Spoke type cable-supported grid roof

Abstract

The utility model relates to a spoke type cable-supported grid roof which comprises an upper steel structure, an outermost side pressing ring beam, radial cables and annular cables, the radial cables and the annular cables are connected in a crossed mode to form a cable net system, and the cable net system is connected with the upper steel structure and the outermost side pressing ring beam and is configured to enable the upper steel structure to be stable; wherein the connection point of the radial cable and the circumferential cable has a designed elevation; the design elevation is achieved by lowering the connection point of the radial cable and the annular cable from the traction elevation obtained by reverse tensioning operation by utilizing the self weight of the upper steel structure in the construction process. The structure is simple, the construction efficiency is high, the construction cost is low, and a larger-span structure system can be achieved with less steel consumption and better economical efficiency.

Description

Technical Field

[0001] This application belongs to the field of building construction technology, and specifically relates to a spoke-type cable-supported grid roof. Background Technology

[0002] Due to their large spatial span and structural stability, spoke-type tensioned structures are often used for roofs of large-span spaces such as stadiums.

[0003] Currently, the main construction method for spoke-type cable-supported grid structures is the scaffolding method. This involves first setting up temporary construction support frames for the upper steel structure. After the upper steel structure is installed, radial and circumferential cables are tensioned to provide overall structural stiffness. Generally speaking, the scaffolding method is less difficult to construct and requires less simulation analysis of the construction process, and is widely used in various spoke-type cable-supported grid structure stadiums. However, the scaffolding method requires setting up a large number of temporary construction support frames, which are costly to manufacture. Furthermore, the frames support the lower concrete structure, necessitating consideration of overlapping operations with the concrete structure, making the construction process cumbersome. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a spoke-type cable-supported grid roof to solve the problems of the existing technology, which requires a large number of temporary construction support frames during the installation of the upper steel structure, resulting in high costs and complicated construction processes due to the need to consider the overlapping operations with the concrete structure.

[0005] The purpose of this utility model is achieved as follows:

[0006] A spoke-type cable-supported grid roof includes an upper steel structure, an outermost pressure ring beam, radial cables and circumferential cables, wherein the radial cables and circumferential cables are cross-connected to form a cable net system, and the cable net system is connected to the upper steel structure and the outermost pressure ring beam, and is configured to stabilize the upper steel structure.

[0007] The connection point between the radial cable and the circumferential cable has a design elevation; the design elevation is achieved during construction by using the self-weight of the upper steel structure to lower the traction elevation of the connection point between the radial cable and the circumferential cable through a counter-tensioning operation.

[0008] Furthermore, the upper steel structure includes radial steel beams, cantilever beams, a central pressure ring beam, an innermost ring beam, outer struts, and inner struts at the cantilever ends.

[0009] Furthermore, the outermost pressure ring beam, the middle pressure ring beam, the innermost ring beam, and the circumferential cable are all circular ring structures. The middle pressure ring beam is located between the outermost pressure ring beam and the innermost ring beam, and the circumferential cable is located below the cantilever beam. In addition, the cantilever beam and the circumferential cable are connected by an outer support rod and an inner support rod at the cantilever end. Multiple radial steel beams are provided between the outermost pressure ring beam and the middle pressure ring beam. Multiple cantilever beams are provided between the middle pressure ring beam and the innermost ring beam.

[0010] Furthermore, the outermost pressure ring beam forms a first ring, the middle pressure ring beam forms a second ring, the innermost ring beam forms a third ring, and the circumferential cable has a fourth ring diameter, with the first ring diameter > the second ring diameter > the fourth ring diameter > the third ring diameter.

[0011] Furthermore, the upper steel structure also includes a circumferential connecting beam, which is a circular ring structure.

[0012] Furthermore, the circumferential connecting beam is arranged in a concentric circle between the outermost pressure ring beam and the central pressure ring beam, and is connected to the radial steel beam; and / or, is arranged between the central pressure ring beam and the innermost ring beam, and is connected to the cantilever beam.

[0013] Furthermore, the upper steel structure also includes radial steel beam support rods, which are connected between the radial cables and the radial steel beams and are configured to support the radial steel beams in an axial manner.

[0014] Furthermore, the radial steel beams are multiple in number and arranged vertically in parallel.

[0015] Furthermore, the connection point between the first end of the radial cable, the first end of the radial steel beam, and the outermost pressure ring beam is the first node; the connection point between the second end of the radial cable, the first end of the outer support rod, the first end of the inner support rod of the cantilever end, and the circumferential cable is the second node; the connection point between the second end of the radial steel beam, the second end of the outer support rod, the first end of the cantilever beam, and the central pressure ring beam is the third node; the connection point between the second end of the inner support rod of the cantilever end and the cantilever beam is the fourth node; the connection point between the second end of the cantilever beam and the innermost ring beam is the fifth node, which does not coincide with the fourth node, so that the innermost ring beam is in a cantilever state.

[0016] Furthermore, the outer struts, inner struts at the cantilever end, radial cables, radial steel beams, cantilever beams, and radial steel beam support rods are arranged in groups as supporting structural units. All components of each supporting structural unit are located in the same vertical plane. Multiple supporting structural units are evenly and symmetrically arranged on a circle with the center of the roof as the center. All supporting structural units together form a stable roof structure through the outermost pressure ring beam, the middle pressure ring beam, the innermost ring beam, and the circumferential cables.

[0017] Compared with existing technologies, the spoke-type cable-supported grid roof provided by this utility model combines the cable and grid structure system, combining the flexibility of the cable with the rigidity of the grid structure, making full use of their respective characteristics, and allowing the cable and grid to achieve optimal stress performance. The structure is simple, the construction efficiency is high, and the construction cost is low. It achieves a larger span structural system with less steel and better economy. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A three-dimensional axonometric schematic diagram of the spoke-type cable-supported grid roof provided by this utility model;

[0020] Figure 2 A top view of the spoke-type cable-supported grid roof provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the spoke-type cable-supported grid roof provided by this utility model;

[0022] Figure 4 A schematic diagram of the construction process of the spoke-type cable-supported grid roof provided by this utility model. Figure 1 ;

[0023] Figure 5 A schematic diagram of the construction process of the spoke-type cable-supported grid roof provided by this utility model. Figure 2 ;

[0024] Figure 6 A schematic diagram of the construction process of the spoke-type cable-supported grid roof provided by this utility model. Figure 3 ;

[0025] Figure 7 A schematic diagram of the construction process of the spoke-type cable-supported grid roof provided by this utility model. Figure 4 ;

[0026] Figure 8 A schematic diagram illustrating the setting of counterweights for vertical construction cables provided by this utility model;

[0027] Figure 9 A schematic diagram showing the vertical construction cable anchored to the grandstand beam for this utility model;

[0028] Figure 10 This is a schematic diagram of the vertical construction cable anchored to the anchor pile provided by this utility model.

[0029] Figure label:

[0030] 1. Upper steel structure; 2. Outermost pressure ring beam; 3. Radial cable; 4. Circumferential cable; 5. Vertical construction cable; 6. Radial steel beam; 7. Cantilever beam; 8. Central pressure ring beam; 9. Circumferential connecting beam; 10. Innermost ring beam; 11. Outer strut; 12. Inner strut at the cantilever end; 13. Radial steel beam support rod; 14. Grandstand; 15. Grandstand beam; 16. Anchor pile; 17. Weight. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0033] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0034] Example 1

[0035] A specific embodiment of this utility model is as follows: Figures 1 to 3 As shown, a spoke-type cable-supported grid roof is disclosed, including an upper steel structure 1, an outermost pressure ring beam 2, radial cables 3 and circumferential cables 4. The radial cables 3 and circumferential cables 4 are cross-connected to form a cable net system. The cable net system is connected to the upper steel structure 1 and the outermost pressure ring beam 2 and is configured to stabilize the upper steel structure 1.

[0036] The connection point between radial cable 3 and circumferential cable 4 has a design elevation. This design elevation is achieved during construction by using the self-weight of the upper steel structure 1 to lower the traction elevation of the connection point through a counter-tensioning operation. In other words, during construction, the vertical construction cable 5 is used to counter-tension the radial cable 3 and circumferential cable 4, and the self-weight of the upper steel structure 1 lowers the node elevation of the radial cable 3 and circumferential cable 4 to the design elevation. The vertical construction cable 5 is only used during construction. It tensions the radial cable 3 and circumferential cable 4 to a traction elevation higher than the design elevation. After construction is completed, the vertical construction cable 5 is removed.

[0037] In this embodiment, the upper steel structure 1 includes radial steel beams 6, cantilever beams 7, a central pressure ring beam 8, a circumferential connecting beam 9, an innermost ring beam 10, outermost support rods 11, and innermost support rods 12 at the cantilever end. The outermost pressure ring beam 2, the central pressure ring beam 8, and the innermost ring beam 10 are all circular ring structures. The central pressure ring beam 8 is located between the outermost pressure ring beam 2 and the innermost ring beam 10. The outermost pressure ring beam 2 forms a first ring, the central pressure ring beam 8 forms a second ring, and the innermost ring beam 10 forms a third ring, with the diameter of the first ring > the diameter of the second ring > the diameter of the third ring. The diameter of the ring; multiple radial steel beams 6 are provided between the outermost pressure ring beam 2 and the middle pressure ring beam 8; multiple cantilever beams 7 are provided between the middle pressure ring beam 8 and the innermost ring beam 10; the circumferential cable 4 is a ring structure with a fourth ring diameter, and the third ring diameter < the fourth ring diameter < the second ring diameter; the circumferential cable 4 is located below the cantilever beam 7, and the cantilever beam 7 and the circumferential cable 4 are connected by an outer support rod 11 and an inner support rod 12 at the cantilever end, and the cantilever beam 7, the outer support rod 11, and the inner support rod 12 at the cantilever end form a triangular support structure.

[0038] In this embodiment, the outer strut 11, the inner strut 12 of the cantilever end, the radial cable 3, the radial steel beam 6, and the cantilever beam 7 are arranged in groups as supporting structural units. All components of each supporting structural unit are located in the same vertical plane. Multiple supporting structural units are evenly and symmetrically arranged around a circle with the center of the roof as the center. All supporting structural units together form a stable roof structure system through the outermost pressure ring beam 2, the middle pressure ring beam 8, the innermost ring beam 10, and the circumferential cable 4 of the ring structure.

[0039] In this embodiment, the connection point between the first end of the radial cable 3, the first end of the radial steel beam 6, and the outermost pressure ring beam 2 is the first node; the connection point between the second end of the radial cable 3, the first end of the outer support rod 11, the first end of the cantilever end inner support rod 12, and the circumferential cable 4 is the second node; the connection point between the vertical construction cable 5 and the radial cable 3 and the circumferential cable 4 is located at the second node; the connection point between the second end of the radial steel beam 6, the second end of the outer support rod 11, the first end of the cantilever beam 7, and the central pressure ring beam 8 is the third node; the connection point between the second end of the cantilever end inner support rod 12 and the cantilever beam 7 is the fourth node; the connection point between the second end of the cantilever beam 7 and the innermost ring beam 10 is the fifth node, which does not coincide with the fourth node, so that the innermost ring beam 10 is in a cantilever state.

[0040] In this embodiment, the circumferential connecting beam 9 is a circular ring structure, arranged in a concentric circle pattern between the outermost pressure ring beam 2 and the middle pressure ring beam 8, and connected to the radial steel beam 6; and / or, arranged between the middle pressure ring beam 8 and the innermost ring beam 10, and connected to the cantilever beam 7.

[0041] In one alternative embodiment, the upper steel structure 1 further includes radial steel beam support rods 13, which connect the radial cables 3 and the radial steel beams 6, providing support points for the radial steel beams 6 with axial force. The radial steel beam support rods 13 also serve as part of the supporting structural unit, and are located in the same vertical plane as other components of the radial steel beam support rods 13. There are multiple radial steel beams 6, arranged vertically in parallel. By providing radial steel beam support rods 13, which are connected to the radial cables 3, and applying prestress to the radial cables 3 and circumferential cables 4, the radial steel beam support rods 13 provide support points for the radial steel beams 6 with axial force, optimizing the bending moment distribution of the radial steel beams 6, effectively reducing the cross-sectional dimensions of the radial steel beams 6, and improving economic efficiency.

[0042] The reverse tensioning construction method for spoke-type cable-supported grid roofs, and the different states during construction, are detailed in the following section. Figures 4 to 7 ,

[0043] In this embodiment, the reverse tensioning construction method for the spoke-type cable-supported grid roof includes the following steps:

[0044] Step 1: Install the outermost pressure ring beam 2;

[0045] Step 2: Lay radial cables 3 and circumferential cables 4 on the ground and connect radial cables 3 and circumferential cables 4;

[0046] Step 3: Use traction equipment to pull the radial cable 3 and the circumferential cable 4 upward. When the second node is lifted about 1m from the ground, that is, when the circumferential cable 4 is lifted about 1m from the ground, connect the upper end of the vertical construction cable 5 to the circumferential cable 4. The connection position is at the second node.

[0047] Step 4: Continue to pull radial cable 3 and circumferential cable 4 using the traction equipment until the second node of radial cable 3 and circumferential cable 4 is pulled to the traction elevation. At this time, connect the first end of radial cable 3 to the outermost pressure ring beam 2 at the first node.

[0048] Step 5: Tension and anchor the lower end of the vertical construction cable 5 to the anchor pile 16. At this time, adjust the cable force through the vertical construction cable 5, and pull down the second node of the vertical construction cable 5 and the radial cable 3 and the circumferential cable 4 from the current traction elevation to the initial elevation.

[0049] Step 6: Assemble the upper steel structure 1 on the ground, hoist it to the air, and connect it with the radial cable 3 and the circumferential cable 4. After all the upper steel structures 1 are installed, under the self-weight of the upper steel structure 1, the second node elevation of the radial cable 3 and the circumferential cable 4 will drop from the initial elevation to the design elevation, and the internal force of the vertical construction cable 5 will be automatically released under the self-weight of the upper steel structure 1. During this process, the length of the vertical construction cable 5 will shorten as the elevation of the second node decreases. This is because the vertical construction cable 5 is a fixed-length cable, and its stress-free length is from the bottom anchor point elevation of the vertical construction cable 5 to the design elevation. Therefore, when the top elevation of the vertical construction cable 5 reaches the initial elevation, that is, when the elevation of the second node reaches the initial elevation, the vertical construction cable 5 reaches the initial internal force due to elongation. After the installation of the upper steel structure 1 is completed, when the elevation of the second node of the radial cable 3 and the circumferential cable 4 decreases from the initial elevation to the design elevation, the length of the vertical construction cable 5 becomes the stress-free length. Therefore, the internal force of the vertical construction cable 5 will become 0. After the installation of the upper steel structure 1 is completed, the internal force of the vertical construction cable 5 will be automatically released under the self-weight of the upper steel structure 1.

[0050] Step 7: After the upper steel structure 1 is installed, remove the vertical construction cables 5. At this point, the spoke-type cable-supported grid roof structure system has reached its initial design state. The initial state refers to the state in which the deformation of the structure under its own weight is basically zero.

[0051] In step five, the anchoring methods for the vertical construction cable 5 can include counterweight 17, anchoring to the grandstand beam 15, or anchoring to the anchor pile 16, etc. See [link / reference needed]. Figures 8 to 10 The anchoring method of the vertical construction cable 5 can be comprehensively determined by combining the second nodes of the radial cable 3 and the circumferential cable 4, which correspond to the inner and outer sides of the grandstand 14. For example, when the second nodes of the radial cable 3 and the circumferential cable 4 are located inside the grandstand 14, the anchoring method using the weight 17 and anchoring to the grandstand beam 15 is adopted; when the second nodes of the radial cable 3 and the circumferential cable 4 are located outside the grandstand 14, the anchoring method using the anchor pile 16 is adopted. During construction, different anchoring methods can be adopted for the vertical construction cables according to the site characteristics. For example, the anchoring method of the vertical construction cables can be comprehensively determined by combining the second nodes of the radial cable and the circumferential cable, which correspond to the inner and outer sides of the grandstand, thereby improving construction efficiency and reducing construction costs.

[0052] Compared with the prior art, the spoke-type cable-supported grid roof provided in this embodiment has the following advantages:

[0053] 1. By combining cable and grid structure systems, the flexibility of cables and the rigidity of grid structures are combined, making full use of their respective characteristics and maximizing the stress performance of both cables and grids. The structure is simple, efficient, and cost-effective, achieving a larger span structure system with less steel and better economy.

[0054] 2. Compared to the traditional spoke-type cable-supported roof construction method of "installing the upper steel structure first and then tensioning the radial cables to improve the overall rigidity of the structure", this application adopts the construction method of "tensioning the radial and circumferential cables first, and then installing the upper steel structure". The overall tensioning sequence is the reverse of the traditional spoke-type cable-supported roof construction method, which can achieve the effect of not needing to set up a formwork, effectively reducing construction costs, and avoiding the drawbacks of temporary construction support formwork and concrete structure intersecting operations.

[0055] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A spoke-type cable-supported grid roof, characterized in that, It includes an upper steel structure (1), an outermost pressure ring beam (2), radial cables (3) and circumferential cables (4), the radial cables (3) and circumferential cables (4) are cross-connected to form a cable net system, the cable net system is connected to the upper steel structure (1) and the outermost pressure ring beam (2), and is configured to stabilize the upper steel structure (1); The connection point between the radial cable (3) and the circumferential cable (4) has a design elevation; The design elevation is achieved during construction by using the self-weight of the upper steel structure (1) to lower the traction elevation obtained by the anti-tensioning operation at the connection point of the radial cable (3) and the circumferential cable (4).

2. The spoke-type cable-supported grid roof according to claim 1, characterized in that, The upper steel structure (1) includes radial steel beams (6), cantilever beams (7), central pressure ring beams (8), innermost ring beams (10), outer struts (11), and inner struts (12) at the cantilever end.

3. The spoke-type cable-supported grid roof according to claim 2, characterized in that, The outermost pressure ring beam (2), the middle pressure ring beam (8), the innermost ring beam (10), and the circumferential cable (4) are all circular ring structures. The middle pressure ring beam (8) is located between the outermost pressure ring beam (2) and the innermost ring beam (10). The circumferential cable (4) is located below the cantilever beam (7). Furthermore, the cantilever beam (7) and the circumferential cable (4) are connected by an outer support rod (11) and an inner support rod (12) at the cantilever end. Multiple radial steel beams (6) are provided between the outermost pressure ring beam (2) and the middle pressure ring beam (8). Multiple cantilever beams (7) are provided between the middle pressure ring beam (8) and the innermost ring beam (10).

4. The spoke-type cable-supported grid roof according to claim 3, characterized in that, The outermost pressure ring beam (2) forms a first ring, the middle pressure ring beam (8) forms a second ring, and the innermost ring beam (10) forms a third ring. The circumferential cable (4) has a fourth ring diameter, and the diameter of the first ring > the diameter of the second ring > the diameter of the fourth ring > the diameter of the third ring.

5. The spoke-type cable-supported grid roof according to claim 4, characterized in that, The upper steel structure (1) also includes a circumferential connecting beam (9), which is a circular ring structure.

6. The spoke-type cable-supported grid roof according to claim 5, characterized in that, The circumferential connecting beam (9) is arranged in a concentric circle between the outermost pressure ring beam (2) and the middle pressure ring beam (8), and is connected to the radial steel beam (6); and / or, is arranged between the middle pressure ring beam (8) and the innermost ring beam (10), and is connected to the cantilever beam (7).

7. The spoke-type cable-supported grid roof according to claim 3, characterized in that, The upper steel structure (1) also includes a radial steel beam support rod (13), which is connected between the radial cable (3) and the radial steel beam (6) and is configured to support the radial steel beam (6) in an axial manner.

8. The spoke-type cable-supported grid roof according to claim 7, characterized in that, The radial steel beams (6) are multiple in number and are arranged vertically in parallel.

9. The spoke-type cable-supported grid roof according to claim 3, characterized in that, The connection point between the first end of the radial cable (3), the first end of the radial steel beam (6), and the outermost pressure ring beam (2) is the first node; The connection point between the second end of the radial cable (3), the first end of the outer support rod (11), the first end of the inner support rod (12) at the cantilever end and the circumferential cable (4) is the second node; The connection point between the second end of the radial steel beam (6), the second end of the outer support rod (11), the first end of the cantilever beam (7), and the central pressure ring beam (8) is the third node; the connection point between the second end of the inner support rod (12) of the cantilever end and the cantilever beam (7) is the fourth node; The connection point between the second end of the cantilever beam (7) and the innermost ring beam (10) is the fifth node, which does not coincide with the fourth node, so that the innermost ring beam (10) is in a cantilever state.

10. The spoke-type cable-supported grid roof according to claim 7, characterized in that, The outer strut (11), the inner strut at the cantilever end (12), the radial cable (3), the radial steel beam (6), the cantilever beam (7), and the radial steel beam support rod (13) are arranged in groups as supporting structural units. All components of each supporting structural unit are located in the same vertical plane. Multiple supporting structural units are evenly and symmetrically arranged on a circle with the center of the roof as the center. All supporting structural units together form a stable roof structure through the outermost pressure ring beam (2), the middle pressure ring beam (8), the innermost ring beam (10), and the circumferential cable (4).

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