Novel steel structure roof parapet wall formwork structure

Abstract

The utility model discloses a novel steel structure roof parapet wall formwork structure. The novel steel structure roof parapet wall formwork structure comprises an outer formwork main beam and a reinforcing steel bar cable-stayed part. According to the novel steel structure roof parapet wall formwork structure, three tie bars are fixedly connected between the tops of outer formwork girders at equal intervals, a steel bar truss floor support plate is fixedly connected between the outer formwork girders and located on the front sides of the tie bars, inner formworks are arranged outside the outer formwork girders, opposite-pull screws penetrate through the inner formworks, and the opposite-pull screws penetrate through the outer formwork girders. According to the device, an external support is formed through the external mold main beam, reinforcement is conducted in cooperation with connection of tie bars, the external mold main beam is tensioned through the steel bar cable-stayed parts fixedly connected with the embedded steel bars, a steel bar truss floor support plate serves as an external formwork, and the steel bar truss floor support plate is fixedly connected with the external mold main beam through the steel bar cable-stayed parts. And a steel bar truss on the steel bar truss floor support plate is matched to serve as an outer formwork secondary beam for transverse reinforcement, so that the outer side formwork of the parapet wall is effectively supported under the condition that no outer operation platform exists.

Description

Technical Field

[0001] The utility model belongs to the technical direction of roof construction, and specifically relates to a novel steel structure roof parapet formwork structure. Background Art

[0002] During the construction of steel structure roofs, some buildings have no external frame, and there is no operating platform when supporting the side formwork of the parapet, which makes it impossible to support and fix the outer formwork of the parapet well. Therefore, a new type of steel structure roof parapet formwork structure is proposed to solve the above situation. Utility Model Content

[0003] The purpose of the utility model is to propose a novel steel structure roof parapet formwork structure in view of the existing technology, so as to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a new type of steel structure roof parapet formwork structure, including an outer formwork main beam and embedded steel bars welded and fixed at equal distances on the top of a steel beam or a curtain wall, three tie bars are fixedly connected at equal distances between the tops of the outer formwork main beams, and a steel truss floor deck is fixedly connected between the outer formwork main beams and in front of the tie bars. The steel trusses on the steel truss floor deck are used as outer formwork secondary beams, and three tension screws are connected at equal distances on the outer formwork main beam. An inner formwork is provided outside the outer formwork main beam, and the tension screws pass through the inner formwork. The adjacent ends of the tension screws are welded and fixed to the outer formwork main beam, and the top of the outer formwork main beam is fixedly connected with a steel bar inclined downward, and the bottom end of the steel bar inclined is connected to the embedded steel bar, and the embedded steel bar is embedded in the roof panel.

[0005] As a further solution of the present invention: a plurality of inner mold secondary beams are arranged transversely and parallelly on the outer surface of the inner mold formwork, a plurality of inner mold main beams are arranged transversely and parallelly on the outer side of the inner mold secondary beams, the inner mold main beams and the outer mold main beams correspond to each other, and the tension screw passes through the middle of the inner mold main beam.

[0006] As a further solution of the present invention: the outer formwork main beam is composed of two L50*5 galvanized angle steels welded together, the height of the outer formwork main beam is 1320mm, the setting spacing of the outer formwork main beam is 1200mm, the tie bar is 50*5 galvanized flat iron, the first tie bar is 600mm away from the roof panel, the spacing between the three tie bars is 300mm, and the steel truss floor deck is composed of two 600mm wide steel truss floor decks.

[0007] As a further solution of the present invention: the tension screws are M14 tension screws, the setting spacing of the tension screws is 400mm, the inclined steel bars are C14 steel bars, the embedded steel bars are C16 steel bars, and the length of the embedded steel bars is 200mm.

[0008] As a further solution of the present invention: the inner formwork adopts 18mm thick facing wood plywood, the spacing between the inner formwork and the steel truss floor decking is 250mm, the inner formwork secondary beam adopts 90*90mm rectangular wooden slats, the spacing between the inner formwork secondary beams is 200mm and they are arranged horizontally, the inner formwork main beam adopts double φ48 steel pipes, and the two φ48 steel pipes are clamped and tightened by tension screws.

[0009] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0010] (1) The outer formwork main beam is used to form an external support, which is reinforced by connecting with tie bars. The outer formwork main beam is tightened by the steel bars fixedly connected to the embedded steel bars. The steel truss floor deck is used as the outer formwork, and the steel truss on the steel truss floor deck is used as the outer formwork secondary beam for transverse reinforcement, thereby effectively supporting the outer formwork of the parapet without an external operating platform;

[0011] (2) By setting the inner formwork secondary beam and the inner formwork main beam on the outside of the inner formwork, the structure of the inner formwork can be strengthened to reduce the possibility of casting deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the position of the outer formwork main beam of a new type of steel structure roof parapet formwork structure;

[0014] Figure 2 This is a schematic diagram of the installation of steel truss floor decking in a new type of steel structure roof parapet formwork structure;

[0015] Figure 3 This is a schematic diagram of the inner formwork in a new type of steel structure roof parapet formwork structure.

[0016] In the figure: 1. Outer formwork main beam; 2. Tie bar; 3. Steel truss floor deck; 4. Inner formwork main beam; 5. Outer formwork secondary beam; 6. Tension screw; 7. Inner formwork; 8. Steel bar diagonal tension; 9. Embedded steel bar; 10. Inner formwork secondary beam. DETAILED DESCRIPTION

[0017] The following is a non-limiting detailed description of the technical solution of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: a new type of steel structure roof parapet formwork structure, including an outer formwork main beam 1 and embedded steel bars 9 welded and fixed at equal distances on the top of the steel beam or curtain wall, three tie bars 2 are fixedly connected at equal distances between the tops of the outer formwork main beams 1, and a steel truss floor deck 3 is fixedly connected between the outer formwork main beams 1 and in front of the tie bars 2. The steel truss on the steel truss floor deck 3 serves as the outer formwork secondary beam 5, and three tension screws 6 are connected at equal distances on the outer formwork main beam 1. An inner formwork 7 is provided outside the outer formwork main beam 1, and the tension screws 6 pass through the inner formwork 7. The adjacent ends of the tension screws 6 are welded and fixed to the outer formwork main beam 1, and the top of the outer formwork main beam 1 is fixedly connected with a steel bar inclined pull 8 arranged obliquely downward, which also passes through the inner formwork 7. The bottom ends of the steel bar inclined pull 8 are connected to the embedded steel bars 9, which are embedded in the roof panel, and the thickness of the roof panel is 120 mm.

[0019] The outer formwork main beam 1 is used to form an external support, which is reinforced by the connection of the tie bar 2. The outer formwork main beam 1 is tightened by the steel bar diagonal 8 fixedly connected to the embedded steel bar 9. The steel truss floor deck 3 is used as the outer formwork, and the steel truss on the steel truss floor deck 3 is used as the outer formwork secondary beam 5 for horizontal reinforcement, thereby effectively supporting the outer formwork of the parapet without an external operating platform.

[0020] The outer surface of the inner formwork 7 is provided with multiple inner formwork secondary beams 10 in parallel and transversely, and the outer side of the inner formwork secondary beams 10 is provided with multiple inner formwork main beams 4 in parallel and transversely. The inner formwork main beams 4 correspond to the outer formwork main beams 1, and the tension screw 6 passes through the middle of the inner formwork main beam 4.

[0021] An inner formwork secondary beam 10 and an inner formwork main beam 4 are arranged on the outer side of the inner formwork 7, so as to strengthen the structure of the inner formwork 7 and reduce the possibility of deformation during casting.

[0022] The outer formwork main beam 1 is made of two L50*5 galvanized angle steels welded together. The height of the outer formwork main beam 1 is 1320mm, and the setting spacing of the outer formwork main beam 1 is 1200mm. The tie bar 2 is 50*5 galvanized flat iron. The first tie bar 2 is 600mm high from the roof panel. The spacing between the three tie bars 2 is 300mm. The steel truss floor deck 3 is composed of two 600mm wide steel truss floor decks.

[0023] The tension screws 6 are M14 tension screws, the setting spacing of the tension screws 6 is 400 mm, the steel bars 8 are C14 steel bars, the embedded steel bars 9 are C16 steel bars, and the length of the embedded steel bars 9 is 200 mm.

[0024] The inner formwork 7 adopts 18mm thick facing wood plywood, the distance between the inner formwork 7 and the steel truss floor decking 3 is 250mm, the inner formwork secondary beam 10 adopts 90*90mm rectangular wooden slats, the inner formwork secondary beam 10 is arranged horizontally with a spacing of 200mm, and the inner formwork main beam 4 adopts double φ48 steel pipes, and the two φ48 steel pipes are clamped and tightened by the tension screw 6.

[0025] The working principle of this utility model is:

[0026] To facilitate the installation of the parapet's side reinforcement truss plates and the binding of the parapet's vertical reinforcement plates, the parapet concrete is poured in layers. The first pour is at a height of 230mm and is poured simultaneously with the roof concrete. During the first pour, the inner formwork is suspended at a height of 230mm. The pouring speed is carefully controlled. When vibrating the concrete, ensure that the side formwork is protected, keeping the vibrating rod 50-100mm away from the side formwork.

[0027] The second pouring height is 485mm. Control the pouring speed of concrete during pouring. When vibrating the concrete, pay attention to the distance between the vibrating rod and the side form, and ensure that the vibrating rod is away from the side of the edge form.

[0028] The third pouring height is 485mm. Control the pouring speed of concrete during pouring. Pay attention to the distance between the vibrating rod and the side form when vibrating the concrete, and ensure that the vibrating rod is away from the side of the adjacent side form.

[0029] During the layered pouring process, the interval between pouring each layer should be less than the initial setting time of the concrete.

[0030] The order of dismantling the mold is: dismantle the first support last, and dismantle the last support first.

[0031] The inner formwork of the parapet must be removed only after the concrete reaches the demolding strength required by the design specifications. The formwork should be removed only when the concrete strength is sufficient to ensure that its surface and edges are not damaged by demolding. A formwork pressure test report under the same conditions and a demolding notice approved by the supervisor should be provided.

[0032] The order and method of formwork removal should be carried out in accordance with the provisions of the panel design. It is strictly forbidden to use sledgehammers and crowbars to smash or pry when removing the formwork.

[0033] When removing the formwork, the operator should stand in a safe place to avoid safety accidents. After the formwork is completely removed, the formwork, matching plates, brackets, etc. should be cleaned up and transported out and stacked neatly according to civilized construction requirements.

[0034] It is strictly forbidden to throw away the dismantled templates and accessories. Someone must be there to receive and pass them on. They should be stacked in designated locations and cleaned, repaired and coated with isolation agents in a timely manner so that they are ready for use.

[0035] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0036] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A novel steel structure roof parapet formwork structure, comprising an outer formwork main beam (1) and pre-buried steel bars (9) welded and fixed at equal distances to a steel beam or the top of a curtain wall, characterized in that: Three tie bars (2) are fixedly connected at equal distances between the tops of the outer formwork main beams (1); a steel truss floor slab (3) is fixedly connected between the outer formwork main beams (1) and in front of the tie bars (2); the steel truss on the steel truss floor slab (3) serves as an outer formwork secondary beam (5); three tension screws (6) are connected at equal distances on the outer formwork main beam (1); an inner formwork (7) is provided outside the outer formwork main beam (1); the tension screws (6) pass through the inner formwork (7); the adjacent ends of the tension screws (6) are welded and fixed to the outer formwork main beam (1); a steel bar inclined pull (8) arranged obliquely downward is fixedly connected to the top of the outer formwork main beam (1); the bottom end of the steel bar inclined pull (8) is connected to a pre-buried steel bar (9); and the pre-buried steel bar (9) is pre-buried in the roof panel.

2. The novel steel structure roof parapet formwork structure according to claim 1 is characterized in that: The outer surface of the inner mold plate (7) is provided with a plurality of inner mold secondary beams (10) in parallel and transversely arranged, and the outer sides of the inner mold secondary beams (10) are provided with a plurality of inner mold main beams (4) in parallel and transversely arranged, the inner mold main beams (4) and the outer mold main beams (1) correspond to each other, and the tension screw rods (6) pass through the middle of the inner mold main beams (4).

3. The novel steel structure roof parapet formwork structure according to claim 1 is characterized in that: The outer formwork main beam (1) is formed by butt-welding two L50*5 galvanized angle steels. The height of the outer formwork main beam (1) is 1320 mm. The setting spacing of the outer formwork main beam (1) is 1200 mm. The tie bar (2) is a 50*5 galvanized flat iron. The first tie bar (2) is 600 mm away from the roof panel. The spacing between the three tie bars (2) is 300 mm. The steel truss floor deck (3) is composed of two 600 mm wide steel truss floor decks.

4. The novel steel structure roof parapet formwork structure according to claim 1 is characterized by: The tension screws (6) are M14 tension screws, the spacing between the tension screws (6) is 400 mm, the steel bars (8) are C14 steel bars, the embedded steel bars (9) are C16 steel bars, and the length of the embedded steel bars (9) is 200 mm.

5. The novel steel structure roof parapet formwork structure according to claim 1 is characterized in that: The inner formwork (7) is made of 18mm thick cladding wood plywood, the spacing between the inner formwork (7) and the steel truss floor deck (3) is 250mm, the inner formwork secondary beam (10) is made of 90*90mm rectangular wooden slats, the spacing between the inner formwork secondary beams (10) is 200mm and arranged horizontally, and the inner formwork main beam (4) is made of double φ48 steel pipes.

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