Anti-scouring device for pile foundation

Abstract

The invention provides a pile foundation anti-scouring device, and relates to the field of protection devices. The pile foundation anti-scouring device comprises a first annular connecting rod assembly, a second annular connecting rod assembly, a radial connecting rod, a pile leg and a bionic grass wall. The first annular connecting rod assembly surrounds the periphery of the pile foundation, the second annular connecting rod assembly surrounds the periphery of the first annular connecting rod assembly, and the first annular connecting rod assembly and the second annular connecting rod assembly are connected through a radial connecting rod; the first annular connecting rod assembly and the second annular connecting rod assembly are each provided with a pile leg. One end of the pile leg is connected with the first annular connecting rod assembly or the second annular connecting rod assembly, and a pile tip is mounted at the other end of the pile leg and used for being inserted into a seabed; the first annular connecting rod assemblies, the second annular connecting rod assemblies and the radial connecting rods are all provided with bionic grass walls. According to the pile foundation anti-scouring device, the technical problems that in the prior art, traditional anti-scouring measures are high in construction complexity, high in cost, insufficient in anti-subsidence capacity and unstable in protection effect are solved.

Description

Technical Field

[0001] This application relates to the field of protective devices, and more specifically, to a pile foundation anti-scouring device. Background Technology

[0002] In marine engineering projects such as offshore wind power, offshore platforms, and port terminals, pile foundations serve as an important form of structural support, and their stability directly affects the safety of the entire superstructure. However, under the long-term action of ocean dynamics such as waves and tides, scouring can easily occur around the pile foundation, forming local pits, exposing the pile body, reducing structural stability, and even causing serious consequences such as structural tilting and settlement, threatening the service safety of marine structures.

[0003] Common anti-erosion measures include laying filter layers, installing protective baskets, laying boulders, precast concrete slabs, and setting up flexible protective nets. These traditional methods have problems such as high construction complexity, high cost, and insufficient resistance to subsidence; or, under strong ocean currents and complex geological conditions, the protective effect is unstable and cannot guarantee long-term use. Summary of the Invention

[0004] The purpose of this application is to provide a pile foundation anti-scour device to alleviate the technical problems of high construction complexity, high cost, insufficient anti-settlement ability and unstable protection effect of traditional anti-scour measures in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: The pile foundation scour prevention device provided by the present invention includes a first circumferential connecting rod assembly, a second circumferential connecting rod assembly, a radial connecting rod, pile legs, and a biomimetic grass wall; The first circumferential link assembly is used to surround the outer periphery of the pile foundation, the second circumferential link assembly surrounds the outer periphery of the first circumferential link assembly, and the first circumferential link assembly and the second circumferential link assembly are connected by a radial link. Both the first circumferential link assembly and the second circumferential link assembly are equipped with the pile leg; one end of the pile leg is connected to the first circumferential link assembly or the second circumferential link assembly, and the other end is equipped with a pile tip, which is used to be inserted into the seabed; The first circumferential link assembly, the second circumferential link assembly, and the radial link are all equipped with biomimetic grass walls.

[0006] Furthermore, the horizontal cross-sections of the first circumferential link assembly and the second circumferential link assembly are polygonal, and each vertex of the first circumferential link assembly is connected to the corresponding vertex of the second circumferential link assembly through the radial link.

[0007] Furthermore, multiple vertices of the first circumferential link assembly are arranged opposite to multiple vertices of the second circumferential link assembly, and the radial link extends radially along the pile foundation.

[0008] Furthermore, the first circumferential linkage assembly includes a plurality of first links, which are connected end to end in sequence, and the connection point of two adjacent first links is the vertex; The second circumferential linkage assembly includes multiple second links, which are connected end to end in sequence, and the connection point of two adjacent second links is the vertex.

[0009] Furthermore, the first circumferential link assembly also includes a first connector having three first interfaces, the axes of which are arranged at an angle, wherein two of the first interfaces are respectively connected to two adjacent first links, and the other first interface is connected to the radial link. The second circumferential link assembly further includes a second connector having three second interfaces with the axes of the three second interfaces arranged at an angle, wherein two of the second interfaces are respectively connected to two adjacent second links, and the other second interface is connected to the radial link.

[0010] Furthermore, the first joint also has a first connecting protrusion, which is connected to the pile leg; The second connector also has a second connecting protrusion, which is connected to the pile leg.

[0011] Furthermore, a pile shoe is installed at the end of the pile tip near the pile leg, and the diameter of the pile shoe is larger than the diameter of the pile leg.

[0012] Furthermore, the first circumferential link assembly, the second circumferential link assembly, and the radial link are all provided with multiple vertical ropes, which are connected to bionic grass, and the bionic grass forms the bionic grass wall.

[0013] Furthermore, the pile foundation anti-scouring device also includes a buffer sleeve, which is located on the seabed, surrounds the outer periphery of the pile foundation, and is located inside the first circumferential connecting rod assembly; The outer contour of the horizontal cross-section of the buffer sleeve is symmetrical about the center, and both sides are a sine curve shape that bulges outward.

[0014] Furthermore, the pile foundation anti-scouring device includes a detection element installed on the pile foundation for detecting the position of the buffer sleeve.

[0015] Based on the above technical solutions, the technical effects achievable by this invention can be analyzed as follows: The pile foundation scour prevention device provided by the present invention includes a first circumferential connecting rod assembly, a second circumferential connecting rod assembly, a radial connecting rod, pile legs, and a biomimetic grass wall. The first circumferential connecting rod assembly is used to surround the outer periphery of the pile foundation, and the second circumferential connecting rod assembly surrounds the outer periphery of the first circumferential connecting rod assembly. The first circumferential connecting rod assembly and the second circumferential connecting rod assembly are connected by a radial connecting rod. Both the first circumferential connecting rod assembly and the second circumferential connecting rod assembly are equipped with pile legs. One end of the pile leg is connected to the first circumferential connecting rod assembly or the second circumferential connecting rod assembly, and the other end is equipped with a pile tip, which is used to be inserted into the seabed. The first circumferential connecting rod assembly, the second circumferential connecting rod assembly, and the radial connecting rod are all equipped with biomimetic grass walls.

[0016] The first and second circumferential linkage assemblies are connected together via radial linkages to form a planar frame. Both assemblies are fitted with pile legs, forming a vertical frame. Conical pile tips are provided at the bottom of the pile legs to facilitate the secure insertion of the anti-scour device into the seabed mud. Both assemblies are fitted with biomimetic grass walls, forming a circumferential arrangement of biomimetic grass walls, while the radial linkages also support biomimetic grass walls, forming a radial arrangement. These biomimetic grass walls effectively slow down the water flow around the foundation, reducing the scour depth of the pile foundation. Furthermore, the biomimetic grass walls promote the deposition of sediment around the pile foundation, forming silt and further protecting the foundation. The biomimetic grass walls also attract algae and shellfish to attach to the anti-scour device, calcifying the grass wall, extending its lifespan, and gradually forming a natural protective barrier. The addition of biomimetic grass walls to the anti-scour device also acts as an artificial reef, attracting fish to spawn, feed, and inhabit the area, thus restoring the ecosystem.

[0017] This pile foundation scour protection device integrates structural stability and ecological synergy. It is firmly embedded in the seabed through a combination of circumferential and radial support structures, enhancing its resistance to subsidence and current flow. Furthermore, the deployment of biomimetic grass walls significantly reduces the near-pile water flow velocity, effectively mitigating the scour effect on the pile foundation. Simultaneously, the biomimetic grass walls promote sediment deposition, attract marine organisms, and gradually evolve into a natural biological protective structure. This not only extends the service life of the scour protection device but also functions as an artificial reef, contributing to the improvement and restoration of the surrounding marine ecosystem and demonstrating promising engineering application prospects and ecological value. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application 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.

[0019] Figure 1 This is a schematic diagram of the structure of the pile foundation anti-scour device provided in the embodiments of this application; Figure 2 This is a top view of the pile foundation scour prevention device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the first joint in the pile foundation scour prevention device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the second joint in the pile foundation anti-scour device provided in the embodiments of this application.

[0020] icon: 100-Pile foundation; 200 - First circumferential link assembly; 210 - First link; 220 - First connector; 221 - First interface; 222 - First connecting protrusion; 300 - Second circumferential link assembly; 310 - Second link; 320 - Second connector; 321 - Second interface; 322 - Second connecting protrusion; 400-Radial Linkage; 500 - Pile leg; 510 - Pile tip; 520 - Pile boot. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] In the description of this application, it should be noted that the terms "inner" and "outer," 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 is in use. They are used only for the convenience of describing this application and for 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. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In marine engineering projects such as offshore wind power, offshore platforms, and port terminals, pile foundations serve as a crucial structural support, and their stability directly impacts the safety of the entire superstructure. However, under the long-term influence of ocean dynamics such as waves and tides, the area around pile foundations is highly susceptible to scouring, leading to localized pits, exposed piles, decreased structural stability, and even serious consequences such as structural tilting and settlement, threatening the service safety of marine structures. Currently common anti-scouring measures include laying filter layers, installing protective baskets, laying boulders, precast concrete slabs, or establishing flexible protective nets. These traditional methods have a series of problems, such as high construction complexity, high cost, insufficient resistance to subsidence, or unstable protective effects under strong currents and complex geological conditions, and the long-term effectiveness is not easily guaranteed. Furthermore, these devices generally neglect the synergistic design with the ecological environment, lacking consideration for marine ecological restoration and ecological engineering.

[0025] In view of this, see Figure 1 and Figure 2 The pile foundation scour prevention device provided in this embodiment of the invention includes a first circumferential connecting rod assembly 200, a second circumferential connecting rod assembly 300, a radial connecting rod 400, pile legs 500, and a biomimetic grass wall. The first circumferential connecting rod assembly 200 is used to surround the outer periphery of the pile foundation 100, and the second circumferential connecting rod assembly 300 surrounds the outer periphery of the first circumferential connecting rod assembly 200. The first circumferential connecting rod assembly 200 and the second circumferential connecting rod assembly 300 are connected by the radial connecting rod 400. Both the first circumferential connecting rod assembly 200 and the second circumferential connecting rod assembly 300 are equipped with pile legs 500. One end of the pile leg 500 is connected to the first circumferential connecting rod assembly 200 or the second circumferential connecting rod assembly 300, and the other end is equipped with a pile tip 510, which is used to be inserted into the seabed. The first circumferential connecting rod assembly 200, the second circumferential connecting rod assembly 300, and the radial connecting rod 400 are all equipped with biomimetic grass walls.

[0026] Specifically, the bottom of the pile foundation 100 extends into the seabed, and the anti-scouring device is installed around the outer perimeter of the pile foundation 100.

[0027] The first circumferential connecting rod assembly 200 and the second circumferential connecting rod assembly 300 are connected together by a radial connecting rod 400 to form a planar frame. Both the first circumferential connecting rod assembly 200 and the second circumferential connecting rod assembly 300 are equipped with pile legs 500, forming a vertical frame. The bottom of each pile leg 500 is provided with a conical pile tip 510, facilitating the secure insertion of the anti-scour device into the seabed mud. Both the first circumferential connecting rod assembly 200 and the second circumferential connecting rod assembly 300 are equipped with biomimetic grass walls, forming a circumferential arrangement of biomimetic grass walls. The radial connecting rod 400 is also equipped with a biomimetic grass wall, forming a radial arrangement of biomimetic grass walls. These biomimetic grass walls effectively slow down the water flow velocity around the foundation 100, reducing the scour depth of the pile foundation 100. Furthermore, the biomimetic grass walls promote the deposition of sediment around the pile foundation 100, forming silt, further protecting the pile foundation 100. The biomimetic grass wall can also attract shellfish and algae to attach and produce on the erosion control device, calcifying the biomimetic grass wall, extending its lifespan, and gradually forming a natural protective barrier. Adding an erosion control device to the biomimetic grass wall also acts as an artificial reef, attracting fish to spawn, feed, and inhabit the area, thus contributing to ecological restoration.

[0028] This pile foundation scour protection device integrates structural stability and ecological synergy. It is firmly embedded in the seabed through a combination of circumferential and radial support structures, enhancing its resistance to subsidence and current flow. Furthermore, the deployment of biomimetic grass walls significantly reduces the near-pile water flow velocity, effectively mitigating the scour effect on the pile foundation. Simultaneously, the biomimetic grass walls promote sediment deposition, attract marine organisms, and gradually evolve into a natural biological protective structure. This not only extends the service life of the scour protection device but also functions as an artificial reef, contributing to the improvement and restoration of the surrounding marine ecosystem and demonstrating promising engineering application prospects and ecological value.

[0029] The following is a detailed description of the structure of the pile foundation scour prevention device: In the optional solution provided by the embodiments of the present invention, the horizontal cross-section of the first circumferential link assembly 200 and the second circumferential link assembly 300 is polygonal, and each vertex of the first circumferential link assembly 200 is connected to the corresponding vertex of the second circumferential link assembly 300 through a radial link 400.

[0030] Specifically, in this embodiment, see Figure 2 Both the first circumferential link assembly 200 and the second circumferential link assembly 300 are hexagonal, and the six vertices of the first circumferential link assembly 200 correspond one-to-one with the six vertices of the second circumferential link assembly 300, connected by radial links 400. Of course, the first circumferential link assembly 200 and the second circumferential link assembly 300 may be configured as other polygons, such as triangles, quadrilaterals, or heptagons, all of which are within the protection scope of this embodiment of the invention.

[0031] Multiple vertices of the first annular link assembly 200 are connected one-to-one with multiple vertices of the second annular link assembly 300, avoiding the inconvenience of connecting one vertex of the first annular link assembly 200 to multiple vertices of the second annular link assembly 300 during installation. Both the first annular link assembly 200 and the second annular link assembly 300 have polygonal horizontal cross-sections, with adjacent sides connected at an included angle, which guides the water flow and disperses it.

[0032] In the optional solution provided by the embodiments of the present invention, multiple vertices of the first circumferential link assembly 200 are arranged opposite to multiple vertices of the second circumferential link assembly 300, and the radial link 400 extends radially along the pile foundation 100.

[0033] Specifically, the arrangement of multiple vertices of the first circumferential link assembly 200 and multiple vertices of the second circumferential link assembly 300 in a one-to-one correspondence means that the first circumferential link assembly 200 and the second circumferential link assembly 300 have the same shape, coincident centers, and the same orientation. Of course, the arrangement of multiple vertices of the first circumferential link assembly 200 and multiple vertices of the second circumferential link assembly 300 in a staggered manner should also be within the protection scope of this embodiment of the invention.

[0034] Multiple vertices of the first circumferential link assembly 200 are arranged one-to-one with multiple vertices of the second circumferential link assembly 300 to enable the radial link 400 to extend radially along the pile foundation 100, facilitating the installation of the radial link 400.

[0035] Among the optional solutions provided in the embodiments of the present invention, see [link to relevant documentation]. Figure 2 The first circumferential link assembly 200 includes a plurality of first links 210, which are connected end to end in sequence, and the connection point of two adjacent first links 210 is a vertex; the second circumferential link assembly 300 includes a plurality of second links 310, which are connected end to end in sequence, and the connection point of two adjacent second links 310 is a vertex.

[0036] Specifically, the lengths of the multiple first links 210 are equal, and the lengths of the multiple second links 310 are equal.

[0037] The first annular link assembly 200 consists of multiple first links 210 connected end-to-end in sequence. These multiple first links 210 are transported individually to the sea and then assembled on-site to form the first annular link assembly 200, which is then hoisted onto the seabed. This allows for on-site assembly, saving space requirements on the vessel during transportation. Similarly, the second annular link assembly 300 consists of multiple second links 310 connected end-to-end in sequence. These multiple second links 310 are transported individually to the sea and then assembled on-site to form the second annular link assembly 300, which is then hoisted onto the seabed. This also allows for on-site assembly, saving space requirements on the vessel during transportation.

[0038] In an optional embodiment of the present invention, the first circumferential link assembly 200 further includes a first connector 220, which has three first interfaces 221, and the axes of the three first interfaces 221 are arranged at an angle. Two of the first interfaces 221 are respectively connected to two adjacent first links 210, and the other first interface 221 is connected to the radial link 400. The second circumferential link assembly 300 further includes a second connector 320, which has three second interfaces 321, and the axes of the three second interfaces 321 are arranged at an angle. Two of the second interfaces 321 are respectively connected to two adjacent second links 310, and the other second interface 321 is connected to the radial link 400.

[0039] Specifically, the first link 210, the second link 310, and the radial link 400 are all configured as rectangular frame links, see [reference]. Figure 3 and Figure 4 Both the first interface 221 and the second interface 321 are square to match the shape of the first link 210, the second link 310, or the radial link 400. Preferably, the cross-sectional shape and size of the first link 210, the second link 310, and the radial link 400 are consistent.

[0040] The first connector 220 connects two adjacent first links 210 and their corresponding radial links 400; the second connector 320 connects two adjacent second links 310 and their corresponding radial links 400.

[0041] In the optional solution provided by the embodiments of the present invention, the first connector 220 further has a first connecting protrusion 222, which is connected to the pile leg 500; the second connector 320 further has a second connecting protrusion 322, which is connected to the pile leg 500.

[0042] Specifically, the first connecting protrusion 222 is inserted into the pile leg 500 and is interference-fitted with the pile leg 500; the second connecting protrusion 322 is inserted into the pile leg 500 and is interference-fitted with the pile leg 500. Of course, the way in which the pile leg 500 is inserted into the first connecting protrusion 222 and the second connecting protrusion 322 should also be within the protection scope of the embodiments of the present invention.

[0043] The first connecting protrusion 222 connects the pile leg 500 to the first circumferential link assembly 200 and connects the pile leg 500 to the apex of the first circumferential link assembly 200; the second connecting protrusion 322 connects the pile leg 500 to the second circumferential link assembly 300 and connects the pile leg 500 to the apex of the second circumferential link assembly 300.

[0044] In an optional embodiment of the present invention, a pile shoe 520 is installed at the end of the pile tip 510 near the pile leg 500, and the diameter of the pile shoe 520 is larger than the diameter of the pile leg 500.

[0045] Specifically, the diameter of the pile shoe 520 is set to be 2-3 times the diameter of the pile leg 500.

[0046] A pile shoe 520 is provided on the upper part of the pile tip 510. The diameter of the pile shoe 520 is larger than the diameter of the pile leg 500. The pile shoe 520 can prevent the pile leg 500 from sinking into the seabed mud and avoid the entire anti-scour device from tilting.

[0047] In the optional solution provided by the embodiments of the present invention, multiple vertical ropes are provided on the first circumferential connecting rod assembly 200, the second circumferential connecting rod assembly 300 and the radial connecting rod 400, and the vertical ropes are connected to bionic grass, which forms a bionic grass wall.

[0048] Specifically, multiple vertical ropes are provided on multiple first connecting rods 210, multiple second connecting rods 310 and multiple radial connecting rods 400, and bionic grass is connected along the vertical ropes. The bionic grass on the multiple vertical ropes forms a circumferential and radial bionic grass wall around the base.

[0049] A bionic grass wall is formed using bionic grass, and the bionic grass is fixed in place using vertical ropes.

[0050] In the optional solution provided by the embodiments of the present invention, the pile foundation anti-scour device further includes a buffer sleeve, which is located on the seabed, surrounds the outer periphery of the pile foundation 100, and is located within the first circumferential connecting rod assembly 200; the outer contour of the horizontal cross section of the buffer sleeve is symmetrical about the center, and both sides are a sine curve shape with an outward convexity.

[0051] Specifically, the buffer sleeve is made of flexible composite materials, such as a rubber layer. The buffer sleeve can absorb some of the vibration energy and reduce vortex-induced vibration.

[0052] The outer contour of the horizontal cross-section of the buffer sleeve is symmetrical about the center, and both sides are convex sine curves. This design of the outer wall of the buffer sleeve can guide the water flow.

[0053] In the optional solution provided by the embodiments of the present invention, the pile foundation anti-scour device includes a detection element, which is installed on the pile foundation 100 and used to detect the position of the buffer sleeve.

[0054] Specifically, the buffer sleeve is placed on the seabed, with its outer wall abutting against the first circumferential connecting rod assembly 200 and its inner wall abutting against the outer wall of the pile foundation 100. A detection element is installed on the outer wall of the pile foundation 100 and contacts the top of the buffer sleeve. When the seabed around the pile foundation 100 settles, the buffer sleeve moves downwards, separating the detection element from the buffer sleeve. The detection element can detect the downward movement of the buffer sleeve and transmit the information to maintenance personnel through the control center, allowing maintenance personnel to perform timely maintenance.

[0055] While using the buffer sleeve to reduce vibration, the location of the buffer sleeve can be used to determine whether the seabed around the pile foundation 100 has settled. The detection method is simple and does not require the installation of a complex sensing system.

[0056] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0057] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pile foundation scour prevention device, characterized in that, include: The first circumferential link assembly (200), the second circumferential link assembly (300), the radial link (400), the pile leg (500), and the biomimetic grass wall; The first circumferential link assembly (200) is used to surround the outer periphery of the pile foundation (100), the second circumferential link assembly (300) surrounds the outer periphery of the first circumferential link assembly (200), and the first circumferential link assembly (200) and the second circumferential link assembly (300) are connected by a radial link (400); Both the first circumferential link assembly (200) and the second circumferential link assembly (300) are equipped with the pile leg (500); one end of the pile leg (500) is connected to the first circumferential link assembly (200) or the second circumferential link assembly (300), and the other end is equipped with a pile tip (510), which is used to be inserted into the seabed; The first circumferential link assembly (200), the second circumferential link assembly (300), and the radial link (400) are all equipped with biomimetic grass walls.

2. The pile foundation scour prevention device according to claim 1, characterized in that, The horizontal cross-sections of the first circumferential link assembly (200) and the second circumferential link assembly (300) are polygonal, and each vertex of the first circumferential link assembly (200) is connected to the corresponding vertex of the second circumferential link assembly (300) through the radial link (400).

3. The pile foundation scour prevention device according to claim 2, characterized in that, The plurality of vertices of the first circumferential link assembly (200) are arranged opposite to the plurality of vertices of the second circumferential link assembly (300), and the radial link (400) extends radially along the pile foundation (100).

4. The pile foundation scour prevention device according to claim 3, characterized in that, The first circumferential linkage assembly (200) includes a plurality of first links (210), which are connected end to end in sequence, and the connection point of two adjacent first links (210) is the vertex; The second circumferential link assembly (300) includes a plurality of second links (310), which are connected end to end in sequence, and the connection point of two adjacent second links (310) is the vertex.

5. The pile foundation scour prevention device according to claim 4, characterized in that, The first circumferential link assembly (200) further includes a first connector (220), which has three first interfaces (221) and the axes of the three first interfaces (221) are arranged at an angle, wherein two of the first interfaces (221) are respectively connected to two adjacent first links (210), and the other first interface (221) is connected to the radial link (400); The second circumferential link assembly (300) further includes a second connector (320) having three second interfaces (321) with the axes of the three second interfaces (321) arranged at an angle, wherein two of the second interfaces (321) are respectively connected to two adjacent second links (310), and the other second interface (321) is connected to the radial link (400).

6. The pile foundation scour prevention device according to claim 5, characterized in that, The first connector (220) also has a first connecting protrusion (222), which is connected to the pile leg (500); The second connector (320) also has a second connecting protrusion (322) which is connected to the pile leg (500).

7. The pile foundation scour prevention device according to claim 1, characterized in that, A pile shoe (520) is installed at one end of the pile tip (510) near the pile leg (500), and the diameter of the pile shoe (520) is larger than the diameter of the pile leg (500).

8. The pile foundation scour prevention device according to claim 1, characterized in that, The first circumferential link assembly (200), the second circumferential link assembly (300) and the radial link (400) are each provided with a plurality of vertical ropes, the vertical ropes being connected to bionic grass, the bionic grass forming the bionic grass wall.

9. The pile foundation scour prevention device according to claim 1, characterized in that, The pile foundation anti-scouring device also includes a buffer sleeve, which is located on the seabed, surrounds the outer periphery of the pile foundation (100), and is located inside the first circumferential connecting rod assembly (200). The outer contour of the horizontal cross-section of the buffer sleeve is symmetrical about the center, and both sides are a sine curve shape that bulges outward.

10. The pile foundation scour prevention device according to claim 9, characterized in that, The pile foundation anti-scouring device includes a detection component, which is installed on the pile foundation (100) and used to detect the position of the buffer sleeve.

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