High-toughness steel box girder bridge

Abstract

The utility model belongs to the technical field of steel box girder bridges, and particularly relates to a high-toughness steel box girder bridge which comprises a top beam, the lower end of the top beam is fixedly connected with a steel box, the interior of the steel box is fixedly connected with a plurality of reinforcing ribs, the upper ends of the reinforcing ribs are fixedly connected with upper reinforcing blocks, and the lower ends of the reinforcing ribs are fixedly connected with lower reinforcing blocks. The upper end of the upper reinforcing block is fixedly connected to the lower end of the top beam, the lower end of the lower reinforcing block is fixedly connected to the lower end of the interior of the steel box, a lifting mechanism is arranged at the lower end of the top beam, the top beam is provided with an assembling mechanism, and inclined ribs are fixedly connected to the left side and the right side of the lower end of the top beam correspondingly. The top base is fixedly connected to the lower end of the top beam and the lower end of the steel box, the top base plays a role in wrapping and hanging connection of the top beam and the steel box, the left side and the right side of the upper end of the top base are fixedly connected with external hanging devices respectively, therefore, the hanging connection effect is achieved at the upper end of the top beam, supporting installation devices installed on the ground are reduced, and the use area of the ground is increased.

Description

Technical Field

[0001] This utility model relates to the field of steel box girder bridge technology, specifically a high-toughness steel box girder bridge. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans and are called steel box girders because their shape resembles a box. A steel box girder is typically constructed by welding together a top plate, bottom plate, web, transverse diaphragms, longitudinal diaphragms, and stiffening ribs. The top plate is an orthotropic bridge deck composed of a cover plate and longitudinal stiffening ribs.

[0003] A steel box girder, as proposed in patent authorization announcement number CN112359701B, includes a bottom splice plate, a web splice plate, a central diaphragm, and a top splice plate. The web splice plate has multiple L-shaped stiffening ribs distributed longitudinally, and the bottom splice plate has multiple U-shaped stiffening ribs distributed longitudinally. The web splice plate extends upward beyond the top splice plate and is then fixed to the bottom of a shear connector. The shear connector is supported on one side of the girder segment by an inner wall side plate, which is fixed to the bottom splice plate. An inner wall bottom plate is located between the two inner wall side plates, situated above the U-shaped stiffening ribs. Diagonal braces are also provided between the inner wall bottom plate and the inner wall side plates, and springs are installed between the inner wall bottom plate and the U-shaped stiffening ribs. This invention reduces steel consumption, is economical, and facilitates bridge deck camber.

[0004] However, most bridges in the current technology are supported by support columns. Support column support applies support force from the lower end of the bridge. In order to strengthen the support, multiple support columns are usually set up. The installation of support columns increases the occupied area and reduces the usable area at the lower end of the bridge. At the same time, when assembling the bridge, external boundary positioning components are often added to limit the assembly points. However, the installation of the limiting components also requires the addition of other fixing bolts, which increases the difficulty of limiting. Utility Model Content

[0005] The purpose of this invention is to provide a high-toughness steel box girder bridge, which solves the problems of bridge support and bridge assembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-toughness steel box girder bridge, comprising a top beam, a steel box fixedly connected to the lower end of the top beam, a plurality of reinforcing bars fixedly connected inside the steel box, an upper reinforcing block fixedly connected to the upper end of each reinforcing bar, a lower reinforcing block fixedly connected to the lower end of each reinforcing bar, the upper end of the upper reinforcing block fixedly connected to the lower end of the top beam, the lower end of the lower reinforcing block fixedly connected to the lower end of the steel box, a lifting mechanism provided at the lower end of the top beam, an assembly mechanism provided at the top beam, and diagonal bars fixedly connected to the left and right sides of the lower end of the top beam, the lower ends of the diagonal bars fixedly connected to the steel box, and connecting bars fixedly connected to the upper ends of the diagonal bars, the upper ends of the connecting bars fixedly connected to the lower end of the top beam.

[0007] Preferably, the lifting mechanism includes a top seat, the lower end of the top beam is fixedly connected to the top seat, the steel box is fixedly connected to the inside of the top seat, the lower end of the top seat is provided with a large slot, and the left and right sides of the top seat are respectively provided with multiple small slots.

[0008] Preferably, a large insert block is slidably connected inside the large slot, a small insert block is slidably connected inside the small slot, and the large insert block is fixedly connected to the lower end of the steel box.

[0009] Preferably, the small insert is fixedly connected to the lower end of the top beam, and top ribs are fixedly connected to the left and right sides of the top seat, with the lower end of the top ribs fixedly connected to the lower end of the top seat.

[0010] Preferably, the assembly mechanism includes assembly blocks, multiple assembly blocks are fixedly connected to the rear side of the top beam, and a combination block is fixedly connected to the rear side of the steel box. The assembly blocks are provided with assembly slots, and the combination blocks are provided with combination slots.

[0011] Preferably, the front side of the top beam is provided with multiple mounting slots, the assembly block is slidably connected to the inside of the mounting slots, and the combination block is slidably connected to the inside of the steel box.

[0012] Preferably, a large limit pin is slidably connected to the front side of the top beam, and a plurality of small limit pins are slidably connected to the front side of the top beam. The large limit pin is slidably inserted into the interior of the assembly groove, and the small limit pins are slidably inserted into the interior of the assembly groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a top seat to fix the lower end of the top beam and the lower end of the steel box. The top seat can wrap and lift the top beam and the steel box respectively. External lifting devices are fixedly connected to the left and right sides of the upper end of the top seat, thereby achieving the lifting effect at the upper end of the top beam. This reduces the support and installation devices on the ground and increases the usable ground area.

[0015] 2. In this utility model, the assembly block is slidably inserted into the mounting groove, and the combination block is slidably inserted into the steel box. Then, the large limit pin and the small limit pin limit the installation of the assembly block and the combination block respectively, thereby separating the connection, increasing the stability of the installation at the limit point, facilitating the assembly of the top beam, and reducing the limit assembly device that is connected to the outside. Attached Figure Description

[0016] Figure 1 The overall structure of this utility model is three-dimensional. Figure 1 ;

[0017] Figure 2 The overall structure of this utility model is three-dimensional. Figure 2 ;

[0018] Figure 3 The overall structure of this utility model is three-dimensional. Figure 3 ;

[0019] Figure 4 This is a partial three-dimensional view of the structure of this utility model;

[0020] Figure 5 This is a partial cross-sectional view of a part of the structure of this utility model.

[0021] In the diagram: 1. Top beam, 2. Steel box, 3. Reinforcing bar, 4. Upper reinforcing block, 5. Lower reinforcing block, 6. Lifting mechanism, 7. Assembly mechanism, 8. Diagonal bar, 9. Connecting bar, 61. Top seat, 62. Large slot, 63. Small slot, 64. Large insert, 65. Small insert, 66. Top bar, 71. Assembly block, 72. Combination block, 73. Assembly groove, 74. Combination groove, 75. Installation groove, 76. Large limit pin, 77. Small limit pin. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5A high-toughness steel box girder bridge includes a top girder 1. The top girder 1 in this technical solution possesses high toughness, which is an inherent characteristic of the top girder 1. A steel box 2 is fixedly connected to the lower end of the top girder 1. Multiple reinforcing ribs 3 are fixedly connected inside the steel box 2. Upper reinforcing blocks 4 are fixedly connected to the upper ends of the reinforcing ribs 3, and lower reinforcing blocks 5 are fixedly connected to the lower ends of the reinforcing ribs 3. The reinforcing ribs 3 connect the upper reinforcing blocks 4 and the lower reinforcing blocks 5, providing internal support to the steel box 2 and increasing the stability of the connection between the steel box 2 and the top girder 1. The upper reinforcing block 4 is fixedly connected to the lower end of the top beam 1, and the lower reinforcing block 5 is fixedly connected to the lower end of the steel box 2. The lower end of the top beam 1 is equipped with a lifting mechanism 6 and an assembly mechanism 7. The lower left and right sides of the top beam 1 are respectively fixedly connected with diagonal ribs 8. The lower end of the diagonal ribs 8 is fixedly connected to the steel box 2, and the upper end of the diagonal ribs 8 is fixedly connected with connecting ribs 9. Through the setting of diagonal ribs 8 and connecting ribs 9, the left and right sides of the top beam 1 and the steel box 2 are reinforced respectively. The upper end of the connecting ribs 9 is fixedly connected to the lower end of the top beam 1.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The lifting mechanism 6 includes a top seat 61. The lower end of the top beam 1 is fixedly connected to the top seat 61. The steel box 2 is fixedly connected to the inside of the top seat 61. A large slot 62 is opened at the lower end of the top seat 61. Multiple small slots 63 are opened on the left and right sides of the top seat 61. A large plug 64 is slidably connected inside the large slot 62. The installation of the steel box 2 and the top seat 61 is limited by the sliding connection between the large slot 62 and the large plug 64. A small plug 65 is slidably connected inside the small slot 63. The installation of the top beam 1 and the top seat 61 is limited by the sliding connection between the small slot 63 and the small plug 65. The large plug 64 is fixedly connected to the lower end of the steel box 2. The small plug 65 is fixedly connected to the lower end of the top beam 1. Top ribs 66 are fixedly connected to the left and right sides of the top seat 61. The top ribs 66 provide support and reinforcement for the left and right sides of the top seat 61. The lower end of the top ribs 66 is fixedly connected to the lower end of the top seat 61.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The assembly mechanism 7 includes assembly blocks 71. Multiple assembly blocks 71 are fixedly connected to the rear side of the top beam 1, and a combination block 72 is fixedly connected to the rear side of the steel box 2. Assembly blocks 71 have assembly slots 73, and combination blocks 72 have combination slots 74. Multiple mounting slots 75 are provided on the front side of the top beam 1. Assembly blocks 71 are slidably connected to the inside of the mounting slots 75, and combination blocks 72 are slidably connected to the inside of the steel box 2. A large limit pin 76 is slidably connected to the front side of the top beam 1, and multiple small limit pins 77 are slidably connected to the front side of the top beam 1. The large limit pin 76 is slidably inserted into the inside of the combination slot 74, and the small limit pins 77 are slidably inserted into the inside of the assembly slot 73.

[0026] The specific implementation process of this utility model is as follows: In use, the top seat 61 is installed at the lower end of the top beam 1 and the steel box 2. It is slidably inserted into the large slot 62 and the large plug 64, and slidably inserted into the small slot 63 and the small plug 65, respectively limiting the connection between the top beam 1, the steel box 2 and the top seat 61, increasing the stability of the installation connection and increasing the limiting effect. The assembly block 71 is slidably inserted into the installation groove 75, and the combination block 72 is slidably inserted into the inside of the steel box 2. Then, the large limit pin 76 and the small limit pin 77 are inserted into the inside of the assembly groove 73 and the combination groove 74, thereby limiting the assembly of the top beam 1 and increasing the assembly effect.

[0027] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-toughness steel box girder bridge, comprising a top girder (1), characterized in that: The lower end of the top beam (1) is fixedly connected to a steel box (2). Multiple reinforcing bars (3) are fixedly connected inside the steel box (2). The upper end of the reinforcing bar (3) is fixedly connected to an upper reinforcing block (4). The lower end of the reinforcing bar (3) is fixedly connected to a lower reinforcing block (5). The upper end of the upper reinforcing block (4) is fixedly connected to the lower end of the top beam (1). The lower end of the lower reinforcing block (5) is fixedly connected to the lower end of the steel box (2). The lower end of the top beam (1) is provided with a hoisting mechanism (6). The top beam (1) is provided with an assembly mechanism (7). The lower left and right sides of the lower end of the top beam (1) are respectively fixedly connected to inclined bars (8). The lower end of the inclined bars (8) is fixedly connected to the steel box (2). The upper end of the inclined bars (8) is fixedly connected to a connecting bar (9). The upper end of the connecting bar (9) is fixedly connected to the lower end of the top beam (1).

2. The high-toughness steel box girder bridge according to claim 1, characterized in that: The hoisting mechanism (6) includes a top seat (61), the lower end of the top beam (1) is fixedly connected to the top seat (61), the steel box (2) is fixedly connected to the inside of the top seat (61), the lower end of the top seat (61) is provided with a large slot (62), and the left and right sides of the top seat (61) are provided with multiple small slots (63).

3. A high-toughness steel box girder bridge according to claim 2, characterized in that: The large slot (62) is slidably connected to a large insert (64), the small slot (63) is slidably connected to a small insert (65), and the large insert (64) is fixedly connected to the lower end of the steel box (2).

4. A high-toughness steel box girder bridge according to claim 2, characterized in that: The small insert (65) is fixedly connected to the lower end of the top beam (1), and the top seat (61) is fixedly connected to the left and right sides respectively with top ribs (66), and the lower end of the top ribs (66) is fixedly connected to the lower end of the top seat (61).

5. A high-toughness steel box girder bridge according to claim 1, characterized in that: The assembly mechanism (7) includes an assembly block (71). Multiple assembly blocks (71) are fixedly connected to the rear side of the top beam (1). A combination block (72) is fixedly connected to the rear side of the steel box (2). The assembly block (71) has an assembly groove (73), and the combination block (72) has a combination groove (74).

6. A high-toughness steel box girder bridge according to claim 5, characterized in that: The top beam (1) has multiple mounting slots (75) on its front side. The assembly block (71) is slidably connected to the inside of the mounting slot (75), and the combination block (72) is slidably connected to the inside of the steel box (2).

7. A high-toughness steel box girder bridge according to claim 5, characterized in that: The front side of the top beam (1) is slidably connected to a large limit pin (76), and the front side of the top beam (1) is slidably connected to a plurality of small limit pins (77). The large limit pin (76) is slidably inserted into the interior of the combination groove (74), and the small limit pins (77) are slidably inserted into the interior of the assembly groove (73).

Images