A narrow space cantilevered frame cantilevered structure and a construction method thereof

Abstract

The present application relates to the cantilever of outer frame, belongs to the technical field of cantilever of outer frame, specifically a narrow space cantilever cantilever structure of cantilever of outer frame and its construction method, including cast-in-place structure, the cast-in-place structure is attached with steel plate, a plurality of embedded bars are fixedly connected on the steel plate, a plurality of embedded bars are embedded in the cast-in-place structure, it also includes: support structure, the support structure is located on the steel plate, the embedded bar, the steel plate, the angle steel and the rib plate are welded into a whole, and are combined into embedded parts, according to the cantilever position of cantilever of outer frame, positioning installation embedded parts, closed formwork pours structure main body concrete, after the strength of cast-in-place structure reaches the standard, the steel is placed on the angle steel, and is welded with the angle steel, the cantilever is conveniently installed, the water stop piece is set, rainwater is effectively blocked into the building, the risk of leakage is reduced, the existing cable-stayed, under-braced cantilever inconvenient installation problem is solved.

Description

Technical Field

[0001] This invention relates to the field of cantilever scaffolding technology, and in particular to a cantilever scaffolding structure for confined spaces and its construction method. Background Technology

[0002] Cantilevered scaffolding is a commonly used safety and operational measure in the engineering field, and its application is very widespread. Conventional cantilevered scaffolding uses methods such as cantilever steel beams, diagonal bracing, and under-bracing for cantilever construction.

[0003] Based on existing technological findings: Existing cantilever steel beam construction methods require the cantilever beam to penetrate the building's exterior wall and be anchored to the interior floor slab. This creates openings in the walls and floors, damaging the main structure and increasing the risk of leakage. The diagonal-stayed and under-braced cantilever methods fix the cantilever beam to the outside of the structure without penetrating the wall, using diagonal bracing or under-bracing materials to transfer the load to the building structure, thus avoiding leakage risks. However, in confined building spaces, the installation of diagonal bracing and under-bracing materials can be inconvenient or impossible. Therefore, when constructing steel cantilever beams in confined spaces, this external scaffolding cantilever method avoids openings in the walls, preventing damage to the main structure and mitigating the risk of exterior wall leakage. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a cantilevered scaffold structure and its construction method for confined spaces. Pre-embedded reinforcing bars, steel plates, angle steel, and ribs are welded together to form a single embedded component. Based on the cantilevered position of the scaffold, the embedded component is positioned and installed. The formwork is then closed, and the main structural concrete is poured. Once the cast-in-place structure reaches the required strength, the steel sections are placed on the angle steel and welded to it, facilitating the installation of the cantilever. Furthermore, the use of waterstops effectively prevents rainwater from entering the building, reducing the risk of leakage.

[0005] The technical solution to achieve the purpose of this invention is as follows: a cantilevered external scaffolding structure in a confined space, comprising a cast-in-place structure, on which a steel plate is attached, and multiple embedded reinforcing bars are fixedly connected to the steel plate, all of which are embedded within the cast-in-place structure, and further comprising: Support structure, which is located on a steel plate; The supporting structure includes angle steel fixedly connected to a steel plate, ribs fixedly connected to the angle steel, and structural steel fixedly connected to the top of the angle steel. Waterstop plates are fixedly connected to multiple embedded ribs, and multiple waterstop plates are embedded in the cast-in-place structure. The structural steel is an I-beam.

[0006] In some embodiments, the angle steel and the steel plate together have multiple welds.

[0007] In some embodiments, a fixed track is fixedly connected to the rib plate, and two sliders are slidably connected on the fixed track. A fixed rod is fixedly connected to the top of each slider, and a connecting rod is fixedly connected to both ends of each fixed rod. Multiple slotted holes are provided on the angle steel, and the top ends of the multiple connecting rods pass through the multiple slotted holes and are fixedly connected to clamping blocks.

[0008] In some embodiments, a frame-shaped waterstop is fixedly connected to the steel plate, and the frame-shaped waterstop is embedded in the cast-in-place structure.

[0009] In some embodiments, a bidirectional threaded rod is rotatably connected to the fixed track, and both sliders are screwed onto the bidirectional threaded rod.

[0010] In some embodiments, a crank handle is fixedly connected to one end of the bidirectional threaded rod.

[0011] In some embodiments, each of the multiple clamping blocks is provided with a movable groove, and each of the multiple movable grooves is slidably connected with a pressure block. Each of the multiple movable grooves is provided with a compression spring, and the two ends of the compression spring are respectively fixedly connected to the clamping block and the pressure block.

[0012] In some embodiments, both ends of the fixed track are fixedly connected to fixed columns, and the tops of the two fixed columns are fixedly connected to angle steel.

[0013] This invention also discloses a construction method for a cantilevered scaffold structure in a confined space. This method, based on a cantilevered scaffold structure in a confined space, includes the following steps: Step 1: Weld the embedded bars, steel plates, angle steel and ribs into a whole and assemble them into embedded parts. Position and install the embedded parts according to the cantilever position of the cantilevered scaffold. Step 2: Construct the main structural concrete by sealing the formwork, and wait for the strength of the cast-in-place structure to reach the standard; Step 3: Place the steel section on the angle steel and weld it to the angle steel.

[0014] The significant advantages of this invention compared to existing technologies are: Firstly, this invention welds pre-embedded reinforcing bars, steel plates, angle steel, and ribs into a whole and assembles them into pre-embedded parts. According to the cantilever position of the cantilevered scaffold, the pre-embedded parts are positioned and installed. The formwork is closed and the main structural concrete is poured. After the strength of the cast-in-place structure reaches the standard, the steel sections are placed on the angle steel and welded to the angle steel, which facilitates the installation of the cantilever. The water-stop plate effectively prevents rainwater from entering the building and reduces the risk of leakage. Secondly, the present invention rotates the handle to drive the bidirectional threaded rod to rotate, the bidirectional threaded rod to drive the two sliders to move, the sliders to drive the fixed rod and the connecting rod, the connecting rod to drive the clamping block to move, and the clamping blocks on both sides to move closer to each other, which can center and pre-fix the steel section, thereby positioning the steel section and improving the welding effect of the steel section. Thirdly, during the clamping process of the steel profile, the pressure block can move onto the steel profile, causing the pressure block to move upward. The movement of the pressure block drives the compression spring to compress and undergo elastic deformation, thereby clamping the steel profile and improving the pre-fixing effect of the steel profile, thus improving the stability of the steel profile. This solves the problem of inconvenient installation of existing inclined and under-braced cantilever structures. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall cross-sectional structure provided in one embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the angle steel and rib plate provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the overall three-dimensional structure provided in two embodiments of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the steel plate and frame-shaped waterstop provided in two embodiments of the present invention; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the fixed track provided in two embodiments of the present invention; Figure 6 This is a schematic diagram of the internal cross-sectional structure of the clamping block provided in two embodiments of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Cast-in-place structure; 11. Embedded reinforcement; 12. Steel plate; 13. Angle steel; 14. Rib plate; 15. Section steel; 16. Weld; 17. Waterstop plate; 2. Fixed track; 21. Two-way threaded rod; 22. Handle; 23. Slider; 24. Fixed rod; 25. Connecting rod; 26. Clamping block; 27. Movable groove; 28. Pressure block; 29. ​​Compression spring; 210. Fixed column; 211. Strip hole; 3. Frame-shaped waterstop plate. Detailed Implementation

[0017] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention provides an improved cantilevered scaffold structure for confined spaces and its construction method. The technical solution of this invention is as follows: Example

[0019] like Figures 1-2 As shown, a cantilevered scaffolding structure in a confined space includes a cast-in-place structure 1, on which a steel plate 12 is attached. Multiple embedded reinforcing bars 11 are fixedly connected to the steel plate 12, all embedded within the cast-in-place structure 1. The structure also includes a support structure located on the steel plate 12. The support structure includes angle steel 13 fixedly connected to the steel plate 12, with ribs 14 fixedly connected to the angle steel 13. A structural steel 15 is fixedly connected to the top of the angle steel 13. Waterstop plates 17 are fixedly connected to each of the embedded reinforcing bars 11, all embedded within the cast-in-place structure 1. Steel 13 and steel plate 12 are provided with multiple welds 16, and the steel section 15 is an I-beam. By setting the embedded reinforcement 11, the embedded reinforcement 11, steel plate 12, angle steel 13 and rib plate 14 are welded into a whole and combined into an embedded part. According to the cantilever position of the cantilevered external scaffold, the embedded part is positioned and installed. The formwork is closed and the main concrete of the structure is poured. After the strength of the cast-in-place structure 1 reaches the standard, the steel section 15 is placed on the angle steel 13 and welded to the angle steel 13, which facilitates the installation of the cantilever. By setting the waterstop plate 17, rainwater is effectively blocked from entering the building, reducing the risk of leakage. Example

[0020] like Figures 3-6 As shown, a fixed rail 2 is fixedly connected to the rib plate 14, and two sliders 23 are slidably connected to the fixed rail 2. A fixed rod 24 is fixedly connected to the top of each slider 23, and a connecting rod 25 is fixedly connected to both ends of each fixed rod 24. Multiple slotted holes 211 are opened on the angle steel 13. The top ends of the multiple connecting rods 25 pass through the multiple slotted holes 211 and are fixedly connected to clamping blocks 26. A bidirectional threaded rod 21 is rotatably connected to the fixed rail 2, and the two sliders 23 are screwed onto the bidirectional threaded rod 21. With the clamping blocks 26, rotating the bidirectional threaded rod 21 drives the two sliders 23 to move. The movement of the sliders 23 drives the fixed rod 24 and the connecting rod 25. The movement of the connecting rod 25 drives the clamping blocks 26 to move. The clamping blocks 26 on both sides move closer to each other, which can center and pre-fix the steel section 15, thereby positioning the steel section 15 and improving the welding effect of the steel section 15.

[0021] like Figure 4 As shown, in one embodiment, a frame-shaped waterstop 3 is fixedly connected to the steel plate 12, and the frame-shaped waterstop 3 is embedded in the cast-in-place structure 1; the setting of the frame-shaped waterstop 3 improves the effect of preventing rainwater leakage.

[0022] like Figure 5As shown, in one embodiment, a crank handle 22 is fixedly connected to one end of the bidirectional threaded rod 21; the crank handle 22 facilitates the rotation of the bidirectional threaded rod 21.

[0023] like Figure 6 As shown, in one embodiment, each of the multiple clamping blocks 26 has a movable groove 27, and each of the multiple movable grooves 27 is slidably connected to a pressure block 28. Each of the multiple movable grooves 27 is provided with a compression spring 29, and the two ends of the compression spring 29 are fixedly connected to the clamping block 26 and the pressure block 28, respectively. With the setting of the pressure block 28, during the clamping process of the profile 15, the pressure block 28 can move onto the profile 15, so that the pressure block 28 moves upward. The movement of the pressure block 28 drives the compression spring 29 to compress and undergo elastic deformation, thereby pressing the profile 15, improving the pre-fixing effect of the profile 15, and thus improving the stability of the profile 15.

[0024] like Figure 5 As shown, in one embodiment, both ends of the fixed track 2 are fixedly connected to fixed columns 210, and the tops of the two fixed columns 210 are fixedly connected to the angle steel 13; the stability of the fixed track 2 is improved by setting the fixed columns 210. Example

[0025] This embodiment discloses a construction method for a cantilevered scaffold structure in a confined space. The method, based on a cantilevered scaffold structure in a confined space, includes the following steps: Step 1: Weld the embedded rib 11, steel plate 12, angle steel 13 and rib plate 14 into a whole and assemble them into an embedded part. Position and install the embedded part according to the cantilever position of the cantilevered scaffold. Step 2: Construct the main structural concrete by sealing the formwork, and wait for the strength of the cast-in-place structure 1 to reach the standard; Step 3: Place the section steel 15 on the angle steel 13 and weld it to the angle steel 13.

[0026] The specific working method is as follows: Weld the embedded reinforcement 11, steel plate 12, angle steel 13, and rib plate 14 into a whole and assemble them into an embedded part. According to the cantilever position of the cantilevered scaffold, position and install the embedded part, close the formwork and pour the main concrete of the structure. After the strength of the cast-in-place structure 1 reaches the standard, place the steel section 15 on the angle steel 13 and weld it to the angle steel 13. Then weld the positioning reinforcement of the scaffold uprights on the steel section 15 and erect the scaffold. Turn the crank handle 22 to drive the double-threaded rod 21 to rotate. The rotation of the double-threaded rod 21 drives the two sliders 23 to move. The movement of the sliders 23 drives the fixed... The fixed rod 24 and the connecting rod 25 move, which drives the clamping block 26 to move. The clamping blocks 26 on both sides move closer to each other, which can center and pre-fix the steel section 15, thereby positioning the steel section 15 and improving the welding effect of the steel section 15. During the clamping process of the steel section 15, the pressure block 28 can move onto the steel section 15, causing the pressure block 28 to move upward. The movement of the pressure block 28 drives the compression spring 29 to compress and undergo elastic deformation, thereby pressing the steel section 15, improving the pre-fixing effect of the steel section 15, and thus improving the stability of the steel section 15.

[0027] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A cantilever structure of a narrow space cantilever scaffold, comprising a cast-in-situ structure (1), characterized in that: A steel plate (12) is attached to the cast-in-place structure (1), and multiple embedded bars (11) are fixedly connected to the steel plate (12). The multiple embedded bars (11) are all embedded in the cast-in-place structure (1), and the structure also includes: A supporting structure located on a steel plate (12); The supporting structure includes an angle steel (13) fixedly connected to a steel plate (12), a rib plate (14) fixedly connected to the angle steel (13), a section steel (15) fixedly connected to the top of the angle steel (13), and a waterstop plate (17) fixedly connected to each of the multiple embedded ribs (11), and the multiple waterstop plates (17) are all embedded in the cast-in-place structure (1).

2. The cantilevered external scaffolding structure in a confined space according to claim 1, characterized in that: The angle steel (13) and the steel plate (12) are provided with multiple welds (16), and the section steel (15) is an I-beam.

3. The cantilevered external scaffolding structure in a confined space according to claim 2, characterized in that: A fixed track (2) is fixedly connected to the rib plate (14), and two sliders (23) are slidably connected to the fixed track (2). A fixed rod (24) is fixedly connected to the top of each slider (23), and a connecting rod (25) is fixedly connected to both ends of each fixed rod (24). Multiple strip holes (211) are opened on the angle steel (13), and the top ends of the multiple connecting rods (25) pass through the multiple strip holes (211) and are fixedly connected to clamps (26).

4. The cantilevered external scaffolding structure in a confined space according to claim 3, characterized in that: A bidirectional threaded rod (21) is rotatably connected to the fixed track (2), and two sliders (23) are screwed onto the bidirectional threaded rod (21).

5. The cantilevered external scaffolding structure in a confined space according to claim 4, characterized in that: A frame-shaped waterstop plate (3) is fixedly connected to the steel plate (12), and the frame-shaped waterstop plate (3) is embedded in the cast-in-place structure (1).

6. The cantilevered external scaffolding structure in a confined space according to claim 4, characterized in that: A crank handle (22) is fixedly connected to one end of the bidirectional threaded rod (21).

7. The cantilevered external scaffolding structure in a confined space according to claim 6, characterized in that: Each of the clamping blocks (26) has a movable groove (27), and each of the movable grooves (27) has a pressure block (28) slidably connected to it. Each of the movable grooves (27) has a compression spring (29), and the two ends of the compression spring (29) are fixedly connected to the clamping block (26) and the pressure block (28) respectively.

8. The cantilevered external scaffolding structure in a confined space according to claim 7, characterized in that: The fixed rail (2) is fixedly connected to fixed columns (210) at both ends, and the tops of the two fixed columns (210) are fixedly connected to angle steel (13).

9. A construction method for a cantilevered scaffold structure in a confined space, the method being applied to the cantilevered scaffold structure in a confined space as described in any one of claims 1-8, characterized in that: Includes the following steps: Step 1: Weld the embedded reinforcement (11), steel plate (12), angle steel (13) and rib plate (14) into a whole and assemble them into embedded parts. Position and install the embedded parts according to the cantilever position of the cantilevered scaffold. Step 2: Close the formwork and pour the main concrete of the structure, waiting for the strength of the cast-in-place structure (1) to reach the standard; Step 3: Place the section steel (15) on the angle steel (13) and weld it to the angle steel (13).

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