Split combined type steel box girder

Abstract

The utility model discloses a split combined type steel box girder, and relates to the technical field of bridge engineering. Comprising a top plate, multiple top plate U ribs are arranged at the bottom end of the top plate, webs are installed on the left side and the right side of the bottom end of the top plate, a bottom plate is installed at the bottom ends of the webs, and multiple transverse partition plates are installed between the bottom plate and the top plate; and the reinforcing mechanism is arranged between the transverse partition plates and used for reinforcing the transverse partition plates, and the situation that the transverse partition plates shake, and consequently deviation of the top plate is affected is avoided. The U-shaped sleeve is mounted on the mounting block on the surface of the diaphragm plate through the fixing bolt and can be matched with the supporting stiffening rib to fix the diaphragm plate, and the length of the screw rod in the cylinder can be adjusted by adjusting the position of the locking nut, so that different distances between the diaphragm plates can be adapted, and the working efficiency is improved. U-shaped grooves in the upper end and the lower end of the transverse partition plate and connecting and guiding grooves in the left end and the right end of the transverse partition plate are matched with the top plate U rib, the bottom plate U rib and the transverse plate on the web correspondingly, assembling is facilitated, and follow-up welding work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and particularly relates to a split combined steel box girder. Background Technique

[0002] The steel box girder, also known as the steel plate box girder, is a common structural form for long-span bridges. It is generally used for bridges with larger spans. Because its appearance is like a box, it is called a steel box girder. The box girders of reinforced concrete structures are divided into precast box girders and cast-in-situ box girders. The precast box girders prefabricated in an independent site can be erected after the lower works are completed in combination with a bridge erection machine, which can accelerate the project progress and save the construction period; the cast-in-situ box girders are mostly used for large continuous bridges. Commonly classified by materials, there are mainly two types, one is the prestressed reinforced concrete box girder, and the other is the steel box girder. Among them, the prestressed reinforced concrete box girder is constructed on site. In addition to longitudinal prestress, some also set transverse prestress; the steel box girder is generally processed in the factory and then transported to the site for installation. It has a full steel structure or a partial reinforced concrete paving layer.

[0003] During the assembly process of the steel box girder, it is necessary to determine the welding positions of each plate. After the positions are determined, it is necessary for personnel to assist in fixing the plates or other components to assist in supporting to ensure that the plates do not shift during welding, which reduces the work efficiency. The multiple plates need to be assembled and welded one by one, and improvement is needed. For this reason, we propose a new type of split combined steel box girder. Content of the Utility Model

[0004] The purpose of the utility model is to provide a split combined steel box girder to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A split combined steel box girder, comprising:

[0006] A top plate, multiple top plate U-stiffeners are arranged at the bottom end of the top plate, webs are installed on the left and right sides at the bottom end of the top plate, a bottom plate is installed at the bottom end of the web, and multiple diaphragms are installed between the bottom plate and the top plate;

[0007] A reinforcement mechanism, which is arranged between the diaphragms and is used to reinforce between the diaphragms to prevent the diaphragms from shaking, thereby affecting the offset of the top plate.

[0008] The reinforcement mechanism includes:

[0009] Mounting blocks installed on one side of the diaphragm, U-shaped sleeves are installed on the outer walls of the mounting blocks through fixing bolts, one end of the U-shaped sleeve is fixedly installed with a screw rod, the screw rods are connected by a cylindrical barrel, and one end of the screw rod is immersed in the inner side of the cylindrical barrel. Locking nuts are installed on the outer walls of the screw rods, and the locking nuts are located at both ends of the cylindrical barrel.

[0010] As a specific solution in the technical solution of the present application, the web is designed as an inverted T-shape, and convex grooves are provided at the left and right ends of the bottom plate, and the bottom end of the web is embedded in the convex groove.

[0011] As a specific solution in the technical solution of the present application, a plurality of transverse partitions are arranged between the top plate and the bottom plate, and supporting stiffening ribs are symmetrically arranged on the outer sides of the transverse partitions at both ends, and the supporting stiffening ribs are resting between the top plate and the bottom plate. Transverse stiffening ribs are installed on one side of the supporting stiffening ribs, and the transverse stiffening ribs are resting on the inner side of the web. A square hole is arranged in the middle of the transverse partition.

[0012] As a specific solution in the technical solution of the present application, a plurality of top plate U-ribs are arranged at the bottom end of the top plate, a plurality of bottom plate U-ribs are arranged at the top end of the bottom plate, corresponding U-shaped grooves are arranged at the upper and lower ends of the cross partition, the top plate U-ribs and the bottom plate U-ribs are located on the inner side of the U-shaped grooves, a plurality of cantilever beams are fixedly installed on the outer side of the web plate, and a U-shaped groove matching the top plate U-ribs extending out of the outer side of the web plate is arranged at the top end of the cantilever beam.

[0013] As a specific solution in the technical solution of this application, multiple transverse plates are arranged on the inner side of the web, matching connecting grooves are arranged on the left and right sides of the transverse partition, the transverse partition is located on the inner side of the connecting groove, and the transverse stiffening rib is located at the top of one of the transverse plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The split combined steel box girder is installed on the mounting block on the surface of the diaphragm by fixing bolts, and can cooperate with the supporting stiffening ribs to fix the diaphragm. The length of the screw in the cylinder can be adjusted by adjusting the position of the locking nut, so as to adapt to different distances between the diaphragms.

[0016] At the same time, by setting U-shaped grooves on the upper and lower ends of the cross partition and the connecting grooves on the left and right ends, which are respectively matched with the top plate U ribs, the bottom plate U ribs and the cross plates on the web, they can be clamped and limited to each other, so that the device is in a stable state, easy to assemble, and convenient for subsequent welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric schematic diagram of the utility model;

[0018] Figure 2 It is an isometric side cross-sectional schematic diagram of the utility model;

[0019] Figure 3 It is an isometric internal schematic diagram of the utility model;

[0020] Figure 4 It is a schematic diagram of the reinforcement mechanism of the utility model.

[0021] In the figure: 1. top plate; 2. web plate; 3. reinforcement mechanism; 4. bottom plate; 5. bottom plate U-rib; 6. cross plate; 7. cross partition; 8. supporting stiffening rib; 9. transverse stiffening rib; 10. cantilever beam; 11. convex groove; 12. top plate U-rib; 13. U-shaped groove; 14. connecting groove; 301. U-shaped sleeve; 302. screw; 303. cylindrical tube; 304. locking nut; 305. fixing bolt; 306. mounting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the process of bridge construction, steel box girders are needed. The steel box girders provided by the utility model are specially used for steel box girder assembly operations in bridge construction. In the process of using this equipment for construction operations, it is necessary to determine the construction drawings and design requirements in advance, understand the specifications, dimensions and installation positions of the steel box girders, ensure that all required steel box girder materials are in place, including main beams, cross beams, connectors, bolts, etc., ensure that the tools used are intact and suitable for work, such as wrenches, electric drills, welding equipment, etc., set up warning signs and safety protection facilities at the construction site, such as safety helmets, safety belts, etc., ensure that the connection and fixation of the steel box girder meet the specifications, and take necessary quality control measures, so as to effectively carry out steel box girder construction operations, ensure construction quality and safety, and improve work efficiency and controllability of the construction process.

[0024] like Figures 1 - 4 As shown, the utility model provides a technical solution: a split combined steel box girder, comprising:

[0025] A top plate 1, wherein a plurality of top plate U ribs 12 are arranged at the bottom end of the top plate 1, a web plate 2 is installed on the left and right sides of the bottom end of the top plate 1, a bottom plate 4 is installed at the bottom end of the web plate 2, and a plurality of transverse partitions 7 are installed between the bottom plate 4 and the top plate 1;

[0026] The reinforcement mechanism 3 is arranged between the transverse partitions 7 and is used to reinforce the transverse partitions 7 to prevent the transverse partitions 7 from shaking, thereby affecting the displacement of the top plate 1.

[0027] The reinforcement mechanism 3 comprises:

[0028] A mounting block 306 is installed on one side of the diaphragm 7, and a U-shaped sleeve 301 is installed on the outer wall of the mounting block 306 through a fixing bolt 305. A screw rod 302 is fixedly installed at one end of the U-shaped sleeve 301. The screw rods 302 are connected by a cylindrical tube 303, and one end of the screw rod 302 is immersed in the inner side of the cylindrical tube 303. A locking nut 304 is installed on the outer wall of the screw rod 302, and the locking nut 304 is located at both ends of the cylindrical tube 303.

[0029] like Figure 4 As shown, it should be noted that: by putting the locking nut 304 on the screw rod 302, the length of the screw rod 302 in the cylindrical tube 303 can be adjusted to adapt to the different distances between the two sets of diaphragms 7, and then the U-shaped sleeve 301 is fixed to the mounting block 306 by using the fixing bolt 305, so as to support the diaphragms 7. Because the diaphragms 7 are not provided with screw holes for fixing the bolts 305 between the top plate 1 and the bottom plate 4, the complicated operation of drilling holes is avoided. In order to prevent the bottom end of the diaphragm 7 from being offset on the bottom plate 4 when the top plate 1 is subjected to pressure, a reinforcement mechanism 3 is designed to fix the installation of the diaphragm 7. The outermost end of the diaphragm 7 is provided with a supporting stiffening rib 8. Under the action of the reinforcement mechanism 3, the diaphragms 7 can be fixed on the bottom plate 4 under the action of force without moving.

[0030] The web 2 is designed in an inverted T shape. The left and right ends of the bottom plate 4 are provided with convex grooves 11 , and the bottom end of the web 2 is embedded in the convex grooves 11 .

[0031] A plurality of transverse partitions 7 are arranged between the top plate 1 and the bottom plate 4. Support stiffening ribs 8 are symmetrically arranged on the outer sides of the transverse partitions 7 at both ends. The support stiffening ribs 8 are pressed between the top plate 1 and the bottom plate 4. A transverse stiffening rib 9 is installed on one side of the support stiffening rib 8. The transverse stiffening rib 9 is pressed against the inner side of the web 2. A square hole is arranged in the middle of the transverse partition 7.

[0032] A plurality of top plate U ribs 12 are arranged at the bottom end of the top plate 1, a plurality of bottom plate U ribs 5 are arranged at the top end of the bottom plate 4, corresponding U-shaped grooves 13 are arranged at the upper and lower ends of the cross partition 7, the top plate U ribs 12 and the bottom plate U ribs 5 are located on the inner side of the U-shaped grooves 13, a plurality of cantilever beams 10 are fixedly installed on the outer side of the web plate 2, and a U-shaped groove 13 matching the top plate U ribs 12 extending out of the outer side of the web plate 2 is arranged at the top end of the cantilever beam 10.

[0033] A plurality of transverse plates 6 are arranged on the inner side of the web 2 , matching guide grooves 14 are arranged on the left and right sides of the transverse partition 7 , the transverse partition 7 is located inside the guide groove 14 , and the transverse stiffening rib 9 is located at the top end of one of the transverse plates 6 .

[0034] like Figure 1As shown, it should be noted that: place the bottom plate 4 on the workbench, insert the bottom ends of the webs 2 on both sides into the inner side of the convex grooves 11, push the webs 2 forward to align the webs 2 with one end of the bottom plate 4, at this time the webs 2 are in the shaking stage, but their position will not be offset, install the diaphragm 7, the U-shaped groove 13 at the bottom end of the diaphragm 7 and the guide grooves 14 on the left and right sides respectively cooperate with the cross plate 6 and the bottom plate U rib 5, and they are mutually engaged to limit the position, adjust the distance between the diaphragms 7, and install the reinforcement mechanism 3, After the reinforcement mechanism 3 is installed, supporting stiffening ribs 8 and transverse stiffening ribs 9 are installed on the diaphragms 7 at both ends to prevent the diaphragms 7 on both sides from being offset. At this time, the device is in a stable state under the restraint between each other, and the cantilever beams 10 are fixed on both sides of the web 2 by bolts. After the cantilever beams 10 are installed, the top plate U ribs 12 on the top plate 1 cooperate with the U-shaped grooves 13 on the diaphragms 7 and the cantilever beams 10 to be clamped and fixed. After the installation of the top plate 1 is completed, its bottom end is welded to the supporting stiffening ribs 8 at both ends to ensure stable support of the device.

[0035] To summarize, a split modular steel box girder installs a U-shaped sleeve 301 on a mounting block 306 on the surface of a diaphragm 7 by means of fixing bolts 305, and can cooperate with the supporting stiffening ribs 8 to fix the diaphragm 7. Adjusting the position of the locking nut 304 can adjust the length of the screw 302 in the cylindrical tube 303, so as to adapt to different distances between the diaphragms 7. At the same time, by setting U-shaped grooves 13 at the upper and lower ends of the diaphragm 7 and guiding grooves 14 at the left and right ends, they respectively cooperate with the top plate U ribs 12, the bottom plate U ribs 5 and the cross plate 6 on the web 2, and can be clamped and limited with each other, so that the device is in a stable state, which is convenient for assembly and subsequent welding work.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A split composite steel box girder, characterized in that: include: A top plate (1), wherein a plurality of top plate U ribs (12) are arranged at the bottom end of the top plate (1), a web plate (2) is installed on the left and right sides of the bottom end of the top plate (1), a bottom plate (4) is installed at the bottom end of the web plate (2), and a plurality of transverse partition plates (7) are installed between the bottom plate (4) and the top plate (1); The reinforcement mechanism (3) is arranged between the transverse partitions (7) and is used to reinforce the transverse partitions (7) to prevent the transverse partitions (7) from shaking, thereby affecting the displacement of the top plate (1); The reinforcement mechanism (3) comprises: A mounting block (306) is mounted on one side of the diaphragm (7), and a U-shaped sleeve (301) is mounted on the outer wall of the mounting block (306) via a fixing bolt (305). A screw rod (302) is fixedly mounted on one end of the U-shaped sleeve (301). The screw rods (302) are connected to each other via a cylindrical tube (303), and one end of the screw rod (302) is immersed in the inner side of the cylindrical tube (303). A locking nut (304) is mounted on the outer wall of the screw rod (302), and the locking nut (304) is located at both ends of the cylindrical tube (303).

2. The split composite steel box girder according to claim 1, characterized in that: The web (2) is of an inverted T-shaped design, and convex grooves (11) are provided at the left and right ends of the bottom plate (4), and the bottom end of the web (2) is embedded in the convex groove (11).

3. The split composite steel box girder according to claim 1, characterized in that: A plurality of transverse partitions (7) are arranged between the top plate (1) and the bottom plate (4); support stiffening ribs (8) are symmetrically arranged on the outer sides of the transverse partitions (7) at both ends; the support stiffening ribs (8) are abutted between the top plate (1) and the bottom plate (4); a transverse stiffening rib (9) is installed on one side of the support stiffening rib (8); the transverse stiffening rib (9) abuts against the inner side of the web (2); a square hole is arranged in the middle of the transverse partition (7).

4. The split composite steel box girder according to claim 3, characterized in that: The top plate (1) is provided with a plurality of top plate U-ribs (12) at the bottom end, the bottom plate (4) is provided with a plurality of bottom plate U-ribs (5) at the top end, the cross partition (7) is provided with corresponding U-shaped grooves (13) at the upper and lower ends, the top plate U-ribs (12) and the bottom plate U-ribs (5) are located inside the U-shaped grooves (13), a plurality of cantilever beams (10) are fixedly installed outside the web plate (2), and a U-shaped groove (13) matching with the top plate U-ribs (12) extending out of the outside of the web plate (2) is provided at the top end of the cantilever beam (10).

5. The split composite steel box girder according to claim 4, characterized in that: A plurality of transverse plates (6) are arranged on the inner side of the web (2), matching guide grooves (14) are arranged on the left and right sides of the transverse partition (7), the transverse partition (7) is located on the inner side of the guide groove (14), and the transverse stiffening rib (9) is located at the top end of one of the transverse plates (6).

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