Profile steel support structure for high-altitude cantilever structure construction

Abstract

The utility model provides a profile steel support structure for high-altitude cantilever structure construction, and belongs to the technical field of building construction. According to the technical scheme, the device comprises a triangular steel platform operation frame, a triangular steel platform and an overhanging supporting frame; the triangular steel platform operation frame comprises a jacking rod, a connecting rod is arranged on the jacking rod, and an inclined supporting rod is arranged on the connecting rod; the triangular steel platform comprises a plurality of horizontal section steel, diagonal bracing section steel is arranged at the outer side ends of the horizontal section steel, the free ends of the horizontal section steel and the diagonal bracing section steel are arranged on the wall through connecting pieces, and a plurality of formwork supporting cross beams are arranged on the horizontal section steel. The overhanging supporting frame comprises a supporting frame vertical rod, a longitudinal horizontal rod and a transverse horizontal rod, the inner side end of the transverse horizontal rod is connected with the full framing in the building, and the supporting frame vertical rod is fixed to the formwork supporting frame cross beam. The overhanging scaffold has the advantages that through structural optimization, the problems that a traditional overhanging scaffold is long in construction period, high in leakage risk, waste in materials and the like are systematically solved, and comprehensive benefits are remarkable.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a steel support structure for high-altitude cantilever structure construction. Background Technology

[0002] With the development of the construction industry, people have higher requirements for the artistic beauty of building facades. Residential designs have added many cantilevered structures to create artistic shapes. During construction, these cantilevered structural members require the erection of cantilevered formwork and work scaffolds to meet the construction needs of cantilevered structures.

[0003] In existing technologies, traditional cantilever scaffolding only considers the cantilever frame as an operating frame, not as a support frame for cantilever structure construction. Traditional cantilever steel beams require unloading wire ropes, but some roof truss cantilever structures cannot accommodate unloading wire ropes. Structural areas where unloading wire ropes can be installed require the concrete to reach its design strength, resulting in excessively long construction periods and increased costs. Traditional cantilever steel beams require a 1:1.25 ratio between the cantilever and anchorage ends, and excessively long I-beams at cantilever locations can easily deform and hinder operation. Therefore, this solution provides a steel support structure for high-altitude cantilever structure construction. Utility Model Content

[0004] The purpose of this utility model is to provide a simple steel support structure for high-altitude cantilever construction that improves construction efficiency.

[0005] This utility model is achieved through the following measures:

[0006] A steel support structure for high-altitude cantilever construction, characterized in that it includes a triangular steel platform operating frame, a triangular steel platform, and a cantilever support frame;

[0007] The triangular steel platform operating frame includes several tensioning rods, each tensioning rod is provided with a connecting rod extending to the outside, and the connecting rod is provided with a diagonal brace, the lower end of which is provided on the main structure;

[0008] The triangular steel platform includes several horizontal steel sections. The outer ends of the horizontal steel sections are provided with diagonal bracing steel sections. Specifically, the upper ends of the diagonal bracing steel sections are welded to the lower side of the horizontal steel sections. One diagonal bracing steel section and one horizontal steel section form a single triangular steel structure. The free ends of the horizontal steel sections and the diagonal bracing steel sections are both set on the wall through connectors. Several formwork support beams are provided on the several horizontal steel sections.

[0009] The cantilever support frame includes several support frame uprights, several longitudinal horizontal bars, and several transverse horizontal bars. The inner end of the transverse horizontal bars is connected to the full-span scaffold inside the building. The support frame uprights are fixed on the crossbeams of the formwork support frame, and the support frame uprights are connected to the longitudinal horizontal bars and the transverse horizontal bars.

[0010] The specific features of this utility model also include:

[0011] The angle steel platform operating frame also includes operating frame crossbars and scaffold boards. The operating frame crossbars and scaffold boards are laid on the connecting rods, and the operating frame crossbars and scaffold boards form a rigid enclosure.

[0012] The upper end of the clamping rod is provided with a matching lead screw through a threaded structure, and a top support is provided around the lead screw. The lead screw can be rotated by rotating the top support.

[0013] Between two adjacent layers of the angle steel platform operating frames, several protective uprights are provided. Specifically, the protective uprights are mounted on the connecting rods, and several protective crossbars are provided on the protective uprights. A safety mesh net is provided on the longitudinal and transverse structure formed by the protective uprights and the protective crossbars. The safety mesh net is installed by several steel sections. Kickboards are provided on several of the protective uprights.

[0014] The connector includes several pre-embedded screws embedded in the wall and a pair of steel plates respectively set on the inner and outer sides of the wall. The steel plates are set on the pre-embedded screws on the corresponding sides by a threaded structure and fixed by nuts and washers. The free ends of the horizontal steel and the diagonal bracing steel are respectively welded to the steel plates on the outer side of the wall.

[0015] The cantilever support frame also includes horizontal scissor braces, vertical scissor braces, inclined plates and diagonal braces, safety mesh netting, square bars, templates, kickboards, and several protective horizontal bars. The horizontal and vertical scissor braces are installed on the support frame uprights. The safety mesh netting, kickboards, and protective horizontal bars are fixed to the outer support frame uprights. The inclined plates and diagonal braces are fixed to the support frame uprights. The square bars and templates are fixed to the inclined plates and diagonal braces and the upper row of horizontal bars.

[0016] The construction method is as follows:

[0017] S1. Conduct surveying and layout at the construction site, including marking out the outline of the single triangular structure on the ground, marking out the positions of the pre-embedded bolts of the connecting parts on the wall, marking out the position of the formwork support beam on the triangular steel platform, and marking out the positions of the support frame uprights on the formwork support beam.

[0018] S2. Place the horizontal steel and the diagonal bracing steel according to the marked positions on the ground, and weld the horizontal steel and the diagonal bracing steel firmly to form a single triangular steel structure;

[0019] S3. An operating frame for a triangular steel platform is erected below the fixed positions of the horizontal steel section and the diagonal bracing steel section. First, the tensioning rod is tightened inside the building using wooden blocks and top supports. Specifically, the lower end of the tensioning rod abuts against the main structure. Then, wooden blocks are placed on the upper end of the screw rod, and the top supports are rotated to tighten the wooden blocks against the upper part of the main structure. Several indoor tensioning rods are also set on the tensioning rods. The longitudinal and transverse horizontal bars of the operating frame are used to constrain deformation. The frame is extended to the outside with connecting rods and connected and fixed to the diagonal bracing rods for force transmission. The connecting rods of the upper and lower layers are connected by the operating frame protective uprights. The connecting rods are connected by the operating frame horizontal bars. The top is fully covered with scaffold boards. Protective horizontal bars are set on the operating frame protective uprights and safety netting is fully hung. Kickboards are set at the junction of the operating frame protective uprights and scaffold boards.

[0020] S4. The triangular steel platform operating frame has passed inspection.

[0021] S5. Hoist individual triangular steel structures and fix them to the wall using connectors. After all the individual triangular steel structures are hoisted and fixed to the wall, weld several individual triangular steel structures into a whole to form a triangular steel platform using the formwork support beams. The spacing between individual triangular steel structures and the spacing between the formwork support beams are determined by the support frame uprights. The spacing between individual triangular steel structures generally does not exceed 1.2m.

[0022] S6. The triangular steel platform passed inspection and acceptance.

[0023] S7. Positioning steel bars for the support frame uprights are welded on the triangular steel platform. The support frame uprights are erected and connected to the longitudinal and transverse horizontal bars. They are also connected to the full-span scaffolding inside the building through the transverse horizontal bars. Vertical and horizontal scissor braces are set between the support frame uprights. Inclined plates and inclined rods are set at the positions of the structural inclined plates and fixed to the support frame uprights. The square bars and templates are fixed on the inclined plates and the top row of transverse horizontal bars. The bottom row of transverse horizontal bars is fully covered with scaffold boards. Protective horizontal bars are set on the outer row of support frame uprights and safety netting is fully hung on them. Kickboards are set at the junction of the outer row of support frame uprights and scaffold boards.

[0024] S8. Inspection and acceptance passed.

[0025] The beneficial effects of this utility model are as follows:

[0026] 1. This utility model uses a triangular steel platform as the main load-bearing structure, breaking through the traditional construction method of using steel sections as the main supporting beam. It eliminates the need to drill holes in the wall, avoiding quality risks such as later repairs and leakage.

[0027] 2. This utility model can be used not only as an operating frame but also as a support frame for a cantilever structure.

[0028] 3. This utility model eliminates the need for unloading steel wire ropes, shortening the construction period and reducing costs.

[0029] 4. This utility model does not require the cantilever end and anchored end to meet the ratio of 1:1.25, which saves steel and increases the reliability of the platform. Attached Figure Description

[0030] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0031] Figure 2 This is a schematic diagram of the planar structure of an embodiment of the present utility model.

[0032] Figure 3 This is a schematic diagram of the triangular steel platform operating frame in an embodiment of this utility model.

[0033] Figure 4 This is a schematic diagram of the connector in an embodiment of the present utility model.

[0034] The attached diagrams are labeled as follows: 1. Connector; 3. Hard enclosure; 5. Safety mesh netting; 6. Vertical scissor brace; 7. Horizontal scissor brace; 8. Main structure; 9. Timber; 10. Top support; 11. Diagonal brace; 12. Protective upright of operating frame; 13. Connecting rod; 14. Tightening rod; 15. Diagonal bracing steel; 16. Formwork support beam; 17. Horizontal steel; 18. Longitudinal horizontal bar; 19. Support frame upright; 20. Protective horizontal bar; 21. Full-span scaffolding inside the building; 22. Horizontal horizontal bar; 23. Indoor tightening rod of operating frame; 24. Embedded bolt; 25. Steel plate; 27. Nut; 28. Washer; 29. ​​Positioning rebar. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0039] See Figures 1-4 A steel support structure for high-altitude cantilever construction includes a triangular steel platform operating frame, a triangular steel platform, and a cantilever support frame;

[0040] The triangular steel platform operating frame includes several tension rods 14, and a connecting rod 13 extending to the outside is provided on the tension rod 14. An inclined brace 11 is provided on the connecting rod 13, and the lower end of the inclined brace 11 is provided on the main structure 8.

[0041] The triangular steel platform includes several horizontal steel sections 17. The outer ends of the horizontal steel sections 17 are provided with diagonal bracing steel sections 15. Specifically, the upper end of the diagonal bracing steel section 15 is welded to the lower side of the horizontal steel section 17. One diagonal bracing steel section 15 and one horizontal steel section 17 form a single triangular steel structure. The free ends of the horizontal steel section 17 and the diagonal bracing steel section 15 are both set on the wall through connectors 1. Several formwork support beams 16 are provided on the several horizontal steel sections 17.

[0042] The cantilever support frame includes several support frame uprights 19, several longitudinal horizontal bars 18 and several transverse horizontal bars 22. The inner end of the transverse horizontal bar 22 is connected to the full-span scaffold 21 inside the building. The support frame uprights 19 are fixed on the formwork support beam 16 and are connected to the longitudinal horizontal bars 18 and the transverse horizontal bars 22.

[0043] The angle steel platform operating frame also includes operating frame crossbars and scaffold boards. The operating frame crossbars and scaffold boards are laid on the connecting rod 13, and the operating frame crossbars and scaffold boards form a rigid enclosure 3.

[0044] The upper end of the clamping rod 14 is provided with a matching screw through a threaded structure, and a top support 10 is provided around the screw. The screw can be rotated by rotating the top support 10.

[0045] Between the two adjacent layers of angle steel platform operating frames, there are several operating frame protective uprights 12. Specifically, the operating frame protective uprights 12 are set on the connecting rods 13, and several protective crossbars 20 are set on the operating frame protective uprights 12. A safety mesh net 5 is set on the longitudinal and transverse structure formed by the operating frame protective uprights 12 and the protective crossbars 20. The safety mesh net 5 is installed by several steel sections 4. Kickboards are set on the several operating frame protective uprights 12.

[0046] The connector 1 includes several pre-embedded screws 24 embedded in the wall and a pair of steel plates 25 respectively set on the inner and outer sides of the wall. The steel plates 25 are set on the corresponding pre-embedded screws 24 by a threaded structure and fixed by nuts 27 and washers 28. The free ends of the horizontal steel 17 and the diagonal bracing steel 15 are respectively welded to the steel plates 25 on the outer side of the wall.

[0047] The cantilever support frame also includes horizontal scissor bracing 7, vertical scissor bracing 6, inclined plates and diagonal braces, safety mesh netting 5, square bars, templates, kickboards, and several protective horizontal bars 20. The horizontal scissor bracing 7 and vertical scissor bracing 6 are installed on the support frame uprights 19. The safety mesh netting 5, kickboards, and protective horizontal bars 20 are fixed to the outer support frame uprights 19. The inclined plates and diagonal braces are fixed to the support frame uprights 19. The square bars and templates are fixed to the inclined plates and diagonal braces and the upper row of horizontal bars 22.

[0048] The construction method is as follows:

[0049] S1. Conduct surveying and layout positioning at the construction site, including laying out the outline of the single triangular structure on the ground, laying out the position of the pre-embedded bolts 24 of the connector 1 on the wall, laying out the position of the formwork support beam 16 on the triangular steel platform, and laying out the position of the support frame uprights 19 on the formwork support beam 16.

[0050] S2. Place the horizontal steel 17 and the diagonal bracing steel 15 according to the marked positions on the ground, and weld the horizontal steel 17 and the diagonal bracing steel 15 firmly to form a single triangular steel structure.

[0051] S3. An operating frame for a triangular steel platform is erected below the fixed positions of the horizontal steel 17 and the diagonal bracing steel 15. First, the tensioning rod 14 is tightened inside the building using wooden blocks 9 and top supports 10. Specifically, the lower end of the tensioning rod 14 rests against the main structure 8. Then, wooden blocks 9 are set at the upper end of the screw rod, and the top supports 10 are rotated to tighten the wooden blocks 9 against the upper part of the main structure 8. Several indoor tensioning rods 23 are also set on the tensioning rod 14. The longitudinal and transverse horizontal bars of the operating frame are used to constrain deformation. The frame is extended to the outside using connecting rods 13 and connected and fixed to the diagonal bracing rods 11 to transmit force. The connecting rods 13 of the upper and lower layers are connected by the operating frame protective uprights 12. The connecting rods 13 are connected by the operating frame horizontal bars and fully covered with scaffold boards. Protective horizontal bars 20 are set on the operating frame protective uprights 12 and safety netting 5 is fully hung on them. Kickboards are set at the junction of the scaffold boards of the operating frame protective uprights 12.

[0052] S4. The triangular steel platform operating frame has passed inspection.

[0053] S5. Hoist the individual triangular steel structures and fix them to the wall using connector 1. After all the individual triangular steel structures are hoisted and fixed to the wall, weld several individual triangular steel structures into a whole using the formwork support beam 16 to form a triangular steel platform. The spacing between the individual triangular steel structures and the spacing between the formwork support beam 16 are determined by the support frame uprights 19. The spacing between the individual triangular steel structures generally does not exceed 1.2m.

[0054] S6. The triangular steel platform passed inspection and acceptance.

[0055] S7. Positioning steel bars 29 of support frame uprights 19 are welded on the triangular steel platform. Support frame uprights 19 are erected. Support frame uprights 19 are connected to longitudinal horizontal bars 18 and transverse horizontal bars 22, and are connected to the full-span scaffold 21 inside the building through transverse horizontal bars 22. Vertical scissor bracing 6 and horizontal scissor bracing 7 are set between support frame uprights 19. Inclined plates and inclined rods are set at the position of the structural inclined plates and fixed to support frame uprights 19. Square bars and templates are fixed on the inclined plates and inclined rods and the top row of transverse horizontal bars 22. Scaffold boards are fully laid on the bottom row of transverse horizontal bars 22. Protective horizontal bars 20 are set on the outer row of support frame uprights 19 and safety netting 5 is fully hung. Kickboards are set at the junction of the outer row of support frame uprights 19 and scaffold boards.

[0056] S8. Inspection and acceptance passed.

[0057] The technical features of this utility model not described can be implemented by or by using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this utility model, and this utility model is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A profile steel support structure for construction of a high-rise overhanging structure, characterized by, Includes a triangular steel platform operating frame, a triangular steel platform, and a cantilever support frame; The triangular steel platform operating frame includes several tensioning rods (14), and the tensioning rods (14) are provided with connecting rods (13) extending to the outside. The connecting rods (13) are provided with diagonal bracing rods (11), and the lower end of the diagonal bracing rods (11) is provided on the main structure (8). The triangular steel platform includes several horizontal steel sections (17), and the outer ends of the horizontal steel sections (17) are provided with diagonal bracing steel sections (15). The free ends of the horizontal steel sections (17) and the diagonal bracing steel sections (15) are both set on the wall through connectors (1). Several formwork support beams (16) are provided on the several horizontal steel sections (17). The cantilever support frame includes several support frame uprights (19), several longitudinal horizontal bars (18), and several transverse horizontal bars (22). The inner end of the transverse horizontal bar (22) is connected to the full-span scaffold (21) inside the building. The support frame uprights (19) are fixed on the formwork support beam (16), and the support frame uprights (19) are connected to the longitudinal horizontal bars (18) and the transverse horizontal bars (22).

2. The profile steel support structure for high altitude overhanging structure construction according to claim 1, characterized in that, The angle steel platform operating frame also includes operating frame crossbars and scaffold boards. The operating frame crossbars and scaffold boards are laid on the connecting rod (13), and the operating frame crossbars and scaffold boards form a hard enclosure (3). The upper end of the clamping rod (14) is provided with a matching screw through a threaded structure, and a top support (10) is provided around the screw.

3. The steel support structure for high-altitude cantilever construction according to claim 2, characterized in that, Between the two adjacent layers of the angle steel platform operating frame, there are several operating frame protective uprights (12), and several protective crossbars (20) are provided on the operating frame protective uprights (12). A safety mesh net (5) is provided on the longitudinal and transverse structure formed by the operating frame protective uprights (12) and the protective crossbars (20); kick plates are provided on the several operating frame protective uprights (12).

4. The steel support structure for high-altitude cantilever construction according to claim 1, characterized in that, The connector (1) includes several pre-embedded screws (24) embedded in the wall and a pair of steel plates (25) respectively set on the inner and outer sides of the wall. The steel plates (25) are set on the pre-embedded screws (24) on the corresponding sides by a threaded structure.

5. The steel support structure for high-altitude cantilever construction according to claim 1, characterized in that, The cantilever support frame also includes horizontal scissor bracing (7), vertical scissor bracing (6), inclined plates and diagonal bars, safety mesh netting (5), square bars, templates, kickboards and protective crossbars (20). The horizontal scissor bracing (7) and vertical scissor bracing (6) are installed on the support frame uprights (19), and the safety mesh netting (5), kickboards and protective crossbars (20) are fixed on the outer support frame uprights (19).

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