A concrete bridge deck steel structure

Abstract

The application provides a concrete bridge deck steel structure and relates to the technical field of bridges.The concrete bridge deck steel structure comprises a concrete layer, the two sides of the concrete layer are provided with I-shaped frames, the opposite bottom ends of the I-shaped frames are fixedly connected with inclined braces, the opposite inclined braces are fixedly connected with truss plates, the interiors of the I-shaped frames and the truss plates are provided with penetrating holes, a plurality of horizontal steel bars are inserted into the interiors of the I-shaped frames, a plurality of longitudinal steel bars are inserted into the interiors of the truss plates, and the intersection positions of the horizontal steel bars and the longitudinal steel bars are fixedly connected with permeation pipes.The cathodic protection of external current can protect the bridge subgrade steel structure, prevent oxygen and carbon dioxide in rainwater from penetrating into the surface of the steel structure through the concrete under the condition that the bridge subgrade is exposed to the external environment for a long time, and improve the service life of the steel structure and the bridge subgrade.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, specifically to a steel structure for a concrete bridge deck. Background Technology

[0002] The roadbed is the foundation of a railway track or pavement, a geotechnical structure formed through excavation or filling. Its primary function is to provide the necessary conditions for track or pavement laying and train or vehicle operation, and to bear the static and dynamic loads of the tracks, rolling stock, pavement, and traffic, while simultaneously transferring and dispersing these loads deeper into the ground. In longitudinal profile, the roadbed must ensure the required elevation of the line; in horizontal plane, it connects with bridges and tunnels to form a complete and continuous railway line. In civil engineering, the roadbed occupies a significant position in terms of construction volume, land area, and investment.

[0003] Bridge subgrades are primarily composed of reinforced concrete structures. Although concrete has certain protective properties, when exposed to the external environment for a long time, oxygen and carbon dioxide in rainwater can penetrate through the concrete to the surface of the reinforcing steel, causing corrosion. Furthermore, in cold environments, snow or ice can easily accumulate on the surface of bridge subgrades, affecting normal vehicle traffic and potentially leading to traffic accidents. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a steel structure for concrete bridge decks, which solves the problem of concrete bridge deck steel structures being susceptible to corrosion from rainwater.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel structure for a concrete bridge deck, comprising a concrete layer, with I-beams on both sides of the concrete layer, diagonal braces fixedly connected to the bottom of opposite ends of the I-beams, and truss plates fixedly connected between the opposite diagonal braces. Through holes are provided inside the I-beams and truss plates. Several transverse steel bars are inserted inside the I-beams, and several longitudinal steel bars are inserted inside the truss plates. The lower surfaces of the transverse steel bars are tightly attached to the upper surfaces of the longitudinal steel bars. Permeation pipes are fixedly connected at the intersections of the transverse and longitudinal steel bars. Several permeation holes are provided on the outer wall of the permeation pipes, and sodium chloride particles are disposed inside the permeation pipes. A support platform is provided on one side of the concrete layer, and a solar panel is installed on the top of the support platform. A temperature sensor, a temperature switch, and an energy storage power supply are disposed inside the support platform. A reference electrode plate is provided at the bottom of the concrete layer.

[0006] Preferably, an upper steel mesh is provided inside the concrete layer above the I-beam, and a lower steel mesh is provided inside the concrete layer below the I-beam.

[0007] Preferably, each of the diagonal braces is fixedly connected to a bearing plate at its top end, and a reinforcing plate is fixedly connected to the opposite end of the bearing plate.

[0008] Preferably, each of the permeation tubes is provided with a coil on its exterior, and adjacent coils are connected by a metal wire. The temperature sensor and the temperature switch are electrically connected, and the temperature switch is electrically connected to the coil.

[0009] Preferably, a water storage tank is installed at the top of each of the permeation pipes, and an installation component is fixedly connected to the top of the water storage tank. The two sides of the installation component are hollowed out, and a filter screen is fixedly connected to the bottom of the water storage tank. The upper surface of the installation component is flush with the upper surface of the concrete layer.

[0010] Preferably, the positive terminal of the energy storage power supply is connected to the reference electrode plate, and the negative terminal of the energy storage power supply is connected to the I-beam frame.

[0011] Working Principle: The main load-bearing steel structure, composed of I-beams, diagonal braces, and truss plates, shares the main load on the bridge surface. A mesh steel structure is formed by transverse steel bars inserted within the I-beams and longitudinal steel bars inserted within the truss plates. Simultaneously, the permeation pipes at the intersections of the transverse and longitudinal steel bars create a triaxial steel structure within the bridge subgrade concrete, effectively increasing the overall stiffness and strength of the bridge subgrade. This allows for effective load distribution and transfer in multiple directions, improving the concrete structure's load-bearing capacity, deformation resistance, and seismic crack resistance. The sodium chloride particles inside the permeation pipes dissolve in water, forming a sodium chloride solution that permeates evenly into the concrete layer under osmotic pressure. Inside, the concrete layer serves as the electrolyte medium for conducting current. The electrical energy converted by the solar panels is stored and supplied with DC power through an energy storage power source. The current flows from the reference electrode plate to the steel structure. Electrons in the concrete layer are transferred to the internal steel structure, protecting it from rainwater erosion and extending its service life. A temperature sensor monitors the ambient temperature. When the ambient temperature drops to the set temperature, the temperature switch closes, current flows through the coil, and the coil heats up, causing the overall temperature of the bridge subgrade to rise. At the same time, the sodium chloride solution precipitated on the subgrade surface has a low freezing point, which can prevent snow accumulation or road surface icing, improving the safety of driving in low-temperature environments.

[0012] This invention provides a steel structure for a concrete bridge deck. It has the following beneficial effects:

[0013] 1. This invention uses transverse steel bars, longitudinal steel bars, and permeation pipes to form a triaxial steel structure inside the concrete of the bridge subgrade, which effectively increases the overall stiffness and strength of the bridge subgrade and can effectively distribute and transfer loads in multiple directions, thereby improving the bearing capacity, deformation resistance, and seismic crack resistance of the concrete structure.

[0014] 2. This invention can protect the steel structure of the bridge subgrade through cathodic protection with external current, preventing oxygen and carbon dioxide in rainwater from penetrating through the concrete to the surface of the steel structure and causing corrosion when the bridge subgrade is exposed to the external environment for a long time, thus improving the service life of the steel structure and the bridge subgrade.

[0015] 3. This invention provides a heat source for the interior of the bridge subgrade by setting up coils, which can increase the temperature of the bridge subgrade in cold environments. At the same time, the sodium chloride solution that permeates through the permeation tube lowers the freezing point of the subgrade surface, preventing snow accumulation or icing on the road surface and improving the safety of driving in cold conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the concrete layer of the present invention;

[0018] Figure 3 This is a cross-sectional view of the concrete layer of the present invention;

[0019] Figure 4 This is a schematic diagram of the I-beam frame structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the permeation tube structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the water storage tank structure of the present invention.

[0022] The components include: 1. I-beam frame; 2. Reference electrode plate; 3. Longitudinal steel bars; 4. Concrete layer; 5. Support platform; 6. Solar panel; 7. Reinforcing plate; 8. Support plate; 9. Transverse steel bars; 10. Permeation pipe; 11. Upper steel mesh; 12. Lower steel mesh; 13. Diagonal brace; 14. Truss plate; 15. Through hole; 16. Filter screen; 17. Coil; 18. Permeation hole; 19. Mounting component; 20. Water storage tank. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example:

[0025] like Figure 1-6As shown, this embodiment of the invention provides a steel structure for a concrete bridge deck, including a concrete layer 4. I-beams 1 are provided on both sides of the concrete layer 4. Diagonal braces 13 are fixedly connected to the bottom of opposite ends of each I-beam 1. Truss plates 14 are fixedly connected between the opposite diagonal braces 13. Through holes 15 are provided inside both the I-beams 1 and the truss plates 14. Several transverse steel bars 9 are inserted inside the I-beams 1, and several longitudinal steel bars 3 are inserted inside the truss plates 14. The lower part of the transverse steel bars 9... The surfaces are all tightly attached to the upper surface of the longitudinal steel strips 3. Permeation pipes 10 are fixedly connected at the intersections of the transverse steel strips 9 and the longitudinal steel strips 3. The outer wall of the permeation pipe 10 has several permeation holes 18. Sodium chloride particles are placed inside the permeation pipe 10. A support platform 5 is provided on one side of the concrete layer 4. A solar panel 6 is installed on the top of the support platform 5. A temperature sensor, a temperature switch, and an energy storage power supply are installed inside the support platform 5. A reference electrode plate 2, which is a lead plate, is provided at the bottom of the concrete layer 4. The main load-bearing steel structure, consisting of I-beams 1, diagonal braces 13, and truss plates 14, shares the main load on the bridge surface. A mesh steel structure is formed by transverse steel bars 9 inserted within the I-beams 1 and longitudinal steel bars 3 inserted within the truss plates 14. Simultaneously, the permeation pipes 10 at the intersections of the transverse and longitudinal steel bars 9 and 3 create a triaxial steel structure within the bridge subgrade concrete, effectively increasing the overall stiffness and strength of the bridge subgrade. This structure can effectively distribute and transfer loads in multiple directions, improving the concrete structure's load-bearing capacity, deformation resistance, and earthquake and crack resistance. The sodium chloride particles inside the permeation pipes 10 dissolve into a sodium chloride solution upon contact with water and, under osmotic pressure, uniformly permeate into the concrete layer 4, using it as an electrolyte medium for current conduction. The energy converted from the solar panels is stored and supplied with DC power through an energy storage power source. Electrons in the concrete layer 4 are transferred to the internal steel structure, protecting it from rainwater erosion and extending its service life.

[0026] An upper steel mesh 11 is provided inside the concrete layer 4 above the I-beam 1, and a lower steel mesh 12 is provided inside the concrete layer 4 below the I-beam 1. By setting the upper steel mesh 11 and the lower steel mesh 12, the cohesion of the surface of the concrete layer 4 can be improved, the tensile and impact resistance of the surface can be improved, and cracking of the concrete surface can be prevented.

[0027] The top of each diagonal brace 13 is fixedly connected to a bearing plate 8, and the opposite end of the bearing plate 8 is fixedly connected to a reinforcing plate 7. By setting the bearing plate 8 and the reinforcing plate 7, the structural strength of the concrete layer 4 can be further enhanced.

[0028] Each permeation tube 10 is equipped with a coil 17 on its exterior. Adjacent coils 17 are connected by a metal wire. A temperature sensor and a temperature switch are electrically connected. The temperature switch is electrically connected to the coil 17. The ambient temperature is monitored by the temperature sensor. When the ambient temperature drops to the set temperature, the temperature switch closes, current flows through the coil and the coil heats up, causing the overall temperature of the bridge subgrade to rise. At the same time, the sodium chloride solution precipitated on the subgrade surface has a low freezing point, which can prevent snow accumulation or road surface icing and improve the safety of driving in low-temperature environments.

[0029] Each infiltration pipe 10 is equipped with a water storage tank 20 at its top. The top of the water storage tank 20 is fixedly connected to an installation component 19. The two sides of the installation component 19 are hollowed out. The bottom of the water storage tank 20 is fixedly connected to a filter screen 16. The upper surface of the installation component 19 is flush with the upper surface of the concrete layer 4. By setting up the water storage tank 20, rainwater can be stored and the sodium chloride particles inside the infiltration pipe 10 can be dissolved. When the environment is dry, water can be added manually. When sodium chloride particles need to be added, the installation component 19 is pulled out and the impurities in the filter screen 16 are cleaned. The fact that the upper surface of the installation component 19 is flush with the upper surface of the concrete layer 4 can avoid affecting the flatness of the roadbed.

[0030] The positive terminal of the energy storage power supply is connected to the reference electrode plate 2, and the negative terminal of the energy storage power supply is connected to the I-beam frame 1. The energy storage power supply stores the electrical energy converted by the solar panel and provides DC power. The current flows from the reference electrode plate 2 to the steel structure, and the electrons in the concrete layer 4 are transferred to the internal steel structure.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steel structure for a concrete bridge deck, comprising a concrete layer (4), characterized in that: I-beams (1) are provided on both sides of the concrete layer (4). Diagonal braces (13) are fixedly connected to the bottom of opposite ends of the I-beams (1). Truss plates (14) are fixedly connected between opposite diagonal braces (13). Through holes (15) are provided inside the I-beams (1) and the truss plates (14). Several transverse steel bars (9) are inserted inside the I-beams (1). Several longitudinal steel bars (3) are inserted inside the truss plates (14). The lower surface of the transverse steel bars (9) is close to the upper surface of the longitudinal steel bars (3). Permeation pipes (10) are fixedly connected at the intersection of the transverse steel bars (9) and the longitudinal steel bars (3). The outer wall of the permeation tube (10) is provided with several permeation holes (18), the inside of the permeation tube (10) is provided with sodium chloride particles, a support platform (5) is provided on one side of the concrete layer (4), a solar panel (6) is installed on the top of the support platform (5), a temperature sensor, a temperature switch and an energy storage power supply are provided inside the support platform (5), and a reference electrode plate (2) is provided at the bottom of the concrete layer (4); a coil (17) is provided on the outside of the permeation tube (10), adjacent coils (17) are connected by a metal wire, the temperature sensor and the temperature switch are electrically connected, and the temperature switch is electrically connected to the coil (17).

2. The steel structure for a concrete bridge deck according to claim 1, characterized in that: An upper steel mesh (11) is provided inside the concrete layer (4) above the I-beam (1), and a lower steel mesh (12) is provided inside the concrete layer (4) below the I-beam (1).

3. The steel structure for a concrete bridge deck according to claim 1, characterized in that: The top of each of the diagonal braces (13) is fixedly connected to a bearing plate (8), and the opposite end of the bearing plate (8) is fixedly connected to a reinforcing plate (7).

4. A steel structure for a concrete bridge deck according to claim 1, characterized in that: Each of the permeation pipes (10) is equipped with a water storage tank (20). The top of the water storage tank (20) is fixedly connected to an installation component (19). The two sides of the installation component (19) are hollowed out. The bottom of the water storage tank (20) is fixedly connected to a filter screen (16). The upper surface of the installation component (19) is flush with the upper surface of the concrete layer (4).

5. A steel structure for a concrete bridge deck according to claim 1, characterized in that: The positive terminal of the energy storage power supply is connected to the reference electrode plate (2), and the negative terminal of the energy storage power supply is connected to the I-beam frame (1).

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