Special reinforced concrete bridge structure

Abstract

The utility model relates to the technical field of bridge reinforcement, in particular to a special reinforced concrete bridge structure which comprises a bridge body, a bridge pier fixedly arranged at the bottom end of the bridge body, a plurality of first reinforcing plates fixedly arranged at the top end of the side face of the bridge pier, a base fixedly arranged at the bottom end of the bridge pier and a plurality of second reinforcing plates fixedly arranged at the bottom end of the side face of the bridge pier. Two sleeves are arranged on the side face of the bridge pier, two fixing plates are fixedly arranged on the side face of each sleeve, a plurality of bolts are arranged in the four fixing plates, two fixing bases are arranged at the top ends of the four fixing plates, and two first check blocks are fixedly arranged at the bottom ends of the two fixing bases. The supporting rod has the advantages that the fixing stability of the sleeve and the bridge pier is enhanced, the loosening probability of the sleeve can be reduced, the stability of the supporting rod when the supporting rod supports the bridge body is improved, and the reinforcing effect of the supporting rod on the bridge body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement, in particular to a special reinforced concrete bridge structure. Background Technique

[0002] Special reinforced concrete is high-performance concrete designed specifically for supporting and reinforcing bridges. It can be used in positions such as the bridge body, bridge piers, and bases of bridges to improve the bearing capacity, durability, seismic performance of the bridges and repair existing damages.

[0003] It is found that the publication (announcement) number: CN221029684U discloses a concrete bridge reinforcement structure, including a base and two arc-shaped fixing plates. The upper surface of the base is fixedly connected with a support column, the upper surface of the support column is fixedly connected with a bridge body, the two arc-shaped fixing plates match the support column, both ends of the two arc-shaped fixing plates are fixedly connected with mounting plates, two bolts are jointly arranged on the surfaces of the corresponding two mounting plates, support mechanisms are arranged on both sides of the two arc-shaped fixing plates, grooves are opened on both sides of the two arc-shaped fixing plates, and adjusting mechanisms are arranged inside the two grooves. In this technology, it is disclosed that "by the support mechanisms arranged on both sides of the two arc-shaped fixing plates, rotate the two first knobs, and then move the two first lead screws to the lower surface of the support column body, so that the bridge body can be supported".

[0004] When an existing concrete bridge reinforcement structure is in use, the device supports the concrete bridge body through concrete support columns and supports both sides of the bridge body through the first lead screws to improve the stability of both sides of the bridge body. The first lead screws are arranged on the side of the support column through arc-shaped fixing plates, and the arc-shaped fixing plates are fixed on the side of the support column through bolts to provide support for the first lead screws. When a vehicle drives on the bridge, it will apply a slight vibration to the bridge body. When the vibration is transmitted to the bolts through the first lead screws and the arc-shaped fixing plates, it is easy to cause the bolts to loosen, and then the arc-shaped fixing plates become loose, resulting in a decrease in the supporting force of the arc-shaped fixing plates on the first lead screws, which is likely to cause the first lead screws to move downward, resulting in a decrease in the supporting force of the first lead screws on both sides of the bridge body and reducing the reinforcement effect of the device on the bridge body.

[0005] To solve the above problems, a special reinforced concrete bridge structure is proposed in this application. Content of the Utility Model

[0006] To solve the problems raised in the above-mentioned background art, the present utility model provides a special reinforced concrete bridge structure, which can enhance the stability when the reinforcing sleeve is fixed to the bridge pier, reduce the probability of the sleeve loosening, thereby improving the stability of the support rod when supporting the bridge body, thus enhancing the reinforcement effect of the device on the bridge body, and dispersing the extrusion force of the support rod on the bridge body to the entire support plate, avoiding excessive extrusion force on a local part of the bridge body and causing damage, reducing the probability of cracks, peeling or deformation in the external concrete layer of the bridge body, and at the same time facilitating the reduction of local stress concentration in the bridge body and improving the stability of the bridge body.

[0007] To achieve the above object, the present utility model provides the following technical solution: A special reinforced concrete bridge structure, including a bridge body, the bottom end of the bridge body is fixedly provided with a bridge pier, the top end of the side of the bridge pier is fixedly provided with a number of first reinforcing plates, the bottom end of the bridge pier is fixedly provided with a base, the bottom end of the side of the bridge pier is fixedly provided with a number of second reinforcing plates, two sleeves are provided on the side of the bridge pier, two fixing plates are fixedly provided on the side of each of the two sleeves, a number of bolts are provided inside the four fixing plates, two fixing seats are provided at the top of the four fixing plates, two first stoppers are fixedly provided at the bottom end of each of the two fixing seats, two baffles are fixedly provided at the bottom end of each of the two fixing seats, two mounting seats are provided at the bottom of the four baffles, two second stoppers are fixedly provided at the top end of each of the two mounting seats, two limiting boxes are fixedly provided on the side of each of the two mounting seats, limiting shafts are provided inside the four limiting boxes, return springs are provided on one side of the four limiting shafts, movable plates are fixedly provided on the side of the four limiting shafts, fixing sleeves are provided on the side of each of the two sleeves, threaded rods are rotatably connected inside the two fixing sleeves, and support rods are threadedly connected to the side of the two threaded rods.

[0008] Preferably, as a special reinforced concrete bridge structure of the present utility model, two placement grooves are respectively opened at the top end of each of the two mounting seats, and the inner parts of the four placement grooves are respectively in contact with the bottom ends of the four baffles. The mounting seat facilitates the limitation of the baffle to prevent the baffle from detaching from the fixing plate.

[0009] Preferably, as a special reinforced concrete bridge structure of the present utility model, one side of the four return springs is respectively fixedly connected to one side of the four limiting shafts, and the other side of the four return springs is respectively fixedly connected to the inside of the four limiting boxes. Limiting holes are respectively opened inside the four baffles, and the inner parts of the four limiting holes are respectively in contact with the side of the four limiting shafts. The return spring facilitates applying a continuous extrusion force to the limiting shaft, preventing the limiting shaft from loosening due to vibration, and improving the stability of the limiting shaft when fixing the baffle.

[0010] Preferably, as a special reinforced concrete bridge structure of the present utility model, a number of threaded holes are respectively formed in the interiors of the two fixing plates, and the interiors of the number of threaded holes are respectively in threaded connection with the sides of a number of bolts. A number of placing holes are respectively formed in the interiors of the other two fixing plates, and the number of bolts respectively penetrate through the number of placing holes. The bolts facilitate fixing the adjacent fixing plates together.

[0011] Preferably, as a special reinforced concrete bridge structure of the present utility model, two reinforcing rods are fixedly arranged on the outer sides of the two sleeves, and one sides of the four reinforcing rods are respectively fixedly connected with the sides of the two fixing sleeves. The reinforcing rods facilitate fixing the fixing sleeves and the sleeves together.

[0012] Preferably, as a special reinforced concrete bridge structure of the present utility model, sliding grooves are respectively formed in the interiors of the two fixing sleeves, and the sides of the two support rods are respectively fitted with the interiors of the two sliding grooves. The support rods facilitate supporting the bridge body.

[0013] Preferably, as a special reinforced concrete bridge structure of the present utility model, two connecting seats are fixedly arranged at the tops of the two support rods, two rotating rods are arranged between the four connecting seats, and the sides of the two rotating rods are respectively rotatably connected with the interiors of the four connecting seats. The connecting seats facilitate limiting the rotating rods.

[0014] Preferably, as a special reinforced concrete bridge structure of the present utility model, positioning blocks are fixedly arranged on the sides of the two rotating rods, and support plates are fixedly arranged at the tops of the two positioning blocks. The support plates facilitate dispersing the extrusion force of the support rods on a part of the bridge body.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. The bridge body is supported by the bridge pier. The stability of the bridge pier during support is improved by the base. The stability of the connection between the bridge pier and the bridge body is improved by the first reinforcing plate. The stability of the connection between the bridge pier and the base is improved by the second reinforcing plate. Thus, the stability of the bridge pier in supporting the bridge body is enhanced. When it is necessary to support both sides of the bridge body, two sleeves are sleeved on the side of the bridge pier, and the fixing plates are fixed together by bolts. Rotating the knob on the side of the threaded rod drives the threaded rod to rotate, thereby driving the support rod to move upward. An extrusion force is applied to the side of the bridge body through the support rod, so that the side of the bridge body can be supported. The first stop block and the second stop block limit the fixing plate, so that two adjacent fixing plates cannot be separated. The baffle limits the bolt, so that the bolt cannot move. Thus, the stability of the bolt in fixing the fixing plate is improved, and the stability of the sleeve in fixing to the bridge pier is enhanced. By strengthening the stability of the sleeve in fixing to the bridge pier, the probability of the sleeve loosening can be reduced, thereby improving the stability of the support rod in supporting the bridge body, and thus enhancing the reinforcement effect of the device on the bridge body;

[0017] 2. When the support rod moves upward, it will drive the connecting seat to move upward, thereby driving the rotating rod to move upward, thereby driving the positioning block to move upward, thereby driving the support plate to move upward. The bridge body is extruded by the support plate, so as to support the bridge body. Since the rotating rod is rotatably connected to the connecting seat, when the support rod moves upward to drive the support plate to move upward, the support plate will rotate and translate accordingly, so that the support plate will not affect the upward movement of the support rod. The area of the support plate is much larger than the area of the top end of the support rod, so that the extrusion force of the support rod on the bridge body is dispersed to the entire support plate, avoiding excessive extrusion force on a local part of the bridge body, reducing the probability of cracks, spalling or deformation of the external concrete layer of the bridge body, and facilitating the reduction of local stress concentration of the bridge body, and improving the stability of the bridge body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the bottom view structure of the present invention;

[0021] Figure 3 is a schematic diagram of the installation structure of the baffle of the present invention;

[0022] Figure 4 is an exploded structure diagram of the sleeve of the present invention;

[0023] Figure 5 Schematic diagram of the segmentation structure of the mounting seat of the present utility model;

[0024] Figure 6 Schematic diagram of the mounting structure of the support plate of the present utility model.

[0025] In the figure:

[0026] 1. Bridge body; 2. First reinforcing plate; 3. Base; 4. Second reinforcing plate; 5. Sleeve; 6. Fixed plate; 7. Bolt; 8. Fixed seat; 9. First stop block; 10. Baffle; 11. Mounting seat; 12. Second stop block; 13. Limit box; 14. Limit shaft; 15. Return spring; 16. Movable plate; 17. Fixed sleeve; 18. Threaded rod; 19. Support rod; 20. Reinforcing rod; 21. Connecting seat; 22. Rotating rod; 23. Positioning block; 24. Support plate; 25. Bridge pier. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] As Figures 1 - 6 shown;

[0030] A special reinforced concrete bridge structure includes a bridge body.

[0031] It is found that the publication (announcement) number: CN221029684U discloses a reinforced structure for a concrete bridge. To solve the existing problems in this prior art, as disclosed in the above background art, "when an existing reinforced structure for a concrete bridge is in use, the device supports the concrete bridge body through concrete support columns and supports both sides of the bridge body through the first screw rod to improve the stability of both sides of the bridge body. The first screw rod is arranged on the side of the support column through an arc-shaped fixing plate and is fixed to the side of the support column through bolts to provide support for the first screw rod. When a vehicle travels on the bridge and applies a slight vibration to the bridge body, and the vibration is transmitted to the bolts through the first screw rod and the arc-shaped fixing plate, it is easy to cause the bolts to loosen, and then the arc-shaped fixing plate to loosen, resulting in a decrease in the supporting force of the arc-shaped fixing plate on the first screw rod, which is likely to cause the first screw rod to move downward, leading to a decrease in the supporting force of the first screw rod on both sides of the bridge body and reducing the reinforcement effect of the device on the bridge body." In combination with the use, this problem is obviously an existing and difficult-to-solve problem. In view of this, to solve this technical problem, a baffle and a first stopper are added to this application document;

[0032] Furthermore:

[0033] As Figures 1 to 6 shown:

[0034] Combined with the above content: A special reinforced concrete bridge structure includes a bridge body 1. At the bottom end of the bridge body 1, there are fixed piers 25. At the top end of the side of the piers 25, there are fixed several first reinforcing plates 2. At the bottom end of the piers 25, there is a fixed base 3. At the bottom end of the side of the piers 25, there are fixed several second reinforcing plates 4. On the side of the piers 25, there are two sleeves 5. On the side of both sleeves 5, there are fixed two fixing plates 6 each. Inside the four fixing plates 6, there are several bolts 7. At the top end of the four fixing plates 6, there are two fixing seats 8. At the bottom end of both fixing seats 8, there are fixed two first stoppers 9 each. At the bottom end of both fixing seats 8, there are fixed two baffles 10 each. At the bottom end of the four baffles 10, there are two mounting seats 11. At the top end of both mounting seats 11, there are fixed two second stoppers 12 each. On the side of both mounting seats 11, there are fixed two limiting boxes 13 each. Inside the four limiting boxes 13, there are limiting shafts 14. On one side of the four limiting shafts 14, there are return springs 15. On the side of the four limiting shafts 14, there are fixed movable plates 16. On the side of both sleeves 5, there are fixed sleeves 17. Inside the two fixed sleeves 17, there are rotatably connected threaded rods 18. On the side of the two threaded rods 18, there are threadedly connected support rods 19.

[0035] In this embodiment: the bridge body 1 is supported by the pier 25, the stability of the pier 25 when supporting is improved by the base 3, the stability of the pier 25 when connected to the bridge body 1 is improved by the first reinforcing plate 2, and the stability of the pier 25 when connected to the base 3 is improved by the second reinforcing plate 4, thereby improving the stability of the bridge body 1 when the pier 25 supports the bridge body 1. The bridge body 1, the first reinforcing plate 2, the base 3 and the second reinforcing rod 20 are all made of special reinforced concrete materials with high compressive resistance, which is convenient for improving the stability of the bridge body 1. When it is necessary to support both sides of the bridge body 1, the two sleeves 5 are sleeved on the pier 25. The side of the bridge body 1 is fixed together by bolts 7, so that the sleeve 5 is fixed on the bridge pier 25, and the knob on the side of the threaded rod 18 is turned to drive the threaded rod 18 to rotate, thereby driving the support rod 19 to move up, and the side of the bridge body 1 is extruded by the support rod 19, so that the side of the bridge body 1 can be supported, and the stability of the bridge body 1 is further improved. At this time, the fixing seat 8 is moved to the top of the fixing plate 6, and the fixing seat 8 is moved down so that the bottom end of the fixing seat 8 is in contact with the top of the fixing plate 6, the inner side of the first stopper 9 is in contact with the side of the fixing plate 6, and the inner side of the second stopper 12 is in contact with the side of the fixing plate 6 The inner side of the baffle 10 fits with the side of the bolt 7, and the two movable plates 16 on the same mounting seat 11 are separated, thereby driving the limiting shaft 14 to leave the placement groove, and moving the mounting seat 11 upward, so that the baffle 10 enters the interior of the mounting seat 11, and the movable plate 16 is released. The limiting shaft 14 is squeezed by the return spring 15, so that the limiting shaft 14 enters the interior of the baffle 10, so that the baffle 10 and the mounting seat 11 are fixed together, and the fixed plate 6 is limited by the first stopper 9 and the second stopper 12, so that the two adjacent fixed plates 6 cannot be separated, and the bolt 7 is limited by the baffle 10, so that the bolt 7 cannot move. The bolt 7 cannot be loosened, thereby improving the stability of the bolt 7 when fixing the fixing plate 6, thereby improving the stability of the sleeve 5 when fixed to the pier 25, and reducing the probability of the sleeve 5 loosening. The outer sides of the sleeve 5, the fixing plate 6, the fixing seat 8, the mounting seat 11, the baffle 10, the first block 9, the second block 12, the fixing sleeve 17, etc. are all wrapped with special reinforced concrete, which is convenient for improving the strength and stability of the device. By strengthening the stability when the sleeve 5 is fixed to the pier 25, the probability of the sleeve 5 loosening can be reduced, thereby improving the stability of the support rod 19 when supporting the bridge body 1, thereby improving the reinforcement effect of the device on the bridge body 1.

[0036] In an optional embodiment: two placement grooves are respectively formed at the tops of the two mounting seats 11 , and the interiors of the four placement grooves are respectively fitted with the bottom ends of the four baffles 10 .

[0037] In this embodiment, the mounting seat 11 is convenient for limiting the baffle 10 to prevent the baffle 10 from being separated from the fixing plate 6 .

[0038] In an alternative embodiment: One side of each of the four reset springs 15 is fixedly connected to one side of each of the four limit shafts 14, and the other side of each of the four reset springs 15 is fixedly connected to the inside of each of the four limit boxes 13. Limit holes are provided inside each of the four baffles 10, and the sides of the four limit holes are respectively in contact with the sides of the four limit shafts 14.

[0039] In this embodiment: The reset springs 15 facilitate applying a continuous squeezing force to the limit shafts 14, preventing the limit shafts 14 from loosening due to vibration, and improving the stability of the limit shafts 14 when fixing the baffles 10.

[0040] In an alternative embodiment: A plurality of threaded holes are provided inside each of the two fixing plates 6, and the sides of a plurality of bolts 7 are respectively threadedly connected to the inside of the plurality of threaded holes. A plurality of placement holes are provided inside each of the other two fixing plates 6, and the plurality of bolts 7 respectively penetrate through the plurality of placement holes.

[0041] In this embodiment: The bolts 7 facilitate fixing the adjacent fixing plates 6 together.

[0042] In an alternative embodiment: Two reinforcing rods 20 are fixedly provided on the outer sides of each of the two sleeves 5, and one side of each of the four reinforcing rods 20 is fixedly connected to the side of each of the two fixing sleeves 17.

[0043] In this embodiment: The reinforcing rods 20 facilitate fixing the fixing sleeves 17 and the sleeves 5 together.

[0044] In an alternative embodiment: Chutes are provided inside each of the two fixing sleeves 17, and the sides of the two support rods 19 are respectively in contact with the inside of the two chutes.

[0045] In this embodiment: The support rods 19 facilitate supporting the bridge body 1.

[0046] In an alternative embodiment: Two connecting seats 21 are fixedly provided at the top of each of the two support rods 19. Two rotating rods 22 are provided between the four connecting seats 21, and the sides of the two rotating rods 22 are respectively rotatably connected to the inside of the four connecting seats 21.

[0047] In this embodiment: The connecting seats 21 facilitate limiting the rotating rods 22.

[0048] In an alternative embodiment: Positioning blocks 23 are fixedly provided on the sides of each of the two rotating rods 22, and support plates 24 are fixedly provided at the top of each of the two positioning blocks 23.

[0049] In this embodiment: The support plates 24 facilitate dispersing the squeezing force of the support rods 19 on a part of the bridge body 1.

[0050] The working principle and use process of the utility model are as follows: the bridge body 1 is supported by the bridge pier 25, the stability of the bridge pier 25 when supporting is improved by the base 3, the stability of the bridge pier 25 when connected to the bridge body 1 is improved by the first reinforcing plate 2, and the stability of the bridge pier 25 when connected to the base 3 is improved by the second reinforcing plate 4, thereby improving the stability of the bridge body 1 when supported by the bridge pier 25. The bridge body 1, the first reinforcing plate 2, the base 3 and the second reinforcing rod 20 are all made of special reinforced concrete materials with high compressive resistance, which is convenient for improving the stability of the bridge body 1. When it is necessary to support both sides of the bridge body 1, the two sleeves 5 are sleeved on the sides of the bridge pier 25, and the fixing plates 6 are fixed together by bolts 7, so that the sleeves 5 are fixed. The bridge pier 25 is fixed thereon, and the knob on the side of the threaded rod 18 is turned to drive the threaded rod 18 to rotate, thereby driving the support rod 19 to move upward, and applying an extrusion force to the side of the bridge body 1 through the support rod 19, so that the side of the bridge body 1 can be supported, further improving the stability of the bridge body 1. At this time, the fixing seat 8 is moved to the top of the fixing plate 6, and the fixing seat 8 is moved downward so that the bottom end of the fixing seat 8 is in contact with the top of the fixing plate 6, the inner side of the first stopper 9 is in contact with the side of the fixing plate 6, the inner side of the second stopper 12 is in contact with the side of the fixing plate 6, and the inner side of the baffle 10 is in contact with the side of the bolt 7, so that the two movable plates 16 on the same mounting seat 11 are separated, thereby driving the limiting shaft 14 to leave the placement groove, and moving the mounting seat 11 upward. The baffle plate 10 is allowed to enter the interior of the mounting seat 11, the movable plate 16 is released, and the limiting shaft 14 is squeezed by the return spring 15 so that the limiting shaft 14 enters the interior of the baffle plate 10, so that the baffle plate 10 and the mounting seat 11 are fixed together, and the fixing plate 6 is limited by the first stopper 9 and the second stopper 12 so that the two adjacent fixing plates 6 cannot be separated, and the bolt 7 is limited by the baffle plate 10 so that the bolt 7 cannot move, so that the bolt 7 cannot be loosened, thereby improving the stability of the bolt 7 when fixing the fixing plate 6, thereby improving the stability of the casing 5 when fixing the pier 25, and reducing the probability of the casing 5 loosening, casing 5, fixing plate 6, fixing seat 8, mounting seat 11, baffle plate 10, first stopper 9, second stopper 12 The outer sides of the fixing sleeve 17 are wrapped with special reinforced concrete, which is convenient for improving the strength and stability of the device. By strengthening the stability when the sleeve 5 is fixed to the pier 25, the probability of the sleeve 5 loosening can be reduced, thereby improving the stability of the support rod 19 when supporting the bridge body 1, thereby improving the reinforcement effect of the device on the bridge body 1. When the support rod 19 moves up, it will drive the connecting seat 21 to move up, thereby driving the rotating rod 22 to move up, thereby driving the positioning block 23 to move up, thereby driving the support plate 24 to move up, and the bridge body 1 is squeezed by the support plate 24, so as to support the bridge body 1. Since the rotating rod 22 is rotatably connected with the connecting seat 21, when the support rod 19 moves up and drives the support plate 24 to move up, the support plate 24 will rotate and translate accordingly.Thus, the support plate 24 will not affect the upward movement of the support rod 19. The area of the support plate 24 is much larger than the area of the top end of the support rod 19, so that the extrusion force of the support rod 19 on the bridge body 1 is dispersed to the entire support plate 24, avoiding excessive extrusion force on a local part of the bridge body 1 and causing damage, reducing the probability of cracks, peeling or deformation in the external concrete layer of the bridge body 1. At the same time, it is convenient to reduce the local stress concentration of the bridge body 1 and improve the stability of the bridge body 1.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A special reinforced concrete bridge structure, including a bridge body (1), characterized in that: The bottom end of the bridge body (1) is fixedly provided with a pier (25). At the top end of the side of the pier (25), a number of first reinforcing plates (2) are fixedly provided. At the bottom end of the pier (25), a base (3) is fixedly provided. At the bottom end of the side of the pier (25), a number of second reinforcing plates (4) are fixedly provided. Two sleeves (5) are provided on the side of the pier (25). Two fixing plates (6) are fixedly provided on the side of each of the two sleeves (5). A number of bolts (7) are provided inside the four fixing plates (6). Two fixing seats (8) are provided at the top of the four fixing plates (6). Two first stoppers (9) are fixedly provided at the bottom end of each of the two fixing seats (8). Two baffles (10) are fixedly provided at the bottom end of each of the two fixing seats (8). Two mounting seats (11) are provided at the bottom of the four baffles (10). Two second stoppers (12) are fixedly provided at the top end of each of the two mounting seats (11). Two limiting boxes (13) are fixedly provided on the side of each of the two mounting seats (11). A limiting shaft (14) is provided inside each of the four limiting boxes (13). A return spring (15) is provided on one side of each of the four limiting shafts (14). A movable plate (16) is fixedly provided on the side of each of the four limiting shafts (14). Fixed sleeves (17) are provided on the side of each of the two sleeves (5). A threaded rod (18) is rotatably connected inside each of the two fixed sleeves (17). A support rod (19) is threadedly connected to the side of each of the two threaded rods (18).

2. The special reinforced concrete bridge structure according to claim 1, characterized in that: Two placing grooves are formed at the top end of each of the two mounting seats (11), and the inner parts of the four placing grooves are respectively in fit with the bottom ends of the four baffles (10).

3. A special reinforced concrete bridge structure according to claim 1, characterized in that: One side of each of the four return springs (15) is fixedly connected to one side of each of the four limiting shafts (14), and the other side of each of the four return springs (15) is fixedly connected to the inside of each of the four limiting boxes (13). Limiting holes are formed inside the four baffles (10), and the inner parts of the four limiting holes are respectively in fit with the sides of the four limiting shafts (14).

4. A special reinforced concrete bridge structure according to claim 1, characterized in that: A number of threaded holes are formed inside two of the fixing plates (6), and the inner parts of the number of threaded holes are respectively threadedly connected to the sides of the number of bolts (7). A number of placing holes are formed inside the other two fixing plates (6), and the number of bolts (7) respectively penetrate through the number of placing holes.

5. A special reinforced concrete bridge structure according to claim 1, characterized in that: Two reinforcing rods (20) are fixedly provided on the outside of each of the two sleeves (5), and one side of each of the four reinforcing rods (20) is fixedly connected to the side of each of the two fixed sleeves (17).

6. A special reinforced concrete bridge structure according to claim 1, characterized in that: Chute grooves are formed inside each of the two fixed sleeves (17), and the sides of the two support rods (19) are respectively in fit with the inside of the two chute grooves.

7. A special reinforced concrete bridge structure according to claim 6, characterized in that: Two connecting seats (21) are fixedly provided at the top end of each of the two support rods (19). Two rotating rods (22) are provided between the four connecting seats (21), and the sides of the two rotating rods (22) are respectively rotatably connected to the inside of the four connecting seats (21).

8. A special reinforced concrete bridge structure according to claim 7, characterized in that: Positioning blocks (23) are fixedly provided on the sides of both of the two rotating rods (22), and support plates (24) are fixedly provided at the tops of both of the two positioning blocks (23).

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