Fabricated intercepting ditch with variable section

Abstract

The invention relates to a variable-section assembly type intercepting ditch which comprises at least one strip-shaped bottom plate extending in the length direction and at least two side plates, the side plates are connected to the two sides of the bottom plate in the width direction respectively, and the side plates extend in the length direction of the bottom plate; at least one side plate is rotationally connected with the bottom plate through a rotary connecting structure, and the rotating axis of the rotary connecting structure is parallel to the length direction of the bottom plate; the rotary connecting part comprises a first connecting part, the first connecting part is arranged on the side edge of the bottom plate in the width direction, and the first connecting part extends in the length direction of the bottom plate; the second connecting part is arranged on one side of the side plate, and the second connecting part extends in the length direction of the side plate; the first connecting part and the second connecting part rotate relatively; according to the design, the rotary connecting structures extending in the length direction are arranged between the bottom plate and the side plates, so that the effects of reliable assembly and variable angle adjustment are achieved, and the adaptability of the assembly type intercepting ditch to complex ground forms is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a prefabricated intercepting ditch with variable cross-section. Background Technology

[0002] Interception ditches, as a crucial linear drainage facility, are an important component of drainage systems in engineering projects such as slopes, roads, and tunnels. Their core function is to effectively collect and guide surface runoff, preventing rainwater retention or erosion of foundations and slopes. Currently, this facility is widely used in various fields such as urban drainage, road rainwater harvesting, building roof drainage, and landscaping.

[0003] However, existing intercepting ditch structures mostly employ prefabricated components using standardized molds, which are then assembled or buried for installation. While this type of prefabricated structure offers improved construction convenience compared to cast-in-place intercepting ditches, its structural design is typically fixed, lacking flexibility to adapt to different terrain conditions. In practical engineering applications, slope ratios, catchment areas, and flow directions vary considerably, and different regions require different cross-sectional shapes, depths, and drainage slopes for the intercepting ditches. However, existing prefabricated intercepting ditches are often produced using custom-made, one-piece molds, fixing the ditch dimensions and sidewall angles during the manufacturing stage, making it difficult to adjust flexibly according to site conditions. When adapting to different slopes or catchment conditions, it is often necessary to customize new molds or use multiple types of components for construction, significantly increasing mold manufacturing, transportation, and storage costs. Because the intercepting ditch is a monolithic structure, its large size and difficulty in stacking occupy transportation and on-site storage space, further increasing the overall project cost. Furthermore, its poor versatility for on-site installation affects the overall economic efficiency and flexibility of the construction.

[0004] Furthermore, while some existing prefabricated intercepting ditches employ an assembly structure, they are typically rigidly connected, meaning the relative angle between the side plates and the base plate remains non-adjustable during installation. When the foundation is uneven or has varying slopes, the intercepting ditch struggles to maintain a continuous drainage slope, easily leading to localized water accumulation or poor drainage. Some products rely on bolts or clips for fixing, requiring repeated adjustments and tightening during installation, resulting in low assembly efficiency and high precision requirements. Deviations in connection positions can also lead to uneven joint gaps, affecting the sealing effect and causing leaks and water accumulation during use, thus reducing the reliability and durability of the drainage system.

[0005] Therefore, existing intercepting ditches suffer from insufficient flexibility, poor versatility, and high mold costs when dealing with different slopes, catchment areas, and complex terrains. Thus, it is necessary to study and improve these intercepting ditches. In order to solve the above problems, the concept of this invention is proposed. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art. This application provides a modular intercepting ditch with a variable cross-section to solve the technical problems of insufficient flexibility, poor versatility and high mold cost in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated intercepting ditch with a variable cross-section, comprising: at least one strip-shaped bottom plate extending along its length; at least two side plates, each side plate being connected to both sides of the bottom plate in the width direction, and each side plate extending along the length direction of the bottom plate; wherein at least one side plate is rotatably connected to the bottom plate via a rotating connection structure, the rotation axis of the rotating connection structure being parallel to the length direction of the bottom plate; the rotating connection includes: a first connection portion disposed on the side of the bottom plate in the width direction, and extending along the length direction of the bottom plate; a second connection portion disposed on one side of the side plate, and extending along the length direction of the side plate; the first connection portion and the second connection portion rotate relative to each other. The opposing inner surfaces of each side plate and the top surface of the bottom plate together form a channel, the channel extending through both sides of the bottom plate in the length direction, and the side of the channel opposite to the bottom plate being open.

[0008] However, by adjusting the angle between the side plate and the bottom plate through the rotating connection structure, the channel cross-section angle can be changed and adjusted, thus realizing a drainage channel with a variable cross-section. This improves the adaptability of the prefabricated intercepting ditch to complex ground morphology, thereby adapting to the drainage flow of different sites and meeting the needs of multiple working conditions.

[0009] Preferably, the rotating connection structure includes: a convex shaft portion that protrudes outward from the side of the base plate and has a cylindrical outer surface; a sleeve shell with an axially oriented opening in its sidewall and a cylindrical inner cavity formed by inward indentation along the opening, the opening communicating with the inner cavity; the inner cavity of the sleeve shell fitting into the outer surface of the convex shaft portion; the axis of the convex shaft portion being parallel to the length direction of the base plate, and the axis of the sleeve shell being coaxial with the axis of the convex shaft portion; a radial gap being formed between the convex shaft portion and the sleeve shell, the radial gap extending along the length direction of the base plate.

[0010] However, the fit between the cylindrical convex shaft and the sleeve shell ensures good rotational accuracy and avoids jamming caused by assembly errors, achieving stable and smooth rotation. Furthermore, the coaxial arrangement and radial clearance ensure both rotational flexibility and fitting precision. Additionally, the convex shaft and sleeve shell are detachably connected, facilitating assembly and disassembly.

[0011] Preferably, an annular seal extending along the length of the base plate is provided between the convex shaft portion and the sleeve shell. The annular seal is sleeved on the outer surface of the convex shaft portion and fits against the inner surface of the sleeve shell. The radial thickness of the annular seal is not less than the radial gap.

[0012] Because of the risk of water leakage at the rotating joint, the reliability of the intercepting ditch is affected; by filling the radial gap with an annular seal, the waterproofing problem at the rotating joint is solved, and the sealing and durability of the structure are improved.

[0013] Preferably, the width of the opening is smaller than the diameter of the convex shaft portion, and the width of the opening is not less than the thickness of the base plate; at least one end of the sleeve shell along the axial direction is provided with an opening communicating with the inner cavity.

[0014] Since the convex shaft and the sleeve housing may radially detach after assembly, resulting in an unreliable connection, a radial constraint is created by making the opening width smaller than the diameter of the convex shaft, preventing detachment during use and achieving reliable positioning. Furthermore, by sliding the convex shaft axially into the end opening, quick installation and convenient use are possible.

[0015] Preferably, of the two side plates, one side plate has an obtuse angle with the bottom plate, and the other side plate has a right angle with the bottom plate.

[0016] However, the obtuse-angled side plate serves as a water-diverting side plate, forming a funnel shape that more smoothly receives surface runoff flowing down the slope, reducing water impact and splashing, resulting in higher water collection efficiency. The right-angled side plate serves as a water-blocking side plate, forming a water barrier that provides the maximum effective water-blocking height at the same height, preventing water overflow and providing the strongest and safest protection for the downstream protected area.

[0017] Preferably, the intercepting ditch further includes: a cover plate, the cover plate extending along the length of the base plate and covering the opening of the channel, the opposite sides of the cover plate in the width direction respectively abutting against the edge of the two side plates away from the base plate.

[0018] Since the side plates need to be fixed after angle adjustment to prevent deformation due to backfill soil pressure, a cover plate connects the tops of the two side plates, forming a rigid constraint that effectively fixes the slope of the side plates and enhances overall stability. Furthermore, the side plates closest to the cover plate are rotatably connected to the cover plate via a first rotating component and a second rotating component, further enhancing overall stability.

[0019] Preferably, the base plate is provided with a plurality of L-shaped anchor bars, and the anchor bars are detachably connected to the base plate.

[0020] In addition, the bottom surface of the base plate is provided with a plurality of L-shaped anchor bars at intervals along its length; the anchor bars are engaged with the grooves on the bottom surface of the base plate by the snap-fit ​​part at the top of its vertical section; and the bottom area near the end edge of at least one end of the base plate along its length is not provided with the anchor bars.

[0021] However, the L-shaped anchor bars and the mortar pad layer anchoring greatly improve the overall stability after installation. Furthermore, the detachable installation of the anchor bars facilitates the overlapping installation of multiple intercepting ditches upstream and downstream after disassembly. In addition, the design of not having anchor bars at one end further facilitates the overlapping of upstream and downstream components, enabling rapid connection without disassembly.

[0022] Preferably, the side plate includes at least two plates, each plate being spliced ​​together along the height direction by a connector; moreover, the connector is H-shaped, adjacent plates are connected by the H-shaped connector, and the grooves on both sides of the connector are respectively inserted into the ends of the adjacent plates.

[0023] However, the height of the side plate can be extended by using H-type connectors, which further expands the applicability and drainage capacity of the intercepting ditch without changing the core design.

[0024] Preferably, at least one of the base plate, side plate, or cover plate is made of glass fiber reinforced polyurethane resin.

[0025] Traditional concrete components are heavy, susceptible to corrosion, and difficult to transport and install. By using glass fiber reinforced polyurethane resin, the components are made lighter, making them easier to transport and install. They also have high strength, ensuring structural stability, and excellent anti-aging and corrosion resistance, extending their service life.

[0026] The present invention also provides a prefabricated intercepting ditch with variable cross-section, characterized in that it comprises: at least one base plate extending along its length direction, wherein the width of one end of the base plate along the length direction is smaller than the width of the other end; at least two side plates, each side plate being connected to both sides of the base plate in the width direction, and each side plate extending along the length direction of the base plate.

[0027] However, by adopting a trapezoidal base plate structure, it is not necessary to distinguish between different specifications of intercepting ditch components when adjacent intercepting ditches are connected by overlapping tiles, thus significantly improving the versatility and compatibility of the components. Compared with the prior art, the aforementioned variable cross-section prefabricated intercepting ditch can complete the transition installation between upstream and downstream using the same structural component, reducing the types and number of molds required, and lowering mold manufacturing and storage costs.

[0028] Compared with the prior art, the present invention has at least the following beneficial effects: This type of prefabricated intercepting ditch with variable cross-section includes: at least one strip-shaped base plate extending along its length, at least two side plates, each side plate being connected to both sides of the base plate in the width direction, and each side plate extending along the length direction of the base plate; wherein, at least one side plate is rotatably connected to the base plate via a rotating connection structure, the rotation axis of the rotating connection structure being parallel to the length direction of the base plate; the rotating connection includes: a first connection portion disposed on the side of the base plate in the width direction, and extending along the length direction of the base plate; a second connection portion disposed on one side of the side plate, and extending along the length direction of the side plate; the first connection portion and the second connection portion rotate relative to each other; through the above design, the intercepting ditch of the present invention, by providing a rotating connection structure extending along the length direction between the base plate and the side plates, achieves reliable assembly and adjustable angle, thereby improving the adaptability of the prefabricated intercepting ditch to complex ground morphologies.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a side view of the side plate of the present invention. Figure 4 For the present invention Figure 1 A magnified structural diagram of part A; Figure 5 This is a partial structural schematic diagram of the present invention; Figure 6 This is another partial structural schematic diagram of the present invention; Figure 7 This is a schematic diagram of a modified overall structure of the present invention; Figure 8 This is a schematic diagram of another modified overall structure of the present invention; Figure 9 This is a schematic diagram of the overlapping structure of the tiles in use according to the present invention; Figure 10 This is a schematic diagram of the structure in the construction and use state of the present invention; Figure 11 This is a schematic diagram of another modified overall structure of the present invention; Figure 12 This is a schematic diagram of another variation of the overall structure of the present invention; Figure 13 This is a schematic diagram of another overlapping structure of the present invention in use. Figure 14 This is a schematic diagram of the energy dissipation structure of the present invention in use. Figure 15 This is a schematic diagram of another overlapping tile connection structure of the present invention.

[0031] Reference numerals: 1. Base plate; 2. Side plate; 3. Rotary connection structure; 31. Protruding shaft; 32. Sleeve shell; 321. Opening; 322. Inner cavity; 323. Hole; 33. Radial clearance; 34. Annular seal; 4. Channel; 5. Opening; 6. Cover plate; 7. First rotating component; 8. Second rotating component; 9. Anchor hook; 10. Plate; 11. Connector; 111. Groove; 12. Mortar; 13. Energy dissipation structure. Detailed Implementation

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolted connections, etc.

[0033] The present invention will now be described in more detail with reference to specific embodiments. However, the implementation of the present invention is not limited thereto. The embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. For process parameters or conditions not specifically specified, conventional techniques can be referred to.

[0034] Please see Figures 1-3As shown, the technical solution adopted in this specific embodiment is: a prefabricated intercepting ditch with a variable cross-section, comprising: at least one strip-shaped bottom plate 1 extending along the length direction; at least two side plates 2, each side plate 2 being connected to both sides of the bottom plate 1 in the width direction, and each side plate 2 extending along the length direction of the bottom plate 1; wherein, at least one side plate 2 is rotatably connected to the bottom plate 1 via a rotating connection structure 3, the rotation axis of the rotating connection structure 3 being parallel to the length direction of the bottom plate 1; the rotating connection part includes: a first connecting part... The first connecting part is disposed on the side of the base plate 1 in the width direction and extends along the length direction of the base plate 1; the second connecting part is disposed on one side of the side plate 2 and extends along the length direction of the side plate 2; the first connecting part and the second connecting part rotate relative to each other; the inner surfaces of each side plate 2 facing each other and the top surface of the base plate 1 together form a channel 4, the channel 4 passes through both sides of the base plate 1 in the length direction, and the side of the channel 4 opposite to the base plate 1 is an open opening 5.

[0035] In this embodiment, the variable cross-section prefabricated intercepting ditch is a prefabricated intercepting ditch consisting of a base plate 1 and two side plates 2. The base plate 1 extends in a strip shape along its length. First connecting portions extending along the length direction are respectively provided on the two edges of the base plate 1 in the width direction, and second connecting portions extending along the length direction are correspondingly provided on the edges of the side plates 2. The first and second connecting portions are interlocked, allowing the side plates 2 to be rotatably connected to both sides of the base plate 1. The opposing inner surfaces of each side plate 2 and the top surface of the base plate 1 together form a drainage channel 4. This channel 4 is continuously continuous along the length direction of the base plate 1, and its top is open, forming an opening 5.

[0036] During actual installation, users can adjust the angle between the side plate 2 and the base plate 1 by rotating the first and second connecting parts relative to the terrain slope or drainage requirements. This allows the cross-sectional shape and size of the channel 4 to be adjusted, creating a variable cross-section drainage channel 4. This significantly improves the adaptability of the prefabricated intercepting ditch to complex ground shapes, thus meeting the drainage flow and space requirements of different sites. Simultaneously, the assembly method based on the rotating connection structure 3 makes on-site construction faster, greatly reducing the workload of template customization or on-site pouring. It should be noted that, as an alternative implementation, the base plate 1 can be integrally formed with one of the side plates 2, with only the other side plate 2 rotatably connected via the aforementioned rotating connection structure 3. This solution is particularly suitable for situations requiring unilateral adjustment in narrow areas, ensuring both structural stability and installation flexibility.

[0037] Please see Figures 1-5As shown, the rotating connection structure 3 includes: a convex shaft portion 31, which protrudes outward from the side of the base plate 1 and has a cylindrical outer surface; a sleeve shell 32, the side wall of which has an opening 321 along the axial direction, and the sleeve shell 32 is recessed inward along the opening 321 to form an inner cavity 322 with a cylindrical cross-section, the opening 321 communicating with the inner cavity 322; the inner cavity 322 of the sleeve shell 32 is sleeved with the outer surface of the convex shaft portion 31; the axis of the convex shaft portion 31 is parallel to the length direction of the base plate 1, and the axis of the sleeve shell 32 is coaxial with the axis of the convex shaft portion 31; a radial gap 33 is formed between the convex shaft portion 31 and the sleeve shell 32 in the radial direction, and the radial gap 33 extends along the length direction of the base plate 1.

[0038] In this embodiment, the base plate 1 has a convex shaft portion 31 extending along its length on its side, and the outer surface of the convex shaft portion 31 is cylindrical. A corresponding sleeve shell 32 is provided on the inner side of the side plate 2. The inner cavity 322 of the sleeve shell 32 is also cylindrical in cross-section, and an opening 321 is provided in the axial direction to facilitate assembly. During assembly, the sleeve shell 32 of the side plate 2 is fitted onto the convex shaft portion 31 from the end of the base plate 1, thereby achieving a rotatable connection between the two. A predetermined gap is formed radially between the convex shaft portion 31 and the sleeve shell 32, allowing the side plate 2 to rotate smoothly. The radial gap 33 extends along the length of the base plate 1, and the width of the radial gap 33 is basically consistent. However, the cooperation between the cylindrical convex shaft portion 31 and the sleeve shell 32 ensures good rotational accuracy and avoids jamming caused by assembly errors. Simultaneously, the extension of the radial gap 33 ensures the integrity of the annular seal arrangement and improves the anti-seepage capability. In other embodiments, the convex shaft portion 31 can be an integrally formed structure of the base plate 1, or it can be fixed to the side of the base plate 1 by threads or welding. It should be noted that the outer surface of the convex shaft portion 31 is cylindrical and the inner cavity 322 of the sleeve shell 32 has a cylindrical cross-section. Except for the cylindrical shape, any other shape that allows the convex shaft portion 31 and the inner cavity 322 to rotate relative to each other is applicable to this embodiment. For example, the inner cavity 322 of the sleeve shell 32 can be designed with a polygonal cross-section to achieve segmented limited rotation. Similarly, the outer surface of the convex shaft portion 31 can be designed with a polygonal shape to meet specific angle adjustment requirements.

[0039] Please see Figure 1 and Figure 5As shown, an annular seal extending along the length of the base plate 1 is provided between the convex shaft portion 31 and the sleeve shell 32. The annular seal is fitted onto the outer surface of the convex shaft portion 31 and conforms to the inner surface of the sleeve shell 32. The radial thickness of the annular seal is not less than the radial gap 33. In this embodiment, an annular seal is provided at the mating point between the convex shaft portion 31 and the sleeve shell 32, and the annular seal is continuously arranged along the length of the base plate 1. The annular seal is tightly fitted onto the outer surface of the convex shaft portion 31 and conforms to the inner surface of the sleeve shell 32, thereby filling the radial gap 33 and achieving a reliable seepage-proof sealing effect. Moreover, this sealing structure effectively prevents rainwater or mud from seeping into the outside of the intercepting ditch along the rotating connection structure 3, ensuring the waterproof performance of the intercepting ditch; at the same time, the annular seal can also play a shock-absorbing and buffering role, reducing rotational friction noise. It should be noted that the annular seal can be made of rubber or fluorosilicone. An alternative solution is to fill the space between the convex shaft portion 31 and the sleeve housing 32 with sealant or apply a waterproof coating to achieve the same anti-seepage effect.

[0040] The width of the opening 321 is smaller than the diameter of the convex shaft portion 31, and the width of the opening 321 is not less than the thickness of the base plate 1. At least one end of the sleeve shell 32 along the axial direction is provided with an opening 323 communicating with the inner cavity 322. Specifically, the axial end of the convex shaft portion 31 slides into the inner cavity 322 along the axial opening 323 of the sleeve shell 32, and the width of the opening 321 restricts the convex shaft portion 31 from radially disengaging from the sleeve shell 32, i.e., a radial constraint is formed between the edge of the opening 321 and the outer surface of the convex shaft portion 31. Simultaneously, the base plate 1 passes through the opening 321, and the opening 321 constitutes a guide structure for the sliding of the base plate 1. In this embodiment, the sleeve shell 32 communicates with the inner cavity 322 through the axial opening 323, and the convex shaft portion 31 at the end of the base plate 1 can slide into the inner cavity 322 of the sleeve shell 32 along the direction of the opening 323, achieving rapid assembly. Because the width of the opening 321 is smaller than the diameter of the convex shaft 31, the sleeve shell 32 constrains the convex shaft 31 radially, preventing it from falling off. The base plate 1 partially penetrates the sleeve shell 32 through the opening 321, and the edge of the opening 321 forms a sliding fit with the base plate 1, thus forming a guide structure that plays a limiting and guiding role during assembly. Moreover, it achieves a unity of rapid assembly and reliable limiting, which is convenient for construction and prevents the connection from loosening during use; at the same time, the axial sliding installation method makes on-site assembly smoother and reduces the need for external tools. It should be noted that the opening 323 can be provided with a guide chamfer for insertion. An alternative solution is that the opening 321 of the sleeve shell 32 can be provided with local reinforcing ribs along the length direction to improve edge rigidity.

[0041] Please see Figure 1As shown, of the two side plates 2, one side plate 2 forms an obtuse angle with the bottom plate 1, while the other side plate 2 forms a right angle with the bottom plate 1. In this embodiment, the left side plate 2 is arranged at an obtuse angle relative to the bottom plate 1, while the right side plate 2 is connected to the bottom plate 1 at a right angle. This arrangement makes the cross-section of the intercepting ditch asymmetrical, which can optimize the flow guiding capacity according to the drainage direction. The obtuse angle side is used for the side with the flow direction to reduce the impact resistance of the water flow and prevent sediment deposition. Moreover, it can improve drainage efficiency and improve fluid transition characteristics, making it suitable for roads, squares, and other places with slopes or unidirectional flow; at the same time, the asymmetrical layout can improve overall stability. It should be noted that, preferably, the obtuse angle range is 90°~140°. Please refer to... Figure 11 As shown, an alternative solution is that the included angle of both side plates 2 can be adjusted, and the optimal drainage angle under different slopes can be achieved by rotating the connecting structure 3.

[0042] Please see Figure 1 and Figure 6 As shown, the intercepting ditch further includes a cover plate 6, which extends along the length of the base plate 1 and covers the opening 5 of the channel 4. The opposite sides of the cover plate 6 in the width direction respectively abut against the edges of the two side plates 2 away from the base plate 1. Each side plate 2 is rotatably connected to the cover plate 6 via a first rotating member 7 and a second rotating member 8. In this embodiment, the intercepting ditch further includes a cover plate 6. This cover plate 6 extends along the length of the base plate 1 and, after installation, covers the channel 4 formed by the base plate 1 and the side plates 2, used to close the opening 5 at the top of the channel 4. The width of the cover plate 6 is slightly larger than the distance between the two side plates 2, and its two sides abut against the upper edges of each side plate 2, thereby achieving stable coverage after installation. A first rotating member 7 and a second rotating member 8 are respectively provided at the joint between the cover plate 6 and the two side plates 2, allowing the cover plate 6 to rotate relative to each side plate 2.

[0043] The rotating component can be a hinge structure, a pin connection structure, or a rotating connection structure 3 formed by a pin and a limiting sleeve, used to achieve a rotatable fit between the cover plate 6 and the side plate 2. In this design, the rotating component is a hinge. During assembly, the two side plates 2 are first connected to the bottom plate 1 to form a channel 4 structure, and then the cover plate 6 is connected to the two side plates 2 through the rotating component, so that the bottom of the cover plate 6 abuts against the top of the two side plates 2 and remains flush. However, after installation, the cover plate 6 cannot be flipped up on one side; its bottom provides lateral limiting and support to the two side plates 2, thereby preventing the two side plates 2 from tilting or deforming under external force or water flow impact. This fit ensures that the slope of the side plate 2 remains constant, making the drainage direction and slope of the channel 4 inside the intercepting ditch stable and consistent, thereby improving the overall drainage efficiency and structural stability. In an alternative solution, the rotating component adopts a stainless steel pin with a corrosion-resistant bushing to improve the durability and rust prevention of the connection; the cover plate 6 can be made of metal plate, composite resin plate or precast concrete to adapt to different usage environments and load requirements.

[0044] Please see Figure 1 As shown, the base plate 1 is provided with multiple L-shaped anchor bars 9, and the anchor bars 9 are detachably connected to the base plate 1. Furthermore, multiple L-shaped anchor bars 9 are spaced apart along the length of the bottom surface of the base plate 1. The anchor bars 9 are engaged with the grooves on the bottom surface of the base plate 1 via snap-fit ​​portions at the top of their vertical sections; and at least one end of the base plate 1, near the edge of the end, is not provided with the anchor bars 9. However, the L-shaped anchor bars 9 are anchored to the mortar 12 bedding layer, greatly improving the overall stability after installation. Moreover, the detachable installation of the anchor bars 9 facilitates the overlapping installation of multiple intercepting ditches upstream and downstream after disassembly. Furthermore, the design of not providing anchor bars 9 at one end creates favorable conditions for overlapping of upstream and downstream components, enabling rapid overlapping without disassembly.

[0045] In this embodiment, multiple L-shaped anchor bars 9 are evenly spaced along the length of the bottom surface of the base plate 1. The horizontal section of each anchor bar 9 is bonded to the foundation concrete, and the top of the vertical section is provided with a snap-fit ​​part, which is embedded into a pre-set groove on the bottom surface of the base plate 1 to achieve a stable connection. The edge areas at both ends of the base plate 1 are not provided with anchor bars 9 to facilitate smooth connection with the main body of the adjacent intercepting ditch during assembly. During installation, the intercepting ditch can be firmly embedded into the concrete base layer through the anchor bars 9 to prevent displacement due to water erosion or external forces. However, the design of the L-shaped anchor bars 9 enhances the bonding strength between the base plate 1 and the foundation, effectively improves the overall structural stability, and increases the interlocking force with the concrete; the spaced arrangement ensures uniform support and facilitates rapid installation of the base plate 1; the design of not providing anchor bars 9 at both ends of the base plate 1 facilitates modular splicing and improves on-site assembly flexibility. It should be noted that the anchor hook 9 can be made of rust-proof galvanized steel; and in addition to the L-shape, other shapes of the anchor hook 9 are also applicable to this embodiment, such as changing the L-shaped structure to a T-shape or a barb shape.

[0046] Please see Figure 7 , Figure 8 and Figure 12 As shown, the side panel 2 includes at least two plates 10, each of which is spliced ​​together along the height direction by a connector 11; moreover, the connector 11 is H-shaped, and adjacent plates 10 are connected by the H-shaped connector 11, and the grooves 111 on both sides of the connector 11 are respectively inserted into the ends of the adjacent plates 10.

[0047] In this embodiment, the side panel 2 is composed of two upper and lower panels 10 spliced ​​together to adapt to different depth or drainage requirements. Adjacent panels 10 are connected by H-shaped connectors 11. The H-shaped connectors 11 have corresponding grooves 111 on both sides, and the ends of each panel 10 are inserted into the corresponding grooves 111 to form a stable interlocking fit, thereby keeping the overall side panel 2 flat and having a high-strength connection effect after splicing. Moreover, this assembly method allows for flexible adjustment of the height of the side panel 2 on-site according to the depth of the drainage ditch to meet different engineering requirements. Furthermore, the modular assembly of the side panel 2 through the H-shaped connector 11 assembly structure facilitates transportation and on-site installation; at the same time, the connection strength is high, and misalignment or leakage is not easy to occur, improving structural integrity and service life. It should be noted that the H-shaped connectors 11 can be integrally molded using glass fiber reinforced polyurethane to match the material of the side panel 2. An alternative solution is that the connectors 11 can adopt a "T-shaped" or "dovetail-shaped" slot structure to achieve quick disassembly and reuse.

[0048] At least one of the base plate 1, side plate 2, or cover plate 6 is made of glass fiber reinforced polyurethane resin. In this embodiment, the base plate 1, side plate 2, and cover plate 6 are all integrally molded from glass fiber reinforced polyurethane resin. This material is lightweight, corrosion-resistant, and high-strength, making it suitable for long-term use in humid outdoor environments or environments exposed to chemical corrosion. Furthermore, this material replaces traditional concrete or metal materials, significantly reducing the overall weight and facilitating transportation and installation; its corrosion resistance significantly improves the service life of the drainage ditch, making it particularly suitable for high-humidity environments such as roads, ports, and chemical plants. It should be noted that UV stabilizers and anti-aging agents can be added to the polyurethane resin to delay material aging. An alternative option is that the cover plate 6 can be made of high-strength aluminum alloy or stainless steel to enhance its compressive strength.

[0049] Furthermore, the top surface of the base plate 1, near the channel 4, is provided with several drainage guide channels along the length of the base plate 1. These drainage guide channels are parallel to each other, and their bottom surfaces are recessed downwards relative to the top surface of the base plate 1. The base plate 1 has multiple notches at both ends along its length, each notch communicating with a corresponding drainage guide channel. The bottom surfaces of the drainage guide channels are arranged at an angle along the length of the base plate 1. Because the bottom of the channel is flat, the water flow is slow, which easily leads to siltation. The design of the guide channels can accelerate the flow rate and reduce silt deposition. Simultaneously, the inclined bottom and end notches ensure a smooth transition of water flow at the component joints, reducing hydraulic loss and localized scouring.

[0050] In this embodiment, multiple parallel drainage channels are provided on the top surface of the base plate 1 near the channel 4 area. Each channel extends along the length of the base plate 1, and its bottom surface is slightly concave downward relative to the top surface of the base plate 1 to form a trough structure. Multiple notches are provided at both ends of the base plate 1, each notch communicating with the drainage channels, allowing rainwater to collect through the channels and flow out from the notches or into adjacent ditch sections. Furthermore, the bottom surface of the drainage channels is inclined along the length of the base plate 1, gradually sloping downwards in the downstream direction to form a natural drainage slope, allowing water to flow smoothly out. This structure, through the interconnected design of the drainage channels and notches, forms an efficient drainage path, significantly improving drainage speed and reducing water accumulation; the inclined bottom design is self-cleaning, preventing long-term accumulation of sediment and blockage. It should be noted that the number of drainage channels can be set to 3 to 6 depending on the ditch width and flow requirements. An alternative solution is to attach a filter screen or grid plate to the bottom of the drainage channels to prevent large particles of impurities from entering the ditch.

[0051] Please see Figure 9As shown, the present invention also provides a prefabricated intercepting ditch with a variable cross-section, comprising: at least one base plate 1, the base plate 1 extending along its length direction, and the width of one end of the base plate 1 along the length direction being smaller than the width of the other end; at least two side plates 2, each side plate 2 being respectively connected to both sides of the base plate 1 in the width direction, and each side plate 2 extending along the length direction of the base plate 1.

[0052] In this embodiment, the bottom plate 1 of the intercepting ditch adopts a trapezoidal structure design, that is, the width of one end of the bottom plate 1 along the length direction is smaller than the width of the other end, so that the entire bottom plate 1 is arranged in a trapezoidal shape. Specifically, the length direction of the bottom plate 1 is the direction of water flow extension, and side plates 2 are respectively connected to both sides of the bottom plate 1. Each side plate 2 is fixedly connected to the bottom plate 1 and extends along the length direction of the bottom plate 1, and the two together form a water flow channel 4.

[0053] During installation, multiple intercepting ditches can be connected sequentially along the water flow direction. The trapezoidal design of the base plate 1 allows adjacent intercepting ditches to directly form a tile-like overlapping structure. For example, if the base plate 1 of the downstream intercepting ditch is wider and the base plate 1 of the upstream intercepting ditch is narrower, the end of the upstream base plate 1 can be inserted into the area above the downstream base plate 1 during installation, achieving a natural transition and overlap. This structure eliminates the need for multiple sets of molds required for different cross-sectional widths in traditional solutions; the trapezoidal base plate 1 produced using only the same mold can meet the installation requirements for tile-like overlapping.

[0054] The trapezoidal structure of the base plate 1 allows for segmented installation from downstream to upstream during on-site construction. The main body of the upstream ditch is inserted sequentially into the inner side of the adjacent downstream ditch, forming a continuous water flow channel 4. After installation, a smooth overlapping interface is formed between the intercepting ditches, effectively guiding the flow.

[0055] By adopting a trapezoidal base plate structure, adjacent intercepting ditches can be connected by overlapping tiles without distinguishing between different specifications of intercepting ditch components, thus significantly improving the versatility and compatibility of the components. Compared with the prior art, the variable cross-section prefabricated intercepting ditch described in this embodiment can complete the transition installation between upstream and downstream using the same structural component, reducing the types and number of molds required, and lowering mold manufacturing and storage costs.

[0056] Furthermore, because the width of the base plate 1 gradually changes along its length (i.e., it gradually narrows along its length), an overlapping structure can naturally form at the joints, thereby enhancing the sealing and seepage prevention performance of the connection area, ensuring continuous and smooth drainage, and avoiding localized water accumulation problems caused by steps or misalignments at the joints. At the same time, this structure achieves an adaptive overlapping function without increasing assembly difficulty, simplifying on-site construction operations and improving construction efficiency and installation accuracy.

[0057] It should be noted that the width of the trapezoidal base plate 1 can be adjusted according to different water catchment conditions or slope requirements. Preferably, the width difference between the two ends of the base plate 1 can be set to 20-80mm to meet the requirements of water flow rate and overlap depth in different sites. Similarly, the side plate 2 and the base plate 1 are assembled through a detachable connection structure, such as slots or buckles, thereby further improving the maintainability and transportation convenience of the overall structure. In another optional solution, the trapezoidal base plate 1 and the side plate 2 can be an integrally molded structure to enhance the overall rigidity and seepage prevention effect. Moreover, the base plate 1 and the side plate 2 can be made of different materials, such as glass fiber reinforced polyurethane resin, polypropylene composite material, or concrete composite board, to adapt to the strength and corrosion resistance requirements of different engineering environments.

[0058] In addition, to enhance the sealing performance at the overlapping joints of the tiles, rubber sealing strips or anti-seepage adhesive layers can be installed at the wide end of the trapezoidal base plate 1 or the contact area of ​​the side plate 2. This structure, while maintaining ease of assembly, further improves the overall anti-seepage performance and service life of the intercepting ditch.

[0059] However, this embodiment utilizes the trapezoidal structure design of the base plate 1 to achieve automatic matching and seamless connection of the intercepting ditch during tile overlapping, simplifying mold design and manufacturing processes while improving installation accuracy and drainage continuity. This technical solution combines economy and practicality, and is suitable for complex engineering scenarios with varying terrain slopes, catchment areas, or drainage directions.

[0060] In another embodiment, to accommodate situations where the drainage route needs to change direction, such as on curved slopes or beside roads, the present invention further utilizes the structural features of the trapezoidal base plate 1. Specifically, please refer to... Figure 13 As shown, because the width of one end of the base plate 1 along its length is smaller than that of the other end, it forms a natural trapezoidal structure. This design allows adjacent intercepting ditches to be connected not only by overlapping tiles in a straight line, but also by overlapping at a certain angle. In actual installation, the narrow end of the upstream intercepting ditch can be obliquely overlapped on the wide end of the downstream intercepting ditch. That is, the end of the upstream intercepting ditch is not parallel to the centerline of the downstream intercepting ditch, but forms an angle with it. The inclined surface of the end of the base plate 1 of the upstream intercepting ditch contacts the inner side of the wide end of the base plate 1 of the downstream intercepting ditch, achieving a slanted overlap.

[0061] The advantages of this overlapping bend method are: smooth turning without the need for specially angled elbow components; and smooth turning of the entire intercepting ditch system through adjustments to the overlap angle using standardized trapezoidal base plate components, perfectly adapting to curved drainage paths. Installation is also flexible and convenient. During on-site construction, when the drainage route needs to turn, workers simply rotate the upstream intercepting ditch at a certain angle to overlap it with the downstream intercepting ditch, greatly improving installation flexibility and adaptability to complex terrain. Furthermore, it maintains connection effectiveness; even with an inclined overlap, the trapezoidal base plate ensures sufficient overlap area, guaranteeing structural continuity and stability. Elastic sealant or sealing strips can be used to fill the overlap gaps, ensuring seepage prevention at the bend. In addition, it reduces cost and complexity, avoiding the high cost and logistical hassles of customizing specific angle elbows for each turn. However, by adopting a trapezoidal base plate 1 structure, the present invention not only achieves a straight overlap in the direction of water flow, but also expands its angle adjustment capability in the horizontal plane, greatly enhancing the adaptability of the prefabricated intercepting ditch to various complex engineering layouts.

[0062] In another optimized implementation, in order to cope with the situation of large slope and fast water flow, reduce the scouring and erosion of the ditch bottom by high-speed water flow and reduce the noise generated during drainage, the present invention provides an energy dissipation structure on the surface of the bottom plate 1.

[0063] Specifically, please refer to Figure 14 As shown, an energy dissipation structure 13 extending at least along the width direction of the base plate 1 is provided on the top surface of the base plate 1, i.e., the bottom surface forming the channel 4. This energy dissipation structure 13 is fixed to the base plate 1. Preferably, the energy dissipation structure 13 is integrally formed with the base plate 1, for example, by molding, to ensure the integrity and durability of the structure. Furthermore, several energy dissipation structures 13 can be provided as needed.

[0064] The design and arrangement of the energy dissipation structure 13 can be implemented in several ways: First, through continuous parallel arrangement, multiple energy dissipation structures 13 are spaced apart along the width of the base plate 1 and extend continuously along its entire length. This arrangement creates stable frictional resistance, continuously reducing the water flow velocity. Second, through staggered or wavy arrangement, the energy dissipation structure 13 is not strictly linear but can adopt a staggered, sawtooth, or wavy layout. This design can more effectively disrupt the water flow, creating more eddies, thereby dissipating the kinetic energy of the water flow over a shorter distance.

[0065] As an alternative, the energy dissipation structure 13 is an independent component, fixed to the top surface of the base plate 1 by means of clips, slots, or adhesive. This allows users to flexibly choose whether to install the energy dissipation structure, or to select energy dissipation structure modules of different heights and densities, based on specific flow rate and velocity conditions, thus achieving functional customization.

[0066] However, by increasing the roughness of the ditch bottom surface through the energy dissipation structure 13, significant resistance is created to the water flow, effectively reducing the flow velocity. This greatly reduces the erosion of the intercepting ditch itself and downstream intercepting ditches, extending the service life of the entire drainage system. Furthermore, the reduced water flow velocity facilitates the deposition of solid particles such as silt and gravel carried in the water, preventing their long-distance transport under the influence of high-speed water flow, thus facilitating later centralized cleaning and maintenance. In addition, the energy dissipation structure 13 disrupts the stability of the water flow, preventing water hammer effects or high-speed jets, and significantly reducing noise generated during drainage. This is particularly important for projects passing through noise-sensitive areas such as residential areas and parks. Moreover, the integrally formed energy dissipation structure 13 also acts as a reinforcing rib, enhancing the bending stiffness and load-bearing capacity of the base plate 1, making it better able to withstand the pressure of the backfill soil above and ground loads.

[0067] In another implementation, under more complex or constrained site conditions, when the drainage path requires sharp turns with small radii or turns at specific angles, the inclined overlap of the trapezoidal base plate 1 alone may not avoid spatial interference between adjacent intercepting ditch side plates 2. Therefore, a flexible overlap method incorporating side plate cutting is provided. Specifically, please refer to... Figure 15 As shown, during the implementation of the bend and overlap, if the target bend angle is large or the site space is limited, the side panels 2 of the upstream and downstream intercepting ditches will collide in the overlap area. In this case, it is necessary to locally cut the end area of ​​the side panel 2 in the upstream intercepting ditches that will interfere with the downstream intercepting ditches. During on-site installation, the upstream intercepting ditches are first pre-positioned at the overlap position of the downstream intercepting ditches according to the designed bend angle. The parts on the side panel 2 of the upstream intercepting ditches that interfere with the edge of the side panel 2 or bottom plate 1 of the downstream intercepting ditches are marked. Based on the interference situation, the cutting line is drawn with ink on the side panel 2 that needs to be cut. The cutting size, i.e., the shape and size of the triangle or trapezoid to be cut, depends entirely on the actual required bend angle. The larger the angle, the more material needs to be removed.

[0068] The cutting operation can be performed using a portable angle grinder, jigsaw, or similar tools, cutting along the marked lines to the side panel 2. Due to the lightweight and easy-to-process material, this process is quick and easy. After cutting, the newly formed cross-section is ground smooth. Then, a special polyurethane sealant is applied to the cross-section or waterproof sealing tape is affixed to prevent water leakage from the non-original joints. Finally, the cut end of the upstream intercepting ditch side panel 2 is fitted and overlapped with the inner wide end of the downstream intercepting ditch bottom panel 1, and fixed using connectors or external backfilling to achieve a sharp turn connection. Through simple cutting modifications, standardized components can adapt to extremely complex or compact layouts, solving the problem of installation at special corners. Furthermore, the turning angle can be determined and cut in real-time according to the site terrain, achieving flexible on-site adjustments that are impossible with traditional precast concrete intercepting ditches. It should be noted that strict sealing treatment of the cross-section is required after cutting, and the remaining side panel must be ensured to have sufficient structural strength.

[0069] The actual construction and installation process mainly includes the following steps: 1. Trench excavation Based on the designed location, slope, and dimensions, a trench-shaped earthen channel is excavated on the ground. For example... Figure 10 As shown, the gap between the earthen trench and the outer side of the intercepting ditch should be no less than 4 cm to facilitate mortar filling. The upper surface of the ditch should be no less than 2 cm below the ground surface to facilitate rainwater collection. The slope of the earthen trench should be basically consistent with the design slope. If the ditch is located above ground, trench excavation is not required.

[0070] 2. Laying the subbase layer After the trench is excavated, a mortar cushion layer with a thickness of about 5 to 6 cm is laid at the bottom.

[0071] 3. Pre-assembly Two side plates are connected to both sides of the base plate in the width direction, and together with the base plate, they form a water flow channel with an open top to form the main body of the intercepting ditch; Depending on the situation, the anchor hook bars within 5-10cm of the bottom of one side of the base plate can be removed to facilitate the subsequent overlapping installation of the tiles.

[0072] 4. Install drainage ditches Before the mortar hardens, place the main body of the intercepting ditch, with the base plate and side plates connected, onto the mortar cushion layer, ensuring full contact between the anchor bars at the bottom of the base plate and the mortar. Adjust the slope of the side plates to the design value. Connectors and extension plates can be installed as needed, and cover plates can be installed to maintain a fixed slope. Since the main bodies of the intercepting ditch are connected using an overlapping, tile-like method, for ease of installation, it is recommended to start from the downstream end, placing the upstream section of the ditch body inside the adjacent downstream section in a tile-like manner.

[0073] 5. Filling the gaps like Figure 10 As shown, after installation, cement mortar or sand should be backfilled into the gaps between the prefabricated intercepting ditch and the earthen ditch.

[0074] The foregoing, in conjunction with embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and resulting technical effects of the present invention, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the possibility of forming a better connection structure by adding or reducing connecting accessories, depending on the specific implementation.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A prefabricated intercepting ditch with variable cross-section, characterized in that, include: At least one strip-shaped base plate extending along its length; At least two side plates, each side plate being connected to both sides of the base plate in the width direction, and each side plate extending along the length direction of the base plate; In this configuration, at least one of the side plates is rotatably connected to the base plate via a rotatable connection structure, wherein the rotation axis of the rotatable connection structure is parallel to the length direction of the base plate; the rotatable connection includes: A first connecting portion is disposed on the side of the base plate in the width direction, and the first connecting portion extends along the length direction of the base plate; The second connecting part is disposed on one side of the side plate and extends along the length direction of the side plate; The first connecting part and the second connecting part rotate relative to each other.

2. The prefabricated intercepting ditch with variable cross-section according to claim 1, characterized in that, The first connecting part is a convex shaft part, which protrudes outward from the side of the base plate and has a cylindrical outer surface; The second connecting part is a sleeve shell, the side wall of the sleeve shell has an opening along the axial direction, and the sleeve shell is recessed inward along the opening to form an inner cavity with a cylindrical cross section, and the opening communicates with the inner cavity; The inner cavity of the sleeve is fitted with the outer surface of the convex shaft. The axis of the convex shaft is parallel to the length direction of the base plate, and the axis of the sleeve shell is coaxial with the axis of the convex shaft.

3. The prefabricated intercepting ditch with variable cross-section according to claim 2, characterized in that, An annular seal is provided between the convex shaft portion and the sleeve shell, extending along the length direction of the base plate. The annular seal is sleeved on the outer surface of the convex shaft portion and fits against the inner surface of the sleeve shell.

4. The prefabricated intercepting ditch with variable cross-section according to claim 2, characterized in that, The width of the opening is less than the diameter of the convex shaft portion, and the width of the opening is not less than the thickness of the base plate; The sleeve shell has an opening at at least one end along the axial direction that communicates with the inner cavity.

5. The prefabricated intercepting ditch with variable cross-section according to claim 1, characterized in that: Of the two side plates, one side plate has an obtuse angle with the bottom plate, and the other side plate has a right angle with the bottom plate.

6. The prefabricated intercepting ditch with variable cross-section according to claim 1, characterized in that, The inner surfaces of each of the side plates facing each other and the top surface of the bottom plate together form a channel, which runs through both sides of the bottom plate along its length, and the side of the channel opposite to the bottom plate is open; The intercepting ditch also includes: A cover plate, extending along the length of the base plate and covering the opening of the channel. The two opposite sides of the cover plate in the width direction respectively abut against the edge of the two side plates away from the bottom plate.

7. The prefabricated intercepting ditch with variable cross-section according to claim 1, characterized in that: The base plate is provided with a plurality of L-shaped anchor bars, and the anchor bars are detachably connected to the base plate.

8. The prefabricated intercepting ditch with variable cross-section according to any one of claims 1 to 7, characterized in that, The side panel includes at least two panels, and each panel is spliced ​​together along the height direction by connectors. Furthermore, the connector is H-shaped, and adjacent plates are connected by the H-shaped connector. The grooves on both sides of the connector are respectively inserted into the ends of the adjacent plates.

9. The prefabricated intercepting ditch with variable cross-section according to any one of claims 1 to 7, characterized in that, At least one of the base plate, side plate or cover plate is made of glass fiber reinforced polyurethane resin.

10. A prefabricated intercepting ditch with variable cross-section, characterized in that, include: At least one base plate, the base plate extending along its length direction, and the width of one end of the base plate along the length direction being smaller than the width of the other end; At least two side plates, each side plate being connected to both sides of the base plate in the width direction, and each side plate extending along the length direction of the base plate.

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