CN218580718U

CN218580718U - A bionical tree monomer structure for seabed scour prevention

Info

Publication number: CN218580718U
Application number: CN202222843733.4U
Authority: CN
Inventors: 朱嵘华; 谭哲; 田振亚; 陈鹏宇; 刘寒秋; 张融圣
Original assignee: Guangdong Huayun Offshore Wind Power Technology Co ltd
Current assignee: Guangdong Huayun Offshore Wind Power Technology Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-07
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a bionical tree monomer structure for seabed scour prevention, including balancing weight and cladding subassembly, the balancing weight setting is provided with bionical tree in the inner chamber of cladding subassembly on the surface of cladding subassembly, and bionical tree is made by flexible material, swings in the sea water, and the balancing weight is ballast thing or stone, and the cladding subassembly is frame or string bag. The large-scale processing, manufacturing and transportation are facilitated, the throwing in any direction can be realized, the single structure is adopted, the seabed throwing is facilitated, and the construction difficulty is reduced. In addition, the single body can be used alone or in combination, the overall failure rate can be reduced, the service reliability is improved, the manufacturing cost is low, and the large-scale application is facilitated.

Description

A bionical tree monomer structure for seabed scour prevention

Technical Field

The utility model belongs to the technical field of offshore wind power, specifically basic seabed erodees the protection, especially a bionical tree monomer structure for seabed scour prevention.

Background

The offshore wind turbine is high in structure, and develops towards the trend of larger diameter, longer wind turbine blades and higher tower drum, higher requirements are provided for the bearing capacity of a wind turbine foundation, and the design of the offshore wind turbine foundation becomes one of key technologies of offshore wind power construction. Under the action of waves and ocean currents, after an original seabed is provided with an offshore wind power foundation, a flow field near the foundation is disturbed, so that the shear stress on soil particles on the surface of the seabed is increased rapidly, and the soil body of the seabed around the foundation is scoured. The foundation of offshore wind power is required to bear the dead load of an upper structure and also bear the effects of wind load, wave and ocean current load, and due to the scouring of the wave and the ocean current, the flow rate around the foundation is accelerated to form a scouring pit, the limit bearing capacity of the foundation can be weakened by the formation of the scouring pit, the dynamic characteristic of the foundation is changed, and the failure of a wind power structure can be seriously caused. Meanwhile, when the offshore wind turbine operates, the resonance caused by the rotation of waves and the wind wheel needs to be avoided, the cost problem is considered, the change of the first natural vibration frequency of the offshore wind power structure can be caused by the scouring, the normal operation of the unit is influenced, and the stricter requirement on the design of the natural vibration frequency of the offshore wind turbine is provided.

For weakening the influence that offshore wind power basis received erodeing, select suitable protection device that erodees to this prevents that the displacement from taking place to erode the hole around the stake, thereby the security of guarantee structure, it is indispensable. At present, the most commonly used scouring protection device arranged on a mud surface in engineering is used for stone throwing protection around a foundation or sand is protected, but the long-term continuous engineering actual measurement finds that the protection effects of the two protection modes are not ideal, not only regular maintenance is needed, but also the operation and maintenance cost in the later period is increased, secondary scouring is easily formed, more serious influence is caused on the stability of a foundation structure, and the safety of an offshore wind turbine structure is endangered. The existing bionic grass scour prevention protection technology can enable seabed water flow to be subjected to the flexible viscous damping effect of the bionic grass when flowing through the bionic grass, so that the flow speed is reduced, and the scour capability of the water flow to the seabed is reduced; meanwhile, due to the reduction of the flow velocity and the blocking effect of the bionic grass, sediment carried in water flow is promoted to be deposited under the action of gravity, and seabed sandbars are formed in the bionic grass arrangement area, so that seabed scouring is slowed down, and secondary scouring is avoided.

However, the common bionic grass anti-scouring method is complex to install, needs to use an offshore crane ship to carry out offshore operation, and needs a diver to submerge into the sea bottom to anchor the bionic grass on the surface of the sea bed, so that the installation cost is high and the risk is high. This drives up the overall cost of such an installation and is therefore less used in the offshore wind erosion prevention field at present.

Therefore, complex and variable offshore hydrodynamic conditions and seabed geological conditions need to be considered, an efficient and economic offshore wind power foundation scour prevention protection device needs to be developed, and the problem of foundation scour of an offshore wind farm is solved.

SUMMERY OF THE UTILITY MODEL

In order to compensate the deficiency of the prior art, the utility model provides a bionic tree monomer structure's technical scheme for seabed scour prevention for seabed scour protection work.

The bionic tree monomer structure for preventing seabed scour comprises a balancing weight and a coating assembly, wherein the balancing weight is arranged in an inner cavity of the coating assembly, a bionic tree is arranged on the outer surface of the coating assembly, the bionic tree is of a flexible structure capable of swinging along with water flow, and the coating assembly is a frame or a net bag.

Furthermore, the frame is of a cuboid structure and is composed of a plurality of groups of supporting tubes, each surface of the frame is provided with a supporting frame, and the supporting frames are formed by the supporting tubes in a cross connection combination mode.

Furthermore, the bottom of the bionic tree is fixed on the supporting tube.

Further, the balancing weight is a ballast, the cladding assembly is a frame, and the ballast is limited in an inner cavity of the frame.

Further, the ballast is stone and/or concrete and/or sandbags.

Further, the balancing weight is the stone, and the cladding subassembly is the string bag, and the stone is filled in the string bag, and the bottom of bionical tree is fixed on the string bag.

Compared with the prior art, the utility model discloses there is following advantage:

the large-scale processing, manufacturing and transportation are facilitated, the throwing in any direction can be realized, the single structure is adopted, the seabed throwing is facilitated, and the construction difficulty is reduced. In addition, the single body can be used alone or in combination, the overall failure rate can be reduced, the service reliability is improved, the manufacturing cost is low, and the large-scale application is facilitated.

Drawings

FIG. 1 is a schematic structural view of embodiment 1;

FIG. 2 is a schematic view of the frame and ballast assembly of embodiment 1;

fig. 3 is a schematic structural diagram of embodiment 2.

In the figure: 1, a bionic tree; 2, a frame; 21 supporting a tube; 22 a support frame; 3, carrying out ballast; 4, a net bag; 5 stone blocks.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1

As shown in fig. 1-2, a bionic tree monomer structure for seabed scour prevention comprises a frame 2, wherein the frame is formed by connecting a plurality of groups of supporting tubes 21, in the embodiment, the frame is in a cuboid structure, a ballast 3 is arranged in an inner cavity of the frame 2, and a plurality of groups of bionic trees 1 are arranged on the surface of the frame 2. Each face of the frame 2 is provided with a support frame 22 through a support pipe 21, respectively. The support frame is composed of two groups of support pipes 21 which are crossed with each other. The frame 2 and the supporting frame 22 are of an integrally formed structure.

The bionic tree 1 is made of corrosion-resistant high-polymer flexible material and is used for interacting with ocean current, and sediment in the seawater is settled nearby the position of the bionic tree by utilizing the flow blocking effect of the bionic tree, so that a scouring pit is filled. The bottom end of the bionic tree 1 is fixed on the frame 2, the bionic tree 1 is made of a plurality of groups of flexible materials with silk ribbon structures, and the bionic tree 1 can swing along with seawater after being submerged into a seabed. The biomimetic trees 1 may be distributed on various surfaces of the frame 2. The bionic tree 1 and the frame 2 can be connected in various ways such as binding, bolts and the like. The bionic tree is a flexible high polymer material, the usable materials comprise plastics, synthetic fibers and the like, and the specific components comprise one or more of polymer materials such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, nylon, terylene, acrylon, vinylon, polyvinyl alcohol, polyester, polyimide, polyethylene naphthalate and the like.

The frame 2 is a high-strength corrosion-resistant truss structure and is used for bearing the bionic tree 1 and the ballast 3. The ballast 3 may be composed of one or more ballast cells for filling into the frame 2 to ballast the entire apparatus, reducing the movement of the apparatus on the seabed and allowing the apparatus to operate stably. The frame 2 structure includes but is not limited to a cuboid, a sphere, an ellipsoid, other irregularities, etc.

Ballast 3 may be comprised of one or more ballast monomers including, but not limited to, stone, concrete, sandbags, and the like. When the device is used, a single device can work in the flushing pit, and a plurality of devices can also work in the flushing pit in a clustering mode.

The frame-type bionic tree monomer is convenient for large-scale processing, manufacturing and transportation, can be thrown in any direction, and is convenient for seabed throwing by adopting a monomer structure. The size of frame can be adjusted according to the construction demand, has great size range.

The frame-type bionic tree monomer is convenient for an accurate matching laying scheme, the bionic tree monomer and the cluster thereof can adapt to different erosion pit forms, the frame-type bionic tree monomer and the cluster thereof can reduce the overall fault rate, and the service reliability is improved.

Example 2

As shown in figure 3, a bionic tree monomer structure for seabed scour prevention comprises a net bag 4, a stone block 5 is arranged in the net bag, and a bionic tree 1 is fixed on the net bag 4. A plurality of net-pocket type bionic tree monomer devices are integrally arranged in a scouring pit near the foundation of an offshore wind turbine, so that silt in ocean current is settled, the scouring pit is filled, and the restoration of the scouring pit and the foundation scour prevention are realized.

The net bag 4 is used for wrapping stones and bearing the bionic tree, and the net bag 1 is composed of a high polymer material soft net which is corrosion-resistant, anti-ultraviolet aging and strong in tensile strength. During stone 5 was arranged in filling into string bag 1, carried out the ballast to the device is whole, made the device steady operation, stone 5 can be independent piece stone, also can be the polylith rubble. The stone block 5 may be a naturally mined stone block, a stone block cast with artificial materials, a manufactured sandbag, or the like.

The bionic tree 1 is a corrosion-resistant, tensile and anti-aging high-polymer flexible material, is used for interacting with ocean currents, and utilizes the flow-blocking effect of the bionic tree to enable silt in seawater to settle near the position of the bionic tree and fill a scouring pit; the bionic trees 1 can be distributed on each position on the surface of the net bag 4; the bionic tree 1 and the net bag 4 can be connected in various modes such as binding and bonding. The size of string bag can be adjusted according to the construction demand, possess great size range.

A single device can work on the seabed needing scour prevention, and a plurality of devices can work on the seabed needing scour prevention in a cluster mode.

The bionic tree and the net bag are made of flexible high polymer materials and are common conventional flexible materials at the present stage. The usable materials comprise plastics, synthetic fibers and the like, and the specific components comprise one or more of polymer materials such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, chinlon, terylene, acrylon, vinylon, polyvinyl alcohol, polyester, polyimide, polyethylene naphthalate and the like.

The net bag type bionic tree monomer is convenient for large-scale processing, manufacturing and transportation, is flexible to use, is convenient for seabed throwing, can throw in any direction, and reduces the construction difficulty. In addition, the net-bag type bionic tree single body has flexible variability, and the single body and the cluster thereof can adapt to different erosion pit forms; the net-bag type bionic tree monomer and the net-bag type bionic tree cluster can reduce the overall failure rate, improve the service reliability, have low manufacturing cost and are beneficial to large-scale application.

Claims

1. The utility model provides a bionical tree monomer structure for seabed scour prevention which characterized in that includes balancing weight and cladding subassembly, and the balancing weight setting is provided with bionical tree (1) in the inner chamber of cladding subassembly on the surface of cladding subassembly, and bionical tree is for can be along with rivers wobbling flexible construction, and the cladding subassembly is frame (2) or string bag (4).

2. The bionic tree monomer structure for seabed scour prevention according to claim 1, wherein the frame (2) is of a cuboid structure and is composed of a plurality of groups of supporting tubes (21), each surface of the frame (2) is provided with a supporting frame (22), and the supporting frames (22) are formed by cross-connecting and combining the supporting tubes (21).

3. A biomimetic tree monolithic structure for seabed scour prevention according to claim 2, characterized in that the bottom of the biomimetic tree (1) is fixed on the support pipe (21).

4. The bionic tree monomer structure for seabed scour prevention according to claim 2, wherein the counterweight block is a ballast (3), the cladding component is a frame (2), and the ballast (3) is limited in an inner cavity of the frame (2).

5. A biomimetic tree monolithic structure for seabed scour prevention according to claim 4, characterized in that the ballast (3) is stone and/or concrete and/or sandbag.

6. The monomeric structure of a bionic tree for seabed scour prevention according to claim 1, wherein the clump weight is a stone (5), the wrapping component is a net bag (4), the stone (5) is filled in the net bag (4), and the bottom of the bionic tree (1) is fixed on the net bag (4).