Steel-concrete composite beam section of hybrid beam cable-stayed bridge

Abstract

The utility model provides a hybrid beam cable-stayed bridge steel-concrete combined beam section which comprises a bearing plate, a steel-concrete combined section and a steel beam transition section, and the steel-concrete combined section and the steel beam transition section are arranged on the two sides of the bearing plate respectively. The steel-concrete combined section comprises a first bottom plate, a first middle web plate and a first side web plate, the first bottom plate is connected between the first middle web plate and the first side web plate, and the first middle web plate, the first bottom plate and the first side web plate are connected to form a symmetric or asymmetric concave structure; each of the first bottom plate, the first middle web and the first side web comprises a plurality of steel grids and concrete bodies filled in the steel grids; the steel beam transition section comprises a second bottom plate, a second middle web plate and a second side web plate, and the outer contour of the cross section of the steel beam transition section is consistent with the outer contour of the cross section of the steel-concrete combined section. The steel-concrete combined section is simple in structure and convenient and efficient to construct, the stress performance of the steel-concrete combined section is optimized, and the steel-concrete combined section meets the structural requirements of the large-span cable-stayed bridge.

Description

Technical Field

[0001] This application relates to the field of construction technology for hybrid beam cable-stayed bridges, and in particular to a steel-concrete composite beam segment for a hybrid beam cable-stayed bridge. Background Technology

[0002] In the construction of the main beam of a hybrid cable-stayed bridge, the construction quality control of the steel-concrete composite section is crucial. However, in the past, the construction of the steel-concrete composite section often had quality problems due to the incomplete compaction of the concrete in the steel-concrete composite section, which resulted in the steel-concrete composite section failing to meet the design expectations in terms of the structural safety of the main beam.

[0003] The main reason why the structural safety of the steel-concrete composite section of the aforementioned hybrid beam cable-stayed bridge did not meet the design expectations is that in the past, the construction of the steel-concrete composite section usually involved directly pouring concrete into the steel box of the steel-concrete composite section. As a result, when the concrete was poured to the top of the steel box, the air inside could not be effectively expelled, causing the local concrete inside the steel box to not be fully bonded to the steel box. Consequently, the steel and concrete materials could not participate in the structural stress simultaneously and effectively, affecting the structural safety. Utility Model Content

[0004] The purpose of this application is to provide a steel-concrete composite beam segment for a hybrid beam cable-stayed bridge, which has a simple structure, is convenient and efficient to construct, optimizes the stress performance of the steel-concrete composite segment, and is suitable for the construction needs of hybrid beam cable-stayed bridge structures.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A composite steel-concrete beam segment for a hybrid cable-stayed bridge includes a pressure plate, a steel-concrete composite segment, and a steel beam transition segment, wherein the steel-concrete composite segment and the steel beam transition segment are respectively located on both sides of the pressure plate;

[0007] The steel-concrete composite section includes a first bottom plate, a first middle web plate, and a first side web plate. The first bottom plate connects the first middle web plate and the first side web plate, and the first middle web plate, the first bottom plate, and the first side web plate are connected to form a symmetrical or asymmetrical concave structure. The first bottom plate, the first middle web plate, and the first side web plate all include a plurality of steel grids and concrete filling the steel grids.

[0008] The steel beam transition section includes a second bottom plate, a second middle web plate, and a second side web plate. The outer contour of the cross-section of the steel beam transition section is consistent with the outer contour of the cross-section of the steel-concrete composite section.

[0009] Further configuration: The inner wall of the steel grid in the steel-concrete composite section is provided with several shear studs, and the distance between two adjacent shear studs is between 300mm and 500mm.

[0010] Further configuration: The inner wall of the steel grid in the steel-concrete composite section is provided with a first connecting steel bar extending from the end of the steel grid near the bearing plate to the outside of the steel grid, and the connecting steel bar is used to connect with the steel bars of the concrete beam section.

[0011] Further configuration: The steel grid is also provided with reinforcing bars, which are arranged in a U-shaped structure with their openings facing away from the pressure plate, and the two side arms of the reinforcing bars are arranged parallel to the wall panel of the steel grid.

[0012] Further configuration: Several circular holes are provided on the wall panel of the steel grating, and through steel bars with a diameter smaller than the diameter of the circular holes are inserted into the circular holes. The concrete filling the circular holes and the through steel bars form PBL shear keys.

[0013] Further configuration: The first side web of the steel-concrete composite section includes an inclined section and a vertical section. The inclined section extends upward at an angle away from the first base plate, and the two ends of the inclined section are respectively connected to the end of the first base plate and the bottom end of the vertical section.

[0014] Further configuration: The steel beam transition section also includes a second connecting steel bar extending outward from its end near the bearing plate to the outside of the bottom plate or web plate, the second connecting steel bar being used for welding and fixing to the steel bars or steel plates of the steel box girder section.

[0015] Further configuration: The second bottom plate, the second middle web plate, and the second side web plate of the steel beam transition section are all provided with steel beam stiffening ribs and T-shaped stiffening ribs connected to the bearing plate, and the steel beam stiffening ribs and T-shaped stiffening ribs are arranged at intervals.

[0016] Further configuration: The pressure plate, steel-concrete composite section and steel beam transition section are provided in two sets, and a crossbeam is provided between the two sets of steel-concrete structural blocks formed by the combination of the pressure plate, steel-concrete composite section and steel beam transition section. The two ends of the crossbeam are respectively connected to the two sets of pressure plates, and the two sets of steel-concrete structural blocks are symmetrically arranged with the center line of the crossbeam.

[0017] Further configuration: Shear studs are provided on both sides of the crossbeam.

[0018] Compared with existing technologies, the solution in this application has the following advantages:

[0019] 1. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge involved in this application has a simple structure and is convenient and efficient to construct. It optimizes the stress performance of the steel-concrete composite segment, adapts to the structural needs of long-span cable-stayed bridges, and effectively solves the construction technical problem that often exists in the construction of steel-concrete composite segments, where the concrete and steel structure box cannot be effectively bonded. This ensures the construction quality and the structural safety of the key stress-bearing parts of the bridge.

[0020] 2. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge involved in this application adopts a steel grid with multiple sidewalls, which can increase the bonding surface between the steel structure and the concrete, and can form multi-directional constraints on the concrete filling the steel grid, thereby enhancing the bonding force between the steel structure and the concrete. At the same time, the steel-concrete shear studs set on the sidewalls of the steel grid not only improve the overall structural stability of the steel-concrete composite segment, but also enable the steel-concrete composite segment to better withstand various loads.

[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is an inner view of one embodiment of the steel-concrete composite beam segment of the hybrid beam cable-stayed bridge in this application;

[0024] Figure 2 This is a schematic diagram of the steel-concrete composite section in one embodiment of the steel-concrete composite beam segment of the hybrid beam cable-stayed bridge of this application;

[0025] Figure 3 This is a schematic diagram of the steel beam joint section in one embodiment of the steel-concrete composite beam segment of the hybrid beam cable-stayed bridge of this application;

[0026] Figure 4 This is a schematic diagram of the steel-concrete composite beam structure of the steel-concrete composite section in one embodiment of the hybrid beam cable-stayed bridge of this application;

[0027] Figure 5 This is a schematic diagram of the steel beam shear studs in the steel beam joint section of a hybrid beam cable-stayed bridge according to one embodiment of this application.

[0028] In the diagram, 1. Bearing plate; 2. Steel-concrete composite section; 21. First bottom plate; 22. First intermediate web plate; 23. First side web plate; 231. Diagonal section; 232. Vertical section; 24. Steel grating; 25. Steel-concrete shear stud; 26. Reinforcing steel; 27. First connecting reinforcement; 28. PBL shear key; 3. Steel beam transition section; 31. Second bottom plate; 32. Second intermediate web plate; 33. Second side web plate; 34. Second connecting reinforcement; 35. Steel beam stiffener; 36. T-shaped stiffener; 37. Steel beam shear stud; 4. Crossbeam; 1000. Steel-concrete composite beam section; 2000. Concrete beam section; 3000. Steel box girder section; 4000. Bridge deck. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0031] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "connection" can refer to a direct connection or an indirect connection via intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish between devices, modules or units, and are not intended to limit these devices, modules or units to necessarily be different devices, modules or units, nor are they intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] Please combine Figures 1 to 5 This application discloses a steel-concrete composite beam segment 1000 for a hybrid cable-stayed bridge, which connects a concrete beam segment 2000 and a steel box girder segment 3000 to optimize the bridge structure. In a hybrid cable-stayed bridge, the main span using a steel box girder segment 3000 increases the bridge's spanning capacity, while the side spans using concrete provide strong anchoring. The steel-concrete composite beam segment 1000 of this application connects the concrete beam segment 2000 and the steel box girder segment 3000 to form a unified structure. Furthermore, the steel-concrete composite beam segment 1000 of this application ensures a full and effective bond between the steel structure and concrete, ensuring that both materials can bear loads simultaneously, thus guaranteeing the stability and safety of the bridge structure and improving its durability.

[0034] Specifically, the steel-concrete composite beam segment 1000 of the hybrid cable-stayed bridge of this application (hereinafter referred to as "steel-concrete composite beam segment 1000") includes a bearing plate 1, a steel-concrete composite segment 2, and a steel beam transition segment 3. The steel-concrete composite segment 2 and the steel beam transition segment 3 are located on both sides of the bearing plate 1. The steel-concrete composite segment 2 is used to connect with the concrete beam segment 2000, and the steel beam transition segment 3 is used to connect with the steel box girder segment 3000. The steel-concrete composite beam segment 1000 realizes the transition between the steel structure and the concrete structure, and ensures the connection strength and stability between the bridge segments.

[0035] The steel-concrete composite section 2 includes a first bottom plate 21, a first intermediate web plate 22, and a first side web plate 23. The first bottom plate 21 is connected between the first intermediate web plate 22 and the first side web plate 23. The first bottom plate 21, the first intermediate web plate 22, and the first side web plate 23 are connected to form a symmetrical or asymmetrical concave structure. In a specific embodiment, the first side web plate 23 includes an inclined section 231 and a vertical section 232. The inclined section 231 extends upward at an angle away from the first bottom plate 21, and its two ends are respectively connected to the end of the first bottom plate 21 and the bottom end of the vertical section 232. The top end of the vertical section 232 is flush with or approximately flush with the top end of the first intermediate web plate 22. The bridge deck 4000 is supported at the top end of the first intermediate web plate 22 and the top end of the vertical section 232 in the first side web plate 23.

[0036] The first base plate 21, first intermediate web plate 22, and first side web plate 23 of the steel-concrete composite section 2 of this application all include several steel grids 24 and concrete filling the steel grids 24. That is, the steel-concrete composite section 2 of this application directly uses steel grids 24 as templates. Since the steel grids 24 have multiple side walls, they can increase the bonding surface between the steel structure and the concrete, and can form multi-directional constraints on the concrete filling the steel grids 24, thereby enhancing the bonding force between the steel structure and the concrete. The base plate and web plate of this application are spliced ​​from multiple steel grids 24. The specifications of a single standard steel grid 24 are 2m long, 0.8m high, and 0.8m wide. The concrete filling the steel grids 24 is C55 self-compacting steel fiber concrete, specifically using irregularly shaped steel fibers with a steel fiber volume fraction of 2% and an aspect ratio of 60~80.

[0037] Furthermore, the inner wall panel of the steel grating 24 in the steel-concrete composite section 2 is provided with several steel-concrete shear studs 25. These shear studs 25 are welded and fixed to the inner wall of the steel grating 24 and can be embedded into the concrete filling the steel grating 24 to form a strong mechanical connection with the concrete, thereby enhancing the connection strength between the steel grating 24 and the concrete. The steel-concrete shear studs 25 not only improve the overall structural stability of the steel-concrete composite section 2 but also enable it to better withstand various loads. In addition, the steel-concrete shear studs 25 provide additional shear resistance. In structures such as bridges, the steel-concrete shear studs 25 can effectively resist shear forces generated by loads, preventing shear failure of the steel-concrete composite section 2. In this embodiment, the steel-concrete shear studs 25 are cylindrical head welded studs, and the distance between two adjacent shear studs is between 300mm and 500mm.

[0038] The steel grid 24 of the steel-concrete composite section 2 is further equipped with reinforcing bars 26. The reinforcing bars 26 are arranged in a U-shape with their openings facing away from the bearing plate 1 inside the steel grid 24, and the two side arms of the reinforcing bars 26 are parallel to the side walls of the steel grid 24. The reinforcing bars 26, which have a similar shape to the cross-section of the steel grid 24, can distribute and transfer the load on the concrete, reduce stress concentration, and further improve the structural strength of the steel-concrete composite section 2. A first connecting bar 27 is also provided inside the steel grid 24, extending outward from the side of the steel grid 24 closest to the bearing plate 1. The first connecting bar 27 is used to connect with the reinforcing bars of the adjacent concrete beam section 2000 of the steel-concrete composite beam section 1000 of this application. The end of the first connecting bar 27 located inside the steel grid 24 is welded and fixed to the wall panel of the steel grid 24, thereby realizing the connection between the steel-concrete composite section 2 and the concrete beam section 2000.

[0039] Furthermore, circular holes are formed in the steel grating 24 wall panel, and through-bars with a diameter smaller than the hole diameter are inserted into these holes. These through-bars, together with the concrete entering the holes, form PBL shear keys 28. Shear force is transferred through the synergy between the concrete entering the holes and the through-bars. PBL shear keys 28 possess characteristics such as high shear capacity, strong fatigue resistance, and high stiffness, effectively improving the overall stability and load-bearing capacity of the steel-concrete composite section 2. In this embodiment, the diameter of the circular holes is 60mm, and the diameter of the through-bars is 22mm. Multiple PBL shear keys 28 are provided within the steel-concrete composite section 2, which can significantly improve the overall shear resistance and stability of the steel-concrete composite structure.

[0040] The steel beam transition section 3 is located on the other side of the bearing plate 1 relative to the steel-concrete composite section 2. The outer contour of the cross section of the steel beam transition section 3 is consistent with the outer contour of the steel-concrete composite section 2. The steel beam transition section 3 includes a second bottom plate 31, a second middle web plate 32 and a second side web plate 33. The second bottom plate 31, the second middle web plate 32 and the second side web plate 33 are all provided with steel beam stiffening ribs 35 that are connected to the bearing plate 1 to improve the connection strength between the steel beam transition section 3 and the bearing plate 1.

[0041] The steel beam transition section 3 also includes a second connecting steel bar 34 extending outward from its end near the bearing plate 1 to the outside of the bottom plate or web. One end of the second connecting steel bar 34 is welded and fixed to the bottom plate or web, and the other end is used for the steel box girder section 3000 reinforcement connection, thereby realizing the connection between the steel beam transition section 3 and the steel box girder section 3000. Multiple second connecting steel bars 34 are arranged along the extension direction of the bottom plate and web of the steel beam transition section 3 to ensure the connection strength between the steel beam transition section 3 and the steel box girder section 3000.

[0042] Furthermore, the second bottom plate 31, the second middle web plate 32, and the second side web plate 33 of the steel beam transition section 3 are provided with T-shaped stiffening ribs 36. The T-shaped stiffening ribs 36 can further improve the connection strength between the bottom plate and web plate of the steel beam transition section 3 and the bearing plate 1. The T-shaped stiffening ribs 36 and the steel beam stiffening ribs 35 are spaced apart.

[0043] Furthermore, shear studs are provided on both sides of the second middle web 32 and the second side web 33 of the steel beam transition section 3, and steel beam shear studs 37 are provided on the upper surface of its second bottom plate 31. By providing shear studs 37 on its web and bottom plates, the steel beam transition section 3 of this application can resist axial shear force when the bottom plate and web bend under vertical load, ensuring the bending resistance of the steel beam transition section 3 and thus ensuring the connection stability between the steel beam transition section 3 and the steel box girder section 3000.

[0044] In addition, this embodiment has two sets of bearing plates 1, steel-concrete composite section 2 and steel beam transition section 3, and a crossbeam 4 connecting the two sets of bearing plates 1, steel-concrete composite section 2 and steel beam transition section 3 is provided between them. This allows the steel-concrete composite beam section 1000 of this application to be divided into three parts for easy transportation to the construction site and then assembly. This allows the two sets of bearing plates 1, steel-concrete composite section 2 and steel beam transition section 3 to be prefabricated, transported to the construction site, and then directly connected to form a whole, which greatly improves construction efficiency.

[0045] In this application, when prefabricating the steel-concrete composite beam segment 1000 in the factory, the steel structure box body of the steel-concrete composite segment 2 is first fabricated. This mainly involves connecting the steel grating 24 to the bearing plate 1 according to design requirements. Then, using a gantry crane, the steel structure box body is vertically rotated 90°, turning the box body of the steel-concrete composite segment 2 from a flat position to an inverted state, so that the openings of the steel grating 24 face upwards. Next, the reinforcing bars and prestressed ducts of the steel-concrete composite segment 2 are installed. Subsequently, the prefabricated concrete of the steel-concrete composite segment 2 is poured to complete its prefabrication. After the concrete of the steel-concrete composite segment 2 reaches its design strength, it is flipped back to its original flat position. Then, on the other side of the bearing plate 1, the bottom plate, web plate, reinforcing bars, prestressed ducts, and other structures of the steel beam transition segment 3 are installed, thus completing the prefabrication of the steel-concrete composite beam segment 1000.

[0046] The prefabricated steel-concrete composite beam segment 1000 is transported to the construction site. After the bottom formwork of bridge block B0# is installed, the segments of the steel-concrete composite beam segment 1000 (two sets of steel-concrete structural segments composed of bearing plates 1, steel-concrete joint sections 2, and steel beam transitions, and one crossbeam 4) are lifted from the water transport vessel onto temporary supports using a floating crane. The positions of each segment of the steel-concrete composite beam segment 1000 are adjusted using jacks on the temporary supports. After the positions are adjusted to within the allowable error range, welding limiters are installed to prevent displacement of the segments of the steel-concrete composite beam segment 1000. Finally, the two ends of the crossbeam 4 are welded to the bearing plates 1 of the two sets of steel-concrete structural segments to form the entire steel-concrete composite beam segment 1000. In this application, the two sets of steel-concrete structural segments of the steel-concrete composite structure are symmetrically arranged with respect to the centerline of the crossbeam 4. In addition, shear studs are provided on both sides of the crossbeam 4 to improve the shear resistance of the crossbeam 4.

[0047] During the installation of the steel-concrete composite beam segment 1000, the bottom formwork of the bridge B0# block is tightened to ensure a tight fit with the steel-concrete joint section 2 of the steel-concrete composite beam segment 1000, guaranteeing a smooth transition between the concrete and the steel box girder. The bottom slab formwork, web formwork, and reinforcing steel of the concrete beam segment 2000 are then installed, and the connecting reinforcing steel of the steel-concrete composite segment is connected to the reinforcing steel of the concrete beam segment 2000. Concrete is then poured to complete the connection between the concrete beam segment 2000 and the steel-concrete composite beam segment 1000. The steel beam transition section 3 of the steel-concrete composite beam segment 1000 is directly welded and fixed to the reinforcing steel and steel plates of the steel box girder segment 3000 via its second connecting reinforcing steel 34.

[0048] Finally, the precast bridge deck 4000 is hoisted onto the assembled composite beam segment to complete the construction of the current beam segment. Alternatively, the bridge deck 4000 formwork can be installed on the composite beam segment for cast-in-place bridge deck 4000 construction. Different construction methods can be selected according to the site construction environment.

[0049] In summary, the steel-concrete composite beam segment 1000 of the hybrid beam cable-stayed bridge proposed in this application has a simple structure and is convenient and efficient to construct. It optimizes the stress performance of the steel-concrete composite segment, adapts to the structural needs of long-span cable-stayed bridges, and effectively solves the construction technical problem of ineffective bonding between concrete and steel structure box that often exists in the construction of the previous steel-concrete composite segment 2. This ensures the construction quality and the structural safety of key stress-bearing parts of the bridge.

[0050] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A steel-concrete composite beam segment for a hybrid cable-stayed bridge, characterized in that, It includes a pressure plate, a steel-concrete composite section, and a steel beam transition section, wherein the steel-concrete composite section and the steel beam transition section are respectively located on both sides of the pressure plate; The steel-concrete composite section includes a first bottom plate, a first middle web plate, and a first side web plate. The first bottom plate connects the first middle web plate and the first side web plate, and the first middle web plate, the first bottom plate, and the first side web plate are connected to form a symmetrical or asymmetrical concave structure. The first bottom plate, the first middle web plate, and the first side web plate all include a plurality of steel grids and concrete filling the steel grids. The steel beam transition section includes a second bottom plate, a second middle web plate, and a second side web plate. The outer contour of the cross-section of the steel beam transition section is consistent with the outer contour of the cross-section of the steel-concrete composite section.

2. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The inner wall of the steel grid in the steel-concrete composite section is provided with several shear studs, and the distance between two adjacent shear studs is between 300mm and 500mm.

3. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The inner wall of the steel grid in the steel-concrete composite section is provided with a first connecting steel bar extending from the end of the steel grid near the bearing plate to the outside of the steel grid. The connecting steel bar is used to connect with the steel bars of the concrete beam section.

4. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 3, characterized in that, The steel grid is also equipped with reinforcing bars, which are arranged in a U-shape with their openings facing away from the pressure plate, and the two side arms of the reinforcing bars are arranged parallel to the wall panel of the steel grid.

5. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The steel grating has several circular holes in its wall panel. Through-bars with a diameter smaller than the hole diameter are inserted into the circular holes, and the concrete filling the circular holes and the through-bars form PBL shear keys.

6. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The first side web of the steel-concrete composite section includes an inclined section and a vertical section. The inclined section extends upward at an angle away from the first base plate, and the two ends of the inclined section are respectively connected to the end of the first base plate and the bottom of the vertical section.

7. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The steel beam transition section also includes a second connecting steel bar extending outward from its end near the bearing plate to the bottom plate or web plate, the second connecting steel bar being used for welding and fixing to the steel bars or steel plates of the steel box girder section.

8. The steel-concrete composite beam segment of a hybrid cable-stayed bridge according to claim 1 or 7, characterized in that, The second bottom plate, the second middle web plate, and the second side web plate of the steel beam transition section are all provided with steel beam stiffening ribs and T-shaped stiffening ribs connected to the bearing plate, and the steel beam stiffening ribs and T-shaped stiffening ribs are arranged at intervals.

9. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 1, characterized in that, The pressure plate, steel-concrete composite section and steel beam transition section are provided in two sets, and a crossbeam is provided between the two sets of steel-concrete structural blocks formed by the combination of pressure plate, steel-concrete composite section and steel beam transition section. The two ends of the crossbeam are respectively connected to the two sets of pressure plates, and the two sets of steel-concrete structural blocks are symmetrically arranged with the center line of the crossbeam.

10. The steel-concrete composite beam segment of the hybrid beam cable-stayed bridge according to claim 9, characterized in that, Shear studs are provided on both sides of the crossbeam.

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