb to scan out after the concrete surface initial set, or use the end of reinforcing bar, wooden stick to haul out, and swash then can use giant to go out; After concrete setting, comb trace, impression and/or swash and promptly formed iterative structure layer 13.Certainly, above-mentioned iterative structure layer 13 also can otherwise be processed, and for example uses the mould of concave-convex surface.
When setting up this beam, the above-mentioned face of prefabricated iterative structure layer 13 and the cast in situs layer of comprising joins, make the concrete of cast in situs can be filled in above-mentioned comb trace, impression and/or the swash, can increase precast concrete plank and the existing force of sliding friction that waters between the overlapping layers, make between precast concrete plank and the cast-in-place overlapping layers and combine closely, prevent precast plate and in-situ layer dislocation when stressed.The degree of depth of comb trace, impression and/or swash is meant the distance of its top apart from the bottom, can be 2-10mm.Usually, the degree of depth of comb trace, impression and/or swash is big more, then reliable more with combining of in-situ layer, but the intensity of tabular main body 11 also can weaken.Evidence, degree of depth the best of comb trace, impression and/or swash is 5mm.
In other embodiment of the present utility model, the end face of the beam main body 10 of above-mentioned precast concrete beam also can be provided with along beam main body 10 length directions build groove 14, be frame shoulder 15 and build groove 14 both sides.This cross section of building groove 14 is a rectangle, and iterative structure layer 13 is positioned on the plane of the bottom of building groove 14.Usually build groove 14 and be positioned at the central authorities of beam main body 10 end faces, the width of the frame shoulder 15 of both sides is 25mm.After precast concrete beam sets up building, floor is set up frame shoulder 15, the concrete of cast in situs then is poured into builds in the groove 14 (and beam main body 10 tops).
Because above-mentioned precast concrete beam is built in precast yard, has got rid of cause influences such as being subjected to weather, personnel, technology, place and operating condition, working security improves.And the iterative structure layer of beam makes beam carry out more reasonable and high efficiency the joint and assembling with other cast-in-site members, can reduce the labour intensity and the labour hour of job site significantly, can lower the labor service expenditure.In addition, owing to need in the time of only need installing at the scene, beam and the assembling of other members not coupled together at the construction site casting beams, convenient construction is saved on-the-spot construction volume.Batch production generates the use of all right less timber, steel and on-the-spot various materials, helps the protection to environment, has reduced cost.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (7)
1, a kind of precast concrete beam, comprise by reinforcing bar and wrap up the beam main body that the concrete of described reinforcing bar is formed, it is characterized in that the end face of described beam main body has the iterative structure layer, the surface of described iterative structure layer has comb trace, impression and/or the swash that the degree of depth is 2-10mm.
2, precast concrete beam according to claim 1 is characterized in that, described beam main body is horizontal cylindricality, and the end face of described beam main body is provided with along beam principal length direction and builds groove, and described iterative structure layer is positioned at described bottom of building groove.
3, precast concrete beam according to claim 1 and 2 is characterized in that, described comb trace, impression and/or swash account for the 30%-80% of whole iterative structure laminar surface area.
4, precast concrete beam according to claim 3 is characterized in that, described comb trace, impression and/or swash are groove and/or concave point.
5, precast concrete beam according to claim 2 is characterized in that, the both sides that the end face of described beam main body is built groove are provided with the frame shoulder that is used to support floor, the smooth surface of described shoulder.
6, precast concrete beam according to claim 2 is characterized in that, described both sides of building groove are positioned at the central authorities of beam main body end face, and along the length direction setting of beam main body.
7, precast concrete beam according to claim 5 is characterized in that, the width of each described shoulder is greater than 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935907U CN201209290Y (en) | 2008-04-25 | 2008-04-25 | Precast concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935907U CN201209290Y (en) | 2008-04-25 | 2008-04-25 | Precast concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209290Y true CN201209290Y (en) | 2009-03-18 |
Family
ID=40480019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200935907U Expired - Lifetime CN201209290Y (en) | 2008-04-25 | 2008-04-25 | Precast concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209290Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793075A (en) * | 2010-03-03 | 2010-08-04 | 管乃彦 | Semi-precast beam |
| CN101565987B (en) * | 2008-04-25 | 2011-11-30 | 万科企业股份有限公司 | Precast concrete beam and fabricating method thereof |
| CN102852276A (en) * | 2012-08-15 | 2013-01-02 | 杨众 | Large-tonnage prestressed superposed crane beam and construction method |
-
2008
- 2008-04-25 CN CNU2008200935907U patent/CN201209290Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565987B (en) * | 2008-04-25 | 2011-11-30 | 万科企业股份有限公司 | Precast concrete beam and fabricating method thereof |
| CN101793075A (en) * | 2010-03-03 | 2010-08-04 | 管乃彦 | Semi-precast beam |
| CN102852276A (en) * | 2012-08-15 | 2013-01-02 | 杨众 | Large-tonnage prestressed superposed crane beam and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongguan Wanke Construction Technology Research Co Ltd Assignor: Wanke Enterprise Co., Ltd. Contract record no.: 2010990000942 Denomination of utility model: Mounting structure of precast concrete beam, mounting method and building Granted publication date: 20090318 License type: Exclusive License Record date: 20101203 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090318 |
|
| CX01 | Expiry of patent term |