Steel box girder

Abstract

The utility model relates to the technical field of steel box girders, in particular to a steel box girder, which is characterized in that the structural stability of a steel box girder body is improved through a supporting structure, the adjacent steel box girders can be conveniently and quickly positioned and connected through a connecting structure, and the stability and the practicability of the device are improved; comprising a supporting structure and a connecting structure, and the connecting structure is installed on the supporting structure.

Description

Technical Field

[0001] The utility model relates to the technical field of steel box beams, in particular to a steel box beam. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a common structural form for large-span bridges. It is generally used on bridges with larger spans and is called a steel box girder because of its box-like appearance. Steel box girders are made of steel and have excellent strength and rigidity. They can withstand large loads and deformations, providing stable and reliable structural support for bridges. Compared with traditional concrete box girders, steel box girders have a lighter deadweight, which makes construction and transportation more convenient, reduces the requirements for bridge foundations, and reduces the complexity of on-site construction.

[0003] The Chinese utility model patent with application number CN202320710274.4 in the prior art involves a steel box girder, including a steel box girder body, a hanging block, a connecting end, an installation groove, a rotating shaft and an elastic member, etc., which can simultaneously realize the lifting and positioning functions, has a simple structure, does not need to be removed after installation, and has low installation operation volume and cost.

[0004] However, the above-mentioned device needs to be hoisted and aligned during the actual installation process. The above-mentioned steel box girder structure requires a certain stability during the hoisting process. Its positioning difficulty is easily affected by the external environment, and the through-hole docking is difficult and time-consuming. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a steel box girder which improves the structural stability of the steel box girder body through a supporting structure, facilitates rapid positioning and connection between adjacent steel box girders through a connecting structure, and improves the stability and practicality of the device.

[0006] The utility model discloses a steel box girder, comprising a supporting structure and a connecting structure, wherein the connecting structure is installed on the supporting structure. The supporting structure improves the structural stability of the steel box girder body, and the connecting structure facilitates rapid positioning and connection between adjacent steel box girders, thereby improving the stability and practicality of the device.

[0007] Preferably, the supporting structure includes a top plate, side plates, a bottom plate, a web plate and a connecting partition plate. The left and right end surfaces of the top plate are connected to the upper end surface of the bottom plate through a group of side plates respectively. Both groups of side plates are installed at an angle. Multiple groups of web plates and connecting partition plates are vertically installed between the bottom plate and the top plate, and the web plates and connecting partition plates are installed alternately. The structure between the top plate and the bottom plate is supported by the multiple groups of web plates and connecting partition plates, thereby improving the overall stability of the steel box girder.

[0008] Preferably, the connecting structure includes threaded holes, connecting seats, adjusting bolts and adjusting nuts. A plurality of groups of threaded holes are respectively arranged on the upper end surface of the top plate on the left and right sides. The lower end surface of the connecting seat is connected to the threaded holes by bolts. Adjusting bolts are connected between the connecting seats at corresponding positions on two adjacent groups of steel box girders. Adjusting nuts are installed on the outer areas of the two groups of connecting seats of the adjusting bolts. The gap between adjacent top plates can be quickly adjusted by rotating the adjusting nuts. After the welding and fixation between the adjacent top plates is completed, the connecting seat can be removed and reused, thereby improving the practicality of the device.

[0009] Preferably, it also includes multiple groups of circular through holes, which are arranged on the sides of the web and the connecting partitions. By arranging multiple groups of circular through holes on the sides of the web and the connecting partitions, the dead weight of the steel box girder body can be reduced, and at the same time, internal inspection and maintenance and the passage of cables are facilitated, thereby improving the practicality of the structure.

[0010] Preferably, it also includes multiple groups of reinforcing plates, which are arranged on the lower end surface of the top plate, the inner side surfaces of the two groups of side plates and the upper end surface of the bottom plate; by arranging multiple groups of reinforcing plates on the top plate, the side plate and the bottom plate, the self-compressive strength of the top plate, the side plate and the bottom plate is increased, thereby improving the practical life and stability of the structure.

[0011] Preferably, it also includes a strapping plate and a bearing platform, one side of the top plate protrudes outward relative to the side of the side plate to form a strapping plate, and the other side of the top plate shrinks toward the middle of the side plate relative to the other side of the side plate to form a bearing platform on the upper end surface of the side plate; the strapping plate and the bearing platform facilitate the rapid erection of adjacent steel box girders, so as to facilitate the rapid installation and connection of the connecting structure, reduce the impact of the external environment such as strong winds on the installation process of the steel box girders, and improve the practicability and stability of the structure.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the structural stability of the steel box girder body is improved through the supporting structure, and the adjacent steel box girders are quickly positioned and connected through the connecting structure, thereby improving the stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0014] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 4 It is a side view structural schematic diagram of the utility model;

[0017] Markings in the attached drawings: 1. top plate; 2. side plate; 3. bottom plate; 4. web plate; 5. connecting partition; 6. threaded hole; 7. connecting seat; 8. adjusting bolt; 9. adjusting nut; 10. reinforcing plate; 11. circular through hole; 12. strapping plate; 13. bearing platform. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The connecting structure shown is mounted on a supporting structure;

[0021] First, when the steel box beams are hoisted and installed in sequence, they are first placed through their own slats 12 and the bearing platform 13 structure, so that the slats 12 on the unfixed steel box beam are placed on the bearing platform 13 of the fixed steel box beam, and then the connecting seat 7 is fixed to the threaded holes 6 at the adjacent parts of the two groups of adjacent steel box beams through the bolts at the lower part of the connecting seat 7, and the adjusting bolts 8 are connected to the two groups of connecting seats 7, and then the position between the two groups of steel box beams is adjusted by rotating the adjusting nuts 9, and finally the adjacent steel box beams are welded;

[0022] The supporting structure includes a top plate 1, side plates 2, a bottom plate 3, a web plate 4 and a connecting partition plate 5. The left and right end surfaces of the top plate 1 are connected to the upper end surface of the bottom plate 3 through a set of side plates 2 respectively. Both sets of side plates 2 are installed obliquely. Multiple sets of web plates 4 and connecting partition plates 5 are vertically installed between the bottom plate 3 and the top plate 1. The web plates 4 and connecting partition plates 5 are installed alternately.

[0023] The connection structure includes threaded holes 6, a connection seat 7, an adjusting bolt 8 and an adjusting nut 9. A plurality of groups of threaded holes 6 are respectively arranged on the upper end surface of the top plate 1, and the lower end surface of the connection seat 7 is connected to the threaded holes 6 by bolts. An adjusting bolt 8 is connected between the connection seats 7 at corresponding positions on two adjacent groups of steel box girders, and an adjusting nut 9 is installed on the outer area of ​​the two groups of connection seats 7 of the adjusting bolt 8.

[0024] It also includes a plurality of groups of reinforcing plates 10, and a plurality of groups of circular through holes 11 are provided on the sides of the web 4 and the connecting partition 5;

[0025] It also includes a plurality of groups of circular through holes 11, which are arranged on the lower end surface of the top plate 1, the inner side surfaces of the two groups of side plates 2 and the upper end surface of the bottom plate 3;

[0026] It also includes a strap 12 and a bearing platform 13. One side of the top plate 1 protrudes outward relative to the side of the side plate 2 to form the strap 12. The other side of the top plate 1 is relative to the other side of the side plate 2 and shrinks toward the middle of the side plate 2 so that the upper end surface of the side plate 2 forms the bearing platform 13.

[0027] First, when the steel box girders are hoisted and installed in sequence, they are first placed through their own bridging plates 12 and bearing platforms 13 structures, so that the bridging plates 12 on the unfixed steel box girders are placed on the bearing platforms 13 of the fixed steel box girders, and then the connecting seats 7 are fixed to the threaded holes 6 at adjacent positions of the two groups of adjacent steel box girders through the bolts at the lower part of the connecting seats 7, and the adjusting bolts 8 are connected to the two groups of connecting seats 7, and then the position between the two groups of steel box girders is adjusted by rotating the adjusting nuts 9, and finally the adjacent steel box girders can be welded.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A steel box girder; characterized in that, The invention comprises a supporting structure and a connecting structure, wherein the connecting structure is installed on the supporting structure; the supporting structure comprises a top plate (1), a side plate (2), a bottom plate (3), a web plate (4) and a connecting partition plate (5); the left and right end surfaces of the top plate (1) are connected to the upper end surface of the bottom plate (3) through a group of side plates (2), the two groups of side plates (2) are both installed at an angle; a plurality of groups of web plates (4) and connecting partition plates (5) are vertically installed between the bottom plate (3) and the top plate (1); the web plates (4) and the connecting partition plates (5) are installed in a staggered manner; the connecting structure comprises a threaded hole (6), a connecting seat (7), an adjusting bolt (8) and an adjusting nut (9); a plurality of groups of threaded holes (6) are respectively arranged on the left and right upper end surface of the top plate (1); the lower end surface of the connecting seat (7) is connected to the threaded hole (6) through a bolt; an adjusting bolt (8) is connected between the connecting seats (7) at corresponding positions on two adjacent groups of steel box beams; an adjusting nut (9) is installed on the outer area of ​​the adjusting bolt (8) located between the two groups of connecting seats (7).

2. A steel box girder according to claim 1, characterized in that: It also comprises a plurality of groups of circular through holes (11), and the plurality of groups of circular through holes (11) are arranged on the side surfaces of the web (4) and the connecting partition (5).

3. A steel box girder according to claim 1, characterized in that: It also includes a plurality of groups of reinforcing plates (10), which are arranged on the lower end surface of the top plate (1), the inner side surfaces of the two groups of side plates (2) and the upper end surface of the bottom plate (3).

4. A steel box girder according to claim 1, characterized in that: It also comprises a strapping plate (12) and a bearing platform (13), wherein one side of the top plate (1) protrudes outward relative to the side surface of the side plate (2) to form the strapping plate (12), and the other side of the top plate (1) contracts relative to the other side surface of the side plate (2) toward the middle of the side plate (2) so that the upper end surface of the side plate (2) forms the bearing platform (13).

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