Construction method for local suspension reinforcement of steel pipe scaffold

Abstract

The invention relates to the technical field of scaffold construction, in particular to a steel pipe scaffold local suspension reinforcement construction method, which adopts the technical scheme that a scaffold foundation is treated firstly, a fractured cushion layer above a sinking area of backfill soil can be broken, then the backfill soil is tamped, and a concrete cushion layer is poured again; for a suspended scaffold, the supporting effect of the bottom of the scaffold steel pipe is improved by tamping the backfill soil at the bottom, the contact area of the scaffold steel pipe and concrete can be increased by welding the reinforcing steel bar heads at the bottom, and the scaffold steel pipe is firmly connected with the concrete after pouring is completed; by means of the measure of pouring the concrete buttress for reinforcement, potential safety hazards of the scaffold are reduced, the reworking treatment cost of the scaffold is reduced, meanwhile, the settlement observation points are arranged, the bottom can be prevented from collapsing again through regular detection, and the problem that the bottom of the scaffold is prone to sinking is solved.

Description

Technical Field

[0001] This invention relates to the field of scaffolding construction technology, and in particular to a method for partially suspended reinforcement of steel pipe scaffolding. Background Technology

[0002] During the construction of the building's exterior walls, scaffolding needs to be erected on the exterior of the building. Since the scaffolding is erected at a high height, the soil at the bottom of the scaffolding needs to be compacted, and cement is poured on the compacted soil base. The bottom of the scaffolding is then fixed to the cement base using expansion bolts or other methods to ensure stable support at the bottom of the scaffolding.

[0003] During the construction of the main building's external scaffolding, some scaffolding structures were located on top of backfilled earth. Although a concrete base layer was installed at the bottom of the scaffolding, in areas with heavy rainfall, rainwater infiltration could easily cause the earth to settle, damaging the scaffolding base layer and resulting in partial suspension of the scaffolding. When the suspension is small, steel plates or formwork can be used to fill the suspended parts at the bottom of the scaffolding. However, if the suspension is large, this method cannot be used, making it difficult to provide stable support for the bottom of the scaffolding. Therefore, this application proposes a construction method for reinforcing partially suspended steel pipe scaffolding. Summary of the Invention

[0004] The purpose of this invention is to address the problem of easy sinking of the bottom of scaffolding in the background art, and to propose a construction method for partial suspension reinforcement of steel pipe scaffolding.

[0005] The technical solution of this invention: A method for partial suspension reinforcement of steel pipe scaffolding, the method comprising the following steps: S1. First, treat the scaffolding foundation. In areas where the backfill soil has subsided, the broken pad layer above can be removed, then the backfill soil can be compacted, and a new concrete pad layer can be poured. If some of the foundation pad layer can be used, use a sledgehammer to knock the pad layer down to the backfill soil surface. S2. Weld reinforcing bars to the bottom of the steel pipes of the partially suspended scaffolding by spot welding. The length of the reinforcing bars is 120-200mm. The reinforcing bars can increase the contact area between the steel pipe and the concrete. After welding, apply a release agent to the steel pipe and the reinforcing bars. S3. Install the formwork assembly at the bottom of the scaffolding steel pipe. The formwork assembly is square in shape with a side length of 150-300mm. The height is determined according to the suspension height + 30mm. After the formwork is installed, pour concrete and mark the concrete. S4. After the concrete has cured and reached its strength, the formwork components can be removed, and settlement observation points can be set on the top of the poured column pier. Construction personnel can regularly observe the column pier elevation to effectively prevent the poured column pier from collapsing.

[0006] Optionally, the template assembly includes a first template, with a plug fixed to one side of the first template and a slot on the other side of the first template. A second template is provided on one side of the first template, and the first template and the second template are perpendicularly distributed. A set of plugs and a set of slots are also provided on both sides of the second template. The scaffolding steel pipes and steel bars are inserted into the interior of the first template and the second template. It also includes a locking assembly for holding the position of the scaffolding steel pipe at the center of the template, the locking assembly including an L-shaped plate rotatably connected to the top of the first template via a pivot. One side of the L-shaped plate is provided with a sealing component for closing the top of the first template and the second template; A fixing component is provided on one side of the first template, which is used to fix the position between the first template and the second template.

[0007] Optionally, the locking assembly further includes a long rod, which is slidably disposed on one side of the L-shaped plate. A spring is fixedly connected to one side of the L-shaped plate, and an arc-shaped block is fixedly connected to one end of the spring. One end of the long rod is fixedly connected to the arc-shaped block, which is attached to the outer wall of the scaffold steel pipe. Two sets of the L-shaped plate, spring, long rod, and arc-shaped block are provided and symmetrically distributed at the top of the two sets of first templates.

[0008] Optionally, a gasket is fixed to the inner wall of the arc-shaped block. The gasket is arc-shaped and made of rubber. Two sets of gaskets are provided and symmetrically distributed on the inner walls of the two sets of arc-shaped blocks.

[0009] Optionally, the enclosure component includes a top frame fixed to the top of the L-shaped plate, a folded fabric fixed to the inner wall of the top frame, a closing plate fixed to the bottom of the arc-shaped block, one end of the folded fabric fixed to the closing plate, an elastic rope fixed to the inner wall of the top frame, and the other end of the elastic rope fixed to the closing plate.

[0010] Optionally, a side plate is fixedly connected to the top of the second template, a sleeve block is fixedly connected to the top of the side plate, a rotating rod is rotatably connected to the inner wall of the sleeve block, a fixing plate is fixedly connected to one end of the rotating rod, and the fixing plate is disposed on one side of the L-shaped plate.

[0011] Optionally, the fixing assembly includes a hydraulic rod fixed to one side of the first template. A push plate is fixed to the top of the hydraulic rod, a rack is fixed to one side of the top of the push plate, a gear meshes with one side of the rack, a threaded rod is fixed to one end of the gear, a sleeve is fixed to one side of the first template, the sleeve is fitted onto the outer wall of the threaded rod, a nut is threaded onto the outer wall of the threaded rod, a clamping plate is fixed to one side of the nut, the clamping plate is located on one side of the second template, and a fitting pad is fixed to one side of the clamping plate. The threaded rod, nut, sleeve, clamping plate, and fitting pad are all provided in two sets and are symmetrically distributed on both sides of the gear. A limit structure is provided at the top of the sleeve.

[0012] Optionally, the limiting structure includes a cover plate, which is fixedly connected to the top of the sleeve. A circular plate is fixedly connected to one end of the cover plate, and one end of the threaded rod is rotatably connected to the circular plate. A slider is fixedly connected to the top of the nut, and the slider is slidably disposed at the top of the cover plate.

[0013] Optionally, two sets of side strips are fixed to one side of the first template, and the two sets of side strips are symmetrically distributed on both sides of the rack.

[0014] Optionally, a circular shell is fixed to one side of the first template, the circular shell is sleeved on the outer wall of the gear, and the rack is slidably disposed on the inner wall of the circular shell.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention addresses suspended scaffolding by compacting the backfill soil at the bottom to improve the support effect of the scaffolding steel pipes. By welding steel bars to the bottom, the contact area between the scaffolding steel pipes and the concrete is increased, ensuring a stable connection between the steel pipes and concrete after pouring. The reinforcement measures, including the pouring of concrete supports, reduce safety hazards and lower rework costs. Additionally, the installation of settlement monitoring points allows for regular monitoring to prevent further collapse at the bottom, thus solving the problem of easy subsidence at the bottom of the scaffolding. Furthermore, by setting up fixing components, the connection between the first and second templates can be reinforced to prevent cracking during concrete pouring. After concrete pouring, locking components can be used to lock the scaffolding steel pipes at the center of the first and second templates, maintaining their position and preventing them from tilting. By setting up closing components, the tops of the first and second templates can be closed after the scaffolding steel pipes are fixed, thereby sealing the top of the concrete and preventing external impurities from entering the concrete. This solves the problem of the scaffolding steel pipes easily shifting position during concrete pouring. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of a formwork component for a construction method of partial suspension reinforcement of steel pipe scaffolding; Figure 2 This is a schematic cross-sectional view of a formwork component for a construction method of partial suspension reinforcement of steel pipe scaffolding; Figure 3 for Figure 2 An enlarged structural diagram at point A; Figure 4 A schematic diagram of the locking and closing components of a construction method for partial suspension reinforcement of steel pipe scaffolding; Figure 5 A schematic diagram of the open structure of an L-shaped plate for a partial suspension reinforcement construction method of steel pipe scaffolding; Figure 6 This is a schematic diagram of the first and second template structures for a partial suspension reinforcement construction method for steel pipe scaffolding. Figure 7 This is a schematic diagram of the fixing component structure for a partial suspension reinforcement construction method of steel pipe scaffolding; Figure 8 A schematic diagram of a limiting structure for a partial suspension reinforcement construction method of steel pipe scaffolding; Figure 9 This is a schematic diagram of the construction location for a method of partially suspended reinforcement of steel pipe scaffolding.

[0017] Reference numerals: 1. First template; 2. Second template; 3. Insert block; 4. Slot; 5. Scaffolding steel pipe; 6. Reinforcing bar; 7. L-shaped plate; 8. Long rod; 9. Spring; 10. Arc-shaped block; 11. Gasket; 12. Top frame; 13. Folded cloth; 14. Enclosure plate; 15. Elastic rope; 16. Side plate; 17. Sleeve block; 18. Rotating rod; 19. Fixing plate; 20. Hydraulic rod; 21. Push plate; 22. Rack; 23. Gear; 24. Threaded rod; 25. Nut; 26. Clamping plate; 27. Sleeve; 28. Cover plate; 29. ​​Circular plate; 30. Slider; 31. Adhesive pad; 32. Side strip; 33. Circular shell. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 9 As shown, the present invention proposes a method for partial suspension reinforcement of steel pipe scaffolding, which includes the following steps: S1. First, treat the scaffolding foundation. In areas where the backfill soil has subsided, the broken pad layer above can be removed, then the backfill soil can be compacted, and a new concrete pad layer can be poured. If some of the foundation pad layer can be used, use a sledgehammer to knock the pad layer down to the backfill soil surface. S2. Weld Φ20 steel bars 6 to the bottom of the partially suspended scaffold steel pipe 5 by spot welding. The length of the steel bars 6 is 150mm. The steel bars 6 can increase the contact area between the steel pipe and the concrete. After welding, apply release agent to the steel pipe and steel bars 6. S3. Install the formwork assembly at the bottom of the scaffolding steel pipe 5. The formwork assembly is square in shape with a side length of 200mm. The height is determined according to the suspension height + 30mm. After the formwork is installed, pour concrete and mark the concrete as C25. S4. After the concrete has cured and reached its strength, the formwork components can be removed, and settlement observation points can be set on the top of the poured column pier. Construction personnel can regularly observe the column pier elevation to effectively prevent the poured column pier from collapsing.

[0020] like Figure 1 and Figure 6 As shown, the template assembly includes a first template 1. A plug 3 is fixed to one side of the first template 1, and a slot 4 is provided on the other side of the first template 1. The plug 3 and the slot 4 cooperate with each other to fix the position between the first template 1 and the second template 2. The second template 2 is provided on one side of the first template 1. The first template 1 and the second template 2 are perpendicularly distributed. A set of plugs 3 and a set of slots 4 are also provided on both sides of the second template 2. Scaffolding steel pipes 5 and steel bars 6 are inserted into the interior of the first template 1 and the second template 2.

[0021] like Figure 2 - Figure 5As shown, the template assembly also includes a locking component for maintaining the position of the scaffolding steel pipe 5 at the center of the template. The locking component includes an L-shaped plate 7, which is rotatably connected to the top of the first template 1 via a pivot. The locking component also includes a long rod 8, which is slidably disposed on one side of the L-shaped plate 7. A spring 9 is fixedly connected to one side of the L-shaped plate 7, and an arc-shaped block 10 is fixedly connected to one end of the spring 9. One end of the long rod 8 is fixedly connected to the arc-shaped block 10, which fits against the outer wall of the scaffolding steel pipe 5. Two sets of L-shaped plates 7, springs 9, long rods 8, and arc-shaped blocks 10 are provided and symmetrically distributed at the top of the two sets of the first template 1. When it is necessary to lock the position of the scaffolding steel pipe 5, the L-shaped plate 7 can be flipped to the top of the first template 1 via the pivot, and the long rod 8 can be pulled. The arc-shaped block 10 compresses the spring 9. After the L-shaped plate 7 is flipped, the two sets of long rods 8 can be released. When the two sets of long rods 8 are released, the two sets of arc-shaped blocks 10 can be pushed towards the center by the two sets of springs 9 until the two sets of arc-shaped blocks 10 contact the outer wall of the scaffold steel pipe 5. This allows the scaffold steel pipe 5 to be kept at the center of the first template 1 and the second template 2. The inner wall of the arc-shaped block 10 is fixed with a gasket 11. The gasket 11 is arc-shaped and made of rubber. There are two sets of gaskets 11, which are symmetrically distributed on the inner wall of the two sets of arc-shaped blocks 10. By setting the rubber gasket 11 on the inner wall of the arc-shaped block 10, the outer wall of the scaffold steel pipe 5 can be protected by the gasket 11 when the arc-shaped block 10 is clamped on the outer wall of the scaffold steel pipe 5.

[0022] like Figure 3 and Figure 4 As shown, one side of the L-shaped plate 7 is provided with a closing component for closing the top of the first template 1 and the second template 2. The closing component includes a top frame 12, which is fixed to the top of the L-shaped plate 7. A folded cloth 13 is fixed to the inner wall of the top frame 12. A closing plate 14 is fixed to the bottom of the arc-shaped block 10. One end of the folded cloth 13 is fixed to the closing plate 14. When the spring 9 pushes the arc-shaped block 10 to one side, it can drive the closing plate 14 at the bottom of the arc-shaped block 10 to move together. When the two sets of arc-shaped blocks 10 are closed on the outer wall of the scaffold steel pipe 5, the two sets of closing plates 14 can be closed at the same time. When the closing plate 14 moves, it will pull the folded cloth 13 on one side out from the top frame 12. After the folded cloth 13 is pulled out, the top of the first template 1 and the second template 2 can be closed, thereby avoiding external factors from affecting the solidification of concrete. An elastic rope 15 is fixed to the inner wall of the top frame 12. The other end of the elastic rope 15 is fixed to the closing plate 14.

[0023] like Figure 4As shown, a side plate 16 is fixed to the top of the second template 2. By setting the side plate 16 at the top of the second template 2, the two sides of the two sets of folded fabrics 13 can be closed. A sleeve block 17 is fixed to the top of the side plate 16. A rotating rod 18 is rotatably connected to the inner wall of the sleeve block 17. A fixing piece 19 is fixed to one end of the rotating rod 18. The fixing piece 19 is set on one side of the L-shaped plate 7. After the two sets of L-shaped plates 7 are flipped, the rotating rod can be rotated. When the rotating rod 18 rotates, it will drive the fixing pieces 19 on both sides to rotate together until the two sets of fixing pieces 19 are rotated to one side of the two sets of L-shaped plates 7, so that the position of the two sets of L-shaped plates 7 can be fixed.

[0024] like Figure 7 and Figure 8 As shown, a fixing component is provided on one side of the first template 1. The fixing component is used to fix the position between the first template 1 and the second template 2. The fixing component includes a hydraulic rod 20, which is fixed to one side of the first template 1. A push plate 21 is fixed to the top of the hydraulic rod 20, and a rack 22 is fixed to one side of the top of the push plate 21. When it is necessary to fix the connection between the first template 1 and the second template 2, the hydraulic rod 20 can be activated to push the push plate 21 upward. When the push plate 21 moves upward, it will drive the rack 22 at the top to move upward. A gear 23 meshes on one side of the rack 22. When the rack 22 moves, it will drive the rack 22 on one side to rotate. A threaded rod 24 is fixed to one end of the gear 23. When the rack 22 rotates, it will drive the threaded rod 24 on one side to rotate. A sleeve is fixed to one side of the first template 1. Sleeve 27 is fitted onto the outer wall of threaded rod 24. Nut 25 is threadedly connected to the outer wall of threaded rod 24. Clamping plate 26 is fixed to one side of nut 25. Clamping plate 26 is located on one side of second template 2. Adhesive pad 31 is fixed to one side of clamping plate 26. There are two sets of threaded rod 24, nut 25, sleeve 27, clamping plate 26 and adhesive pad 31, which are symmetrically distributed on both sides of gear 23. The rotation of threaded rod 24 can drive nut 25 and clamping plate 26 to move to one side of second template 2. Since there is also a set of threaded rod 24, nut 25 and clamping plate 26 on the other side of gear 23, the two sets of clamping plates 26 can be moved to the center at the same time, so that the two sets of clamping plates 26 clamp the second template 2, thereby making the installation between the first template 1 and the second template 2 stable. The top of sleeve 27 is provided with a limit structure.

[0025] like Figure 7 and Figure 8As shown, the limiting structure includes a cover plate 28, which is fixed to the top of the sleeve 27. A circular plate 29 is fixed to one end of the cover plate 28, and one end of the threaded rod 24 is rotatably connected to the circular plate 29. By setting the circular plate 29 on one side of the cover plate 28, the circular plate 29 can limit one end of the nut 25 when the threaded rod 24 rotates, preventing the nut 25 from coming off the threaded rod 24. A slider 30 is fixed to the top of the nut 25 and is slidably set on the top of the cover plate 28. When the nut 25 moves, it will drive the slider 30 set on its top to slide on the inner wall of the top cover, thereby limiting the movement of the nut 25 and the clamping plate 26.

[0026] like Figure 7 As shown, two sets of side strips 32 are fixed to one side of the first template 1. The two sets of side strips 32 are symmetrically distributed on both sides of the rack 22. By setting two sets of side strips 32 on one side of the first template 1, when the rack 22 moves up and down, it is convenient to limit the two sides of the rack 22 through the two sets of side strips 32, so that the rack 22 is kept on one side of the gear 23.

[0027] like Figure 1 and Figure 2 As shown, a circular shell 33 is fixed to one side of the first template 1. The circular shell 33 is sleeved on the outer wall of the gear 23, and the rack 22 is slidably disposed on the inner wall of the circular shell 33. By setting the circular shell 33 on one side of the first template 1, when the rack 22 drives the gear 23 to move, the connection between the gear 23 and the rack 22 can be protected by the side shell, preventing external factors from affecting the meshing of the gear 23 and the rack 22.

[0028] Working Principle: To address the issue of scaffolding steel pipe 5 easily shifting position during concrete pouring, when pouring concrete at the bottom of the scaffolding steel pipe 5, two sets of first templates 1 and two sets of second templates 2 can be spliced ​​together. The inserts 3 of the first template 1 are inserted into the slots 4 of the second template 2. After splicing, the two sets of first templates 1 and second templates 2 form a cube, and the first templates 1 and second templates 2 are fixed to the foundation pad. At this time, the scaffolding steel pipe 5, after being welded with reinforcing bars 6, is located between the first templates 1 and second templates 2. By activating the hydraulic rod 20, the push plate 21 is pushed upwards. As the push plate 21 moves upwards, it drives the top rack 22 upwards. As the rack 22 moves, it drives one side rack 22 to rotate. By setting two sets of side bars 32 on one side of the first template 1, it is convenient to rotate the rack 22 as it moves up and down. The rack 22 is kept on one side of the gear 23 by limiting the two sides of the gear 23. When the rack 22 rotates, it will drive the threaded rod 24 on one side to rotate. The rotation of the threaded rod 24 can drive the nut 25 and the clamping plate 26 to move towards the side of the second template 2. When the nut 25 moves, it will drive the slider 30 set at its top to slide on the inner wall of the top cover, thereby limiting the movement of the nut 25 and the clamping plate 26. By setting a circular plate 29 on one side of the cover plate 28, the nut 25 can be limited by the circular plate 29 when the threaded rod 24 rotates, preventing the nut 25 from coming off the threaded rod 24. Since the other side of the gear 23 is also provided with a set of threaded rod 24, nut 25 and clamping plate 26, the two sets of clamping plates 26 can be driven to move towards the center at the same time, so that the two sets of clamping plates 26 clamp the second template 2, thereby making the installation between the first template 1 and the second template 2 stable and preventing the first template 1 and the second template 2 from cracking when pouring concrete. After fixing the positions of the first template 1 and the second template 2, concrete can be added into the first template 1 and the second template 2. After pouring the concrete, the L-shaped plate 7 can be flipped to the top of the first template 1 through the pivot, and the long rod 8 can be pulled to compress the arc block 10 and the spring 9. After the L-shaped plate 7 is flipped, the two sets of long rods 8 can be released. When the two sets of long rods 8 are released, the two sets of arc blocks 10 can be pushed towards the center by the two sets of springs 9 until the two sets of arc blocks 10 contact the outer wall of the scaffold steel pipe 5. This can keep the scaffold steel pipe 5 in the center of the first template 1 and the second template 2 and prevent it from tilting. By setting a rubber pad 11 on the inner wall of the arc block 10, the outer wall of the scaffold steel pipe 5 can be protected by the pad 11 when the arc block 10 is clamped on the outer wall of the scaffold steel pipe 5. When the spring 9 pushes the arc block 10 to one side, it can drive the closing plate 14 at the bottom of the arc block 10 to move together. When the two sets of arc blocks 10 close to the outer wall of the scaffold steel pipe 5, the two sets of closing plates 14 can close at the same time. When the closing plate 14 moves, it will pull the folded cloth 13 on one side out from the top frame 12. After the folded cloth 13 is pulled out, the top of the first template 1 and the second template 2 can be closed, thereby avoiding external factors from affecting the solidification of concrete. By setting the side plate 16 at the top of the second template 2, the two sides of the two sets of folded cloth 13 can be closed. After the two sets of L-shaped plates 7 are flipped, the rotating rod can be rotated. When the rotating rod 18 rotates, it will drive the fixing plates 19 on both sides to rotate together until the two sets of fixing plates 19 are rotated to one side of the two sets of L-shaped plates 7, and the position of the two sets of L-shaped plates 7 can be fixed.

[0029] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A steel tubular scaffold partial cantilevered reinforcement construction method, characterized by, The method comprises the following steps: S1, treating the scaffold foundation, breaking the upper broken cushion layer in the area where the backfill soil appears subsidence, then tamping the backfill soil, re-pouring the concrete cushion layer, and knocking the cushion layer with a hammer to make it sink to the backfill soil surface for part of the foundation cushion layer; S2, welding a steel bar (6) at the bottom of the local suspended scaffold steel pipe (5) by spot welding, the length of the steel bar (6) is 120-200mm, the steel bar (6) can increase the contact area of the steel pipe and the concrete, and after welding, the steel pipe and the steel bar (6) are coated with release agent; S3, installing a formwork assembly at the bottom of the scaffold steel pipe (5), the shape of the formwork assembly is square, the side length is 150-300mm, after the formwork is installed, the concrete is poured, and the concrete is marked; S4, after the concrete solidifies and reaches the strength, the formwork assembly is removed, and a settlement observation point is set at the top of the poured column pier, and the column pier elevation is observed regularly by the construction personnel.

2. The local suspended reinforcement construction method of the steel pipe scaffold according to claim 1, the formwork assembly comprises a first formwork (1), one side of the first formwork (1) is fixedly connected with an insertion block (3), the other side of the first formwork (1) is provided with an insertion slot (4), one side of the first formwork (1) is provided with a second formwork (2), the first formwork (1) and the second formwork (2) are vertically distributed, both sides of the second formwork (2) are also provided with a group of insertion blocks (3) and a group of insertion slots (4), the scaffold steel pipe (5) and the steel bar (6) are inserted into the inside of the first formwork (1) and the second formwork (2), characterized in that: It further comprises a locking assembly for keeping the position of the scaffold steel pipe (5) at the center of the formwork, the locking assembly comprises an L-shaped plate (7), the L-shaped plate (7) is rotatably connected to the top end of the first formwork (1) through a rotating shaft; One side of the L-shaped plate (7) is provided with a closing assembly for closing the top end of the first formwork (1) and the second formwork (2); One side of the first formwork (1) is provided with a fixing assembly for fixing the position between the first formwork (1) and the second formwork (2).

3. The method according to claim 2, wherein The locking assembly further comprises a long rod (8), the long rod (8) is slidingly arranged on one side of the L-shaped plate (7), one side of the L-shaped plate (7) is fixedly connected with a spring (9), one end of the spring (9) is fixedly connected with an arc-shaped block (10), one end of the long rod (8) is fixedly connected to the arc-shaped block (10), the arc-shaped block (10) is attached to the outer wall of the scaffold steel pipe (5), the L-shaped plate (7), the spring (9), the long rod (8) and the arc-shaped block (10) are all provided with two groups and are symmetrically distributed at the top end of the two groups of first formworks (1).

4. The method according to claim 3, wherein The inner wall of the arc-shaped block (10) is fixedly connected with a gasket (11), the gasket (11) is arc-shaped in shape, the material of the gasket (11) is rubber, and the gasket (11) is provided with two groups and is symmetrically distributed on the inner wall of the two groups of arc-shaped blocks (10).

5. A method of reinforcing a partially cantilevered steel tube scaffold construction according to claim 4, wherein, The closed assembly comprises a top frame (12) fixed at the top end of the L-shaped plate (7), the inner wall of the top frame (12) is fixedly connected with a folding cloth (13), the bottom of the arc-shaped block (10) is fixedly connected with a closing plate (14), one end of the folding cloth (13) is fixedly connected on the closing plate (14), the inner wall of the top frame (12) is fixedly connected with an elastic rope (15), the other end of the elastic rope (15) is fixedly connected on the closing plate (14).

6. A method of locally reinforcing a steel tube scaffold according to claim 5, wherein The top end of the second template (2) is fixedly connected with a side plate (16), the top end of the side plate (16) is fixedly connected with a sleeve block (17), the inner wall of the sleeve block (17) is rotatably connected with a rotating rod (18), one end of the rotating rod (18) is fixedly connected with a fixed sheet (19), and the fixed sheet (19) is arranged on one side of the L-shaped plate (7).

7. A method of locally reinforcing a steel tube scaffold according to claim 6, wherein The fixing assembly comprises a hydraulic rod (20) fixed on one side of the first template (1), a push plate (21) fixed on the top end of the hydraulic rod (20), a rack (22) fixed on one side of the top end of the push plate (21), a gear (23) meshed on one side of the rack (22), a threaded rod (24) fixed on one end of the gear (23), a sleeve (27) fixed on one side of the first template (1), the sleeve (27) being sleeved on the outer wall of the threaded rod (24), a nut (25) threadedly connected on the outer wall of the threaded rod (24), a clamping plate (26) fixed on one side of the nut (25), the clamping plate (26) being arranged on one side of the second template (2), a matching pad (31) fixed on one side of the clamping plate (26), the threaded rod (24), the nut (25), the sleeve (27), the clamping plate (26) and the matching pad (31) being arranged in two groups and symmetrically distributed on both sides of the gear (23), and a limiting structure being arranged at the top end of the sleeve (27).

8. A method of locally reinforcing a steel tube scaffold according to claim 7, characterized in that, The limiting structure comprises a cover plate (28) fixed on the top end of the sleeve (27), a circular plate (29) fixed on one end of the cover plate (28), the threaded rod (24) being rotatably connected on one end of the circular plate (29), and a sliding block (30) fixed on the top end of the nut (25) and slidingly arranged on the top end of the cover plate (28).

9. A method of locally reinforcing a steel tube scaffold according to claim 8, characterized in that, One side of the first template (1) is fixedly connected with two groups of side strips (32), and the two groups of side strips (32) are symmetrically distributed on both sides of the rack (22).

10. The method of claim 9, wherein the steel tube scaffold is partially suspended and reinforced by the method. One side of the first template (1) is fixedly connected with a circular shell (33), the circular shell (33) is sleeved on the outer wall of the gear (23), and the rack (22) is slidingly arranged on the inner wall of the circular shell (33).

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