CN204282686U - trough plate type prefabricated concrete stair - Google Patents
trough plate type prefabricated concrete stair Download PDFInfo
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- CN204282686U CN204282686U CN201420670950.0U CN201420670950U CN204282686U CN 204282686 U CN204282686 U CN 204282686U CN 201420670950 U CN201420670950 U CN 201420670950U CN 204282686 U CN204282686 U CN 204282686U
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- rib
- limit
- step plate
- prefabricated concrete
- end cross
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Abstract
A kind of trough plate type Prefabricated Concrete stair, comprise two limit ribs, step plate and end cross rib, it is characterized in that: described limit rib upper surface is between step plate exterior angle line and interior angle line, vertically reinforced mesh is embedded with in the rib of limit, described step plate is that the black triangle of solid matter is marked time or continuous print waveform plate, described end cross rib is located between the two ends of limit rib, limit rib, step plate and end cross rib monobloc cast concrete.Limit of the present utility model rib and step plate occlusion portion many, limit rib good stability, stair overall height is little.
Description
Technical field
The utility model relates to prefabricated units field, particularly relates to a kind of Prefabricated reinforced concrete stair.
Background technology
The prefabricated cantilever stair of high residential building adopts solid slab type stairway usually, from focusing on about 4 tons, common middle-size and small-size tower crane cannot be installed, and is therefore difficult to use in cast-in-place structural, and cast-in-situ stair complicated construction technique, operation is many, speed of application is slow, and cost is high, and disclosed in patent 201220403023.3, a kind of prefabricated light slab stair adopts multi-ribbed plate formula, though about weight reduction to 2.3 ton, be sometimes also difficult to the requirement meeting tower crane crane capacity.A kind of light prefabricated straight race cantilever stair from focusing on about 1.5 tons have not been reported.
Utility model content
Technical problem to be solved in the utility model is the deficiency overcoming above-mentioned prior art, provides a kind of from the trough plate type Prefabricated Concrete stair light, stress performance is good.
According to a kind of trough plate type Prefabricated Concrete stair that the utility model provides, comprise two limit ribs, step plate and end cross rib, described limit rib upper surface is between step plate exterior angle line and interior angle line, vertically reinforced mesh is embedded with in the rib of limit, described step plate is that the black triangle of solid matter is marked time or continuous print waveform plate, described end cross rib is located between the two ends of limit rib, limit rib, step plate and end cross rib monobloc cast concrete.
A kind of trough plate type Prefabricated Concrete stair provided according to the utility model also have following attached technical characteristic:
One, the upper end of described end cross rib is provided with shelves gap slot.
Described limit rib width 70-100mm, high 180-250mm.
Described reinforced mesh comprises two lengthways main steel bars and horizontal shear reinforcement, and the horizontal shear reinforcement arranged at a certain distance and lengthways main steel bar spot welding connect.
At least one, described limit rib is laterally provided with under step plate somely wears bolt hole.
A kind of trough plate type Prefabricated Concrete stair provided according to the utility model compared with prior art also tool have the following advantages
1, limit rib and step plate occlusion portion many, limit rib good stability, stair overall height is little.
2, adopt waveform to mark time, weight reduction of marking time, stair deadweight is less.
3, compressive reinforcement is joined on rib top in limit, and stair flexural strength improves, ductility is good.
4, stair concrete consumption is few, from heavy and light, reinforcing bar arrangement of reinforcement is reduced, and transport cost reduces, and cost is low.
Accompanying drawing explanation
Fig. 1 is top view of the present utility model
Fig. 2 is spandrel step slab-type apartment building of the present utility model ladder upward view
Fig. 3 is that waveform of the present utility model is marked time stair upward view
Fig. 4 is spandrel step detail drawing of the present utility model
Fig. 5 is that waveform of the present utility model is marked time detail drawing
Fig. 6 is drawing in side sectional elevation of the present utility model
Fig. 7 is mesh sheet muscle full-page proof of the present utility model
Fig. 8 is two pieces of combined staircase upward views of the present utility model
Fig. 9 is combined staircase monolithic top view of the present utility model
Detailed description of the invention
See Fig. 1 to Fig. 3, Fig. 6, at a kind of trough plate type Prefabricated Concrete stair that the utility model provides, comprise two limit ribs 1, step plate 2 and end cross rib 3, described limit rib 1 upper surface is between step plate 2 exterior angle line and interior angle line, reinforced mesh 11 is vertically embedded with in limit rib 1, described step plate 2 is that the black triangle of solid matter is marked time or continuous print waveform plate, and described end cross rib 3 is located between the two ends of limit rib 1, limit rib 1, step plate 2 and end cross rib 3 monobloc cast concrete.Limit rib 1 exceeds step plate 2 interior angle, can not affect and use and perception and result of use, but can reduce stair gross thickness, limit rib 1 is many with step plate 2 occlusion portion, make limit rib 1 good stability, vertical reinforcement mesh sheet can meet the bending resistance shearing resistance requirement of stair, and waveform step plate 2 can alleviate deadweight of marking time further, and does not affect result of use, during production in enormous quantities, the mould stand cost that disappears also can not improve, and end cross rib 3 can improve the lateral stiffness of stair end, and make laying end stressed evenly.
See Fig. 1 to Fig. 3, in above-described embodiment that the utility model provides, the upper end one butt cross rib of described end cross rib 3 is provided with shelves gap slot 31, shelves gap slot 31 and stair span can be made suitably to reduce, and is also convenient to staircase fire wall and arranges.
See Fig. 6, Fig. 7, in above-described embodiment that the utility model provides, described reinforced mesh 11 comprises two lengthways main steel bars 111 and horizontal shear reinforcement 112, the horizontal shear reinforcement 112 and lengthways main steel bar 111 spot welding that arrange at a certain distance connect, pulling force is born in two one, lengthways main steel bar 111 bottoms of reinforced mesh 11, one, top is compressive reinforcement, and compressive reinforcement can improve flexural strength and the ductility of stair rib.
See Fig. 1 to Fig. 8, in above-described embodiment that the utility model provides, 1 at least one, described limit rib is provided with in step plate 2 times transverse directions and somely wears bolt hole 12, when the elevating capacity of tower crane of constructing is less, 2 half making can be divided by stair, be spliced with bolt, the bolt hole 12 on limit rib 1 is for wearing coupling bolt again.
Claims (5)
1. trough plate type Prefabricated Concrete stair, comprise two limit ribs, step plate and end cross rib, it is characterized in that: described limit rib upper surface is between step plate exterior angle line and interior angle line, vertically reinforced mesh is embedded with in the rib of limit, described step plate is that the black triangle of solid matter is marked time or continuous print waveform plate, described end cross rib is located between the two ends of limit rib, limit rib, step plate and end cross rib monobloc cast concrete.
2. trough plate type Prefabricated Concrete stair as claimed in claim 1, is characterized in that one, the upper end of described end cross rib is provided with and shelve gap slot.
3. trough plate type Prefabricated Concrete stair as claimed in claim 1, is characterized in that described limit rib width 70-100mm, high 180-250mm.
4. trough plate type Prefabricated Concrete stair as claimed in claim 1, it is characterized in that described reinforced mesh comprises two lengthways main steel bars and horizontal shear reinforcement, the horizontal shear reinforcement arranged at a certain distance and lengthways main steel bar spot welding connect.
5. trough plate type Prefabricated Concrete stair as claimed in claim 1, is characterized in that at least one, described limit rib is laterally provided with under step plate and somely wear bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670950.0U CN204282686U (en) | 2014-11-12 | 2014-11-12 | trough plate type prefabricated concrete stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670950.0U CN204282686U (en) | 2014-11-12 | 2014-11-12 | trough plate type prefabricated concrete stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204282686U true CN204282686U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670950.0U Active CN204282686U (en) | 2014-11-12 | 2014-11-12 | trough plate type prefabricated concrete stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204282686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531777A (en) * | 2018-12-10 | 2019-03-29 | 天津城建大学 | A kind of bilayer box girder with variable cross section method for prefabricating |
-
2014
- 2014-11-12 CN CN201420670950.0U patent/CN204282686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109531777A (en) * | 2018-12-10 | 2019-03-29 | 天津城建大学 | A kind of bilayer box girder with variable cross section method for prefabricating |
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