High-strength bridge box beam widening structure

Abstract

The utility model discloses a high-strength bridge box beam widening structure, which relates to the technical field of bridge box beam widening structures and comprises a top plate, a corrugated steel web is mounted at the bottom end of the top plate, a bottom plate is mounted at one end of the corrugated steel web, and a supporting mechanism is mounted on one side of the corrugated steel web. The supporting strip is inserted into the second inserting opening, the first penetrating reinforcing steel bar is inserted into the surface of the third inserting opening, then the supporting strip and the first penetrating reinforcing steel bar are welded to the surfaces of the second inserting opening and the third inserting opening respectively, the first penetrating reinforcing steel bar is inserted into the surface of the first inserting opening, and then the supporting strip and the first penetrating reinforcing steel bar are welded. And the first through steel bars are fixed, so that the plates can be transversely and longitudinally limited, the whole supporting mechanism is stably supported and fixed, and the whole box beam is powerfully supported.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge box girder widening structures, specifically to a high-strength bridge box girder widening structure. Background Technology

[0002] Reinforced concrete bridges are ubiquitous. The main cross-sectional forms of bridge beams include hollow slab beams, T-beams, and box girders. Box girders are the most frequently used bridge span structure. A typical box girder consists of a top slab, web, and bottom slab. Because the top slab is in direct contact with external forces, it is most susceptible to damage. At both ends of the top slab, when a heavy vehicle first comes into contact with the bridge deck, the tires generate longitudinal shear forces with the deck, which over time can lead to transverse and longitudinal cracks, ultimately damaging the bridge deck.

[0003] The current publication number CN212688662U discloses a box girder structure with high load-bearing strength. The box girder includes a top plate, a bottom plate, side plates, and flange plates. A partition plate is also provided between the top plate and the bottom plate, dividing the space between the top plate and the bottom plate into an upper load layer and a lower support layer. The load layer is also provided with a load-bearing mechanism, which includes several hollow frustum support structures arranged in parallel. A buffer support plate is provided inside the support layer. The hollow frustum structures in the load layer of this invention form a relatively stable frustum structure while tilting towards each other, which improves the structural strength and can better distribute the load of the road surface above. This invention also includes a support layer with a buffer support plate inside, thereby providing a support and buffer between the bridge pier and the upper load layer, allowing the load to be distributed before being transferred to the bridge pier, avoiding excessive local pressure.

[0004] To address the issues in the application of box girder bridges in the aforementioned solutions, existing technologies employ hollow frustum structures within the load layer. These structures, while tilting towards each other, create a relatively stable frustum structure, thereby improving structural strength. However, this approach still results in insufficient stability of the support and fixation, leading to inadequate stability of the box girder bridge. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength bridge box girder widening structure to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A high-strength bridge box girder widening structure includes a top plate, a corrugated steel web plate installed at the bottom end of the top plate, a bottom plate installed at one end of the corrugated steel web plate, and a support mechanism installed on one side of the corrugated steel web plate.

[0008] The support mechanism includes a support bar, which is fixedly connected to the inner side of the corrugated steel web. A transverse diaphragm is installed on one side of the support bar, and a first through-bar is installed at the bottom end of the transverse diaphragm.

[0009] A further improvement of the present invention is that the diaphragm includes a plate, the plate is installed inside the corrugated steel web, the top of the plate has a first socket, a support bar is inserted into the second socket, and a first through steel bar is inserted into the surface of the third socket. Then the support bar and the first through steel bar can be welded to the surfaces of the second socket and the third socket respectively.

[0010] A further improvement of this utility model is that: the plate has a second insertion port on both sides, a groove in the middle, and a third insertion port at the bottom; a first through steel bar is inserted into the surface of the first insertion port, and then the first through steel bar is fixed by welding, so that the plate can be limited in the lateral and longitudinal directions, so that the overall support mechanism can be stably supported and fixed, thereby providing strong support for the overall box beam.

[0011] A further improvement of the present invention is that the corrugated steel web includes a steel web body, which is fixedly connected to the surface of the base plate. Holes are provided on the surface of the steel web body for penetrating the second through steel bar.

[0012] A further improvement of this utility model is that: a second through-bar is installed on the surface of the hole, a first plate is threaded to the front side of the steel web, the steel web is connected to the top plate and the bottom plate, and has an inverted trapezoidal structure. The first plate, the second plate and the second through-bar, the second through-bar and the first through-bar are threaded steel or special-shaped steel bars with ring ribs on the surface, thereby increasing the friction and making the fixed connection more stable.

[0013] A further improvement of this utility model is that: the rear side of the steel web is threaded with a second plate, and the steel web is connected to the top plate 1 and the bottom plate, forming an inverted trapezoidal structure. The first plate, the second plate and the second through steel bar are cross-connected in the steel web and incorporated into the concrete, making the overall steel web connection and fixation more stable.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a high-strength bridge box girder widening structure. A support bar is inserted into the inside of the second socket, and a first through steel bar is inserted into the surface of the third socket. The support bar and the first through steel bar can then be welded to the surfaces of the second and third sockets respectively. The first through steel bar is inserted into the surface of the first socket and then fixed by welding. This allows for lateral and longitudinal positioning of the plate, enabling the overall support structure to be stably supported and fixed, thereby providing strong support for the entire box girder.

[0016] 2. This utility model provides a high-strength bridge box girder widening structure. The steel web is connected to the top plate and bottom plate and has an inverted trapezoidal structure. The first plate, the second plate and the second through steel bar are cross-connected in the steel web and integrated into the concrete, so that the overall steel web 2 is more firmly connected and fixed, preventing deformation and cracking on both sides of the bridge box girder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the corrugated steel web of this utility model;

[0019] Figure 3 This is a schematic diagram of the support mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the transverse partition of this utility model.

[0021] In the figure: 1. Top plate; 2. Corrugated steel web; 20. Steel web body; 21. Hole; 22. Second through reinforcement; 23. First strip plate; 24. Second strip plate; 3. Bottom plate; 4. Support mechanism; 40. Diaphragm; 401. Plate; 402. First socket; 403. Second socket; 404. Groove; 405. Third socket; 41. Support strip; 42. First through reinforcement. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments: Example 1

[0023] like Figure 1-4 As shown, this utility model provides a high-strength bridge box girder widening structure, including a top plate 1, a corrugated steel web 2 installed at the bottom end of the top plate 1, a bottom plate 3 installed at one end of the corrugated steel web 2, and a support mechanism 4 installed on one side of the corrugated steel web 2.

[0024] The support mechanism 4 includes a support bar 41, which is fixedly connected to the inner side of the corrugated steel web 2. A transverse diaphragm 40 is installed on one side of the support bar 41. A first through steel bar 42 is installed at the bottom of the transverse diaphragm 40. The transverse diaphragm 40 includes a plate 401, which is installed inside the corrugated steel web 2. A first insertion port 402 is provided at the top of the plate 401, a second insertion port 403 is provided on both sides of the plate 401, a slot 404 is provided in the middle of the plate 401, and a third insertion port 405 is provided at the bottom of the plate 401.

[0025] Specifically, the support bar 41 is inserted into the inside of the second socket 403, and the first through steel bar 42 is inserted into the surface of the third socket 405. Then, the support bar 41 and the first through steel bar 42 can be welded to the surfaces of the second socket 403 and the third socket 405 respectively. The first through steel bar 42 is inserted into the surface of the first socket 402. Then, the first through steel bar 42 is fixed by welding, so that the plate 401 can be limited in the lateral and longitudinal directions, so that the overall support mechanism 4 can be stably supported and fixed, thereby providing strong support for the overall box beam. Example 2

[0026] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the corrugated steel web 2 includes a steel web body 20, the steel web body 20 is fixedly connected to the surface of the base plate 3, the surface of the steel web body 20 is provided with a hole 21, the surface of the hole 21 is installed with a second through steel bar 22, the front side of the steel web body 20 is threadedly connected with a first plate 23, and the rear side of the steel web body 20 is threadedly connected with a second plate 24;

[0027] Specifically, the steel web 20 is connected to the top plate 1 and the bottom plate 3, and has an inverted trapezoidal structure. The first plate 23, the second plate 24 and the second through steel bar 22 are cross-connected in the steel web 20 and integrated into the concrete, making the overall steel web 2 connection and fixation more stable. The second through steel bar 22 and the first through steel bar 42 are threaded steel bars or special-shaped steel bars with ring ribs on the surface, thereby increasing the friction and making the fixed connection more stable.

[0028] The working principle of this high-strength bridge box girder widening structure will be explained in detail below.

[0029] like Figure 1-4As shown, the support bar 41 is inserted into the inside of the second socket 403, and the first through bar 42 is inserted into the surface of the third socket 405. Then, the support bar 41 and the first through bar 42 can be welded to the surfaces of the second socket 403 and the third socket 405 respectively. The first through bar 42 is inserted into the surface of the first socket 402. Then, the first through bar 42 is fixed by welding, so that the plate 401 can be limited in the lateral and longitudinal directions, so that the overall support mechanism 4 can be stably supported and fixed, thereby providing strong support for the overall box beam. The steel web 20 is connected to the top plate 1 and the bottom plate 3 and has an inverted trapezoidal structure. The first plate 23, the second plate 24 and the second through bar 22 are cross-connected in the steel web 20 and integrated into the concrete, so that the overall steel web 2 is more stably connected and fixed.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-strength widening structure of a box girder of a bridge, comprising a top plate (1), characterized in that: The bottom end of the top plate (1) is provided with a corrugated steel web (2), one end of the corrugated steel web (2) is provided with a bottom plate (3), one side of the corrugated steel web (2) is provided with a support mechanism (4); The support mechanism (4) comprises a support strip (41), the support strip (41) is fixedly connected to the inner side of the corrugated steel web (2), one side of the support strip (41) is provided with a transverse partition plate (40), and the bottom end of the transverse partition plate (40) is provided with a first penetrating steel bar (42).

2. The high-strength widening structure of a box girder of a bridge according to claim 1, characterized in that: The transverse partition plate (40) comprises a plate piece (401), the plate piece (401) is arranged in the interior of the corrugated steel web (2), and the top of the plate piece (401) is provided with a first socket (402).

3. The high-strength widening structure of a box girder of a bridge according to claim 2, characterized in that: Second sockets (403) are formed in the two sides of the plate piece (401), a slot (404) is formed in the middle of the plate piece (401), and a third socket (405) is formed in the bottom of the plate piece (401).

4. The high-strength widening structure for a box beam of a bridge according to claim 1, characterized in that: The corrugated steel web (2) comprises a steel web body (20), the steel web body (20) is fixedly connected to the surface of the bottom plate (3), and holes (21) are formed in the surface of the steel web body (20).

5. A high-strength widening structure for a box beam of a bridge according to claim 4, characterized in that: The surface of the hole (21) is provided with a second penetrating steel bar (22), the front side of the steel web body (20) is threadedly connected with a first strip plate (23).

6. A high-strength widening structure for a box beam of a bridge according to claim 5, characterized in that: The rear side of the steel web body (20) is threadedly connected with a second strip plate (24).

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