Formwork hanging device of U-shaped round steel for I-shaped beam bridge deck pavement

Abstract

The utility model discloses a U-shaped round steel formwork hanging device for I-shaped beam bridge deck pavement, which relates to the technical field of bridge deck pavement and comprises U-shaped hanging rods, main beams and back ridges, two adjacent main beams are connected through the U-shaped hanging rods, and the back ridges are uniformly distributed on the main beams; a wood formwork is laid on the back arris; external threads are arranged at the two ends of the U-shaped suspender, a mounting hole for the U-shaped suspender to penetrate through is formed in the end part of the main beam, and the external threads are connected with a nut to fix the U-shaped suspender on the main beam; by arranging the U-shaped hanging rod, the main beam and the back arris, construction is convenient, the safety risk is small, various auxiliary materials can be recycled, and bottom formwork hanging construction of I-shaped beam bridge deck pavement can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge deck paving, in particular to a suspended formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel. Background Art

[0002] At present, the center pile number of the Changhuajiang Bridge (left and right lanes) is K425+587, and the span composition is (3×30)+4×(4×30)+(3×30) m, with the total bridge length of 671.5 m. The superstructure type is precast prestressed concrete simply supported "I"-shaped beam, with 5 beams arranged transversely in a single span and the distance between two beams being 2 m. The original bridge deck structure form is 5 cm bottom slab + 12 cm cast-in-place paving layer + 13 cm asphalt layer. The renovation plan is 20 cm cast-in-place paving layer + 10 cm asphalt layer.

[0003] At present, the original bridge uses precast slabs as the bottom formwork of the paving layer. The existing bridge bottom formwork generally uses brackets for support. Using precast slabs as the bottom formwork, the cast-in-place concrete paving layer and the precast concrete slabs cannot be perfectly combined. As the service life increases, the concrete structure is prone to diseases and the structural durability is poor; in addition, using brackets for support as the bottom formwork has high construction difficulty, high measure costs and low cost performance. Therefore, this application proposes a suspended formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel. Content of the Utility Model

[0004] The utility model provides a suspended formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel, aiming to solve the existing problems.

[0005] To achieve the above object, the utility model provides a suspended formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel, which includes U-shaped suspenders, main beams and backing ribs. The adjacent two main beams are connected by U-shaped suspenders, and the backing ribs are evenly arranged on the main beams; a wooden formwork is laid on the backing ribs; the two ends of the U-shaped suspenders are provided with external threads, and the ends of the main beams are provided with mounting holes for the U-shaped suspenders to pass through, and the external threads are fixed to the main beams by connecting with nuts.

[0006] Preferably, the U-shaped suspenders are round steel; the main beams are square steel; the backing ribs are square wood. The diameter of the U-shaped suspenders is 16 mm. The size of the main beams is 120 mm×60 mm×4 mm. The size of the backing ribs is 60 mm×40 mm.

[0007] Compared with the prior art, it has the following beneficial effects:

[0008] This application discloses a suspended formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel. By setting U-shaped suspenders, main beams and backing ribs, the construction is convenient, the safety risk is small, various auxiliary materials can be recycled, and it can meet the bottom formwork suspended formwork construction of the "I"-shaped beam bridge deck paving. Brief Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 It is a schematic diagram of a formwork suspension device for the deck paving of an "I"-shaped beam using a U-shaped steel bar in this application.

[0011] Reference numerals: 1 - U-shaped hanging rod; 2 - main beam; 3 - backing beam; 4 - wooden formwork; 5 - external thread; 6 - nut; 7 - I-shaped beam. Detailed Embodiments

[0012] To more easily understand the structure of the present invention and the functional features and advantages that can be achieved, the following will describe the preferred embodiments of the present invention in detail in conjunction with the drawings as follows:

[0013] Embodiment:

[0014] As Figure 1 shown, the present invention provides a formwork suspension device for the deck paving of an "I"-shaped beam using a U-shaped steel bar, including a U-shaped hanging rod 1, a main beam 2, and a backing beam 3. Adjacent main beams 2 are connected by a U-shaped hanging rod 1, and the backing beams 3 are evenly arranged on the main beam 2; a wooden formwork 4 is laid on the backing beam 3; both ends of the U-shaped hanging rod 1 are provided with external threads 5, and an installation hole for the U-shaped hanging rod 1 to pass through is provided at the end of the main beam 2, and the external thread 5 is fixed to the main beam 2 by connecting with a nut 6.

[0015] Refer to Figure 1 , the U-shaped hanging rod 1 of this application is a round steel bar; the main beam 2 is a square steel bar; the backing beam 3 is a square wooden bar.

[0016] Refer to Figure 1 , the diameter of the U-shaped hanging rod 1 of this application is 16 mm.

[0017] Refer to Figure 1 , the size of the main beam 2 of this application is 120 mm × 60 mm × 4 mm.

[0018] Refer to Figure 1 , the size of the backing beam 3 of this application is 60 mm × 40 mm.

[0019] The installation process of this application: After the original bridge deck is demolished, the next formwork support installation process is carried out. The space interval formed by the on-site I-shaped main beam 2 and the diaphragm is 5 m × 2 m. Taking 1 space as an example for the installation of the formwork suspension device.

[0020] The formwork support is erected in the form of a hanging bracket. The support takes the I-beam 7 as the fulcrum and uses 16-mm HPB300 U-shaped round steel as the suspension rod, that is, the spacing of the U-shaped suspension rods 1 is arranged at 1 m. The main beam 2 is a square steel with a size of 120 mm × 60 mm × 4 mm. φ18-mm holes are set at the corresponding positions on the square steel for fixation. The backing strip 3 is made of a 60-mm × 40-mm wooden square. A wooden formwork 4 is laid above the wooden square as the bottom formwork of the new bridge deck.

[0021] The above is only the preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes and modifications to the technical solution of the present utility model by using the above technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present utility model without departing from the content of the technical solution of the present utility model all fall within the protection scope of this technical solution.

Claims

1. A hanging formwork device for the bridge deck paving of an "I"-shaped beam using U-shaped round steel, characterized in that, It includes a U-shaped hanging rod (1), a main beam (2) and a backing strip (3). Adjacent two main beams (2) are connected by the U-shaped hanging rod (1), and the backing strips (3) are evenly arranged on the main beam (2); a wooden formwork (4) is laid on the backing strip (3); external threads (5) are provided at both ends of the U-shaped hanging rod (1), and an installation hole for the U-shaped hanging rod (1) to pass through is provided at the end of the main beam (2), and the U-shaped hanging rod (1) is fixed to the main beam (2) by connecting the external threads (5) with nuts (6).

2. The hanging formwork device for the bridge deck paving of the "I"-shaped beam using the U-shaped round steel according to claim 1, characterized in that, The U-shaped hanging rod (1) is a round steel; the main beam (2) is a square steel; the backing strip (3) is a square wood.

3. The hanging formwork device for the bridge deck paving of the I-shaped beam using the U-shaped steel as claimed in claim 2, wherein The diameter of the U-shaped hanging rod (1) is 16 mm.

4. The suspension formwork device for the bridge deck paving of the "I"-shaped beam using the U-shaped steel as claimed in claim 2, characterized in that, The size of the main beam (2) is 120 mm × 60 mm × 4 mm.

5. The suspension formwork device for the bridge deck paving of the I-shaped beam using the U-shaped steel as claimed in claim 2, characterized in that, The size of the backing strip (3) is 60 mm × 40 mm.

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