A gate structure for the outlet of a box culvert in an urban canal
By combining the U-shaped channel structure with the gate control room, the contradiction between opening and closing efficiency and safety, as well as the problem of siltation in traditional gate structures, is solved, achieving efficient and safe water flow control and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN MUNICIPAL ENG DESIGN & RES INST
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional gate structures suffer from a tradeoff between opening and closing efficiency and safety, and frequent siltation leads to gate failure, making it difficult to balance safety, stability, and ease of maintenance.
Design a gate structure that includes a U-shaped channel structure, a gate chamber structure, a gate control room, and an outlet protection layer. The U-shaped channel structure is connected to the existing box culvert to form a complementary structure. The gate control room facilitates water level observation and control, and is set up to facilitate inspection and maintenance and avoid siltation.
It achieves improved opening and closing efficiency and safety while ensuring current carrying capacity, avoids siltation, has a simple and safe structure, is easy to maintain and operate, and has good stability.
Smart Images
Figure CN224451535U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urban channel drainage, and in particular to a gate structure for the outlet of a box culvert in an urban channel. Background Technology
[0002] With urban development, urban canals are playing an increasingly important role in cities. As core facilities of integrated water conservancy and municipal engineering, urban canals control water flow through gates and culvert structures, enabling rapid flood discharge during rainstorms and reducing the risk of urban flooding. They also allow for precise allocation of water resources to meet urban water supply and drainage needs. Furthermore, urban canals serve as public spaces that combine practical value with aesthetic appeal, offering significant landscape benefits. Gates, as core control facilities in urban water systems, play a multi-dimensional role in urban canals by precisely regulating water flow, ensuring safety, and optimizing resource allocation. However, traditional gate structures suffer from a trade-off between opening and closing efficiency and safety, and frequent siltation leads to gate failure, making it difficult to balance safety, stability, and ease of maintenance. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a gate structure for the outlet of a box culvert in an urban channel, addressing the shortcomings of the prior art.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A gate structure for the outlet of a box culvert in an urban channel includes an open U-shaped channel structure, a gate chamber structure, a gate control chamber, and an outlet protection bottom. The U-shaped channel structure is set at the downstream end of the existing box culvert and connected to the existing box culvert. The downstream end of the U-shaped channel structure is connected to the gate chamber structure. The downstream end of the gate chamber structure is provided with the outlet protection bottom. The gate control chamber is arranged adjacent to the gate chamber structure on one side along the direction perpendicular to the water flow, and the gate control chamber can control the flow rate of the water in the gate chamber structure.
[0005] The beneficial effects of this utility model are as follows: The gate structure for the outlet of a box culvert in an urban channel, through the U-shaped channel structure with an open structure, can complement the existing closed box culvert. While ensuring the flow capacity, the U-shaped channel structure allows for direct observation of the water level, facilitating control of the gate chamber structure through the gate control room, thereby controlling the water flow and water level. The structure balances opening and closing efficiency and safety. The separate gate control room facilitates inspection, operation, and maintenance. The structure has no grooves or other areas, preventing siltation that could lead to gate failure. The overall structure is simple, safe, and controllable, effectively controlling the impact on the stability of the channel bank and bottom.
[0006] Based on the above technical solution, the present invention can be further improved as follows:
[0007] Furthermore, a first expansion joint is provided between the end of the U-shaped channel structure near the existing box culvert and the existing box culvert.
[0008] The beneficial effect of the above-mentioned further solution is that by setting the first deformation joint, the connection stability between the U-shaped channel structure and the existing box culvert can be improved, ensuring the safety and durability of the connection between the two.
[0009] Further: The U-shaped channel structure includes U-shaped channel sidewalls and a U-shaped channel bottom plate. One end of the U-shaped channel sidewalls on both sides is connected to the corresponding sidewalls on both sides of the existing box culvert, and the other end of the U-shaped channel sidewalls on both sides is connected to the corresponding sidewalls on both sides of the gate chamber structure. The bottom of the U-shaped channel sidewalls is connected to the corresponding side of the U-shaped channel bottom plate, and both ends of the U-shaped channel bottom plate are connected to the bottom plate of the existing box culvert and the bottom plate of the gate chamber structure, respectively.
[0010] The beneficial effects of the above-mentioned further scheme are: by setting the side wall and bottom plate of the U-shaped channel, it is convenient to connect with the existing box culvert and gate chamber structure respectively, which can complement the closed existing box culvert, ensure the flow capacity, and form an open structure, which allows for intuitive observation of the water level and facilitates control of water flow and water level.
[0011] Further: the height of the U-shaped channel sidewall gradually changes from one end near the existing box culvert to the other end, and the thickness of the U-shaped channel sidewall is not less than 250mm, and the thickness of the U-shaped channel bottom plate is not less than 1 / 8 of its span.
[0012] The beneficial effects of the above-mentioned further solutions are: by gradually setting the height of the U-shaped channel sidewall from one end close to the existing box culvert to the other end, it is possible to facilitate the integrity of the connection between the existing box culvert and the gate chamber structure, bear the water and soil pressure from the outside, and at the same time, by controlling the thickness of the U-shaped channel sidewall and the U-shaped channel bottom plate, the stability of the entire U-shaped channel structure can be guaranteed.
[0013] Further: The gate chamber structure includes a gate, a tenon, a gate chamber side wall, a central partition wall, a connecting wall, and a gate chamber bottom plate. The gate chamber bottom plate is located at the bottom of the U-shaped channel structure on the side with the water flow. The connecting wall is located between the U-shaped channel bottom plate and the gate chamber bottom plate, and both ends of the connecting wall are respectively connected to the U-shaped channel bottom plate and the gate chamber bottom plate. The gate chamber side wall and the central partition wall are respectively located at both ends of the gate chamber bottom plate and are correspondingly connected to both ends of the gate chamber bottom plate. The gate chamber side wall and the central partition wall are respectively correspondingly connected to the U-shaped channel side walls on both sides of the U-shaped channel structure. The gate control chamber is adjacent to one side of the central partition wall. The tenon is located on the gate chamber bottom plate. The gate is rotatably mounted on the tenon. One end of the gate is embedded in the gate chamber side wall, and the other end passes through the central partition wall and extends into the gate control chamber. The gate hydraulic equipment in the gate control chamber is connected to the other end of the gate and can drive the gate to rotate.
[0014] The beneficial effects of the above-mentioned further solution are as follows: by setting the tenon, a force-bearing fulcrum can be provided for the gate. At the same time, the gate hydraulic equipment in the gate control room is connected to the other end of the gate, so that the gate can be driven to rotate to adjust the water flow and water level in the gate chamber structure. Meanwhile, the connecting wall serves to connect the U-shaped groove bottom plate and the gate chamber bottom plate, and the partition wall serves to isolate the gate chamber structure from the gate control room.
[0015] Furthermore, the gate chamber structure also includes a water-retaining weir, which is located at the end of the gate chamber bottom plate away from the U-shaped channel structure and is connected to the outlet bottom protection.
[0016] The beneficial effect of the above-mentioned further solution is that by setting up the water-retaining weir, the water overflows after the water flows through the gate, thereby controlling the outflow velocity and reducing the impact on the channel.
[0017] Furthermore, a second deformation joint is provided between the water-retaining weir and the water outlet bottom protection.
[0018] The beneficial effect of the above-mentioned further solution is that by setting the second deformation joint, the connection stability between the water-retaining weir and the water outlet bottom protection can be improved, ensuring the safety and durability of the connection between the two.
[0019] Further: The gate control room includes a gate control room side wall, a gate control room floor plate, and a gate control room top plate. The gate control room floor plate is located at the bottom of one side of the gate chamber structure. The gate control room side wall and the central partition wall are respectively located on both sides of the gate control room floor plate, and the gate control room side wall and the central partition wall are respectively connected to the gate control room floor plate. The gate control room top plate is located between the top of the control room side wall and the central partition wall.
[0020] The beneficial effect of the above-mentioned further solution is that by setting up the control room side wall, the gate control room bottom plate and the gate control room top plate, together with the middle partition wall, a closed space is formed, which facilitates the isolation and protection of the gate hydraulic equipment.
[0021] Furthermore, an inspection hole is provided on the top plate of the gate control room.
[0022] The beneficial effect of the above-mentioned further solutions is that by setting up inspection holes, maintenance personnel can easily enter and exit, thus improving the convenience of maintenance.
[0023] Furthermore, the water outlet bottom protection is made of plain concrete or masonry blocks.
[0024] The beneficial effects of the above-mentioned further solutions are: plain concrete or masonry blocks are readily available and inexpensive, and have good structural strength and good resistance to water erosion. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the planar structure of a gate structure for the outlet of a box culvert in an urban channel, according to an embodiment of the present invention.
[0026] Figure 2 This utility model Figure 1 A schematic diagram of the AA cross-sectional structure;
[0027] Figure 3 This utility model Figure 1 A schematic diagram of the BB cross-sectional structure;
[0028] Figure 4 This utility model Figure 1 A schematic diagram of the CC cross-sectional structure.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1. Existing box culvert; 2. U-shaped channel structure; 3. Gate chamber structure; 4. Gate control room; 5. Outlet bottom protection.
[0031] 21. U-shaped channel side wall; 22. U-shaped channel bottom plate; 31. Gate; 32. Tenon; 33. Gate chamber side wall; 34. Gate chamber partition wall; 35. Connecting wall; 36. Gate chamber bottom plate; 37. Weir; 41. Gate control room side wall; 42. Gate control room bottom plate; 43. Gate control room top plate. Detailed Implementation
[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0033] like Figures 1 to 4 As shown, a gate structure for the outlet of a culvert in an urban channel includes an open U-shaped channel structure 2, a gate chamber structure 3, a gate control chamber 4, and an outlet protection 5. The U-shaped channel structure 2 is located at the downstream end of the existing culvert 1 and is connected to the existing culvert 1. The downstream end of the U-shaped channel structure 2 is connected to the gate chamber structure 3. The downstream end of the gate chamber structure 3 is provided with the outlet protection 5. The gate control chamber 4 is located adjacent to the gate chamber structure 3 on one side perpendicular to the water flow direction, and the gate control chamber 4 can control the flow rate within the gate chamber structure 3.
[0034] This utility model discloses a gate structure for the outlet of a box culvert in an urban channel. By setting an open U-shaped channel structure 2, it can complement the closed existing box culvert 1. While ensuring the flow capacity, the U-shaped channel structure 2 allows for direct observation of the water level, facilitating the control of the gate chamber structure 3 through the gate control room 4, thereby controlling the water flow and water level. The structure balances opening and closing efficiency and safety. The separate gate control room 4 facilitates inspection, operation, and maintenance. The structure has no grooves or other areas, preventing silt accumulation that could lead to gate failure. The overall structure is simple, safe, and controllable, effectively controlling the impact on the stability of the channel bank and bottom.
[0035] In one or more embodiments of this utility model, a first expansion joint is provided between the end of the U-shaped channel structure 2 near the existing box culvert 1 and the existing box culvert 1. By providing the first expansion joint, the connection stability between the U-shaped channel structure 2 and the existing box culvert 1 can be improved, ensuring the safety and durability of the connection between the two.
[0036] In one or more embodiments of this utility model, the U-shaped channel structure 2 includes U-shaped channel sidewalls 21 and U-shaped channel bottom plates 22. One end of each U-shaped channel sidewall 21 is connected to the corresponding sidewalls of the existing box culvert 1, and the other end is connected to the corresponding sidewalls of the gate chamber structure 3. The bottom of each U-shaped channel sidewall 21 is connected to the corresponding side of the U-shaped channel bottom plate 22, and both ends of the U-shaped channel bottom plate 22 are connected to the bottom plates of the existing box culvert 1 and the gate chamber structure 3, respectively. By setting the U-shaped channel sidewalls 21 and U-shaped channel bottom plates 22, it is convenient to connect with the existing box culvert 1 and the gate chamber structure 3, respectively. This allows for complementarity with the enclosed existing box culvert 1, ensuring flow capacity, while also forming an open structure that allows for direct observation of water level, facilitating control of water flow and water level.
[0037] Optionally, in an embodiment of the present invention, an armpit corner is provided on the inner side of the corner where the U-shaped channel sidewall 21 connects to the U-shaped channel bottom plate 22, with the armpit corner size being 300mm×300mm.
[0038] Optionally, in one or more embodiments of this utility model, the height of the U-shaped channel sidewall 21 gradually changes from one end near the existing box culvert 1 to the other end, and the thickness of the U-shaped channel sidewall 21 is not less than 250mm, and the thickness of the U-shaped channel bottom plate 22 is not less than 1 / 8 of its span. By gradually changing the height of the U-shaped channel sidewall 21 from one end near the existing box culvert 1 to the other end, the integrity of the connection between the existing box culvert 1 and the gate chamber structure 3 can be facilitated, and the external water and soil pressure can be borne. At the same time, controlling the thickness of the U-shaped channel sidewall 21 and the U-shaped channel bottom plate 22 can ensure the stability of the entire U-shaped channel structure 2.
[0039] In one or more embodiments of this utility model, the gate chamber structure 3 includes a gate 31, a tenon 32, a gate chamber side wall 33, a central partition wall 34, a connecting wall 35, and a gate chamber bottom plate 36. The gate chamber bottom plate 36 is disposed at the bottom of the U-shaped channel structure 2 on the side with the water flow. The connecting wall 35 is disposed between the U-shaped channel bottom plate 22 and the gate chamber bottom plate 36, and both ends of the connecting wall 35 are respectively connected to the U-shaped channel bottom plate 22 and the gate chamber bottom plate 36. The gate chamber side wall 33 and the central partition wall 34 are respectively disposed at both ends of the gate chamber bottom plate 36 and are correspondingly connected to both ends of the gate chamber bottom plate 36. The gate chamber sidewall 33 and the central partition wall 34 are respectively connected to the U-shaped groove sidewall 21 on both sides of the U-shaped groove structure 2. The gate control chamber 4 is adjacent to one side of the central partition wall 34. The tenon 32 is set on the gate chamber bottom plate 36. The gate 31 is rotatably set on the tenon 32. One end of the gate 31 is embedded in the gate chamber sidewall 33, and the other end passes through the central partition wall 34 and extends into the gate control chamber 4. The gate hydraulic equipment in the gate control chamber 4 is connected to the other end of the gate 31 and can drive the gate 31 to rotate. By setting the tenon 32, a force-bearing fulcrum can be provided for the gate 31. At the same time, the gate hydraulic equipment in the gate control chamber 4 is connected to the other end of the gate 31 for transmission (the specific structure is existing technology and will not be described in detail here). This can drive the gate 31 to rotate to adjust the water flow and water level in the gate chamber structure 3. Meanwhile, the connecting wall 35 serves to connect the U-shaped channel bottom plate 22 and the gate chamber bottom plate 36, and the middle partition wall 34 serves to isolate the gate chamber structure 3 from the gate control chamber 4.
[0040] It should be noted that, in the embodiments of this utility model, the central partition wall 34 is provided with a hole for the other end of the gate 31 to pass through. Reliable waterproofing measures are taken in the hole (such as setting water-stop wing rings, expansion water-stop strips, and second-stage pouring of expansion concrete, etc.) to ensure that the water flow in the gate chamber structure 3 will not enter the gate control room 4.
[0041] In practice, the number and thickness of the tenons 32 can be calculated based on the specifications of the gate 31. Generally, no less than two are set, and reinforced concrete components are used. The side wall 33 of the gate chamber is a reinforced concrete component. The outer side is the channel bank slope, which bears the water and soil pressure on the outer side. Its thickness is generally not less than 1 / 10 of its height and not less than 250mm. The thickness of the connecting wall 35 is generally not less than 1.2 times that of the side wall.
[0042] Optionally, in one or more embodiments of this utility model, the gate chamber structure 3 further includes a weir 37, which is disposed at one end of the gate chamber bottom plate 36 away from the U-shaped channel structure 2 and connected to the outlet bottom protection 5. By setting the weir 37, after the water flows through the gate 31, the weir 37 will cause the water to overflow, controlling the outflow velocity and reducing the impact on the channel. The weir 37 is an energy dissipation component for the outflow, and its height is determined according to the energy dissipation and scour prevention calculation in Appendix B of the "Sluice Gate Design Code" SL 265-2016; both the weir 37 and the central partition wall 34 are reinforced concrete components.
[0043] In one or more embodiments of this utility model, a second deformation joint is provided between the water-retaining weir 37 and the water outlet bottom protection 5. By providing the second deformation joint, the connection stability between the water-retaining weir 37 and the water outlet bottom protection 5 can be improved, ensuring the safety and durability of the connection between the two.
[0044] To ensure the overall structure's impermeability, a cushion layer is provided below the gate structure 3. This cushion layer is made of plain concrete, and all concrete used in the structure is impermeable concrete.
[0045] In one or more embodiments of this utility model, the gate control chamber 4 includes a gate control chamber side wall 41, a gate control chamber floor 42, and a gate control chamber top plate 43. The gate control chamber floor 42 is located at the bottom of one side of the gate chamber structure 3. The gate control chamber side wall 41 and the central partition wall 34 are respectively located on both sides of the gate control chamber floor 42 and are connected to the gate control chamber floor 42. The gate control chamber top plate 43 is located between the tops of the control chamber side wall 41 and the central partition wall 34. By setting the control chamber side wall 41, the gate control chamber floor 42, and the gate control chamber top plate 43, together with the central partition wall 34, a sealed space is formed, which facilitates the isolation and protection of the gate hydraulic equipment.
[0046] Here, the gate control room side wall 41, the gate control room bottom plate 42, and the gate control room top plate 43 are all reinforced concrete structures. The thickness of the gate control room bottom plate 42 is generally not less than 1 / 8 of its span and not less than 1.2 times that of the gate control room side wall 41; the thickness of the gate control room side wall 41 is not less than 250mm.
[0047] Optionally, in one or more embodiments of this utility model, an inspection hole is provided on the top plate 43 of the gate control room. The provision of an inspection hole facilitates the entry and exit of maintenance personnel, improving the convenience of maintenance.
[0048] In one or more embodiments of this utility model, the water outlet bottom protection 5 is made of plain concrete or masonry. Plain concrete or masonry is readily available, inexpensive, and has good structural strength and good resistance to water erosion.
[0049] Here, the outlet bottom protection 5 can be used to protect the bottom of the channel from being washed away by the water flow. Its length and width can be determined according to the outflow velocity. The material can be plain concrete or masonry blocks. A second deformation joint with a width of 20mm is provided between it and the water-retaining weir 37.
[0050] 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, improvements, etc., 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 gate structure for the outlet of a box culvert in an urban channel, characterized by: The system includes an open U-shaped channel structure (2), a gate chamber structure (3), a gate control chamber (4), and an outlet protection bottom (5). The U-shaped channel structure (2) is located at the downstream end of the existing box culvert (1) and is connected to the existing box culvert (1). The downstream end of the U-shaped channel structure (2) is connected to the gate chamber structure (3). The downstream end of the gate chamber structure (3) is provided with the outlet protection bottom (5). The gate control chamber (4) is located adjacent to the gate chamber structure (3) on one side perpendicular to the water flow direction, and the gate control chamber (4) can control the flow rate of the water in the gate chamber structure (3).
2. The gate structure for the urban channel box culvert outlet according to claim 1, characterized in that: A first deformation joint is provided between the end of the U-shaped trough structure (2) near the existing box culvert (1) and the existing box culvert (1).
3. The gate structure for the urban channel inner box culvert outlet according to claim 2, characterized in that: The U-shaped channel structure (2) includes a U-shaped channel sidewall (21) and a U-shaped channel bottom plate (22). One end of the U-shaped channel sidewall (21) on both sides is connected to the corresponding sidewalls on both sides of the existing box culvert (1). The other end of the U-shaped channel sidewall (21) on both sides is connected to the corresponding sidewalls on both sides of the gate chamber structure (3). The bottom of the U-shaped channel sidewall (21) is connected to the corresponding side of the U-shaped channel bottom plate (22). The two ends of the U-shaped channel bottom plate (22) are connected to the bottom plate of the existing box culvert (1) and the bottom plate of the gate chamber structure (3).
4. The gate structure for the urban channel inner box culvert outlet according to claim 3, characterized in that: The height of the U-shaped channel sidewall (21) gradually changes from one end near the existing box culvert (1) to the other end, and the thickness of the U-shaped channel sidewall (21) is not less than 250mm, and the thickness of the U-shaped channel bottom plate (22) is not less than 1 / 8 of its span.
5. The gate structure for the urban channel inner box culvert outlet according to claim 3, characterized in that: The gate chamber structure (3) includes a gate (31), a tenon (32), a gate chamber side wall (33), a central partition wall (34), a connecting wall (35), and a gate chamber bottom plate (36). The gate chamber bottom plate (36) is located at the bottom of the U-shaped channel structure (2) on the side with the water flow. The connecting wall (35) is located between the U-shaped channel bottom plate (22) and the gate chamber bottom plate (36), and both ends of the connecting wall (35) are respectively connected to the U-shaped channel bottom plate (22) and the gate chamber bottom plate (36). The gate chamber side wall (33) and the central partition wall (34) are respectively located at both ends of the gate chamber bottom plate (36) and are correspondingly connected to both ends of the gate chamber bottom plate (36). The side wall (33) and the central partition wall (34) are respectively connected to the U-shaped groove side wall (21) on both sides of the U-shaped groove structure (2). The gate control room (4) is arranged adjacent to one side of the central partition wall (34). The tenon (32) is set on the bottom plate (36) of the gate chamber. The gate (31) is rotatably set on the tenon (32). One end of the gate (31) is embedded in the side wall (33) of the gate chamber, and the other end passes through the central partition wall (34) and extends into the gate control room (4). The gate hydraulic equipment in the gate control room (4) is connected to the other end of the gate (31) and can drive the gate (31) to rotate.
6. The gate structure for urban channel box culvert outlet according to claim 5, characterized in that: The gate chamber structure (3) also includes a water-retaining weir (37), which is located at one end of the gate chamber bottom plate (36) away from the U-shaped channel structure (2) and is connected to the water outlet bottom protection (5).
7. The gate structure for urban channel box culvert outlet according to claim 6, characterized in that: A second deformation joint is provided between the water-retaining weir (37) and the water outlet bottom protection (5).
8. The gate structure for urban channel in-box culvert outlet according to claim 5, characterized in that: The gate control room (4) includes a gate control room side wall (41), a gate control room bottom plate (42), and a gate control room top plate (43). The gate control room bottom plate (42) is located at the bottom of one side of the gate chamber structure (3). The gate control room side wall (41) and the central partition wall (34) are respectively located on both sides of the gate control room bottom plate (42), and the gate control room side wall (41) and the central partition wall (34) are respectively connected to the gate control room bottom plate (42). The gate control room top plate (43) is located between the top of the control room side wall (41) and the central partition wall (34).
9. The gate structure for urban channel box culvert outlet according to claim 8, characterized in that: The gate control room has an inspection hole on the top plate (43).
10. The gate structure for the box culvert outlet of urban channel according to any one of claims 1-9, characterized in that: The water outlet bottom protection (5) is made of plain concrete or masonry block material.