High-rise un-braced, multi-story cantilevered scaffolding with truss canopy and its methods

Abstract

This invention discloses a high-rise, un-braced, multi-layered cantilevered scaffolding with a truss canopy and its method. It is suitable for the simultaneous erection of multiple construction work surfaces and the protection of cultural relics during the renovation of ancient buildings with tall city towers, city platform-style structures, or double-eaved roofs. Through the cooperation of the sturdy frame and the corridor scaffolding, the high-rise ground-mounted scaffolding can ensure the requirement of simultaneous construction of multiple cantilevered work surfaces without bracing or damaging contact with the main building. The canopy adopts a truss structure, with full diagonal bracing between the horizontal uprights of the truss, a cross arrangement of longitudinal and transverse horizontal scissor bracing, and a triangular support frame, forming a comprehensive integrated canopy force system. This solves the problem of canopy stability and provides rain and snow protection during the renovation of the cantilevered roof of ancient buildings. This method makes the renovation of ancient buildings unaffected by seasonal weather, and provides a reliable guarantee for the protection of cultural relics and the construction period.

Description

Technical Field

[0001] This invention relates to the technical field of ancient building and antique-style building restoration, and in particular to a high-rise, un-braced, multi-layer cantilevered scaffold with a truss canopy and a method thereof. Background Technology

[0002] Since most ancient buildings are characterized by a platform that is wider at the bottom and narrower at the top, or by a multi-tiered, receding roof with eaves, the construction of the roof and painted decorations involves multiple working surfaces. If ordinary scaffolding is used, supports need to be erected on the lower roof to support the upper working surfaces. The lower level can only be constructed after the upper level is completed, which will cause slow construction progress, delay the construction period, and greatly reduce construction efficiency.

[0003] Furthermore, the restoration of ancient buildings is greatly affected by weather factors, making protective measures during the restoration process particularly important. This is especially true when repairing the roofs of tall, large-span ancient buildings where covering is not possible. Protecting large timber components, finished paintwork and mortar, and ensuring the construction schedule is not affected presents a significant challenge. Erecting protective canopies is the best solution. However, constructing these canopies presents challenges due to the building's height, open terrain with high wind loads, large spans, and the inability to secure the scaffolding to the main structure. Constructing a stable canopy is therefore extremely difficult. Summary of the Invention

[0004] This invention provides a high-rise, un-braced, multi-layer cantilevered scaffold with a truss canopy and a method thereof, which ensures the requirement of simultaneous construction on multiple cantilevered working faces, makes the repair of ancient buildings unaffected by seasonal weather, and provides a reliable guarantee for cultural relic protection and construction period.

[0005] The technical problems to be solved are: the scaffolding cannot be properly connected to the ancient building structure, resulting in poor scaffolding stability; multiple working surfaces cannot be constructed simultaneously, leading to delays in the construction period; and the renovation process is affected by seasonal weather, which may cause potential damage to building components due to rain and snow.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention relates to a high-rise, un-braced, multi-layer cantilevered scaffold with a truss canopy, comprising...

[0008] The ground-supported scaffolding is erected around the main structure. It includes two rows of uprights, horizontal bars connecting the uprights, and vertical bars. The outer uprights are fully covered with vertical scissor bracing. Continuous horizontal scissor bracing is set between the uprights from the bottom to the top of the scaffolding. Multiple layers of horizontal scissor bracing are set between the uprights at intervals.

[0009] The vehicle-mounted stabilizing frame is arranged in multiple sets at intervals along the bottom perimeter of the ground-supported scaffold. It includes multiple rows of uprights, horizontal bars connecting the uprights, and longitudinal bars. The horizontal bars of the vehicle-mounted stabilizing frame are connected to the corresponding horizontal bars of the ground-supported scaffold. The vehicle-mounted stabilizing frame is connected to the uprights of the ground-supported scaffold with a horizontal diagonal support. The bottom of the vehicle-mounted stabilizing frame is equipped with a counterweight.

[0010] A canopy, covering the main structure and connected to the surrounding ground-supported scaffolding; the canopy includes a truss structure constructed of poles and connected to the ground-supported scaffolding, a pitched roof structure installed on top of the truss structure, and corrugated steel sheets enclosing the pitched roof structure; the pitched roof structure is connected to the truss structure via uprights and diagonal braces; the truss structure has one longitudinal brace every other span, which includes uprights, horizontal bars connecting the uprights, and diagonal braces fully distributed along the horizontal direction between the uprights; a continuous horizontal scissor brace is installed at the bottom of the truss structure between the uprights, and two continuous longitudinal scissor braces are symmetrically installed at the middle of the canopy; the uprights at corresponding positions of the truss structure and the ground-supported scaffolding are connected.

[0011] The present invention provides a high-rise, unbraced, multi-layered cantilevered scaffold with a truss canopy. Furthermore, the cross-section of the vehicle stabilizing frame has a stepped ascending structure.

[0012] The present invention provides a high-rise, multi-layer, cantilevered scaffold with a truss canopy, and further, a triangular support frame is added between the corner of the canopy and the ground-supported scaffold.

[0013] The present invention provides a high-rise, unbraced, multi-layer cantilevered scaffold with a truss canopy. Furthermore, the uprights in the triangular support frame are connected to the uprights at the corresponding positions of the truss structure, the horizontal members are connected to the horizontal members in the ground-supported scaffold, and the diagonal members are connected to the corresponding diagonal braces on the ground-supported scaffold and the truss structure.

[0014] This invention relates to a high-rise, unsupported, multi-layered cantilevered scaffold with a truss canopy. Further, the ground-supported scaffolding is used to erect cantilevered scaffolding layer by layer at the main structure construction site, and corridor scaffolding is erected within the corridors. The vertical poles of the cantilevered scaffolding are connected to the multi-layered transverse diagonal supports between the ground-supported scaffolding and the corridor scaffolding, forming a bottom-supported, top-pull structure to maintain stability. The transverse members of both the cantilevered scaffolding and the corridor scaffolding are connected to the transverse members of the ground-supported scaffolding.

[0015] The present invention provides a high-rise, multi-layer, cantilevered scaffold with a truss canopy, and further, horizontal scissor bracing is added near the ends of the cantilevered uprights of the cantilevered scaffold.

[0016] The present invention provides a high-rise, unsupported, multi-layered cantilevered scaffold with a truss canopy. Furthermore, the outer uprights of the ground-supported scaffold are double uprights.

[0017] The present invention provides a high-rise, unbraced, multi-layer cantilevered scaffold with a truss canopy. Furthermore, the longitudinal scissor bracing on the outer side of the ground-supported scaffold is configured with double bars.

[0018] The present invention provides a high-rise, un-braced, multi-layer cantilevered scaffold with a truss canopy. Furthermore, near the bottom of the uprights of the cantilevered scaffold, a triangular cantilever support frame is erected using a local joint point. One end of the triangular cantilever support frame is connected to the cantilever upright, and the other end is erected on the local joint point of the main structure.

[0019] The present invention discloses a construction method for high-rise, unsupported, multi-story cantilevered scaffolding with a truss canopy, comprising the following steps:

[0020] Step 1: Construction of scaffolding foundation and base;

[0021] Step 2: Based on the positioning measurements, install the members of the ground-supported scaffolding;

[0022] Step 3: The vehicle stabilizing frame is erected simultaneously with the ground-supported scaffolding. When the vehicle stabilizing frame is erected to a certain height, a row of horizontal bars is shortened horizontally with each step, forming a stepped shape. Each row of horizontal bars is connected to the ground-supported scaffolding with diagonal supports. A longitudinal support is set every other span. Horizontal scissor bracing is set on the vehicle stabilizing frame at the position where horizontal scissor bracing is set on the ground-supported scaffolding and connected to the ground-supported scaffolding.

[0023] Step 4: After the ground-supported scaffolding is erected to the corresponding position, the corridor scaffolding and the cantilevered scaffolding are erected simultaneously, and the cantilevered uprights of the cantilevered scaffolding are suspended by the horizontal cross bracing formed between the ground-supported scaffolding and the corridor scaffolding.

[0024] Step 5: After the ground-supported scaffolding has been erected to the designed height, a temporary full-span scaffolding is erected on the roof of the main structure;

[0025] Step 6: Erect a canopy triangular support frame inside the ground-supported scaffold;

[0026] Step 7: Construct the truss structure of the canopy. During construction, support the uprights of the truss structure on the full-span red frame to ensure the stability of the canopy structure during construction.

[0027] Step 8: Erect longitudinal, transverse and horizontal scissor bracing on the truss structure, install longitudinal and transverse horizontal bars of the canopy pitched roof structure, and check the stability of the canopy frame and the overall structure.

[0028] Step 9: Dismantle the full-span red scaffolding, lay corrugated steel sheet tiles and reinforced steel pipes;

[0029] Step 10: Set up lightning protection measures and a monitoring system to monitor the stability of the frame.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The method of adding a seat car and a seat car counterweight is adopted to solve the problem of the stability of the scaffolding that is high in height but cannot be connected to the main body of the ancient building.

[0032] (2) The main body’s outer side load-bearing uprights adopt double uprights and longitudinal double scissor bracing, combined with continuous transverse scissor bracing from bottom to top and horizontal multi-layer continuous scissor bracing, to ensure the load-bearing capacity and overall stability of the outer double-row frame.

[0033] (3) A layer-by-layer cantilever erection method is adopted, and stability is ensured by multi-layer diagonal supports (bracing) between the ground-mounted scaffolding and the corridor scaffolding. This ensures the stability of the cantilevered rods, thereby ensuring the independence of the multi-layer construction surfaces, which are not limited by the step distance and the height of the construction layers can be adjusted. This solves the problem that multi-layer construction cannot be carried out simultaneously in the restoration of ancient buildings, thereby speeding up the construction progress.

[0034] (4) A large-span truss structure fastener scaffold canopy is used to protect the ancient building as a whole. Horizontal continuous scissor bracing is set every other span, and the upper structure of the canopy is connected into a whole by using horizontal scissor bracing to distribute the load of the canopy to the outer ground poles, so as to achieve the effect of stabilizing the bearing capacity.

[0035] (5) The horizontal uprights of the canopy truss are fully covered with diagonal supports to form triangular stable bracing. The bottom of the truss is reinforced with a double row of horizontal bars, and the corners of the canopy form a triangular support frame to increase the rigidity of the truss.

[0036] (6) The canopy adopts a comprehensive arrangement of longitudinal, transverse and horizontal scissor bracing to connect in one piece, thereby enhancing the overall integrity of the frame;

[0037] Furthermore, the entire scaffolding structure is connected as a whole using a comprehensive arrangement of longitudinal, transverse, and horizontal scissor bracing, which enhances the overall integrity and stability of the structure.

[0038] (7) The middle part of the frame is connected by the door opening connecting rods and the top canopy structure connects the four facades of the ground-supported scaffold into one, improving the overall integrity of the scaffold and further ensuring the stability of the ground-supported scaffold without tie.

[0039] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0040] Figure 1 This is a planar schematic diagram of the present invention;

[0041] Figure 2 This is a schematic cross-sectional view of the present invention;

[0042] Figure 3This is a longitudinal elevation view of the present invention;

[0043] Figure 4 for Figure 2 Enlarged diagram of part A in the middle;

[0044] Figure 5 This is a cross-sectional view of the vehicle stabilizing frame of the present invention;

[0045] Figure 6 This is a cross-sectional view of the canopy structure of the present invention;

[0046] Figure 7 This is a longitudinal elevation view of the canopy of the present invention;

[0047] Figure 8 for Figure 6 Enlarged schematic diagram of part B in the middle.

[0048] Figure label:

[0049] 1. Ground-supported scaffolding; 2. Carriage-mounted scaffolding; 3. Cantilevered scaffolding; 4. Corridor scaffolding; 5. Canopy; 5.1. Truss structure; 5.2. Pitched roof structure; 6. Triangular support frame; 7. Uprights; 8. Horizontal bars; 9. Longitudinal bars; 10. Longitudinal scissor bracing; 11. Horizontal scissor bracing; 12. Horizontal scissor bracing; 13. Counterweight; 14. Horizontal diagonal bracing; 15. Triangular cantilevered support frame; 16. Main structure; 17. Doorway connecting rods; 18. Diagonal bracing; 19. Timber; 20. Corrugated steel sheet roofing; 21. Reinforcing steel pipes; 22. Overlap joints; 23. Flooring layer. Detailed Implementation

[0050] The technical background of this application is that the ancient building is a tower-style building with a double-eaved hip roof. The absolute height of the building is 43.65m, and the total height of the scaffolding is nearly 50 meters. The area is open with large wind loads and is located in the city center with many tourists around. The space for erecting the scaffolding is limited. The erection and dismantling of the scaffolding involves the protection of cultural relics and cannot be properly tied. The canopy is difficult to erect.

[0051] like Figure 1 As shown, this invention discloses a high-rise, un-braced, multi-layered cantilevered scaffold with a truss canopy and its method. The structure includes a ground-supported scaffold, a canopy, a vehicle-mounted stabilizing frame, cantilevered scaffold, and corridor scaffold. The ground-supported scaffold and the vehicle-mounted stabilizing frame are fully covered with perforated steel plate protective netting on their outer sides.

[0052] Ground-supported scaffolding: Erected around the perimeter of the city gate, this double-row, level-eave scaffolding consists of two rows of uprights, horizontal and longitudinal bracing connecting the two rows of uprights. Longitudinal, transverse, and horizontal scissor bracing are installed between the uprights, respectively. These bracings are continuous and integrated with the uprights or horizontal bracing of the ground-supported scaffolding, increasing the rigidity of the structure. The load-bearing uprights on the outer side of the main body of the ground-supported scaffolding use double uprights, and the longitudinal scissor bracing uses double scissor bracing. The double uprights and double scissor bracing are formed by double poles. The distribution of the scissor bracing requires that the longitudinal scissor bracing be fully distributed with double uprights and double bracing. A set of transverse scissor bracing is installed every 3000mm. Horizontal scissor bracing is installed at heights of 5000mm, 15000mm, 25000mm, 35000mm, and 45000mm. The included angle of the scissor bracing is controlled between 45-60°.

[0053] During the erection process, a protective layer is laid on the ground, and scaffold boards are laid on the protective layer. The uprights are placed on the scaffold boards to protect the floor tiles and ancient stones.

[0054] In this application, the step distance of the ground-supported scaffolding is 1500mm, the longitudinal spacing is 1500mm, the transverse spacing is 1200mm, and the distance between the inner row of uprights and the wall is 300mm.

[0055] Before erecting ground-mounted scaffolding, protect the floor tiles and ancient stones, and ensure that the protective materials are fire-retardant. Lay scaffold boards with a width of not less than 200mm and a thickness of not less than 45mm on the protective layer.

[0056] Cart-mounted scaffolding is installed every 6 meters along the outer side of the ground-supported scaffolding. One cart-mounted scaffolding unit is installed every 6 meters along the ground-supported scaffolding, with a stepped cross-section. It includes multiple rows of spaced uprights, longitudinal horizontal bars connecting the uprights, and transverse horizontal bars. The transverse horizontal bars of the cart-mounted scaffolding are connected to the transverse horizontal bars of the ground-supported scaffolding. A board is laid at the bottom of the cart-mounted scaffolding, with counterweights installed on the board. Transverse diagonal bracing connects the cart-mounted scaffolding to the uprights of the ground-supported scaffolding. Horizontal scissor bracing is installed on the cart-mounted scaffolding at the locations where horizontal scissor bracing is installed on the ground-supported scaffolding, connecting to the ground-supported scaffolding.

[0057] In this application, the longitudinal spacing of the vehicle stabilizer is 1500mm, the lateral spacing is 1500mm, the step distance is 1500mm, and the standard size is 6000x6000x12000mm.

[0058] Cantilevered scaffolding is erected layer by layer at the main structure construction site using ground-supported scaffolding, and corridor scaffolding is erected within the corridor. The uprights of the cantilevered scaffolding, which extend layer by layer towards the inside of the main structure, are connected to the ground-supported scaffolding and corridor scaffolding through multiple layers of horizontal diagonal supports. This forms a bottom-support and top-pull structure for the uprights of the cantilevered scaffolding, maintaining the stability of the cantilevered uprights, ensuring the independence of multiple construction surfaces, and not being limited by step distance. The height of the construction layers can be adjusted. This solves the problem of not being able to carry out multiple constructions simultaneously in the restoration of ancient buildings, thereby accelerating the construction progress. The cantilevered scaffolding includes multiple rows of uprights installed layer by layer towards the inside of the main structure, horizontal members connecting the uprights, and vertical members. A plank floor is set on the construction layer of the cantilevered scaffolding as a working space. The horizontal members of both the cantilevered scaffolding and the corridor scaffolding are connected to the horizontal members of the ground-supported scaffolding.

[0059] In addition, triangular cantilever support frames are erected near the bottom of the cantilever scaffold uprights using local joint points. One end of the triangular cantilever support frame is connected to the cantilever upright, and the other end is erected on a local joint point of the main structure. Protective pads are placed on the joint points. The triangular cantilever support frame provides support when the cantilever uprights are erected. After the horizontal diagonal bracing at the top of the cantilever uprights is completed and in effect, the function of the triangular cantilever support frame decreases, becoming a double-insurance structure. When the diagonal bracing of the cantilever scaffold is removed, the triangular cantilever support frame provides support.

[0060] Furthermore, horizontal scissor bracing is added near the ends of the cantilevered uprights of the cantilevered scaffolding to transfer the load to the uprights and lap joints of the outer row of ground-supported scaffolding. In addition, horizontal scissor bracing is also added to critical layers of the scaffolding, such as layers prone to deformation and instability.

[0061] The corridor scaffolding includes uprights, horizontal bars, and longitudinal bars. The uprights are situated on the corridor; the horizontal bars are connected to the horizontal bars of the ground-supported scaffolding.

[0062] Specifically, the horizontal spacing of the uprights in the corridor is determined according to the width of the corridor, with a maximum spacing of no more than 1.8m. The longitudinal spacing and step distance are the same as those of the ground-supported scaffolding.

[0063] Furthermore, in the middle of the ground-supported scaffolding, a doorway connecting rod is used for tie-down, and the doorway connecting rod is connected to the corresponding members of the corridor scaffolding.

[0064] The canopy, covering the main structure and connected to the surrounding ground-supported scaffolding, has a sloping roof and truss structure at a slope of 15-25°. It comprises a truss structure made of members connected to the ground-supported scaffolding, a sloping roof structure mounted on top of the truss structure, and corrugated steel sheets enclosing the sloping roof structure. The truss structure consists of uprights, horizontal braces, and diagonal braces running horizontally between the uprights. A longitudinal brace is installed every other span, with additional uprights between spans. The uprights between trusses are connected by longitudinal horizontal braces. A continuous horizontal scissor brace is installed at the bottom of the truss structure between the uprights. Two continuous longitudinal scissor braces are symmetrically installed at the middle of the canopy, with the uprights at corresponding positions on the truss structure and the ground-supported scaffolding connected. The canopy's horizontal diagonal braces intersect to form a full range of horizontal scissor braces. Furthermore, double rows of horizontal members are used at the bottom of the truss structure as a reinforcing layer to increase the rigidity and strength of the truss structure.

[0065] The pitched roof structure includes longitudinal horizontal bars and transverse horizontal bars. Timber is laid on the pitched roof structure and connected to the members of the pitched roof structure by lead wire. Corrugated steel sheets are laid on the timber and connected to the timber by self-tapping screws. Reinforcing steel pipes are set on the corrugated steel sheets and connected to the members of the pitched roof structure by lead wire.

[0066] In this application, the canopy frame has a longitudinal spacing of 3000mm, a transverse spacing of 1500mm, a step distance of 1500mm, and a longitudinal and transverse length of 51000x33000mm.

[0067] Triangular support frames are added between the corner of the canopy and the ground-supported scaffolding. The uprights in the triangular support frames are connected to the uprights at the corresponding positions in the truss structure, the horizontal members are connected to the horizontal members in the ground-supported scaffolding, and the diagonal members are connected to the corresponding diagonal braces on the ground-supported scaffolding and the truss structure.

[0068] The construction method is as follows:

[0069] Positioning and measurement: First, construct the foundation and base of the scaffolding. Then, according to the structural requirements, measure the distance between the inner and outer uprights and the wall at the four corners of the building. Calculate the spacing and number of rows of longitudinal uprights for the ground-supported scaffolding. Use a steel ruler to straighten the uprights and determine their positions. During erection, lay a protective layer on the ground, then lay scaffold boards on the protective layer. The uprights rest on the scaffold boards, and protect the floor tiles and ancient stones.

[0070] Ground-supported scaffolding must be equipped with longitudinal and transverse ground bracing. The longitudinal ground bracing is fixed to the upright 20cm from the bottom of the steel pipe using right-angle couplers. The transverse ground bracing is fixed to the upright immediately below the longitudinal ground bracing using right-angle couplers. When the scaffolding uprights are not at the same height, the longitudinal ground bracing at the higher position must be extended two spans towards the lower position and fixed to the upright.

[0071] Pole erection: Except for the top floor and the top step, all other floors and steps of the pole erection must be extended by butt joint. The butt joint fasteners of the pole erection should be staggered. The joints of two adjacent pole erection should not be set in the same step. The distance between two staggered joints of pole erection that are one pole apart in the same step should not be less than 500mm in the height direction. The distance from the center of each joint to the main node should not be greater than 50mm.

[0072] When the erection poles are first erected, a bracing should be installed every 6 spans until the vehicle stabilization frame or external bracing is installed stably, at which point it can be removed as needed.

[0073] Longitudinal horizontal bars are installed inside the uprights, with a single bar length of not less than three spans. They are fixed to the uprights using right-angle couplers. Longitudinal horizontal bars are extended using butt-joint couplers or lap joints. Joints between two adjacent longitudinal horizontal bars are not located in the same span or at the same level. The horizontal distance between two adjacent joints in different spans or at different levels is less than 500mm. The distance from the center of each joint to the nearest main node is not greater than 500mm of the longitudinal spacing. The lap length of the longitudinal horizontal bars is not less than 1m, and is fixed with three swivel couplers at equal intervals. The distance from the edge of the end coupler cover plate to the end of the lapped longitudinal horizontal bar is not less than 100mm. In this application, longitudinal horizontal bars are arranged in a circular pattern around the perimeter and fixed to the uprights at the inner and outer corners using right-angle couplers.

[0074] Horizontal bars are fixed to the horizontal uprights using right-angle couplers. Above the longitudinal horizontal bars, the spacing between horizontal bars at each location is the same as the longitudinal spacing of the uprights. Horizontal bars on the working level are secured to the longitudinal horizontal bars using right-angle couplers. The overlap length of horizontal bars is no less than 1m, and three swivel couplers are used at equal intervals for fixation. When horizontal bars are butted together, a horizontal bar must be installed at the main node, secured with a right-angle coupler, and its removal is strictly prohibited.

[0075] The vehicle-mounted scaffolding is erected simultaneously with the ground-supported scaffolding. When the vehicle-mounted scaffolding reaches a height of two steps, longitudinal and transverse scissor bracing should be installed, with the angle between the scissor bracing and the ground ideally between 45-60°. After the vehicle-mounted scaffolding reaches a height of 6 or 8 meters, a row of horizontal bars is shortened laterally with each step, forming a stepped structure. Each row of horizontal bars is connected to the ground-supported scaffolding with transverse diagonal bracing, and longitudinal bracing is installed every other span. Horizontal scissor bracing is installed on the vehicle-mounted scaffolding at the same positions as the ground-supported scaffolding, connecting it to the ground-supported scaffolding.

[0076] The diagonal members of the scissor bracing and the horizontal diagonal bracing are fixed to the extended end of the intersecting horizontal bar or the upright with swivel couplers. The diagonal members of the scissor bracing are extended by lap splicing, with an lap length of not less than 1m, and are fixed with 3 swivel couplers.

[0077] The scissor bracing should be erected simultaneously with the uprights, longitudinal and transverse horizontal bars, and should not be delayed in installation.

[0078] For corridor scaffolding and cantilever scaffolding, once the ground-supported scaffolding is erected to the corresponding position, the cantilevered uprights of the cantilever scaffolding are erected simultaneously with it, and the horizontal cross-bracing formed between the ground-supported scaffolding and the corridor scaffolding is used to suspend the cantilevered uprights of the cantilever scaffolding.

[0079] Before erecting the cantilevered scaffolding, a triangular cantilevered support frame is first erected near the bottom of the cantilevered scaffolding uprights using local joint points. One end of the triangular cantilevered support frame is connected to the cantilevered upright, and the other end is erected on a local joint point of the main structure. Protective pads are placed on the joint points. The triangular cantilevered support frame plays a supporting role when erecting the cantilevered uprights.

[0080] For canopy erection, after the ground-supported scaffolding has been erected to the designed height, a temporary full-span scaffolding is erected on the roof of the main structure. A canopy triangular support frame is erected inside the ground-supported scaffolding. The truss structure of the canopy is then erected. During erection, the uprights of the truss structure are supported on the full-span scaffolding to ensure the stability of the canopy structure during erection. Longitudinal and horizontal scissor bracing is erected on the truss structure. A pitched roof structure is then erected on the truss structure, and the longitudinal and transverse horizontal bars of the pitched roof structure of the canopy are installed. The stability of the canopy and the overall structure are then checked.

[0081] The temporary full-span red scaffolding was dismantled, and timber, corrugated steel sheets, and reinforcing steel pipes were laid. Finally, lightning protection measures and a monitoring system were installed to monitor the stability of the scaffolding.

[0082] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A high-rise, unsupported, multi-story cantilevered scaffold with a truss canopy, characterized in that: include The ground-supported scaffolding is erected around the main structure. It includes two rows of uprights, horizontal bars connecting the uprights, and vertical bars. The outer uprights are fully covered with vertical scissor bracing. Continuous horizontal scissor bracing is set between the uprights from the bottom to the top of the scaffolding. Multiple layers of horizontal scissor bracing are set between the uprights at intervals. The vehicle-mounted stabilizing frame is arranged in multiple sets at intervals along the bottom perimeter of the ground-supported scaffold. It includes multiple rows of uprights, horizontal bars connecting the uprights, and longitudinal bars. The horizontal bars of the vehicle-mounted stabilizing frame are connected to the corresponding horizontal bars of the ground-supported scaffold. The vehicle-mounted stabilizing frame is connected to the uprights of the ground-supported scaffold with a horizontal diagonal support. The bottom of the vehicle-mounted stabilizing frame is equipped with a counterweight. A canopy, covering the main structure and connected to the surrounding ground-supported scaffolding; the canopy includes a truss structure constructed of poles and connected to the ground-supported scaffolding, a pitched roof structure installed on top of the truss structure, and corrugated steel sheets enclosing the pitched roof structure; the pitched roof structure is connected to the truss structure via uprights and diagonal braces; the truss structure has one longitudinal brace every other span, which includes uprights, horizontal bars connecting the uprights, and diagonal braces fully distributed along the horizontal direction between the uprights; a continuous horizontal scissor brace is installed at the bottom of the truss structure between the uprights, and two continuous longitudinal scissor braces are symmetrically installed at the middle of the canopy; the uprights at corresponding positions of the truss structure and the ground-supported scaffolding are connected.

2. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy as described in claim 1, characterized in that: The cross-section of the vehicle stabilizing frame has a stepped upward structure.

3. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy as described in claim 1, characterized in that: A triangular support frame is added between the corner of the canopy and the ground-mounted scaffolding.

4. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy as described in claim 3, characterized in that: The uprights in the triangular support frame are connected to the uprights at the corresponding positions in the truss structure, the horizontal members are connected to the horizontal members in the ground-supported scaffolding, and the diagonal members are connected to the corresponding diagonal braces on the ground-supported scaffolding and the truss structure.

5. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy according to claim 1, characterized in that: The ground-supported scaffolding is erected layer by layer at the main structure construction site, and corridor scaffolding is erected in the corridor. The vertical poles of the cantilevered scaffolding are connected to the multi-layer horizontal diagonal supports between the ground-supported scaffolding and the corridor scaffolding to form a bottom-support and top-pull structure to maintain stability. The horizontal members of the cantilevered scaffolding and the corridor scaffolding are all connected to the horizontal members of the ground-supported scaffolding.

6. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy according to claim 5, characterized in that: Horizontal scissor bracing is added near the end of the cantilevered upright of the cantilevered scaffold.

7. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy according to claim 1, characterized in that: The outer uprights of the ground-supported scaffolding are double uprights.

8. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy according to claim 1, characterized in that: The longitudinal scissor bracing on the outer side of the ground-supported scaffold is set with double bars.

9. The high-rise, unsupported, multi-layer cantilevered scaffolding with a truss canopy according to claim 5, characterized in that: Near the bottom of the uprights of the cantilever scaffold, a triangular cantilever support frame is erected using a local joint point. One end of the triangular cantilever support frame is connected to the cantilever upright, and the other end is erected on a local joint point of the main structure.

10. A construction method for a high-rise, un-braced, multi-layer cantilevered scaffold with a truss canopy according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Construction of scaffolding foundation and base; Step 2: Based on the positioning measurements, install the members of the ground-supported scaffolding; Step 3: The vehicle stabilizing frame is erected simultaneously with the ground-supported scaffolding. When the vehicle stabilizing frame is erected to a certain height, a row of horizontal bars is shortened horizontally with each step, forming a stepped shape. Each row of horizontal bars is connected to the ground-supported scaffolding with diagonal supports. A longitudinal support is set every other span. Horizontal scissor bracing is set on the vehicle stabilizing frame at the position where horizontal scissor bracing is set on the ground-supported scaffolding and connected to the ground-supported scaffolding. Step 4: After the ground-supported scaffolding is erected to the corresponding position, the corridor scaffolding and the cantilevered scaffolding are erected simultaneously, and the cantilevered uprights of the cantilevered scaffolding are suspended by the horizontal cross bracing formed between the ground-supported scaffolding and the corridor scaffolding. Step 5: After the ground-supported scaffolding has been erected to the designed height, a temporary full-span scaffolding is erected on the roof of the main structure; Step 6: Erect a canopy triangular support frame inside the ground-supported scaffold; Step 7: Construct the truss structure of the canopy. During construction, support the uprights of the truss structure on the full-span red frame to ensure the stability of the canopy structure during construction. Step 8: Erect longitudinal, transverse and horizontal scissor bracing on the truss structure, install longitudinal and transverse horizontal bars of the canopy pitched roof structure, and check the stability of the canopy frame and the overall structure. Step 9: Dismantle the full-span red scaffolding, lay corrugated steel sheet tiles and reinforced steel pipes; Step 10: Set up lightning protection measures and a monitoring system to monitor the stability of the frame.

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