Large-span spoke type cable-supported roof canopy scaffold-free construction method

Abstract

The application discloses a large-span spoke type cable-supported roof canopy scaffold-free construction method, and solves the technical problems of a large number of field support frames, a large amount of high-altitude operation and slow field construction progress in the prior art.The application comprises the following steps: step one, prestressed cable structure tensioning finite element simulation analysis;step two, outer ring beam hoisting;step three, installation of radial cables and ring cables in place;step four, symmetrical hoisting of upper prestressed cable chord trusses in a clockwise direction;step five, hoisting in the above construction sequence in turn until the whole canopy is installed.The application is scientific and reasonable in design, can effectively reduce the number of field support frames, reduce the amount of high-altitude operation, and effectively speed up the field construction progress.The steel structure part inside the canopy outer ring beam of the application does not need support frames, can effectively reduce the amount of measures, and provides a large amount of construction sites for the stands and internal sites of the stadium.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. Background Technology

[0002] The spoke-type cable-supported roof structure system, under prestress, is in a self-balancing tensioned state, possessing excellent overall structural rigidity. It can be used for roof structures of large-span spatial buildings with internal openings, commonly found in large stadiums and football stadiums. Its structure includes: a rigid outer ring beam located at the outer edge of the tensioned structure; a radially tensioned chord structure, comprising rigid radial beams, located at the top of the tensioned structure in a radially radiating pattern; a central vertical strut located in the middle of the tensioned structure; radial and circumferential cable sections, including a central circumferential cable located in the middle of the tensioned structure and below the central vertical strut; external radial cables located at the lower part of the tensioned structure; and internal circumferential cables located at the openings of the tensioned structure.

[0003] The traditional construction method for large-span spoke-type cable-supported roof canopy involves installing an advanced rigid outer ring beam; then erecting a support frame and installing rigid radial beams and vertical struts from the outside in; finally, laying circumferential and radial prestressed cables on the stadium stands, lifting and tensioning them, dismantling the internal support frame, and completing the canopy structure installation.

[0004] Traditional methods have technical problems such as requiring a large amount of support structure, occupying construction site space, long construction period, high-altitude work, and being greatly affected by weather. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a method for constructing a large-span spoke-type cable-supported roof canopy without supports, so as to at least solve some of the above-mentioned technical problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding involves dividing the canopy into four sections (A, C, B, and D) in a clockwise direction for simultaneous construction. Hoisting access channels and structural assembly areas are set up inside and outside the grandstand. Sections AC and BD are constructed symmetrically.

[0008] Furthermore, the basement floor slab is reinforced by backfilling under the hoisting channel.

[0009] Furthermore, the construction includes the following steps:

[0010] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0011] Step 2: Hoisting of the outer ring beam;

[0012] Step 3: Install the radial and circumferential cables into place;

[0013] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0014] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0015] Furthermore, in step one, when performing finite element simulation analysis on the tensioning of the prestressed cable structure, the overall tensioned prestressed cable structure is first simulated, and then the deflection values ​​and cable stress generated by the radial beams and struts on the upper part of the cable are installed, providing a basis for tensioning the cable structure to the design state in one go.

[0016] Furthermore, in step two, when hoisting the outer ring beam, a 400t crawler crane is used for off-site hoisting, and construction is carried out in a clockwise direction, symmetrically hoisting from area A to area C and from area B to area D.

[0017] Furthermore, the outer ring beam is installed by assembling it into unit modules on the ground, then hoisting it in sequence, and finally adding the members between adjacent units.

[0018] Furthermore, in step three, when the radial and circumferential cables are installed in place, prestressed cables are tensioned according to the finite element simulation results; the circumferential cables are erected with supports and the cables are hoisted into place using tooling cables; the radial and circumferential cables are connected at high altitude at the support positions.

[0019] Furthermore, in step four, the upper tension truss of the prestressed cable is symmetrically hoisted in the AC and BD areas in a clockwise direction, and the lower part of the truss is connected to the cable by a pin. The tension truss is first assembled on the ground and divided into module 1 and module 2 in the radial direction, and is hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy by 400t crawler hoisting.

[0020] Furthermore, two modules 2 are first hoisted onto the outer side of the large-span spoke-type cable-supported roof canopy, and then circumferential members are added between the two adjacent modules to form a stable structure. Then, a module 1 is hoisted from the inside.

[0021] Furthermore, in step five, the circumferential members between adjacent modules 1 are hoisted and installed sequentially according to the above construction sequence until the entire canopy is installed.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention is scientifically and rationally designed, which can effectively reduce the number of on-site support frames, reduce the amount of high-altitude work, and effectively speed up the on-site construction progress.

[0024] This invention features rapid installation, low construction cost, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the front end of the roof.

[0025] The steel structure within the outer ring beam of the canopy of this invention does not require a support frame, which can effectively reduce the amount of measures required and provide a large amount of construction space for the stadium stands and internal areas.

[0026] In this invention, each radially tensioned truss is divided into two modules for hoisting, which can effectively ensure installation accuracy and speed up the hoisting process.

[0027] This invention employs symmetrical construction in zones, which can effectively accelerate the construction progress and also help reduce the cumulative error caused by hoisting, bringing it closer to the design state. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the construction process of the large-span spoke-type cable-supported roof canopy without scaffolding according to the present invention.

[0029] Figure 2 This invention presents a schematic diagram showing the overall construction of a large-span spoke-type cable-supported roof canopy divided into four major construction zones: A, B, C, and D.

[0030] Figure 3 This is a diagram showing the hoisting state of the outer ring beam of the present invention.

[0031] Figure 4 This is a schematic diagram of the radial and circumferential cables being installed in place according to the present invention. Figure 1 .

[0032] Figure 5 This is a schematic diagram of the radial and circumferential cables being installed in place according to the present invention. Figure 2 .

[0033] Figure 6 This is a schematic diagram of the symmetrical hoisting of the prestressed cable upper tensioned truss of the present invention.

[0034] Figure 7 This is a schematic diagram of the tensioned truss of the present invention divided into module 1 and module 2 along the radial direction.

[0035] Figure 8 This is a schematic diagram of two modules 2 being hoisted onto the outside of the present invention.

[0036] Figure 9 This is a schematic diagram of the circumferential rod between two adjacent modules in this invention.

[0037] Figure 10 This is a schematic diagram of a module 1 being hoisted from the inside after the present invention has formed a stable structure.

[0038] Figure 11 This is a schematic diagram showing the overall canopy of the present invention after installation.

[0039] Figure 12 This is a schematic diagram of the large-span spoke-type cable-supported roof canopy of the present invention. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] Example 1.

[0042] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without supports. The large-span spoke-type cable-supported roof canopy is divided into four sections, A, C, B and D, in a clockwise direction and constructed simultaneously. At the same time, hoisting channels and structural assembly sites are set up inside and outside the grandstand. The basement floor slab is reinforced under the hoisting channels. Sections AC and BD are constructed symmetrically.

[0043] This invention is scientifically and rationally designed, which can effectively reduce the number of on-site support frames, reduce the amount of high-altitude work, and effectively speed up the on-site construction progress.

[0044] Example 2.

[0045] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0046] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0047] Step 2: Hoisting of the outer ring beam;

[0048] Step 3: Install the radial and circumferential cables into place;

[0049] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0050] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0051] This invention features a scientifically sound design that effectively reduces the number of on-site support frames, minimizes high-altitude work, and accelerates on-site construction. It offers rapid installation, low construction costs, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the roof's front end. The steel structure within the outer ring beam of this invention requires no support frames, significantly reducing the amount of measures needed and providing ample construction space for the stadium stands and interior areas. Each radially tensioned truss is installed in two modules, ensuring installation accuracy and accelerating the hoisting speed. The invention employs sectional symmetrical construction, effectively accelerating the construction progress and reducing cumulative errors during hoisting, resulting in a closer approximation to the design state.

[0052] Example 3.

[0053] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0054] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0055] Step 2: Hoisting of the outer ring beam;

[0056] Step 3: Install the radial and circumferential cables into place;

[0057] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0058] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0059] In step one, when performing finite element simulation analysis on the tensioning of the prestressed cable structure, the overall tensioned prestressed cable structure is first simulated, and then the deflection value and cable stress generated by the radial beam and struts on the upper part of the cable are installed, providing a basis for tensioning the cable structure to the design state in one go.

[0060] This embodiment 3, based on embodiment 2, presents a more optimized method for finite element simulation analysis of prestressed cable structure tensioning. Specifically, when performing finite element simulation analysis of prestressed cable structure tensioning, the overall tensioned prestressed cable structure is first simulated, and then the deflection values ​​and cable stresses generated by the radial beams and struts at the top of the cable are installed. This provides a basis for tensioning the cable structure to the design state in one go. This invention features rapid installation, low construction cost, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the front end of the roof.

[0061] Example 4.

[0062] like Figure 1-12As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0063] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0064] Step 2: Hoisting of the outer ring beam;

[0065] Step 3: Install the radial and circumferential cables into place;

[0066] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0067] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0068] In step two, when hoisting the outer ring beam, a 400t crawler crane is used for off-site hoisting, and the construction is carried out in a clockwise direction, symmetrically hoisting from area A to area C and from area B to area D.

[0069] This embodiment 4, based on embodiment 2, presents a more optimized method for hoisting the outer ring beam. Specifically, during the hoisting of the outer ring beam, a 400t crawler crane is used for off-site hoisting, employing a clockwise direction, symmetrically hoisting from area A to area C, and from area B to area D. The steel structure within the outer ring beam of this invention does not require support frames, effectively reducing the amount of measures needed and providing ample construction space for the stadium stands and internal areas. This invention utilizes symmetrical, zoned construction, which effectively accelerates the construction progress and helps reduce cumulative errors caused by hoisting, bringing the design closer to the final state.

[0070] Example 5.

[0071] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0072] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0073] Step 2: Hoisting of the outer ring beam;

[0074] Step 3: Install the radial and circumferential cables into place;

[0075] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0076] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0077] In step two, when hoisting the outer ring beam, a 400t crawler crane is used for off-site hoisting, and the construction is carried out in a clockwise direction, symmetrically hoisting from area A to area C and from area B to area D.

[0078] The outer ring beam is installed by assembling it into unit modules on the ground, then hoisting it in sequence, and finally adding the members between adjacent units.

[0079] Based on Example 4, Example 5 presents a more preferred method for hoisting the outer ring beam. Specifically, the outer ring beam is assembled into unit modules on the ground, then hoisted sequentially, and finally the members between adjacent units are installed. The steel structure within the outer ring beam of this invention does not require a support frame, effectively reducing the amount of work and providing ample construction space for the stadium stands and interior areas.

[0080] Example 6.

[0081] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0082] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0083] Step 2: Hoisting of the outer ring beam;

[0084] Step 3: Install the radial and circumferential cables into place;

[0085] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0086] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0087] In step three, when the radial and circumferential cables are installed in place, prestressed cables are tensioned according to the finite element simulation results; the circumferential cables are erected with supports and the cables are hoisted into place using tooling cables; the radial and circumferential cables are connected at high altitude at the support positions.

[0088] This embodiment 6, based on embodiment 2, presents a more optimized method for installing the radial and circumferential cables. Specifically, when installing the radial and circumferential cables, prestressed cables are tensioned according to finite element simulation results; circumferential cables are supported by a scaffold and hoisted into place using tooling cables; the radial and circumferential cables are connected at the scaffold positions. This invention is scientifically and rationally designed, effectively reducing the number of on-site support frames, minimizing high-altitude work, and significantly accelerating on-site construction progress. This invention offers rapid installation, low construction costs, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the front end of the roof. The steel structure within the outer ring beam of this invention requires no support frames, effectively reducing the amount of measures needed and providing ample construction space for the stadium stands and internal areas.

[0089] Example 7.

[0090] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0091] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0092] Step 2: Hoisting of the outer ring beam;

[0093] Step 3: Install the radial and circumferential cables into place;

[0094] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0095] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0096] In step four, the upper tensioned truss of the prestressed cable is symmetrically hoisted in the AC and BD areas in a clockwise direction, and the lower part of the truss is connected to the cable by a pin. The tensioned truss is first assembled on the ground and divided into module 1 and module 2 in the radial direction. It is hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy by 400t crawler hoisting.

[0097] Based on Example 2, Example 7 presents a more preferred method for symmetrically hoisting the upper tensioned truss of the prestressed cable in a clockwise direction. Specifically, the upper tensioned truss of the prestressed cable is symmetrically hoisted in the AC and BD zones in a clockwise direction, with the lower part of the truss connected to the cable using pins. The tensioned truss is first assembled on the ground and radially divided into module 1 and module 2, which are then hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy using 400t crawler cranes. This invention offers rapid installation, low construction cost, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the front end of the roof. The steel structure within the outer ring beam of the canopy requires no support frame, effectively reducing the amount of measures required and providing ample construction space for the stadium stands and internal areas. The hoisting of each radial tensioned truss in two modules effectively ensures installation accuracy and accelerates hoisting speed. The symmetrical construction method of this invention effectively accelerates the construction progress and helps reduce the cumulative error caused by hoisting, bringing the design closer to the final state.

[0098] Example 8.

[0099] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0100] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0101] Step 2: Hoisting of the outer ring beam;

[0102] Step 3: Install the radial and circumferential cables into place;

[0103] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0104] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0105] In step four, the upper tensioned truss of the prestressed cable is symmetrically hoisted in the AC and BD areas in a clockwise direction, and the lower part of the truss is connected to the cable by a pin. The tensioned truss is first assembled on the ground and divided into module 1 and module 2 in the radial direction. It is hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy by 400t crawler hoisting.

[0106] Based on Example 7, Example 8 provides a more preferred method for symmetrically hoisting the upper tensioned truss of the prestressed cable in a clockwise direction. Specifically, two modules 2 are first hoisted onto the outer side of the large-span spoke-type cable-supported roof canopy, then the circumferential members between adjacent modules are added to form a stable structure, and then a module 1 is hoisted from the inside. In this invention, the steel structure within the outer ring beam of the canopy does not require a support frame, effectively reducing the amount of work and providing ample construction space for the stadium stands and internal areas. In this invention, each radially tensioned truss is hoisted in two modules, effectively ensuring installation accuracy and accelerating the hoisting speed.

[0107] Example 9.

[0108] like Figure 1-12 As shown, the present invention provides a method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding. The construction includes the following steps:

[0109] Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure;

[0110] Step 2: Hoisting of the outer ring beam;

[0111] Step 3: Install the radial and circumferential cables into place;

[0112] Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction;

[0113] Step 5: Hoist the canopy in the above construction sequence until the entire canopy is installed.

[0114] In step four, the upper tensioned truss of the prestressed cable is symmetrically hoisted in the AC and BD areas in a clockwise direction, and the lower part of the truss is connected to the cable by a pin. The tensioned truss is first assembled on the ground and divided into module 1 and module 2 in the radial direction. It is hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy by 400t crawler hoisting.

[0115] In step five, the circumferential members between adjacent modules 1 are hoisted and installed sequentially according to the above construction sequence until the entire canopy is installed.

[0116] Based on Example 8, Example 9 provides a more preferred method for sequentially hoisting the components along the aforementioned construction sequence until the entire canopy is installed. Specifically, the components are hoisted sequentially along the aforementioned construction sequence, with additional circumferential members installed between adjacent modules 1, until the entire canopy is installed. This invention employs symmetrical, zoned construction, which effectively accelerates the construction progress and helps reduce the cumulative error caused by hoisting, resulting in a closer approximation to the design state.

[0117] This invention provides a scaffold-free construction method for large-span spoke-type cable-supported roof canopies, reducing the number of on-site support frames, minimizing high-altitude work, and accelerating on-site progress. This method utilizes a combination of crawler cranes and truck cranes for hoisting. The large-span spoke-type cable-supported roof canopy is divided into four main construction zones: A, B, C, and D. Figure 2 As shown in the diagram. Sections AC and BD are constructed symmetrically. Hoisting access roads (requiring reinforcement of the basement floor slab beneath the access roads) and structural assembly areas are also set up inside and outside the stands.

[0118] The construction method of this invention is as follows:

[0119] Step 1: Perform finite element simulation analysis. First, simulate the overall tensioned prestressed cable structure, and then install the radial beams and struts on the upper part of the cable and other steel structures to generate deflection values ​​and cable stress, providing a basis for tensioning the cable structure to the design state in one go.

[0120] Step Two: Outer Ring Beam Lifting. A 400t crawler crane will be used for off-site lifting, proceeding clockwise from area A to area C, and from area B to area D, symmetrically. The outer ring beam will be installed by assembling it into modular units on the ground, then lifting them sequentially, and finally adding the connecting members between adjacent units. Figure 3 As shown.

[0121] Step 3: Install the radial and circumferential cables in place, and perform prestressed cable tensioning based on the finite element simulation results. The circumferential cables require a support frame, and are hoisted into position using tooling cables. The radial and circumferential cables are then connected at the support frame location. Figure 4 and Figure 5 As shown.

[0122] Step 4: In area AB, symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction. The lower part of the truss is connected to the cable using pins. Figure 6 As shown. The tensioned truss (radial steel beams + vertical struts) is first assembled on the ground, and then divided into module 1 and module 2 radially, as shown. Figure 7 As shown, 400t crawler hoists were used to lift the equipment from both the inside and outside of the stadium.

[0123] Among them, such as Figure 8 As shown, two modules 2 are first hoisted onto the outer side, and then the circumferential members between the two adjacent modules are added to form a stable structure, as shown. Figure 9 As shown; then, a module 1 is hoisted from the inside, as shown. Figure 10 As shown.

[0124] Step 5: Following the above construction sequence, hoist and install the circumferential members between adjacent modules 1 until the entire canopy is installed. Figure 11 As shown.

[0125] This invention is scientifically and rationally designed, which can effectively reduce the number of on-site support frames, reduce the amount of high-altitude work, and effectively speed up the on-site construction progress.

[0126] This invention features rapid installation, low construction cost, high construction quality, and provides tension compensation through finite element simulation, effectively solving the technical problem of downward deformation at the front end of the roof.

[0127] The steel structure within the outer ring beam of the canopy of this invention does not require a support frame, which can effectively reduce the amount of measures required and provide a large amount of construction space for the stadium stands and internal areas.

[0128] In this invention, each radially tensioned truss is divided into two modules for hoisting, which can effectively ensure installation accuracy and speed up the hoisting process.

[0129] This invention employs symmetrical construction in zones, which can effectively accelerate the construction progress and also help reduce the cumulative error caused by hoisting, bringing it closer to the design state.

[0130] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention used to illustrate the technical solutions of the present invention, and are not intended to limit the invention, nor are they intended to limit the patent scope of the present invention. Any modifications or refinements made to the main design concept and spirit of the present invention that are not of substantial significance, but which still solve the same technical problem as the present invention, should be included within the protection scope of the present invention; in addition, the direct or indirect application of the technical solutions of the present invention to other related technical fields are similarly included within the patent protection scope of the present invention.

Claims

1. A method for constructing a large-span, spoke-type cable-supported roof canopy without scaffolding, characterized in that, The large-span spoke-type cable-supported roof canopy is divided into four sections, A, C, B, and D, in a clockwise direction and constructed simultaneously. At the same time, hoisting channels and structural assembly sites are set up inside and outside the grandstand. Sections AC and BD are constructed symmetrically. The construction includes the following steps: Step 1: Perform finite element simulation analysis on the tensioning of the prestressed cable structure; Step 2: Hoisting of the outer ring beam; Step 3: Install the radial and circumferential cables into place; Step 4: Symmetrically hoist the upper tensioned truss of the prestressed cable in a clockwise direction; Step 5: Hoist the components sequentially according to the above construction sequence until the entire canopy is installed; In step four, the upper tension truss of the prestressed cable is symmetrically hoisted into the AC and BD areas in a clockwise direction, and the lower part of the truss is connected to the cable by a pin. The tensioned truss is first assembled on the ground and divided into module 1 and module 2 radially. It is then hoisted from the inside and outside of the large-span spoke-type cable-supported roof canopy using 400t crawler hoisting equipment. Two modules 2 are first hoisted onto the outside of the large-span spoke-type cable-supported roof canopy, then the circumferential rods between the two adjacent modules are added to form a stable structure, and then a module 1 is hoisted from the inside.

2. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 1, characterized in that, The basement floor slab was reinforced by backfilling under the hoisting channel.

3. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 1, characterized in that, In step one, when performing finite element simulation analysis on the tensioning of the prestressed cable structure, the overall tensioned prestressed cable structure is first simulated, and then the deflection value and cable stress generated by the radial beam and struts at the top of the cable are installed, providing a basis for tensioning the cable structure to the design state in one go.

4. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 1, characterized in that, In step two, when hoisting the outer ring beam, a 400t crawler crane is used for off-site hoisting, and the construction is carried out in a clockwise direction, symmetrically hoisting from area A to area C and from area B to area D.

5. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 4, characterized in that, The outer ring beam is installed by assembling it into unit modules on the ground, then hoisting it in sequence, and finally adding the members between adjacent units.

6. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 1, characterized in that, In step three, when the radial and circumferential cables are installed in place, the prestressed cables are tensioned according to the finite element simulation results; the circumferential cables are erected using supports and the cables are hoisted into place using tooling cables; The radial and circumferential cables are connected at high altitude at the support location.

7. The method for constructing a large-span spoke-type cable-supported roof canopy without scaffolding according to claim 1, characterized in that, In step five, the circumferential members between adjacent modules 1 are hoisted and installed sequentially according to the above construction sequence until the entire canopy is installed.

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