CN212984405U - Sectional type precast concrete stair - Google Patents
Sectional type precast concrete stair Download PDFInfo
- Publication number
- CN212984405U CN212984405U CN202021540720.4U CN202021540720U CN212984405U CN 212984405 U CN212984405 U CN 212984405U CN 202021540720 U CN202021540720 U CN 202021540720U CN 212984405 U CN212984405 U CN 212984405U
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- stair
- groove
- precast concrete
- prestressed
- inner diameter
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Abstract
The utility model discloses a sectional precast concrete stair, the precast floor slab of which is composed of at least two rectangular strip-shaped stair boards, the side surface of each stair board is provided with at least two circular prestressed tension through holes, the two ends of the prestressed tension through holes are respectively provided with a circular groove, and the inner diameter of the groove is larger than that of the prestressed tension through holes; the inner diameter of the groove is larger than the outer diameter of the prestressed stay cable; the problem of increased construction cost caused by the fact that a large-size tower crane is adopted due to the fact that the weight of the stair is large can be solved, the prestressed stay ropes are adopted to fix the multi-section stair, the effect is equal to that of a whole stair, and the influence on normal use of the stair is avoided; it provides the structural style of stair split, and too big to stair weight, need alleviate stair weight, the structure that can adopt this kind of segmentation to solve to improve efficiency of construction, labour saving and time saving.
Description
Technical Field
The utility model belongs to the technical field of building structure, especially, relate to a sectional type precast concrete stair.
Background
At present, the prefabricated concrete stair is the most commonly used prefabricated component in the fabricated building, and particularly in the residential building, the standard degree is very high, and the cost of stair prefabrication is far lower than the cost of cast-in-place. However, in some large public buildings, the prefabricated staircases can be used, because the floor height of public buildings is high, the stair span is large, the weight of the prefabricated staircases is very large, and some of the prefabricated staircases can exceed three tons, which brings great difficulty to component hoisting, the weight of the general prefabricated floorcases can not exceed two tons, but if only the tower cranes with large models are selected according to the weight of the staircases, the construction cost is greatly wasted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sectional type precast concrete stair to solve the problem that exists among the prior art because stair weight reason is compelled to adopt big tower crane and causes the cost extravagant.
In order to achieve the above object, the utility model adopts the following technical scheme:
the sectional type precast concrete stair comprises a precast floor slab, wherein the precast floor slab is composed of at least two rectangular strip-shaped stair plates (1), the side surface of each stair plate (1) is provided with at least two circular prestress tensioning through holes (2), two ends of each prestress tensioning through hole (2) are respectively provided with a circular groove (3), and the inner diameter of each groove (3) is larger than that of each prestress tensioning through hole (2); the inner diameter of the groove (3) is larger than the outer diameter of the prestressed inhaul cable; the stair plates (1) are transversely combined and connected side by side through prestressed cables arranged in the prestressed tensioning through holes (2).
It is also preferred that the width of the stair tread (1) is 300-.
It may also be preferred that the weight of the stair tread (1) is less than or equal to 1 ton.
It is also preferable that the inner diameter of the prestress tension hole (2) is 50 mm.
It is also preferred that the depth of the groove (3) is 30 mm.
It is also preferred that the inner diameter of the groove (3) is 80 mm.
The utility model discloses can reach following beneficial effect:
the sectional type precast concrete stair of the utility model can solve the problem that the construction cost is increased due to the adoption of a large-scale tower crane because the weight of the stair is larger in the prior art, and the prestressed stay cable is adopted to fix a plurality of sections of stairs, the effect is equal to that of a whole stair, and the influence on the normal use of the stairs is avoided; it provides the structural style of stair split, and too big to stair weight, need alleviate stair weight, the structure that can adopt this kind of segmentation to solve to improve efficiency of construction, labour saving and time saving.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is the utility model discloses a sectional type precast concrete stair's structural schematic.
Fig. 2 is a sectional view of the sectional type precast concrete stairway of the present invention shown in fig. 1.
In the figure, 1 is a stair tread, 2 is a prestress tension through hole, and 3 is a groove.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
A sectional type precast concrete stair comprises a precast floor slab, please see figures 1 and 2, wherein the precast floor slab is composed of at least two rectangular strip-shaped stair treads 1, the side surface of each stair 1 is provided with at least two circular prestress tensioning through holes 2, two ends of each prestress tensioning through hole 2 are respectively provided with a circular groove 3, and the inner diameter of each groove 3 is larger than that of each prestress tensioning through hole 2; the inner diameter of the groove 3 is larger than the outer diameter of the prestressed stay cable; the stair boards 1 are transversely connected in a combined mode side by side through prestress guys arranged in the prestress tension through holes 2.
The sectional type precast concrete stair of this embodiment falls into the multistage with the great stair of weight along stair walking direction, and hoist and mount the back and fix together multistage for the stair tread prestressing force cable, just so solved because stair weight reason is compelled to adopt big tower crane and cause the extravagant problem of cost.
Example 2
The segmented precast concrete stairway described in embodiment 1 can further have a width of the stair tread 1 of 300-500 mm. Such as a width of 300mm, 350mm, 400mm, 450mm or 500mm of the stair tread 1. The weight of the stair tread 1 is less than or equal to 1 ton. The internal diameter of the prestress tension through hole 2 is 50 mm. The depth of the groove 3 is 30 mm. The inner diameter of the groove 3 is 80 mm. The number of the prestressed tension holes 2 is preferably three or more. The depth of the groove 3 is larger than the fixed length of the anchor of the prestressed inhaul cable, namely the requirement that the anchor of the prestressed inhaul cable cannot protrude out of the side surface of the stair board 1 after being fixed is met. The stair boards 1 are provided with at least two steps. At least two stair boards 1 are transversely combined and connected side by side, the transverse combined and connected side by side of the at least two stair boards 1 is realized through a prestressed cable arranged in the prestressed tension through hole 2, and the end part of the prestressed cable is anchored in the groove 3 through an anchoring structure of the prestressed cable.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (6)
1. The sectional type precast concrete stair comprises a precast floor slab and is characterized in that the precast floor slab is composed of at least two rectangular strip-shaped stair treads (1), the side surface of each stair tread (1) is provided with at least two circular prestress tensioning through holes (2), two ends of each prestress tensioning through hole (2) are respectively provided with a circular groove (3), and the inner diameter of each groove (3) is larger than that of each prestress tensioning through hole (2); the inner diameter of the groove (3) is larger than the outer diameter of the prestressed inhaul cable; the stair plates (1) are transversely combined and connected side by side through the prestress stay cables arranged in the prestress tensioning through holes (2).
2. The segmented precast concrete stairway according to claim 1, wherein the width of the stair plates (1) is 300-500 mm.
3. The segmented precast concrete stair according to claim 2, wherein the weight of the stair tread (1) is less than or equal to 1 ton.
4. The segmented precast concrete stairway according to claim 3, wherein the inner diameter of the prestressed tension through hole (2) is 50 mm.
5. The segmented precast concrete stair according to claim 4, wherein the depth of the groove (3) is 30 mm.
6. The segmented precast concrete stair according to claim 5, wherein the inner diameter of the groove (3) is 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021540720.4U CN212984405U (en) | 2020-07-30 | 2020-07-30 | Sectional type precast concrete stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021540720.4U CN212984405U (en) | 2020-07-30 | 2020-07-30 | Sectional type precast concrete stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212984405U true CN212984405U (en) | 2021-04-16 |
Family
ID=75430316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021540720.4U Expired - Fee Related CN212984405U (en) | 2020-07-30 | 2020-07-30 | Sectional type precast concrete stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212984405U (en) |
-
2020
- 2020-07-30 CN CN202021540720.4U patent/CN212984405U/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 |
Granted publication date: 20210416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |