Column-free steel structure integrated spiral stair design structure

Abstract

The utility model discloses an integrated spiral staircase design structure of a column-free steel structure. The integrated spiral staircase design structure comprises an outer side bearing beam; an inner spandrel girder; one end of the step is fixedly installed on the inner side face of the outer side bearing beam, the other opposite end of the step is fixedly installed on the outer side face of the inner side bearing beam, the step is of a fan-shaped structure and comprises an upper cover plate and a lower seat body, a first threaded hole is formed in the arc-shaped end face of the lower seat body, and a second threaded hole is formed in the arc-shaped end face of the lower seat body. First through holes corresponding to the first threaded holes in position are formed in the inner spiral curved plate of the outer side bearing beam, the first bolt connecting pieces are connected into the first threaded holes in a threaded mode, and the ends of the first bolt connecting pieces extend into the first through holes. Compared with the prior art, the column-free spiral spiral stair solves the problems that a beam body and a pedal of the column-free spiral spiral stair are prone to deformation and damage, and construction is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of spiral staircases, and in particular relates to a column-free steel structure integrated spiral staircase design structure. Background Art

[0002] Spiral staircases are mainly in the form of reinforced concrete and steel structures. Reinforced concrete spiral staircases are gradually being replaced by steel spiral staircases due to a series of disadvantages such as high construction cost, long production cycle, poor stability and poor seismic performance.

[0003] Spiral steel structure spiral staircases are mainly divided into two forms:

[0004] The first is the "L"-shaped cantilever spiral staircase, which mainly uses the central steel column of the staircase to support the overall structure and step load. Therefore, the overall structural load and step load have a great effect on the eccentric load of the central steel column, making the stability and safety of the spiral staircase difficult to control;

[0005] The second is a column-free spiral steel structure staircase, which is mostly composed of rotating box beams on both sides, rotating steel stair side beams, fan-shaped treads and vertical plates. The box beams and side beams are rotated and tilted in the same direction, and then the fan-shaped treads, vertical plates, side beams and box beams are assembled and fixed on site.

[0006] For column-free spiral staircases, the beam itself is prone to bending deformation. At the same time, when the width of the stairs is too large and is subjected to repeated dynamic loads for a long time, fatigue damage to the steel of the treads is very likely to occur, which in turn causes quality problems such as deformation and dents of the stair treads. Utility Model Content

[0007] The utility model aims to provide a column-free steel structure integrated spiral staircase design structure to solve the problems of easy deformation and damage of the beam body and pedals of the column-free spiral staircase and the inconvenience of construction.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solution: a column-free steel structure integrated spiral staircase design structure, comprising:

[0009] The outer load-bearing beam is a spiral-shaped tubular structure;

[0010] The inner load-bearing beam is a spiral-shaped tubular structure;

[0011] A step, one end of which is fixedly mounted on the inner side surface of the outer load-bearing beam, and the other end of which is fixedly mounted on the outer side surface of the inner load-bearing beam. The step is in a fan-shaped structure, and includes an upper cover plate and a lower seat body. A first threaded hole is provided on the arc-shaped end surface of the lower seat body, and a first through hole corresponding to the first threaded hole is provided on the inner spiral curved plate of the outer load-bearing beam. A first bolt connector is threadedly connected in the first threaded hole, and an end of the first bolt connector extends into the first through hole.

[0012] As a further description of the above technical solution:

[0013] A support plate is arranged on the bottom surface of the inner cavity of the lower seat body, and the support plate is arranged along the length direction of the step.

[0014] As a further description of the above technical solution:

[0015] The height of the support plate is smaller than the thickness of the lower seat body.

[0016] As a further description of the above technical solution:

[0017] An arc-shaped rib is arranged on an opposite side of the upper cover plate.

[0018] As a further description of the above technical solution:

[0019] The arc-shaped retaining edge is provided with a notch corresponding to the position of the support plate.

[0020] As a further description of the above technical solution:

[0021] The surface of the upper cover plate is also provided with through holes.

[0022] As a further description of the above technical solution:

[0023] A plurality of connectors are arranged on the surface of the outer load-bearing beam, and the connectors are in a cylindrical structure.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0025] 1. In the present invention, the outer load-bearing beam and the inner load-bearing beam are welded by a plurality of spiral curved panels, which effectively improves the anti-deformation capability of the outer load-bearing beam and the inner load-bearing beam under the premise of effectively controlling their own weight. The step and the outer load-bearing beam 1 are detachably installed, which is convenient for adjustment and replacement.

[0026] 2. In the present invention, a support plate is provided on the bottom surface of the inner cavity of the lower seat body, and the support plate is arranged along the length direction of the step. The support plate is placed horizontally in the middle of the step and evenly arranged, which plays a role in preventing the step from deforming and further strengthening the stability of the step structure, avoiding the problem of bulging and falling off of the later finishing due to the deformation of the step. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a structural schematic diagram of a column-free steel structure integrated spiral staircase design structure.

[0029] Figure 2 Design of a column-free steel structure integrated spiral staircase with steps Figure 1 .

[0030] Figure 3 Design of a column-free steel structure integrated spiral staircase with steps Figure 2 .

[0031] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Outer load-bearing beam; 11. Connector; 2. Inner load-bearing beam; 3. Step; 31. Upper cover plate; 311. Arc-shaped rib; 3111. Notch; 312. Through hole; 32. Lower seat; 321. First threaded hole; 322. Support plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] See also Figure 1-4 The utility model provides a technical solution: a column-free steel structure integrated spiral staircase design structure, including:

[0036] The outer load-bearing beam 1 is a spiral tubular structure;

[0037] The inner load-bearing beam 2 is a spiral tubular structure;

[0038] The step 3 has one end fixedly mounted on the inner side surface of the outer load-bearing beam 1 and the other end fixedly mounted on the outer side surface of the inner load-bearing beam 2. The step 3 has a fan-shaped structure. The step 3 includes an upper cover plate 31 and a lower seat body 32. A first threaded hole 321 is provided on the arc-shaped end surface of the lower seat body 32. A first through hole corresponding to the first threaded hole 321 is provided on the inner spiral curved panel of the outer load-bearing beam 1. The first bolt connector is threadedly connected in the first threaded hole 321, and the end of the first bolt connector extends into the first through hole.

[0039] The outer load-bearing beam 1 and the inner load-bearing beam 2 are both formed by welding a plurality of spiral curved panels, which effectively improve the anti-deformation capability of the outer load-bearing beam 1 and the inner load-bearing beam 2 under the premise of effectively controlling the weight of the outer load-bearing beam 1 and the inner load-bearing beam 2. The step 3 and the outer load-bearing beam 1 are detachably installed, which is convenient for adjustment and replacement.

[0040] A support plate 322 is provided on the bottom surface of the inner cavity of the lower seat body 32, and the support plate 322 is arranged along the length direction of the step 3. The support plate 322 is placed horizontally in the middle of the step 3 and arranged evenly, which plays a role in preventing the step from deforming and further strengthening the stability of the step structure, avoiding the problem of bulging and falling off caused by the deformation of the step in the later stage.

[0041] The height of the support plate 322 is less than the thickness of the lower seat body 32. The support plate 322 does not exceed the lower seat body 32, and the top of the support plate 322 abuts against the lower surface of the upper cover plate 31, effectively supporting the upper cover plate 31.

[0042] An arcuate rib 311 is disposed on one opposite side of the upper cover plate 31. The arcuate rib 311 extends into the inner cavity of the lower seat body 32 and abuts against the inner wall of the arcuate end surface of the lower seat body 32, while not blocking the first threaded hole 321. The arcuate rib 311 can facilitate the installation of the upper cover plate 31 and the lower seat body 32. The upper cover plate 31 can be fixed by bolting or the like after being plugged into the lower seat body 32 through the arcuate rib 311.

[0043] The arc-shaped retaining edge 311 is provided with a notch 3111 corresponding to the position of the support plate 322 to further position the support plate 322 and prevent the step from being deformed.

[0044] The surface of the upper cover plate 31 is also provided with through holes 312 , which facilitate the plugging and fixing of the surface layer material and the upper cover plate 31 , and facilitate the installation of the surface layer material on the step.

[0045] The outer side load-bearing beam 1 is provided with a plurality of connectors 11, which are cylindrical in structure. The arrangement of the connectors 11 can facilitate the installation of guardrails on the outer side load-bearing beam 1 in the later stage, thereby improving the safety of the spiral staircase.

[0046] Working principle: The spiral staircase includes an outer load-bearing beam 1, an inner load-bearing beam 2 and steps 3. A number of fan-shaped steps 3 arranged spirally upward are arranged between the outer load-bearing beam 1 and the inner load-bearing beam 2. The outer load-bearing beam 1 is formed by welding four spiral curved panels, and the inner load-bearing beam 2 is the same. The two ends of the step 3 are respectively fixed to the outer load-bearing beam 1 and the inner load-bearing beam 2. Taking the fixation of the step 3 to the outer load-bearing beam 1 as an example, one end of the lower seat 32 of the step 3 is fixed to the outer load-bearing beam 1 through a first bolt connector. The first bolt connector is threadedly connected to the first threaded hole 321 on the arc-shaped end face of the lower seat 32, and its end extends into the first through hole. The installation of the step 3 and the inner load-bearing beam 2 is the same.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A column-free steel structure integrated spiral staircase design structure, characterized in that: include: The outer load-bearing beam is a spiral-shaped tubular structure; The inner load-bearing beam is a spiral-shaped tubular structure; A step, one end of which is fixedly mounted on the inner side surface of the outer load-bearing beam, and the other end of which is fixedly mounted on the outer side surface of the inner load-bearing beam. The step is in a fan-shaped structure, and includes an upper cover plate and a lower seat body. A first threaded hole is provided on the arc-shaped end surface of the lower seat body, and a first through hole corresponding to the first threaded hole is provided on the inner spiral curved plate of the outer load-bearing beam. A first bolt connector is threadedly connected in the first threaded hole, and an end of the first bolt connector extends into the first through hole.

2. The column-free steel structure integrated spiral staircase design structure according to claim 1 is characterized in that: A support plate is provided on the bottom surface of the inner cavity of the lower seat body, and the support plate is arranged along the length direction of the step.

3. The column-free steel structure integrated spiral staircase design structure according to claim 2 is characterized in that: The height of the support plate is smaller than the thickness of the lower seat body.

4. The column-free steel structure integrated spiral staircase design structure according to claim 3 is characterized in that: An arc-shaped rib is arranged on an opposite side of the upper cover plate.

5. The column-free steel structure integrated spiral staircase design structure according to claim 4 is characterized in that: The arc-shaped retaining edge is provided with a notch corresponding to the position of the support plate.

6. The column-free steel structure integrated spiral staircase design structure according to claim 1 is characterized in that: The surface of the upper cover plate is also provided with through holes.

7. The column-free steel structure integrated spiral staircase design structure according to claim 1 is characterized in that: The surface of the outer load-bearing beam is provided with a plurality of connectors, and the connectors are in a cylindrical structure.

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