Steel-concrete composite beam wet joint structure

Abstract

The utility model relates to the technical field of bridge connection structures, and discloses a steel-concrete composite beam wet joint structure which comprises a cast-in-place concrete pier, a cast-in-place concrete bridge deck is fixedly connected to the top of the cast-in-place concrete pier, and cast-in-place bridge deck steel bars are evenly and fixedly connected to the interior of the cast-in-place concrete bridge deck. The left side and the right side of the cast-in-place bridge floor steel bar are fixedly connected with connecting steel bar lasso, the other end of the connecting steel bar lasso is fixedly connected with a hook reinforcing rib, the surface of the hook reinforcing rib is fixedly connected with a longitudinal reinforcing rib, and the surface of the longitudinal reinforcing rib and the surface of the hook reinforcing rib are fixedly connected with cast-in-place concrete. In the utility model, when the prefabricated parts are manufactured in a factory, the on-site foundation construction can be carried out, the total construction period is obviously shortened, only the prefabricated parts need to be assembled, the construction time is reduced, and the factory production can effectively reduce the influence of external factors on the product quality, so that the strength and durability of the parts are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge connection structures, in particular to a steel-concrete composite beam wet joint structure. Background Art

[0002] Industrialized prefabrication and assembly of bridges is a modern bridge construction method that aims to improve construction efficiency, ensure quality, reduce costs and enhance the overall performance of bridges. By prefabricating components in factories and assembling them on site, this method provides an innovative solution to traditional bridge construction. Prefabricated components can include beams, bridge decks and bearings. The components are manufactured in specialized production facilities with controllable processes, reducing the complexity and uncertainty of on-site construction.

[0003] The construction process of industrialized prefabrication and assembly technology of bridges includes foundation construction, construction of bridge foundations and component installation at the same time on site. The prefabricated components are assembled, connected and reinforced using crane equipment according to the design drawings. After the assembly is completed, necessary connection and reinforcement measures are taken to ensure the stability and safety of the bridge. Industrialized prefabrication and assembly of bridges is an efficient, environmentally friendly and safe method of bridge construction with important application value and development potential. With the advancement of technology and changes in market demand, prefabrication and assembly technology will play a more important role in future infrastructure construction.

[0004] After searching, the Chinese patent announcement number: CN212294310U discloses a wet joint structure and construction method for steel-concrete composite bridge panels. The wet joint structure provided by the utility model consists of three parts: bridge panel steel bars, U-shaped connecting bars, and steel bar connectors. Compared with traditional prefabricated bridge panels, the length of the end steel bars is significantly shortened. After the bridge panel is placed, the U-shaped connecting bars are connected through the steel bar connector to form wet joint steel bars, and are staggered with the adjacent prefabricated panel wet joint steel bars to form a skeleton. In addition, the prefabricated bridge panel provided by the utility model forms prestressing on the concrete by tensioning the steel bars when pre-embedded steel bars. The wet joint structure can effectively reduce the construction difficulty, save construction steps while meeting the construction strength, and has good promotion significance. However, the connection bending direction of the U-shaped connecting bars in the existing wet joint structure is fixed, and cannot be better combined with the concrete pouring. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a steel-concrete composite beam wet joint structure, which aims to improve the problem in the prior art that the connection bending direction of the U-shaped connecting reinforcement is fixed and cannot be better combined with concrete pouring.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a steel-concrete composite beam wet joint structure, including a cast-in-place concrete bridge pier, the top of the cast-in-place concrete bridge pier is fixedly connected to the cast-in-place concrete bridge deck, the inside of the cast-in-place concrete bridge deck is evenly fixedly connected to the cast-in-place bridge deck steel bars, the left and right sides of the cast-in-place bridge deck steel bars are fixedly connected to connecting steel bar nooses, the other ends of the connecting steel bar nooses are fixedly connected to hook reinforcement bars, the surfaces of the hook reinforcement bars are fixedly connected to longitudinal reinforcement bars, the surfaces of the longitudinal reinforcement bars and the hook reinforcement bars are fixedly connected to cast-in-place concrete, the right side of the cast-in-place concrete is fixedly connected to a precast concrete bridge deck, the inside of the precast concrete bridge deck is fixedly connected to the precast bridge deck steel bars, the left and right sides of the cast-in-place concrete bridge deck are fixedly connected to reserved concrete connecting plates, one side of the precast concrete bridge deck is cast and connected to one side of the cast-in-place concrete bridge deck by cast-in-place concrete, and the front and rear sides of the cast-in-place concrete are provided with reinforcement mechanisms, and the reinforcement mechanisms are used to reinforce and stabilize the connection.

[0007] Through the above technical solution: the cast-in-place concrete bridge deck carries the traffic load and forms a whole with the cast-in-place concrete bridge piers to ensure the continuity and integrity of the structure; the cast-in-place bridge deck steel bars enhance the crack resistance and bearing capacity of the bridge deck, providing the necessary strength and toughness for the bridge deck; the setting of connecting steel bar noose and hook reinforcement bars strengthens the connection between the cast-in-place concrete bridge deck and the precast concrete bridge deck, ensuring that no relative displacement occurs under various loads; the pouring of cast-in-place concrete fills the gap between the precast concrete bridge deck and the cast-in-place concrete bridge deck, and through its own solidification and hardening process, the precast bridge deck steel bars and the cast-in-place bridge deck steel bars are firmly connected.

[0008] As a further description of the above technical solution:

[0009] The reinforcement mechanism includes a steel connecting plate 1, the rear side of which is fixedly connected to the front side of the cast-in-place concrete bridge deck, the other end of the steel connecting plate 1 is fixedly connected to a cable, the other end of the cable is fixedly connected to a steel connecting plate 2, the right side of the steel connecting plate 2 is fixedly connected to the reinforcing concrete, the interior of the reinforcing concrete is fixedly connected to a U-shaped steel bar, the outer wall of the U-shaped steel bar is fixedly connected to an extension steel bar, and one end of the extension steel bar is fixedly connected to the front and rear ends of the longitudinal reinforcement bar.

[0010] Through the above technical solution: the cable is an indispensable element in the bridge structure, and its other end is connected to the steel connecting piece 2, forming a strong tension transmission mechanism. The rear side of the steel connecting piece 1 is firmly connected to the front side of the cast-in-place concrete bridge deck, ensuring the stability and durability of the structure. The other end of the steel connecting piece 1 is fixedly connected to the cable, and the right side of the steel connecting piece 2 is fixedly connected to the reinforced concrete. The circular steel bar not only enhances the tensile strength of the concrete, but also improves the bearing capacity of the overall structure.

[0011] As a further description of the above technical solution:

[0012] The surface of the cast-in-place concrete is fixedly connected with a cast-in-place anti-slip joint, and the cast-in-place anti-slip joint is arranged on the surface of the cast-in-place concrete in a long strip shape.

[0013] Through the above technical solution: the anti-skid joints of the cast-in-place belt are opened in the cast-in-place concrete to buffer the thermal expansion and contraction of the cast-in-place concrete, and play an anti-skid role for vehicles and pedestrians on it.

[0014] As a further description of the above technical solution:

[0015] The front side of the cast-in-situ concrete pier is fixedly connected with a connecting bolt, and the front side of the connecting bolt is bolt-connected with a pier information board.

[0016] Through the above technical solution: the pier information board records the relevant information of the pier in detail, providing convenience for maintenance and management.

[0017] As a further description of the above technical solution:

[0018] The front side of the prefabricated concrete bridge deck is fixedly connected with an expansion bolt, and the front side of the expansion bolt is bolted with a prefabricated bridge deck information plate.

[0019] Through the above technical solution: the prefabricated bridge deck information board provides detailed information about the bridge deck, including but not limited to materials, production date and maintenance guidelines, ensuring the long-term safe use of the bridge.

[0020] As a further description of the above technical solution:

[0021] A waterproof sheet is fixedly connected to the bottom of the cast-in-situ concrete bridge pier. The waterproof sheet is a rectangular circle that wraps the cast-in-situ concrete bridge pier.

[0022] Through the above technical solution: the waterproof sheet tightly wraps the cast-in-place concrete bridge pier to ensure that its bottom is not invaded by moisture.

[0023] As a further description of the above technical solution:

[0024] A water level indicator is fixedly connected to the front side of the cast-in-place concrete pier, and the water level indicator is in a fishbone shape and contacts the water surface.

[0025] Through the above technical solution: the water level indicator is designed in a fishbone shape, and its unique shape can be in close contact with the water surface, thereby accurately reflecting the water level changes.

[0026] As a further description of the above technical solution:

[0027] A protective pad is fixedly connected to the bottom of the prefabricated concrete bridge deck, and anti-corrosion paint is fixedly connected to the top and periphery of the cast-in-situ concrete bridge pier.

[0028] Through the above technical solution: the protective pad can prevent the prefabricated concrete bridge deck from being damaged and bumped during transportation, and the anti-corrosion paint can effectively resist the invasion of severe weather and chemicals.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the present invention, the other end of the connecting steel bar lasso is fixedly connected to the bent hook reinforcement bar, and then the precast concrete bridge deck and the cast-in-place concrete bridge deck are cast and connected by cast-in-place concrete. While the precast components are manufactured in the factory, the on-site foundation construction can be carried out, which significantly shortens the total construction period. Only the precast components need to be assembled, which reduces the construction time. Factory production can effectively reduce the impact of external factors on product quality, thereby improving the strength and durability of the components.

[0031] 2. In the present invention, the reinforced concrete is provided on both sides by a cable structure consisting of a steel connecting piece 1, a cable and a steel connecting piece 2, so that the cast-in-place concrete bridge deck and the precast concrete bridge deck are more stable. The additional reinforcement mechanism can significantly improve the bearing capacity of the bridge and meet higher load requirements. The reinforcement can effectively improve the earthquake resistance and wind resistance of the bridge. The additional reinforcement can reduce the risk of structural damage caused by overload and environmental factors, and protect the safety of passing vehicles and pedestrians. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front perspective view of a cast-in-situ concrete bridge pier with a wet joint structure of a steel-concrete composite beam proposed in the present invention;

[0033] Figure 2 This is a left-side perspective view of a cast-in-situ concrete bridge pier with a wet joint structure of a steel-concrete composite beam proposed in the present invention;

[0034] Figure 3 This is a partial structural breakdown diagram of a cast-in-situ concrete bridge deck with a wet joint structure of a steel-concrete composite beam proposed in this utility model;

[0035] Figure 4 This is a partial structural diagram of the reinforcement mechanism for the wet joint structure of a steel-concrete composite beam proposed in the present invention;

[0036] Figure 5 This is a schematic diagram of the partial structure of a precast concrete bridge deck with a wet joint structure of a steel-concrete composite beam proposed in the present invention;

[0037] Figure 6 This is a partial structural breakdown diagram of the connecting steel bar lasso of a wet joint structure of a steel-concrete composite beam proposed in the utility model.

[0038] Legend:

[0039] 1. Cast-in-place concrete bridge piers; 2. Reinforcement mechanism; 201. Steel connector one; 202. Cable; 203. Steel connector two; 204. Reinforced concrete; 205. Round steel bar; 206. Extension steel bar; 3. Cast-in-place concrete bridge deck; 4. Precast concrete bridge deck; 5. Cast-in-place concrete; 6. Reserved concrete connector; 7. Precast bridge deck steel bar; 8. Cast-in-place bridge deck steel bar; 9. Connecting steel bar noose; 10. Hook reinforcement bar; 11. Longitudinal reinforcement bar; 12. Cast-in-place belt anti-slip joint; 13. Pier information board; 14. Connecting bolts; 15. Waterproof sheet; 16. Water level indicator; 17. Precast bridge deck information board; 18. Expansion bolts; 19. Protective pad; 20. Anti-corrosion paint. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Please see the attached Figure 3 , Attachment Figure 5 and attached Figure 6 The utility model provides an embodiment: a steel-concrete composite beam wet joint structure, including a cast-in-situ concrete bridge pier 1, the top of the cast-in-situ concrete bridge pier 1 is fixedly connected with a cast-in-situ concrete bridge deck 3, the inside of the cast-in-situ concrete bridge deck 3 is evenly fixedly connected with cast-in-situ bridge deck steel bars 8, the cast-in-situ bridge deck steel bars 8 enhance the crack resistance and bearing capacity of the bridge deck, and provide the necessary strength and toughness for the bridge deck, the left and right sides of the cast-in-situ bridge deck steel bars 8 are fixedly connected with connecting steel bar nooses 9, the other end of the connecting steel bar noose 9 is fixedly connected with a hook reinforcement bar 10, the surface of the hook reinforcement bar 10 is fixedly connected with a longitudinal reinforcement bar 11, the surface of the longitudinal reinforcement bar 11 and the hook reinforcement bar 10 are fixedly connected with cast-in-situ concrete 5, the cast-in-situ concrete 5 is poured The precast concrete bridge deck 4 is built to fill the gap between the precast concrete bridge deck 4 and the cast-in-place concrete bridge deck 3. The right side of the cast-in-place concrete 5 is fixedly connected with the precast concrete bridge deck 4. The introduction of the precast concrete bridge deck 4 improves the construction efficiency. Through its pouring connection with the cast-in-place concrete bridge deck 3, the seamless docking of the structure is achieved. The interior of the precast concrete bridge deck 4 is fixedly connected with the precast bridge deck steel bar 7. The left and right sides of the cast-in-place concrete bridge deck 3 are fixedly connected with the reserved concrete connecting piece 6. The setting of the reserved concrete connecting piece 6 provides convenience for further reinforcement of the bridge deck. One side of the precast concrete bridge deck 4 is poured and connected with one side of the cast-in-place concrete bridge deck 3 by cast-in-place concrete 5. The front and rear sides of the cast-in-place concrete 5 are provided with a reinforcement mechanism 2, which is used to reinforce the stable connection.

[0042] Specifically, the cast-in-place concrete pier 1 is the foundation of the entire bridge, and the cast-in-place concrete bridge deck 3 carries the traffic load and forms a whole with the cast-in-place concrete pier 1 to ensure the continuity and integrity of the structure. The cast-in-place bridge deck steel bars 8 enhance the crack resistance and bearing capacity of the bridge deck, providing the necessary strength and toughness for the bridge deck. The setting of the connecting steel bar lasso 9 and the hook reinforcement bar 10 strengthens the connection between the cast-in-place concrete bridge deck 3 and the precast concrete bridge deck 4, ensuring that no relative displacement occurs under various loads. The longitudinal reinforcement bar 11 provides additional longitudinal stability for the bridge deck, making the entire structure more stable when facing longitudinal tension. The pouring of the cast-in-place concrete 5 fills the gap between the precast concrete bridge deck 4 and the cast-in-place concrete bridge deck 3, and through its own solidification and hardening process, the precast bridge deck steel bars 7 and the cast-in-place bridge deck steel bars 8 are firmly connected.

[0043] Please see the attached Figure 3 and attached Figure 4 , the reinforcement mechanism 2 includes a steel connecting piece 201, the rear side of the steel connecting piece 201 is fixedly connected to the front side of the cast-in-place concrete bridge deck 3, the other end of the steel connecting piece 201 is fixedly connected to a cable 202, the other end of the cable 202 is fixedly connected to a steel connecting piece 203, and the right side of the steel connecting piece 203 is fixedly connected to a reinforcing concrete 204, and a circular steel bar 205 is fixedly connected to the interior of the reinforcing concrete 204. The circular steel bar 205 is embedded in the interior of the reinforcing concrete 204, which not only enhances the tensile strength of the concrete, but also improves the bearing capacity of the overall structure. The outer wall of the circular steel bar 205 is fixedly connected to an extension steel bar 206, one end of the extension steel bar 206 is fixedly connected to the front and rear ends of the longitudinal reinforcing bar 11, and one end of the extension steel bar 206 is firmly connected to both ends of the longitudinal reinforcing bar 11, forming a solid frame structure;

[0044] Specifically, the rear side of the steel connecting piece 201 is firmly connected to the front side of the cast-in-place concrete bridge deck 3, ensuring the stability and durability of the structure. The other end of the steel connecting piece 201 is fixedly connected to the cable 202. The cable 202, as an indispensable element in the bridge structure, has its other end connected to the steel connecting piece 203, forming a sturdy tension transmission mechanism. The right side of the steel connecting piece 203 is fixedly connected to the reinforced concrete 204. The reinforced concrete 204 is embedded with a circular steel bar 205, which not only enhances the tensile strength of the concrete, but also improves the bearing capacity of the overall structure.

[0045] Please see the attached Figure 1 , Attachment Figure 2 and attached Figure 3The surface of the cast-in-place concrete 5 is fixedly connected with a cast-in-place anti-slip joint 12, which is arranged in a long strip on the surface of the cast-in-place concrete 5. The front side of the cast-in-place concrete pier 1 is fixedly connected with a connecting bolt 14, and the front side of the connecting bolt 14 is bolted with a pier information sign 13. The pier information sign 13 records the relevant information of the pier in detail, which provides convenience for maintenance and management. The front side of the precast concrete bridge deck 4 is fixedly connected with an expansion bolt 18, and the front side of the expansion bolt 18 is bolted with a precast bridge deck information sign 17. The precast bridge deck information sign 17 provides detailed information about the bridge deck, ensuring the long-term safe use of the bridge.

[0046] Specifically, the cast-in-place anti-slip joints 12 enhance the safety of pedestrians and vehicles, and their layout blends perfectly with the surface of the cast-in-place concrete 5. The connecting bolts 14 ensure the stability of the structure and also carry the pier information sign 13, which records the relevant information of the piers in detail, providing convenience for maintenance and management. The expansion bolts 18 are connected to the prefabricated bridge deck information sign 17, which provides detailed information about the bridge deck, including but not limited to materials, production date and maintenance guidelines, ensuring the long-term safe use of the bridge.

[0047] Please see the attached Figure 1 and attached Figure 2 A waterproof sheet 15 is fixedly connected to the bottom of the cast-in-place concrete pier 1. The waterproof sheet 15 is a rectangular ring that wraps the cast-in-place concrete pier 1. The waterproof sheet 15 tightly wraps the cast-in-place concrete pier 1 to ensure that its bottom is not invaded by water. A water level indicator 16 is fixedly connected to the front side of the cast-in-place concrete pier 1. The water level indicator 16 is in a fishbone shape and contacts the water surface. The water level indicator 16 is designed in a fishbone shape and can contact the water surface to clearly reflect the water level. A protective pad 19 is fixedly connected to the bottom of the precast concrete bridge deck 4. Anti-corrosion paint 20 is fixedly connected to the top of the cast-in-place concrete pier 1.

[0048] Specifically, the waterproof sheet 15 surrounds the bridge pier in the form of a rectangular circle, ensuring the structural tightness and waterproof performance. The water level indicator 16 is designed in a fishbone shape. Its unique shape can closely contact the water surface, thereby accurately reflecting the water level changes. The protective pad 19 can prevent the precast concrete bridge deck 4 from being damaged or bumped during transportation. The cast-in-place concrete bridge pier 1 is also evenly coated with anti-corrosion paint 20 on all sides, which can effectively resist the invasion of severe weather and chemicals, thereby extending the service life of the bridge pier.

[0049] Working principle: The interior of the cast-in-situ concrete bridge deck 3 is evenly fixedly connected with the cast-in-situ bridge deck steel bars 8. Both ends of the cast-in-situ bridge deck steel bars 8 extend out of the ends of the cast-in-situ concrete bridge deck 3, which are convenient for connecting the steel bar lassoes 9. The interior of the precast concrete bridge deck 4 is fixedly connected with the precast bridge deck steel bars 7. Both sides of the precast bridge deck steel bars 7 also extend out of the ends of the precast concrete bridge deck 4 and are fixedly connected with the connecting steel bar lassoes 9. The other ends of the connecting steel bar lassoes 9 are then fixedly connected with the hook reinforcement bars 10. Then, the precast concrete bridge deck 4 and the cast-in-situ concrete bridge deck 3 are cast and connected by cast-in-situ concrete 5. While the precast components are manufactured in the factory, the on-site foundation construction can be carried out, which significantly shortens the total construction period. Only the precast components need to be assembled, which reduces the construction time. Factory production can effectively reduce the impact of external factors on product quality, thereby improving the strength and durability of the components.

[0050] When the pouring is completed, the two ends of the longitudinal reinforcement bar 11 are fixedly connected to the extension steel bar 206, and the surface of the extension steel bar 206 is fixedly connected to the circular steel bar 205, and then poured into a whole through the reinforced concrete 204. The reinforced concrete 204 is reinforced on both sides through the cable structure composed of steel connecting piece 1 201, cable 202 and steel connecting piece 2 203, so that the cast-in-place concrete bridge deck 3 and the precast concrete bridge deck 4 are more stable. The additional reinforcement mechanism can significantly improve the bearing capacity of the bridge and meet higher load requirements. Reinforcement can effectively improve the earthquake resistance and wind resistance of the bridge. Additional reinforcement can reduce the risk of structural damage caused by overload and environmental factors, and protect the safety of passing vehicles and pedestrians.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel-concrete composite beam wet joint structure, comprising a cast-in-situ concrete bridge pier (1), characterized in that: The top of the cast-in-situ concrete bridge pier (1) is fixedly connected to a cast-in-situ concrete bridge deck (3), the interior of the cast-in-situ concrete bridge deck (3) is evenly fixedly connected to cast-in-situ bridge deck steel bars (8), the left and right sides of the cast-in-situ bridge deck steel bars (8) are fixedly connected to connecting steel bar nooses (9), the other ends of the connecting steel bar nooses (9) are fixedly connected to hook reinforcement bars (10), the surfaces of the hook reinforcement bars (10) are fixedly connected to longitudinal reinforcement bars (11), the longitudinal reinforcement bars (11) and the surfaces of the hook reinforcement bars (10) are fixedly connected to the cast-in-situ concrete bridge pier (1). Cast-in-situ concrete (5), the right side of the cast-in-situ concrete (5) is fixedly connected to a precast concrete bridge deck (4), the interior of the precast concrete bridge deck (4) is fixedly connected to precast bridge deck steel bars (7), the left and right sides of the cast-in-situ concrete bridge deck (3) are fixedly connected to reserved concrete connecting pieces (6), one side of the precast concrete bridge deck (4) is cast and connected to one side of the cast-in-situ concrete bridge deck (3) through cast-in-situ concrete (5), and the front and rear sides of the cast-in-situ concrete (5) are both provided with reinforcement mechanisms (2), and the reinforcement mechanisms (2) are used to reinforce and stabilize the connection.

2. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: The reinforcement mechanism (2) includes a steel connecting piece (201), the rear side of the steel connecting piece (201) is fixedly connected to the front side of the cast-in-place concrete bridge deck (3), the other end of the steel connecting piece (201) is fixedly connected to a cable (202), the other end of the cable (202) is fixedly connected to a steel connecting piece (203), the right side of the steel connecting piece (203) is fixedly connected to a reinforcing concrete (204), the interior of the reinforcing concrete (204) is fixedly connected to a round steel bar (205), the outer wall of the round steel bar (205) is fixedly connected to an extension steel bar (206), and one end of the extension steel bar (206) is fixedly connected to the front and rear ends of the longitudinal reinforcing bar (11).

3. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: A cast-in-situ anti-slip joint (12) is fixedly connected to the surface of the cast-in-situ concrete (5); the cast-in-situ anti-slip joint (12) is arranged in a long strip on the surface of the cast-in-situ concrete (5).

4. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: The front side of the cast-in-situ concrete pier (1) is fixedly connected with a connecting bolt (14), and the front side of the connecting bolt (14) is bolt-connected with a pier information sign (13).

5. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: The front side of the prefabricated concrete bridge deck (4) is fixedly connected with an expansion bolt (18), and the front side of the expansion bolt (18) is bolt-connected with a prefabricated bridge deck information sign (17).

6. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: A waterproof sheet (15) is fixedly connected to the four sides of the bottom of the cast-in-situ concrete bridge pier (1), and the waterproof sheet (15) is a rectangular ring that wraps around the cast-in-situ concrete bridge pier (1).

7. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: A water level indicator (16) is fixedly connected to the front side of the cast-in-situ concrete pier (1), and the water level indicator (16) is in a fishbone shape and contacts the water surface.

8. The wet joint structure of a steel-concrete composite beam according to claim 1, characterized in that: A protective pad (19) is fixedly connected to the bottom of the prefabricated concrete bridge deck (4), and anti-corrosion paint (20) is fixedly connected to the top and surrounding of the cast-in-situ concrete bridge pier (1).

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