CN110258985B - Upright post-free steel frame rotary stair - Google Patents
Upright post-free steel frame rotary stair Download PDFInfo
- Publication number
- CN110258985B CN110258985B CN201910607449.7A CN201910607449A CN110258985B CN 110258985 B CN110258985 B CN 110258985B CN 201910607449 A CN201910607449 A CN 201910607449A CN 110258985 B CN110258985 B CN 110258985B
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- steel
- butt joint
- upper layer
- welded
- joint plane
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 208
- 239000010959 steel Substances 0.000 title claims abstract description 208
- 210000001503 joint Anatomy 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 description 20
- 230000007704 transition Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention discloses a column-free steel frame rotary stair which comprises steel plates, wherein a plurality of through holes are arrayed in the steel plates, bolts penetrate through the through holes, and the steel plates are respectively assembled and connected with an upper floor plate and a lower floor plate; the upper layer steel platform is welded and fixed with a steel plate fixed on the upper layer floor slab; the steel steps comprise an upper section steel step with the top welded with the upper layer steel platform, and a lower section steel step with the bottom welded with a steel plate connected with the lower layer floor, wherein the upper section steel step and the lower section steel step are provided with a plurality of steps; the middle conversion steel platform is horizontally arranged and connected with the bottom of the upper section steel step and the top of the lower section steel step; the upper layer steel platform is provided with an upper layer butt joint plane welded with the steel plate, the upper layer steel platform is further provided with a step butt joint plane welded with the upper section steel step, and the horizontal width of the upper layer butt joint plane is greater than that of the step butt joint plane. The invention has no middle upright post, reduces occupied space, has high structural strength of the stair and is fastened with the connection mode of the floor slab.
Description
Technical Field
The invention relates to the field of building structures, in particular to a column-free steel frame rotary stair.
Background
At present, in the field of building installation construction, the combination of main stairway and support column for steel frame stairway installation construction generally has the problems that the visual effect is not attractive, the space occupation is large, the steel consumption is large and the like, so that the stairway cannot be ideally installed, the horizontal height is different, the seam line is uneven, the appearance is seriously influenced, the deviation is large, the stairway can be installed after being adjusted by other accessories, the construction cost is increased, and a large amount of labor material cost is wasted.
Disclosure of Invention
The invention aims to solve the problem of providing the upright post-free steel frame rotary stair without an intermediate upright post, which reduces occupied space, has high structural strength and is fastened with a floor slab in a connection mode.
In order to solve the problems, the invention provides a column-free steel frame rotary stair, and the technical scheme adopted for solving the technical problems is as follows:
a stud-less steel frame rotating stairway comprising: the steel plates are provided with a plurality of through holes in an array, bolts penetrate through the through holes, and the plurality of steel plates are respectively assembled and connected with the upper floor plate and the lower floor plate; the upper layer steel platform is welded and fixed with a steel plate fixed on the upper layer floor slab; the steel steps comprise an upper section steel step with the top welded with the upper layer steel platform, and a lower section steel step with the bottom welded with a steel plate connected with the lower layer floor, wherein the upper section steel step and the lower section steel step are provided with a plurality of steps; the middle conversion steel platform is horizontally arranged and connected with the bottom of the upper section steel step and the top of the lower section steel step; the upper layer steel platform is provided with an upper layer butt joint plane welded with the steel plate, the upper layer steel platform is further provided with a step butt joint plane welded with the upper section steel step, and the horizontal width of the upper layer butt joint plane is greater than that of the step butt joint plane.
The beneficial effects of adopting above-mentioned technical scheme are: the upper steel platform, the upper section steel step, the middle conversion steel platform and the lower section steel step are welded in sequence to form a complete steel structure, the structural strength of the steel frame stair is stronger than that of a stair with a concrete or steel-concrete structure, and the steel frame stair can bear larger span, so that an upright post for supporting the lower part of the middle platform can be omitted. Meanwhile, as the stress at the head and tail ends of the steel frame stair is larger, the fixation at the head and tail ends is ensured by the steel plates with bolts. Because the head and tail ends of the steel frame stair are connected with the concrete floors in different layers, different materials cannot be welded, and the steel plates with a plurality of through holes in an array provide firm connection force. The butt joint plane of marking time has guaranteed to have sufficient welding butt joint area, guarantees the fastness of connection, because the atress at stair top is great relatively, and the fastness of connection has been guaranteed to the bigger area of upper strata butt joint plane, improves the local structural strength of the weaker department relatively, promotes the whole firmness of steelframe stair.
As a further improvement of the invention, the upper layer butt joint plane and the stepping butt joint plane are arranged at an included angle, are not adjacent, and are connected through two concave curved surfaces.
The beneficial effects of adopting above-mentioned technical scheme are: the included angle arrangement can adapt to the arc modeling of the stairs, and meanwhile, the concave curved surface connection can control the total area and the total mass of the upper steel platform, and no stress concentration position exists.
As a further improvement of the invention, the upper layer butt joint plane is a side elevation of the upper layer steel platform, the upper layer butt joint plane is welded with the side elevation of the steel plate on the upper layer floor slab, and the bottom plane of the lower section steel step is a horizontal plane and is welded with the upper surface of the steel plate on the lower layer floor slab.
The beneficial effects of adopting above-mentioned technical scheme are: the steel plate of the upper floor slab is horizontally abutted with the upper steel platform, so that the horizontal transition between the top of the stair and the upper floor slab is ensured. The upper surface of the lower layer steel plate is provided with enough contact welding area with the lower section steel step, and meanwhile, the lower layer steel plate mainly bears the downward pressure.
As a still further improvement of the invention, the steel plates connected to the lower steel steps are located in the vertical projection of the lower steel steps.
The beneficial effects of adopting above-mentioned technical scheme are: the vertical projection is arranged, the lower root of the lower layer steel plate on the lower section steel step is ensured, the vertical projection is arranged in a visual field blind area, and the integral appearance effect is ensured.
As a further improvement of the invention, the middle conversion steel platform is in an isosceles trapezoid shape along the horizontal section outline, and the waist of the isosceles trapezoid corresponds to an upper butt joint plane welded with the upper section steel step and a lower butt joint plane welded with the lower section steel step on the middle conversion steel platform respectively.
The beneficial effects of adopting above-mentioned technical scheme are: the middle conversion steel platform and the upper and lower steps are provided with welding surfaces, so that the connection is firm, and meanwhile, the middle conversion steel platform can adapt to the integral arc modeling of the stair.
As a still further improvement of the present invention, the through holes penetrate through the upper and lower surfaces of the steel plate, and the through holes are rectangular in array on the steel plate.
The beneficial effects of adopting above-mentioned technical scheme are: the layout of the through holes is convenient for processing and manufacturing.
As a further improvement of the invention, the bolt is provided with a nut, and a gasket is contacted between the nut and the upper surface of the steel plate.
The beneficial effects of adopting above-mentioned technical scheme are: the gasket can increase the connection tightness and reduce the pressure.
As a further improvement of the invention, the steel plates are square with side length of 600mm along the horizontal section outline, each steel plate is provided with 25 through holes, and the thickness of the steel plate is 12mm.
The beneficial effects of adopting above-mentioned technical scheme are: the selection of each size and the number of the through holes meets the requirement of stress at a low cost.
As a further improvement of the invention, the bolt is a chemical bolt with a nominal diameter of 20mm, and the thickness of the gasket is 3mm.
The beneficial effects of adopting above-mentioned technical scheme are: the chemical bolts have strong connection firmness, and the size selection of the bolts and the gaskets can meet the requirement of stress.
As a further improvement of the invention, the upper section steel step, the middle conversion steel platform and the lower section steel step are connected and then connected by the central line to form an arc line.
The beneficial effects of adopting above-mentioned technical scheme are: the stair finally forms a curve trend, the shape is graceful, the stress is symmetrical, and the transition among the parts is smooth.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of one embodiment of the present invention;
FIG. 2 is a schematic view of a steel sheet according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of an embodiment of the present invention.
1-an upper steel platform; 1 a-upper layer butt joint plane; 1 b-step docking plane; 1 c-a concave curved surface; 2-upper section steel steps; 3-an intermediate conversion steel platform; 3 a-upper docking plane; 3 b-lower docking plane; 4-lower section steel steps; 4 a-a bottom plane; 5-a steel plate; 5 a-a through hole; 6-a bolt; 7-a gasket; 8-nut.
Detailed Description
The following describes the present invention in further detail with reference to specific examples:
in order to achieve the purpose of the invention, the upright post-free steel frame rotary stair comprises: the steel plates 5 are provided with a plurality of through holes 5a in array, bolts 6 penetrate through the through holes 5a, and the plurality of steel plates 5 are respectively assembled and connected with the upper floor slab and the lower floor slab; the upper layer steel platform 1 is welded and fixed with a steel plate 5 fixed on an upper layer floor slab; the steel steps comprise an upper section steel step 2 with the top welded with the upper layer steel platform 1, and a lower section steel step 4 with the bottom welded with a steel plate 5 connected with a lower layer floor, wherein the upper section steel step 2 and the lower section steel step 4 are provided with a plurality of steps; the middle conversion steel platform 3 is horizontally arranged and is connected with the bottom of the upper section steel step 2 and the top of the lower section steel step 4; the upper steel platform 1 is provided with an upper butt joint plane 1a welded with a steel plate 5, the upper steel platform 1 is further provided with a step butt joint plane 1b welded with an upper steel step 2, and the horizontal width of the upper butt joint plane 1a is greater than that of the step butt joint plane 1 b.
The beneficial effects of adopting above-mentioned technical scheme are: the upper steel platform, the upper section steel step, the middle conversion steel platform and the lower section steel step are welded in sequence to form a complete steel structure, the structural strength of the steel frame stair is stronger than that of a stair with a concrete or steel-concrete structure, and the steel frame stair can bear larger span, so that an upright post for supporting the lower part of the middle platform can be omitted. Meanwhile, as the stress at the head and tail ends of the steel frame stair is larger, the fixation at the head and tail ends is ensured by the steel plates with bolts. Because the head and tail ends of the steel frame stair are connected with the concrete floors in different layers, different materials cannot be welded, and the steel plates with a plurality of through holes in an array provide firm connection force. The stepping butt joint plane ensures enough welding butt joint area and connection firmness, because the stress on the top of the stair is relatively large, the larger area of the upper butt joint plane ensures the firmness of connection, improves the local structural strength of the relatively weaker part and improves the overall firmness of the steel frame stair.
In other embodiments of the present invention, the upper abutment plane 1a and the tread abutment plane 1b are disposed at an angle, and the upper abutment plane 1a and the tread abutment plane 1b are not adjacent to each other and are connected by two concave curved surfaces 1 c.
The beneficial effects of adopting above-mentioned technical scheme are: the included angle arrangement can adapt to the arc modeling of the stairs, and meanwhile, the concave curved surface connection can control the total area and the total mass of the upper steel platform, and no stress concentration position exists.
In other embodiments of the present invention, the upper butt-joint plane 1a is a side elevation of the upper steel platform 1, the upper butt-joint plane 1a is welded with a side elevation of the upper steel plate 5 of the upper floor slab, and the bottom plane 4a of the lower steel step 4 is a horizontal plane and is welded with the upper surface of the upper steel plate 5 of the lower floor slab.
The beneficial effects of adopting above-mentioned technical scheme are: the steel plate of the upper floor slab is horizontally abutted with the upper steel platform, so that the horizontal transition between the top of the stair and the upper floor slab is ensured. The upper surface of the lower layer steel plate is provided with enough contact welding area with the lower section steel step, and meanwhile, the lower layer steel plate mainly bears the downward pressure.
In other embodiments of the present invention, the steel plate 5 to which the lower steel step 4 is connected is located within the vertical projection of the lower steel step 4.
As shown in fig. 3, the upper butt plane 1a is welded to a plurality of steel plates 5, and the bottom plane 4a is welded to one steel plate 5.
The beneficial effects of adopting above-mentioned technical scheme are: the vertical projection is arranged, the lower root of the lower layer steel plate on the lower section steel step is ensured, the vertical projection is arranged in a visual field blind area, and the integral appearance effect is ensured.
In other embodiments of the present invention, the middle conversion steel platform 3 has an isosceles trapezoid shape along the horizontal cross-section profile, and the waist of the isosceles trapezoid corresponds to the upper butt plane 3a welded with the upper section steel step 2 and the lower butt plane 3b welded with the lower section steel step 4 on the middle conversion steel platform 3 respectively.
The beneficial effects of adopting above-mentioned technical scheme are: the middle conversion steel platform and the upper and lower steps are provided with welding surfaces, so that the connection is firm, and meanwhile, the middle conversion steel platform can adapt to the integral arc modeling of the stair.
In other embodiments of the present invention, the through holes 5a penetrate through the upper and lower surfaces of the steel plate 5, and the through holes 5a are rectangular in array on the steel plate 5.
The beneficial effects of adopting above-mentioned technical scheme are: the layout of the through holes is convenient for processing and manufacturing.
In other embodiments of the present invention, as shown in fig. 2, a nut 8 is mounted on the bolt 6, and a washer 7 is in contact between the nut 8 and the upper surface of the steel plate 5.
In fig. 3, the through hole 5a, the bolt 6, the washer 7, and the nut 8 are hidden. Fig. 3 shows a fixed layout of the steel plate 5 compared to fig. 1.
The beneficial effects of adopting above-mentioned technical scheme are: the gasket can increase the connection tightness and reduce the pressure.
In other embodiments of the present invention, the steel plates 5 have a square shape with a side length of 600mm along the horizontal cross-sectional profile, each steel plate 5 has 25 through holes 5a, and the thickness of the steel plate 5 is 12mm.
The beneficial effects of adopting above-mentioned technical scheme are: the selection of each size and the number of the through holes meets the requirement of stress at a low cost.
In other embodiments of the invention, the bolts 6 are chemical bolts of nominal diameter 20mm and the shims 7 are 3mm thick.
The beneficial effects of adopting above-mentioned technical scheme are: the chemical bolts have strong connection firmness, and the size selection of the bolts and the gaskets can meet the requirement of stress.
In other embodiments of the present invention, the upper section steel step 2, the middle transition steel platform 3 and the lower section steel step 4 are connected to form an arc line by connecting the central lines of the upper section steel step 2, the middle transition steel platform and the lower section steel step 4.
The beneficial effects of adopting above-mentioned technical scheme are: the stair finally forms a curve trend, the shape is graceful, the stress is symmetrical, and the transition among the parts is smooth.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A column-free steel frame rotary stairway, comprising:
the steel plates are provided with a plurality of through holes in an array, bolts penetrate through the through holes, and the plurality of steel plates are respectively assembled and connected with the upper floor plate and the lower floor plate;
the upper layer steel platform is welded and fixed with a steel plate fixed on the upper layer floor slab;
the steel steps comprise an upper section steel step with the top welded with the upper layer steel platform and a lower section steel step with the bottom welded with a steel plate connected with the lower layer floor slab, wherein the upper section steel step and the lower section steel step are provided with a plurality of steps;
the middle conversion steel platform is horizontally arranged and connected with the bottom of the upper section steel step and the top of the lower section steel step;
the upper layer steel platform is provided with an upper layer butt joint plane welded with the steel plate, the upper layer steel platform is further provided with a step butt joint plane welded with the upper section steel step, and the horizontal width of the upper layer butt joint plane is greater than that of the step butt joint plane.
2. The upright-free steel frame rotary stairway according to claim 1, wherein: the upper layer butt joint plane is arranged at an included angle with the stepping butt joint plane, and the upper layer butt joint plane is not adjacent to the stepping butt joint plane and is connected through two concave curved surfaces.
3. A stud-less steel frame rotating stairway according to claim 2, characterised in that: the upper layer butt joint plane is a side elevation of an upper layer steel platform, the upper layer butt joint plane is welded with the side elevation of an upper steel plate of an upper layer floor slab, and the bottom plane of the lower section steel step is a horizontal plane and is welded with the upper surface of the upper steel plate of the lower layer floor slab.
4. A stud-less steel frame rotating stairway according to claim 3, characterised in that: the steel plate that the hypomere steel is stepped and is connected is located the vertical projection that hypomere steel stepped.
5. The upright-free steel frame rotary stairway according to claim 1, wherein: the middle conversion steel platform is isosceles trapezoid along the horizontal section outline, and the waist of the isosceles trapezoid corresponds to an upper butt joint plane welded with an upper section steel step and a lower butt joint plane welded with a lower section steel step on the middle conversion steel platform respectively.
6. The upright-free steel frame rotary stairway according to claim 1, wherein: the through holes penetrate through the upper surface and the lower surface of the steel plate, and the through holes are in a rectangular array on the steel plate.
7. The upright-free steel frame rotary stairway according to claim 1, wherein: the bolt is provided with a nut, and a gasket is contacted between the nut and the upper surface of the steel plate.
8. The upright-free steel frame rotary stairway according to claim 6, wherein: the steel plates are square with side length of 600mm along the horizontal section outline, 25 through holes are formed in each steel plate, and the thickness of each steel plate is 12mm.
9. The upright-free steel frame rotary stairway according to claim 7, wherein: the bolts are chemical bolts with nominal diameters of 20mm, and the thickness of the gasket is 3mm.
10. The upright-free steel frame rotary stairway according to claim 1, wherein: the upper section steel steps, the middle conversion steel platform and the lower section steel steps are connected and then connected by the central line to form an arc line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607449.7A CN110258985B (en) | 2019-07-05 | 2019-07-05 | Upright post-free steel frame rotary stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910607449.7A CN110258985B (en) | 2019-07-05 | 2019-07-05 | Upright post-free steel frame rotary stair |
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| Publication Number | Publication Date |
|---|---|
| CN110258985A CN110258985A (en) | 2019-09-20 |
| CN110258985B true CN110258985B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910607449.7A Active CN110258985B (en) | 2019-07-05 | 2019-07-05 | Upright post-free steel frame rotary stair |
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| CN (1) | CN110258985B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203213440U (en) * | 2013-04-12 | 2013-09-25 | 上海建工一建集团有限公司 | Multivariate-curve spiral escalator |
| CN103603468A (en) * | 2013-11-06 | 2014-02-26 | 苏州金螳螂建筑装饰股份有限公司 | Non-support steel-structure spiral staircase |
| CN104499665A (en) * | 2014-12-24 | 2015-04-08 | 北京凯盛建材工程有限公司 | Through type spiral stair and arranging method thereof |
| CN210395911U (en) * | 2019-07-05 | 2020-04-24 | 苏州金螳螂建筑装饰股份有限公司 | Rotary stair without upright post and steel frame |
-
2019
- 2019-07-05 CN CN201910607449.7A patent/CN110258985B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203213440U (en) * | 2013-04-12 | 2013-09-25 | 上海建工一建集团有限公司 | Multivariate-curve spiral escalator |
| CN103603468A (en) * | 2013-11-06 | 2014-02-26 | 苏州金螳螂建筑装饰股份有限公司 | Non-support steel-structure spiral staircase |
| CN104499665A (en) * | 2014-12-24 | 2015-04-08 | 北京凯盛建材工程有限公司 | Through type spiral stair and arranging method thereof |
| CN210395911U (en) * | 2019-07-05 | 2020-04-24 | 苏州金螳螂建筑装饰股份有限公司 | Rotary stair without upright post and steel frame |
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| Publication number | Publication date |
|---|---|
| CN110258985A (en) | 2019-09-20 |
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