Anti-scouring grass grid for ocean pile foundation
By laying the lattice body and the flex-resistant grass grid of the marine pile foundation with flexible brushes around the marine pile foundation, the deformation of the flexible brush slows down the water flow velocity and anchors improves structural stability, the problem of unstable erosion protection of marine pile foundation is solved. Effective long-term protection effect is achieved.
Patent Information
- Application Number
- CN202411684426.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-01-07
AI Technical Summary
The prior art cannot effectively slow down the water flow rate around the marine pile foundation, resulting in unstable erosion protection effect.
Design a marine pile foundation anti-solution grass grid, including the lattice body and a flexible brush. The bottom of the lattice body is connected to the seabed, and the flexible brush is connected to the top of the lattice body. The deformation of the flexible brush in the direction of the water flow is used to slow down the water flow velocity. And improve structural stability and adaptability through anchors and splicing plates.
Effectively slow down the velocity of ocean water flow, reduce the erosion of the water flow on the seabed, make the seabed grass grid stronger, and achieve long-term and stable protective effect.
Smart Images
Figure CN119266294A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an anti-scouring grass grid for marine pile foundations. Background Art
[0002] With the increase in construction activities, the construction in water environments such as the ocean has increased year by year. Among them, there are a large number of pile foundation projects in the water environment, especially in recent years, with the development of offshore wind power projects, a large number of pile foundations exist in the ocean. However, the scouring problem in the water environment has a great impact on the safety of pile foundations. On land, the area of rivers and lakes is limited and is greatly affected by the terrain. The scouring law of riverbeds and lakebeds is easy to grasp, and overall scouring protection is easy to implement. The marine environment is more complex, and various factors such as typhoons and temperature will cause seabed scouring, and the scouring law is not easy to grasp.
[0003] At present, the general method to solve the scouring problem of pile foundations in water environment is to use riprap, sand bags, sand blankets and other methods to form a protective layer for pressure covering, so as to achieve immediate protection of potential scouring areas. Although these measures can reduce the scouring depth to a certain extent, due to the complexity of hydrodynamics, they cannot effectively slow down the flow velocity around the pile foundation, so there are limitations in achieving long-term and stable protection effects. Summary of the invention
[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the flow velocity of water around the pile foundation cannot be effectively slowed down, and to provide an anti-scouring grass grid for marine pile foundation.
[0005] The present invention solves the above technical problems through the following technical solutions:
[0006] The present invention provides an anti-scour grass grid for marine pile foundations, which is laid on the seabed around the pile foundations. The anti-scour grass grid for marine pile foundations comprises a grid body and a plurality of flexible brushes. The bottom of the grid body is connected to the seabed and distributed around the pile foundations, and the plurality of flexible brushes are all connected to the top of the grid body.
[0007] In this scheme, the grid body and the flexible brush constitute the main components of the marine pile foundation anti-scouring grass grid. On the one hand, by arranging the flexible brush on the grid body, the flexible brush can be deformed along the direction of the water flow under the action of a large water flow, thereby achieving the effect of slowing down the flow rate of the ocean water flow and reducing the direct scouring effect of the water flow on the seabed. On the other hand, since the flexible brush can be deformed along the direction of the water flow, its direct force can be reduced, so that the force transmitted to the grid body below is also reduced accordingly, making the seabed grass grid more solid as a whole and protecting the seabed grass grid from being washed away as a whole.
[0008] Preferably, the lattice body includes a lattice frame and a plurality of anchors, a plurality of the flexible brushes are connected to the top of the lattice frame, the tops of the plurality of anchors are connected to the bottom of the lattice frame, and the bottoms of the plurality of anchors extend downward in a vertical direction and are inserted into the seabed.
[0009] In this solution, by arranging a lattice frame in the lattice body, a cavity can be formed in the lattice body, ensuring that the seabed land in the cavity of the lattice body is not affected or is less affected. In addition, by arranging anchors in the lattice body, the depth of the lattice body extending into the bottom of the seabed can be increased, thereby improving the stability of the lattice body placed on the seabed.
[0010] Preferably, the lattice frame comprises a plurality of splicing plates, which are spliced and assembled to form a plurality of lattice-shaped lattice frames, the anchor is connected to the bottom of the splicing plates, and the flexible brush is connected to the top of the splicing plates.
[0011] In this solution, by setting multiple splicing plates in the lattice frame, the lattice frame can have multiple lattice-shaped frames, so as to achieve large-area paving on the bottom of the water, increase the affected area of the seawater flow velocity, and thus better slow down the seawater velocity to protect the pile foundation.
[0012] Preferably, the anchors are arranged at the four corners of each square shape.
[0013] In this solution, anchors are provided at the four corners of each square shape, so that the force on the entire square frame can be more uniform, thereby making the square frame more stably fixed on the seabed.
[0014] Preferably, the anchor is an anchor nail.
[0015] In this solution, by setting the anchor pieces as anchor nails, on the one hand, the anchor nails can be used to penetrate into the soil to generate greater friction to enhance the stability of the seabed grass grid. On the other hand, the anchor nail construction process is relatively simple, and the seabed grass grid can be installed more conveniently.
[0016] Preferably, the outer surface of the anchor has a plurality of barbs protruding outward.
[0017] In this solution, by providing barbs on the outer surface of the anchor, the anchor can be easily driven into the seabed and difficult to pull out, thereby further enhancing the stability of the seabed grass grid fixation.
[0018] Preferably, the splicing plate is made of plastic.
[0019] In this solution, by setting the material of the splicing plate to plastic, the large flexibility of plastic can be utilized so that the lattice frame can adapt to the changing terrain conditions of the ocean seabed and fully fit the seabed.
[0020] Preferably, the flexible brush is a flexible strip.
[0021] In this solution, by setting the flexible brush as a flexible strip, the deformation amplitude of the flexible brush can be increased, thereby better slowing down the flow rate of seawater.
[0022] Preferably, the strip is made of plastic.
[0023] In this solution, by setting the strips to plastic, the strong durability of plastic can be utilized to achieve the long-term existence of the seabed grass grid in the marine environment. In comparison, conventional cement materials are easily damaged by salt in seawater and have poor durability.
[0024] Preferably, a plurality of the flexible brushes are evenly distributed on the top surface of the square body.
[0025] In this solution, by evenly distributing a plurality of flexible brushes on the top surface of the grid frame, the contact area between the flexible brushes and the seawater can be increased, and the even arrangement can make the force on the seabed grass grid even, thereby improving its stability.
[0026] The positive and progressive effects of the present invention are:
[0027] The marine pile foundation anti-scouring grass grid of the present invention, the grid body and the flexible brush constitute the main components of the marine pile foundation anti-scouring grass grid. On the one hand, by arranging the flexible brush on the grid body, the flexible brush can be deformed along the direction of the water flow under the action of a large water flow, thereby achieving the effect of slowing down the flow velocity of the marine water flow and changing the effect of the water flow directly scouring the seabed. On the other hand, since the flexible brush can be deformed along the direction of the water flow, the direct force on it can be reduced, so that the force transmitted to the grid body below is also reduced accordingly, making the seabed grass grid more solid as a whole and protecting the seabed grass grid from being washed away as a whole. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 A schematic diagram of the structure of the marine pile foundation anti-scouring grass grid according to an embodiment of the present invention
[0029] Figure 2 The assembly diagram of the marine pile foundation anti-scour grass grid according to the embodiment of the present invention
[0030] Figure 3 A partial enlarged view of the anti-scouring grass grid of the marine pile foundation according to an embodiment of the present invention
[0031] Figure 4The working principle diagram of the marine pile foundation anti-scour grass grid according to the embodiment of the present invention
[0032] Description of reference numerals:
[0033] Marine pile foundation anti-scour grass grid 1
[0034] Grid body 2
[0035] Grid frame 21
[0036] Splicing board 211
[0037] Anchor 22
[0038] Barb 221
[0039] Flexible Brush 3
[0040] Pile foundation 4
[0041] Seabed 5 DETAILED DESCRIPTION
[0042] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.
[0043] This embodiment provides a marine pile foundation anti-scouring grass grid 1, such as Figure 1 As shown, the marine pile foundation anti-scour grass grid 1 is laid on the seabed 5 around the pile foundation 4. The marine pile foundation anti-scour grass grid 1 includes a grid body 2 and a plurality of flexible brushes 3. The bottom of the grid body 2 is connected to the seabed 5. Figure 2 As shown, the marine pile foundation anti-scour grass grids 1 are distributed around the pile foundation 4, and a plurality of flexible brushes 3 are connected to the top of the grid body 2.
[0044] The grid body 2 and the flexible brush 3 constitute the main components of the marine pile foundation anti-scouring grass grid 1. On the one hand, by arranging the flexible brush 3 on the grid body 2, the flexible brush 3 can be deformed along the direction of the water flow under the action of a large water flow, thereby achieving the effect of slowing down the flow velocity of the ocean water flow and reducing the scouring effect of the water flow on the seabed 5. On the other hand, since the flexible brush 3 can be deformed along the direction of the water flow, the direct force on it can be reduced, so that the force transmitted to the grid body 2 below is also reduced accordingly, making the seabed grass grid more solid as a whole, and protecting the seabed grass grid from being washed away as a whole.
[0045] The protection principle of marine pile foundation anti-scouring grass grid 1 is: Figure 4As shown, the water flow slows down when passing through the flexible brush 3, and the sand and soil particles in the ocean are deposited in the two low flow rate areas (or no flow rate areas) before and after the grid body 2, protecting the marine pile foundation anti-scouring grass grid 1 from being washed away by the ocean current. In the central area inside the small unit of the marine pile foundation anti-scouring grass grid 1, the water flow can be cut, but its flow rate is low, reducing the scouring force.
[0046] In this embodiment, the bottom of the grid body 2 can be buried in the sand of the seabed 5 or placed on the seabed 5, so that the grass grid is distributed around the pile foundation 4. The flexible brushes 3 are evenly arranged on the top of the grid body 2, and the flexible brushes 3 can be connected to the grid body 2 by injection molding or mechanical fixing. In other embodiments, those skilled in the art can also use other flexible brush 3 fixing methods that they deem appropriate.
[0047] Specifically, Figure 3 As shown, the lattice body 2 includes a lattice frame 21 and a plurality of anchors 22, a plurality of flexible brushes 3 are connected to the top of the lattice frame 21, the tops of the plurality of anchors 22 are all connected to the bottom of the lattice frame 21, and the bottoms of the plurality of anchors 22 extend downward in a vertical direction and are inserted into the seabed 5.
[0048] Thus, by providing the lattice frame 21 in the lattice body 2, a cavity can be formed inside the lattice body 2, ensuring that the seabed 5 in the cavity of the lattice body 2 is not affected or less affected. In addition, by providing the anchor 22 in the lattice body 2, the depth of the lattice body 2 extending into the bottom of the seabed 5 can be increased, thereby improving the stability of the lattice body 2 placed on the seabed 5.
[0049] Specifically, the lattice frame 21 includes a plurality of splicing plates 211 , and the plurality of splicing plates 211 are spliced and assembled to form a plurality of lattice-shaped lattice frames 21 ; preferably, the plurality of splicing plates 211 are spliced and assembled to form a grid-shaped lattice frame 21 .
[0050] Therefore, by setting a plurality of splicing plates 211 in the lattice frame 21, the lattice frame 21 can have a plurality of lattice-shaped frames, thereby achieving large-area paving on the bottom of the water, increasing the affected area of the seawater flow velocity, and thus better slowing down the seawater velocity to protect the pile foundation 4.
[0051] Specifically, the material of the splicing plate 211 is a flexible material; preferably, the material of the splicing plate 211 is plastic. In other embodiments, those skilled in the art may also select other flexible materials that they deem appropriate.
[0052] Therefore, by setting the material of the splicing plate 211 to plastic, the greater flexibility of plastic can be utilized, so that the lattice frame 21 can adapt to the terrain changes of the ocean seabed 5 and fully fit the seabed 5.
[0053] Specifically, the anchor 22 is connected to the bottom of the splicing plate 211. Preferably, the four corners of each square shape are provided with an anchor 22. In other embodiments, those skilled in the art may also select the anchor arrangement position that they deem appropriate.
[0054] Therefore, by providing anchors 22 at the four corners of each lattice shape, the force on the entire lattice frame 21 can be more uniform, so that the lattice frame 21 can be fixed on the seabed 5 more stably.
[0055] Specifically, the anchor 22 is an anchor nail; preferably, the outer surface of the anchor 22 has a plurality of barbs 221 protruding outward.
[0056] Thus, the anchor 22 is an anchor nail, which can, on the one hand, utilize the anchor nail to penetrate into the soil to generate a large friction force to enhance the stability of the seabed grass grid fixation, and on the other hand, the anchor nail construction process is relatively simple, and the seabed grass grid can be installed more conveniently. By providing the barbs 221 on the outer surface of the anchor 22, the anchor 22 can be easily driven into the seabed 5 and difficult to be pulled out, thereby further enhancing the stability of the seabed grass grid fixation.
[0057] Specifically, the flexible brush 3 is connected to the top of the splicing plate 211. Preferably, a plurality of flexible brushes 3 are evenly distributed on the top surface of the lattice frame 21.
[0058] Therefore, by evenly distributing a plurality of flexible brushes 3 on the top surface of the grid frame 21, the contact area between the flexible brushes 3 and the seawater can be increased, and the even arrangement can make the force on the seabed grass grid even, thereby improving its stability.
[0059] Specifically, the flexible brush 3 is a flexible strip. Preferably, the material of the strip is plastic.
[0060] Therefore, by setting the flexible brush 3 as a flexible strip, the deformation amplitude of the flexible brush 3 can be increased. Thus, the flow rate of seawater can be better slowed down. The strip is made of plastic, and the strong durability of plastic can be utilized to achieve the long-term existence of the seabed grass grid in the marine environment. In comparison, conventional cement materials are easily damaged by salt in seawater and have poor durability.
[0061] This embodiment also provides a method for installing an anti-scouring grass grid 1 for a marine pile foundation, which specifically includes:
[0062] Step 1: laying seabed grass grids on the seabed 5 around the pile foundation 4;
[0063] Step 2: Press the anchor pieces 22 of the seabed grass grid to fully penetrate into the seabed 5.
[0064] The installation method of the marine pile foundation anti-scour grass grid 1 is simple to operate, suitable for underwater operations, and can be firmly fixed on the seabed 5.
[0065] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.
Claims
1. A marine pile foundation anti-scouring grass grid, characterized in that: It is laid on the seabed around the pile foundation. The marine pile foundation anti-scour grass grid includes a grid body and a plurality of flexible brushes. The bottom of the grid body is connected to the seabed and distributed around the pile foundation. The plurality of flexible brushes are connected to the top of the grid body.
2. The marine pile foundation anti-scouring grass grid according to claim 1, characterized in that: The lattice body includes a lattice frame and a plurality of anchors, wherein the plurality of flexible brushes are connected to the top of the lattice frame, the tops of the plurality of anchors are connected to the bottom of the lattice frame, and the bottoms of the plurality of anchors extend downward in a vertical direction and are inserted into the seabed.
3. The marine pile foundation anti-scouring grass grid according to claim 2, characterized in that: The lattice frame comprises a plurality of splicing plates, which are spliced and assembled to form a plurality of lattice-shaped lattice frames. The anchor is connected to the bottom of the splicing plate, and the flexible brush is connected to the top of the splicing plate.
4. The marine pile foundation anti-scouring grass grid according to claim 3, characterized in that: The anchors are arranged at the four corners of each square shape.
5. The marine pile foundation anti-scouring grass grid according to claim 2, characterized in that: The anchoring piece is an anchor nail.
6. The marine pile foundation anti-scouring grass grid according to claim 2, characterized in that: The outer surface of the anchor is provided with a plurality of barbs protruding outwards.
7. The marine pile foundation anti-scouring grass grid according to claim 3, characterized in that: The material of the splicing plate is plastic.
8. The marine pile foundation anti-scouring grass grid according to claim 1, characterized in that: The flexible brush is a flexible strip.
9. The marine pile foundation anti-scouring grass grid according to claim 8, characterized in that: The material of the strip is plastic.
10. The marine pile foundation anti-scouring grass grid according to claim 1, characterized in that: A plurality of the flexible brushes are evenly distributed on the top surface of the square body.