Channel bank protection sheet pile structure

Abstract

The utility model relates to the technical field of bank protection sheet piles, in particular to a channel bank protection sheet pile structure which comprises a first sheet pile which is sequentially arranged and connected, the first sheet pile comprises a top plate, two inclined side plates and two bottom plates, the two inclined side plates are symmetrically connected to the two ends of the top plate, and the two bottom plates are connected to the tail ends of the two inclined side plates respectively and are symmetrical to each other. A first groove is formed between the two inclined side plates, the two bottom plates are parallel to the top plate, a second groove is formed between every two adjacent first sheet piles, first connecting pieces are arranged on the sides, facing the second grooves, of the inclined side plates, and second connecting pieces are arranged on the two sides of each second sheet pile. The second sheet piles are connected with the second connecting pieces located on the two sides of the second grooves through the second connecting pieces so that the second sheet piles can correspondingly shield the second grooves. And the second sheet piles bear direct impact of water waves instead of the second grooves, and thrust borne by the first sheet piles is reduced, so that the relative movement trend between the first sheet piles is reduced, the connection firmness between the first sheet piles is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bank protection sheet pile technology, specifically to a waterway bank protection sheet pile structure. Background Technology

[0002] Sheet piles are installed on both sides of the riverbank to reduce erosion of the riverbank soil and provide protection. Existing sheet piles are generally precast concrete, but some are made of newer materials such as PVC. Current sheet pile structures are typically simple slab structures, directly inserted into the soil on the inner side of the riverbank using construction equipment, with adjacent piles usually connected by a simple interlocking joint. However, in environments with rapid currents, such as coastlines and waterways, where the former experiences repeated tidal erosion and the latter is caused by ship traffic, existing slab structures are easily eroded and loosened, leading to pile collapse and loss of riverbank protection.

[0003] Currently, some sheet piles use connectors to link adjacent sheet piles to improve the connection strength between them. For example, a composite sheet pile disclosed in patent CN110565630A has a mortise and tenon structure on one side and a tenon structure on the other side. Adjacent sheet piles are tightly interlocked through the interlocking of the mortise and tenon structures to improve the connection strength between them, thereby improving the impact resistance and service life of the sheet piles. However, most existing sheet piles are Larssen sheet piles (also known as U-shaped sheet piles), which have grooved sections. When many sheet piles are connected to form a sheet pile revetment, both sides of the wall (one facing the river and the other facing the riverbank) have spaced grooves. When used for waterway revetment, the waves generated by ships do not directly impact the sheet pile revetment in the direction facing the riverbank. Instead, the waves have two velocity components: one towards the riverbank and the other moving forward with the ship. That is, the waves impact the sheet piles at an angle. This angled wave flow directly impacts the sidewalls of the grooved sections, and the impacted sheet piles experience instantaneous thrust, causing them to move in the same direction as the ship. Because the angled waves impact the sheet pile revetment in waves, each wave only impacts a few sheet piles in its corresponding area. These few sheet piles form a connected whole, and the other sheet piles adjacent to them are not impacted by the same wave. Therefore, these few sheet piles tend to separate from their adjacent sheet piles, affecting the connection strength and reducing the service life of the sheet piles. Utility Model Content

[0004] The purpose of this utility model is to provide a channel revetment sheet pile structure that solves the problem of low service life caused by excessive thrust from water waves between adjacent sheet piles. By setting a second sheet pile in the second groove formed between adjacent first sheet piles, the second sheet pile can block the second groove and bear the direct impact of water waves instead of the second groove, thereby reducing the thrust on the first sheet piles, reducing the relative movement tendency between the first sheet piles, improving the connection firmness between the first sheet piles, and extending the service life.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a channel revetment sheet pile structure, comprising a first sheet pile arranged sequentially and connected to each other, the first sheet pile comprising a top plate, two inclined side plates and two bottom plates, the two inclined side plates being symmetrically connected to the two ends of the top plate, the two bottom plates being respectively connected to the ends of the two inclined side plates and being symmetrical to each other, a first groove being formed between the two inclined side plates, the two bottom plates being parallel to the top plate, a second groove being formed between adjacent first sheet piles, and also comprising a second sheet pile, the inclined side plates being provided with a first connector on the side facing the second groove, the second sheet piles being provided with second connectors on both sides, the second sheet piles being connected to the second connectors located on both sides of the second groove through the second connectors, so that the second sheet piles correspondingly cover the second groove.

[0006] In one embodiment, the first connector is a mortise and tenon structure, and the second connector is a tenon structure, so that the second connector is inserted into the first connector from top to bottom to connect with each other.

[0007] In one embodiment, the side of the second sheet pile facing away from the second groove is a blocking surface. The distance between the blocking surface and the bottom wall of the second groove first increases and then decreases along the arrangement direction of the first sheet pile, so that the blocking surface is arc-shaped.

[0008] In one embodiment, the second sheet pile is provided with a front channel and a rear channel that connect the second groove. The front channel and the rear channel correspond to the front half and the rear half of the blocking surface, respectively, so that water can enter and exit the second groove.

[0009] In one embodiment, the side of the second sheet pile facing the second groove is a guide surface. The distance between the guide surface and the bottom wall of the second groove first decreases and then increases along the arrangement direction of the first sheet pile, so that the guide surface is arc-shaped.

[0010] In one embodiment, the inclined side plate is provided with a water inlet connecting the first groove and the second groove, so that water can enter and exit the first groove.

[0011] In one embodiment, a barrier net is provided between the ends of the two inclined side plates of the first sheet pile, and the barrier net blocks the opening of the first groove.

[0012] The advantages of this application compared to the prior art are:

[0013] In this embodiment, the second sheet pile is subjected to the impact of the water waves flowing towards the second groove, thus preventing the water waves from directly impacting the second groove. This also prevents the inclined side plate facing the direction of water wave flow in the second groove from directly bearing the impact of the water waves, thereby preventing the water waves from directly exerting a large thrust on the inclined side plate. This reduces the relative movement tendency between the impacted first sheet pile and the other first sheet piles that have not been significantly impacted, reduces the stress on the connection structure between adjacent first sheet piles, improves the service life of the first sheet piles, and reduces the damage rate of the first sheet piles. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a second sheet pile installed at the second groove in a waterway revetment sheet pile structure according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the connection structure between the second sheet pile and the first sheet pile in an embodiment of this application;

[0017] Figure 3 This is a structural schematic diagram of the second sheet pile in the embodiments of this application;

[0018] Figure 4 This is a schematic diagram of a water inlet and a barrier net installed on the first sheet pile in this embodiment of the application. Detailed Implementation

[0019] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0020] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0023] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0024] Please refer to Figure 1This application discloses a channel revetment sheet pile structure, comprising a first sheet pile 100 arranged sequentially and connected to each other. The first sheet pile 100 is arranged along the channel direction (the direction in which ships travel forward or backward) to protect the riverbank of the channel. The first sheet pile 100 includes a top plate 110, two inclined side plates 120, and two bottom plates 130. The two inclined side plates 120 are symmetrically connected to both ends of the top plate 110 and are inclined relative to the top plate 110. The two bottom plates 130 are respectively connected to the ends of the two inclined side plates 120 and are symmetrical to each other. A first groove 310 is formed between the two inclined side plates 120, with the top plate 110 serving as the bottom wall of the first groove 310 and the inclined side plates 120 serving as the side walls of the first groove 310. The two base plates 130 are parallel to the top plate 110. The base plates 130 extend from the ends of the inclined side plates 120 (i.e., the ends of the inclined side plates 120 away from the top plate 110) in a direction away from the first groove 310. Adjacent first sheet piles 100 are connected to each other through the ends of the base plates 130, forming a second groove 320 between adjacent first sheet piles 100. The two connected base plates 130 form the bottom walls of the second groove 320, and the two inclined side plates 120 that are close to each other among two adjacent first sheet piles 100 form the side walls of the second groove 320. When many first sheet piles 100 are arranged along the waterway direction and connected in sequence to form a waterway revetment sheet pile structure, the first grooves 310 are arranged in sequence at intervals on the side of the waterway revetment sheet pile structure facing the riverbank, and the second grooves 320 are arranged in sequence at intervals on the side of the waterway revetment sheet pile structure facing the river. Therefore, the orientations of the first grooves 310 and the second grooves 320 are opposite. The connection structure between adjacent first sheet piles 100 can be achieved using mortise and tenon joints. For a single first sheet pile 100, the end of one side of its base plate 130 has a recessed mortise structure, and the end of the other side of its base plate 130 has a projecting tenon structure. This allows for the mortise and tenon connection between adjacent first sheet piles 100. During installation, each first sheet pile 100 is inserted sequentially into the soil on the riverbank near the river along the waterway direction, with the insertion direction being vertical (i.e., along the length of the first sheet pile 100 itself). The mortise and tenon joints are then inserted during the insertion process. The first sheet piles 100 can be concrete sheet piles or steel sheet piles, with steel sheet piles being preferred.

[0025] In this embodiment, multiple first sheet piles 100 are arranged sequentially and connected along the waterway direction to form the foundation structure of the waterway revetment sheet pile structure. The first groove 310 faces the riverbank, and the second groove 320 faces the river. The water waves in the waterway are caused by the moving ships, so the impact direction of the water waves is inclined relative to the waterway direction and also inclined relative to the direction facing the riverbank, that is, obliquely impacting the revetment sheet pile structure. Therefore, when impacting the first sheet pile 100, there are two velocity components: along the waterway direction and towards the riverbank. That is, the water waves impact the first sheet pile 100 in both directions. Among the impacts of the water waves on the first sheet pile 100 along the waterway direction, the inclined side plate 120 on one side of the second groove 320 is a good force-bearing surface. For example, if the water waves flow in the forward direction along the waterway, the inclined side plate 120 of the second groove 320 facing the reverse direction of the waterway will be violently hit by the water waves because it faces the flow direction of the water waves directly, causing the corresponding first sheet pile 100 as a whole to be subjected to a thrust in the forward direction along the waterway direction. Furthermore, since the water waves occur in successive waves, a single wave can impact a certain number of connected first sheet piles 100 within its coverage area. During this process, the other first sheet piles 100 connected to the front and rear of this segment of first sheet piles 100 are not significantly impacted by the wave (or the impact effect is small). The impacted first sheet piles 100 are pushed by the wave in the direction of the waterway, either forward or backward, while the other connected first sheet piles 100 are not pushed. This causes the pushed first sheet piles 100 to tend to move relative to the other first sheet piles 100. Under the long-term impact of the waves, the connecting structure between the first sheet piles 100 is easily loosened or even damaged, reducing the service life of the first sheet piles 100. In severe cases, the first sheet piles 100 may detach from their connection with adjacent first sheet piles 100 and collapse, causing the waterway revetment sheet pile structure to partially lose its protection of the riverbank.

[0026] Therefore, please refer to Figure 1The channel revetment sheet pile structure described in this application embodiment further includes a second sheet pile 200. The inclined side plate 120 is provided with a first connector 121 on the side facing the second groove 320. Thus, both sides of the second groove 320 are provided with first connectors 121. The second sheet pile 200 is provided with second connectors 210 on both sides. The second sheet pile 200 is set corresponding to the second groove 320, and the second sheet pile 200 is connected to the second connectors 210 located on both sides of the second groove 320 through the second connectors 210. Specifically, the second connector 210 on the left side is connected to the first connector 121 on the left side, and the second connector 210 on the right side is connected to the first connector 121 on the right side. In this way, the second sheet pile 200 is fixed at the second groove 320 so that the second sheet pile 200 correspondingly covers the second groove 320. When ships travel in the channel, the resulting waves impact the second sheet pile 200 towards the second groove 320. This avoids direct impact from the waves onto the second groove 320, thus preventing the inclined side plate 120 facing the wave flow direction from directly bearing the impact. This prevents the waves from exerting a large thrust on the inclined side plate 120, reducing the relative motion tendency between the impacted first sheet pile 100 and the other unimpacted first sheet piles 100, reducing the stress on the connection structure between adjacent first sheet piles 100, increasing the service life of the first sheet piles 100, and lowering the damage rate. In this embodiment, the waves directly impact the top plate 110 of the first sheet pile 100 and the second sheet pile 200, but not directly impact the second groove 320 between adjacent first sheet piles 100. The angles between the top plate 110 of the first sheet pile 100 and the inclined side plate 200 facing the river and the wave flow direction are small, resulting in smaller interaction forces and less impact on the stability of the channel revetment sheet pile structure.

[0027] For further details, please refer to Figure 2In this embodiment, the first connector 121 is preferably a mortise and tenon structure, and the second connector 210 is a tenon structure, so that the second connector 210 is inserted into the first connector 121 from top to bottom to connect with each other. Specifically, the first connector 121 is fixed to the inclined side plate 120 facing the second groove 320, and the first connector 121 has a mortise and tenon structure such as a dovetail groove or a round groove. The second connector 210 is fixed to the second sheet pile 200 facing the second groove 320, and the second connector 210 is a tenon structure with a shape matching the mortise and tenon structure. During installation, the second sheet pile 200 is inserted into the second groove 320 in a vertical direction. During this process, the tenon structure is inserted into the mortise and tenon structure to achieve a fixed connection between the second sheet pile 200 and the two adjacent first sheet piles 100. This makes installation convenient, and the second sheet pile 200 is fixedly connected to the two adjacent first sheet piles 100, which can further improve the connection strength between the adjacent first sheet piles 100. The second sheet pile 200 acts as a reinforcing structure between the adjacent first sheet piles 100, and the second sheet pile 200 is supported by the two adjacent first sheet piles 100. This can not only improve the firmness of the connection between the first sheet piles 100, but also improve the structural stability of the second sheet pile 200, thereby improving the overall impact resistance of the channel revetment sheet pile structure.

[0028] Please refer to Figure 3 Furthermore, in this embodiment of the application, the side of the second sheet pile 200 facing away from the second groove 320 is preferably the blocking surface 220, that is, the blocking surface 220 faces the river. The distance between the blocking surface 220 and the bottom wall of the second groove 320 first increases and then decreases along the arrangement direction of the first sheet pile 100 (i.e., the waterway direction), so that the blocking surface 220 is arc-shaped. The blocking surface 220 bulges outward in the middle, and the blocking surface 220 can be divided into a front half side 221 and a rear half side 222 along the waterway direction with the middle as the dividing point. In this embodiment, on the one hand, the arc shape of the blocking surface 220 can disperse pressure through the arch principle, thereby improving its own pressure-bearing capacity and thus enhancing its resistance to water wave impact; on the other hand, the blocking surface 220 is usually directly impacted by water waves from one half of its side (front half 221 or rear half 222), while the other half of the blocking surface 220 is not impacted by water waves. The outward protrusion of the middle part of the blocking surface 220 actually blocks the front half 221 and the rear half 222. The half of the side that is impacted guides the water flow along the tangent of the arc surface towards the river direction through the arc shape, reducing the impact of the water flow continuing to flow forward along the blocking surface 220 and impact the first sheet pile 100, thus reducing the repeated impact of the water flow on the channel revetment sheet pile structure.

[0029] Please refer to Figure 3Furthermore, in one preferred embodiment of this application, the second sheet pile 200 is provided with a front channel 241 and a rear channel 242 connecting the second groove 320. The front channel 241 and the rear channel 242 correspond to the front half 221 and the rear half 222 of the blocking surface 220, respectively, so that water can enter and exit the second groove 320. As explained above in this embodiment, when subjected to oblique water wave impact, the blocking surface 220 mainly bears the impact directly through one of its half-sides facing the water wave. Therefore, in this embodiment, the front channel 241 corresponds to the front half 221 of the blocking surface 220, and the rear channel 242 corresponds to the rear half 222 of the blocking surface 220. When the front half 221 faces the water wave impact, water mainly enters through the front channel 241 and drains through the rear channel 242; when the rear half 222 faces the water wave impact, water mainly enters through the rear channel 242 and drains through the front channel 241. Thus, when the blocking surface 220 is impacted by water waves, some of the water that hits the blocking surface 220 can enter the second groove 320 through the front channel 241 or the rear channel 242, thereby reducing the impact force of the water waves on the blocking surface 220. In addition, the water stored in the second groove 320 can provide a certain buffering and support effect for the second sheet pile 200, further improving the impact resistance of the second sheet pile 200 and thus improving the stability of the second sheet pile 200.

[0030] Please refer to Figure 3 Furthermore, in this embodiment of the application, the side of the second sheet pile 200 facing the second groove 320 is preferably a guide surface 230. The distance between the guide surface 230 and the bottom wall of the second groove 320 decreases and then increases along the arrangement direction of the first sheet pile 100 (i.e., the waterway direction) so that the guide surface 230 is arc-shaped. Because the second sheet pile 200 has a front channel 241 and a rear channel 242 on its blocking surface 220, with the front channel 241 corresponding to the front half 221 of the blocking surface 220 and the rear channel 242 corresponding to the rear half 222 of the blocking surface 220, when the second sheet pile 200 is impacted by water waves, the water flow direction in the second groove 320 is from the front channel 241 to the rear channel 242, or from the rear channel 242 to the front channel 241. The setting of the guide surface 230 can generate a wall-attaching effect through its own arc shape, so that the water flow mainly flows along the guide surface 230, guiding the water flow from the front channel 241 to the rear channel 242 or from the rear channel 242 to the front channel 241, improving the water inlet and outlet efficiency in the second groove 320, and thus improving the water inlet and outlet function of the second groove 320 on the impact force on the second sheet pile 200.

[0031] Please refer to Figure 4Furthermore, in one preferred embodiment of this application, the inclined side plate 120 is provided with a water inlet 122 connecting the first groove 310 and the second groove 320, so that water can enter and exit the first groove 310. Thus, water in the first groove 310 can enter the first groove 310 through the water inlet 122. Since the first groove 310 faces the riverbank, the water in the first groove 310 can directly contact the riverbank soil. This avoids the complete isolation of the riverbank from the river due to the installation of the channel revetment sheet pile structure, prevents the complete severing of the ecological connection between the riverbank soil and the river, prevents the riverbank soil from hardening, allows aquatic plants to grow normally on the riverbank, and preserves a suitable living environment for amphibians, birds, and insects, thus ensuring a good natural ecology of the riverbank while achieving channel revetment.

[0032] However, when water is filled into the first groove 310, the local soil on the riverbank (corresponding to the area of ​​the first groove 310) may become too soft due to prolonged contact with water. This soil may slide into the first groove 310, gradually filling it. The gradual filling of the first groove 310 by loose soil has little impact on the channel revetment sheet pile structure. However, if large chunks of soil or rocks are thrown into the first groove 310 due to the surrounding soft soil, the impact may weaken the stability of the channel revetment sheet pile structure. Therefore, further details are needed. Figure 4 In one preferred embodiment of this application, a barrier net 140 is provided between the ends of the two inclined side plates 120 of the first sheet pile 100. The barrier net 140 blocks the opening of the first groove 310. When the first sheet pile 100 is installed on the riverbank, the barrier net 140 is already against the riverbank to block it. Afterwards, some loose soil on the riverbank can enter the first groove 310 through the gaps in the barrier net 140, while large pieces of soil or rocks are always blocked by the barrier net 140. Even if they tend to tilt towards the first groove 310 due to the softness of the surrounding soil, they will be directly blocked by the barrier net 140, thus avoiding collision with the channel revetment sheet pile structure and ensuring the stability of the channel revetment sheet pile structure.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A channel revetment sheet pile structure, comprising a first sheet pile arranged sequentially and connected to each other, the first sheet pile comprising a top plate, two inclined side plates, and two bottom plates, the two inclined side plates being symmetrically connected to both ends of the top plate, the two bottom plates being respectively connected to the ends of the two inclined side plates and being symmetrical to each other, a first groove being formed between the two inclined side plates, the two bottom plates being parallel to the top plate, and a second groove being formed between adjacent first sheet piles, characterized in that... It also includes a second sheet pile, wherein the inclined side plate is provided with a first connector on the side facing the second groove, and the second sheet pile is provided with a second connector on both sides. The second sheet pile is connected to the second connectors located on both sides of the second groove through the second connector, so that the second sheet pile correspondingly covers the second groove.

2. The waterway revetment sheet pile structure according to claim 1, characterized in that, The first connector is a mortise and tenon structure, and the second connector is a tenon structure, so that the second connector is inserted into the first connector from top to bottom to connect with each other.

3. The waterway revetment sheet pile structure according to claim 1, characterized in that, The side of the second sheet pile away from the second groove is a blocking surface. The distance between the blocking surface and the bottom wall of the second groove first increases and then decreases along the arrangement direction of the first sheet pile, so that the blocking surface is arc-shaped.

4. A channel revetment sheet pile structure according to claim 3, characterized in that, The second sheet pile is provided with a front channel and a rear channel that connect the second groove. The front channel and the rear channel correspond to the front half and the rear half of the blocking surface, respectively, so that water can enter and exit the second groove.

5. A channel revetment sheet pile structure according to claim 4, characterized in that, The side of the second sheet pile facing the second groove is a guide surface. The distance between the guide surface and the bottom wall of the second groove first decreases and then increases along the arrangement direction of the first sheet pile, so that the guide surface is arc-shaped.

6. A channel revetment sheet pile structure according to claim 4, characterized in that, The inclined side plate is provided with a water inlet that connects the first groove and the second groove, so that water can enter and exit the first groove.

7. A channel revetment sheet pile structure according to claim 6, characterized in that, A barrier net is provided between the ends of the two inclined side plates of the first sheet pile, and the barrier net blocks the opening of the first groove.

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