Steel-concrete corrugated steel structure and pipe culvert

Abstract

The utility model provides a kind of steel mixed corrugated steel structure and pipe culvert, belong to corrugated steel technical field, including inside corrugated steel, outside corrugated steel, multiple partition pieces and multiple shear members;Inside corrugated steel has multiple first corrugated sheet, outside corrugated steel has multiple second corrugated sheet and multiple third corrugated sheet;Partition piece two ends are respectively fixedly connected with third corrugated sheet, first corrugated sheet, and first corrugated sheet, second corrugated sheet and third corrugated sheet form first pouring cavity, second pouring cavity, first pouring cavity is filled with concrete, and second pouring cavity is filled with rubber concrete;Multiple shear members are fixedly installed in first pouring cavity and second pouring cavity.The steel mixed corrugated steel structure provided by the utility model improves the structural deformation resistance and load-carrying capacity, meets the strong load demand of super-high fill engineering;Additional stress generated by settlement can be absorbed by the rubber concrete filled in the second pouring cavity through its own deformation.

Description

Technical Field

[0001] This utility model belongs to the field of corrugated steel technology, and more specifically, it relates to a steel-concrete corrugated steel structure and culvert. Background Technology

[0002] In the fields of modern transportation engineering and municipal engineering construction, corrugated sheet structures have become one of the key basic building materials due to their excellent comprehensive performance. Through a special corrugated cross-section design, corrugated sheets significantly improve the material's resistance to deformation, maintaining structural stability under complex external forces such as soil pressure and vehicle loads. This effectively solves the technical problems of traditional rigid structures being prone to cracking and damage, leading to the large-scale application of corrugated sheets in projects such as culverts, tunnels, underground passages, and underground pipelines.

[0003] However, in ultra-high embankment projects, due to the large embankment height and strong lateral earth pressure, the load-bearing capacity of single-layer corrugated steel components can no longer meet the design requirements, easily leading to safety hazards such as local deformation and structural instability. Furthermore, during the long-term operation of the culvert, the structure inevitably experiences settlement due to factors such as geological subsidence and changes in hydrological conditions. The stiffness and deformation resistance of single-layer corrugated steel are insufficient to adapt to the additional stress caused by settlement, resulting in decreased structural durability and seriously affecting the project's service life and operational safety. Utility Model Content

[0004] The purpose of this utility model is to provide a steel-concrete corrugated steel structure and culvert to solve the technical problems of insufficient load-bearing capacity of single-layer corrugated steel and inability to cope with settlement phenomena in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A steel-concrete corrugated steel structure is provided, comprising inner corrugated steel, outer corrugated steel, multiple partitions, and multiple shear members; the inner corrugated steel has multiple first corrugated plates arranged sequentially and fixedly connected along the axial direction; the outer corrugated steel is arranged outside the inner corrugated steel, and the outer corrugated steel has multiple second corrugated plates arranged at intervals along the axial direction and multiple third corrugated plates respectively fixedly installed between two adjacent second corrugated plates; the multiple partitions are grouped in pairs, and one end of two partitions in the same group is respectively connected to the third... Two sides of the corrugated sheet are fixedly connected, and the other end is fixedly connected to the same first corrugated sheet; a first casting cavity is formed between the first corrugated sheet, the second corrugated sheet, and two adjacent partitions from different groups; two partitions from the same group, the first corrugated sheet, and the third corrugated sheet form a second casting cavity; the connection positions of two adjacent first corrugated sheets are staggered with the second casting cavity; the first casting cavity is filled with plain concrete, and the second casting cavity is filled with rubber concrete; multiple shear members are fixedly installed in the first casting cavity and the second casting cavity.

[0006] In one possible implementation, the upper and lower ends of the separator are provided with horizontally arranged connecting plates. The lower connecting plate is abutted and fixedly connected to the crest of the first corrugated plate, and the upper connecting plate is abutted and fixedly connected to the connection point of the second and third corrugated plates.

[0007] In one possible implementation, the separator further includes a vertical plate, with two connecting plates respectively fixedly installed at the upper and lower ends of the vertical plate, and the vertical plate located on the side of the connecting plate away from the second casting cavity.

[0008] In one possible implementation, the shear member includes a fixed cylinder mounted on the first corrugated plate, the second corrugated plate, or the third corrugated plate, and a shear bar fixedly mounted in the fixed cylinder.

[0009] In one possible implementation, the inner wall of the fixed cylinder is provided with an internal thread section, and the shear bar is provided with an external thread section that mates with the internal thread section.

[0010] In one possible implementation, the troughs and crests of the second and third corrugated plates correspond one-to-one with the crests and troughs of the first corrugated plate; and the plurality of shear members are respectively installed at the troughs of the first corrugated plate and at the crests of the second and third corrugated plates.

[0011] In one possible implementation, adjacent first corrugated plates, second corrugated plates, and third corrugated plates, as well as the separator and the third corrugated plate, are all fixedly connected by bolts and nuts; the steel-concrete corrugated steel structure also includes multiple protective structures for protecting the bolts and nuts.

[0012] In one possible implementation, the protective structure includes a protective sleeve, filler, and sealant. The protective sleeve is fitted onto the connection between the bolt and the nut and is fixedly connected to the first corrugated plate, the second corrugated plate, or the third corrugated plate. The protective sleeve is filled with the filler, and the sealant is applied to the bolt and the nut.

[0013] In one possible implementation, a steel mesh is provided inside the first casting cavity.

[0014] The beneficial effects of the steel-concrete corrugated steel structure provided by this utility model are as follows: Compared with the prior art, the core structure of the steel-concrete corrugated steel structure of this utility model consists of inner and outer double-layer corrugated steel components and a composite concrete system. The inner corrugated steel is axially fixedly connected by multiple first corrugated plates to form a basic load-bearing skeleton; the outer corrugated steel is formed by alternating arrangement of second and third corrugated plates to form an outer support structure, wherein the third corrugated plate serves as a key load-bearing node connecting adjacent second corrugated plates. The separators are arranged in groups, with two separators in each group connecting the two sides of the third corrugated sheet to the corresponding first corrugated sheet. This achieves a rigid connection between the inner and outer structures and creates two different types of casting cavities through spatial division. The first casting cavity, enclosed by the first and second corrugated sheets and two separators from the adjacent group, primarily bears the structural load. The second casting cavity, enclosed by the two separators from the same group, the first and third corrugated sheets, is staggered with the connections of the two connected first corrugated sheets, effectively avoiding stress concentration at weak connection points. Shear members are evenly distributed in the first and second casting cavities to ensure that the inner and outer corrugations are tightly connected to the concrete to form a whole. Finally, plain concrete is poured in the first casting cavity, and rubber concrete is poured in the second casting cavity. This structure, with its double-layered skeleton of outer and inner corrugated steel and plain concrete forming a rigid load-bearing body, significantly enhances the structure's resistance to deformation through the combined action of corrugated steel and concrete. Furthermore, under the action of shear members, it strengthens the structure's stability and load-bearing capacity, meeting the high-load requirements of ultra-high embankment projects. The rubber concrete filled in the second pouring cavity can absorb the additional stress generated by settlement through its own deformation. Combined with the staggered cavity structure, it effectively alleviates stress concentration at the connection points and solves the structural durability problem caused by culvert settlement.

[0015] Another objective of this utility model is to provide a culvert comprising any of the above-mentioned steel-concrete corrugated steel structures.

[0016] This utility model provides a culvert that, due to the use of a steel-concrete corrugated steel structure, significantly improves the structure's resistance to deformation through the combined action of corrugated steel and concrete. Furthermore, under the action of shear members, it enhances the stability and load-bearing capacity of the structure, meeting the high load requirements of ultra-high embankment projects. The rubber concrete filled in the second pouring cavity can absorb the additional stress generated by settlement through its own deformation. Combined with the staggered cavity structure, it effectively alleviates stress concentration at the connection points and solves the structural durability problem caused by culvert settlement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A partial schematic diagram of the steel-concrete corrugated steel structure provided in an embodiment of this utility model;

[0019] Figure 2 A schematic diagram showing the connection of the second corrugated plate, the third corrugated plate, and the separator provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the connection of bolts, nuts and protective structures provided for embodiments of this utility model;

[0021] Figure 4 A schematic diagram of the culvert structure provided in an embodiment of this utility model.

[0022] The following are the labeling elements in the figure:

[0023] 10. Inner corrugated steel; 11. First corrugated plate; 12. First casting cavity; 13. Bolt; 14. Nut; 20. Outer corrugated steel; 21. Second corrugated plate; 22. Third corrugated plate; 23. Second casting cavity; 30. Separator; 31. Connecting plate; 32. Vertical plate; 40. Shear member; 41. Fixed cylinder; 42. Shear bar; 50. Plain concrete; 60. Rubber concrete; 70. Protective structure; 71. Protective sleeve; 72. Filler; 73. Sealant; 80. Culvert. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Please see Figures 1 to 4The present invention provides a steel-concrete corrugated steel structure. A steel-concrete corrugated steel structure includes an inner corrugated steel 10, an outer corrugated steel 20, multiple partitions 30, and multiple shear members 40. The inner corrugated steel 10 has multiple first corrugated plates 11 arranged sequentially and fixedly connected along the axial direction. The outer corrugated steel 20 is arranged outside the inner corrugated steel 10, and the outer corrugated steel 20 has multiple second corrugated plates 21 arranged at intervals along the axial direction and multiple third corrugated plates 22 respectively fixedly installed between two adjacent second corrugated plates 21. The partitions 30 are grouped in pairs, and one end of two partitions 30 in the same group is fixed to both sides of the third corrugated plate 22. One end is connected to the other end, and the other end is fixedly connected to the same first corrugated plate 11; the first corrugated plate 11, the second corrugated plate 21 and two adjacent partitions 30 of different groups form a first pouring cavity 12, and the two partitions 30 of the same group, the first corrugated plate 11 and the third corrugated plate 22 form a second pouring cavity 23, and the connection positions of two adjacent first corrugated plates 11 are staggered with the second pouring cavity 23; the first pouring cavity 12 is filled with plain concrete 50, and the second pouring cavity 23 is filled with rubber concrete 60; multiple shear members 40 are fixedly installed in the first pouring cavity 12 and the second pouring cavity 23.

[0029] Compared with the prior art, the core structure of the steel-concrete corrugated steel structure provided by this utility model consists of inner and outer double-layer corrugated steel components and a composite concrete system. The inner corrugated steel 10 is axially fixedly connected by multiple first corrugated plates 11 to form a basic load-bearing skeleton. The outer corrugated steel 20 forms an outer support structure by alternating arrangement of second corrugated plates 21 and third corrugated plates 22, wherein the third corrugated plate 22 serves as a key load-bearing node connecting adjacent second corrugated plates 21. The separators 30 are arranged in groups, with two separators 30 in each group connecting the two sides of the third corrugated plate 22 to the corresponding first corrugated plate 11. This achieves a rigid connection between the inner and outer layers of the structure and also creates two different types of casting cavities through spatial division. The first casting cavity 12 is formed by the first corrugated plate 11, the second corrugated plate 21, and two separators 30 in adjacent groups, and mainly bears the load-bearing capacity of the main structure. The second casting cavity 23 is formed by the two separators 30 in the same group, the first corrugated plate 11, and the third corrugated plate 22, and the connection positions with the two connected first corrugated plates 11 are staggered to effectively avoid stress concentration at weak connection points. Shear members 40 are evenly distributed in the first and second casting cavities 23 to ensure that the inner and outer corrugations are tightly connected to the concrete to form a whole. Finally, plain concrete 50 is poured in the first casting cavity 12, and rubber concrete 60 is poured in the second casting cavity 23. Through this structure, the double-layer skeleton of outer corrugated steel 20 and inner corrugated steel, together with plain concrete 50, forms a rigid load-bearing body. The combined effect of corrugated steel and concrete significantly improves the structure's resistance to deformation. Furthermore, under the action of shear member 40, the stability and load-bearing capacity of the structure are enhanced, meeting the high load requirements of ultra-high embankment projects. Meanwhile, the rubber concrete 60 filled by the second pouring cavity 23 can absorb the additional stress generated by settlement through its own deformation. Combined with the staggered cavity structure, it effectively alleviates stress concentration at the connection points and solves the structural durability problem caused by the settlement of culvert 80.

[0030] Please see Figure 1 and Figure 2As a specific embodiment of the steel-concrete corrugated steel structure provided by this utility model, the upper and lower ends of the partition 30 are provided with horizontally arranged connecting plates 31. The lower connecting plate 31 is connected to and fixedly joined with the crest of the first corrugated plate 11, and the upper connecting plate 31 is connected to and fixedly joined with the connection points of the second corrugated plate 21 and the third corrugated plate 22. The partition 30 achieves precise connection with the inner corrugated steel and the outer corrugated steel through the upper and lower horizontal connecting plates 31. The lower connecting plate 31 is connected and fixedly joined with the crest of the inner first corrugated plate 11, utilizing the structural strength advantage at the crest to transfer the vertical load. The upper connecting plate 31 is connected and fixedly joined with the connection points of the outer second corrugated plate 21 and the third corrugated plate 22, effectively dispersing the outer load through the connection nodes. This connection method allows the partition 30 to serve as both a structural support frame and a boundary member of the first casting cavity 12 and the second casting cavity 23. In this way, the horizontally arranged connecting plate 31 increases the contact area between the separator 30 and the inner corrugated steel 10 and the outer corrugated steel 20. The upper and lower connection points correspond to the key stress-bearing parts of the inner and outer layer structures, thereby enhancing the collaborative working ability of the double-layer steel frame.

[0031] Please see Figure 1 and Figure 2 As a specific embodiment of the corrugated steel structure provided by this utility model, the partition 30 also includes a vertical plate 32, and two connecting plates 31 are respectively fixedly installed at the upper and lower ends of the vertical plate 32, with the vertical plate 32 located on the side of the connecting plate 31 away from the second pouring cavity 23; the partition 30 is a U-shaped structure composed of two connecting plates 31 and a vertical plate 32. The vertical plate 32 serves as the core load-bearing component, with its upper and lower ends fixedly connected to the horizontally arranged connecting plates 31, and the vertical plate 32 located on the side of the connecting plate 31 away from the second pouring cavity 23. This layout allows the vertical plate 32 to mainly bear the vertical load and lateral force of the structure, avoiding bending deformation under load; at the same time, by reasonably arranging the position of the vertical plate 32, sufficient space is reserved for the rubber concrete 60 of the second pouring cavity 23, ensuring that the elastic material can fully play its deformation buffering role, and further improving the stress dispersion ability of the structure under settlement conditions.

[0032] Please see Figure 1As a specific embodiment of the corrugated steel structure provided by this utility model, the shear member 40 includes a fixed cylinder 41 installed on the first corrugated plate 11, the second corrugated plate 21, or the third corrugated plate 22, and a shear rod 42 fixedly installed in the fixed cylinder 41. The shear member 40 adopts a combined structure of fixed cylinder 41 and shear rod 42. The fixed cylinder 41 stably installs the shear member 40 in the preset position of the first corrugated plate 11, the second corrugated plate 21, or the third corrugated plate 22, while the shear rod 42 is fixedly embedded in the fixed cylinder 41 to form an integral force-bearing unit. This split design not only ensures the reliable connection between the shear member 40 and the corrugated steel frame, but also achieves mechanical interlocking between the inner corrugated steel 10, the outer corrugated steel 20, and the concrete through the structure of the shear rod 42 extending into the first pouring cavity 12 and the second pouring cavity 23. Under load, shear member 40 can effectively transfer the shear force at the steel-concrete interface, prevent relative slippage between the two materials due to deformation differences, and enhance the collaborative working performance of the composite structure.

[0033] Please see Figure 1 As a specific embodiment of the corrugated steel structure provided by this utility model, the inner wall of the fixed cylinder 41 is provided with an internal thread section, and the shear rod 42 is provided with an external thread section that mates with the internal thread section; that is, the fixed cylinder 41 and the shear rod 42 are detachably connected through threaded engagement. This design ensures precise docking and firm connection between the shear rod 42 and the fixed cylinder 41, and can transmit interface shear force through threaded engagement, preventing the shear member 40 from loosening or falling off under stress. One end of the fixed cylinder 41 is fixedly installed on the inner corrugated steel 10 or the outer corrugated steel 20 by welding or other methods.

[0034] Please see Figure 1 As a specific embodiment of the steel-concrete corrugated steel structure provided by this utility model, the troughs and crests of the second corrugated plate 21 and the third corrugated plate 22 correspond one-to-one with the crests and troughs of the first corrugated plate 11; multiple shear members 40 are respectively installed at the troughs of the first corrugated plate 11 and the crests of the second corrugated plate 21 and the third corrugated plate 22. The troughs and crests of the second corrugated plate 21 and the third corrugated plate 22 correspond one-to-one with the crests and troughs of the first corrugated plate 11, forming a symmetrical correspondence between the inner and outer corrugated structures. The shear members 40 are precisely arranged at the troughs of the first corrugated plate 11 and the crests of the second corrugated plate 21 and the third corrugated plate 22. The corrugated design makes the structure more uniformly stressed and avoids local stress overload; while the arrangement of the shear members 40 at key stress points can efficiently transfer interfacial shear force, strengthen the synergistic effect of steel and concrete, and significantly improve the overall deformation resistance and load-bearing stability of the structure.

[0035] Please see Figures 1 to 3As a specific embodiment of the steel-concrete corrugated steel structure provided by this utility model, adjacent first corrugated plates 11, second corrugated plates 21, and third corrugated plates 22, as well as the separator 30 and the third corrugated plate 22, are all fixedly connected using bolts 13 and nuts 14. The steel-concrete corrugated steel structure also includes multiple protective structures 70 for protecting the bolts 13 and nuts 14. Bolts 13 and nuts 14 are used to fix the connection nodes of adjacent first corrugated plates 11, second corrugated plates 21, third corrugated plates 22, and the separator 30 and the third corrugated plate 22, and protective structures 70 are provided accordingly. The bolt 13 connection achieves detachable assembly of the nodes through standardized components, ensuring connection strength while facilitating installation, adjustment, and subsequent maintenance. The protective structures 70 provide effective protection for the bolts 13 and nuts 14, isolating them from external environmental influences such as soil erosion and water immersion, and preventing the connection components from rusting and failing. This design retains the advantage of quick installation of corrugated plate structures, and significantly improves the fatigue resistance of the nodes through the reliability of mechanical connections and the durability of protective measures.

[0036] Please see Figure 3 As a specific embodiment of the steel-concrete corrugated steel structure provided by this utility model, the protective structure 70 includes a protective sleeve 71, a filler 72, and a sealant 73. The protective sleeve 71 is fitted onto the connection between the bolt 13 and the nut 14, and is fixedly connected to the first corrugated plate 11, the second corrugated plate 21, or the third corrugated plate 22. The protective sleeve 71 is filled with the filler 72, and the sealant 73 is applied to the bolt 13 and the nut 14. The protective structure 70 adopts a combination of the protective sleeve 71, the filler 72, and the sealant 73. The protective sleeve 71 is fitted onto the connection between the bolt 13 and the nut 14 and fixed to the corrugated plate. The interior is filled with polymer cement or sealant 73, and the surfaces of the bolt 13 and the nut 14 are pre-applied with sealant 73. This multi-layer protective design forms a physical barrier through the protective sleeve 71, isolating external moisture and corrosive media. The filler 72 fills the interior of the protective sleeve 71 to achieve a seal, forming a dual anti-corrosion system in conjunction with the surface sealant 73. This method can effectively slow down the corrosion rate of the connectors, prevent bolts 13 and nuts 14 from failing due to environmental corrosion, and ensure the long-term connection strength of the nodes.

[0037] As a specific embodiment of the corrugated steel structure with reinforced concrete provided by this utility model, a reinforcing mesh is provided inside the first casting cavity 12; the addition of a reinforcing mesh inside the first casting cavity 12 forms a reinforced concrete composite stress system. The reinforcing mesh is evenly distributed and forms a spatial stress network with the inner corrugated steel 10 and the outer corrugated steel 20. When pouring plain concrete 50, the reinforcing mesh is tightly bonded to the concrete, and the tensile strength of the reinforcing steel compensates for the insufficient tensile strength of the concrete, significantly improving the overall crack resistance and load-bearing capacity of the cavity. Under the action of ultra-high embankment load, the reinforcing mesh can effectively disperse stress and prevent cracks from forming in the plain concrete 50 due to excessive local stress.

[0038] Please see Figure 4 This utility model embodiment also provides a culvert 80, which includes any of the above-mentioned steel-concrete corrugated steel structures.

[0039] The culvert 80 provided by this utility model adopts the above-mentioned steel-concrete corrugated steel structure. Therefore, the combination of corrugated steel and concrete greatly improves the structural resistance to deformation. Furthermore, under the action of shear member 40, the stability and load-bearing capacity of the structure are enhanced, meeting the high load requirements of ultra-high embankment projects. With the help of the rubber concrete 60 filled in the second pouring cavity 23, it can absorb the additional stress generated by settlement through its own deformation. Combined with the staggered cavity structure, it effectively alleviates the stress concentration at the connection points and solves the structural durability problem caused by the settlement of the culvert 80.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel-concrete corrugated steel structure, characterized in that, The system includes inner corrugated steel, outer corrugated steel, multiple partitions, and multiple shear members. The inner corrugated steel has multiple first corrugated plates arranged sequentially and fixedly connected along the axial direction. The outer corrugated steel is arranged outside the inner corrugated steel and has multiple second corrugated plates arranged at intervals along the axial direction and multiple third corrugated plates respectively fixedly installed between two adjacent second corrugated plates. The partitions are grouped in pairs, and one end of two partitions in the same group is fixedly connected to both sides of the third corrugated plate, and the other end is fixedly connected to the same first corrugated plate. A first casting cavity is formed between the first corrugated plates, the second corrugated plates, and two adjacent partitions in different groups. A second casting cavity is formed between two partitions in the same group, the first corrugated plates, and the third corrugated plates. The connection positions of two adjacent first corrugated plates are staggered with the second casting cavity. The first casting cavity is filled with plain concrete, and the second casting cavity is filled with rubber concrete. The multiple shear members are fixedly installed in the first casting cavity and the second casting cavity.

2. The steel-concrete corrugated steel structure as described in claim 1, characterized in that, The upper and lower ends of the separator are provided with horizontally arranged connecting plates. The lower connecting plate is abutted and fixedly connected to the crest of the first corrugated plate, and the upper connecting plate is abutted and fixedly connected to the connection point of the second and third corrugated plates.

3. The steel-concrete corrugated steel structure as described in claim 2, characterized in that, The separator also includes a vertical plate, and the two connecting plates are respectively fixedly installed at the upper and lower ends of the vertical plate, with the vertical plate located on the side of the connecting plate away from the second casting cavity.

4. The steel-concrete corrugated steel structure as described in claim 1, characterized in that, The shear member includes a fixed cylinder mounted on the first corrugated plate, the second corrugated plate, or the third corrugated plate, and a shear bar fixedly mounted in the fixed cylinder.

5. The steel-concrete corrugated steel structure as described in claim 4, characterized in that, The inner wall of the fixed cylinder is provided with an internal thread section, and the shear bar is provided with an external thread section that mates with the internal thread section.

6. The steel-concrete corrugated steel structure as described in claim 1, characterized in that, The troughs and crests of the second and third corrugated plates correspond one-to-one with the crests and troughs of the first corrugated plate; the plurality of shear members are respectively installed at the troughs of the first corrugated plate and at the crests of the second and third corrugated plates.

7. The steel-concrete corrugated steel structure as described in claim 1, characterized in that, The first corrugated sheet, the second corrugated sheet, and the third corrugated sheet, as well as the separator and the third corrugated sheet, are all fixedly connected by bolts and nuts; the steel-concrete corrugated steel structure also includes multiple protective structures for protecting the bolts and nuts.

8. The steel-concrete corrugated steel structure as described in claim 7, characterized in that, The protective structure includes a protective sleeve, filler, and sealant. The protective sleeve is fitted onto the connection between the bolt and the nut, and is fixedly connected to the first corrugated plate, the second corrugated plate, or the third corrugated plate. The protective sleeve is filled with the filler, and the sealant is applied to the bolt and the nut.

9. The steel-concrete corrugated steel structure as described in claim 1, characterized in that, The first casting cavity is equipped with a steel mesh.

10. A culvert, characterized in that, Including the steel-concrete corrugated steel structure as described in any one of claims 1-9.

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