Large-span unsupported spiral stair design structure with tensioning structure

Abstract

The invention discloses a large-span support-free spiral stair design structure with a tension structure, comprising: a spiral stair main body comprising a spiral handrail structure and step plates, the plurality of step plates being arranged on the spiral handrail structure at intervals along the extension direction of the spiral handrail structure; the first tie bar is in butt joint with a plurality of layers of spiral sections which are vertically distributed in the spiral handrail structure; the end of the second lacing wire is in butt joint with the spiral handrail structure through an adjusting structure, the second lacing wire is supported at the bottom of the step plate, the adjusting structure comprises a sliding seat and an adjusting positioning piece, the sliding seat is arranged in a movable groove of the spiral handrail structure in a sliding mode, the end of the second lacing wire penetrates through the first opening and is in butt joint with the sliding seat, and the adjusting positioning piece positions the sliding seat. The problems that an existing large-span spiral staircase without middle column supporting is poor in structural stability and bearing capacity, the integrity is insufficient, when local stress is obvious, stress cannot be fully transmitted and offset, structural damage is likely to happen, and the service life is shortened can be solved.

Description

Technical Field

[0001] This invention relates to the field of architectural decoration technology, specifically to a design structure for a large-span unsupported spiral staircase with a tension structure. Background Technology

[0002] A spiral staircase is a type of staircase that uses a central axis as support and a spiral or curved structure to achieve vertical transportation. Its core features are space saving and visual appeal, and it is commonly used in modern architecture. With the development of modern architectural design concepts, the styles and shapes of spiral staircases have become increasingly diverse, and the structures of some styles have gradually become simplified, resulting in a simpler appearance, greatly reducing the construction period, and facilitating subsequent decorative layout. For example, spiral staircases without central columns or other supporting structures are spiral staircase designs that tend towards the above-mentioned concepts.

[0003] Traditional spiral staircases often face challenges in structural strength, stability, and load-bearing capacity during design and construction. This is especially true in large spaces with no central column, where designing and implementing a stable, aesthetically pleasing, large-span spiral staircase has become a significant technical challenge for the current decoration industry. Considering that a column-free spiral staircase must withstand complex stress states, including combinations of bending, torsion, shear, and compression, ensuring overall structural stability and enhancing the load-bearing capacity of the treads are paramount. Furthermore, the handrails on both sides of the staircase are connected to the building's foundation, with treads positioned between them. This results in insufficient overall structural integrity. When significant stress is applied to a specific area, the stress cannot be adequately transferred to the rest of the staircase to buffer and offset the forces, leading to structural damage, breakage, and a reduced lifespan. Summary of the Invention

[0004] The purpose of this invention is to address the problems of poor stability and load-bearing capacity, insufficient overall integrity, and inability to fully transfer and offset stress when subjected to significant local forces, which easily leads to structural damage and reduced service life of existing large-span unsupported spiral staircases. Therefore, this invention provides a design structure for a large-span unsupported spiral staircase with a tension structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large-span unsupported spiral staircase design structure with a tension structure, comprising:

[0006] The main body of the spiral staircase includes a spiral handrail structure and treads, with a plurality of treads spaced apart on the spiral handrail structure along the extending direction of the spiral handrail structure.

[0007] The first tie rod connects to several vertically distributed spiral segments in the spiral handrail structure;

[0008] The second tie rod has its end connected to the spiral handrail structure via an adjustment structure and is supported at the bottom of the step plate. The adjustment structure includes a slide and an adjustment positioning component. The slide is slidably disposed in the movable groove of the spiral handrail structure. The end of the second tie rod passes through the first opening and extends into the movable groove, where it connects to the slide. The adjustment positioning component positions the slide.

[0009] As a further description of the above technical solution:

[0010] The first tie rod passes through the through hole in the sleeve on the spiral handrail structure, and the fastener passes through the reserved hole on the sleeve and is screwed and positioned on the spiral handrail structure and the step plate.

[0011] As a further description of the above technical solution:

[0012] The bottom of the step plate is provided with a downwardly protruding arc-shaped support block, and the second tie rod abuts against the arc-shaped support block.

[0013] As a further description of the above technical solution:

[0014] The arc-shaped support block is provided with several arc-shaped reinforcing ribs at intervals on its sides.

[0015] As a further description of the above technical solution:

[0016] The second tie rod passes through the notch on the arc-shaped reinforcing rib.

[0017] As a further description of the above technical solution:

[0018] The first and second tie rods are made of high-strength steel strands or carbon fiber bundles.

[0019] As a further description of the above technical solution:

[0020] The end of the second tie rod passes through the second opening on the side of the slide, and the connecting block on it is embedded in the connecting groove inside the slide.

[0021] As a further description of the above technical solution:

[0022] Both the connecting block and the connecting groove are spherical structures, and the connecting block is rotatably connected within the connecting groove.

[0023] As a further description of the above technical solution:

[0024] The adjusting and positioning component is a bolt, which is screwed into the screw hole of the spiral handrail structure and extends into the movable groove, with its inner end abutting against the slide block.

[0025] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0026] 1. The spiral staircase of the present invention adopts a structural design without a central column or other support, and improves the assembly strength of the spiral staircase through a tension structure composed of a first tie rod and a second tie rod. The tie rod creates prestress inside the spiral staircase to offset the stress generated by external loads such as external wind force and step pressure, thereby improving the overall stability of the structure. The first tie rod is used to connect the spiral segments of each layer in a single spiral handrail structure to achieve structural shaping and reinforcement, while the second tie rod is used to connect the spiral handrail structures on both sides of the spiral staircase and support the step plates, so that the force on both is transferred to the entire spiral staircase, thereby improving the integrity and structural stability of the spiral staircase.

[0027] 2. By adjusting the position of the slide block, the support position and prestress strength of the second tie rod on the arc-shaped support block can be adjusted. This allows for adjustments to the support position and strength of the step plate in different application scenarios, improving the convenience of assembly and subsequent structural adjustments, as well as its adaptability to multiple scenarios. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a sectional view of a large-span unsupported spiral staircase design with a tension structure.

[0030] Figure 2 This is a structural diagram of the connection node between the main body of the spiral staircase and the first tie rod in a large-span unsupported spiral staircase design with a tension structure.

[0031] Figure 3 This is a structural diagram of the connection node between the main body of the spiral staircase and the second tie rod in a large-span unsupported spiral staircase design with a tension structure.

[0032] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0033] Legend:

[0034] 1. Spiral handrail structure; 2. Step plate; 3. First tie rod; 4. Second tie rod; 5. Slide seat; 6. Adjustable positioning component; 7. Movable groove; 8. First opening; 9. Hoop; 10. Perforation; 11. Fastener; 12. Arc-shaped support block; 13. Arc-shaped reinforcing rib; 14. Notch; 15. Connecting block; 16. Second opening; 17. Connecting groove; 18. Screw hole. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1:

[0041] Please see Figure 1-4This invention provides a technical solution: a large-span unsupported spiral staircase design structure with a tension structure, comprising:

[0042] The main body of the spiral staircase includes a spiral handrail structure 1 and step plates 2, with a plurality of step plates 2 arranged at intervals on the spiral handrail structure 1 along the extending direction of the spiral handrail structure 1.

[0043] The first tie rod 3 connects to several vertically distributed spiral segments in the spiral handrail structure 1;

[0044] The second tie rod 4 has its end connected to the spiral handrail structure 1 through an adjustment structure and is supported at the bottom of the step plate 2. The adjustment structure includes a slide 5 and an adjustment positioning member 6. The slide 5 is slidably disposed in the movable groove 7 of the spiral handrail structure 1. The end of the second tie rod 4 passes through the first opening 8 and extends into the movable groove 7, where it connects to the slide 5. The adjustment positioning member 6 positions the slide 5.

[0045] The spiral staircase of this invention adopts a structural design without a central column or other support. The assembly strength of the spiral staircase is improved by a tension structure composed of a first tie rod and a second tie rod. The tie rod creates prestress inside the spiral staircase to counteract the stress generated by external loads such as wind force and pressure from stepping on the treads, thereby improving the overall stability of the structure. The first tie rod is used to connect the spiral segments of each layer in a single spiral handrail structure to achieve structural shaping and reinforcement, while the second tie rod is used to connect the spiral handrail structures on both sides of the staircase and support the treads, so that the forces on both are transferred to the entire staircase, thereby improving the integrity and structural stability of the staircase.

[0046] The first tie rod 3 passes through the through hole 10 in the sleeve 9 on the spiral handrail structure 1, and the fastener 11 passes through the reserved hole on the sleeve 9 and is screwed and positioned on the spiral handrail structure 1 and the step plate 2. This achieves rapid positioning and stable assembly of the first tie rod 3.

[0047] The first tie rod 3 and the second tie rod 4 are high-strength steel strands or carbon fiber bundles. By tensioning the high-strength steel strands or carbon fiber bundles, the structural strength of the tie rods themselves is improved, thereby making the connection between the structures within the spiral staircase more stable.

[0048] The end of the second tie rod 4 passes through the second opening 16 on the side of the slide block 5, and the connecting block 15 on it is embedded in the connecting groove 17 inside the slide block 5.

[0049] The adjusting and positioning component 6 is a bolt, which is screwed into the screw hole 18 of the spiral handrail structure 1 and extends into the movable groove 7, with its inner end abutting against the slide block 5.

[0050] The assembly process of a large-span unsupported spiral staircase design structure with tension structure in this embodiment includes: first, connecting the main body of the spiral staircase with the building structure to form the basic structure of the spiral staircase; the end of the first tie rod 3 passes through the through hole 10 in the sleeve 9, and the fastener 11 passes through the reserved hole on the sleeve 9 and is screwed and positioned on the spiral handrail structure 1 and the step plate 2, thus completing the installation of the sleeve 9, the positioning of the end of the first tie rod 3, and the tensioning assembly of the spiral handrail structure 1; then, the adjusting positioning part 6 is screwed into the screw hole 18 and the slide 5 in the spiral handrail structure 1 is lifted, so that the second tie rod 4 fully abuts against the step plate 2 to provide stable support, thus completing the assembly.

[0051] Example 2:

[0052] Please see Figure 3 , 4 The figure shows a design structure for a large-span unsupported spiral staircase with a tension structure provided in Embodiment 2 of the present invention. Based on the above embodiments, this embodiment further improves upon the following technical solution: A downwardly protruding arc-shaped support block 12 is provided at the bottom of the step 2, and the second tie rod 4 abuts against the arc-shaped support block 12. This allows for adjustments to the support effect of the step 2 under different application scenarios. Specifically, two spiral handrail structures 1 are provided in this spiral staircase, and two sliding seats 5 corresponding to a single second tie rod 4 are respectively set within the two spiral handrail structures 1. By adjusting the screw-in degree of the positioning member 6, the position of the two sliding seats 5 can be adjusted, thereby adjusting the support position and prestress strength of the second tie rod 4 on the arc-shaped support block 12. During this process, the second tie rod 4 adaptively moves along the first opening 8 of the waist shape, referring to… Figure 3 , 4 When the left side of the two slide blocks 5 is higher than the right side, the second tie rod 4 mainly supports the left side of the step plate 2. Conversely, it supports the right side. The higher the slide block 5 is, the greater the deformation and stretching of the second tie rod 4, and the stronger the force on the arc-shaped support block 12, so as to improve the prestress strength.

[0053] The arc-shaped support block 12 is provided with several arc-shaped reinforcing ribs 13 at intervals on its sides (from one spiral handrail structure 1 towards another spiral handrail structure 1). The arc-shaped reinforcing ribs 13 are arc-shaped structures corresponding to the curvature of the spiral handrail structure 1 and the step plate 2 at the corresponding positions. This further improves the load-bearing capacity of the step plate 2.

[0054] The second tie rod 4 passes through the notch 14 on the arc-shaped reinforcing rib 13 to limit the second tie rod 4 and improve its stability.

[0055] Example 3:

[0056] Please see Figure 3 , 4The figure shows a design structure for a large-span unsupported spiral staircase with a tension structure provided in Embodiment 3 of the present invention. Based on the above embodiments, this embodiment further improves upon the following technical solutions: both the connecting block 15 and the connecting groove 17 are spherical structures, and the connecting block 15 is rotatably connected within the connecting groove 17. This allows the connecting block 15 to adaptively rotate and adjust to a suitable angle when the position of the second tie rod 4 changes or the structure deforms. The hinged design of the end of the second tie rod 4 with the slide 5 reduces the forces and damage between structures, and improves assembly stability and service life.

[0057] In summary, due to the adoption of the above technical solutions, the large-span unsupported spiral staircase design structure with tension structure in this embodiment has the following advantages compared with the prior art:

[0058] 1. The spiral staircase of the present invention adopts a structural design without a central column or other support, and improves the assembly strength of the spiral staircase through a tension structure composed of a first tie rod and a second tie rod. The tie rod creates prestress inside the spiral staircase to offset the stress generated by external loads such as external wind force and step pressure, thereby improving the overall stability of the structure. The first tie rod is used to connect the spiral segments of each layer in a single spiral handrail structure to achieve structural shaping and reinforcement, while the second tie rod is used to connect the spiral handrail structures on both sides of the spiral staircase and support the step plates, so that the force on both is transferred to the entire spiral staircase, thereby improving the integrity and structural stability of the spiral staircase.

[0059] 2. By adjusting the position of the slide block, the support position and prestress strength of the second tie rod on the arc-shaped support block can be adjusted. This allows for adjustments to the support position and strength of the step plate in different application scenarios, improving the convenience of assembly and subsequent structural adjustments, as well as its adaptability to multiple scenarios.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A design structure for a large-span unsupported spiral staircase with a tension structure, characterized in that, include: The main body of the spiral staircase includes a spiral handrail structure and treads, with a plurality of treads spaced apart on the spiral handrail structure along the extending direction of the spiral handrail structure. The first tie rod connects to several vertically distributed spiral segments in the spiral handrail structure; The second tie rod has its end connected to the spiral handrail structure via an adjustment structure and is supported at the bottom of the step plate. The adjustment structure includes a slide and an adjustment positioning component. The slide is slidably disposed in the movable groove of the spiral handrail structure. The end of the second tie rod passes through the first opening and extends into the movable groove, where it connects to the slide. The adjustment positioning component positions the slide.

2. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 1, characterized in that, The first tie rod passes through the through hole in the sleeve on the spiral handrail structure, and the fastener passes through the reserved hole on the sleeve and is screwed and positioned on the spiral handrail structure and the step plate.

3. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 1, characterized in that, The bottom of the step plate is provided with a downwardly protruding arc-shaped support block, and the second tie rod abuts against the arc-shaped support block.

4. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 3, characterized in that, The arc-shaped support block is provided with several arc-shaped reinforcing ribs at intervals on its sides.

5. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 4, characterized in that, The second tie rod passes through the notch on the arc-shaped reinforcing rib.

6. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 1, characterized in that, The first and second tie rods are made of high-strength steel strands or carbon fiber bundles.

7. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 1, characterized in that, The end of the second tie rod passes through the second opening on the side of the slide, and the connecting block on it is embedded in the connecting groove inside the slide.

8. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 7, characterized in that, Both the connecting block and the connecting groove are spherical structures, and the connecting block is rotatably connected within the connecting groove.

9. The design structure of a large-span unsupported spiral staircase with a tension structure according to claim 1, characterized in that, The adjusting and positioning component is a bolt, which is screwed into the screw hole of the spiral handrail structure and extends into the movable groove, with its inner end abutting against the slide block.

Images