Formwork erecting scaffold structure of cantilever concrete structure

Abstract

The utility model discloses a cantilever concrete structure formwork erecting scaffold structure which is erected and supported below a formwork of a cantilever concrete floor slab to be poured and comprises a single-row protection frame, a supporting scaffold and a cantilever formwork erecting platform. The overhanging formwork platform is provided with a plurality of profile steel main beams which are arranged on the shelving layer floor in a parallel, spaced and horizontally overhung mode and at least one profile steel connecting beam which is connected with the profile steel main beams in a crossing mode, and the overhanging portion of each profile steel main beam is provided with at least two steel pull rod assemblies which are connected to the upper pull layer floor in an obliquely upward mode in the overhanging extending direction. The bottoms of the supporting scaffold and the single-row protection frame are sequentially arranged on the cantilever part of the profile steel main beam in the cantilever extending direction. According to the utility model, the construction risk of the formwork scaffold can be reduced, the construction safety and reliability are ensured, and the construction period is shortened to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-altitude large cantilever concrete structure construction, and particularly relates to a formwork scaffolding structure for a cantilever concrete structure. Background Art

[0002] In order to pursue novel curtain wall facade shapes, more and more high-rise or super high-rise building structures tend to be provided with large-span cantilever structures locally during the design process. In order to control project costs, the cantilever structure may adopt a traditional reinforced concrete structure. Due to the characteristics of large clear height and heavy self-weight of the large-span reinforced concrete cantilever structure, construction problems such as difficulty in setting up formwork upright poles during construction and high safety risks in high-altitude edge operations are caused.

[0003] For the construction of large-span reinforced concrete cantilever structures, a construction method using a steel truss structure as a formwork platform is commonly adopted. However, this construction method has defects such as a large amount of steel used, resulting in a large self-weight of the platform, a large amount of high-altitude welding, causing great construction difficulty and difficulty in ensuring quality, a long construction period and accounting for an absolute construction period, etc. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a formwork scaffolding structure for a cantilever concrete structure, which can effectively reduce the construction risks brought by the difficulty in setting up formwork upright poles for high-altitude large cantilever reinforced concrete structures and the high safety risks in high-altitude edge operations, ensure the construction is safe and reliable, and also shorten the construction period to a certain extent.

[0005] To achieve the above purpose, the utility model is implemented by adopting the following technical scheme:

[0006] The utility model provides a formwork scaffolding structure for a cantilever concrete structure, which is erected and supported under the formwork of the cantilever concrete floor to be poured, and includes:

[0007] A single-row protective scaffold,

[0008] A support scaffolding,

[0009] And a cantilever formwork platform,

[0010] The cantilever formwork platform is configured with a plurality of parallel and spaced steel main beams horizontally cantilevered on the floor of the laying layer and at least one steel connecting beam spanning and connecting the steel main beams. At least two steel tie rod assemblies are arranged on the cantilever part of the steel main beam along the cantilever extension direction and obliquely upwardly connected to the floor of the upper pulling layer. The bottoms of the support scaffolding and the single-row protective scaffold are sequentially arranged on the cantilever part of the steel main beam along the cantilever extension direction.

[0011] Furthermore, the resting and lapping part of each steel section main beam is fixedly penetrated by a number of U-shaped steel rings embedded in the floor of the resting layer, and hardwood wedges are used to wedge tightly in the gap between the U-shaped steel rings and the steel section main beam.

[0012] Furthermore, four U-shaped steel rings are configured. Two U-shaped steel rings with a spacing of 200 mm are arranged at a position not less than 300 mm from the end of the resting and lapping part of the steel section main beam. One U-shaped steel ring is arranged at a position not less than 100 mm from the edge of the floor of the resting layer. One U-shaped steel ring is arranged at the middle position of the resting and lapping part of the steel section main beam.

[0013] Furthermore, a number of steel pipes are arranged in parallel at intervals and span across the steel section main beam of the cantilever formwork support platform. At least one layer of safety catch nets is laid and fixed on the steel pipes, and a number of wooden squares are arranged in parallel at intervals and span across the steel pipes on the safety catch nets, and formwork is laid on the wooden squares.

[0014] Furthermore, the steel tie rod assembly includes two adjustable tie rods. The bottom ends of the two adjustable tie rods are anchored to the ear plates at the same position of the steel section main beam through high-strength bolts, and the top ends are respectively anchored to two embedded steel casings at the same height on the upper pull layer floor through high-strength bolts;

[0015] Furthermore, an adjusting flower basket is arranged on the adjustable tie rod.

[0016] Furthermore, an inverted U-shaped top support is connected to the bottom of the vertical poles of the support scaffold and the single-row protection scaffold, and is buckled on the top surface of the steel section main beam; and a limiting steel bar vertically extending through the U-shaped top support and the bottom of the vertical pole is welded on the steel section main beam.

[0017] Furthermore, a limiting steel section for leaning against the side edge of the floor of the resting layer is welded below the steel section main beam.

[0018] Furthermore, the single-row protection scaffold includes protection vertical poles and protection horizontal bars that are buckled and lapped along the vertical plane in a vertical and horizontal manner, and protection nets erected vertically.

[0019] Furthermore, the single-row protection scaffold is connected to the support scaffold through a number of cross bars.

[0020] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The formwork support scaffold structure of the cantilever concrete structure of the present utility model is erected and supported under the formwork of the cantilever concrete floor to be poured. Specific structural relationships such as a cantilever formwork support platform, a single-row protection scaffold, and a support scaffold are set up, effectively reducing the construction risks brought by the difficulty of setting up the formwork vertical poles of the high-altitude large-cantilever reinforced concrete structure and the high safety risks of high-altitude edge operations, ensuring the safety and reliability of construction, and also shortening the construction period to a certain extent. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a formwork scaffolding structure for a cantilever concrete structure provided according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a steel tie rod assembly provided according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a cantilever formwork platform provided according to an embodiment of the present invention;

[0024] Figure 4 It is a partial schematic diagram of a scaffolding structure provided according to an embodiment of the present invention.

[0025] In the figure:

[0026] 1, steel main beam; 2, steel tie rod assembly; 3, adjusting flower basket; 4, high-strength bolt; 5, U-shaped steel ring; 6, limiting steel; 7, steel connecting beam; 8, steel pipe; 9, safety net; 10, wooden square; 11, formwork; 12, limiting steel bar; 13, protective vertical pole; 14, protective horizontal bar; 15, protective net; 16, steel sleeve; 17, ear plate; 18, floor of the shelving layer; 19, floor of the upper pulling layer; 20, structural beam; 21, U-shaped top support; 22, fastener; 23, cross bar; 24, support scaffolding. Detailed Embodiments

[0027] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] As Figure 1 shown, in the embodiment of the present utility model, a formwork scaffolding structure for a cantilever concrete structure is provided, which is erected and supported under the formwork 11 of the cantilever concrete floor slab to be poured, and includes:

[0031] A single-row protective scaffold,

[0032] A support scaffold 24,

[0033] And a cantilever formwork platform,

[0034] The cantilever formwork platform is configured with a plurality of main steel beams 1 that are parallel, spaced apart, and horizontally cantilevered on the floor surface 18 of the laying layer, and at least one connecting steel beam 7 that spans and connects the main steel beams 1. At least two steel tie rod assemblies 2 that are obliquely upwardly connected to the upper tension layer floor surface 19 are arranged along the cantilever extension direction on the cantilever part of the main steel beam 1. The bottoms of the support scaffold 24 and the single-row protective scaffold are respectively arranged on the cantilever part of the main steel beam 1 in sequence along the cantilever extension direction.

[0035] As Figure 1 shown, in this embodiment, the laying and lapping part of each main steel beam 1 is penetrated and fixed to a plurality of U-shaped steel rings 5 embedded in the floor surface 18 of the laying layer, and the gap between the U-shaped steel ring 5 and the main steel beam 1 is wedged tightly with hard wooden wedges.

[0036] Four U-shaped steel rings 5 are configured. Two U-shaped steel rings 5 with a spacing of 200 mm are arranged at a position not less than 300 mm from the end of the laying and lapping part of the main steel beam 1. One U-shaped steel ring 5 is arranged at a position not less than 100 mm from the edge of the floor surface 18 of the laying layer. One U-shaped steel ring 5 is arranged at the middle position of the laying and lapping part of the main steel beam 1.

[0037] As Figure 3 shown, the main steel beam 1 of the cantilever formwork platform is configured with a plurality of steel pipes 8 that are parallel, spaced apart, and span across the main steel beam 1. At least one layer of safety net 9 is laid and fixed on the steel pipes 8, and a plurality of wooden squares 10 that are parallel, spaced apart, and span across the steel pipes 8 are arranged on the safety net 9, and the formwork 11 is laid on the wooden squares 10.

[0038] As Figure 2As shown in the figure, the steel tie rod assembly 2 includes two adjustable tie rods. The bottom ends of the two adjustable tie rods are anchored to the ear plates 17 at the same position on the profiled steel main beam 1 through high-strength bolts 4, and the top ends are respectively anchored to two embedded steel sleeves 16 at the same height on the upper tension floor 19 through high-strength bolts 4.

[0039] An adjusting flower basket 3 is arranged on the adjustable tie rod.

[0040] As Figure 4 shown in the figure, an inverted U-shaped jack 21 is connected to the bottom of the vertical poles of the support scaffold 24 and the single-row protection scaffold, and is buckled on the top surface of the profiled steel main beam 1; and a limiting steel bar 12 vertically extending through the U-shaped jack 21 and the bottom of the vertical pole is welded on the profiled steel main beam 1.

[0041] A limiting profiled steel 6 for leaning against the side edge of the laying floor 18 is welded below the profiled steel main beam 1.

[0042] As Figure 1 shown in the figure, the single-row protection scaffold includes protection vertical poles 13 and protection horizontal bars 14 that are lapped by cross and longitudinal pipe fasteners in the vertical plane, and a protection net 15 erected vertically.

[0043] The single-row protection scaffold is connected to the support scaffold 24 through a number of cross bars 23.

[0044] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A cantilever concrete structure formwork scaffolding structure, which is set up and supported under the formwork of the cantilever concrete floor to be poured, characterized in that: include: Single row protective frame, Support scaffolding, And cantilevered formwork platform, The cantilevered formwork platform is equipped with a number of parallel, spaced and horizontally cantilevered steel main beams arranged on the shelf floor and at least one steel connecting beam spanning and connecting the steel main beams. At least two steel tie rod assemblies obliquely connected to the upper pull layer floor are arranged on the cantilevered portion of the steel main beam along the cantilever extension direction. The bottoms of the supporting scaffolding and the single-row protective frame are respectively arranged on the cantilevered portion of the steel main beam in sequence along the cantilever extension direction.

2. The cantilever concrete structure formwork scaffolding structure according to claim 1 is characterized in that: The laying overlapped part of each steel main beam is passed through and fixed to a plurality of U-shaped steel rings pre-buried in the floor of the laying layer, and the gap between the U-shaped steel ring and the steel main beam is wedged tightly with hardwood wedges.

3. The cantilever concrete structure formwork scaffolding structure according to claim 2 is characterized in that: There are four U-shaped steel rings, two U-shaped steel rings with an interval of 200mm are arranged at not less than 300mm at the end of the overlapping part of the steel main beam, one U-shaped steel ring is arranged at not less than 100mm at the edge of the floor of the laying layer, and one U-shaped steel ring is arranged at the middle position of the overlapping part of the steel main beam.

4. The cantilever concrete structure formwork scaffolding structure according to claim 1 is characterized in that: The steel main beam of the cantilever formwork platform is equipped with a plurality of steel pipes which are spaced in parallel and arranged across the steel main beam, at least one layer of safety net is laid and fixed on the steel pipe, and a plurality of wooden planks which are spaced in parallel and arranged across the steel pipe are arranged on the safety net, and the formwork is laid on the wooden planks.

5. The cantilever concrete structure formwork scaffolding structure according to claim 1 is characterized in that: The steel tie rod assembly includes two adjustable tie rods, the bottom ends of the two adjustable tie rods are anchored to the ear plates at the same position of the steel main beam by high-strength bolts, and the top ends are anchored to two pre-buried steel sleeves at the same height of the upper tie layer floor by high-strength bolts.

6. The cantilever concrete structure formwork scaffolding structure according to claim 5 is characterized in that: An adjusting flower basket is arranged on the adjustable pull rod.

7. The cantilever concrete structure formwork scaffolding structure according to claim 1 is characterized in that: The bottom of the vertical poles of the supporting scaffolding and the single-row protective frame are connected to an inverted U-shaped top bracket, which is inverted and clamped on the top surface of the steel main beam; and a limiting steel bar is welded on the steel main beam and extends vertically and passes through the U-shaped top bracket and the bottom of the vertical pole.

8. The cantilever concrete structure formwork scaffolding structure according to claim 1 is characterized in that: A limiting steel section is welded below the main steel beam and is used for clamping against the side edge of the shelving layer floor.

9. The cantilever concrete structure formwork scaffolding structure according to claim 1, characterized in that: The single-row protection frame comprises protection vertical poles and protection horizontal poles which are overlapped by longitudinal and transverse tube buckles along a vertical plane, and a protection net which is vertically erected.

10. The cantilever concrete structure formwork scaffolding structure according to claim 1, characterized in that: The single-row protection frame is connected to the supporting scaffold through a plurality of cross bars.

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