Construction method of stadium canopy steel structure

Abstract

This invention provides a construction method for the steel structure of a stadium canopy. The steel canopy is divided into a roof canopy and a facade canopy. The roof canopy is further divided into n hoisting structural units and n intermediate closure units. Each hoisting structural unit is further divided into a balancing truss section, an inner ring truss section, and a canopy truss section. After the main concrete structure is completed, construction of the facade canopy begins. Temporary support frames are simultaneously installed on the outer and inner sides of the stadium's grandstand structure. The balancing truss section, the canopy truss section, and the inner ring truss section are all installed using a monolithic hoisting method, while the facade canopy and intermediate closure units are installed using a high-altitude assembly method. Lifting equipment is used to fill in the gaps between the intermediate closure units and the hoisting structural units, completing the construction. This invention offers advantages such as simple and convenient construction, significantly reduced high-altitude work, improved construction efficiency and safety, and guaranteed construction quality.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a construction method for a steel structure canopy of a sports stadium. Background Technology

[0002] With the diversification of social economy and the increasing scale and diversity of cities, especially elliptical stadium buildings, the application of canopy steel structure roofs is becoming more and more common, especially curved cantilever canopy steel structures. The canopy steel structure usually includes multiple arc-shaped columns set on the outer ring of the canopy, radial cantilever trusses connected to the arc-shaped columns, and circumferential trusses set on the inner ring of the canopy. The circumferential trusses are connected between the multiple radial cantilever trusses, and the inner side of the canopy is cast to form a grandstand.

[0003] Currently, common construction methods for installing steel canopies in sports stadiums include high-altitude assembly, strip or block installation, high-altitude sliding, overall hoisting, overall lifting, and overall jacking. Among these, high-altitude assembly refers to directly assembling small units or individual components (single rods and nodes) at the designed location. This method is suitable for various types of space frames with bolted connections, especially in situations where lifting is difficult. Its key construction points are determining a reasonable assembly sequence and controlling the elevation and axis positions. Overall hoisting refers to assembling the space frame on the ground and then using lifting equipment to hoist it into place. Welding of the overall space frame is carried out on the ground, better ensuring construction quality. This method is suitable for various types of space frames, and during hoisting, it can be moved or rotated into place at high altitude.

[0004] The existing construction of canopy steel structures involves setting up ring-shaped jigs according to the number of elliptical circumferential trusses in the design drawings to serve as support points for assembling and welding steel structural components. Traditional construction methods involve first assembling the circumferential truss steel structure and then assembling the radial steel chords, or first assembling the radial chords and then constructing the circumferential truss steel structure. Although this method can complete such canopy steel structures, the overall construction is cumbersome, the construction period is long, the assembly accuracy is low, the quality of steel structure construction is difficult to guarantee, there is a lot of high-altitude construction work, the safety controllability is poor, and a lot of materials and labor will be wasted. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a construction method for steel structures of stadium canopies. This method solves the problems of cumbersome overall construction, long construction period, low assembly accuracy, difficulty in ensuring the quality of steel structure construction, excessive high-altitude construction work, poor safety controllability, and waste of materials and labor in existing technologies.

[0006] According to an embodiment of the present invention, a construction method for a steel structure of a stadium canopy includes:

[0007] The steel canopy is divided into a roof canopy and a facade canopy. The roof canopy is further divided into n hoisting structural units and n intermediate closure units. There is an intermediate closure unit between every two adjacent hoisting structural units. The hoisting structural units are further divided into a balancing truss structural section near the facade canopy, an inner ring truss structural section away from the facade canopy, and a canopy area truss structural section connecting the balancing truss structural section and the inner ring truss structural section. The balancing truss structural section, the canopy area truss structural section, and the inner ring truss structural section are all installed using the integral hoisting method. The facade canopy and the intermediate closure units are all installed using the high-altitude assembly method.

[0008] After the main concrete structure of the stadium was completed, the facade canopy was constructed. At the same time, temporary support frames were installed on the outside and inside of the grandstand structure. The balance zone truss structure section, the canopy area truss structure section and the inner ring truss structure section were assembled on the ground.

[0009] The truss structure section of the balance zone is lifted to the design elevation using lifting equipment and installed on the frame columns of the facade canopy and the grandstand structure.

[0010] The canopy area truss structure section is lifted to the design elevation and placed on the temporary support frame inside the grandstand structure, and then the canopy area truss structure section is connected to the balance area truss structure section.

[0011] The inner ring truss structure section was raised to the design elevation and connected to the canopy area truss structure section to complete the construction of the hoisting structure unit;

[0012] The intermediate closure unit was installed using lifting equipment, and the rods between the intermediate closure unit and the hoisting structure unit were then fitted and installed to complete the construction of the stadium's steel canopy.

[0013] Furthermore, based on the structural form of the roof canopy, the division of the hoisting structural units is symmetrical when dividing the roof canopy, and each hoisting structural unit is a geometrically invariant system and stable in the plane. The intermediate closing unit contains at most one radial truss, and the intermediate closing unit needs to be reinforced with members.

[0014] Furthermore, the radial truss of the intermediate closure unit is divided into a balance zone radial truss, a canopy zone radial truss, and an inner ring radial truss. The division of the radial truss of the intermediate structural unit corresponds to the division of the hoisting structural unit, and the construction steps of the radial truss of the intermediate structural unit correspond to the construction steps of the hoisting structural unit. After the radial truss of the intermediate structural unit is installed, lifting equipment is used to fill in the members between the radial truss of the intermediate closure unit and the hoisting structural unit.

[0015] Furthermore, the temporary support frame on the inner side of the grandstand structure corresponds to each radial truss of the roof canopy, and it is located at the end of the radial truss in the canopy area of ​​the radial truss that is away from the radial truss in the balance area.

[0016] Furthermore, a diagonal strut is connected between the middle of the temporary support frame on the inner side of the grandstand and the grandstand structure, and a guy rope is tied between the upper part of the temporary support on the inner side of the grandstand and the grandstand structure.

[0017] Furthermore, during the construction of the stadium's main concrete structure, rigid steel columns were used as the frame columns for the grandstand structure, and embedded parts were pre-embedded at the top of the rigid steel columns.

[0018] Furthermore, during the construction of the facade canopy, diagonal tie rods are installed between the inner side of the facade canopy and the rigid steel columns of the grandstand structure, with the positions of the diagonal tie rods corresponding to each of the curved columns of the facade canopy.

[0019] Furthermore, the temporary support frame on the outer side of the grandstand structure is positioned corresponding to each of the arc-shaped columns of the facade canopy, and it is supported at one-third of the vertical distance from the top of the arc-shaped column to the bottom of the arc-shaped column.

[0020] Compared with existing technologies, the present invention has the following advantages: The construction method of the stadium canopy steel structure of the present invention assembles the balance zone truss structure section, the canopy area truss structure section, and the inner ring truss structure section on the ground before hoisting, ensuring the assembly accuracy and welding quality of the steel structure, reducing rework and rectification of quality problems, and better guaranteeing construction quality; the present invention is simple and convenient to construct, significantly reducing the number of high-altitude steel structure assemblies, reducing the probability of high-altitude work safety accidents, and lowering safety risks; the present invention can install multiple hoisting structure units simultaneously. After the hoisting structure units are completed, intermediate merging units are then installed to connect the multiple hoisting structure units, greatly accelerating the construction progress, shortening the construction cycle, and simultaneously ensuring construction quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the steel canopy structure of the present invention.

[0022] Figure 2 for Figure 1 Side view.

[0023] Figure 3 for Figure 1 The main view.

[0024] Figure 4 This is a schematic diagram of the circumferential truss structure of the present invention.

[0025] Figure 5This is a schematic diagram showing the partial distribution of the hoisting structure unit and the intermediate closing unit on the roof canopy of the present invention.

[0026] Figure 6 This is a schematic diagram of the installation structure of the hoisting structure unit and the intermediate closing unit of the present invention.

[0027] Figure 7 for Figure 1 A partial structural diagram.

[0028] Figure 8 This is a cross-sectional schematic diagram of the hoisting structure unit of the present invention during construction.

[0029] Figure 9 This is a schematic diagram of the hoisting structure unit of the present invention.

[0030] Figure 10 This is a schematic diagram of the radial truss structure of the present invention.

[0031] In the above attached diagrams: 1. Roof canopy; 2. Facade canopy; 21. Arched column; 3. Hoisting structural unit; 31. Balance zone truss structure section; 32. Canopy area truss structure section; 33. Inner ring truss structure section; 4. Intermediate closing unit; 5. Radial truss; 51. Balance zone radial truss; 52. Canopy area radial truss; 53. Inner ring radial truss; 6. Grandstand structure; 7. Stiff steel column; 8. Outer ring support frame; 9. Inner ring support frame; 10. Diagonal tie rod; 11. Diagonal strut; 12. Guy rope. Detailed Implementation

[0032] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Please see the appendix Figure 1-10 This invention provides a construction method for a steel structure canopy of a sports stadium, comprising the following steps:

[0034] S1, based on the structural characteristics and stress patterns of the steel canopy, the steel canopy is divided into roof canopy 1 and facade canopy 2, such as... Figure 1 , Figure 3 As shown; the roof canopy 1 is divided into 8 hoisting structural units 3 and 8 intermediate closure units 4. The 8 hoisting structural units 3 and 8 intermediate closure units 4 are distributed alternately, so that there is an intermediate closure unit 4 between every two adjacent hoisting structural units 3. At the same time, the divided hoisting structural units 3 should be as symmetrical as possible, and ensure that the hoisting structural units 3 are geometrically invariant and stable in the plane. The hoisting structural units 3 are numbered sequentially in a counterclockwise direction as unit 1, unit 2, etc., until they are divided into 8 units. At the same time, the intermediate closure units 4 are numbered sequentially in a counterclockwise direction as unit 1, unit 2, etc., until they are divided into 8 units. Figure 2 , Figure 5 , Figure 6 As shown. In this embodiment, the intermediate closing unit 4 includes a radial truss 5.

[0035] S2, as Figure 9 As shown, according to the defined hoisting structure unit 3, the hoisting structure unit 3 is divided into a balance zone truss structure section 31 close to the facade canopy 2, an inner ring truss structure section 33 far from the facade canopy 2, and a canopy zone truss structure section 32 connecting the balance zone truss structure section 31 and the inner ring truss structure section 33. The balance zone truss structure section 31, the canopy zone truss structure section 32 and the inner ring truss structure section 33 are all installed using the overall hoisting method.

[0036] S3, as Figure 10 As shown, according to the defined intermediate closure unit 4, the radial truss 5 of the intermediate closure unit 4 is divided into the corresponding hoisting structure unit 3 into the balance zone radial truss 51, the canopy zone radial truss 52 and the inner ring radial truss 53. The balance zone radial truss 51, the canopy zone radial truss 52 and the inner ring radial truss 53 are all installed using the high-altitude bulk assembly method.

[0037] S4, such as Figure 8 As shown, during the construction of the main concrete structure of the stadium, stiff steel columns 7 are used as the frame columns of the outer top of the grandstand structure 6. Embedded parts are pre-embedded in the top of the stiff steel columns 7, and the embedded parts are connected to the cross steel frame of the stiff steel columns 7 and used to weld and fix to the hinge support of the truss structure section 31 of the balance zone. After the construction of the main concrete structure of the stadium is completed, the facade canopy 2 is constructed, and temporary support frames are installed on the outer and inner sides of the grandstand structure 6 inside the stadium. In this embodiment, the facade canopy 2 includes multiple arc-shaped columns 21 evenly arranged around the outer ring of the building. Since the cross section of the arc-shaped columns 21 is large, it is not convenient to use a tower crane for installation. Therefore, after the segmented arc-shaped columns 21 are transported to the site, they are assembled using a 50t truck crane, and then the arc-shaped columns 21 are installed using a crawler crane to save construction time and improve the utilization rate of machinery.

[0038] S5, such as Figure 8 As shown, in step S4, after each arc-shaped column 21 of the facade canopy 2 is installed in place, an outer ring support frame 8 is temporarily supported on the outside of the arc-shaped column 21 at 1 / 3 below the arc top position, and is fixed by a rigid diagonal tie rod 10 to the stiff steel column 7 to balance the overturning moment of the arc-shaped column 21.

[0039] S6, such as Figure 8As shown, in step S4, an inner ring support frame 9 is installed on the inner side of the grandstand structure 6 in the field to temporarily support the canopy area truss structure section 32 or the canopy area radial truss 52. The position of the inner ring support frame 9 corresponds to each radial truss 5 of the roof canopy 1, and it is set at one end of the canopy area radial truss 52 of the radial truss 5 away from the balance area radial truss 51.

[0040] S7, such as Figure 8 As shown, after each inner ring support frame 9 is installed, an oblique strut 11 is connected between the middle of the inner ring support frame 9 and the grandstand structure 6, and a guy rope 12 is tied between the upper part of the inner ring support frame 9 and the grandstand structure 6.

[0041] S8, using an assembly jig, the truss structure segment 31 of the balancing zone is assembled on the ground. Suitable lifting points are selected on the assembled truss structure segment 31, and lifting point devices are installed. A crawler crane is connected to the lifting point devices to perform a complete lifting operation, raising the truss structure segment 31 to the design elevation and installing it on the stiffened steel columns 7 of the facade canopy 2 and grandstand structure 6. In this embodiment, as... Figure 4 As shown, the steel canopy has five circumferential trusses, which are numbered from the inside out as HHJ1, HHJ2, HHJ3, HHJ4, and HHJ5. The balance zone truss structure section 31 consists of a balance zone radial truss 51 of multiple radial trusses 5 and a circumferential truss connecting two adjacent balance zone radial trusses 51. The circumferential truss in this section corresponds to the positions of HHJ4 and HHJ5.

[0042] S9. Using the assembly jig, the canopy area truss structure section 32 is assembled on the ground. Suitable lifting points are selected on the assembled canopy area truss structure section 32, and lifting point devices are installed. A crawler crane is connected to the lifting point devices for overall hoisting operations, lifting the canopy area truss structure section 32 to the design elevation and placing it on the inner ring support jig 9. Under the support of the crawler crane and the inner ring support jig 9, the canopy area truss structure section 32 is then connected to the balance zone truss structure section 31. In this embodiment, the canopy truss structure section consists of multiple radial trusses 52 of the canopy area and a circumferential truss connecting adjacent canopy area radial trusses 52. The circumferential truss in this part corresponds to the positions of HHJ2 and HHJ3.

[0043] S10, the inner ring truss structure section 33 is assembled on the ground, lifted to the design elevation, and connected to the canopy area truss structure section 32, completing the construction of the hoisting structure unit 3. In this embodiment, the inner ring truss structure section 33 consists of multiple radial trusses 5, inner ring radial trusses 53, and circumferential trusses connecting adjacent inner ring radial trusses 53. The circumferential truss in this part corresponds to the location of HHJ1.

[0044] S11, after the hoisting structure unit 3 is installed in place, install the intermediate closing unit 4 in the space reserved between two adjacent hoisting structure units 3, hoist the radial truss 51 of the balance zone to the design elevation and install it on the arc-shaped column 21 and the stiffened steel column 7, then hoist the radial truss 52 of the canopy area and the inner ring radial truss 53 in sequence and install them in place, then hoist the circumferential truss of the intermediate closing unit 4 and connect it with the hoisting structure unit 3, and add additional tie rods (such as...) on the hoisting structure unit 3. Figure 6 As shown in the figure, a stable intermediate closure unit 4 is formed to enhance the connection stability between the intermediate closure unit 4 and the hoisting structure unit 3, thus completing the construction of the stadium steel canopy. In this embodiment, when the connection accuracy between the intermediate closure unit 4 and the hoisting structure unit 3 can be guaranteed, the circumferential truss of the intermediate closure unit 4 can be assembled on the ground first, and then hoisted. For example, the circumferential truss corresponding to HHJ1 can be assembled into a small unit on site and then hoisted. According to the characteristics of the canopy steel structure, the circumferential trusses corresponding to HHJ2, HHJ3, and HHJ4 can be assembled into a K-shape on site, that is, the upper chord of the circumferential truss, the two lower chords, and the tie rods can be assembled into a K-shaped structure before hoisting. This further reduces the number of high-altitude welding and assembly operations, ensuring quality and saving costs. The circumferential truss corresponding to HHJ5 is hoisted in pieces. The circumferential trusses corresponding to HHJ1, HHJ2, and HHJ3 are hoisted by crawler cranes in the inner field, with the construction sequence being: HHJ3→HHJ2→HHJ; the circumferential trusses corresponding to HHJ4 and HHJ5 are hoisted by crawler cranes in the outer field, with the construction sequence being: HHJ5→HHJ4. This approach accelerates the construction progress while ensuring construction quality.

[0045] The construction method of the stadium canopy steel structure of the present invention uses stiff steel columns 7 on the top of the outer perimeter of the grandstand structure 6. These columns can not only bear the load of the canopy steel structure, but also bear the tension of the diagonal tie rods 10 when the arc-shaped column 21 is installed. This improves the support stability, prevents the outer ring support frame 8 from overturning due to excessive force, and ensures the accuracy of the butt welding between the balance zone truss structure section 31 and the arc-shaped column 21.

[0046] The construction method of the stadium canopy steel structure of the present invention significantly reduces the amount of high-altitude work, significantly reduces the number of hoisting operations of lifting equipment, improves construction efficiency and construction safety factor, and also ensures construction quality by assembling the truss structure section 31 of the balance zone, the truss structure section 32 of the canopy area, and the inner ring truss structure section 33 on the ground.

[0047] The construction method of the steel structure of the stadium canopy of the present invention divides the roof canopy 1 into 8 hoisting structural units 3 and 8 intermediate closure units 4. The 8 hoisting structural units 3 and 8 intermediate closure units 4 are distributed in an alternating manner. Since the installation space of the intermediate structural units is reserved between two adjacent hoisting structural units 3, multiple hoisting structural units 3 can be constructed symmetrically at the same time, which greatly speeds up the construction progress. In addition, the intermediate closure units 4 are installed by high-altitude bulk assembly method, which ensures the connection accuracy between the intermediate closure units 4 and the hoisting structural units 3, and further ensures the overall construction quality.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A construction method for a steel structure canopy of a sports stadium, characterized in that, include: The steel canopy is divided into a roof canopy (1) and a facade canopy (2). The roof canopy (1) is divided into n hoisting structural units (3) and n intermediate closure units (4). There is an intermediate closure unit (4) between each two adjacent hoisting structural units (3). The hoisting structural unit (3) is divided into a balance zone truss structural section (31) close to the facade canopy (2), an inner ring truss structural section (33) far from the facade canopy (2), and a canopy zone truss structural section (32) connecting the balance zone truss structural section (31) and the inner ring truss structural section (33). The balance zone truss structural section (31), the canopy zone truss structural section (32) and the inner ring truss structural section (33) are all installed by the overall hoisting method. The facade canopy (2) and the intermediate closure units (4) are all installed by the high-altitude bulk assembly method. After the main concrete structure of the stadium is completed, the facade canopy (2) is constructed. At the same time, temporary support frames are installed on the outside and inside of the grandstand structure (6) in the stadium. The balance zone truss structure section (31), the canopy area truss structure section (32) and the inner ring truss structure section (33) are assembled on the ground. The truss structure section (31) of the balance zone is lifted to the design elevation using lifting equipment and installed on the frame columns of the facade canopy (2) and the grandstand structure (6); The canopy area truss structure section (32) is raised to the design elevation and placed on the temporary support frame inside the grandstand structure (6), and then the canopy area truss structure section (32) is connected to the balance area truss structure section (31). The inner ring truss structure section (33) is raised to the design elevation and connected to the canopy area truss structure section (32) to complete the construction of the hoisting structure unit (3); The intermediate closure unit (4) was installed using lifting equipment, and the rods between the intermediate closure unit (4) and the hoisting structure unit (3) were fitted and installed to complete the construction of the steel canopy of the stadium. According to the structural form of the roof canopy (1), when dividing the roof canopy (1), the division of the hoisting structure unit (3) is symmetrical, and each hoisting structure unit (3) is a geometrically invariant system and stable in the plane. The intermediate closing unit (4) contains at most one radial truss (5), and the intermediate closing unit (4) needs to be reinforced with members. The radial truss (5) of the intermediate closure unit (4) is divided into the radial truss (51) of the balance zone, the radial truss (52) of the canopy zone, and the radial truss (53) of the inner ring. The division of the radial truss (5) of the intermediate closure unit (4) corresponds to the division of the hoisting structure unit (3), and the construction steps of the radial truss (5) of the intermediate structure unit correspond to the construction steps of the hoisting structure unit (3). After the radial truss (5) of the intermediate structure unit is installed, the members between the radial truss (5) of the intermediate closure unit (4) and the hoisting structure unit (3) are installed by using lifting equipment.

2. The construction method of a steel structure for a stadium canopy as described in claim 1, characterized in that: The temporary support frame on the inner side of the grandstand structure (6) corresponds to each radial truss (5) of the roof canopy (1), and it is located at the end of the canopy area radial truss (52) of the radial truss (5) away from the balance area radial truss (51).

3. The construction method of a steel structure for a stadium canopy as described in claim 1, characterized in that: An inclined strut (11) is connected between the middle part of the temporary support frame on the inner side of the grandstand and the grandstand structure (6), and a guy rope (12) is tied between the upper part of the temporary support on the inner side of the grandstand structure (6) and the grandstand structure (6).

4. The construction method of a steel structure for a stadium canopy as described in claim 1, characterized in that: During the construction of the main concrete structure of the stadium, rigid steel columns (7) are used as the frame columns of the grandstand structure (6), and embedded parts are pre-embedded on the top of the rigid steel columns (7).

5. The construction method of a steel structure for a stadium canopy as described in claim 4, characterized in that: During the construction of the facade canopy (2), diagonal bracing rods (10) are installed between the inner side of the facade canopy (2) and the stiff steel columns (7) of the grandstand structure (6). The position of the diagonal bracing rods (10) corresponds to each arc-shaped column (21) of the facade canopy (2).

6. The construction method of a steel structure for a stadium canopy as described in claim 1, characterized in that: The temporary support frame on the outside of the grandstand structure (6) is positioned corresponding to each of the arc-shaped columns (21) of the facade canopy (2), and its support frame is supported at one-third of the vertical distance from the top of the arc of the arc-shaped column (21) to the bottom of the arc-shaped column (21).

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