Cantilever scaffold structure at corner part of building

Abstract

The utility model provides an overhanging scaffold structure at a building corner part. The overhanging scaffold structure comprises a profile steel main beam embedded part, a pull lug embedded part, a plurality of profile steel main beams, a plurality of external corner attachment beams, a plurality of turnbuckles and a scaffold, the profile steel main beam embedded part is connected to a first position of the structural floor slab; the pull lug embedded part is connected to a second position of the structural floor slab, and the second position is higher than the first position; one end of the profile steel main beam is fixedly connected to the profile steel main beam embedded part, and the other end of the profile steel main beam extends towards the outer side of the structural floor slab; the external corner attachment beams are connected with a plurality of profile steel main beams; one end of the turnbuckle is connected to the profile steel main beam, and the other end of the turnbuckle is connected to the pull lug embedded part; and the scaffold is mounted and connected to the external corner attachment beam.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and more particularly to a cantilevered scaffolding structure at a corner of a building. Background Art

[0002] Scaffolding is a type of support erected on construction sites to facilitate vertical and horizontal transportation for workers. It primarily serves as a means for workers to ascend and descend, provide safety nets for external structures, and install components at height. In some construction sites, floor-standing scaffolding is not feasible due to building clearances or terrain restrictions. Consequently, cantilever scaffolding has emerged. However, existing cantilever scaffolding suffers from poor overall structural stability. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] The technical problem to be solved by the utility model is that the existing cantilever scaffolding has the problem of poor overall structural stability.

[0005] (2) Technical solution

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model provides a cantilever scaffolding structure at the corner of a building, comprising a steel main beam embedded part, a pull ear embedded part, multiple steel main beams, multiple external angle attachment beams, multiple basket screws and a scaffolding; the steel main beam embedded part is connected to a first position of a structural floor; the pull ear embedded part is connected to a second position of the structural floor, and the second position is higher than the first position; one end of the steel main beam is fastened to the steel main beam embedded part, and the other end of the steel main beam extends to the outside of the structural floor; the external angle attachment beam is connected to multiple steel main beams; one end of the basket screw is connected to the steel main beam, and the other end of the basket screw is connected to the pull ear embedded part; and the scaffolding is installed and connected to the external angle attachment beam.

[0008] Preferably, the scaffolding includes multiple external poles, multiple large cross bars and fasteners. The external poles are installed and connected to the external angle attachment beams. The fasteners are fastened to connect the external poles and the large cross bars so that multiple external poles and multiple large cross bars are connected to form a cross-staggered frame structure.

[0009] Preferably, it also includes a mounting plate, a base plate, a positioning column and fasteners, the external angle attachment beam is an I-beam, the fasteners fasten the mounting plate and the base plate so that the mounting plate and the base plate clamp the flange of the I-beam, the positioning column is fixedly connected to the mounting plate, and the positioning column is inserted into the outer column.

[0010] Preferably, the basket screw includes an upper pull rod, a lower pull rod and a sleeve, one end of the upper pull rod is connected to the pull ear embedded part, the other end of the upper pull rod is connected to the sleeve, one end of the lower pull rod is connected to the steel main beam, and the other end of the lower pull rod is connected to the sleeve.

[0011] Preferably, the upper pull rod is threadedly connected to the sleeve, and the lower pull rod is threadedly connected to the sleeve.

[0012] Preferably, the upper pull rod has a first threaded segment, the lower pull rod has a second threaded segment, the first threaded segment is connected to the sleeve, the second threaded segment is connected to the sleeve, and the thread direction of the first threaded segment is opposite to that of the second threaded segment.

[0013] Preferably, the embedded part of the steel main beam includes a bolt sleeve and a screw rod, the bolt sleeve has a threaded hole, the first end of the screw rod is threadedly connected to the threaded hole, and the other end of the screw rod extends out of the bolt sleeve.

[0014] Preferably, the pull ear embedded part includes a bolt sleeve and a double-ear pull ring rod, the bolt sleeve has a threaded hole, one end of the double-ear pull ring rod is threadedly connected to the threaded hole, and the other end of the double-ear pull ring rod has a connecting portion for connecting to the basket screw.

[0015] Preferably, the distance between two adjacent steel main beams is not less than 200 mm.

[0016] Preferably, the steel main beam and the external angle attachment beam are both steel beams.

[0017] (3) Beneficial effects

[0018] The above technical solution of the present utility model has at least the following advantages: BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the arrangement of the positive corner positions provided by an embodiment of the present utility model.

[0021] Figure 2 It is a schematic diagram of the connection structure of the steel main beam, the pull ear embedded parts, and the basket screw provided by the embodiment of the present utility model.

[0022] Figure 3It is a large cross-sectional view of the external scaffolding structure provided by an embodiment of the present utility model.

[0023] Figure 4 This is a structural drawing of the positioning foot provided in an embodiment of the utility model.

[0024] Figure 5 It is a structural schematic diagram of a bolt sleeve provided by an embodiment of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the upper pull rod provided in an embodiment of the utility model.

[0026] The reference numerals in the figures are:

[0027] 100. Structural floor; 1. Embedded parts for steel main beam; 2. Embedded parts for lugs; 3. Steel main beam; 4. External angle attachment beam; 5. Turnbuckle screw; 6. Scaffolding; 7. Mounting plate; 8. Base plate; 9. Positioning column; 10. Fastener; 11. Bolt sleeve; 111. Threaded hole; 12. Screw; 51. Upper tie rod; 52. Lower tie rod; 53. Sleeve; 61. External pole; 62. Large cross bar; 63. Fastener. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate relative importance or the number of technical features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined. The following is a more detailed description of the specific implementation of this utility model in conjunction with specific embodiments:

[0032] like Figure 1 As shown, an embodiment of the utility model provides a cantilever scaffolding structure at the corner of a building, comprising a steel main beam embedded part 1, a pull ear embedded part 2, multiple steel main beams 3, multiple external angle attachment beams 4, multiple basket screws 5 and a scaffolding 6; the steel main beam embedded part 1 is connected to a first position of the structural floor 100; the pull ear embedded part 2 is connected to a second position of the structural floor 100, and the second position is higher than the first position; one end of the steel main beam 3 is fastened to the steel main beam embedded part 1, and the other end of the steel main beam 3 extends to the outside of the structural floor 100; the external angle attachment beam 4 connects multiple steel main beams 3; one end of the basket screw 5 is connected to the steel main beam 3, and the other end of the basket screw 5 is connected to the pull ear embedded part 2; the scaffolding 6 is installed and connected to the external angle attachment beam 4.

[0033] As one of the optional implementations of this embodiment, the scaffolding 6 includes multiple external poles 61, multiple large cross bars 62 and fasteners 63. The external poles 61 are installed and connected to the external corner attachment beams 4. The fasteners 63 fasten the external poles 61 and the large cross bars 62 to connect the multiple external poles 61 and the multiple large cross bars 62 to form a cross-staggered frame structure.

[0034] As one of the optional implementations of this embodiment, it also includes a mounting plate 7, a base plate 8, a positioning column 9 and a fastener 10. The external angle attachment beam 4 is an I-beam. The fastener 10 fastens the mounting plate 7 and the base plate 8 so that the mounting plate 7 and the base plate 8 clamp the flange of the column I-beam. The positioning column 9 is fixedly connected to the mounting plate 7, and the positioning column 9 is inserted into the external column 61.

[0035] As one of the optional implementations of this embodiment, the basket screw 5 includes an upper pull rod 51, a lower pull rod 52 and a sleeve 53. One end of the upper pull rod 51 is connected to the pull ear embedded part 2, and the other end of the upper pull rod 51 is connected to the sleeve 53. One end of the lower pull rod 52 is connected to the steel main beam 3, and the other end of the lower pull rod 52 is connected to the sleeve 53.

[0036] As one of the optional implementations of this embodiment, the upper pull rod 51 is threadedly connected to the sleeve 53 , and the lower pull rod 52 is threadedly connected to the sleeve 53 .

[0037] As one of the optional implementations of this embodiment, the upper pull rod 51 has a first threaded segment, the lower pull rod 52 has a second threaded segment, the first threaded segment is connected to the sleeve 53, the second threaded segment is connected to the sleeve 53, and the thread direction of the first threaded segment is opposite to the thread direction of the second threaded segment.

[0038] As one of the optional implementations of this embodiment, the embedded part 1 of the steel main beam includes a bolt sleeve 11 and a screw 12. The bolt sleeve 11 has a threaded hole 111. The first end of the screw 12 is threadedly connected to the threaded hole 111, and the other end of the screw 12 extends out of the bolt sleeve 11.

[0039] As one of the optional implementations of this embodiment, the pull ear embedded part 2 includes a bolt sleeve 11 and a double-ear pull ring rod 21, the bolt sleeve 11 has a threaded hole 111, one end of the double-ear pull ring rod 21 is threadedly connected to the threaded hole 111, and the other end of the double-ear pull ring rod 21 has a connecting part 211 for connecting to the basket screw 5.

[0040] As one of the optional implementations of this embodiment, the distance between two adjacent steel main beams 3 is not less than 200 mm.

[0041] As one of the optional implementations of this embodiment, the steel main beam 3 and the external angle attachment beam 4 are both steel beams.

[0042] This embodiment is applied in actual construction: the project overview is as follows: the total construction area of ​​the project is 99998m 2 The project consists of seven individual buildings, of which the 2# inpatient building has a cantilevered scaffolding structure at the corner of the building, with a height of approximately 32m, which is a special construction plan for ultra-hazardous and major projects. To avoid affecting outdoor work, the external scaffolding is arranged in a cantilevered manner. Compared with the traditional flat-laying method, the new cantilevered method uses factory-made and standardized components of the pull-up steel external scaffolding. It is easy to install, has safe and reliable construction quality, uses scientific and reasonable technology, and is fast to construct. It is independent of the outdoor environment and does not affect the secondary indoor construction. The structural form is novel and unique, and is hinged to the structure, thus forming a strong structure with weak attachments. Even if the connection is damaged, it will not affect the structure.

[0043] Specifically, the specific construction steps of the cantilevered scaffolding structure at the corner of a building provided in this embodiment are as follows:

[0044] First, before the ring beam of the structural floor 100 is constructed, a bolt sleeve 11 is placed at the corresponding position in the template of the ring beam, and then the ring beam is cast. After the ring beam is cast, the bolt sleeve 11 is embedded in the ring beam. When the strength of the structural floor is greater than 70% of the design strength, the screw 12 is installed and the steel main beam 3 is fixed by the screw 12. The pull ear embedded parts 2 are embedded in the same way. After the pull ear embedded parts 2 are embedded and fixed, the flower basket screw 5 is installed so that one end of the flower basket screw 5 is connected to the steel main beam 3 and the other end is connected to the pull ear embedded parts 2. Next, the external angle attachment beam 4 is welded and fixed to the steel main beam 3, and then a fixed scaffolding 6 is erected on the external angle attachment beam 4 to complete the construction of the cantilever scaffolding structure at the corner of the building.

[0045] During the construction process, the following matters need to be noted:

[0046] First, by measuring and laying out, the position of the bolt sleeve 11 embedded in the embedded part 1 of the steel main beam is accurately located, the bolt sleeve 11 is installed and it is ensured that the bolt sleeve 11 does not shift during the concrete pouring process, there is no hollowing around the bolt sleeve 11, and the bolt sleeve 11 is ensured to be closely connected with the structural floor 100. Secondly, it is also necessary to ensure that the thread of the bolt sleeve 11 is not damaged.

[0047] Pull ear embedded part 2: Its position also needs to be determined through precise measurement and layout, and it must be in line with the embedded part 1 of the steel main beam of the next layer in the vertical direction to ensure that its force line is the shortest.

[0048] External corner attachment beam 4: It is attached to the steel main beam 3 and provides a support component for the inner and outer vertical poles at the external corner position. After the steel main beam 3 is installed, it is connected to the steel main beam 3 by welding to ensure that it does not move.

[0049] The turnbuckle 5 is connected to the steel beam 3 and the pre-embedded lugs 2 of the upper structural layer via latches. This interconnects the independent steel beam 3 and lugs 2 via tie rods to form a complete load-bearing system, providing reliable support for the inner and outer uprights of the scaffold 6 at the exterior corners. The turnbuckle 5 has a central sleeve 53 with 50mm threads at each end, connecting it to the upper and lower tie rods 51 and 52, allowing for a range of adjustment. The threads of the upper and lower tie rods 51 and 52 run in opposite directions to those of the sleeve.

[0050] Positioning foot: A positioning device attached to the steel main beam 3. The positioning foot includes a mounting plate 7, a base plate 8, a positioning post 9, and a fastener 10. The external angle attachment beam 4 is an I-beam. The fastener 10 fastens the mounting plate 7 and the base plate 8 so that the mounting plate 7 and the base plate 8 clamp the flange of the column I-beam. The positioning post 9 is fixedly connected to the mounting plate 7 and inserted into the outer column 61.

[0051] Scaffolding 6: It falls accurately on the steel main beam 3 through the positioning feet on the steel main beam 3.

[0052] During the construction process, the following matters need to be noted:

[0053] 1. Measurement and positioning: Based on the selected scheme and calculation results, pre-embed bolt sleeves and pull ear embedded parts on the main structure. In this process, it is imperative to ensure that the holes are opened accurately. If the deviation is too large, the steel main beam will not be installed, thus causing the scheme to fail.

[0054] 2. How to ensure that the embedded bolt sleeves and pull ear embedded parts do not shift during the construction process, such as concrete pouring and other processes. If the bolt sleeves and pull ear embedded parts shift during this process, the steel main beam will be unable to be installed, or the bolt sleeves and pull ear embedded parts will not meet the bearing capacity requirements, thereby reducing the safety factor of the rectified external scaffolding.

[0055] 3. Monitor the use of external scaffolding throughout the construction process. As the main structure rises and the load of the external scaffolding gets closer to the design value, it is imperative to control the load on the external scaffolding during the process. It is strictly forbidden to pile loads, use external scaffolding as a support frame, or use external scaffolding as a material transfer platform. The above behaviors will lead to uncontrollable risks of the external scaffolding.

[0056] 4. Sinking and deformation detection: During the construction process, as the external scaffolding becomes higher and the load becomes larger, deformation will become an inevitable event. We must conduct regular observations to ensure that the deformation is within a controllable range.

[0057] 5. Control the tightening force of the basket screw. The cantilever scaffolding structure at the corner of the building is a force-bearing system composed of pre-embedded bolts and steel tie rods. During the installation process, the tie rods need to control a certain tightening force. Insufficient tightening force will cause the steel to bear the force alone, and the bearing capacity will not meet the requirements. Excessive tightening force will cause the steel plate to have a zero stress area, that is, the plate will be empty.

[0058] This embodiment not only eliminates interference between the exterior and the main structure, as well as secondary exterior wall construction and decoration, but also provides ample working surface for outdoor operations, creating conditions for streamlined construction. This reduces costs compared to sequential and parallel construction, and further optimizes and enhances the outdoor space. This solution successfully addresses the drawbacks of traditional flat-laying I-beams, which require extensive pre-embedded floor slabs and numerous reserved openings in exterior walls, resulting in secondary operations such as hole sealing, embedded component cutting, and corrosion protection. This ensures project quality while accelerating construction progress and increasing the reuse rate of templates in corresponding locations, making the technical achievements easily transferable.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cantilever scaffolding structure at the corner of a building, characterized in that: include: Embedded steel main beam, connected to the first position of the structural floor; a pull ear embedded part connected to a second position of the structural floor, wherein the second position is higher than the first position; A plurality of section steel main beams, one end of each section steel main beam being fastened to the section steel main beam embedded part, and the other end of each section steel main beam extending outward from the structural floor; A plurality of external angle attachment beams, wherein the external angle attachment beams are connected to the plurality of the section steel main beams; A plurality of turnbuckles, one end of each turnbuckle being connected to the section steel main beam, and the other end of each turnbuckle being connected to the pull ear embedded part; The scaffolding is installed and connected to the external angle attachment beam.

2. The cantilevered scaffolding structure at the corner of a building according to claim 1, characterized in that: The scaffolding includes multiple external poles, multiple large cross bars and fasteners. The external poles are installed and connected to the external angle attachment beams. The fasteners fasten the external poles and the large cross bars to form a cross-staggered frame structure.

3. The cantilevered scaffolding structure at the corner of a building as claimed in claim 2, characterized in that: It also includes a mounting plate, a base plate, a positioning column and fasteners. The external angle attachment beam is an I-beam. The fasteners fasten the mounting plate and the base plate so that the mounting plate and the base plate clamp the flange of the I-beam. The positioning column is fixedly connected to the mounting plate, and the positioning column is inserted into the outer pole.

4. The cantilevered scaffolding structure at a building corner according to claim 1, wherein: The basket screw includes an upper pull rod, a lower pull rod and a sleeve, one end of the upper pull rod is connected to the pull ear embedded part, the other end of the upper pull rod is connected to the sleeve, one end of the lower pull rod is connected to the steel main beam, and the other end of the lower pull rod is connected to the sleeve.

5. The cantilevered scaffolding structure at the corner of a building as claimed in claim 4, characterized in that: The upper pull rod is threadedly connected to the sleeve, and the lower pull rod is threadedly connected to the sleeve.

6. The cantilevered scaffolding structure at a building corner according to claim 5, characterized in that: The upper pull rod has a first threaded section, and the lower pull rod has a second threaded section. The first threaded section is connected to the sleeve, and the second threaded section is connected to the sleeve. The thread direction of the first threaded section is opposite to that of the second threaded section.

7. The cantilevered scaffolding structure at a building corner according to claim 1, wherein: The embedded part of the steel main beam includes a bolt sleeve and a screw rod. The bolt sleeve has a threaded hole. The first end of the screw rod is threadedly connected to the threaded hole, and the other end of the screw rod extends out of the bolt sleeve.

8. The cantilevered scaffolding structure at a building corner according to claim 1, wherein: The pull ear embedded part includes a bolt sleeve and a double-ear pull ring rod, the bolt sleeve has a threaded hole, one end of the double-ear pull ring rod is threadedly connected to the threaded hole, and the other end of the double-ear pull ring rod has a connecting portion for connecting to the basket screw.

9. The cantilevered scaffolding structure at a building corner according to claim 1, wherein: The distance between two adjacent steel main beams is not less than 200 mm.

10. The cantilevered scaffolding structure at a building corner according to claim 1, characterized in that: The steel main beam and the external angle attachment beam are both steel beams.

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