CN112324120B - A cantilever scaffolding - Google Patents
A cantilever scaffolding Download PDFInfo
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- CN112324120B CN112324120B CN202011279153.6A CN202011279153A CN112324120B CN 112324120 B CN112324120 B CN 112324120B CN 202011279153 A CN202011279153 A CN 202011279153A CN 112324120 B CN112324120 B CN 112324120B
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- cantilever beam
- cantilever
- pair
- steel
- vertical
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
本发明公开一种悬挑脚手架，包括多个悬臂梁，每个悬臂梁一端部通过至少一个预埋箍板装置固定在底层楼板上，预埋箍板装置包括一对立板、平板以及螺栓组件，一对立板对置且与平板垂直焊接固定，每个立板上沿上下开设有多个螺栓孔，螺栓组件包括双头螺栓和螺母，双头螺栓穿过一对立板上的螺栓孔与螺母螺纹连接；多个支撑杆，每个支撑杆一端部与预埋在墙体上的埋件焊接固定、另一端部与相应悬臂梁焊接固定，相邻两个悬臂梁之间通过角钢焊接有连接型钢；脚手架组件，包括多个立杆、多个横杆以及多个扣件，悬臂梁上每隔设定间距焊接有一对定位筋，每个立杆下端部与相应对定位筋相固定，相邻两个立杆之间、立杆与横杆之间通过扣件紧固。
The present invention discloses a cantilever scaffolding, comprising a plurality of cantilever beams, one end of each cantilever beam being fixed to the bottom floor slab by at least one embedded hoop plate device, the embedded hoop plate device comprising a pair of vertical plates, a flat plate and a bolt assembly, the pair of vertical plates being opposite to each other and being vertically welded and fixed to the flat plate, a plurality of bolt holes being opened at the upper and lower edges of each vertical plate, the bolt assembly comprising stud bolts and nuts, the stud bolts passing through the bolt holes on the pair of vertical plates and being threadedly connected with the nuts; a plurality of support rods, one end of each support rod being welded and fixed to an embedded part embedded in a wall, and the other end being welded and fixed to a corresponding cantilever beam, connecting steel being welded between two adjacent cantilever beams by angle steel; a scaffolding assembly comprising a plurality of vertical poles, a plurality of horizontal poles and a plurality of fasteners, a pair of positioning ribs being welded on the cantilever beam at set intervals, the lower end of each vertical pole being fixed to the corresponding pair of positioning ribs, and fastening between two adjacent vertical poles and between a vertical pole and a horizontal pole by fasteners.
Description
Technical Field
The invention relates to the technical field of building tools, in particular to an overhanging scaffold.
Background
The overhanging scaffold is an outer scaffold for construction, wherein the load in the vertical direction is transmitted to a main structure of a building through a bottom section steel supporting frame, and the outer scaffold belongs to simple facilities used in the building, and generally comprises two types, namely one type of overhanging for each layer and the other type of overhanging for multiple layers. The overhanging scaffold is suitable for high-rise buildings or high-rise structures with the height not more than 100m, and the height of the scaffold at the upper part of each section steel supporting frame is not more than 24m (wherein JGJ130-2019 prescribes that the height is not more than 20 m). Which generally includes such components as section steel support frames, fastener type steel pipe scaffold, wall connectors, etc.
The cantilever beam of the existing cantilever scaffold is usually welded with an embedded part on a main structural surface (namely a cast-in-place surface or a floor surface) of a building or is fixed by adopting a clamping ring. The structure of embedded part welded fixation is adopted, the welding position between the cantilever beam and the floor slab is usually a plurality of welding points, each welding point is provided with a plurality of welding lines, the stress of the welding position is large and uneven, the construction is complicated, and the time and the labor are consumed. The structure with the fixed snap ring is commonly used, and is usually to integrally pour the snap ring in the steel bar embedded in the floor surface, pass the cantilever beam through the snap ring, fix one end of the cantilever beam on the floor surface by using the snap ring, and extend out of the other end of the outer side of the building main body to be used as a supporting point of the scaffold. However, a space is usually left between the clamping ring and the cantilever beam, and other components need to be plugged in for clamping, so that the cantilever Liang Zhendong is prevented from loosening. For example, a wooden wedge is usually used for clamping, and as the wooden wedge is easy to be extruded and deformed, a cantilever beam mainly stressed still has loosening conditions, so that a great potential safety hazard exists. In addition, the length of the cantilever beam extending out of the building main body is obviously longer than the length of the cantilever beam fixed with the floor slab surface, so that the extending cantilever beam is easy to deform after being subjected to a load in a larger vertical direction, and the stability and the safety reliability of the support of the cantilever beam are affected. Finally, the uprights supported on the cantilever beams are usually welded and fixed on the cantilever beams, and in the multi-layer overhanging type scaffold structure, the assembling and disassembling work of the uprights is not facilitated.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the cantilever scaffold which is simpler in structure, more stable in support and easy to disassemble and assemble.
The invention provides a cantilever scaffold which is erected on the outer side of a building main body, wherein the building main body comprises a plurality of floors, structural beams formed at the bottom of each floor, and a wall body formed between two adjacent floors, and the cantilever scaffold comprises:
The cantilever beams extend horizontally, one end of each cantilever beam is fixed on a bottom floor slab through at least one embedded hooping plate device, the other end of each cantilever beam extends to the outer side of the building main body, each embedded hooping plate device comprises a pair of opposite vertical plates, a flat plate vertically welded and fixed with the corresponding vertical plates and embedded in the bottom floor slab, and a bolt assembly, a plurality of bolt holes are formed in the upper edge and the lower edge of each vertical plate, each bolt assembly comprises a stud bolt and a nut, and the stud bolts penetrate through the bolt holes in the corresponding vertical plates and are in threaded connection with the nuts so as to enable the cantilever Liang Kajin to be arranged between the corresponding vertical plates;
the cantilever beams, part of the wall body and the support rods form a triangular support structure, and connecting section steel is welded between two adjacent cantilever beams through angle steel;
The scaffold assembly comprises a plurality of vertical rods, a plurality of cross rods and a plurality of fasteners, wherein a pair of positioning ribs are welded on the cantilever beam at intervals, the lower end parts of every two vertical rods are fixed with the corresponding pairs of positioning ribs, and every two adjacent vertical rods and the cross rods are fastened through the fasteners.
In the above technical scheme, preferably, the cantilever beam (1) and the connection section steel are hot rolled i-steel, the height of the connection section steel is 5cm lower than that of the cantilever beam, the width of the flange of the connection section steel is 5-10 cm smaller than that of the flange of the cantilever beam, the thickness of the web of the connection section steel is smaller than or equal to that of the web of the cantilever beam, and the thickness of the flange of the connection section steel is smaller than or equal to that of the flange of the cantilever beam.
In the above technical solution, preferably, the distance between the pair of upright plates is 5-10 mm greater than the width of the flange of the cantilever beam.
In the above technical scheme, preferably, the embedded part is an ME type or MF type embedded part, and the thickness of the steel plate is 12-18 mm.
In the above technical scheme, preferably, the positioning ribs are screw steel, the diameter of the positioning ribs is 5-8 mm smaller than that of the vertical rods, and the length of the positioning ribs is 20-30 cm.
In the above technical solution, preferably, the cantilever beam is Q235B steel or Q345B steel.
Compared with the prior art, the invention has the following advantages:
1. the cantilever beam is fastened through the pre-embedded hooping plate device, and the cantilever Liang Kajin is arranged between the pair of vertical plates through the bolt holes formed in the vertical plates and the bolt assemblies, so that the cantilever beam is easy to disassemble and assemble; the triangular support structure is formed by the support rods, the cantilever beams and part of the wall body, so that the cantilever beams are reliably connected with the building main body, and the support is more stable, safer and more reliable;
2. The connecting section steel is welded between the cantilever beams, so that the supportability of the cantilever beams can be enhanced, and the uneven stress of the cantilever beams in the horizontal direction is avoided, and the instability out of the plane is avoided;
3. The vertical rods are fixed by welding a pair of positioning ribs on the cantilever beam at intervals, so that the vertical rods are prevented from moving, and the cantilever beam is compact in structure, reasonable in layout and easy to construct.
Drawings
FIG. 1 is a schematic view of the structure of the present invention installed outside a building body;
FIG. 2 is a schematic structural view of the pre-buried strap arrangement of the present invention;
FIG. 3 is a schematic view of the structure of the bolt assembly of the present invention;
FIG. 4 is a schematic view of the fixing structure of the cantilever beam and pre-buried strap arrangement of the present invention;
FIG. 5 is a schematic side view of the securing structure shown in FIG. 4;
FIG. 6 is a schematic view of the triangular support structure of the cantilever beam, support bar, wall and connecting section steel of the present invention;
FIG. 7 is a schematic view of the connection structure of the cantilever beam and the connecting section steel shown in FIG. 6;
Wherein the reference numerals are as follows:
100-overhanging scaffolds; 200-building main body; 201-floor slab; 202-structural beams; 203-wall body;
1-cantilever beam;
2-embedding a hooping plate device; 21-a vertical plate; 211-bolt holes; 22-plate; a 23-bolt assembly; 231-stud bolts; 232-nut;
3-supporting rods;
4-burying parts;
5-angle steel;
6-connecting the section steel;
7-scaffold assembly; 71-standing a pole; 72-cross bar; 73-a fastener;
8-positioning ribs.
Detailed Description
It is to be understood that, according to the technical solution of the present invention, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
The terms of directions such as up, down, horizontal, bottom, outside, inside, and opposite directions mentioned in the present specification are defined with respect to the structures shown in the drawings, and they are relative concepts, so that they may be changed according to the positions and the use states of the terms. These and other directional terms should not be construed as limiting terms.
The cantilever scaffold 100 comprises a cantilever beam 1, a pre-buried hoop plate device 2, a supporting rod 3, a buried piece 4, angle steel 5, connecting section steel 6, a scaffold assembly 7 and a positioning rib 8. The structural components and advantages of the present invention will be described in detail below with reference to fig. 1 to 7.
As shown in fig. 1, a novel cantilever scaffold 100 is mainly used as an outer scaffold for building construction, which is erected on the outer side of a building main body 200. The building main body 200 includes a plurality of floors 201, a structural beam 202 formed at the bottom of each floor 201, and a wall 203 formed between two adjacent floors 201.
The cantilever beams 1 are generally provided in a plurality as a basic supporting structure, each cantilever beam 1 extends horizontally and one end portion thereof is fixed on the bottom floor 201 by two pre-buried hooping plate devices 2, and the other end portion extends to the outside of the building main body 200. In this example, the cantilever beam 1 is a hot-rolled i-steel, and the i-steel is a Q235B steel or a Q345B steel.
As shown in fig. 2 to 5, the pre-buried strap arrangement 2 comprises a pair of opposed risers 21, a panel 22 welded to the pair of opposed risers perpendicularly and pre-buried in the underlying floor 201, and a bolt assembly 23. A plurality of bolt holes 211 are formed in the upper and lower edges of each of the vertical plates 21, and the bolt assembly 23 includes a stud 231 and a nut 232, the stud 231 passing through the bolt hole 211 in one of the pair of plates 21 to be screwed with the nut 232 so as to clamp the cantilever beam 1 between the one of the pair of plates 21.
In this example, the vertical plates 21 and the flat plates 22 are made of steel plates, and the space between the pair of vertical plates 21 is 5-10 mm larger than the width of the flange of the cantilever beam 1.
As shown in fig. 1, 6 to 7, the number of the support rods 3 is corresponding to that of the cantilever beams 1, one end of each support rod 3 is welded and fixed with the embedded part 4 embedded on the wall 203, and the other end is welded and fixed with the corresponding cantilever beam 1. The cantilever beams 1, part of the wall 203 and the support rods 3 form a triangular support structure, and connecting section steel 6 is welded between two adjacent cantilever beams 1 through angle steel 5. The connecting section steel 6 is welded between the cantilever beams 1, so that the supportability of the cantilever beams 1 can be enhanced, and uneven stress of the cantilever beams 1 in the horizontal direction is avoided, and out-of-plane instability is avoided.
In this example, the embedded part 4 is an ME-type or MF-type embedded part, and the thickness of the steel plate is 12-18 mm. The connecting section steel 6 is also hot-rolled I-steel, the height H of the connecting section steel 6 is 5cm lower than the height H of the cantilever beam 1, the width of the flange of the connecting section steel 6 is 5-10 cm smaller than the width of the flange of the cantilever beam 1, the thickness of the web of the connecting section steel 6 is smaller than or equal to the thickness of the web of the cantilever beam 1, and the thickness of the flange of the connecting section steel 6 is smaller than or equal to the thickness of the flange of the cantilever beam 1.
Referring again to fig. 1, the scaffolding assembly 7 comprises a plurality of uprights 71, a plurality of crossbars 72 and a plurality of fasteners 73. A pair of positioning ribs 8 are welded on the cantilever beam 1 at intervals, the lower end part of each upright 71 is fixed with the corresponding pair of positioning ribs 8, and the adjacent two uprights 71 and the upright 71 and the cross bar 72 are fastened through fasteners 73. In this example, the upright 71 and the cross bar 72 are steel pipes, and the fastener 73 is a clip. The positioning ribs 8 are screw steel, the diameter of the positioning ribs is 5-8 mm smaller than that of the vertical rods 71, and the length of the positioning ribs is 20-30 cm.
In summary, the cantilever beam 1 is fastened through the pre-embedded hooping plate device 2, the cantilever beam 1 is clamped between the pair of the opposite plates 21 through the bolt holes 211 formed in the vertical plates 21 and the bolt assemblies 23, so that the cantilever beam is easy to assemble and disassemble; the triangular supporting structure is formed by the supporting rods 3, the cantilever beams 1 and part of the wall 203, so that the cantilever beams 1 are reliably connected with the building main body 200, and the supporting is more stable, safer and more reliable.
The technical scope of the present application is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present application, and these changes and modifications should be included in the scope of the present application.
Claims (2)
1. The utility model provides a scaffold frame encorbelments, erects in the outside of building main part (200), building main part (200) include multilayer floor (201), form structural beam (202) in every floor (201) bottom, form wall body (203) between adjacent two-layer floor (201), its characterized in that, scaffold frame encorbelments includes:
The cantilever beams (1) are horizontally extended, one end part of each cantilever beam (1) is fixed on a bottom floor slab (201) through at least one embedded hooping plate device (2), the other end part of each cantilever beam extends to the outer side of a building main body (200), each embedded hooping plate device (2) comprises a pair of opposite vertical plates (21), a flat plate (22) which is vertically welded and fixed with the pair of vertical plates (21) and is embedded in the bottom floor slab (201) and a bolt assembly (23), a plurality of bolt holes (211) are formed in each vertical plate (21) along the upper and lower directions, each bolt assembly (23) comprises a double-head bolt (231) and a nut (232), and the double-head bolt (231) penetrates through the bolt holes (211) in the pair of vertical plates (21) to be in threaded connection with the nut (232) so as to clamp the cantilever beams (1) between the pair of vertical plates (21);
The cantilever beam (1), part of the wall body (203) and the support rods (3) form a triangular support structure, and connecting section steel (6) is welded between two adjacent cantilever beams (1) through angle steel (5);
the scaffold assembly (7) comprises a plurality of vertical rods (71), a plurality of transverse rods (72) and a plurality of fasteners (73), wherein a pair of positioning ribs (8) are welded on the cantilever beam (1) at intervals, the lower end parts of the vertical rods (71) are fixed with the corresponding pairs of positioning ribs (8) at intervals, and every two adjacent vertical rods (71) and the transverse rods (72) are fastened through the fasteners (73);
The cantilever beam (1) and the connecting section steel (6) are hot rolled I-steel, the height of the connecting section steel (6) is 5cm lower than that of the cantilever beam (1), the flange width of the connecting section steel (6) is 5-10 cm smaller than that of the cantilever beam (1), the web thickness of the connecting section steel (6) is smaller than or equal to that of the cantilever beam (1), and the flange thickness of the connecting section steel (6) is smaller than or equal to that of the cantilever beam (1);
The distance between the pair of vertical plates (21) is 5-10 mm larger than the width of the flange of the cantilever beam (1);
the embedded part (4) is an ME type or MF type embedded part (4), and the thickness of a steel plate is 12-18 mm;
the positioning ribs (8) are made of screw steel, the diameter of the positioning ribs is 5-8 mm smaller than that of the vertical rods (71), and the length of the positioning ribs is 20-30 cm.
2. The cantilever scaffold according to claim 1, wherein: the cantilever beam (1) is Q235B steel or Q345B steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279153.6A CN112324120B (en) | 2020-11-16 | 2020-11-16 | A cantilever scaffolding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279153.6A CN112324120B (en) | 2020-11-16 | 2020-11-16 | A cantilever scaffolding |
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| Publication Number | Publication Date |
|---|---|
| CN112324120A CN112324120A (en) | 2021-02-05 |
| CN112324120B true CN112324120B (en) | 2024-08-09 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214658652U (en) * | 2020-11-16 | 2021-11-09 | 江苏方洋能源科技有限公司 | Overhanging scaffold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010285811A (en) * | 2009-06-12 | 2010-12-24 | As Giken Kk | Cantilever floor plate formwork and cantilever floor plate structure comprising cantilever floor plate formwork |
| CN104179341B (en) * | 2014-08-25 | 2016-03-23 | 中国十七冶集团有限公司 | An installation method of a combined positioning device for a cantilever bearing frame |
| CN204492134U (en) * | 2014-12-31 | 2015-07-22 | 河北建设集团有限公司 | Be convenient to the height scaffolding installed |
| CN207348426U (en) * | 2017-09-27 | 2018-05-11 | 中国能源建设集团江苏省电力建设第三工程有限公司 | A kind of overhanging scaffold easy to girder steel welding |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214658652U (en) * | 2020-11-16 | 2021-11-09 | 江苏方洋能源科技有限公司 | Overhanging scaffold |
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Denomination of invention: A suspended scaffold Granted publication date: 20240809 Pledgee: Lianyungang branch of Bank of Jiangsu Co.,Ltd. Pledgor: JIANGSU FANGYANG ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2025980067017 |