Formwork supporting system for overhanging structure of top and roof of heavy eave rest mountaintop

Abstract

The utility model discloses a heavy eave hilly top roof overhanging structure formwork supporting system which comprises a plurality of main supporting steel beams located at a roof overhanging position, a formwork supporting frame and a roof overhanging structure formwork, the main supporting steel beams are distributed in parallel along the horizontal plane, one end of each main supporting steel beam is fixedly connected with a top floor, and the other end of each main supporting steel beam is fixedly connected with the formwork supporting frame. The other ends of the main supporting steel beams extend to the outer portion of the top floor and are distributed in an overhanging mode. A plurality of auxiliary supporting steel beams perpendicular to the main supporting steel beams are arranged at the positions, above the cantilever ends, of the main supporting steel beams, the formwork supporting frame is arranged above the auxiliary supporting steel beams, the roof cantilever structure formwork is fixed to the top of the formwork supporting frame, and a scaffold of a double-row outer frame structure is erected on the outer side of the formwork supporting frame. The lower portion of the scaffold is connected with the main supporting steel beam. The formwork supporting device is simple in structure, low in erecting difficulty and high in safety, and the formwork supporting problem of cantilever structures of multi-layer, high-layer and small high-layer roofs is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary support systems for building construction, in particular to a cantilever structure formwork support system for a double-eaved hip roof. Background Art

[0002] At present, in order to solve the problem of the formwork support of the cantilever structure of the roof layer, a floor-standing full-height steel pipe fastener-type rack is often used. However, since the support height reaches tens of meters, it is troublesome to support and dismantle, and the foundation requirements are high. There are many safety hazards in high-altitude operations, and it affects the construction work of the personnel below. At the same time, the steel pipes, fasteners and other materials used are many, which makes the support and dismantling of the racks consume a lot of manpower, which is not economical and takes a long time. There is also a cantilever steel pipe rack for support in the prior art, but this type of structure also has the problem of poor safety, which in turn affects the safety of construction workers.

[0003] Therefore, for high-rise and low-rise buildings with many roof overhangs, it is necessary to design a safe and reliable roof cantilever structure formwork support system. Utility Model Content

[0004] The utility model aims to provide a cantilever structure formwork support system for a double-eaved hip roof, which has low erection difficulty and high safety, and well solves the problems mentioned in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cantilever structure formwork support system for a double-eaved hip roof, comprising a main supporting steel beam located at the roof cantilever, a formwork support frame and a roof cantilever structure formwork, wherein a plurality of main supporting steel beams are arranged in parallel along a horizontal plane, one end of the main supporting steel beam is fixedly connected to the top floor, and the other end of the main supporting steel beam is extended to the external cantilever distribution of the top floor; a plurality of secondary supporting steel beams are arranged above the cantilever end of the main supporting steel beam and are vertically distributed with the main supporting steel beam, the formwork support frame is arranged above the secondary supporting steel beam, the roof cantilever structure formwork is fixed on the top of the formwork support frame, a scaffold with a double-row external frame structure is erected on the outside of the formwork support frame, and the lower part of the scaffold is connected to the main supporting steel beam.

[0007] Furthermore, the main supporting steel beam is fixedly connected to the top floor via a U-shaped clamp; the secondary supporting steel beam is fixedly connected to the main supporting steel beam via a U-shaped clamp, or the secondary supporting steel beam is welded to the main supporting steel beam.

[0008] Furthermore, the formwork support frame is provided with vertical scissors braces distributed along the vertical plane, and the formwork support frame is provided with horizontal scissors braces distributed along the horizontal plane, thereby improving the overall supporting strength and safety.

[0009] Specifically, horizontal scissor braces are provided on the top and bottom of the formwork support frame.

[0010] Furthermore, a plurality of U-shaped adjustable top supports are arranged between the top of the formwork support frame and the roof cantilever structure formwork.

[0011] Specifically, the U-shaped adjustable top support is connected to the double steel tube keel support structure at the bottom of the roof cantilever structure template.

[0012] Furthermore, the scaffold and the formwork support frame both include a plurality of vertical poles, a plurality of transverse horizontal steel pipes and a plurality of longitudinal horizontal steel pipes, and the vertical poles, transverse horizontal steel pipes and longitudinal horizontal steel pipes are vertically distributed and connected to each other. The vertical poles, transverse horizontal steel pipes and longitudinal horizontal steel pipes are assembled using fasteners and other connection structures, so as to quickly erect the formwork support frame and the scaffold.

[0013] Furthermore, the main support steel beam and the secondary support steel beam are respectively welded with vertical positioning columns plug-connected to the bottom of the vertical pole. By welding the vertical positioning columns, the vertical pole can be accurately positioned and erected.

[0014] Furthermore, the scaffolding is provided with a facade scissors brace on one side of the facade, which can improve the supporting strength and safety of the scaffolding.

[0015] Furthermore, the vertical uprights on the inner side of the scaffolding are connected to the wall connecting members by a tie-joint connection via a brace, thereby further improving the safety and stability of the scaffolding.

[0016] Furthermore, a first oblique support steel beam and a second oblique support steel beam are provided below the cantilevered end of the main support steel beam, the upper portion of the first oblique support steel beam is welded to the middle portion of the cantilevered end of the main support steel beam, the lower portion of the first oblique support steel beam is welded to the embedded steel plate on the side beam of the lower floor slab, the upper portion of the second oblique support steel beam is welded to the main support steel beam, and the lower portion of the second oblique support steel beam is welded to the middle portion of the first oblique support steel beam. By welding and fixing the first oblique support steel beam and the second oblique support steel beam, the cantilevered portion of the main support steel beam can be reinforced.

[0017] Furthermore, a supporting protection structure is laid between two adjacent secondary supporting steel beams, and the supporting protection structure includes longitudinal steel pipes, transverse steel pipes and square bars laid in layers from bottom to top, and a horizontal frame plate is laid above the square bar, and a side frame plate is laid on the side of the horizontal frame plate. By laying the supporting protection structure, the main supporting steel beam and the secondary supporting steel beam are closed to prevent safety accidents caused by falling objects from high places.

[0018] Compared with the prior art, the utility model provides a cantilever structure formwork support system for a double-eaved hip roof, which has the following beneficial effects:

[0019] (1) The utility model fixes a main supporting steel beam cantilevered outward on the top floor, and sets up a secondary supporting steel beam on the main supporting steel beam, so that the cantilevered main supporting steel beam and the secondary supporting steel beam are used to jointly support the formwork support frame, thereby achieving the fixation of the roof cantilever structure formwork, and in combination with the scaffolding set up outside the cantilever formwork support frame, the overall supporting strength and safety of the supporting system are effectively guaranteed, thereby improving the construction efficiency of the roof cantilever structure.

[0020] (2) The utility model reduces the high-altitude work and does not affect the construction work of the personnel below. It has a simple structure, uses less consumable materials such as steel pipes and fasteners, is easy to disassemble and assemble, has good flexibility, and is convenient to shorten the construction period. It is suitable for the construction of cantilever structures in the roof caves of high-rise buildings, especially some high-rise and small-rise buildings, which have many eaves on the top of the floors. Due to the large height, it is impossible to set up ground-based scaffolding. The cantilever structure formwork support system of the double-eaved hip roof of the utility model can provide support safely and reliably, caters to this need, and solves the problem of cantilever structure formwork support for multi-story, high-rise and small-rise roofs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 Schematic diagram of laying supporting protection structure on the main supporting steel beam.

[0024] Figure numerals: 1. Main supporting steel beam; 11. Secondary supporting steel beam; 12. First oblique supporting steel beam; 13. Second oblique supporting steel beam; 14. Longitudinal steel pipe; 15. Transverse steel pipe; 16. Square bar; 17. Horizontal frame; 18. Side frame; 19. Vertical positioning column; 2. Formwork support frame; 21. Vertical upright; 22. Transverse horizontal steel pipe; 23. Longitudinal horizontal steel pipe; 3. Scaffolding; 4. Vertical scissors brace; 5. Horizontal scissors brace; 6. External facade scissors brace; 7. Casting; 8. Roof cantilever structure formwork; 81. U-shaped adjustable top support; 9. Top floor; 91. U-shaped clamp; 10. Lower floor; 101. Embedded steel plate. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to Figure 1 and Figure 2 The present embodiment provides a cantilever structure formwork support system for a double-eaved hip roof, comprising a main supporting steel beam 1 located at the roof cantilever, a formwork support frame 2 and a roof cantilever structure formwork 8, wherein the main supporting steel beam 1 is provided with a plurality of parallel distributions along a horizontal plane, one end of the main supporting steel beam 1 is fixedly connected to the top floor 9, and the other end of the main supporting steel beam 1 extends to the external cantilever distribution of the top floor 9; the main supporting steel beam 1 is provided with a plurality of secondary supporting steel beams 11 vertically distributed with the main supporting steel beam 1 above the cantilever end, the formwork support frame 2 is arranged above the secondary supporting steel beam 11, the roof cantilever structure formwork 8 is fixed on the top of the formwork support frame 2, a double-row external frame structure scaffold 3 is erected on the outside of the formwork support frame 2, and the lower part of the scaffold 3 is connected to the main supporting steel beam 1.

[0027] In some specific embodiments, reference Figure 1 and Figure 2 , the main support steel beam 1 is fixedly connected to the top floor 9 through a U-shaped clamp 91; the secondary support steel beam 11 is welded to the main support steel beam 1. In some other embodiments, the secondary support steel beam 11 can also be fixedly connected to the main support steel beam 1 through a U-shaped clamp 91.

[0028] In some specific embodiments, reference Figure 1 In order to improve the overall support strength and safety, the formwork support frame 2 is provided with vertical scissors braces 4 distributed along the vertical plane, and the formwork support frame 2 is provided with horizontal scissors braces 5 distributed along the horizontal plane. Specifically, the upper and bottom parts of the formwork support frame 2 are provided with horizontal scissors braces 5.

[0029] In some specific embodiments, reference Figure 1 A plurality of U-shaped adjustable top supports 81 are provided between the top of the template support frame 2 and the roof cantilever structure template 8. Specifically, the U-shaped adjustable top supports 81 are connected to the double steel pipe keel support structure at the bottom of the roof cantilever structure template 8.

[0030] In some specific embodiments, reference Figure 1 and Figure 2The scaffold 3 and the formwork support frame 2 both include a plurality of vertical poles 21, a plurality of transverse horizontal steel pipes 22, and a plurality of longitudinal horizontal steel pipes 23. The vertical poles 21, the transverse horizontal steel pipes 22, and the longitudinal horizontal steel pipes 23 are vertically distributed and connected to each other. The vertical poles, the transverse horizontal steel pipes, and the longitudinal horizontal steel pipes are assembled using fasteners and other connection structures, so as to quickly erect the formwork support frame and the scaffold.

[0031] In order to accurately locate and fix the vertical poles, refer to Figure 2 The main support steel beam 1 and the secondary support steel beam 11 are respectively welded with vertical positioning columns 19 that are plugged into the bottom of the vertical pole 21.

[0032] In order to improve the support strength and safety of the scaffolding, refer to Figure 1 The scaffolding 3 is provided with a facade scissors brace 6 on one side of the facade.

[0033] In order to further improve the safety and stability of the scaffolding, refer to Figure 1 The vertical uprights on the inner side of the scaffolding 3 are also connected to the wall connecting members through a brace 7.

[0034] In addition, as an improved embodiment, reference is made to Figure 1 and Figure 2 The main support steel beam 1 is provided with a first oblique support steel beam 12 and a second oblique support steel beam 13 below the cantilever end. The upper portion of the first oblique support steel beam 12 is welded to the middle portion of the cantilever end of the main support steel beam 1, the lower portion of the first oblique support steel beam 12 is welded to the embedded steel plate 101 on the side beam of the lower floor slab 10, the upper portion of the second oblique support steel beam 13 is welded to the main support steel beam 1, and the lower portion of the second oblique support steel beam 13 is welded to the middle portion of the first oblique support steel beam 12. By welding and fixing the first oblique support steel beam and the second oblique support steel beam, the cantilever portion of the main support steel beam can be reinforced.

[0035] Due to the cantilevered position, in order to further provide construction safety, refer to Figure 2 A supporting protection structure is laid between two adjacent secondary supporting steel beams 11, and the supporting protection structure includes longitudinal steel pipes 14, transverse steel pipes 15 and square bars 16 laid in layers from bottom to top, and a horizontal frame plate 17 is laid above the square bar 16, and a side frame plate 18 is provided on the side of the horizontal frame plate 17. By laying the supporting protection structure, the main supporting steel beams and the secondary supporting steel beams are closed to prevent safety accidents caused by falling objects from high places.

[0036] In this embodiment, specifically, as an example, the main support steel beam 1 adopts 12m long 18# I-beam, which is distributed at intervals of 1500mm and cantilevered outward by 5.3m; the secondary support steel beam 11 adopts 6m long 12.6# I-beam, which is distributed at intervals of 900mm, and the distance between the bottom of the beam is encrypted according to calculation; the first oblique support steel beam 12 adopts 18# I-beam, and the angle between it and the main support steel beam 1 is 65 degrees; the second oblique support steel beam 13 adopts 18# I-beam, and the angle between it and the first oblique support steel beam 12 is 46 degrees; the longitudinal steel pipe 14 adopts an oblong steel pipe Steel pipes, the horizontal steel pipe 15 adopts short round steel pipes; the square bar 16 adopts 50mm*70mm square wood strips; the horizontal frame plate 17 and the side frame plate 18 adopt 15mm thick plywood; the vertical pole 21, the horizontal horizontal steel pipe 22, and the longitudinal horizontal steel pipe 23 all adopt hollow round steel pipes; the vertical positioning column 19 adopts a steel bar with a length of 150mm and a diameter of 25mm; the U-shaped clamp 91 adopts a round steel with a diameter of 18mm bent to form a U-shaped hoop; the embedded steel plate 101 adopts a steel plate of 300mm*200mm*10mm.

[0037] The construction steps of the cantilever structure formwork support system of the double-eaved hip roof provided in this embodiment are as follows:

[0038] (1) When the concrete strength of the top floor 9 used for cantilevering and fixing the main supporting steel beams reaches 75%, a plurality of main supporting steel beams 1 are fixed by using U-shaped clamps 91, with the interval between adjacent main supporting steel beams 1 being 1500 mm, and cantilevered outward by 5.3 m;

[0039] (2) The first oblique support steel beam 12 and the second oblique support steel beam 13 are welded below the cantilevered end of the main support steel beam 1, the upper portion of the first oblique support steel beam 12 is welded to the middle portion of the cantilevered end of the main support steel beam 1, the lower portion of the first oblique support steel beam 12 is welded to the embedded steel plate 101 on the side beam of the lower floor slab 10, the upper portion of the second oblique support steel beam 13 is welded to the main support steel beam 1, and the lower portion of the second oblique support steel beam 13 is welded to the middle portion of the first oblique support steel beam 12;

[0040] (3) A plurality of secondary support steel beams 11 are welded above the cantilevered end of the main support steel beam 1 and are distributed perpendicularly to the main support steel beam, with a spacing of 900 mm. The spacing between the bottom of the beams is set according to the calculation;

[0041] (4) A formwork support frame 2 is supported on the secondary support steel beam 11, and a U-shaped adjustable top support 81 for supporting the roof cantilever structure formwork 8 is installed on the top of the erected vertical pole 21. The vertical and horizontal spacing of the vertical poles below the formwork is 900 mm. The spacing of the vertical poles below the beam is arranged through calculation. A vertical and horizontal sweeping rod is set at the lower part of the vertical pole at a height of 200 mm from the secondary support steel beam; the formwork support frame 2 is provided with multiple vertical scissor braces 4 and horizontal scissor braces 5. The scissor braces must be connected from top to bottom and distributed close to the main node;

[0042] (5) In the gap between two adjacent secondary support steel beams 11, longitudinal steel pipes 14, transverse steel pipes 15 and square bars 16 are laid in layers from bottom to top, and then a horizontal frame plate 17 is laid above the square bars 16, and a side frame plate 18 is fixed on the side of the horizontal frame plate 17, so as to close the main support steel beam and the secondary support steel beam to prevent safety accidents caused by falling objects from high places;

[0043] (6) A scaffolding 3 with a double-row external frame structure is set up on the outside of the formwork support frame 2, and then an external facade scissors brace 6 is set up on one side of the external facade of the scaffolding 3, and the vertical uprights on the inner side of the scaffolding 3 are connected to the wall connecting parts through a tie brace 7.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cantilever structure formwork support system for a double-eaved hip roof, comprising a main support steel beam located at the cantilever of the roof, a formwork support frame and a cantilever structure formwork for the roof, characterized in that: The main supporting steel beams are provided with multiple parallel distributions along the horizontal plane, one end of the main supporting steel beam is fixedly connected to the top floor, and the other end of the main supporting steel beam is extended to the external cantilever distribution of the top floor; a plurality of secondary supporting steel beams are provided above the cantilevered end of the main supporting steel beam and are vertically distributed with the main supporting steel beam, the formwork support frame is arranged above the secondary supporting steel beam, the roof cantilever structure formwork is fixed on the top of the formwork support frame, a scaffolding with a double-row external frame structure is erected on the outside of the formwork support frame, and the lower part of the scaffolding is connected to the main supporting steel beam.

2. The cantilever structure formwork support system of the double-eaved hip roof according to claim 1 is characterized by: The main supporting steel beam is fixedly connected to the top floor through a U-shaped clamp; the secondary supporting steel beam is fixedly connected to the main supporting steel beam through a U-shaped clamp, or the secondary supporting steel beam is welded to the main supporting steel beam.

3. The cantilever structure formwork support system of the double-eaved hip roof according to claim 1 is characterized by: The formwork support frame is provided with vertical scissors braces distributed along the vertical plane, and the formwork support frame is provided with horizontal scissors braces distributed along the horizontal plane.

4. The cantilever structure formwork support system of the double-eaved hip roof according to claim 1 is characterized by: A plurality of U-shaped adjustable top supports are arranged between the top of the formwork support frame and the roof cantilever structure formwork.

5. The cantilever structure formwork support system of the double-eaved hip roof according to claim 1 is characterized by: The scaffolding and the formwork support frame both include a plurality of vertical poles, a plurality of transverse horizontal steel pipes and a plurality of longitudinal horizontal steel pipes, and the vertical poles, the transverse horizontal steel pipes and the longitudinal horizontal steel pipes are vertically distributed and connected to each other.

6. The cantilever structure formwork support system of the double-eaved hip roof according to claim 5 is characterized by: The main supporting steel beam and the secondary supporting steel beam are respectively welded with vertical positioning columns which are plug-connected with the bottom of the vertical pole.

7. The cantilever structure formwork support system of the double-eaved hip roof according to claim 5 is characterized by: The scaffolding is provided with an exterior facade scissors brace on one side of the exterior facade.

8. The cantilever structure formwork support system of the double-eaved hip roof according to claim 5 is characterized by: The vertical upright poles on the inner side of the scaffolding are connected to the wall connecting pieces by tensioning through a brace.

9. The cantilever structure formwork support system of the double-eaved hip roof according to any one of claims 1 to 8, characterized in that: A first oblique supporting steel beam and a second oblique supporting steel beam are provided below the cantilevered end of the main supporting steel beam, the upper portion of the first oblique supporting steel beam is welded to the middle portion of the cantilevered end of the main supporting steel beam, the lower portion of the first oblique supporting steel beam is welded to the embedded steel plate on the side beam of the lower floor slab, the upper portion of the second oblique supporting steel beam is welded to the main supporting steel beam, and the lower portion of the second oblique supporting steel beam is welded to the middle portion of the first oblique supporting steel beam.

10. The cantilever structure formwork support system of a double-eaved hip roof according to any one of claims 1 to 8, characterized in that: A supporting and protective structure is laid between two adjacent secondary supporting steel beams. The supporting and protective structure includes longitudinal steel pipes, transverse steel pipes and square bars laid in layers from bottom to top, horizontal frame plates are laid above the square bars, and side frame plates are provided on the sides of the horizontal frame plates.

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