Ring-shaped roof structure system of stadium with rigid outside and flexible inside and construction method of ring-shaped roof structure system

Abstract

The invention discloses an outer-rigid and inner-flexible stadium annular roof structure system and a construction method thereof. The system comprises an outer rigid structure and an inner flexible structure. The peripheral rigid structure comprises supporting columns, V-shaped supporting pieces and a grid frame. The supporting columns are radially distributed on the outer ring of the annular roof structure around the center of the annular roof structure. The V-shaped supporting pieces correspond to the supporting columns one to one and are located on the inner sides, opposite to the supporting columns, of the roof structure. The grid frame is fixed to the top ends of the supporting columns and the V-shaped supporting pieces. The inner flexible structure comprises an annular cable and a radial cable; the ring cable is arranged on an inner ring of the roof structure; one end of the radial cable is fixed with the V-shaped supporting piece, and the other end is fixed with the ring cable. A giant outer pressing ring form of a traditional cable bearing structure is abandoned, the peripheral rigid structure and the inner surrounding flexible structure are combined, the rigidity of the peripheral rigid structure is used as a support of the flexible structure, the stress mode of the grid frame structure is improved, the rigidity of the inner surrounding cable structure is improved, and the steel consumption of the peripheral rigid structure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and more particularly to an outer-rigid inner-flexible ring roof structure system for a stadium and a construction method thereof. Background Art

[0002] With the booming development of sports architecture, various structural forms of stadium roofs are emerging. Cable structures, known for their lightness and simplicity, are highly favored by architects, especially for large-span stadium roofs. Cable structures rely on their strong tensile force to provide sufficient rigidity to support the entire roof. However, this strong tensile force requires a sufficiently rigid boundary structure.

[0003] Existing cable-supported structures for stadium roofs mostly employ an external compression ring plus cable structure or a cable-supported structure. The external compression ring is a separate component or a giant truss, completely disregarding the stiffness of the surrounding structure. To provide the high stiffness required by the cable structure, the external compression ring components are extremely large, resulting in a significant increase in steel consumption. Even strengthening measures such as increasing the steel strength grade or filling the interior with concrete have not been able to significantly reduce component size and steel consumption.

[0004] Therefore, how to provide a stadium roof structure system that can improve the stress mode of the grid structure, reduce the amount of steel used in the steel structure of the external pressure ring, and increase the stiffness of the cable-supported structure is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] In view of this, the present invention provides a ring-shaped roof structure system for a stadium with a rigid exterior and a flexible interior, and a construction method thereof. The roof is divided into an outer periphery and a core part. The core part is a large column-free cantilevered space above the stadium stands, which adopts a flexible structure. The public activity area behind the outer periphery stands adopts a rigid structure in the form of a single-layer grid or a spatial grid. The outer rigid structure of the roof and the internal flexible structure are connected, and the rigidity of the outer structure is fully utilized as a supporting condition for the flexible structure. The huge external pressure ring form of the traditional cable-supported structure is abandoned, which not only improves the stress mode of the grid structure, reduces the steel consumption of the steel structure of the external pressure ring, but also improves the rigidity of the cable-supported structure.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A ring-shaped roof structure system for a stadium with a rigid exterior and flexible interior, comprising an outer rigid structure and an inner flexible structure;

[0008] The peripheral rigid structure includes support columns, V-shaped support members, and a grid frame; a plurality of the support columns are radially distributed on the outer ring of the annular roof structure from the center thereof; a plurality of the V-shaped support members are arranged one-to-one corresponding to the plurality of support columns and are located on the inner side of the roof structure relative to the support columns; the grid frame is fixed to the top ends of the support columns and the V-shaped support members;

[0009] The inner flexible structure includes a ring rope and a radial rope; the ring rope is arranged on the inner ring of the roof structure; one end of the radial rope is fixed to the V-shaped support member, and the other end is fixed to the ring rope.

[0010] The beneficial effect of the technical solution of the present invention is that it utilizes a large-scale grid structure on the periphery as a broad external pressure ring, and utilizes the huge rigidity within the plane of the grid structure as the support condition of the flexible structure, thereby improving the rigidity of the cable-supported structure; reducing the component size and steel consumption of the traditional form of pressure ring, which is more conducive to the beauty of the architectural effect.

[0011] Preferably, an inter-column support rod is fixed between two adjacent V-shaped support members. The support rod is used to connect multiple V-shaped support members into a whole, and the V-shaped support members are used as support nodes for the outer rigid structure and the inner flexible structure, making the structure more stable.

[0012] Preferably, one end of the inter-column support rod is fixed to the lower end of the V-shaped support member, and the other end is fixed to the upper end of the support rod of the adjacent V-shaped support member, thereby ensuring installation space for the radial cable and the grid frame.

[0013] Preferably, the openings of the V-shaped support members are arranged along the circumferential direction of the roof.

[0014] Preferably, the lattice frame comprises three annular support beams and a cross grid. The three annular support beams are coaxially arranged and respectively fixed to the upper ends of the two supporting rods of the plurality of support columns and the plurality of V-shaped support members. The cross grid is fixed within the annular cavity formed by the three annular support beams. The outer lattice frame components bear both vertical loads and axial tension, forming tension-bending members. This improves the stress pattern of the lattice frame structure and provides sufficient rigidity for the inner flexible structure.

[0015] Preferably, the inner flexible structure further includes radial rods and tie rods; one end of the radial rod is fixed to the annular support beam at the top of the V-shaped support member, and the other end extends along the center of the roof structure and is located above the radial cable; one end of the tie rod is fixed to the radial rod, and the other end is fixed to the radial cable. The radial rods and tie rods are used to tie the radial cable, ensuring the accuracy of the radial cable elevation.

[0016] Preferably, the inner flexible structure further comprises a plurality of ring rods, the plurality of ring rods being coaxially arranged in descending diameter and fixed to the plurality of radial rods; a diagonal brace is provided between the end of the radial cable away from the V-shaped support member and the innermost ring rod. The ring rods connect the plurality of radial rods to ensure their rigidity; the diagonal brace connects the radial cable and the innermost ring rod to ensure the overall stability of the inner flexible structure.

[0017] Preferably, a plurality of X-shaped rods are fixed between the rod walls of two adjacent radial rods to divide the inner flexible structure into a plurality of sector-shaped areas. The X-shaped rods improve the overall stability of the inner flexible structure.

[0018] Preferably, the radial rods and the radial cables are arranged in parallel and one end thereof away from the V-shaped support member extends downward along the center of the roof structure, thereby improving the aesthetics of the roof structure.

[0019] The present invention also provides a method for constructing a rigid-outer-flexible-inner stadium roof structure. The method for constructing the rigid-outer-flexible-inner stadium annular roof structure system in the above technical solution includes the following steps:

[0020] S1. Install support columns and V-shaped supports;

[0021] S2, install the grid frame;

[0022] S3, radial cable and ring cable tensioning and lifting;

[0023] S4. Install connecting rods.

[0024] The beneficial effect of the above technical solution is that the outer rigid structure is constructed first, and then the inner flexible structure is tensioned, thereby ensuring that the rigidity of the outer rigid structure serves as a supporting condition for the inner flexible structure, effectively ensuring that the outer rigid structure and the inner flexible structure are coordinated in force.

[0025] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a ring-shaped roof structure system for a stadium with rigid exterior and flexible interior and a construction method thereof, which abandons the giant external pressure ring form of the traditional cable-supported structure, combines the outer rigid structure with the inner flexible structure, and fully utilizes the rigidity of the outer rigid structure as a support condition for the flexible structure, improves the force mode of the grid frame structure, enhances the rigidity of the inner cable structure, and reduces the amount of steel used in the outer rigid structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the roof structure system provided by the present invention;

[0028] Figure 2 A schematic diagram of the peripheral rigid structure provided by the present invention;

[0029] Figure 3 A top view of the roof structure system provided by the present invention;

[0030] Figure 4 A cross-sectional view of the roof structure system provided by the present invention;

[0031] Figure 5 Schematic diagram of different stress states of the roof structure provided by the present invention.

[0032] in,

[0033] 1- peripheral rigid structure; 11- support column; 12- V-shaped support member; 13- grid frame; 14- inter-column support rod;

[0034] 2-inner flexible structure; 21-radial rod; 22-annular rod; 23-radial cable; 24-pull rod; 25-diagonal support rod; 26-annular cable. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See attached Figures 1 to 4 The embodiment of the present invention discloses a ring-shaped roof structure system for a stadium with rigid exterior and flexible interior, comprising an outer rigid structure 1 and an inner flexible structure 2;

[0037] The peripheral rigid structure 1 includes support columns 11, V-shaped support members 12, and a grid frame 13; multiple support columns 11 are radially distributed on the outer ring of the annular roof structure from the center thereof; multiple V-shaped support members 12 are arranged one-to-one corresponding to the multiple support columns 11 and are located on the inner side of the roof structure relative to the support columns 11; the grid frame 13 is fixed to the top of the support columns 11 and the V-shaped support members 12;

[0038] The inner flexible structure 2 includes a ring rope 26 and a radial rope 23 ; the ring rope 26 is arranged on the inner ring of the roof structure; one end of the radial rope 23 is fixed to the V-shaped support member 12 , and the other end is fixed to the ring rope 26 .

[0039] like Figure 2As shown in the figure, the support columns and V-shaped support members are arranged radially along the center of the roof structure. The support columns and V-shaped support members correspond one to one. The grid frame is fixed to the upper ends of the support columns and V-shaped support members to form a generalized external pressure ring. The huge rigidity within the plane of the grid structure is used as the support condition of the flexible structure, thereby improving the rigidity of the internal flexible structure; the external pressure ring enables the peripheral grid structure components to bear axial tension while bearing vertical loads, becoming tension-bending components, thereby improving the force mode of the grid structure, while reducing the component size and steel consumption of the traditional pressure ring, which is more conducive to the beauty of the architectural effect.

[0040] In order to further optimize the above technical solution, an inter-column support rod 14 is fixed between two adjacent V-shaped support members 12. The inter-column support rod is used to connect multiple V-shaped support members to ensure the overall stability of the peripheral rigid structure.

[0041] In other specific embodiments, one end of the inter-column support rod 14 is fixed to the lower end of the V-shaped support member 12, and the other end is fixed to the upper end of the support rod of the adjacent V-shaped support member 12. The inter-column support rod connects two adjacent V-shaped support members up and down, and the connection effect is more stable.

[0042] To further optimize the above technical solution, the openings of the V-shaped supports 12 are arranged along the circumference of the roof. The grid frame 13 comprises three annular support beams and a cross grid. The three annular support beams are coaxially arranged and fixed to the upper ends of the multiple support columns 11 and the two supporting rods of the multiple V-shaped supports 12. The cross grid is fixed within the annular cavity formed by the three annular support beams.

[0043] The grid frame is fixed to the upper ends of the support columns and the V-shaped support members through three annular support beams. In order to facilitate installation, the connection between the annular fixing plate and the support columns and the two rods of the V-shaped support member can be connected by a pin.

[0044] In this embodiment, the inner flexible structure 2 further includes radial rods 21 and tie rods 24. One end of the radial rod 21 is fixed to the annular support beam at the top of the V-shaped support member 12, while the other end extends along the center of the roof structure and is located above the radial cable 23. One end of the tie rod 24 is fixed to the radial rod 21, and the other end is fixed to the radial cable 23. The radial rods and tie rods connect the radial cables, ensuring the overall stability of the inner flexible structure.

[0045] In order to further optimize the above technical solution, multiple radial rods form an overall stable structure to ensure the integrity and stability of the inner flexible structure, the inner flexible structure 2 also includes an annular rod 22, and there are multiple annular rods 22. The diameters of the multiple annular rods 22 are coaxially arranged in sequence from large to small and fixed on the multiple radial rods 21; a diagonal support rod 25 is provided between the end of the radial rope 23 away from the V-shaped support member 12 and the innermost annular rod 22.

[0046] In other specific embodiments, in order to further improve the overall stability of the inner flexible structure, a plurality of X-shaped rods are fixed between the opposite rod walls of two adjacent radial rods 21 to divide the inner flexible structure 2 into a plurality of sector-shaped areas.

[0047] In order to further optimize the above technical solution and ensure the overall aesthetic performance of the roof structure, the radial rods 21 and the radial cables 23 are arranged in parallel and one end thereof away from the V-shaped support member 12 extends downward along the center of the roof structure.

[0048] Example 2:

[0049] The embodiment of the present invention discloses a method for constructing a roof structure of a stadium with rigid exterior and flexible interior. The roof structure system in Example 1 is used to construct the roof of a project. The building overview is as follows:

[0050] The roof's projection measures a circle with a diameter of 300m, with an inner opening measuring a circle with a diameter of 50m. The highest point of the roof is less than 60m. The roof is divided into metal roofing and membrane roofing. The metal roof is 50m wide, and the membrane roof is 75m wide.

[0051] The membrane roof, a flexible structure with a cantilever length of 75m, utilizes a spoke-type cable-supported grid structure with 60 radial cables, each supported by six tie rods. The maximum tie rod height is 17.575m, resulting in a span-to-height ratio of 11.4. The radial cables are D110 in diameter and have a breaking force requirement of 12,200 kN. The hoop cables utilize eight D110 cables, each with a breaking force of 12,200 kN.

[0052] The outer metal roof structure, serving as a rigid structure with a maximum span of 40m, utilizes a single-layer cross-grid structure, supported at one end by a circular support beam atop the outer support columns and at the other end by a circular support beam atop the inner V-shaped supports. The top fork of the roof's V-shaped supports is 10m wide and distributed circumferentially around the roof, with each V-shaped support standing approximately 10m tall.

[0053] The radial cables and the radial rods are connected to the annular support beam at the top of the V-shaped support member through a pin shaft.

[0054] The following steps are involved:

[0055] S1. Install support columns and V-shaped supports;

[0056] Install the peripheral support columns and V-shaped supports on the support frame in sequence, including the inter-column support rods connected to the V-shaped supports;

[0057] S2, install the grid frame;

[0058] The cross-grid structure is assembled using peripheral support columns and V-shaped supports to form a rigid structure with peripheral stability;

[0059] S3, radial cable and ring cable tensioning and lifting;

[0060] The radial cables and ring cables are assembled on the ground, using the peripheral rigid structure as support to pull the radial cables and lift the cable net to the designated position;

[0061] S4. Install and tension the tooling rope vertically below the hoop rope so that the hoop rope elevation is at the designed predetermined elevation, and secure the tooling rope;

[0062] S5. Install connecting rods;

[0063] Use large lifting machinery to lift the radial rods, tie rods and ring rods on the upper layer. Ensure the stability of the unit structure during each lifting. At the same time, adjust the pull-down tooling rope to maintain the ring rope at the designed elevation.

[0064] S6. After the components are installed, the tooling cables are basically in a relaxed state. At this time, the tooling cables are removed to complete the installation of the flexible structure.

[0065] In this embodiment, the outer rigid structure is constructed first, and then the flexible structure is tensioned. The rigidity of the outer structure is ensured as a support condition for the flexible structure, so that the outer rigid structure and the inner flexible structure can be effectively coordinated to bear the force.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0067] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ring-shaped roof structure system for a stadium with rigid exterior and flexible interior, characterized in that: It includes an outer rigid structure (1) and an inner flexible structure (2); The peripheral rigid structure (1) comprises support columns (11), V-shaped support members (12) and a grid frame (13); a plurality of the support columns (11) are radially distributed on the outer ring of the annular roof structure with the center thereof; a plurality of the V-shaped support members (12) are arranged one-to-one corresponding to a plurality of the support columns (11) and are located on the inner side of the roof structure relative to the support columns (11); the grid frame (13) is fixed to the top ends of the support columns (11) and the V-shaped support members (12); The inner flexible structure (2) comprises a ring rope (26) and a radial rope (23); the ring rope (26) is arranged on the inner ring of the roof structure; one end of the radial rope (23) is fixed to the V-shaped support member (12), and the other end is fixed to the ring rope (26).

2. The outer rigid and inner flexible stadium annular roof structure system according to claim 1 is characterized in that: An inter-column support rod (14) is fixed between two adjacent V-shaped support members (12).

3. The outer rigid and inner flexible stadium annular roof structure system according to claim 2 is characterized in that: One end of the inter-column support rod (14) is fixed to the lower end of the V-shaped support member (12), and the other end is fixed to the upper end of the support rod of the adjacent V-shaped support member (12).

4. The outer rigid inner flexible stadium annular roof structure system according to claim 1 is characterized in that: The openings of the V-shaped support members (12) are arranged along the circumferential direction of the roof.

5. The outer rigid and inner flexible stadium annular roof structure system according to claim 4 is characterized in that: The grid frame (13) includes three annular support beams and a cross grid, wherein the three annular support beams are coaxially arranged and respectively fixed to the upper ends of two supporting rods of a plurality of the support columns (11) and a plurality of the V-shaped support members (12); and the cross grid is fixed in an annular cavity formed by the three annular support beams.

6. The outer rigid inner flexible stadium annular roof structure system according to claim 5 is characterized in that: The inner flexible structure (2) also includes a radial rod (21) and a pull rod (24); one end of the radial rod (21) is fixed to the annular support beam at the top end of the V-shaped support member (12), and the other end extends along the center of the roof structure and is located above the radial cable (23); one end of the pull rod (24) is fixed to the radial rod (21), and the other end is fixed to the radial cable (23).

7. The outer rigid and inner flexible stadium annular roof structure system according to claim 6 is characterized in that: The inner flexible structure (2) further comprises a ring rod (22), wherein the number of the ring rods (22) is multiple, and the diameters of the multiple ring rods (22) are coaxially arranged in descending order and fixed on the multiple radial rods (21); a diagonal support rod (25) is provided between the end of the radial cable (23) away from the V-shaped support member (12) and the innermost ring rod (22).

8. The outer rigid and inner flexible stadium annular roof structure system according to claim 6 is characterized in that: A plurality of X-shaped rods are fixed between the rod walls of two adjacent radial rods (21) to divide the inner flexible structure (2) into a plurality of sector-shaped areas.

9. The outer rigid inner flexible stadium annular roof structure system according to claim 6 is characterized in that: The radial rods (21) and the radial cables (23) are arranged in parallel and one end thereof away from the V-shaped support member (12) extends downward along the center of the roof structure.

10. A construction method for a stadium roof structure with rigid exterior and flexible interior, characterized in that: The construction of a rigid-outer-and-flexible-inner stadium annular roof structure system according to any one of claims 1 to 9 comprises the following steps: S1. Install support columns and V-shaped supports; S2, install the grid frame; S3, radial cable and ring cable tensioning and lifting; S4. Install connecting rods.

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