Concrete box girder bridge reinforcing structure for large longitudinal slope girder bridge

Abstract

The utility model relates to a concrete box girder bridge reinforcing structure for a large longitudinal slope girder bridge, which comprises a box girder main body and flanges, and the flanges are fixedly connected to the left side and the right side of the box girder main body. According to the concrete box girder bridge reinforcing structure for the large longitudinal slope girder bridge, by arranging the reinforcing plates, the upper end and the lower end of the inner wall of the box girder main body have high stability, then by arranging the first notches, the anchoring parts and other parts, high supporting performance can be generated between the two reinforcing plates, and the inner space of the box girder main body can be effectively supported and fixed; by arranging the auxiliary supporting plates, the box girder main body can transmit part of pressure to the reinforced steel plates on the two sides, then the pressure borne by the box girder main body is weakened, the service life of the box girder bridge is prolonged, and finally by arranging second notches, fixing anchor plates and prestressed steel bars, flanges on the two sides can be stably connected with the box girder main body; according to the design, the bearing capacity of the flange can be improved, and the stress state of the flange is improved.

Description

Technical Field

[0001] This utility model relates to the field of box girder bridge reinforcement technology, specifically a concrete box girder bridge reinforcement structure for beam bridges with large longitudinal slopes. Background Technology

[0002] Box girder bridges are a common structural form in bridge engineering. They are hollow inside with flanges on both sides of the upper part, and their overall shape resembles a box, hence the name box girder. Box girder bridges are mainly made of reinforced concrete or steel, and common types include prestressed reinforced concrete box girders and steel box girders.

[0003] Currently, there are numerous methods for strengthening box girder bridges. For example, Chinese patent number CN202323148297.X describes a box girder shear strengthening structure. This patent includes a box girder, in which vertical prestressed steel bars are arranged on the inner and outer sides of the web of the cracked section. The upper end of the prestressed steel bars is bolted to a fixed end anchor plate to form a fixed end of the prestressed steel bar. The lower end of the prestressed steel bar is anchored to the lower part of the bottom plate by anchors, serving as the tensioning end of the prestressed steel bar. It is locked with nuts to provide prestress to the prestressed steel bar. The anchors include... The structure includes a thick steel plate with drilled holes corresponding to the prestressed steel bars arranged on the inner and outer sides of the web. A triangular limiting steel plate is vertically set at one edge of the thick steel plate. This utility model provides a complete set of efficient and feasible external vertical prestressed reinforcement structures and construction methods for box girders. It solves the problems of damage to the web and difficulty in designing anchor blocks in traditional external vertical prestressed reinforcement structures. However, since this design can only reinforce the web on both sides of the box girder, it does not help much with the internal space of the box girder, resulting in poor practicality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a reinforced concrete box girder bridge structure for beam bridges with large longitudinal slopes. It has the advantage of effectively reinforcing the internal space of the box girder and solves the problem of poor practicality of the patent.

[0005] To achieve the above-mentioned purpose of effectively reinforcing the internal space of the box girder, this utility model provides the following technical solution: a reinforced structure for a concrete box girder bridge with a large longitudinal slope, comprising a box girder body and flanges, wherein flanges are fixedly connected to both the left and right sides of the box girder body, and multiple reinforcing mechanisms are provided inside the box girder body;

[0006] The reinforcement mechanism includes reinforcement plates. Reinforcement plates are fixedly installed at both the upper and lower ends inside the main body of the box girder. Four corresponding slots are opened on the opposite surfaces of the two reinforcement plates. An anchor is fixedly installed inside each slot. Two fixing bolts connected to the inner wall of the main body of the box girder are threaded onto each anchor. Reinforcement steel columns are set between the anchors on the upper and lower sides.

[0007] Furthermore, a set of fixing plates is fixedly installed on the inner walls of both the left and right sides of the main body of the box girder, and a reinforcing steel plate is fixedly connected between each set of fixing plates.

[0008] Furthermore, multiple auxiliary support plates connected to the two reinforcing plates are fixedly installed on the reinforced steel plate.

[0009] Furthermore, multiple corresponding slots are provided on the left and right flanges, and a fixed anchor plate is fixedly installed inside each slot. Prestressed steel bars are fixedly connected between the fixed anchor plates on the left and right sides.

[0010] Furthermore, the prestressed steel bars are precision-rolled threaded steel bars.

[0011] Furthermore, each of the auxiliary support plates has its upper and lower ends fixedly connected to the outside of two reinforcing plates, and each of the auxiliary support plates is made of high-strength structural steel.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. This large longitudinal slope beam bridge uses a reinforced concrete box girder bridge structure. By setting up reinforcing plates, the upper and lower ends of the inner wall of the box girder body have strong stability. Then, by setting up slot one, anchors, fixing bolts, and reinforcing steel columns, strong support can be generated between the two reinforcing plates, which can effectively support and fix the internal space of the box girder body and prevent it from shifting. By setting up auxiliary support plates, the box girder body can transfer some of the pressure to the reinforcing steel plates on both sides, thereby reducing the pressure on the box girder body and improving the service life of the box girder bridge. Finally, by setting up slot two, fixing anchor plates, and prestressed steel bars, the flanges on both sides can be stably connected to the box girder body. This design can improve the bearing capacity of the flanges and improve their stress state. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front sectional view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the fixed platform and the reinforcing steel plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the reinforcement mechanism of this utility model;

[0018] Figure 5 For practical purposes Figure 2 Enlarged view of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the auxiliary support plate of this utility model.

[0020] In the diagram: 1. Box girder main body; 2. Flange; 3. Reinforcing mechanism; 301. Reinforcing plate; 302. Groove one; 303. Anchor; 304. Fixing bolt; 305. Reinforcing steel column; 4. Fixing platform; 5. Reinforcing steel plate; 6. Auxiliary support plate; 7. Groove two; 8. Fixing anchor plate; 9. Prestressed steel reinforcement. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-6 The concrete box girder bridge reinforcement structure for a beam bridge with a large longitudinal slope in this embodiment includes a box girder body 1 and flanges 2. Flanges 2 are fixedly connected to both the left and right sides of the box girder body 1, and multiple reinforcement mechanisms 3 are provided inside the box girder body 1.

[0023] The reinforcement mechanism 3 includes a reinforcement plate 301. The reinforcement plates 301 are fixedly installed at both the upper and lower ends of the box girder body 1. By setting the reinforcement plates 301, the upper and lower ends of the inner wall of the box girder body 1 have strong stability. The opposite surfaces of the two reinforcement plates 301 are provided with four corresponding slots 302. An anchor 303 is fixedly installed inside each slot 302. Each anchor is threaded with two fixing bolts 304 that are connected to the inner wall of the box girder body 1. A reinforcement steel column 305 is set between the anchors 303 on the upper and lower sides. By setting the slots 302, anchors 303, fixing bolts 304 and reinforcement steel columns 305, the two reinforcement plates 301 can generate strong support, which can effectively support and fix the internal space of the box girder body 1, and at the same time prevent it from shifting.

[0024] In the implementation of the case, a set of fixed plates 4 are fixedly installed on the inner walls of both sides of the main body 1 of the box girder. Each set of fixed plates 4 is fixedly connected with a reinforcing steel plate 5. The reinforcing steel plate 5 can effectively improve the load-bearing capacity of the webs on both sides of the main body 1 of the box girder and improve its stress state.

[0025] In the implementation of the case, multiple auxiliary support plates 6 are fixedly installed on the reinforcing steel plate 5 and connected to the two reinforcing plates 301. The upper and lower ends of each auxiliary support plate 6 are fixedly connected to the outside of the two reinforcing plates 301 respectively, and each auxiliary support plate 6 is made of high-strength structural steel. By setting the auxiliary support plates 6, the box girder body 1 can transfer some of the pressure to the reinforcing steel plates 5 on both sides, thereby reducing the pressure borne by the box girder body 1 and improving the service life of the box girder bridge.

[0026] In the implementation of the case, multiple corresponding slots 2 7 are opened on the left and right flanges. Each slot 2 7 is fixedly installed with a fixed anchor plate 8. Prestressed steel bars 9 are fixedly connected between the fixed anchor plates 8 on the left and right sides. The prestressed steel bars 9 are finely rolled threaded steel bars. By setting the slots 2 7, fixed anchor plates 8 and prestressed steel bars 9, the flanges 2 on both sides can be stably connected to the box girder body 1. This design can improve the load-bearing capacity of the flanges 2 and improve their stress state.

[0027] When implementing this procedure, please follow these steps:

[0028] 1) First, by setting up the reinforcing plate 301, the upper and lower ends of the inner wall of the box girder body 1 are made to have strong stability;

[0029] 2) Then, by setting components such as slot 302 and anchor 303, strong support can be generated between the two reinforcing plates 301, which can effectively support and fix the internal space of the box girder body 1.

[0030] 3) By setting auxiliary support plates 6, the main body of the box girder 1 can transfer some of the pressure to the reinforcing steel plates 5 on both sides, thereby reducing the pressure on the main body of the box girder 1 and improving the service life of the box girder bridge.

[0031] 4) Finally, by setting the second slot 7, fixing the anchor plate 8 and the prestressed steel bar 9, the flanges 2 on both sides can be stably connected to the main body 1 of the box girder. This design can improve the bearing capacity of the flanges 2 and improve their stress state.

[0032] In summary, the reinforced concrete box girder bridge structure for this large longitudinal slope beam bridge achieves strong stability at both ends of the inner wall of the box girder body 1 by setting up reinforcing plates 301. Then, by setting up slot one 302 and anchors 303, strong support is generated between the two reinforcing plates 301, effectively supporting and fixing the internal space of the box girder body 1. Furthermore, by setting up auxiliary support plates 6, some of the pressure on the box girder body 1 can be transferred to the reinforcing steel plates 5 on both sides, thereby reducing the pressure on the box girder body 1 and extending the service life of the box girder bridge. Finally, by setting up slot two 7, fixing anchor plates 8, and prestressed steel bars 9, the flanges 2 on both sides can be stably connected to the box girder body 1. This design also improves the load-bearing capacity of the flanges 2 and improves their stress state, solving the problem that the design only reinforces the webs on both sides of the box girder, while offering little benefit to the internal space of the box girder, resulting in poor practicality.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] 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 reinforced concrete box girder bridge structure for beam bridges with large longitudinal slopes, comprising a box girder body (1) and flanges (2), characterized in that: The box girder body (1) is fixedly connected to flanges (2) on both the left and right sides, and multiple reinforcing mechanisms (3) are provided inside the box girder body (1). The reinforcement mechanism (3) includes a reinforcement plate (301). The upper and lower ends of the box girder body (1) are fixedly installed with reinforcement plates (301). The opposite surfaces of the two reinforcement plates (301) are provided with four corresponding slots (302). An anchor (303) is fixedly installed inside each slot (302). Each anchor is threaded with two fixing bolts (304) that are connected to the inner wall of the box girder body (1). Reinforcement steel columns (305) are provided between the anchors (303) on the upper and lower sides.

2. The reinforcement structure for a concrete box girder bridge with a large longitudinal slope according to claim 1, characterized in that: A set of fixed plates (4) are fixedly installed on the inner walls of both sides of the main body of the box girder (1), and a reinforcing steel plate (5) is fixedly connected between each set of fixed plates (4).

3. The reinforcement structure for a concrete box girder bridge with a large longitudinal slope according to claim 2, characterized in that: Multiple auxiliary support plates (6) are fixedly installed on the reinforced steel plate (5) and connected to the two reinforcing plates (301).

4. The reinforcement structure for a concrete box girder bridge with a large longitudinal slope according to claim 1, characterized in that: Multiple corresponding slots (7) are provided on the left and right flanges. Each slot (7) is fixedly installed with a fixed anchor plate (8). Prestressed steel bars (9) are fixedly connected between the fixed anchor plates (8) on the left and right sides.

5. A reinforced concrete box girder bridge structure for beam bridges with large longitudinal slopes according to claim 4, characterized in that: The prestressed steel bars (9) are precision-rolled threaded steel bars.

6. The reinforcement structure for a concrete box girder bridge with a large longitudinal slope according to claim 3, characterized in that: Each of the auxiliary support plates (6) is fixedly connected to the outside of two reinforcing plates (301) at both the upper and lower ends, and each of the auxiliary support plates (6) is made of high-strength structural steel.

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