CN216865770U - Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof - Google Patents
Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof Download PDFInfo
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- CN216865770U CN216865770U CN202220164413.3U CN202220164413U CN216865770U CN 216865770 U CN216865770 U CN 216865770U CN 202220164413 U CN202220164413 U CN 202220164413U CN 216865770 U CN216865770 U CN 216865770U
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Abstract
The utility model discloses a prefabricated reinforced concrete groove-shaped stair which is characterized by comprising a step structure (1) and side edge parts (2) positioned on two sides of the step structure (1), wherein the side edge parts (2) and the step structure (1) extend to the length of the whole groove-shaped stair, and the lower surfaces of the side edge parts (2) are lower than the lower surface of the step structure (1). The prefabricated reinforced concrete groove-shaped stair is different from the force transmission mode of the traditional plate-type stair, and the force applied to the step structure is transmitted to the side edge parts on two sides by the step plate; the side edge part bears the load of the step plate and transmits the load to the stair beam; because the side edge part has better rigidity, the thickness of the stair tread can be greatly reduced, the material is saved, and the self weight is reduced.
Description
Technical Field
The utility model relates to a prefabricated reinforced concrete groove-shaped stair and a connecting structure thereof, and belongs to the technical field of prefabricated stairs and prefabricated buildings.
Background
At present, because the personnel that carry out the engineering construction on the building site are less and less, its superiority is appearing increasingly to fabricated building, and prefabricated component kind is more and more. Corresponding to cast-in-place stairs, the time and labor consumption of on-site template manufacturing, reinforcement, concrete pouring and the like are realized, and compared with prefabricated stairs, the prefabricated stair has obvious advantages.
But the self-weight of the plate stair is very large and the lifting is inconvenient because of the lifting capacity and the economical efficiency of the prefabricated parts; and the consumption of concrete materials is large, so that the concrete is neither economical nor environment-friendly.
SUMMERY OF THE UTILITY MODEL
In order to reduce the dead weight of the prefabricated staircase, the utility model provides a prefabricated reinforced concrete groove-shaped staircase, which has the following specific technical scheme.
The prefabricated reinforced concrete groove-shaped stair is characterized by comprising a step structure and side edge parts positioned on two sides of the step structure, wherein the side edge parts and the step structure extend to the length of the whole groove-shaped stair, and the lower surfaces of the side edge parts are lower than the lower surfaces of the step structure.
By adopting the technical scheme, the side edge part can bear larger bending moment compared with the stepping structure, namely the bearing capacity is better than that of the stepping structure, the load of the stepping structure is transmitted to the side edge parts at two sides, and then the load is transmitted to the bracket support through the side edge part, so that the force transmission mode is different from the force transmission mode of the traditional plate type stair, and the side edge part has better rigidity, so that the thickness of the stepping structure can be greatly reduced, the material is saved, and the dead weight is reduced.
Furthermore, the cross section of the prefabricated reinforced concrete groove-shaped stair is in an inverted U shape. The inverted U-shaped stair is a groove-shaped stair, which is different from the prior plate-type stair.
Further, the height of the side edge portion is greater than the thickness of the side edge portion. The design can save concrete and steel, and can keep better rigidity under the condition of reducing self weight.
Further, the prefabricated reinforced concrete groove-shaped stair is integrally cast and molded.
Furthermore, the side edge parts and the step structures of the prefabricated reinforced concrete groove-shaped stairs are respectively prefabricated and formed.
Further, the lower surface of the step structure is an inclined plane or a stepped plane.
Based on the same invention concept, the utility model also relates to a connecting structure of the prefabricated reinforced concrete groove-shaped stair, wherein the lower end of the step structure and the lower ends of the side edge parts are both arranged on the bracket of the stair beam below; the upper end of the step structure is placed on the bracket of the upper stair step beam, and the upper ends of the side edge parts abut against the vertical surface of the upper stair step beam.
The prefabricated reinforced concrete groove-shaped stair is different from the force transmission mode of the traditional plate-type stair, and the force applied to the step structure is transmitted to the side edge parts on two sides by the step plate; the side edge part bears the load of the step plate and transmits the load to the stair beam; because the side edge part has better rigidity, the thickness of the stair tread (step structure) can be greatly reduced, the material is saved, and the dead weight is reduced.
Drawings
Fig. 1 is a top view of a prefabricated reinforced concrete grooved stair of the present invention;
FIG. 2 is a cross-sectional view taken along line 1-1 of FIG. 1;
FIG. 3 is a cross-sectional view (in one form) of section 2-2 of FIG. 1;
FIG. 4 is a cross-sectional view (in an alternative form) taken at 2-2 of FIG. 1;
fig. 5 is a cross-sectional view of section 3-3 of fig. 1.
In the figure: the stair tread comprises a step structure 1, side edge parts 2, a lower stair beam 3, a bracket 4 and an upper stair beam 5.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Referring to fig. 1-5, the prefabricated reinforced concrete groove-shaped stair comprises a step structure 1 and side edge parts 2 positioned at two sides of the step structure 1, wherein the side edge parts 2 and the step structure 1 extend to the length of the whole groove-shaped stair, and the lower surfaces of the side edge parts 2 are lower than the lower surface of the step structure 1; the cross section of the prefabricated reinforced concrete groove-shaped stair is in an inverted U shape. The lower surface of the step structure 1 may be an inclined surface (fig. 3) or a stepped surface (fig. 4).
During factory prefabrication production, the template is built through integral binding of the steel bars, and the whole prefabricated reinforced concrete groove-shaped stair is integrally cast and molded.
Preferably, the height of the side edge part 2 is larger than the thickness of the side edge part 2, and the design can save concrete and steel materials and can keep better rigidity of the side edge part 2 under the condition of reducing self weight.
The prefabricated reinforced concrete groove-shaped stair is also very simple to install, and the lower end of the step structure 1 and the lower end of the side edge part 2 are both placed on the bracket 4 of the stair beam 3 below; the upper end of the tread structure 1 rests on the corbels 4 of the upper stair step beam 5, and the upper ends of the side edge parts 2 abut against the vertical surface of the upper stair step beam 5. The installation mode of the groove-shaped stairs is very simple, and the stair is ensured to be stably installed and is favorable for proper elastic deformation under stress.
Adopt above-mentioned technical scheme, side portion 2 compares and to bear bigger moment of flexure in structure 1 of marking time, and the bearing capacity is superior to the structure of marking time promptly, and the load of structure 1 of marking time transmits the side portion 2 for both sides to both sides, and the bracket support is transmitted to the rethread side portion 2, and this kind of biography power mode is different from the biography power mode of traditional plate stair, because side portion has better rigidity, can reduce the thickness of the structure of marking time by a wide margin, save material alleviates the dead weight.
The embodiments of the present invention are described above with reference to the drawings, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. The prefabricated reinforced concrete groove-shaped stair is characterized by comprising a step structure (1) and side edge parts (2) positioned on two sides of the step structure (1), wherein the side edge parts (2) and the step structure (1) extend to the length of the whole groove-shaped stair, and the lower surfaces of the side edge parts (2) are lower than the lower surfaces of the step structure (1).
2. The prefabricated reinforced concrete groove-shaped stair as claimed in claim 1, wherein the prefabricated reinforced concrete groove-shaped stair is inverted U-shaped in cross section.
3. A prefabricated reinforced concrete grooved staircase according to claim 1, characterized in that the height of the side edges (2) is greater than the thickness of the side edges (2).
4. The prefabricated reinforced concrete grooved stair of claim 1, wherein the prefabricated reinforced concrete grooved stair is integrally cast.
5. The prefabricated reinforced concrete groove-shaped stair as claimed in claim 1, wherein the side edge parts and the step structures of the prefabricated reinforced concrete groove-shaped stair are prefabricated and formed respectively.
6. The prefabricated reinforced concrete grooved stairway as claimed in claim 1, characterized in that the lower surface of the tread structure (1) is a slope or a step.
7. A connection structure of prefabricated reinforced concrete grooved staircases as claimed in any one of claims 1 to 6, characterized in that the lower ends of said tread structures (1) and of the lateral edges (2) rest on the corbels of the lower stairway girders (3); the upper end of the stepping structure (1) is placed on a bracket of the upper stair beam (5), and the upper end of the side edge part (2) abuts against the vertical surface of the upper stair beam (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220164413.3U CN216865770U (en) | 2022-01-21 | 2022-01-21 | Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220164413.3U CN216865770U (en) | 2022-01-21 | 2022-01-21 | Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof |
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| CN216865770U true CN216865770U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220164413.3U Active CN216865770U (en) | 2022-01-21 | 2022-01-21 | Prefabricated reinforced concrete groove-shaped stair and connecting structure thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357026A (en) * | 2023-04-07 | 2023-06-30 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
| CN116357026B (en) * | 2023-04-07 | 2024-05-31 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
-
2022
- 2022-01-21 CN CN202220164413.3U patent/CN216865770U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357026A (en) * | 2023-04-07 | 2023-06-30 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
| CN116357026B (en) * | 2023-04-07 | 2024-05-31 | 山东华科规划建筑设计有限公司 | Profile steel concrete stair tread |
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