Quickly assembled cast-in-place box girder wing plate truss support frame

Abstract

The utility model relates to a kind of cast-in-place box girder wing plate truss support frame of fast assembly modulus adjustable, including support rod, truss sheet and longitudinal connecting component;Support rod is equipped with several, and sequentially along the length and width direction of box girder wing plate arrangement, U-shaped top support is equipped on the top end of support rod, truss sheet rests on U-shaped top support, and sequentially rests on arrangement along the width direction of box girder wing plate, longitudinal connecting component is inserted on the adjacent several truss sheets, and longitudinal connecting component is fixed between truss sheet by rotating fastener;The utility model uses longitudinal connecting component in truss, and it is quickly fixed between truss sheet by rotating fastener, construction efficiency is high, and truss sheet modulus can be adjusted according to construction needs, without redesigning different length longitudinal connecting piece, to reach the effect of cost saving, speed up construction progress.

Description

Technical Field

[0001] This utility model belongs to the field of construction technology of cast-in-place box girder in bridge engineering, and particularly relates to a quick-assembly modular adjustable cast-in-place box girder wing plate truss support frame. Background Technology

[0002] The general construction steps for traditional wing plate truss support frames are as follows: determine the truss module based on the stress calculation of the cast-in-place box girder formwork → prefabricate the truss and its connectors in the factory → install the truss on the top support according to the design module → connect each truss piece using connecting crossbars → lay square timber and formwork → cast-in-place box girder. Traditional truss support frames require complex longitudinal connections between truss pieces, resulting in slow construction speed. If the longitudinal connections need to be strengthened, the truss needs to be redesigned. If the truss module needs to be changed, longitudinal connectors of different lengths need to be produced, which is not economical. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a quick-assembly, modular adjustable cast-in-place box girder wing plate truss support frame. This allows for the rapid erection of the formwork frame during the construction of cast-in-place concrete box girder wing plates, and the truss module can be adjusted as needed to ensure the construction period and save costs.

[0004] The purpose of this utility model is achieved through the following technical solution: This quick-assembly, modularly adjustable cast-in-place box girder wing plate truss support frame includes support rods, truss plates, and longitudinal connecting components; several support rods are provided and arranged sequentially along the length and width directions of the box girder wing plate; a U-shaped top support is provided at the top of each support rod; the truss plates are placed on the U-shaped top support and arranged sequentially along the width direction of the box girder wing plate; the longitudinal connecting components are inserted into several adjacent truss plates, and the longitudinal connecting components are fixed to the truss plates by swivel fasteners.

[0005] The beneficial effects of this utility model are as follows: Compared with the prior art, the use of longitudinal connecting components in the truss and the quick fixation between them and the truss pieces by swivel fasteners result in high construction efficiency. Furthermore, the module of the truss pieces can be adjusted according to construction needs, eliminating the need to redesign longitudinal connecting components of different lengths, thereby achieving the effects of cost saving and accelerating construction progress.

[0006] Preferably, the truss plate includes a channel steel outer frame formed by four channel steels and round steel stiffeners composed of three steel pipes. The channel steels are arranged to form the required channel steel outer frame according to the structure of the box girder flange, and the slots of the channel steels all face the same side. The round steel stiffeners are fixed inside the channel steel outer frame by welding. Through the above structure, the truss plate has stronger support stability, and the fact that the slots of the channel steels face the same side makes it easier to process and form.

[0007] Preferably, the three steel pipes are connected in sequence, with one steel pipe arranged vertically along the height direction of the channel steel outer frame, and the other two steel pipes arranged obliquely, with one end welded and fixed to the vertically arranged steel pipe, and the other end welded and fixed to the end corner of the channel steel outer frame respectively; through the above structure, the three steel pipes are distributed vertically and obliquely within the channel steel outer frame, further enhancing the support stability of the channel steel outer frame.

[0008] Preferably, the longitudinal connection assembly includes two round steel pipes, which are respectively inserted into several adjacent truss segments and fixed to the two inclined steel pipes by swivel couplers. With the above structure, the longitudinal connection of the truss can be completed quickly by using swivel couplers, resulting in high construction efficiency.

[0009] Preferably, the two round steel pipes are fixed to the two steel pipes at an incline, with the incline direction being the same as that of the two steel pipes; this incline direction makes the truss support frame more stable under stress.

[0010] Preferably, square timber is installed on the truss plates arranged along the width direction of the box girder wing plate, and the square timber is placed along the width direction of the box girder wing plate, and the template for casting the concrete box girder is fixed on the square timber; the above structure facilitates the casting of the concrete box girder. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the cast-in-place box girder wing plate truss support frame of this utility model.

[0012] Figure 2 This is a schematic diagram of the truss plate structure of this utility model.

[0013] Figure 3 This is a structural diagram of the longitudinal connecting component and the swivel fastener of this utility model.

[0014] Figure 4 This is a schematic diagram of the actual application structure of the cast-in-place box girder wing plate truss support frame of this utility model.

[0015] The labels in the attached diagram are as follows: 1. Support rod; 2. Truss plate; 3. Longitudinal connection assembly; 4. Box girder flange; 5. U-shaped top support; 6. Swivel fastener; 7. Square timber; 8. Template; 9. Screw rod; 10. Washer; 11. Nut; 21. Channel steel outer frame; 22. Round steel stiffener; 23. Steel pipe; 24. Channel steel; 31. Round steel pipe. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings: as shown in the drawings Figures 1 to 4 As shown, this utility model includes a support rod 1, a truss plate 2, and a longitudinal connecting assembly 3; the support rod 1 has several rods, which are arranged sequentially along the length and width directions of the box girder wing plate 4. A U-shaped top support 5 is provided on the top of the support rod 1. The truss plate 2 rests on the U-shaped top support 5 and is arranged sequentially along the width direction of the box girder wing plate 4. The longitudinal connecting assembly 3 is inserted into several adjacent truss plates 2, and the longitudinal connecting assembly 3 is fixed to the truss plate 2 by a swivel fastener 6.

[0017] The truss plate 2 includes a channel steel outer frame 21 formed by four channel steels 24 and a round steel stiffener 22 composed of three steel pipes 23. The channel steels 24 are arranged to form the required channel steel outer frame 21 according to the structure of the box girder flange 4, and the slots of the channel steels 24 all face the same side. The round steel stiffener 22 is fixed inside the channel steel outer frame 21 by welding.

[0018] Three steel pipes 23 are connected in sequence. One steel pipe 23 is arranged vertically along the height direction of the channel steel outer frame 21, and the other two steel pipes 23 are arranged at an angle. One end of each steel pipe 23 is welded and fixed to the vertically arranged steel pipe 23, and the other end is welded and fixed to the corner of the channel steel outer frame 21. All three steel pipes 23 use Φ48.3mm standard steel pipes, which are not only easy to purchase, but also reusable, making them more economical and environmentally friendly.

[0019] The longitudinal connecting component 3 includes two round steel pipes 31, which are respectively inserted into several adjacent truss pieces 2 and fixed to two inclined steel pipes 23 by swivel fasteners 6.

[0020] Two round steel pipes 31 are fixed to two steel pipes 23 at an incline, and their incline direction is the same as that of the two steel pipes 23.

[0021] Square timber 7 is installed on the truss plate 2 arranged along the width direction of the box girder flange 4, and the square timber 7 is placed along the width direction of the box girder flange 4. The formwork 8 used for pouring concrete box girder is fixed on the square timber 7.

[0022] The application of this utility model in the construction of cast-in-place concrete box girders in the Second Ring Road Intelligent Expressway Reconstruction Project (Kezhu Expressway to S211 Provincial Highway Connection Line) - Section III (North Side of Dongsan Road - East Side of Genta East Road) is as follows: 1) Prefabricate truss pieces 2, including channel steel outer frame 21 and round steel stiffeners 22, in the factory; 2) Install the truss piece 2 onto the U-shaped top support 5; 3) Insert two round steel pipes 31 into the truss section 2; 4) Connect the round steel stiffener 22 and the round steel pipe 31 using the swivel fastener 6, and tighten with screws 9, washers 10, and nuts 11; 5) All truss pieces 2 are connected to the round steel stiffeners 22 and the round steel pipes 31 by swivel couplers 6 to form a truss support frame; 6) Install square timber 7 and formwork 8 on the outer frame 21 of the channel steel; 7) Cast concrete box girders.

[0023] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A quick-assembly, modularly adjustable cast-in-place box girder wing truss support frame, comprising support rods (1), truss plates (2), and longitudinal connecting components (3); characterized in that: The support rod (1) has several rods, which are arranged sequentially along the length and width of the box girder wing plate (4). The top of the support rod (1) is provided with a U-shaped top support (5). The truss plate (2) rests on the U-shaped top support (5) and is arranged sequentially along the width of the box girder wing plate (4). The longitudinal connecting component (3) is inserted into several adjacent truss plates (2). The longitudinal connecting component (3) and the truss plate (2) are fixed together by a swivel fastener (6).

2. The quick-assembly modular adjustable cast-in-place box girder wing truss support frame according to claim 1, characterized in that: The truss plate (2) includes a channel steel outer frame (21) formed by four channel steels (24) and a round steel stiffener (22) composed of three steel pipes (23). The channel steels (24) are arranged to form the required channel steel outer frame (21) according to the structure of the box girder wing plate (4), and the slots of the channel steels (24) all face the same side. The round steel stiffener (22) is fixed inside the channel steel outer frame (21) by welding.

3. The quick-assembly modular adjustable cast-in-place box girder wing truss support frame according to claim 2, characterized in that: The three steel pipes (23) are connected in sequence. One of the steel pipes (23) is arranged vertically along the height direction of the channel steel frame (21), and the other two steel pipes (23) are arranged at an angle. One end of each steel pipe (23) is welded and fixed to the vertically arranged steel pipe (23), and the other end is welded and fixed to the corner of the channel steel frame (21).

4. The quick-assembly modular adjustable cast-in-place box girder wing truss support frame according to claim 3, characterized in that: The longitudinal connecting assembly (3) includes two round steel pipes (31), which are respectively inserted into several adjacent truss pieces (2) and fixed to two inclined steel pipes (23) by swivel fasteners (6).

5. The quick-assembly modular adjustable cast-in-place box girder wing truss support frame according to claim 4, characterized in that: The two round steel pipes (31) are fixed on the two steel pipes (23) in an inclined manner, and their inclination direction is the same as that of the two steel pipes (23).

6. The quick-assembly modular adjustable cast-in-place box girder wing truss support frame according to claim 1, characterized in that: A square timber (7) is installed on the truss piece (2) arranged along the width direction of the box girder wing plate (4), and the square timber (7) is placed along the width direction of the box girder wing plate (4), and the template (8) for pouring concrete box girder is fixed on the square timber (7).

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