Cantilever scaffold I-steel fixing device for plate descending area of toilet of high-rise residence

Abstract

The utility model provides a cantilever scaffold I-shaped steel fixing device for a plate descending area of a toilet of a high-rise residence. The cantilever scaffold I-shaped steel fixing device comprises cantilever scaffold I-shaped steel, a concrete column pier and a supporting structure. The supporting structure is fixedly arranged on a concrete beam of a floor balcony so as to support scaffold I-shaped steel; the scaffold I-shaped steel is flatly laid on a floor in the horizontal direction, and the scaffold I-shaped steel is fixed to a floor plate through concrete column piers and M20U-shaped bolts. The cantilever scaffold I-shaped steel fixing device can be used for fixing and installing cantilever scaffold I-shaped steel in a plate descending area of a toilet of a high-rise building, and the structure is easy, convenient and practical to operate, small in occupied space, free of penetrating through an inner wall, small in influence on the appearance quality of the structure, stable and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of cantilever frame I-steel fixing structures of high-rise residential buildings, in particular to a cantilever scaffolding I-steel fixing device used in a drop-down area of a high-rise residential bathroom. Background Art

[0002] With the increasing development of urban socioeconomics, newly constructed commercial and residential complexes have become a popular leisure and entertainment destination for modern residents. These complexes are characterized by increasingly deeper underground floors and higher above-ground floors. Currently, most construction sites utilize cantilevered I-beam scaffolding for external protection. The fixed end of the I-beam is placed on the interior beam slab of each floor, while the cantilevered side, depending on construction requirements, is positioned outside the building facade, serving as a reliable support point for the lower portion of the ground-mounted external scaffolding. Most bathrooms in high-rise buildings utilize a drop-down slab, with a height of 280mm and located close to the interior walls. Some balconies have longer I-beams on the floors, inevitably placing them within the drop-down slab. The height of existing support U-bolts on the market does not meet the requirements for the on-site drop-down zone, and the extended I-beam would penetrate the interior building wall, impacting the installation and turnover of the aluminum formwork and the quality of the interior wall finish. Therefore, a targeted structural design for the bathroom drop-down fixture is necessary. Utility Model Content

[0003] In response to the deficiencies in the prior art, the utility model provides a cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom, which solves the problem of fixing the cantilever scaffolding I-beam in the drop-down area of a bathroom during the construction of the main structure of a high-rise residential building.

[0004] The utility model achieves the above technical objectives through the following technical means.

[0005] A cantilever scaffolding I-beam fixing device for use in the lowered floor area of a high-rise residential bathroom comprises a supporting structure arranged between a concrete beam of a floor balcony and the cantilevered end of the cantilever scaffolding I-beam; the cantilever scaffolding I-beam is laid horizontally on the floor slab, the other end of the cantilever scaffolding I-beam is fixed to the floor slab via a concrete column pier, M20U-type bolts and a matching pressure plate, and the remaining parts of the cantilever scaffolding I-beam are directly fixed to the floor slab via M20U-type bolts and a matching pressure plate.

[0006] Furthermore, the supporting structure includes a steel pull rod and a steel lower support. One end of the steel pull rod is bolted to the ear plate on the cantilevered end of the I-beam of the cantilever scaffolding, and the other end is connected to the beam plate of the upper floor; one end of the steel lower support is welded to the bottom of the cantilevered end of the I-beam of the cantilever scaffolding, and the other end is connected to the steel embedded part on the beam plate of the next floor.

[0007] Furthermore, the concrete column piers are cast together with the floor slab concrete, and the concrete grades are consistent.

[0008] Furthermore, the concrete pier includes vertical steel bars, horizontal stirrups and horizontal positioning bars; the bottom ends of the vertical steel bars extend into the floor slab and are firmly welded to the floor slab steel bars; there are no less than three horizontal stirrups, and two horizontal positioning bars are placed on the horizontal stirrups and are firmly welded to them; two M20U-type bolts are opened upward, and their lower parts are placed under the two horizontal positioning bars and are welded to the horizontal positioning bars; the cantilever scaffolding I-beam is placed between the matching pressure plate at the opening of the M20U-type bolt and the concrete pier, and is fastened by tightening the nuts on the M20U-type bolts.

[0009] Furthermore, the number of vertical steel bars in the pier is four corner bars + eight middle bars, the length of the bent anchor of the bottom end of the pier vertical steel bar extending into the floor slab is not less than 35d, and the length of the straight section of the top end of the pier vertical steel bar is not less than 12d, where d represents the diameter of the pier vertical steel bar.

[0010] Furthermore, wooden wedges are provided between the two sides of the I-beam of the cantilever scaffolding and the M20U-bolts.

[0011] The utility model has the following beneficial effects:

[0012] The cantilever scaffolding I-beam fixing device provided by the utility model can effectively realize the reliable installation of the cantilever frame I-beam in the drop-down area of the bathroom of a high-rise residential building, thereby bearing the load of the five-story scaffolding steel pipe rod; the structure is simple and practical to operate, occupies a small space, does not require passing through the inner wall aluminum alloy formwork, does not need to increase the length of the I-beam, saves materials, is stable and reliable, and has little impact on the appearance quality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cantilevered scaffolding I-beam and building structure in the drop-down area of a high-rise residential bathroom;

[0014] Figure 2 This is a schematic diagram of using M20U bolts to fix the I-beam of the cantilever scaffolding;

[0015] In the figure: 1. Concrete column pier; 11. Vertical reinforcement of column pier; 12. Horizontal stirrups of column pier; 13. Horizontal positioning reinforcement of column pier; 14. Wooden wedge; 2. M20 U-bolt; 3. I-beam of cantilever scaffolding; 4. Steel tie rod; 5. Ear plate; 6. Steel support; 7. Embedded steel parts; 8. Floor slab; 81. Floor slab reinforcement. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0017] The utility model discloses a cantilever scaffolding I-beam fixing device for a drop-down area of a high-rise residential bathroom, comprising a cantilever scaffolding I-beam 3, a concrete column pier 1 (including ribbed steel bars and round steel U-shaped rings), and a supporting structure.

[0018] like Figure 1 As shown, the support structure is fixed to the concrete beam of the balcony, supporting the cantilevered scaffolding I-beam 3. The support structure includes steel tie rods 4 and steel bottom braces 6. One end of the steel tie rod 4 is bolted to the lug 5 on the cantilevered end of the cantilevered scaffolding I-beam 3, and the other end is connected to the beam slab of the upper floor. One end of the steel bottom brace 6 is welded to the bottom of the cantilevered end of the cantilevered scaffolding I-beam 3, and the other end is connected to the steel embedded fitting 7 on the beam slab of the lower floor. The steel tie rods 4 are M20 round steel, and the steel bottom brace 6 is 12a# channel steel.

[0019] like Figure 1 、 2 As shown, the cantilever scaffolding I-beam 3 is a No. 16 I-beam, which is close to the top surface of the floor slab 8; the cantilever scaffolding I-beam 3 is laid flat on the floor in the horizontal direction, and the end of the cantilever scaffolding I-beam 3 located in the drop-down area is fixed to the floor slab 8 through a concrete column pier 1, M20U-type bolts 2 and their matching pressure plates, and wooden wedges 14, and the remaining parts of the cantilever scaffolding I-beam 3 are directly fixed to the floor slab 8 through M20U-type bolts 2 and their matching pressure plates, and wooden wedges 14.

[0020] The concrete pier 1 has a side length of 600mm and a height of 280mm. It is poured together with the concrete of the floor slab 8. The concrete grade is the same, both C30, and construction joints are not allowed.

[0021] like Figure 1 、 2 As shown, the concrete column 1 includes vertical reinforcement bars 11 (HRB400 Φ18), horizontal stirrups 12 (HRB400 Φ10), and horizontal locating bars 13 (HRB400 Φ18). The bottom end of the vertical reinforcement bars 11 extends into the floor slab 8 for a bend anchor length of no less than 35d (d represents the diameter of the vertical reinforcement bars 11) and is securely welded to the floor slab reinforcement bars 81 (HRB400 Φ8-Φ10). The straight section at the top of the vertical reinforcement bars 11 is no less than 12d long. The number of vertical reinforcement bars 11 in the column slab consists of four corner bars and eight center bars. Two M20 U-bolts 2 are located within the concrete column 1. These, in conjunction with wooden wedges 14 and a pressure plate, secure the cantilever scaffolding I-beam 3 to the concrete column 1, and the cantilever scaffolding I-beam 3 to the floor slab 8.

[0022] like Figure 2As shown, there are no less than three column pier horizontal stirrups 12, two column pier horizontal positioning bars 13 are placed on the middle column pier horizontal stirrups 12 and welded firmly therewith, and M20 U-bolts 2 are placed under the two column pier horizontal positioning bars 13 and welded firmly therewith.

[0023] The embodiments described are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, replacements or modifications that can be made by those skilled in the art without departing from the essential content of the present invention are within the scope of protection of the present invention.

Claims

1. A cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom, characterized in that: The invention comprises a supporting structure arranged between a concrete beam of a floor balcony and a cantilevered end of a cantilever scaffolding I-beam (3); the cantilever scaffolding I-beam (3) is laid flat on a floor plate (8) in a horizontal direction, the other end of the cantilever scaffolding I-beam (3) is fixed to the floor plate (8) through a concrete column pier (1), an M20U-type bolt (2) and a matching pressure plate, and the remaining part of the cantilever scaffolding I-beam (3) is directly fixed to the floor plate (8) through an M20U-type bolt (2) and a matching pressure plate.

2. The cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom according to claim 1 is characterized in that: The supporting structure comprises a steel tie rod (4) and a steel lower support (6); one end of the steel tie rod (4) is bolted to an ear plate (5) on a cantilevered end of an I-beam (3) of a cantilever scaffolding, and the other end is connected to a beam plate of an upper floor; one end of the steel lower support (6) is welded to the bottom of the cantilevered end of the I-beam (3) of the cantilever scaffolding, and the other end is connected to a steel embedded part (7) on a beam plate of a lower floor.

3. The cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom according to claim 1 is characterized in that: The concrete column pier (1) and the floor slab (8) are poured together, and the concrete grades are consistent.

4. The cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom according to claim 1 is characterized in that: The concrete column pier (1) comprises a column pier vertical steel bar (11), a column pier horizontal stirrup (12), and a column pier horizontal positioning bar (13); the bottom end of the column pier vertical steel bar (11) extends into the floor plate (8) and is firmly welded to the floor plate steel bar (81); there are no less than three column pier horizontal stirrups (12), and two column pier horizontal positioning bars (13) are placed on the column pier horizontal stirrups (12) and firmly welded to them; two M20U-type bolts (2) are opened upward, and their lower parts are placed on the lower parts of the two column pier horizontal positioning bars (13) and are welded to the column pier horizontal positioning bars (13); a cantilever scaffolding I-beam (3) is placed between a matching pressure plate at the opening of the M20U-type bolt (2) and the concrete column pier (1), and is fastened by tightening the nuts on the M20U-type bolts (2).

5. The cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom according to claim 4 is characterized in that: The number of the column pier vertical steel bars (11) is four corner bars + eight middle bars. The length of the bent anchor of the bottom end of the column pier vertical steel bar (11) extending into the floor slab (8) is not less than 35d, and the length of the straight section of the top end of the column pier vertical steel bar (11) is not less than 12d, where d represents the diameter of the column pier vertical steel bar (11).

6. The cantilever scaffolding I-beam fixing device for the drop-down area of a high-rise residential bathroom according to claim 4 is characterized in that: Wooden wedges (14) are also provided between the webs on both sides of the cantilever scaffolding I-steel (3) and the M20 U-shaped bolts (2).

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