Anchoring type double-layer corrugated steel bridge and culvert structure of high fill roadbed

Abstract

The utility model discloses an anchoring type double-layer corrugated steel bridge culvert structure of high fill subgrade relates to steel corrugated pipe plate bridge culvert technical field, anchoring type double-layer corrugated steel bridge culvert structure of high fill subgrade includes: outer layer steel corrugated plate, it includes a plurality of first splicing piece that splices in turn along the axial direction of outer layer steel corrugated plate, and the first splicing piece includes a plurality of steel corrugated plate that splices in turn along the circumference direction of outer layer steel corrugated plate, and the steel corrugated plate of adjacent two spliced is connected through first connecting piece, and the inner layer steel corrugated plate includes a plurality of second splicing piece that splices in turn along the axial direction of inner layer steel corrugated plate, and the second splicing piece includes a plurality of steel corrugated plate that splices in turn along the circumference direction of inner layer steel corrugated plate, and the steel corrugated plate of adjacent two spliced is connected through first connecting piece, and the concrete layer is located between outer layer steel corrugated plate and inner layer steel corrugated plate and pours and set. The device can solve the problem that the single-layer steel corrugated plate bridge culvert of high fill subgrade is weak in bearing capacity, and can not satisfy the maximum stress of structure.

Description

Technical Field

[0001] This utility model relates to the technical field of corrugated steel tube sheet bridges and culverts and tunnel structures, and more specifically, to an anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds. Background Technology

[0002] Highway construction requires a large number of bridges, culverts, and underpasses. Commonly used bridges, culverts, and underpasses are mostly made of brick, stone, or concrete, which are difficult and slow to construct. With the increasing use of steel in recent years, corrugated steel plate bridges, culverts, and underpasses have largely replaced the traditional reinforced concrete structures.

[0003] With the widespread application of corrugated steel sheet bridges and culverts across the country, higher requirements have been placed on their span and embankment height. However, during the design phase, the increased embankment height necessitates a greater thickness for the corrugated steel sheets, especially for high embankments (over 15m in height) and large spans (8m < culvert < 10m, 8m < bridge < 25m). In these cases, the thickness of the corrugated steel sheets often needs to reach over 12mm. However, the maximum thickness achievable with domestic cold-bending steel sheet processing technology is only 12mm, which cannot meet the maximum structural load requirements, thus limiting the application of corrugated steel sheet structures. This highlights the problem of poor strength and stability of corrugated steel sheets in existing technologies.

[0004] In summary, how to solve the problem that the load-bearing capacity of single-layer corrugated steel slab bridges and culverts in high embankment roadbeds is weak and cannot meet the maximum structural stress, especially the large stress on the arch foot of single-layer corrugated steel slab bridges and culverts, which easily leads to structural instability, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds, which can solve the problem that the single-layer corrugated steel plate bridge and culvert has weak load-bearing capacity and cannot meet the maximum stress of the structure, especially the problem that the arch foot of the single-layer corrugated steel plate bridge and culvert is subjected to large stress, which is prone to cause structural instability.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbed includes:

[0008] The outer corrugated steel plate includes a plurality of first splicing members that are sequentially spliced ​​along the axial direction of the outer corrugated steel plate. Each first splicing member includes a plurality of corrugated steel plates that are sequentially spliced ​​along the circumference of the outer corrugated steel plate. Two adjacent spliced ​​corrugated steel plates are connected by a first connector.

[0009] The inner corrugated steel plate includes multiple second splicing members sequentially spliced ​​along the axial direction of the inner corrugated steel plate. Each second splicing member includes multiple corrugated steel plates sequentially spliced ​​along the circumference of the inner corrugated steel plate. Adjacent spliced ​​corrugated steel plates are connected by a first connector. The inner corrugated steel plate is arranged parallel to the inner side of the outer corrugated steel plate. The inner corrugated steel plate and the outer corrugated steel plate are connected end to end, or the two ends of the inner corrugated steel plate and the outer corrugated steel plate are respectively set on a concrete foundation.

[0010] A concrete layer is poured between the outer corrugated steel plate and the inner corrugated steel plate.

[0011] In one embodiment, the first connectors of two adjacent first splicing pieces of the outer corrugated steel plate are staggered.

[0012] In one embodiment, the first connectors of two adjacent second splicing members of the inner corrugated steel plate are staggered.

[0013] In one embodiment, the corrugated steel sheet is provided with a galvanized anti-corrosion layer.

[0014] In one embodiment, a sealing gasket is sandwiched at the joint of two adjacent corrugated steel plates. The connector passes through the corrugated steel plate, the sealing gasket, and the corrugated steel plate in sequence and is connected to the nut. A sealing washer is sandwiched between the nut and the corrugated steel plate.

[0015] In one embodiment, a second connector extends through the outer corrugated steel plate and the inner corrugated steel plate, and a plurality of second connectors are provided at circumferential intervals along the outer corrugated steel plate.

[0016] In one embodiment, one end of the second connector is welded with an end plate, and the other end of the second connector passes through the outer corrugated steel plate, the concrete layer and the inner corrugated steel plate and is then tightened and fixed by the locking nut.

[0017] In one embodiment, the inner corrugated steel plate and the outer corrugated steel plate are connected end to end to form a circular structure or a horseshoe-shaped structure.

[0018] In one embodiment, the inner corrugated steel plate and the outer corrugated steel plate are respectively located at both ends on a concrete foundation to form an arched structure.

[0019] In one embodiment, the concrete foundation is provided with angle steel, the vertical part of the angle steel is connected to the horizontal part of the L-shaped embedded part, and the vertical part of the L-shaped embedded part is connected to the inner corrugated steel plate or the outer corrugated steel plate by connecting bolts.

[0020] When using the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds provided by this utility model, firstly, a support frame is erected at the measured position according to the span of the corrugated steel plate to facilitate the assembly of the corrugated steel plate. When both the inner and outer corrugated steel plates are connected end to end, the corrugated steel plates can be symmetrically assembled from the bottom along both sides of the outer corrugated steel plate. A crane is used to lift the individual corrugated steel plates to the corresponding positions, and the steel plates are manually spliced ​​together using the first connector to form individual first splicing pieces. Multiple first splicing pieces (ring structure) are then sequentially spliced ​​along the axial direction of the outer corrugated steel plate through the first connector until the outer corrugated steel plate is assembled to the required length, forming a closed outer corrugated steel plate. Afterwards, the inner corrugated steel plate (ring structure) can be assembled in the same way. A crane is used to lift the single corrugated steel plate to the corresponding position, and the steel corrugated plates are spliced ​​together manually using the first connector to form individual second splicing pieces. Multiple second splicing pieces (ring structure) are then spliced ​​together sequentially along the axial direction of the inner corrugated steel plate through the first connector.

[0021] When the inner and outer corrugated steel sheets are positioned on concrete foundations at both ends, the outer corrugated steel sheets are symmetrically assembled on both sides, starting from the concrete foundations. A crane is used to lift individual corrugated steel sheets to their designated positions, and then manual assembly using first connectors forms individual first splices (arched structures) until the outer corrugated steel sheets reach the required length, forming a closed outer corrugated steel sheet. Subsequently, the inner corrugated steel sheets (arched structures) can be assembled using the same method. A crane is used to lift individual corrugated steel sheets to their designated positions, and then manual assembly using first connectors forms individual second splices. Multiple second splices (arched structures) are then sequentially assembled along the axial direction of the inner corrugated steel sheets using the first connectors.

[0022] Subsequently, foamed concrete is poured between the outer and inner corrugated steel sheets through the delivery pipe of a concrete pump truck. Simultaneously, vibratory equipment is used to compact the foamed concrete, ensuring it is dense and firm. This creates a stable concrete layer between the outer and inner corrugated steel sheets, forming a reinforced and stable structure. After the foamed concrete is poured, it undergoes standard curing and is tested and analyzed using specialized instruments to determine if it meets the required strength. Finally, a waterproof layer is applied to the intact outer corrugated steel sheet and concrete structure. Only after the waterproof layer has dried can the upper backfill be carried out, and the next construction step can proceed accordingly.

[0023] This application employs curved corrugated steel plates connected and assembled to form a double-layer corrugated steel structure. Due to the presence of axial and longitudinal corrugations in the double-layer corrugated steel structure, the load-bearing area can be increased under vehicle loads. Simultaneously, both the outer and inner corrugated steel plates form an arched load-bearing structure with the surrounding soil, resulting in more even load distribution. Compared to reinforced concrete bridges and culverts, this application offers advantages such as lower structural cost, convenient transportation, simpler construction, shorter construction period, and better adaptability to deformation. Furthermore, subsequent maintenance is simple and easy to operate, saving maintenance costs and demonstrating broad application prospects.

[0024] In summary, the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds provided by this utility model can solve the problem that the single-layer corrugated steel plate bridge and culvert has weak load-bearing capacity and cannot meet the maximum stress of the structure, especially the problem that the arch foot of the single-layer corrugated steel plate bridge and culvert is subjected to large stress, which is prone to cause structural instability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A schematic diagram of the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbed provided by this utility model when it is a circular structure;

[0027] Figure 2 A schematic diagram of a horseshoe-shaped anchored double-layer corrugated steel bridge culvert structure for a high embankment roadbed.

[0028] Figure 3 A schematic diagram of an anchored double-layer corrugated steel bridge culvert structure with an arched structure for a high embankment roadbed.

[0029] Figure 4 for Figure 3 A schematic diagram showing the connection between the inner corrugated steel plate and the concrete foundation.

[0030] Figure 5 A schematic diagram of the longitudinal staggered joint splicing of an anchored double-layer corrugated steel bridge and culvert structure for a high embankment roadbed;

[0031] Figure 6 A schematic diagram of the structure connecting the outer corrugated steel plate and the inner corrugated steel plate with a connector;

[0032] Figure 7 A magnified view of the connector details;

[0033] Figure 8This is a structural schematic diagram of an L-shaped embedded part.

[0034] Figures 1-8 middle:

[0035] 1 is the outer corrugated steel plate, 2 is the inner corrugated steel plate, 3 is the concrete layer, 4 is the first connector, 5 is the end plate, 6 is the corrugated steel plate, 7 is the sealing gasket, 8 is the sealing washer, 9 is the nut, 10 is the concrete foundation, 11 is the angle steel, 12 is the L-shaped embedded part, 13 is the connecting bolt, and 14 is the second connector. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] The core of this utility model is to provide an anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds, which can solve the problem that the single-layer corrugated steel plate bridge and culvert has weak load-bearing capacity and cannot meet the maximum stress of the structure, especially the problem that the arch foot of the single-layer corrugated steel plate bridge and culvert is subjected to large stress, which is prone to structural instability.

[0038] Please refer to Figures 1 to 3 This specific embodiment provides an anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds, including:

[0039] The outer corrugated steel plate 1 includes a plurality of first splicing members that are sequentially spliced ​​along the axial direction of the outer corrugated steel plate 1. Each first splicing member includes a plurality of corrugated steel plates 6 that are sequentially spliced ​​along the circumferential direction of the outer corrugated steel plate 1. Two adjacent spliced ​​corrugated steel plates 6 are connected by a first connector 4.

[0040] The inner corrugated steel plate 2 includes multiple second splicing components that are sequentially spliced ​​along the axial direction of the inner corrugated steel plate 2. Each second splicing component includes multiple corrugated steel plates 6 that are sequentially spliced ​​along the circumference of the inner corrugated steel plate 2. Two adjacent spliced ​​corrugated steel plates 6 are connected by a first connector 4. The inner corrugated steel plate 2 is arranged parallel to the inner side of the outer corrugated steel plate 1. The inner corrugated steel plate 2 and the outer corrugated steel plate 1 are connected end to end, or the two ends of the inner corrugated steel plate 2 and the outer corrugated steel plate 1 are respectively set on the concrete foundation 10.

[0041] Concrete layer 3 is poured between the outer corrugated steel plate 1 and the inner corrugated steel plate 2.

[0042] In practical applications, the shape, structure, size, material, and number of the outer corrugated steel plate 1, inner corrugated steel plate 2, first splicing component, second splicing component, corrugated steel plate 6, and first connecting component 4 can be determined according to the actual situation and needs.

[0043] When using the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbed provided by this utility model, firstly, a support frame is erected at the measured position according to the span of the corrugated steel plate 6 to facilitate the assembly of the corrugated steel plate 6. When the inner corrugated steel plate 2 and the outer corrugated steel plate 1 are connected end to end, the corrugated steel plate 6 can be symmetrically assembled from the bottom along both sides of the outer corrugated steel plate 1. A crane is used to lift the individual corrugated steel plate 6 to the corresponding position, and the first connector 4 is used manually to splice the corrugated steel plate 6 into individual first splicing pieces. Multiple first splicing pieces (ring structure) are then spliced ​​sequentially along the axial direction of the outer corrugated steel plate 1 through the first connector 4 until the outer corrugated steel plate 1 is assembled to the required length, forming a closed outer corrugated steel plate 1. Afterwards, the inner corrugated steel plate 2 (ring structure) can be assembled in the same way. A crane is used to lift the single corrugated steel plate 6 to the corresponding position. The first connector 4 is used manually to splice the corrugated steel plate 6 into individual second splicing parts. Multiple second splicing parts (ring structure) are spliced ​​sequentially along the axial direction of the inner corrugated steel plate 2 through the first connector 4.

[0044] When the inner corrugated steel plate 2 and the outer corrugated steel plate 1 are respectively positioned on the concrete foundation 10, the outer corrugated steel plate 1 is symmetrically assembled on both sides, starting from the concrete foundation 10. A crane is used to lift individual corrugated steel plates 6 to their respective positions, and the first connector 4 is used manually to splice the corrugated steel plates 6 into individual first splicing pieces (arched structures) until the outer corrugated steel plate 1 is assembled to the required length, forming a closed outer corrugated steel plate 1. Subsequently, the inner corrugated steel plate 2 (arched structure) can be assembled in the same way. A crane is used to lift individual corrugated steel plates 6 to their respective positions, and the first connector 4 is used manually to splice the corrugated steel plates 6 into individual second splicing pieces. Multiple second splicing pieces (arched structures) are then sequentially spliced ​​along the axial direction of the inner corrugated steel plate 2 through the first connector 4.

[0045] Subsequently, foamed concrete is poured between the outer corrugated steel plate 1 and the inner corrugated steel plate 2 through the delivery pipe of the concrete pump truck. Simultaneously, a vibrating device is used to compact the foamed concrete, ensuring it is dense and firm. This forms a stable concrete layer 3 between the outer and inner corrugated steel plates 1 and 2, creating a reinforced and stable structure. After the foamed concrete is poured, it undergoes standard curing and is tested and analyzed using specialized instruments to determine if it meets the required strength. Finally, a waterproof layer is applied to the intact outer corrugated steel plate 1 and the concrete structure. The top layer of soil can only be backfilled after the waterproof layer has dried, and the next construction step can then proceed.

[0046] This application employs curved corrugated steel plates 6 connected and assembled to form a double-layer corrugated steel structure. Due to the presence of axial and longitudinal corrugations in the double-layer corrugated steel structure, the load-bearing area can be expanded under vehicle loads. Simultaneously, both the outer corrugated steel plate 1 and the inner corrugated steel plate 2 form an arched load-bearing structure with the surrounding soil, resulting in more even load distribution. Compared to reinforced concrete bridges and culverts, this application offers advantages such as lower structural cost, convenient transportation, simple construction, shorter construction period, and better adaptability to deformation. Furthermore, subsequent maintenance is simple and easy to operate, saving maintenance costs and demonstrating broad application prospects.

[0047] In summary, the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds provided by this utility model can solve the problem that the single-layer corrugated steel plate bridge and culvert has weak load-bearing capacity and cannot meet the maximum stress of the structure, especially the problem that the arch foot of the single-layer corrugated steel plate bridge and culvert is subjected to large stress, which is prone to cause structural instability.

[0048] In one embodiment, such as Figure 5 As shown, the first connectors 4 of two adjacent first splices of the outer corrugated steel plate 1 are staggered, and the first connectors 4 of two adjacent second splices of the inner corrugated steel plate 2 are also staggered. The first connectors 4 can be set as high-strength long bolts. Furthermore, staggering the first connectors 4 of adjacent first splices and adjacent second splices helps improve the structural stability of the outer corrugated steel plate 1 and the inner corrugated steel plate 2, and prevents the first connectors 4 of adjacent splices from being easily detached due to their aligned distribution.

[0049] In one embodiment, the corrugated steel sheet 6 is provided with a galvanized anti-corrosion layer. This galvanized anti-corrosion layer refers to a layer of zinc plated onto the metal surface to increase the metal's corrosion resistance. Galvanizing can be achieved through methods such as hot-dip galvanizing, electro-galvanizing, and hot-dip galvanizing. Its main component is zinc. When in contact with the atmosphere or other corrosive media, zinc reacts chemically with the corrosive media to form a dense zinc oxide protective film. This galvanized anti-corrosion layer has excellent corrosion resistance and can prevent oxygen, water, and other corrosive substances from further eroding the metal substrate (i.e., the corrugated steel sheet 6).

[0050] In one embodiment, such as Figure 7 As shown, a sealing gasket 7 is sandwiched between the joints of two adjacent corrugated steel plates 6. The first connecting piece 4 passes through the corrugated steel plate 6, the sealing gasket 7, and the corrugated steel plate 6 in sequence before connecting to the nut 9. A sealing washer 8 is sandwiched between the nut 9 and the corrugated steel plate 6. Therefore, when it is necessary to connect two adjacent corrugated steel plates 6 through the first connecting piece 4, firstly, a sealing gasket 7 is placed between the two adjacent corrugated steel plates 6. Then, a high-strength bolt passes through the corrugated steel plate 6, the sealing gasket 7, the corrugated steel plate 6, and the sealing washer 8 in sequence before connecting to the nut 9, ensuring a sealed connection at the joint of the two adjacent corrugated steel plates 6. Of course, in actual application, other sealing connection methods can be selected to seal the joint of the corrugated steel plates 6 according to the actual situation and needs.

[0051] It should be noted that a certain torque should be maintained when tightening the nut 9. The tightening torque is generally 270 N·m to 410 N·m. If the torque is too small, the nut 9 will not be tightened, and if the torque is too large, stripping of the threads is likely to occur. After the assembly of the corrugated steel plate 6 is completed, 3% of the total number of bolts (i.e., the first connecting piece 4) should be randomly selected at both the longitudinal (connection of adjacent splices) and transverse (connection of the same splice) joints, and checked with a torque meter. If the number of bolts exceeding the pre-tightening torque range is greater than 10% of the number of bolts checked, all bolts must be retightened.

[0052] In one embodiment, the second connector 14 penetrates and connects the outer corrugated steel plate 1 and the inner corrugated steel plate 2, and multiple second connectors 14 are spaced apart circumferentially along the outer corrugated steel plate 1. For example, the second connectors 14 can be configured as high-strength, long bolt structures. Since the second connectors 14 need to penetrate the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2, the length of the second connectors 14 is much greater than that of the first connectors 4.

[0053] In one embodiment, such as Figure 6 As shown, one end of the second connector 14 is welded with an end plate 5, and the other end of the second connector 14 passes through the outer corrugated steel plate 1, the concrete layer 3 and the inner corrugated steel plate 2 and is then tightened and fixed by a lock nut.

[0054] It should be noted that, in order to address the problem that the load-bearing capacity of single-layer corrugated steel plate bridges and culverts in high-fill roadbeds is weak and cannot meet the maximum structural stress, especially the large stress on the arch foot of single-layer corrugated steel plate bridges and culverts, which easily leads to structural instability, this application provides a combined structure of double-layer corrugated plates and T-shaped anchor rods (i.e., the second connector 14) for high-fill or large-span corrugated steel plate bridges, culverts and passages, solving the problem of poor strength and stability of the corrugated steel plate 6 in the prior art.

[0055] It should also be noted that when manufacturing the second connector 14, firstly, the T-shaped anchor rod is processed in the factory. Then, the end plate 5 is welded to the T-shaped anchor rod. After that, the end plate 5 of the T-shaped anchor rod is facing upwards, and the other end of the T-shaped anchor rod is inserted into the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2 as required. Finally, the T-shaped anchor rod is tightened with a nut (or a tightening nut) to ensure that the second connector 14 effectively fixes the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2, which helps to improve the structural stability of the device.

[0056] In one embodiment, such as Figure 1 and Figure 2 As shown, the inner corrugated steel plate 2 and the outer corrugated steel plate 1 are connected end to end to form a circular structure or a horseshoe-shaped structure. Of course, in addition to setting the inner corrugated steel plate 2 and the outer corrugated steel plate 1 as a circular structure (i.e., a ring structure) or a horseshoe-shaped structure with the ends connected, the inner corrugated steel plate 2 and the outer corrugated steel plate 1 can also be set as an elliptical structure or other irregular ring structure with the ends connected.

[0057] It should be noted that both the circular and horseshoe-shaped structures are assembled symmetrically with corrugated steel plates 6 from the bottom of the outer corrugated steel plate 1 along both sides of the outer corrugated steel plate 1. A crane is used to lift the individual corrugated steel plates 6 to the corresponding positions, and the steel plates 6 are spliced ​​together manually using the first connecting piece 4 (such as high-strength bolts) to form an arched structure. They are then assembled sequentially along the stepped axis of the outer corrugated steel plate 1 (i.e., the first connecting pieces 4 of adjacent splicing pieces are staggered) to the required length, finally forming the outer corrugated steel plate structure 1 with the first and last pieces connected (closed).

[0058] Afterwards, the inner corrugated steel plate 2 (circular or horseshoe-shaped) can be assembled in the same way. A crane is used to lift the single corrugated steel plate 6 to the corresponding position. The corrugated steel plate 6 is symmetrically assembled from the bottom of the inner corrugated steel plate 2 along both sides of the inner corrugated steel plate 2. A crane is used to lift the single corrugated steel plate 6 to the corresponding position. The first connecting piece 4 (such as bolts) is used manually to splice the corrugated steel plate 6 to form an arch structure. The first connecting piece 4 of the adjacent splicing pieces is staggered and then assembled along the stepped axis of the inner corrugated steel plate 2 to the required length, finally forming a closed inner corrugated steel plate 2 with the first and last pieces connected.

[0059] Then, foamed concrete is poured between the outer corrugated steel plate 1 and the inner corrugated steel plate 2 through the delivery pipe of the concrete pump truck. At the same time, a vibrating device is used to compact the foamed concrete, making it dense and firm. This forms a stable concrete layer 3 between the outer corrugated steel plate 1 and the inner corrugated steel plate 2, creating a reinforced and stable structure for the device. Finally, an end plate 5 is welded to one end of the second connector 14, and the other end of the second connector 14 passes through the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2, and is then tightened with a lock nut to reinforce the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2.

[0060] In one embodiment, such as Figure 3 As shown, the inner corrugated steel plate 2 and the outer corrugated steel plate 1 are respectively set at both ends of the concrete foundation 10 to form an arch structure. The arch structure starts from the inner concrete foundation 10, and the outer corrugated steel plates 1 are symmetrically assembled on both sides. A crane is used to lift the individual corrugated steel plates to the corresponding positions, and they are manually assembled with bolts (i.e., the first connecting parts 4) to form the arch structure. They are then assembled sequentially along the stepped axis of the outer corrugated steel plate 1 (i.e., the first connecting parts 4 of adjacent splicing parts are staggered) to the required length, finally forming the arch-shaped outer corrugated steel plate 1.

[0061] Afterwards, the inner corrugated steel plate 2 (arch shape) can be assembled in the same way. That is, starting from the inner concrete foundation 10, the inner corrugated steel plate 2 is assembled symmetrically on both sides. A crane is used to lift the single corrugated steel plate 6 to the corresponding position. The steel corrugated plates 6 are spliced ​​together manually using the first connector 4 (such as bolts) to form an arch structure. The steel corrugated plates 6 are then assembled sequentially along the stepped axis of the inner corrugated steel plate 2 (i.e., the first connector 4 of adjacent splicing parts are staggered) to the required length, and finally the arch-shaped inner corrugated steel plate 2 is formed.

[0062] Then, foamed concrete is poured between the outer corrugated steel plate 1 and the inner corrugated steel plate 2 through the delivery pipe of the concrete pump truck. Simultaneously, a vibrating device is used to compact the foamed concrete, making it dense and firm. This results in a stable concrete layer 3 between the outer corrugated steel plate 1 and the inner corrugated steel plate 2, creating a reinforced and stable structure. Finally, an end plate 5 is welded to one end of the second connector 14, and the other end of the second connector 14 passes through the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2, and is then tightened with a lock nut to enhance the structural stability of the outer corrugated steel plate 1, the concrete layer 3, and the inner corrugated steel plate 2.

[0063] It should also be noted that this device adopts an anchored double-layer corrugated steel structure, which can increase the overall stress performance of the corrugated steel plate bridge and culvert, making it suitable for use in high embankment subgrades. Furthermore, it only requires asphalt anti-corrosion coating in the later stages, making maintenance convenient. This device is applicable to corrugated steel plate assembly technology. The second connecting piece 14, which splices the outer corrugated steel plate 1 and the inner corrugated steel plate 2, uses high-strength long bolts (T-type anchor bolts). This device has a simple structure, low cost, and is easy to operate.

[0064] In one embodiment, such as Figure 4 As shown, an angle steel 11 is provided inside the concrete foundation 10. The vertical part of the angle steel 11 is connected to the horizontal part of the L-shaped embedded part 12. The vertical part of the L-shaped embedded part 12 is connected to the inner corrugated steel plate 2 or the outer corrugated steel plate 1 by connecting bolts 13. The outer corrugated steel plate 1 and the inner corrugated steel plate 2 are connected to the concrete foundation 10 through components such as the angle steel 11, the L-shaped embedded part 12 and the connecting bolts 13, so that the outer corrugated steel plate 1 and the inner corrugated steel plate 2 form an arched structure.

[0065] It should be further explained that this device uses double-layer corrugated steel plates connected with high-strength long bolts (i.e., connectors), and finally, concrete is poured to form an integral structure. This saves on the amount of steel reinforcement, prevents the corrugated steel plate 6 from detaching from the concrete structure, and improves overall stability. Furthermore, this device adds anchor bolt support (T-shaped anchor bolts with end plates 5) to the double-layer corrugated steel structure, which is beneficial for uniform stress distribution and improves the load-bearing capacity of the corrugated steel plate 6. Moreover, the combination of the flexible corrugated steel plate 6 and the rigid concrete layer 3 effectively improves the stress requirements of the corrugated steel plate 6 structure, solving the problem of structural instability caused by the inability to achieve the required design thickness for high-fill, large-span corrugated steel plate bridges and culverts due to processing technology limitations. In addition, this device is applicable to corrugated steel plate assembly technology, broadening its applicability. Moreover, this device is factory-manufactured, simple to construct, has a short construction period, and is easy to maintain. Especially in areas with harsh natural environmental conditions, it ensures construction quality and timely completion.

[0066] It should be noted that the first splice and the second splice mentioned in this application are only distinguished by their different positions and do not have any order of precedence.

[0067] In addition, it should be noted that the orientation or positional relationship indicated by terms such as "inside and outside" in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the purpose of simplifying the description and making it easier to understand, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Any combination of all embodiments provided by this utility model is within the protection scope of this utility model and will not be elaborated upon here.

[0069] The above provides a detailed description of the anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds, characterized in that, include: The outer corrugated steel plate (1) includes a plurality of first splicing parts that are sequentially spliced ​​along the axial direction of the outer corrugated steel plate (1). The first splicing parts include a plurality of corrugated steel plates (6) that are sequentially spliced ​​along the circumferential direction of the outer corrugated steel plate (1). Two adjacent spliced ​​corrugated steel plates (6) are connected by a first connector (4). The inner corrugated steel plate (2) includes a plurality of second splicing components that are sequentially spliced ​​along the axial direction of the inner corrugated steel plate (2). The second splicing component includes a plurality of corrugated steel plates (6) that are sequentially spliced ​​along the circumference of the inner corrugated steel plate (2). Two adjacent spliced ​​corrugated steel plates (6) are connected by the first connector (4). The inner corrugated steel plate (2) is arranged parallel to the inner side of the outer corrugated steel plate (1). The inner corrugated steel plate (2) and the outer corrugated steel plate (1) are connected end to end, or the two ends of the inner corrugated steel plate (2) and the outer corrugated steel plate (1) are respectively set on the concrete foundation (10). The concrete layer (3) is poured between the outer corrugated steel plate (1) and the inner corrugated steel plate (2).

2. The anchored double-layer corrugated steel bridge and culvert structure for high embankment roadbeds according to claim 1, characterized in that, The first connectors (4) of the two adjacent first splicing parts of the outer corrugated steel plate (1) are staggered.

3. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to claim 1, characterized in that, The first connectors (4) of two adjacent second splicing parts of the inner corrugated steel plate (2) are staggered.

4. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to claim 1, characterized in that, The corrugated steel plate (6) is provided with a galvanized anti-corrosion layer.

5. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to claim 1, characterized in that, A sealing gasket (7) is provided at the joint of two adjacent corrugated steel plates (6). The first connector (4) passes through the corrugated steel plate (6), the sealing gasket (7) and the corrugated steel plate (6) in sequence and is connected to the nut (9). A sealing washer (8) is provided between the nut (9) and the corrugated steel plate (6).

6. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to any one of claims 1 to 5, characterized in that, The second connector (14) penetrates and connects the outer corrugated steel plate (1) and the inner corrugated steel plate (2), and a plurality of the second connectors (14) are provided at intervals along the circumference of the outer corrugated steel plate (1).

7. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to claim 6, characterized in that, One end of the second connector (14) is welded with an end plate (5), and the other end of the second connector (14) passes through the outer corrugated steel plate (1), the concrete layer (3) and the inner corrugated steel plate (2) and is then tightened and fixed by a lock nut.

8. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to any one of claims 1 to 5, characterized in that, The inner corrugated steel plate (2) and the outer corrugated steel plate (1) are connected end to end to form a circular structure or a horseshoe-shaped structure.

9. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to any one of claims 1 to 5, characterized in that, The inner corrugated steel plate (2) and the outer corrugated steel plate (1) are respectively placed on the concrete foundation (10) to form an arched structure.

10. The anchored double-layer corrugated steel bridge and culvert structure for high embankment subgrade according to claim 9, characterized in that, Angle steel (11) is provided in the concrete foundation (10). The vertical part of the angle steel (11) is connected to the horizontal part of the L-shaped embedded part (12). The vertical part of the L-shaped embedded part (12) is connected to the inner corrugated steel plate (2) or the outer corrugated steel plate (1) by connecting bolts (13).

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