A method for installing a new radial ring-shaped cantilever structure in a public venue building.

Abstract

This application relates to a new radial ring-shaped cantilever structure for public venue buildings and its hoisting method, belonging to the field of public building renovation construction technology. The ring-shaped cantilever structure includes cantilever units, circumferential cables, and fixing components. Multiple cantilever units are provided, and the number of fixing components corresponds to the number of cantilever units. Each cantilever unit includes connecting trusses and radial members. The fixing components are fixedly connected to one side of the connecting trusses, and the radial members are connected to the other side of the connecting trusses. The connecting trusses are connected in series to form a closed ring. Each radial member is connected to each connecting truss and extends towards the center of the closed ring formed by the connecting trusses. The ring cable is connected to each radial member. The public building is equipped with damping connectors, the number of which corresponds to the number of fixing components, and these damping connectors are fixedly connected to the fixing components. This application has the effect of reducing the possibility of stress concentration caused by direct welding of the new structure to the existing structure.

Description

Technical Field

[0001] This application relates to the field of public building renovation and construction, and in particular to a method for adding a radial ring cantilever structure to a public venue building and its hoisting. Background Technology

[0002] Currently, many large public venues, such as large stadiums, often require improved or even additional functions after a period of use. For example, they may need to add a canopy or LED lights. To meet these needs, it is often necessary to add related auxiliary structures to the stadium so that the canopy or LED lights can be installed on the new auxiliary structures.

[0003] However, existing radial auxiliary structures are often installed one by one onto the stadium's connecting structure by first erecting temporary supports, and then directly welded to the existing connecting structure. This results in the fixed positions of each individual radial auxiliary structure, which cannot be adjusted. When connecting the individual radial auxiliary structures after the form-finding is completed, stress concentration problems are likely to occur. If there are many connection nodes between the stadium and the auxiliary structure, the stress concentration at multiple connection nodes can easily cause damage to the original connecting structure of the stadium due to the cumulative effect, thus leading to safety accidents. Summary of the Invention

[0004] In order to reduce the possibility of stress concentration caused by direct welding of the radial auxiliary structure to the original structure, in a first aspect, this application provides a new radial ring cantilever structure for public venue buildings.

[0005] This application provides a technical solution for adding a radial ring-shaped cantilever structure to a public venue building, using the following approach:

[0006] It includes cantilever units, circumferential cables, and fasteners. Multiple cantilever units are provided, and the number of fasteners corresponds to the number of cantilever units. Each cantilever unit includes connecting trusses and radial members. The fasteners are fixedly connected to one side of the connecting trusses, and the radial members are connected to the other side of the connecting trusses. Each connecting truss is connected end to end to form a closed loop. Each radial member extends toward the center of the closed loop formed by the connecting trusses. Circumferential cables are connected to each radial member. The public building is equipped with damping connectors in a number corresponding to the number of fasteners, and the damping connectors are fixedly connected to the fasteners.

[0007] By adopting the above technical solution, the cantilever structure to be installed on the public venue building is divided into multiple prefabricated cantilever units, thereby improving the installation efficiency of the cantilever structure. At the same time, all cantilever units are connected to the same circumferential cable, which allows adjacent cantilever units to be squeezed towards the center of the closed ring by tightening the circumferential cable, thus providing a certain degree of rigidity. Compared with the method of connecting cantilever units with steel pipes to obtain connection rigidity, the self-weight is lighter, reducing the load on the public venue building. The fixing components on the cantilever units are fixedly connected to the shock-absorbing connectors on the public venue building, so that the cantilever units are not directly connected to the public venue building. This means that when each cantilever unit is installed on the public venue building, during the form-finding process using the circumferential cable, each cantilever unit still has a certain adjustment space. That is, the shock-absorbing effect of the shock-absorbing connectors reduces the possibility of stress concentration caused by direct welding of the radial auxiliary structure and the original structure.

[0008] Optionally, the connecting truss includes two reinforcing steel pipes and two parallel connecting steel pipes distributed vertically. The upper and lower ends of each reinforcing steel pipe are perpendicularly connected to the two connecting steel pipes respectively. One end of the connecting steel pipe is provided with a plug-in part, and the other end of the connecting steel pipe is provided with a plug-in groove. The connecting steel pipes on two adjacent connecting trusses can be connected by plug-in fitting.

[0009] By adopting the above technical solution, the connecting truss includes two parallel connecting steel pipes and two reinforcing steel pipes. The two reinforcing steel pipes are located between the two connecting steel pipes, and the upper and lower ends of each reinforcing steel pipe are fixedly connected to the two connecting steel pipes respectively. The two reinforcing steel pipes are used to increase the connection strength between the two connecting steel pipes, thereby increasing the rigidity of the entire connecting frame. The two ends of the connecting steel pipes are respectively provided with plug-in parts and plug-in slots, so that the connecting steel pipes on two adjacent connecting trusses can be initially fixed by plug-in cooperation, which improves the assembly efficiency between two adjacent connecting frames.

[0010] Optionally, the radial component includes a supporting steel pipe and a fixed steel pipe. One end of the fixed steel pipe is fixedly connected to the connecting steel pipe located below, and the other end of the fixed steel pipe is fixedly connected to the supporting steel pipe. The end of the supporting steel pipe away from the fixed steel pipe is fixedly connected to the connecting steel pipe located above. An annular cable is connected at the connection between the supporting steel pipe and the fixed steel pipe.

[0011] By adopting the above technical solution, one end of the supporting steel pipe is connected to the connecting steel pipe located at the upper end of the reinforcing steel pipe, while the other end of the supporting steel pipe is fixedly connected to one end of the fixed steel pipe, and the other end of the fixed steel pipe is fixedly connected to the connecting steel pipe located at the lower end of the reinforcing steel pipe. This allows the supporting steel pipe to be fixed on the connecting truss. The fixed steel pipe is used to increase the connection stability of the supporting steel pipe on the connecting truss. The ring cable is connected at the connection between the supporting steel pipe and the fixed steel pipe, so that the supporting steel pipe and the connecting steel pipe can be pulled by tensioning the ring cable, thereby enabling each connecting truss to have a certain rigidity after being plugged in.

[0012] Optionally, the fixed steel pipe is also equipped with a figure-eight brace. The larger opening of the figure-eight brace is connected to both ends of the fixed steel pipe. The position of the figure-eight brace away from the fixed steel pipe is connected to a stay cable. One end of the stay cable is connected to the figure-eight brace, and the other end of the stay cable is connected to the public building.

[0013] By adopting the above technical solution, the load-bearing capacity between the fixed steel pipe and the supporting steel pipe is further increased by setting up figure-eight braces and inclined cables on the fixed steel pipe. At the same time, the load-bearing limit of the public building is increased by connecting the inclined cables with the public building.

[0014] Optionally, the radial component includes a radial cable, one end of which is connected to a connecting steel pipe located at the upper end of the reinforcing steel pipe, and the other end of which is connected to a connecting steel pipe located at the lower end of the reinforcing steel pipe after being wound around a circumferential cable. The circumferential cable is used to pull the radial cable toward the center of the closed ring.

[0015] By adopting the above technical solution, one end of the radial cable is connected to the connecting steel pipe located at the upper end of the reinforcing steel pipe, while the lower end of the radial cable is connected to the connecting steel pipe located at the lower end of the reinforcing steel pipe. The annular cable is threaded through the side of the cable close to the connecting steel pipe. When the annular cable is tensioned, the radial cable is also pulled and its shape is fixed. This makes the annular cable play a role in shape finding in addition to its pulling role. At the same time, using the radial cable to replace the supporting steel pipe and the fixed steel pipe makes the weight of the entire cantilever unit lighter, so that it can be installed on a larger scale within the load-bearing limit of the public venue building, thereby achieving a more obvious modification effect.

[0016] Optionally, the fastener includes a connecting part and a limiting part, the connecting part and the limiting part are fixedly connected, the side of the connecting part away from the limiting part is fixedly connected to the connecting truss, and the shock-absorbing connecting part is provided with a groove. After the groove and the limiting part are inserted and matched, the connecting part can also be fixedly connected to the shock-absorbing connecting part.

[0017] By adopting the above technical solution, before the shock-absorbing connector and the fixing component are connected, the limiting part on the fixing component and the groove on the connector are connected by a plug-in fit, thereby achieving the initial positioning of the connecting frame on the large public building. This allows each connecting truss to be adjusted by tensioning the circumferential cable, and after adjustment, the position of the connecting truss on the public venue building is fixed by fixing the connection between the connecting part and the shock-absorbing fixing component.

[0018] Optionally, a shock-absorbing support is provided in the groove to support the limiting part. A sliding layer is also provided in the groove, which abuts against the end face of the limiting part.

[0019] By adopting the above technical solution, the damping support is used to weaken the vertical vibration of the limiting part, while the sliding part is used to weaken the horizontal vibration of the limiting part.

[0020] Secondly, this application also provides a method for hoisting a newly added radial annular cantilever structure in a public venue building, used for hoisting the aforementioned newly added radial annular cantilever structure in a public venue building, comprising the following steps:

[0021] Preliminary assembly of the cantilever structure: Assemble the prefabricated cantilever units to form a complete closed loop, and thread the circumferential cables through the radial structure of each cantilever unit and install the fixing components on the connecting truss of each cantilever unit.

[0022] Installation of vibration damping connectors: Install each vibration damping connector on the public building and align them with the positions of the fixing components;

[0023] Erection of the cantilever structure: First, the radial structure of each cantilever unit is brought closer to the center of the closed ring by tensioning the circumferential cables, so that the closed ring has a certain rigidity. Then, the closed ring is lifted so that the positions of each fixing component and each damping connector are aligned. The circumferential cables are then released to connect the fixing components and the damping connectors.

[0024] In summary, this application includes at least the following beneficial technical effects:

[0025] 1. By connecting the fasteners to the damping connectors on the stadium, the cantilever unit is not directly connected to the stadium. This transfers the stress concentration at the connection between the cantilever structure and the stadium to the fasteners and damping connectors. The damping effect of the damping connectors reduces the possibility of stress concentration when the radial auxiliary structure is directly welded to the original structure.

[0026] 2. By setting a plug groove at one end of the connecting steel pipe and a plug part at the other end of the connecting steel pipe, the connecting steel pipes on two adjacent connecting frames can be connected by plug-in fitting, thereby improving the connection efficiency when two adjacent connecting frames are initially connected.

[0027] 3. By breaking down the structure to be added to the stadium into individual cantilever units, each unit can be fabricated according to the curvature of the installation surface on the stadium. Furthermore, each cantilever unit can be initially shaped on the ground using circumferential cables after initial assembly, eliminating the need for shaped shaping after hoisting, thereby improving construction efficiency. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of a newly added radial ring cantilever structure for a public venue building according to Embodiment 1 of this application;

[0029] Figure 2 yes Figure 1 A three-dimensional structural diagram of a public venue building after a new radial ring cantilever structure is added to a gymnasium;

[0030] Figure 3 yes Figure 1 A three-dimensional structural diagram of the cantilever unit;

[0031] Figure 4 This is a three-dimensional schematic diagram of a newly added radial ring cantilever structure in a public venue building according to Embodiment 2 of this application;

[0032] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 This is a three-dimensional schematic diagram of a newly added radial ring cantilever structure for a public venue building according to Embodiment 3 of this application;

[0034] Figure 7 yes Figure 6 Enlarged diagram of point B in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. Cantilever unit; 2. Circumferential cable; 3. Fixing component; 4. Vibration damping connector; 5. Connecting truss; 6. Radial member; 7. Connecting steel pipe; 8. Reinforcing steel pipe; 9. Insertion part; 10. Insertion groove; 11. Supporting steel pipe; 12. Fixing steel pipe; 13. Stay cable; 14. Radial cable; 15. Connecting part; 16. Limiting part; 17. Groove; 18. Vibration damping support; 19. Sliding layer; 20. V-brace. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-7To further elaborate on this application, the public venue building in this application takes the sports hall as an example.

[0037] Example 1:

[0038] Embodiment 1 of this application discloses a new radial ring cantilever structure for public venue buildings, referring to... Figure 1 , Figure 2 and Figure 3 It includes a circumferential cable 2, a fixing member 3, and multiple cantilever units 1. Each cantilever unit 1 includes a connecting truss 5 and a radial member 6 connected to the connecting truss 5. The number of fixing members 3 corresponds one-to-one with the number of connecting trusses 5. The fixing members 3 are installed on one side of the connecting truss 5, while the radial members 6 are installed on the other side of the connecting truss 5. Each connecting truss 5 is connected in series to form a closed loop. The radial members 6 are located inside the closed loop and extend toward the center of the closed loop. The circumferential cable 2 is also located inside the closed loop formed by each connecting truss 5, and each radial member 6 is connected to the circumferential cable 2.

[0039] The connecting truss 5 includes two parallel connecting steel pipes 7. To accommodate the circular curvature of the stadium roof, the two ends of the connecting steel pipes 7 are bent at a certain angle at the center of their length. The two connecting steel pipes 7 are parallel to each other and distributed vertically. Between the two connecting steel pipes 7, there are two reinforcing steel pipes 8. One end of the reinforcing steel pipe 8 is fixedly connected to the upper connecting steel pipe 7, and the other end of the reinforcing steel pipe 8 is fixedly connected to the lower connecting steel pipe 7. The reinforcing steel pipe 8 is perpendicular to the ground. The two ends of one reinforcing steel pipe 8 are respectively connected to the bends of the two connecting steel pipes 7, while the other reinforcing steel pipe 8 is close to the ends of the two connecting steel pipes 7.

[0040] Refer to 2 and Figure 3 Both ends of the connecting steel pipe 7 are closed. One end of the connecting steel pipe 7 is provided with a plug part 9, and the other end of the connecting steel pipe 7 is provided with a plug groove 10. The connecting steel pipes 7 on two adjacent connecting trusses 5 can be initially connected by plugging and matching the plug part 9 and the plug groove 10.

[0041] The radial member 6 includes a supporting steel pipe 11 and a fixed steel pipe 12. One end of the fixed steel pipe 12 is fixedly connected to the connecting steel pipe 7 located below the reinforcing steel pipe 8, while the other end of the fixed steel pipe 12 is connected to one end of the supporting steel pipe 11. The other end of the supporting steel pipe 12 is connected to the connecting steel pipe 7 located above the reinforcing steel pipe 8. The reinforcing steel pipe 8, the supporting steel pipe 11, and the fixed steel pipe 12 form a stable triangle. The circumferential cable 2 is installed at the connection between the supporting steel pipe 11 and the fixed steel pipe 12. This allows the circumferential cable 2 to pull the connecting steel pipe 7 by traction on the supporting steel pipe 11 and the fixed steel pipe 12 when tensioning, so that the closed ring formed by the connection of the connecting steel pipes 7 can have a certain rigidity.

[0042] Reference Figure 3 The fixing component 3 includes a connecting part 15 and a limiting part 16. The connecting part 15 is a rectangular steel plate. The connecting part 15 is fixedly connected to the reinforcing steel pipe 8 located at the center of the length of the connecting steel pipe 7. The connecting part 15 is located outside the closed ring formed by the connecting steel pipe 7. The side of the connecting part 15 away from the reinforcing steel pipe 8 is fixedly connected to the limiting part 16. The limiting part 16 is perpendicular to the connecting part 15. On the gymnasium, there are shock-absorbing connecting components 4 installed in a number corresponding to the number of fixing components 3. One side of the shock-absorbing connecting component 4 is fixedly installed on the gymnasium, and the other side of the shock-absorbing connecting component 4 is provided with a groove 17. A shock-absorbing support 18 is provided in the groove 17. The shock-absorbing support 18 can be made of rubber. When the limiting part 16 is inserted into the groove 17, the shock-absorbing support 18 in the groove 17 supports the limiting part 16 inserted into the groove 17. At the same time, the shock-absorbing support 18 is used to reduce the vibration of the limiting part 16 in the vertical direction.

[0043] Furthermore, a sliding layer 19 is provided in the groove 17. The sliding layer 19 is made of tetrachloroethylene composite. The sliding layer 19 abuts against the end face of the limiting part 16 inserted in the groove 17, thereby reducing the vibration of the limiting part 16 in the horizontal direction.

[0044] After the limiting part 16 is inserted into the groove 17, the connection between the connecting part 15 and the shock-absorbing connecting part 4 can be achieved by bolt connection or by welding.

[0045] The implementation principle of Embodiment 1 of this application is as follows: First, cantilever units 1 are prefabricated on the ground according to the size of the circular area at the top of the stadium. Then, the connecting trusses 5 on each cantilever unit 1 are initially assembled on the ground by plugging them together to form a closed ring. Subsequently, the circumferential cable 2 is tightened so that each cantilever unit 1 is squeezed at the center of the closed ring, thereby giving the closed ring formed by each cantilever unit 1 a certain rigidity. Then, the closed ring formed by each cantilever unit 1 is lifted to the target height by multiple cranes, and the position of the closed ring is aligned so that the position of each fixing part 3 is aligned with the position of each shock-absorbing connecting part 4. Then, the circumferential cable is loosened to realize the plugging and matching between each fixing part 3 and each shock-absorbing connecting part 4. Then, the fixing parts and shock-absorbing connecting parts are fixedly connected. After that, the cranes slowly loosen the connection to the closed ring. Finally, the canopy and LED lights are laid on each cantilever unit 1.

[0046] Example 2:

[0047] Reference Figure 4 and Figure 5 The difference between Embodiment 2 and Embodiment 1 is that an octagonal brace 20 can be installed below each connecting steel pipe 7. The octagonal brace 20 is arranged vertically and is made of two steel pipes welded together. An opening is formed on the two steel pipes away from the connection point. The ends of the two steel pipes at the openings are fixedly connected to the two ends of the fixed steel pipe 12. At the bottom of the octagonal brace 20, a stay cable 13 is connected. One end of the stay cable 13 is connected to the octagonal brace 20, and the other end of the stay cable 13 is connected to the vertical load-bearing member inside the gymnasium. This allows the original structure of the gymnasium to withstand the loads of each... The load brought by the cantilever unit 1 is distributed, thereby increasing the load distribution on the stadium to be more even, so as to be able to bear the load brought by the addition of each cantilever unit 1. This is applicable to situations where the original structure of the stadium cannot bear the load brought by each of the addition cantilever units 1. At the same time, the tension of the circumferential cable 2 and the cable 13 can be monitored by installing magnetic flux sensors before the cable 13 and the circumferential cable 2 leave the factory and vibrating wire cable gauges after the cable 13 and the circumferential cable 2 are installed, so as to understand the load bearing of the circumferential cable 2 and the cable 13 in real time.

[0048] Example 3:

[0049] Reference Figure 6 and Figure 7The difference between Embodiment 3 and Embodiment 1 lies in the selection of the radial member 6. In Embodiment 3, the radial member 6 is a radial cable 14, and the number of radial cables 14 corresponds to the number of cantilever units 1. One end of the radial cable 14 is connected to the connecting steel pipe 7 located at the upper end of the reinforcing steel pipe 8, while the other end of the radial cable 14 is connected to the connecting steel pipe 7 located at the lower end of the reinforcing steel pipe 8. The circumferential cable 2 is threaded through the side of each radial cable 14 closest to the connecting steel pipe 7. This ensures that when the circumferential cable 2 is tensioned, each radial cable 14 is connected to the connecting steel pipe 7. The shape is fixed, and a canopy or lightweight membrane can be laid on each radial cable 14. This is suitable for situations where each cantilever unit 1 only needs to install a canopy or lightweight membrane and does not need to install LED lights or other radial components 6 with small loads. At the same time, magnetic flux sensors can be installed on the circumferential cable 2 and radial cable 14 before they leave the factory, and vibrating wire cable gauges can be installed after the circumferential cable 2 and radial cable 14 are installed to monitor the tension of the circumferential cable 2 and radial cable 14, so as to understand the load bearing of the circumferential cable 2 and radial cable 14 in real time.

[0050] Example 4:

[0051] This application also provides a method for hoisting a newly added radial annular cantilever structure in a public venue building, used for hoisting a newly added radial annular cantilever structure in a public venue building as described in Embodiment 1 above, comprising the following steps:

[0052] Preliminary assembly of the cantilever structure: Assemble the prefabricated cantilever units to form a complete closed loop, and thread the circumferential cables through the radial structure of each cantilever unit and install the fixing components on the connecting truss of each cantilever unit.

[0053] Installation of vibration damping connectors: Install each vibration damping connector on the public building and align them with the positions of the fixing components;

[0054] Erection of the cantilever structure: First, the radial structure of each cantilever unit is brought closer to the center of the closed ring by tensioning the circumferential cables, so that the closed ring has a certain rigidity. Then, the closed ring is lifted so that the positions of each fixing component and each damping connector are aligned. The circumferential cables are then released to connect the fixing components and the damping connectors.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A radial ring-shaped cantilever structure added to a public venue building, characterized in that: The utility model provides a kind of public building, including cantilever unit (1), ring cable (2) and fixing piece (3), the fixing piece (3) quantity corresponds with the quantity of the cantilever unit (1), the cantilever unit (1) includes connecting truss (5) and radial component (6), the fixing piece (3) is fixedly connected in one side of the connecting truss (5), the radial component (6) is connected in the other side of the connecting truss (5), each connecting truss (5) is connected in series and is enclosed to one closed ring, each radial component (6) extends to the center of the closed ring enclosed by the connecting truss (5), the ring cable (2) is connected on each radial component (6), and public building is equipped with the damping connector (4) corresponding with the quantity of the fixing piece (3), and the damping connector (4) is fixedly connected between the fixing piece (3);The connecting truss (5) includes two reinforced steel pipes (8) and two mutually parallel and upper and lower distribution connecting steel pipes (7), and the upper and lower ends of each reinforced steel pipe (8) are vertically connected with two connecting steel pipes (7), one end of the connecting steel pipe (7) is provided with splicing part (9), the other end of the connecting steel pipe (7) is provided with splicing groove (10), and the connecting steel pipes (7) on adjacent two connecting trusses (5) are connected by splicing cooperation;The radial component (6) includes support steel pipe (11) and fixed steel pipe (12), one end of the fixed steel pipe (12) is fixedly connected with the connecting steel pipe (7), the other end of the fixed steel pipe (12) is fixedly connected with the support steel pipe (11), the end of the support steel pipe (11) away from the fixed steel pipe (12) is fixedly connected with the connecting steel pipe (7) above, and the ring cable (2) is connected at the connection of the support steel pipe (11) and the fixed steel pipe (12);The lower side of each connecting steel pipe (7) is provided with splayed support (20), and the splayed support (20) is vertically arranged, the splayed support (20) is welded by two steel pipes, and the positions of the two steel pipes away from the connection are formed with openings, the ends of the two steel pipes at the openings are fixedly connected with the two ends of the fixed steel pipe (12), and the splayed support (20) is connected with the inclined cable (13) at the bottom, one end of the inclined cable (13) is connected with the splayed support (20), and the other end of the inclined cable (13) is connected with the vertical force component inside the gymnasium.

2. A radial ring-shaped cantilever structure added to a public venue building according to claim 1, characterized in that: The radial component (6) includes radial cable (14), one end of the radial cable (14) is connected with the connecting steel pipe (7) at the upper end of the reinforced steel pipe (8), and the other end of the radial cable (14) is connected with the connecting steel pipe (7) at the lower end of the reinforced steel pipe (8) after winding the ring cable (2), and the ring cable (2) is used to pull the radial cable (14) to the center of the closed ring.

3. The radial ring-shaped cantilever structure added to a public venue building according to claim 1, characterized in that: The fixing part (3) comprises a connecting part (15) and a limiting part (16), the connecting part (15) is fixedly connected with the limiting part (16), the connecting part (15) is fixedly connected with the connecting truss (5), the damping connecting part (4) is provided with a groove (17), the connecting part (15) can be further fixedly connected with the damping connecting part (4) after the groove (17) is inserted and matched with the limiting part (16).

4. The radial ring-shaped cantilever structure added to a public venue building according to claim 3, characterized in that: The groove (17) is provided with a damping support (18), the damping support (18) is used for supporting the limiting part (16), the groove (17) is further provided with a sliding layer (19), and the sliding layer (19) is abutted with the limiting part (16).

5. A hoisting method of a radial annular cantilever structure added to a public venue building, for hoisting the radial annular cantilever structure added to the public venue building according to any one of claims 1-4, characterized in that: The method comprises the following steps: Preliminary assembly of the overhanging structure: the prefabricated overhanging units are assembled to form a complete closed ring, the ring-shaped cable is arranged on the radial structure of each overhanging unit, and the fixing part is arranged on the connecting truss of each overhanging unit; Installation of the damping connecting part: the damping connecting part is installed on the public building one by one and corresponds to the position of the fixing part; Hoisting of the overhanging structure: the radial structure of each overhanging unit is close to the center of the closed ring by tensioning the ring-shaped cable, so that the closed ring has a certain rigidity, then the closed ring is hoisted, the position of each fixing part corresponds to the position of each damping connecting part, the ring-shaped cable is loosened, and the fixing part and the damping connecting part are connected.

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