A retaining structure device for culvert extension

Abstract

This utility model relates to the field of railway culvert renovation technology, specifically to a retaining structure device for culvert extension, comprising a first support structure, a second support structure, a third support structure, a first strut, and a second strut. The first and second support structures are both located in the railway subgrade slope behind the herringbone walls on both sides of the culvert; the end of the first support structure closer to the existing railway is connected to the end of the second support structure farther from the herringbone walls; the third support structure is located at the toe of the railway subgrade slope, away from the existing railway; both ends of the first strut are connected to the first support structures located on both sides of the culvert; both ends of the second strut are connected to the second and third support structures, respectively. This application solves the problem in the prior art of lacking a structure that can effectively perform the retaining function in culvert extension construction scenarios.

Description

Technical Field

[0001] This utility model relates to the field of railway culvert renovation technology, and in particular to a retaining structure device for culvert extension. Background Technology

[0002] When widening or renovating existing railways, if a culvert exists beneath the railway, it is usually necessary to extend or modify the culvert. Extending a culvert requires first removing the sloping walls on both sides of the culvert to expose the reinforcing steel bars within the original walls, followed by the binding of the extended steel bars and the construction of formwork. However, after the sloping walls are removed, the railway embankment slope behind them loses crucial support, potentially leading to landslides and collapses, thus affecting the safety of the operating railway. Currently, there is no existing technology that can effectively retain soil in culvert extension construction scenarios; therefore, it is necessary to develop a retaining structure suitable for culvert extension construction. Utility Model Content

[0003] The purpose of this utility model is to overcome the problem that there is no existing structure that can be applied to the construction of culvert extension and effectively play the role of retaining soil, and to provide a retaining structure device for culvert extension.

[0004] This utility model provides a retaining structure device for culvert extension, comprising:

[0005] The first support structure and the second support structure are both located in the railway subgrade slope behind the herringbone walls on both sides of the culvert. The first support structure is parallel to the herringbone wall on the same side of the culvert, and the second support structure is parallel to the length direction of the existing railway. The end of the first support structure closer to the existing railway is connected to the end of the second support structure farther away from the herringbone wall.

[0006] The third support structure is located on the side of the railway subgrade slope away from the existing railway at the toe of the slope.

[0007] The first strut, with its two ends connected to the first support structure located on both sides of the culvert;

[0008] The second strut has its two ends connected to the second support structure and the third support structure, respectively.

[0009] This utility model provides a retaining structure device for extending culverts. Both the first and second support structures are located on the railway embankment slope behind the herringbone walls on both sides of the culvert. This device is used to resist the earth pressure from the railway embankment slope after the herringbone walls are demolished, preventing instability and collapse of the railway embankment slope. The first support structure is parallel to the herringbone wall on the same side of the culvert, while the second support structure is parallel to the length direction of the existing railway. The end of the first support structure closer to the existing railway is connected to the end of the second support structure farther from the herringbone wall. This design facilitates better resistance to earth pressure from behind the herringbone wall and from the herringbone wall towards the existing railway. The two ends of the first strut are connected to the first support structures on both sides of the culvert. This connection forms an integral frame, allowing the first support structures on both sides of the culvert to support each other and share the load, thus better resisting the earth pressure from the railway embankment slope. The two ends of the second strut are connected to the second support structure and the third support structure, respectively. The purpose of this is to transmit the soil pressure borne by the second support structure to the third support structure through the second strut, thereby enhancing the ability of the second support structure to resist soil pressure with the help of the third support structure.

[0010] This invention utilizes the coordinated action of the first, second, and third support structures to jointly bear and resist the earth pressure behind the herringbone wall. This effectively reduces the risk of landslides and collapses on the railway subgrade slope, thereby ensuring the safe and stable operation of the railway. This design solves the problem in existing technologies of lacking an effective retaining structure for culvert extension construction scenarios.

[0011] Both the first strut and the second strut can be precast concrete components or steel structure components.

[0012] Preferably, the first support structure includes a first capping beam and a first pile foundation; the second support structure includes a second capping beam and a second pile foundation; and the third support structure includes a third capping beam and a third pile foundation. The two ends of the first strut are respectively connected to the first capping beams of the first support structures located on both sides of the culvert; the two ends of the second strut are respectively connected to the second capping beam and the third capping beam. In this design, the first capping beam connects the first pile foundations into a whole, enhancing the integrity and stability of the first pile foundation group. The second capping beam connects the second pile foundations into a whole, enhancing the integrity and stability of the second pile foundation group. The third capping beam connects the third pile foundations into a whole, enhancing the integrity and stability of the third pile foundation group.

[0013] The first pile foundation, the second pile foundation and the third pile foundation can all be precast piles, manually excavated piles or cast-in-place piles.

[0014] The third crown beam and the second crown beam can be arranged in parallel or at a certain angle.

[0015] Preferably, both the first pile foundation and the second pile foundation are manually excavated bored piles. Compared with precast piles and cast-in-place piles, this scheme using manually excavated bored piles can avoid the adverse effects on the existing railway caused by the use of large mechanical equipment.

[0016] Preferably, the bottom of the manually excavated bored pile is 0.2m-0.5m above the groundwater level. If the pile bottom is below the groundwater level, groundwater dewatering measures need to be taken in the area. However, implementing groundwater dewatering measures may adversely affect the existing railway. Therefore, to avoid the potential risks associated with dewatering measures, this solution specifies that the bottom of the manually excavated bored pile is 0.2m-0.5m above the groundwater level.

[0017] Preferably, the third crown beam is parallel to the second crown beam.

[0018] Preferably, the height of the third capping beam is lower than that of the second capping beam. This design allows the third capping beam to be closer to the ground, thereby shortening the length of the free end of the third pile foundation exposed above the ground. In this way, the third capping beam and the third pile foundation can provide more stable support for the second support structure, effectively reducing the displacement of the second support structure.

[0019] Preferably, the third pile foundation is a cast-in-place pile. Compared to manually excavated piles, cast-in-place piles have higher construction efficiency and are not limited by groundwater levels during construction. Compared to precast piles, the vibrations generated during the construction of cast-in-place piles have less impact on the existing railway; at the same time, cast-in-place piles can be driven into deeper soil layers, thereby providing better bearing capacity.

[0020] Preferably, both the first and second struts are steel structure supports. Compared to the struts of precast concrete components, the steel structure supports are more convenient and faster during construction, hoisting, and connection.

[0021] The steel structure support can be in the form of a tubular structure or a lattice structure.

[0022] Preferably, both ends of the first support rod and both ends of the second support rod are provided with flanges. These flanges enable quick connection of the first and second support rods to their corresponding components.

[0023] Preferably, when there are multiple first struts, a first connecting rod is provided between two adjacent first struts; when there are multiple second struts located on the same side of the culvert, a second connecting rod is provided between two adjacent second struts. The first connecting rod enhances the stability of the first strut and improves its compressive bearing capacity. The second connecting rod enhances the stability of the second strut and improves its compressive bearing capacity.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] This invention provides a retaining structure device for culvert extension, which, through the coordinated action of the first, second, and third support structures, jointly bears and resists the earth pressure behind the herringbone wall. This effectively reduces the risk of landslides and collapses on the railway subgrade slope, thereby ensuring the safe and stable operation of the railway. This design solves the problem in the prior art of lacking an effective retaining structure for culvert extension construction. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a platform for a retaining structure device used for culvert extension.

[0027] Figure 2 This is a schematic elevation view of a retaining structure device used for culvert extension.

[0028] Marked in the image:

[0029] 1-Eight-character wall,

[0030] 2-First support structure,

[0031] 201 - First capping beam, 202 - First pile foundation

[0032] 3-Second support structure,

[0033] 301 - Second capping beam, 302 - Second pile foundation

[0034] 4-Third support structure,

[0035] 401 - Third crown beam, 402 - Third pile foundation

[0036] 5-First strut,

[0037] 6-Second strut,

[0038] 7- Existing railways,

[0039] 8-Railway subgrade slope,

[0040] 9-Culvert. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0042] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer" used in the description of specific embodiments of this utility model to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0044] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0045] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0046] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0047] Example 1

[0048] like Figures 1 to 2 As shown, a retaining structure device for extending a culvert includes a first support structure 2, a second support structure 3, a third support structure 4, a first strut 5, and a second strut 6.

[0049] The first support structure 2 and the second support structure 3 are both located in the railway subgrade slope 8 behind the wing wall 1 on both sides of the culvert 9. The first support structure 2 is parallel to the wing wall 1 on the same side of the culvert 9, and the second support structure 3 is parallel to the length direction of the existing railway 7. The end of the first support structure 2 that is closer to the existing railway 7 is connected to the end of the second support structure 3 that is away from the wing wall 1.

[0050] The third support structure 4 is located on the side of the railway subgrade slope 8 away from the existing railway 7 at the toe of the slope. Specifically, the third support structure 4 is 2m-4m away from the toe of the railway subgrade slope 8.

[0051] The two ends of the first strut 5 are connected to the first support structure 2 located on both sides of the culvert 9.

[0052] The two ends of the second strut 6 are connected to the second support structure 3 and the third support structure 4, respectively.

[0053] In an optional embodiment, the first support structure 2 may include a first capping beam 201 and a first pile foundation 202, the second support structure 3 may include a second capping beam 301 and a second pile foundation 302, and the third support structure 4 may include a third capping beam 401 and a third pile foundation 402; the two ends of the first strut 5 are respectively connected to the first capping beam 201 of the first support structure 2 located on both sides of the culvert 9, and the two ends of the second strut 6 are respectively connected to the second capping beam 301 and the third capping beam 401.

[0054] Specifically, the net spacing between two adjacent first pile foundations 202 and the net spacing between two adjacent second pile foundations 302 can be 200mm-300mm, with specific net spacing values ​​of 200mm, 220mm, 250mm, 280mm, and 300mm. The diameter of both the first pile foundation 202 and the second pile foundation 302 can be 1m-1.4m, with specific diameter values ​​of 1m, 1.1m, 1.2m, 1.25m, and 1.3m.

[0055] The net spacing between two adjacent third pile foundations 402 can be 200mm-300mm, specifically 200mm, 220mm, 250mm, 280mm, or 300mm. The diameter of the third pile foundation 402 can be 1m-1.4m, specifically 1m, 1.1m, 1.2m, 1.25m, or 1.3m.

[0056] Specifically, the cross-sections of the first crown beam 201, the second crown beam 301, and the third crown beam 401 can all be 1450mm×800mm, 1550mm×900mm, and 1650mm×1000mm, respectively. The first crown beam 201, the second crown beam 301, and the third crown beam 401 are all arranged horizontally.

[0057] In an optional implementation, both the first pile foundation 202 and the second pile foundation 302 can be manually excavated bored piles.

[0058] In an optional embodiment, the bottom of the manually excavated bored pile is 0.2m-0.5m above the groundwater level, specifically 0.2m, 0.3m, 0.4m, or 0.5m.

[0059] In an optional embodiment, the third crown beam 401 may be parallel to the second crown beam 301. Specifically, the length direction of the third crown beam 401 may be parallel to the length direction of the second crown beam 301.

[0060] In an optional embodiment, the height of the third cap beam 401 can be lower than the height of the second cap beam 301. Specifically, the distance between the bottom surface of the third cap beam 401 and the toe of the railway subgrade slope 8 is 200mm-1000mm, and the specific distance can be 200mm, 300mm, 400mm, 500mm, 600mm, 800mm, or 1000mm.

[0061] In an optional implementation, the third pile foundation 402 may be a cast-in-place pile.

[0062] In an optional embodiment, both the first strut 5 and the second strut 6 can be steel structure supports.

[0063] In an optional embodiment, flanges may be provided at both ends of the first support rod 5 and both ends of the second support rod 6. Specifically, flanges are provided at corresponding positions of the first crown beam 201, the second crown beam 301, and the third crown beam 401. The first support rod 5 is connected to the first crown beam 201 via flanges, and the second support rod 6 is also connected to the second crown beam 301 and the third crown beam 401 via flanges respectively.

[0064] In an optional embodiment, when multiple first support rods 5 are provided, a first connecting rod can be provided between two adjacent first support rods 5; when multiple second support rods 6 are provided on the same side of the culvert 9, a second connecting rod can be provided between two adjacent second support rods 6. Specifically, both the first and second connecting rods can be steel structures, such as steel pipes, I-beams, or channel steel. The first connecting rod can be perpendicularly connected to the first support rod 5 or obliquely connected to the first support rod 5. The second connecting rod can be perpendicularly connected to the second support rod 6 or obliquely connected to the second support rod 6. The first and second connecting rods are not shown in the figure.

[0065] In an optional embodiment, the first capping beam 201, the second capping beam 301, and the third capping beam 401 can all be reinforced concrete structures. The concrete strength grade in the reinforced concrete structure can be C30, C35, or C40. Compared to steel box girders, this solution uses the reinforced concrete structure as the capping beam, which has lower material costs. Furthermore, the concrete structure can be cast integrally, reducing joints and connection points, and improving the overall integrity and stability of the structure.

[0066] In an optional embodiment, the steel structure support can be a round steel pipe with a diameter of 400mm-500mm, specifically 400mm, 420mm, 440mm, 450mm, 460mm, 480mm, or 500mm. The wall thickness of the round steel pipe can be 8mm-12mm, specifically 8mm, 9mm, 10mm, or 12mm. Compared to a lattice-type steel structure support, the round steel pipe support structure is simpler and easier to manufacture.

[0067] The above description is only a preferred embodiment of the present utility model and is 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 retaining structure device for culvert lengthening, characterized by, include: The first support structure (2) and the second support structure (3) are both located in the railway subgrade slope (8) behind the herringbone wall (1) on both sides of the culvert (9). The first support structure (2) is parallel to the herringbone wall (1) on the same side of the culvert (9), and the second support structure (3) is parallel to the length direction of the existing railway (7). The end of the first support structure (2) close to the existing railway (7) is connected to the end of the second support structure (3) away from the herringbone wall (1). The third support structure (4) is located on the side of the railway subgrade slope (8) away from the existing railway (7); The first strut (5) has two ends connected to the first support structure (2) located on both sides of the culvert (9); The second support rod (6) is connected at both ends to the second support structure (3) and the third support structure (4), respectively.

2. The soil retaining structure device for culvert extension according to claim 1, wherein The first support structure (2) includes a first cap beam (201) and a first pile foundation (202), the second support structure (3) includes a second cap beam (301) and a second pile foundation (302), and the third support structure (4) includes a third cap beam (401) and a third pile foundation (402); the two ends of the first strut (5) are respectively connected to the first cap beam (201) of the first support structure (2) located on both sides of the culvert (9), and the two ends of the second strut (6) are respectively connected to the second cap beam (301) and the third cap beam (401).

3. The soil retaining structure device for culvert extension according to claim 2, wherein Both the first pile foundation (202) and the second pile foundation (302) are manually excavated bored piles.

4. The soil retaining structure device for culvert extension according to claim 3, wherein The bottom of the manually excavated bored pile is 0.2m-0.5m above the groundwater level.

5. The soil retaining structure device for culvert extension of claim 2, wherein, The third crown beam (401) is parallel to the second crown beam (301).

6. The soil retaining structure device for culvert extension according to claim 5, wherein The height of the third crown beam (401) is lower than the height of the second crown beam (301).

7. The soil retaining structure of claim 2, wherein, The third pile foundation (402) is a cast-in-place pile.

8. The soil retaining structure of any one of claims 1 to 7, wherein, Both the first strut (5) and the second strut (6) are steel structure supports.

9. The soil retaining structure of claim 8, wherein, Flanges are provided at both ends of the first support rod (5) and both ends of the second support rod (6).

10. The soil retaining structure of claim 8, wherein, When there are multiple first support rods (5), a first connecting rod is provided between two adjacent first support rods (5); when there are multiple second support rods (6) located on the same side of the culvert (9), a second connecting rod is provided between two adjacent second support rods (6).

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