A fully suspended multi-curved special-shaped twisted steel structure staircase

Abstract

The present invention relates to a fully suspended multi-curved special-shaped twisted steel structure staircase, the special-shaped twisted steel structure staircase, the steel structure staircase includes an outer beam, a middle beam, and an inner beam; the outer beam and the inner beam are both suspended from the bottom surface of the concrete structure beam through an arc-shaped path until they are fixed on the transverse beam of the concrete structure beam; a staircase surface is arranged between the outer beam and the inner beam; the staircase surface is composed of a step steel plate, and the staircase surface is assembled into an H-shaped steel shape with the outer beam and the inner beam by bending the steel plate. Its advantages are as follows: by setting the outer beam, the middle beam and the inner beam, the staircase surface has fixed points on the outside, the inside and the middle, so that the entire staircase surface and the three beams form a whole, so as to achieve overall force bearing, and at the same time, the entire steel structure staircase is designed into an H-shaped steel shape, the steel material does not deform, does not affect the stress structure of the profile, and can meet the overall force bearing of the fully suspended large-arc staircase.

Description

Technical Field

[0001] The invention relates to the technical field of building stairs, in particular to a fully suspended multi-curved special-shaped twisted steel structure staircase. Background Art

[0002] With the widespread application of steel structures in China, architectural design has put forward higher requirements for the production and construction of steel structures, especially high-end office buildings, public exhibition centers, leisure and entertainment centers, etc., where spiral staircases are often encountered. Among them, steel spiral staircases are light in structure, streamlined, and can better express a light and lively atmosphere, and are favored by the majority of users. However, the existing technology of steel structure stairs has the following defects and shortcomings:

[0003] Firstly, the H-steel in the steel structure stairs in the prior art is bent and twisted horizontally according to the traditional process, which will cause the upper and lower bottom steels to bend upward and downward, resulting in the deformation of the H-steel and unable to meet the use and force requirements.

[0004] Secondly, in the steel structure staircases in the prior art, thickened steel plates are usually used as steps. Since the step length of the staircase is relatively large, the traditional use of thickened steel plates as steps will increase the self-weight of the staircase, thereby increasing the load on the staircase.

[0005] In addition, the existing steel structure staircases cannot meet the overall stress requirements of fully suspended large-arc stairs due to limited stress conditions.

[0006] Chinese patent document CN201410455768.8, application date 20140909, patent name: Construction method of super-high and large curvature circular spiral plain concrete staircase, discloses a construction method of super-high and large curvature circular spiral plain concrete staircase, including: forming a plain concrete circular wall; setting up a spiral staircase step formwork on the inner side of the circular wall; setting up a spiral staircase handrail formwork; pouring plain concrete in the spiral staircase step formwork and the spiral staircase handrail formwork to form a spiral staircase step and a spiral staircase handrail.

[0007] The construction method of the ultra-high large curvature circular spiral plain concrete staircase in the above patent document adopts the method of first forming a plain concrete circular wall as the attachment foundation of the spiral staircase steps, which reduces the difficulty of supporting the template of the spiral staircase steps. However, there is no corresponding disclosure of a technical solution that can meet the stress requirements of full suspension, is not easy to deform, and has good overall stress resistance.

[0008] In summary, there is an urgent need for a fully suspended multi-curved special-shaped twisted steel structure staircase that can meet the full-suspended force requirements, is not easily deformed, and has good overall force. However, there is no report on such a fully suspended multi-curved special-shaped twisted steel structure staircase. Summary of the invention

[0009] The purpose of the present invention is to address the deficiencies in the prior art and provide a fully suspended multi-curved special-shaped twisted steel structure staircase that can meet the stress requirements of full suspension, is not easy to deform, and has good overall stress resistance.

[0010] To achieve the above object, the technical solution adopted by the present invention is:

[0011] A fully suspended multi-curved special-shaped twisted steel structure staircase, the special-shaped twisted steel structure staircase, the steel structure staircase comprises an outer beam, an intermediate beam, an inner beam, and a concrete structure beam; the concrete structure beam comprises a first vertical beam, a second vertical beam and a transverse beam; the first vertical beam and the second vertical beam are distributed in parallel; a transverse beam is arranged on the second vertical beam; one end of the outer beam and the inner beam are both fixedly supported on the transverse beam of the concrete structure beam, and the other end is fixed on the bottom surface of the concrete structure beam; the outer beam and the inner beam are both extended from the bottom surface of the concrete structure beam through an arc-shaped suspended path until they are fixed on the transverse beam of the concrete structure beam; the intermediate beam is between the outer beam and the inner beam; a stair surface is arranged between the outer beam and the inner beam; the stair surface is composed of step steel plates, and the step steel plates are spliced ​​by special-shaped stretching and bending; the stair surface is assembled into an H-shaped steel shape with the outer beam and the inner beam by bending the steel plates.

[0012] As a preferred technical solution, the stair surface as a whole has a special-shaped curved structure.

[0013] As a preferred technical solution, the width of the step steel plate on the outside is greater than the width on the inside.

[0014] As a preferred technical solution, the curvature radius of the outer beam is greater than the curvature radius of the inner beam.

[0015] As a preferred technical solution, the inner beam is composed of an arc segment and a straight segment; and the outer beam is composed of an arc segment as a whole.

[0016] As a preferred technical solution, the two ends of the step steel plate are fixedly welded to the outer beam and the inner beam; the inner middle of the step steel plate is fixedly welded to the middle beam.

[0017] As a preferred technical solution, the middle beam includes an upper beam, a middle beam and a lower beam; a first transverse reinforcement beam is arranged at the connection between the upper beam and the middle beam; a second transverse reinforcement beam is arranged at the connection between the middle beam and the lower beam; a third transverse reinforcement beam is arranged at the end of the upper beam away from the middle beam; and a fourth transverse reinforcement beam is arranged at the end of the lower beam away from the middle beam.

[0018] As a preferred technical solution, a triangular steel plate is provided at the connection between the stair surface and the transverse beam on the concrete structure beam; one side of the triangular steel plate is transitionally connected to the stair surface, and the other side is fixedly supported above the straight section of the inner beam.

[0019] As a preferred technical solution, a reinforcing connecting beam is further provided on the outer side beam; one end of the reinforcing connecting beam is fixed to the first vertical beam of the concrete structural beam, and the other end is fixed to the outer side beam.

[0020] As a preferred technical solution, the outer surface of the step steel plate is provided with a galvanized steel plate cover layer; the outer surface of the galvanized steel plate cover layer is provided with a stone finishing layer; the step steel plate is formed by welding with 50 angle steel.

[0021] The advantages of the present invention are:

[0022] 1. A fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention has fixed points on the outside, inside and middle of the staircase surface by setting an outer beam, a middle beam and an inner beam, so that the entire staircase surface and the three beams form a whole, so as to achieve overall force bearing and meet the force bearing requirements of the full suspension. At the same time, the entire steel structure staircase is designed to be an H-shaped steel, the steel is not deformed, and the stress structure of the profile is not affected.

[0023] 2. Both the outer and inner beams are suspended from the bottom surface of the concrete structure beam through an arc-shaped path until they are fixed on the transverse beam of the concrete structure beam. The effect of this design method is: the arc-shaped suspension method is adopted to make the inner and outer beams stable in the three-dimensional space, meet the full suspension force requirements, and have an overall beautiful appearance.

[0024] 3. The outer surface of the step steel plate is provided with a galvanized steel plate cover layer; the outer surface of the galvanized steel plate cover layer is provided with a stone facing layer; the step steel plate is welded and formed by 50 angle steel. The effect of this design is: there is no need to use thicker steel plates as in the traditional way, which is conducive to reducing the dead weight of the step steel plate.

[0025] 4. A reinforcing connecting beam is also provided on the outer beam; one end of the reinforcing connecting beam is fixed to the first vertical beam of the concrete structure beam, and the other end is fixed to the outer beam. The effect of this design is that by introducing the reinforcing beam, the outer beam can be further fixed, overcoming the problem of insufficient support force of the outer beam due to being completely suspended. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 It is a structural schematic diagram of a fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention.

[0027] Attached Figure 2It is a schematic diagram of the inner side structure of a fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention.

[0028] Attached Figure 3 It is a side schematic diagram of the fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention.

[0029] Attached Figure 4 This is a schematic diagram of the overall structure of the steel structure staircase.

[0030] Attached Figure 5 It is a top section diagram of a steel structure staircase.

[0031] Attached Figure 6 It is a schematic diagram of the middle section of a steel structure staircase. DETAILED DESCRIPTION

[0032] The specific implementation modes provided by the present invention are described in detail below with reference to the accompanying drawings.

[0033] The reference numerals and components involved in the drawings are as follows:

[0034] 1. Outer beam 2. Inner beam

[0035] 21. Straight section 3. Middle beam

[0036] 31. Upper beam 32. Middle beam

[0037] 33. Lower beam 34. First transverse reinforcement beam

[0038] 35. Second transverse reinforcement beam 36. Third transverse reinforcement beam

[0039] 37. The fourth transverse reinforcement beam 4. Concrete structural beam

[0040] 41. First vertical beam 42. Second vertical beam

[0041] 43. Transverse beam 5. Stair surface

[0042] 51. Step steel plate 52. Triangular steel plate

[0043] 6. Strengthen the connecting beam 7. H-shaped steel connecting plate

[0044] 8. Connecting steel plate 9. Connecting bolts

[0045] 10. Galvanized steel plate 11. Post-installed steel plate

[0046] 12.Chemical bolts 13.Steel plate reinforcement

[0047] 14. Stone facing layer

[0048] Please refer to Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of a fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention. Figure 2 It is a schematic diagram of the inner structure of a fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention. A fully suspended multi-curved special-shaped twisted steel structure staircase, the special-shaped twisted steel structure staircase, the steel structure staircase includes an outer beam 1, a middle beam 3, an inner beam 2, and a concrete structure beam 4; the concrete structure beam 4 includes a first vertical beam 41, a second vertical beam 42 and a transverse beam 43; the first vertical beam 41 and the second vertical beam 42 are distributed in parallel; the second vertical beam 42 is provided with a transverse beam 43.

[0049] One end of the outer beam 1 and the inner beam 2 are fixedly supported on the transverse beam 43 of the concrete structural beam 4, and the other end is fixed on the bottom surface of the concrete structural beam 4; the outer beam 1 and the inner beam 2 are both suspended from the bottom surface of the concrete structural beam 4 through an arc-shaped path until they are fixed on the transverse beam 43 of the concrete structural beam 4; the curvature radius of the outer beam 1 is greater than the curvature radius of the inner beam 2; the inner beam 2 is composed of an arc segment and a straight segment 21; the outer beam 1 is composed of an arc segment as a whole; the middle beam 3 is between the outer beam 1 and the inner beam 2;

[0050] The middle beam 3 includes an upper beam 31, a middle beam 32 and a lower beam 33; a first transverse reinforcement beam 34 is provided at the connection between the upper beam 31 and the middle beam 32; a second transverse reinforcement beam 35 is provided at the connection between the middle beam 32 and the lower beam 33; the upper beam 31 is provided with a third transverse reinforcement beam 36 at the end away from the middle beam 32; and the lower beam 33 is provided with a fourth transverse reinforcement beam 37 at the end away from the middle beam 32.

[0051] A stair surface 5 is provided between the outer beam 1 and the inner beam 2; the stair surface 5 is composed of a step steel plate 51, and the step steel plate 51 is spliced ​​by special-shaped stretching and bending; the stair surface 5 is assembled into an H-shaped steel shape with the outer beam 1 and the inner beam 2 by bending the steel plate; the stair surface 5 is an overall special-shaped curved surface structure. The width of the step steel plate 51 on the outside is greater than the width on the inside.

[0052] Please refer to Figure 3 , Figure 3 It is a side view of the fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention. A triangular steel plate 52 is provided at the connection between the stair surface 5 and the transverse beam 43 on the concrete structure beam 4; one side of the triangular steel plate 52 is transitionally connected to the stair surface 5, and the other side is fixedly supported above the straight section 21 of the inner beam 2.

[0053] The outer side beam 1 is also provided with a reinforcing connecting beam 6 ; one end of the reinforcing connecting beam 6 is fixed to the first vertical beam 41 of the concrete structural beam 4 , and the other end is fixed to the outer side beam 1 .

[0054] Please refer to Figure 4-Figure 6 , Figure 4 This is a schematic diagram of the overall structure of the steel structure staircase. Figure 5 It is a top section diagram of a steel structure staircase. Figure 6 It is a schematic diagram of the middle section of a steel structure staircase. The inner beam 2 and the outer beam 1 are provided with an H-shaped steel connecting plate 7 at the top; connecting steel plates 8 are provided on both sides of the H-shaped steel connecting plate 7; connecting bolts 9 are provided on the connecting steel plate 8; a galvanized steel plate 10 is fixed to one end of the H-shaped steel connecting plate 7 by flange full penetration welding; a rear steel plate 11 is provided at the connection between the galvanized steel plate 10 and the transverse beam 43; a chemical bolt 12 is passed through the rear steel plate 11; and a steel plate reinforcing rib 13 is provided between the rear steel plate 11 and the galvanized steel plate 10.

[0055] The outer surface of the step steel plate 51 is provided with a galvanized steel plate cover layer; the outer surface of the galvanized steel plate cover layer is provided with a stone facing layer 14; the step steel plate 51 is formed by welding with 50 angle steel.

[0056] What needs to be explained in this embodiment is:

[0057] The steel structure staircase is provided with three beams, namely an outer beam 1, a middle beam 3 and an inner beam 2, so that the stair surface 5 has fixed points on the outside, inside and middle, so that the entire stair surface 5 and the three beams form a whole to achieve overall force.

[0058] The outer beam 1 and the inner beam 2 are both suspended from the bottom surface of the concrete structure beam 4 through an arc-shaped path until they are fixed on the transverse beam 43 of the concrete structure beam 4. The effect of this design method is: the arc-shaped suspension method is adopted to enable the inner beam 2 and the outer beam 1 to remain stable in the three-dimensional space, meet the full suspension force requirements, and have an overall beautiful appearance.

[0059] A stair surface 5 is arranged between the outer beam 1 and the inner beam 2; the stair surface 5 is composed of a step steel plate 51, and the step steel plate 51 is spliced ​​by special-shaped stretching and bending. The effect of this design is: force fixing points are established for the inner and outer sides of the stair surface 5, making the stair surface 5 stable. The step steel plate 51 is spliced ​​by special-shaped stretching and bending, which is easy to shape, has good mechanical properties and strong bearing capacity.

[0060] The staircase surface 5 is assembled into an H-shaped steel shape with the outer beam 1 and the inner beam 2 by bending the steel plate. The effect of this design is that the entire steel structure staircase is designed into an H-shaped steel shape, the steel material does not deform, and the stress structure of the profile is not affected.

[0061] The stair surface 5 is a special-shaped curved surface structure as a whole. The effect of this design is that the special-shaped curved surface has stable mechanical properties and strong bearing capacity.

[0062] The width of the step steel plate 51 on the outside is greater than the width on the inside. The effect of this design is that it is convenient for the entire stair surface 5 to form a special-shaped curved surface structure.

[0063] The curvature radius of the outer beam 1 is greater than the curvature radius of the inner beam 2. The effect of this design is that the design is conducive to maintaining the shape of the entire steel structure staircase and preventing deformation.

[0064] The inner beam 2 is composed of an arc segment and a straight segment 21; the outer beam 1 is composed of an arc segment as a whole. The effect of this design is that the arc segment of the inner beam 2 supports the inner side of the steel structure staircase, and the straight segment 21 of the inner beam 2 mainly supports the top of the steel structure staircase; the outer beam 1 is composed of an arc segment as a whole, which realizes the outer side support of the steel structure staircase. In this way, the inner side, outer side and top of the steel structure staircase are supported, so that the overall force of the steel structure staircase is good.

[0065] The two ends of the step steel plate 51 are fixedly welded to the outer beam 1 and the inner beam 2; the inner middle of the step steel plate 51 is fixedly welded to the middle beam 3. The effect of this design is that each step steel plate 51 constituting the stair surface 5 is fixed at both ends and in the middle, with a precise fixing effect and convenient construction.

[0066] The middle beam 3 includes an upper beam 31, a middle beam 32 and a lower beam 33; a first transverse reinforcement beam 34 is provided at the connection between the upper beam 31 and the middle beam 32; a second transverse reinforcement beam 35 is provided at the connection between the middle beam 32 and the lower beam 33; a third transverse reinforcement beam 36 is provided at the end of the upper beam 31 away from the middle beam 32; a fourth transverse reinforcement beam 37 is provided at the end of the lower beam 33 away from the middle beam 32. The effect of this design is that the longitudinal middle position of the entire stair surface 5, as well as the top, middle and bottom parts in the transverse direction can all be supported and reinforced, and the outer beam 1, the inner beam 2 and the middle beam 3 are connected to each other at multiple points, and the overall force bearing capacity is good, meeting the requirements of full suspension.

[0067] The stair surface 5 is provided with a triangular steel plate 52 at the connection with the transverse beam 43 on the concrete structure beam 4; one side of the triangular steel plate 52 is transitionally connected with the stair surface 5, and the other side is fixedly supported above the straight section 21 of the inner beam 2. The effect of this design is that the triangular steel plate 52 is a connecting plate, and the three sides of the triangular steel plate 52 are cleverly used to facilitate the establishment of three fixing surfaces, thereby achieving the fixation between the outer beam 1, the inner beam 2 and the transverse beam 43.

[0068] The outer side beam 1 is also provided with a reinforcing connecting beam 6; one end of the reinforcing connecting beam 6 is fixed to the first vertical beam 41 of the concrete structure beam 4, and the other end is fixed to the outer side beam 1. The effect of this design is that by introducing the reinforcing beam, the outer side beam 1 can be further fixed, overcoming the insufficient support force of the outer side beam 1 due to being completely suspended.

[0069] The outer surface of the step steel plate 51 is provided with a galvanized steel plate cover layer; the outer surface of the galvanized steel plate cover layer is provided with a stone finishing layer 14; the step steel plate 51 is formed by welding 50 angle steel. The effect of this design is that it does not need to use a thicker steel plate as in the traditional way, which is conducive to reducing the dead weight of the step steel plate 51.

[0070] A fully suspended multi-curved special-shaped twisted steel structure staircase of the present invention is provided with an outer beam 1, a middle beam 3 and an inner beam 2, so that the stair surface 5 has fixed points on the outside, the inside and the middle, so that the entire stair surface 5 and the three beams form a whole to achieve overall stress. At the same time, the entire steel structure staircase is designed to be an H-shaped steel, the steel is not deformed, and the stress structure of the profile is not affected, which can meet the overall stress of the fully suspended large-arc staircase.

[0071] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present invention. These improvements and supplements should also be regarded as the scope of protection of the present invention.

Claims

1. A fully suspended multi-curved special-shaped twisted steel structure staircase, characterized in that: The special-shaped twisted steel structure staircase comprises an outer beam, an intermediate beam, an inner beam and a concrete structure beam; the concrete structure beam comprises a first vertical beam, a second vertical beam and a transverse beam; the first vertical beam and the second vertical beam are distributed in parallel; a transverse beam is arranged on the second vertical beam; one end of the outer beam and the inner beam are fixedly supported on the transverse beam of the concrete structure beam, and the other end is fixed on the bottom surface of the concrete structure beam; the outer beam and the inner beam are both suspended from the bottom surface of the concrete structure beam through an arc-shaped path until they are fixed on the transverse beam of the concrete structure beam; the intermediate beam is between the outer beam and the inner beam; a stair surface is arranged between the outer beam and the inner beam; the stair surface is composed of step steel plates, and the step steel plates are spliced ​​by special-shaped stretching and bending; the stair surface is assembled into an H-shaped steel shape with the outer beam and the inner beam by bending the steel plates; The inner beam is composed of arc segments and straight segments; the outer beam is composed of arc segments as a whole; The middle beam comprises an upper beam, a middle beam and a lower beam; a first transverse reinforcement beam is provided at the connection between the upper beam and the middle beam; a second transverse reinforcement beam is provided at the connection between the middle beam and the lower beam; a third transverse reinforcement beam is provided at the end of the upper beam away from the middle beam; a fourth transverse reinforcement beam is provided at the end of the lower beam away from the middle beam; A triangular steel plate is provided at the connection between the stair surface and the transverse beam on the concrete structure beam; one side of the triangular steel plate is transitionally connected to the stair surface, and the other side is fixedly supported above the straight section of the inner beam; A reinforcing connecting beam is also provided on the outer side beam; one end of the reinforcing connecting beam is fixed on the first vertical beam of the concrete structure beam, and the other end is fixed on the outer side beam.

2. The fully suspended multi-curved special-shaped twisted steel structure staircase according to claim 1 is characterized in that: The stair surface is an overall special-shaped curved structure.

3. The fully suspended multi-curved special-shaped twisted steel structure staircase according to claim 1 is characterized in that: The width of the step steel plate on the outside is greater than the width on the inside.

4. The fully suspended multi-curved special-shaped twisted steel structure staircase according to claim 1 is characterized in that: The curvature radius of the outer beam is greater than the curvature radius of the inner beam.

5. The fully suspended multi-curved special-shaped twisted steel structure staircase according to claim 1 is characterized in that: The two ends of the step steel plate are fixedly welded to the outer beam and the inner beam; the inner middle of the step steel plate is fixedly welded to the middle beam.

6. The fully suspended multi-curved special-shaped twisted steel structure staircase according to claim 1 is characterized in that: The outer surface of the step steel plate is provided with a galvanized steel plate cover layer; the outer surface of the galvanized steel plate cover layer is provided with a stone facing layer; the step steel plate is formed by welding with 50 angle steel.

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