CN219528205U - Prefabricated stairway - Google Patents
Prefabricated stairway Download PDFInfo
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- CN219528205U CN219528205U CN202320197196.2U CN202320197196U CN219528205U CN 219528205 U CN219528205 U CN 219528205U CN 202320197196 U CN202320197196 U CN 202320197196U CN 219528205 U CN219528205 U CN 219528205U
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Abstract
The utility model discloses a prefabricated stair, wherein a prefabricated stair bench plate is obliquely arranged, a lower platform of the prefabricated stair is connected to the lower end of the prefabricated stair bench plate, and a prefabricated stair step is connected to the upper side surface of the prefabricated stair bench plate; the main body steel bars are arranged in the prefabricated stair tread plates and are parallel to the width direction of the prefabricated stair tread plates; the reserved steel bars are arranged in the prefabricated stair bench plate and are parallel to the length direction of the prefabricated stair bench plate, and the main body steel bars, the reserved steel bars and the prefabricated stair bench plate are connected through steel fiber concrete pouring; the upper end of the prefabricated stair bench plate is directly connected with the upper end ladder beam through reserved steel bars in a pouring mode, and the bracket at the platform is prevented from being exposed. The lower platform of the prefabricated stair is provided with a mounting hole, and the lower platform is connected with the lower end ladder beam in a pouring mode through a pin key arranged in the mounting hole, so that the connecting position of the fixed end of the lower platform is tightly fixed.
Description
Technical Field
The utility model belongs to the technical field of constructional engineering, and particularly relates to a prefabricated staircase.
Background
The building assembly is a development trend of the future building industry, and along with the development of the building assembly, the variety of building assembly components is increased. The assembled building can effectively reduce the wet workload of a construction site, thereby reducing construction noise, dust pollution and construction waste.
The prefabricated stairway is a part of an assembled structure, is also an important component of multi-storey and high-rise building construction, and is a main escape passage in the construction engineering. The traditional stairway mostly adopts a concrete cast-in-situ form, the construction method is old, the process is complicated, the construction period is long, and the construction cost is greatly increased.
Although the prefabricated stairway in the prior art basically solves the defects caused by the construction of the traditional cast-in-place concrete stairway, the prefabricated stairway still has the following problems: 1. the upper end fixing end and the lower end sliding end adopt structures of ladder beams and brackets, so that the brackets at the platform are exposed, visual aesthetic feeling is lacking, and the consumption of steel bars and concrete is increased; 2. the upper end fixed end and the lower end sliding end are connected with the building main body through the structure that the precast stairway is directly fixed by bolts and nuts after pouring, and the connecting position of the precast stairway fixed end is not tightly fixed due to the mechanical property of the concrete that the compression resistance is not tensile, so that the earthquake-resistant effect is poor.
Disclosure of Invention
In view of at least one of the above problems associated with prior art stairways, the present utility model provides a stairway in which the connection of the fixed ends is tightly secured and the exposure of brackets at the landing is avoided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the prefabricated staircase comprises a prefabricated staircase body, a body reinforcing steel bar and a reserved reinforcing steel bar, wherein the prefabricated staircase body comprises a prefabricated staircase lower platform, a prefabricated staircase bench plate and prefabricated staircase steps, the prefabricated staircase bench plate is obliquely arranged, the prefabricated staircase lower platform is connected with the lower end of the prefabricated staircase bench plate, and the prefabricated staircase steps are connected with the upper side surface of the prefabricated staircase bench plate; the lower platform of the prefabricated stair is provided with a mounting hole; the main body steel bars are arranged in the prefabricated stair bench plate and are parallel to the width direction of the prefabricated stair bench plate; the reserved steel bars are arranged in the prefabricated stair bench plate and are parallel to the length direction of the prefabricated stair bench plate, and the main body steel bars are connected with the prefabricated stair bench plate through steel fiber concrete pouring.
In the utility model, during installation, a pin key is arranged in the installation hole, and the lower platform of the prefabricated stair is connected with the lower end ladder beam through the pin key; the reserved steel bars extend into the upper end ladder beams and are connected with the upper end ladder beams in a pouring mode.
Preferably, a pin key is arranged in the mounting hole, and the lower platform of the prefabricated staircase is connected with the lower end ladder beam through the pin key; the reserved steel bars extend into the upper end ladder beams and are connected with the upper end ladder beams in a pouring mode.
Preferably, the reserved reinforcing steel bars comprise reserved top bars and reserved bottom bars.
Preferably, the upper end of the reserved top rib is horizontally bent towards the outside of the prefabricated stair bench plate and extends out of the prefabricated stair bench plate.
Preferably, the upper end of the reserved bottom rib extends to the outer side of the middle of the vertical section of the upper end ladder beam.
Preferably, a drip groove is arranged on one side of the prefabricated stair step adjacent to the shaft, and the length direction of the drip groove is parallel to the length direction of the prefabricated stair bench plate.
Preferably, the prefabricated stair steps are in a step shape, and the upper surface of the prefabricated stair steps is a step surface with a horizontal plane structure.
Preferably, the tread surface is provided with an anti-slip groove, and the length direction of the anti-slip groove is perpendicular to the length direction of the prefabricated stair bench plate.
Preferably, the number of the prefabricated stair steps is at least two, and the prefabricated stair steps are sequentially connected to the upper side surface of the prefabricated stair tread plate from bottom to top.
Preferably, the number of the main body reinforcing bars is at least two, and the main body reinforcing bars are divided into an upper layer and a lower layer, and the main body reinforcing bars of the upper layer and the lower layer are uniformly distributed in the prefabricated stair tread plate respectively.
The prefabricated staircase provided by the utility model has the following beneficial effects:
the upper end of the prefabricated stair section plate of the prefabricated stair body is directly connected with the upper end ladder beam in a pouring way through the reserved steel bars, so that the bracket at the platform is prevented from being exposed; the prefabricated stair lower platform is provided with a mounting hole, and is connected with the prefabricated stair lower platform through a pin key arranged in the mounting hole, so that the connecting position of the fixed end of the prefabricated stair lower platform is tightly fixed; the structure is reasonable, the manufacture is easy, the construction is convenient, and the construction progress can be accelerated; the stability of the prefabricated staircase can be improved, and the assembled assembly of the staircase is firmer; the deformation resistance and the mechanical strength of the prefabricated staircase can be improved, so that the prefabricated staircase is more convenient and flexible to apply, has stronger pertinence and practicability, and can be widely applied to various building engineering constructions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
figure 1 is a front view of the prefabricated staircase of the present utility model,
figure 2 is a top view of the prefabricated staircase body of the prefabricated staircase of the utility model,
figure 3 is a schematic view of the connection of the lower landing of the prefabricated staircase with the lower landing beam of the prefabricated staircase according to the utility model,
fig. 4 is a schematic view showing connection of the upper end of the prefabricated staircase section plate of the prefabricated staircase of the present utility model with the upper end landing beam.
Reference numerals in the drawings: 1 is a prefabricated stair body, 101 is a prefabricated stair lower platform, 111 is a mounting hole, 112 is a pin key, 113 is a mortar plugging layer, 114 is a gasket, 115 is a nut, 116 is an anchor head, 117 is a clearance cavity, 102 is a prefabricated stair tread plate, 121 is a main body reinforcing steel bar, 103 is a prefabricated stair tread, 2 is a lower end ladder beam, 211 is a felt layer, 212 is a cement mortar leveling layer, 213 is a polyphenyl filling layer, 214 is an grouting layer, 215 is a PE rod, 3 is steel fiber concrete, 4 is a reserved reinforcing steel bar, 401 is a reserved top bar, 402 is a reserved bottom bar, 5 is an upper end ladder beam, 501 is Liang Zhongxian, 6 is a drip groove, and 7 is an anti-skid groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, a prefabricated staircase comprises a prefabricated staircase body 1, a body reinforcing steel bar 121 and a reserved reinforcing steel bar 4, wherein the prefabricated staircase body 1 comprises a prefabricated staircase lower platform 101, a prefabricated staircase step plate 102 and a prefabricated staircase step 103, the prefabricated staircase step plate 102 is obliquely arranged, the prefabricated staircase lower platform 101 is connected to the lower end of the prefabricated staircase step plate 102, and the prefabricated staircase step 103 is connected to the upper side surface of the prefabricated staircase step plate 102; the prefabricated stair lower platform 101 is provided with a mounting hole 111;
the main body reinforcing bars 121 are disposed in the prefabricated staircase step plate 102, which are parallel to the width direction of the prefabricated staircase step plate 102; the reserved steel bar 4 is arranged in the prefabricated stair bench plate 102 and is parallel to the length direction of the prefabricated stair bench plate 102, and the main body steel bar 121, the reserved steel bar 4 and the prefabricated stair bench plate 102 are connected through steel fiber concrete 3 in a pouring mode.
Referring to fig. 3, in the prefabricated staircase of the present embodiment, a pin key 112 is disposed in a mounting hole 111, and the lower landing 101 of the prefabricated staircase is connected with the lower landing beam 2 through the pin key 112; the reserved steel bars 4 extend to the inner part of the upper ladder beam 5 and are connected with the upper ladder beam in a pouring mode. Namely, the lower end of the prefabricated stair body 1 is in sliding connection with the lower end ladder beam 2; the upper end of the prefabricated stair body 1 is fixedly connected with the upper end ladder beam 5, so that the connection part of the upper end fixed end of the prefabricated stair is fixed tightly, and the bracket at the platform is prevented from being exposed.
As shown in fig. 1 and 4, the reserved reinforcing bars 4 may include reserved top bars 401 and reserved bottom bars 402. The firmness of pouring connection between the upper end of the prefabricated stair bench plate 102 of the prefabricated stair body 1 and the upper end ladder beam 5 through the reserved steel bars 4 can be improved.
The reserved top rib 401 upper end can be horizontally bent towards the outside of the prefabricated stair bench plate 102 and extend out of the prefabricated stair bench plate 102, so that the firmness of pouring connection between the reserved top rib 401 and the upper end ladder beam 5 is guaranteed. The bending angle of the upper end of the reserved top rib 401 can be an obtuse angle, so that the upper end of the reserved top rib 401 can be conveniently and horizontally bent towards the outer part of the prefabricated stair tread plate 102.
The upper end of the reserved bottom rib 402 can extend to the outer side of the middle of the vertical section of the upper end ladder beam 5, so that the firmness of pouring connection between the upper end of the prefabricated stair bench plate 102 of the prefabricated stair body 1 and the upper end ladder beam 5 is guaranteed. I.e. the preformed reinforcement 4 in the prefabricated staircase block plate 102 extends into the upper landing girder 5 and over the Liang Zhongxian 501 of the upper landing girder 5. The upper end of the prefabricated stair tread plate 102 is directly connected with the upper end ladder beam 5 in a pouring mode through reserved steel bars 4.
The prefabricated stair steps 103 are stepped, the upper surfaces of the prefabricated stair steps are step surfaces with a horizontal plane structure, and the lower surfaces of the prefabricated stair steps are inclined planes and are connected with the prefabricated stair tread plates 102. The prefabricated staircase steps 103 may be a factory-machined one-shot structure.
As shown in fig. 1, the main body reinforcing bars 121 are provided in at least two layers, and are divided into an upper layer and a lower layer, and the main body reinforcing bars 121 of the upper layer and the lower layer are uniformly distributed in the prefabricated stair tread plate 102 respectively. The length direction of the body reinforcing bars 121 is perpendicular to the inclined length direction of the prefabricated staircase block plate 102.
As shown in fig. 2, a drip 6 may be disposed on the prefabricated stair step 103 adjacent to the shaft side, and the length direction of the drip 6 is parallel to the length direction of the prefabricated stair step plate 102, so that water on the prefabricated stair step 103 is discharged.
The prefabricated stair steps 103 are arranged in at least two, and are sequentially connected to the upper side surface of the prefabricated stair tread plate 102 from bottom to top.
As shown in fig. 2 and 4, the tread surface is provided with an anti-slip groove 7, and the length direction of the anti-slip groove 7 is perpendicular to the length direction of the prefabricated stair tread plate 102. The number of the anti-skid grooves 7 on each tread surface is two.
In the prefabricated staircase of the embodiment, the volume of the steel fiber added in the steel fiber concrete 3 is 1-1.5% of the volume of the concrete, the length of the steel fiber is 20-40mm, and the thickness is 0.5mm.
As shown in FIG. 1, the length of the reserved top rib 401 extending into the upper ladder beam 5 is equal to or greater than La, which is the anchoring length, i.e. the length of the reserved top rib 401 extending into the upper ladder beam 5 is greater than the anchoring length.
The length of the reserved bottom rib 402 extending into the upper ladder beam 5 is equal to or more than 5d, so that the reserved bottom rib 402 extends to at least the other side of the Liang Zhongxian 501 of the upper ladder beam 5.
The prefabricated staircase of this embodiment can be provided with felt layer 211 and cement mortar leveling layer 212 in proper order from bottom to top between the top surface of lower ladder beam 2 and the bottom surface of prefabricated staircase lower platform 101. The prefabricated stair lower platform 101, the asphalt felt layer 211, the cement mortar leveling layer 212 and the lower-end ladder beam 2 are provided with mounting holes 111, pin keys 112 are arranged in the mounting holes 111, and the prefabricated stair lower platform 101, the asphalt felt layer 211, the cement mortar leveling layer 212 and the lower-end ladder beam 2 are connected through the pin keys 112. A mortar blocking layer 113 is provided in the upper portion of the mounting hole 111. The upper end of the pin key 112 is arranged in the mortar plugging layer 113, and is sleeved with a gasket 114 and a nut 115. The lower end of the pin key 112 is positioned in the lower ladder beam 2 and sleeved with a cylindrical anchor head 116. A clearance cavity 117 is provided between the outer wall of the pin key 112 and the mounting hole 111. The pin key 112 coincides with the vertical central axis of the mounting hole 111.
A polyphenyl filling layer 213 and an glue injection layer 214 are sequentially arranged between the side surface of the lower end ladder beam 2 and the side surface of the prefabricated stair lower platform 101 from bottom to top. A PE (polyethylene) rod 215 is provided in the polystyrene filler layer 213.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (7)
1. The prefabricated staircase is characterized by comprising a prefabricated staircase main body, main body reinforcing steel bars and reserved reinforcing steel bars, wherein the prefabricated staircase main body comprises a prefabricated staircase lower platform, prefabricated staircase bench plates and prefabricated staircase steps, the prefabricated staircase bench plates are obliquely arranged, the prefabricated staircase lower platform is connected with the lower end of the prefabricated staircase bench plates, and the prefabricated staircase steps are connected with the upper side surfaces of the prefabricated staircase bench plates; the lower platform of the prefabricated stair is provided with a mounting hole;
the main body steel bars are arranged in the prefabricated stair bench plate and are parallel to the width direction of the prefabricated stair bench plate; the reserved steel bars are arranged in the prefabricated stair bench plate and are parallel to the length direction of the prefabricated stair bench plate, and the main body steel bars, the reserved steel bars and the prefabricated stair bench plate are connected through steel fiber concrete pouring;
the reserved reinforcing steel bars comprise reserved top ribs and reserved bottom ribs, and the upper ends of the reserved top ribs are horizontally bent towards the outer part of the prefabricated stair tread and extend out of the prefabricated stair tread; the bending angle of the upper end of the reserved top rib is an obtuse angle; the reserved steel bars extend to the inner part of the upper ladder beam and are connected with the upper ladder beam in a pouring mode; a pin key is arranged in the mounting hole, and the lower platform of the prefabricated staircase is connected with the lower end ladder beam through the pin key; the lower ends of the pin keys are positioned in the lower ladder beams, and are sleeved with cylindrical anchor heads; a clearance cavity is formed between the outer wall of the pin key and the mounting hole;
a drip groove is arranged on one side of the prefabricated stair step adjacent to the ladder well.
2. The prefabricated staircase of claim 1, wherein the reserved bottom bar upper end extends outside the middle of the vertical section of the upper ladder beam.
3. A prefabricated staircase according to claim 1 or 2, characterised in that the length direction of the drip groove is parallel to the length direction of the prefabricated staircase section plate.
4. A prefabricated staircase according to claim 1 or 2, characterised in that the prefabricated staircase steps in a step-like manner, the upper surface of which is a tread surface of a horizontal configuration.
5. The prefabricated staircase of claim 4, wherein the tread surface is provided with anti-slip grooves, the length direction of the anti-slip grooves being perpendicular to the length direction of the prefabricated staircase step plate.
6. The prefabricated staircase according to claim 1, characterized in that the number of prefabricated staircase steps is at least two and is connected in sequence from bottom to top on the upper side surface of the prefabricated staircase step plate.
7. The prefabricated staircase according to claim 1, wherein said body bars are provided in at least two and divided into upper and lower layers, said body bars of both upper and lower layers being uniformly distributed in said prefabricated staircase step plate, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197196.2U CN219528205U (en) | 2023-02-13 | 2023-02-13 | Prefabricated stairway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320197196.2U CN219528205U (en) | 2023-02-13 | 2023-02-13 | Prefabricated stairway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219528205U true CN219528205U (en) | 2023-08-15 |
Family
ID=87645885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320197196.2U Active CN219528205U (en) | 2023-02-13 | 2023-02-13 | Prefabricated stairway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219528205U (en) |
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2023
- 2023-02-13 CN CN202320197196.2U patent/CN219528205U/en active Active
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