Connecting structure of spandrel girder

Abstract

The connecting structure of the bearing beam comprises box type beams or I-shaped beams, the box type beams or the I-shaped beams comprise webs and wing plates fixedly connected to the upper ends and the lower ends of the webs respectively, the connecting structure further comprises two pieces of C-shaped steel used for connecting the two box type beams or the two I-shaped beams, the number of the C-shaped steel is two, and the two pieces of C-shaped steel are arranged on the two sides of the webs of the two box type beams or the two I-shaped beams respectively. The two pieces of C-shaped steel are arranged in a back-to-back mode, the bottom faces of the C-shaped steel are tightly attached to the web, a plurality of first open holes are formed in the web, a plurality of second open holes are formed in the bottom faces of the C-shaped steel, the first open holes correspond to the second open holes, and the bolts are arranged in the first open holes and the second open holes and are in threaded connection with the nuts so that the two box beams or the two I-shaped beams can be fixed in a butt joint mode.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, and in particular to the connection structure of load-bearing beams. Background Technology

[0002] Box girders or I-beams can be used as load-bearing beams. Currently, due to limitations in raw materials and transportation dimensions, the longest single box girder or I-beam can only be 12 meters. However, with the development of the bridge industry, a large number of bridge support projects with a transverse width greater than 12 meters have emerged. In this case, the original length of the box girders or I-beams cannot meet the requirements of such projects, and longitudinal extension of the box girders or I-beams is required.

[0003] In the existing technology, the connection between adjacent load-bearing beams is achieved by high-altitude welding or bolt connection. The existing technology has the following problems: high-altitude welding has a high risk factor, and the weld seam needs to be cut when dismantling after use, which has a high risk factor and a large material loss; when bolt connection is used, the joint of the load-bearing beam cannot achieve an equal strength connection, and the bolt will bulge on the surface of the load-bearing beam flange. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a connection structure with equal strength at the joint of adjacent load-bearing beams and no protrusions on the surface of the wing plate.

[0005] The technical solution adopted in this utility model is the connection structure of the load-bearing beam, including a box beam or an I-beam. The box beam or I-beam includes a web, flanges fixedly connected to the upper and lower ends of the web, and C-shaped steel for connecting two box beams or two I-beams. There are two C-shaped steels, which are respectively arranged on both sides of the web of the two box beams or two I-beams. The two C-shaped steels are arranged back to back, and the bottom surface of the C-shaped steel is close to the web. The web has multiple first openings, and the bottom surface of the C-shaped steel has multiple second openings. The first openings and second openings correspond to each other. Bolts are set in the first openings and second openings and threadedly connected to nuts to fix the two box beams or two I-beams together.

[0006] The box girder or I-beam described in this utility model is made of integrally formed steel or welded together.

[0007] This utility model provides a support plate between the two wing plates. The upper and lower ends of the support plate are respectively fixedly connected to the wing plate or a first connecting plate fixedly connected to the wing plate. The support plate is set perpendicular to the web plate.

[0008] The present invention provides a reinforcing plate between the two wing plates. The upper and lower ends of the reinforcing plate are respectively fixedly connected to the wing plate or a first connecting plate fixedly connected to the wing plate. The reinforcing plate is arranged along the length direction of the web plate.

[0009] The reinforcing plate of this utility model includes a plate, the two ends of which are bent to form a bent portion, and the bending is towards the belly direction.

[0010] The side of the C-shaped steel of this utility model is in contact with the flange.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] Compared to existing technologies where high-altitude welding of load-bearing beams poses a significant risk, and where bolted connections at joints cannot achieve equal strength and ensure bolt-free surfaces at flange connections, this invention utilizes C-shaped steel sections on both sides of the webs of two load-bearing beams. These C-shaped steel sections are positioned back-to-back, with their bottom surfaces tightly abutting the webs, and are then bolted together to connect adjacent load-bearing beams. The C-shaped steel design strengthens the connection joints, ensuring equal strength. Furthermore, the C-shaped steel sections on the webs eliminate protrusions on the outer surfaces of the flanges after connection, guaranteeing flatness and facilitating lateral dismantling of the load-bearing beams after construction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model in a disassembled state. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and through embodiments.

[0016] like Figures 1 to 2As shown, the load-bearing beam connection structure described in this embodiment includes a box girder or I-beam 1. The box girder or I-beam 1 includes a web 2, flanges 3 fixedly connected to the upper and lower ends of the web 2, and C-shaped steel 4 for connecting two box girder or two I-beam 1. There are two C-shaped steel 4, which are respectively arranged on both sides of the web 2 of the two box girder or two I-beam 1. The two C-shaped steel 4 are arranged back to back, and the bottom surface of the C-shaped steel 4 is in close contact with the web 2. The web 2 has multiple first openings 21, and the bottom surface of the C-shaped steel 4 has multiple second openings 41. The first openings 21 and the second openings 41 correspond to each other. Bolts 5 are provided in the first openings 21 and the second openings 41. The two box beams or two I-beams 1 are connected and fixed together by threaded nuts; the side of the C-shaped steel 4 is in contact with the flange 3; this utility model has C-shaped steel 4 located on both sides of the web 2 of the two load-bearing beams. The C-shaped steel 4 is set back to back and the bottom surface of the C-shaped steel 4 is close to the web 2. The C-shaped steel 4 and the web 2 are fixedly connected by bolts 5, thereby realizing the connection of adjacent load-bearing beams. The design of the C-shaped steel 4 strengthens the strength of the connection node of the two load-bearing beams, so that the load-bearing beams are connected with equal strength after connection; the C-shaped steel 4 is located on the web 2 so that there is no protrusion on the outer surface of the flange 3 after the two load-bearing beams are connected, ensuring the flatness of the load-bearing beams after connection, and facilitating the lateral movement and dismantling of the load-bearing beams after construction.

[0017] The box girder or I-beam 1 described in this embodiment is made of integrally formed steel or welded together; the integrally formed steel or welded box girder or I-beam 1 increases the strength of the box girder or I-beam 1 and reduces the occurrence of breakage at the splice.

[0018] In this embodiment, a support plate 6 is provided between the two wing plates 3. The upper and lower ends of the support plate 6 are respectively fixedly connected to the wing plate 3 or the first connecting plate 7 fixedly connected to the wing plate 3. Depending on the location of the support plate 6, the upper and lower ends of the support plate 6 are fixedly connected to the wing plate 3 or the upper and lower ends of the support plate 6 are fixedly connected to the first connecting plate 7. The support plate 6 is set perpendicular to the web plate 2. The support plate 8 can increase the shear resistance of the box beam or I-beam 1.

[0019] In this embodiment, a reinforcing plate 8 is provided between the two flanges 3. The upper and lower ends of the reinforcing plate 8 are respectively fixedly connected to the flange 3 or the first connecting plate 7 fixedly connected to the flange 3. Depending on the location of the reinforcing plate 8, the upper and lower ends of the reinforcing plate 8 are respectively fixedly connected to the flange 3, or the upper and lower ends of the reinforcing plate 8 are respectively fixedly connected to the first connecting plate 7. The reinforcing plate 8 is arranged along the length direction of the web plate 2. The reinforcing plate 8 includes a plate 81, and the two ends of the plate 81 are bent to form a bent portion 82. The bending is towards the web. The function of the reinforcing plate 8 is to increase the strength of the flange 3 of the box girder or I-beam 1.

Claims

1. A connecting structure of a load-bearing beam, comprising a box beam or an I-beam (1) including a web (2) and flanges (3) fixedly connected to the upper and lower ends of the web (2) respectively, characterized in that, The application further comprises C-shaped steel (4) for connecting two box beams or I-beams (1), the C-shaped steel (4) is two, the two C-shaped steels (4) are respectively arranged on the two sides of the web (2) of the two box beams or I-beams (1), the two C-shaped steels (4) are arranged back to back, the bottom surface of the C-shaped steel (4) is close to the web (2), the web (2) is provided with a plurality of first openings (21), the bottom surface of the C-shaped steel (4) is provided with a plurality of second openings (41), the first openings (21) and the second openings (41) are corresponding, the bolts (5) are arranged in the first openings (21) and the second openings (41) and are threadedly connected with the nuts so as to butt joint and fix the two box beams or I-beams (1).

2. The load bearing beam connection structure of claim 1, wherein The box beam or I-beam (1) is integrally formed steel or welded.

3. The load bearing beam connection of claim 1, wherein, The support plate (6) is arranged between the two wing plates (3), the upper and lower ends of the support plate (6) are respectively fixedly connected with the wing plates (3) or the first connecting plates (7) fixedly connected with the wing plates (3), and the support plate (6) is arranged perpendicularly to the web (2).

4. The load bearing beam connection of claim 1, wherein, The reinforcing plate (8) is arranged between the two wing plates (3), the upper and lower ends of the reinforcing plate (8) are respectively fixedly connected with the wing plates (3) or the first connecting plates (7) fixedly connected with the wing plates (3), and the reinforcing plate (8) is arranged along the length direction of the web (2).

5. The load bearing beam connection of claim 4, wherein, The reinforcing plate (8) comprises a plate material (81), the two ends of the plate material (81) are bent to form bending portions (82), and the bending is towards the web direction.

6. The load bearing beam connection of claim 1, wherein, The side surface of the C-shaped steel (4) is in contact with the wing plate (3).

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