CN113718839B

CN113718839B - Offshore wind power foundation with turbulence strips

Info

Publication number: CN113718839B
Application number: CN202111089015.6A
Authority: CN
Inventors: 邱旭; 刘鑫; 闫姝
Original assignee: Huaneng Clean Energy Research Institute
Current assignee: Huaneng Guangdong Energy Development Co ltd; Huaneng Clean Energy Research Institute; Huaneng Guangdong Shantou Offshore Wind Power Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-09-06
Anticipated expiration: 2041-09-16
Also published as: CN113718839A

Abstract

The invention discloses an offshore wind power foundation with turbulence strips, which comprises a pile foundation and the turbulence strips, wherein the pile foundation comprises a first part and a second part which are connected with each other in the length direction of the pile foundation, the turbulence strips are at least arranged on the first part, the turbulence strips protrude from the outer peripheral surface of the first part along the first direction, the extension direction of the turbulence strips is parallel to the outer peripheral surface of the first part, the outer diameter of the first part is D, the extension length of the turbulence strips is more than or equal to 0.1D, and the ratio of the length to the width of the turbulence strips is more than or equal to 5. According to the invention, the disturbing fluid is arranged on the pile foundation, and the disturbing channel between the pile foundations is utilized to disturb the flow of sea waves and tides, so that the effect of dissipating tidal current energy is achieved, the purpose of active scour prevention is achieved, the soil around the pile foundation is effectively protected, and the formation of a scour pit is avoided.

Description

Offshore wind power foundation with turbulence strips

Technical Field

The application relates to the technical field of new energy, in particular to an offshore wind power foundation with turbulence strips.

Background

Wind energy is increasingly regarded by human beings as a clean and harmless renewable energy source. Compared with land wind energy, offshore wind energy resources not only have higher wind speed, but also are far away from a coastline, are not influenced by a noise limit value, and allow the unit to be manufactured in a larger scale.

The offshore wind power foundation is the key point for supporting the whole offshore wind power machine, the cost accounts for 20-25% of the investment of the whole offshore wind power, and most accidents of offshore wind power generators are caused by unstable pile foundation. Due to the action of waves and tide, silt around the offshore wind power pile foundation can be flushed and form a flushing pit, and the flushing pit can influence the stability of the pile foundation. In addition, the water flow mixed with silt near the surface of the seabed continuously washes the pile foundation, corrodes and destroys the surface of the pile foundation, and can cause the collapse of the offshore wind turbine unit in serious cases. The anti-scouring device of the currently adopted offshore wind power pile foundation is mainly a riprap protection method. However, the integrity of the riprap protection is poor, and the maintenance cost and the workload in the application process are large.

Disclosure of Invention

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

due to the action of sea waves and tides, a phenomenon of scouring pits occurs around the foundation of the offshore wind power pile. The scouring phenomenon is a complex coupling process involving the interaction of water flow, sediment and structures. The main reason of causing the scouring is horseshoe-shaped vortex generated around the pile foundation, the horseshoe-shaped vortex is generated due to the obstruction of the pile foundation when seawater flows, when the sea water flows towards the pile foundation, the wave current presents a downward rolling and excavating vortex structure, the vortex structure lifts up the sediment on the seabed, and further brings the sediment away from the place around the pile foundation, a scouring pit is formed, the depth of the pile foundation is shallow due to the formation of the scouring pit, the vibration frequency of a cylinder is reduced, the pile foundation is over-fatigue is caused slightly, and the fracture accident is caused seriously.

The present application is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the offshore wind power foundation with the turbulence strips has the advantages that the effect of dissipating tidal current energy is achieved, the purpose of active scour prevention is achieved, soil around the pile foundation is effectively protected, and formation of scour pits is avoided.

Offshore wind power foundation with spoiler according to this application includes:

a pile foundation including a first portion and a second portion interconnected in a length direction thereof, the second portion being buried in a seabed, the seabed having a seabed surface, the first portion being located above the seabed surface;

the utility model provides a pile foundation, the vortex strip is established at least on the first portion, the vortex strip is followed the outer peripheral face of first portion is outstanding along first direction, first direction quadrature in the length direction of pile foundation, the extending direction of vortex strip with the outer peripheral face of first portion is parallel, and the external diameter of first portion is D, the extending length more than or equal to 0.1D of vortex strip, the ratio more than or equal to 5 of the length and the width of vortex strip.

According to the offshore wind power foundation with the turbulence strips, the turbulence strips are arranged on the first part of the pile foundation and actively disturb the tide towards the pile foundation, the flow speed and the direction of the tide are locally changed, so that the energy of the tide is dissipated to a certain extent, the arrangement of the turbulence strips plays a role in energy dissipation and impact reduction, the formation of horseshoe-shaped vortexes near the pile foundation is inhibited, the soil around the pile foundation is effectively protected, and the formation of scouring pits is avoided. Compared with the stone throwing protection method in the prior art, the stone throwing protection method has the advantages of stronger stability, better anti-scouring effect and better reliability.

In some embodiments, the spoiler strips surround the first portion, the spoiler strips are multiple, and the spoiler strips are arranged at intervals in the length direction of the pile foundation.

In some embodiments, the distance between two adjacent spoiler strips decreases towards the direction close to the surface of the sea bed.

In some embodiments, the spoiler is annular, or

The opposite end of the spoiler strip in the extending direction of the spoiler strip is arranged at intervals from the other end of the spoiler strip.

In some embodiments, the spoiler strips extend along the length direction of the pile foundation, the spoiler strips are multiple, and the spoiler strips are arranged at intervals in the circumferential direction around the pile foundation.

In some embodiments, the outer circumferential surface of the first portion includes a front surface facing the direction of the tidal current, a back surface opposite to the front surface, and two side surfaces, and a distance between adjacent spoiler strips distributed on the front surface and the back surface is smaller than a distance between adjacent spoiler strips distributed on the two side surfaces.

In some embodiments, the size of the spoiler strips in the first direction is the height of the spoiler strips, the number of the spoiler strips is multiple, and the heights of at least two of the spoiler strips are different.

In some embodiments, the spoiler is further disposed on the second portion.

In some embodiments, the cross-sectional peripheral profile of the spoiler strip has a shape that includes one or more of a semi-circle, a triangle, or a square.

In some embodiments, the spoiler strips having different shapes of cross-sectional outer circumferential profiles are alternately arranged in the length direction of the pile foundation and/or in the circumferential direction around the pile foundation.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

Fig. 1 is a schematic view of an uneven distribution of spoiler in an embodiment of the present application.

Fig. 2 is a schematic view of uniform distribution of spoiler strips according to an embodiment of the present application.

Fig. 3 is a schematic view of the uneven distribution of the spoiler in the second embodiment of the present application.

Fig. 4 is a schematic view of uniform distribution of spoiler in the second embodiment of the present application.

Fig. 5 is a schematic diagram of an uneven distribution of spoiler strips according to a third embodiment of the present application.

Fig. 6 is a schematic view of uniform distribution of spoiler in the third embodiment of the present application.

Fig. 7 is a schematic diagram of an uneven distribution of spoiler in the fourth embodiment of the present application.

Fig. 8 is a top view of fig. 7.

Fig. 9 is a schematic diagram of uniform distribution of spoiler in the fourth embodiment of the present application.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a schematic diagram of an uneven distribution of spoiler in an embodiment of the present application.

Fig. 12 is a top view of fig. 11.

Fig. 13 is a schematic diagram of uniform distribution of spoiler strips according to an embodiment of the present application.

Fig. 14 is a top view of fig. 13.

FIG. 15 is a schematic view of a combination of spoilers of different heights according to an embodiment of the present invention.

Fig. 16 is a top view of fig. 15.

FIG. 17 is a schematic diagram of an uneven distribution of spoiler in accordance with an embodiment of the present application.

Fig. 18 is a top view of fig. 17.

FIG. 19 is a schematic diagram of a uniform distribution of spoiler strips according to an embodiment of the present application.

Fig. 20 is a top view of fig. 19.

FIG. 21 is a schematic view of the combination of spoiler strips with different heights according to the sixth embodiment of the present application.

Fig. 22 is a top view of fig. 21.

FIG. 23 is a schematic diagram of a combination of spoilers with different structures according to an embodiment of the present invention.

Fig. 24 is a top view of fig. 23.

Reference numerals:

the pile foundation 001, the first part 10, the spoiler strip 20, the spoiler channel 30, the second part 40.

The specific implementation mode is as follows:

reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The application provides an offshore wind power basis with spoiler, including pile foundation 001 and spoiler 20, pile foundation 001 includes first portion 10 and the second portion 40 of interconnect on its length direction, and the second portion 40 buries in the seabed, and the seabed has the sea bed face, and first portion 10 is located the sea bed face top.

The turbulence strips 20 are at least arranged on the first part 10, the turbulence strips 20 protrude from the outer peripheral surface of the first part 10 along a first direction, the turbulence strips 20 protrude from the outer peripheral surface of the first part 10 along the first direction for actively disturbing the flow impacting the pile foundation, the flow velocity and the direction of the flow are locally changed, so that the energy of the flow can be dissipated to a certain extent, the first direction is orthogonal to the length direction of the pile foundation, the extending direction of the turbulence strips 20 is parallel to the outer peripheral surface of the first part 10, the outer diameter of the first part is D, the value range of D is 5m-8m, the preferable range of D is 6m-8m in the embodiment, specifically, D can be 7m, the extending length of the turbulence strips 20 is more than or equal to 0.1D, the ratio of the length to the width of the turbulence strips 20 is more than or equal to 5, the ratio of the length to the width of the turbulence strips 20 is preferably more than or equal to 10 in the embodiment, the ratio of the length to the width of the specific spoiler strip 20 is 12, 14 or 16, etc. For example, the first direction may be radial to the pile foundation 001, or the first direction may be horizontal.

This application sets up the vortex strip through setting up at least on the first portion and carries out initiative vortex to the trend of stake basis, and the local velocity of flow and the direction that changes the trend make the energy of trend can dissipate to a certain extent, and the setting of vortex strip has played the energy dissipation and has subtracted the effect of dashing, has restrained near the formation of the horse shoe shape swirl of stake basis, has protected the soil body around the stake basis effectively, avoids scouring the formation in hole. Specifically, because the turbulence strips protrude from the outer peripheral surface of the first part towards the direction far away from the outer peripheral surface of the first part, when the tidal current contacts the turbulence strips, the turbulence strips can break up the tidal current, the flow speed and the direction of the tidal current are locally changed, the energy of the tidal current can be dissipated to a certain extent, and a large horseshoe-shaped vortex cannot be generated in front of the pile foundation, so that the formation of the horseshoe-shaped vortex is restrained from the source.

In some embodiments, the spoiler strips 20 surround the first portion 10, the spoiler strips 20 are plural, and the plurality of spoiler strips 20 are spaced apart in the length direction of the pile foundation 001. The plurality of turbulence strips 20 are arranged at intervals along the length direction of the pile foundation 001, so that a plurality of turbulence channels 30 are formed among the plurality of turbulence strips 20, the turbulence channels 30 are utilized to break up the tidal current, the flow speed and the direction of the tidal current are changed, and the energy of the tidal current is dissipated to a certain extent.

Further, during the actual use of the offshore wind power foundation, the position of the first section 10 closer to the surface of the sea bed is more likely to be impacted by the tide, and the probability of generating horseshoe vortices is higher. Therefore, in some embodiments, the distance between two adjacent turbulence strips 20 is reduced towards the direction close to the sea bed surface, in the length direction of the pile foundation 001, the arrangement distance between the turbulence strips 20 is gradually reduced from top to bottom, the number of the turbulence strips at the bottom of the pile foundation 001 is increased, the anti-scouring capability at the bottom of the pile foundation is improved, and the anti-scouring capability and the practicability of the offshore wind power foundation are enhanced.

Further, the shape of vortex strip 20 is the annular, and annular vortex strip 20 arranges in proper order along stake basis 001 length direction top-down, and it should be noted that vortex strip 20 still can be for the shape of cross section periphery profile including one or more in semi-circular, triangle-shaped or square, utilizes the vortex strip combination of multiple different structural shape, improves whole scheme flexibility greatly.

In other embodiments, the spoiler 20 can also encircle and set up on second portion 40, also set up spoiler 20 through at second portion 40, even form on the sea bed surface near marine wind power basis and erode the hole, the formation that erodes the hole makes second portion 40 that originally is located below the sea bed surface expose, the spoiler structure that sets up on second portion 40 can reduce the scouring effect effectively, prevents to erode the hole and continues downwardly extending, has strengthened the anti-scouring performance on marine wind power basis.

Further, a plurality of turbulence strips 20 can also surround the first part 10 and the second part 40 at the same time, so that the turbulence strips are integrally arranged on the whole pile foundation, and the integral anti-scouring capability of the pile foundation is greatly improved.

In other embodiments, the spoiler 20 is spaced apart from one another at opposite ends in the extending direction thereof, and two spoiler 20 adjacent to each other in the length direction of the first portion 10 are offset. Alternatively, two spoiler strips 20 adjacent in the circumferential direction around the first portion 10 are staggered. The irregularity of the turbulent flow structure arranged on the first part 10 is increased, and the energy dissipation and impact reduction effects of the turbulent flow structure and the anti-scouring capacity of the offshore wind power foundation are enhanced.

In some embodiments, the size of the spoiler strip 20 in the first direction is the height of the spoiler strip, the spoiler strips 20 are multiple, at least two spoiler strips 20 in the plurality of spoiler strips 20 are different in height, that is, the spoiler strips 20 are arranged in a staggered manner, the irregularity of the spoiler strips 20 arranged on the first portion 10 is further increased, and the energy dissipation and impact reduction effect of the spoiler strips 20 and the anti-scouring capability of the offshore wind power foundation are enhanced.

In other embodiments, the vortex strips 20 extend along the length direction of the pile foundation 001, the vortex strips 20 are multiple, the multiple vortex strips 20 are arranged at intervals in the circumferential direction around the pile foundation, the multiple vortex strips 20 arranged along the circumferential direction of the pile foundation 001 form multiple vortex channels 30 which are mutually spaced and parallel to the length direction of the pile foundation 001, the vortex channels 30 between the multiple vortex strips 20 are used for scattering the tide, the flow speed and the direction of the tide are locally changed, the energy of the tide is dissipated to a certain degree, a large horseshoe vortex cannot be generated in front of the pile foundation 001, and therefore the formation of the horseshoe vortex is suppressed at the source.

Further, the outer peripheral surface of the first portion 10 includes a front surface facing the tidal current direction, a back surface opposite to the front surface, and two side surfaces, and the distance between the adjacent spoiler strips 20 distributed on the front surface and the back surface is smaller than the distance between the adjacent spoiler strips 20 distributed on the two side surfaces, so that the density of the spoiler strips 20 distributed on the front surface and the back surface is greater than the density of the spoiler strips 20 distributed on the two side surfaces. That is to say, the spoiler strips 20 can be densely arranged on the front face of the first part 10 facing the tidal current direction and the back face opposite to the front face, and a small number of spoiler strips 20 are arranged on the two sides of the first part, so that the offshore wind power foundation can have strong anti-scouring capability, the manufacturing cost can be reduced, and the manufacturing difficulty can be reduced.

Further, the density of the spoiler strips 20 distributed on the front surface may also be made greater than the density of the spoiler strips 20 distributed on the rear surface.

Further, the plurality of turbulence channels 30 are a plurality of mutually spaced turbulence channels 30, or are mutually communicated turbulence channels 30, and the plurality of spaced turbulence channels 30 and/or the communicated turbulence channels 30 can be arranged on a pile foundation, and the plurality of spaced turbulence channels 30 are used for shunting sea waves and tides, so that the directions of the sea waves and the tides are changed, and the impact force of the dispersed sea waves and tides is achieved. The plurality of mutually communicated turbulent flow channels 30 form a continuous turbulent flow channel, and the continuous turbulent flow channel is utilized to ensure that sea waves and tides move directionally along the turbulent flow channel, so that the flowing direction of the sea waves and the tides is changed, and the pile foundation protection effect is further achieved.

Further, a plurality of turbulence strips 20 can be arranged on the pile foundation 001 in parallel, and a plurality of turbulence channels 30 which are spaced from each other are formed between the plurality of turbulence strips 20 which are arranged in parallel; the plurality of turbulence strips 20 can also be arranged on the pile foundation 001 according to a certain rule, and only the plurality of turbulence strips 20 need to form the continuous turbulence channel 30, for example, the plurality of turbulence strips 20 are arranged on the pile foundation 001 in a staggered manner according to a certain angle (the angle between the turbulence strips and the length direction of the pile foundation), the continuous turbulence channel 30 is formed between the plurality of turbulence strips 20 arranged in a staggered manner, the angle range between the turbulence strips 20 and the length direction of the pile foundation 001 is between 0 and 90 degrees, the angle range between the turbulence strips 20 and the length direction of the pile foundation 001 in the embodiment is preferably 10 to 30 degrees, specifically, 15 degrees can be selected, and the turbulence strips 20 are arranged on the pile foundation in the length direction of the pile foundation according to an included angle of 15 degrees.

It should be noted that the spoiler 20 may be a regular body or an irregular body, and the irregular body may preferably be the spoiler 20 having a wave-shaped cross-sectional shape. The combination of multiple regular bodies and/or irregular bodies can be selected for the plurality of turbulence strips 20, a single regular body or irregular body can be arranged on the pile foundation 001, meanwhile, the plurality of turbulence strips 20 in different shapes can be alternately arranged in the axial direction and/or the circumferential direction of the pile foundation, the plurality of turbulence strips in different setting forms and the plurality of turbulence strips matched with different structural shapes can form multiple design schemes, the pile foundation can adapt to pile foundations with different depths, the scouring with different strengths is met, and the flexibility of the design of the whole scheme is high.

In some embodiments, in the length direction of the pile foundation 001 and/or in the circumferential direction around the pile foundation, the turbulence strips 20 having cross section peripheral profiles of different shapes are alternately arranged, that is, the turbulence strips 20 having cross section peripheral profiles of different shapes can be alternately arranged at intervals in the length direction of the pile foundation, for example, turbulence strips having different structures like a circle, a triangle, or a square can be selected, or the turbulence strips 20 of different shapes are alternately arranged along the circumferential direction of the pile foundation 001, or a part of the turbulence strips 20 of different shapes can be alternately arranged along the length direction of the pile foundation 001, and a part of the turbulence strips 20 of different shapes are alternately arranged along the circumferential direction of the pile foundation 001, so that the anti-erosion capability of the pile foundation 001 can be greatly improved by irregularly arranging the turbulence strips 20, and the pile foundation is protected.

Several specific embodiments of the present application are specifically set forth below in conjunction with fig. 1-24:

the first embodiment is as follows:

as shown in fig. 1-2, the offshore wind power foundation with the spoiler in this embodiment includes a pile foundation 001 and a plurality of spoiler strips 20, and a plurality of spoiler strips 20 set up on pile foundation 001 and form a plurality of spoiler channels 30 between a plurality of spoiler strips 20, and a plurality of spoiler channels 30 disturb and change the flow direction of wave and tide, avoid wave and tide to directly erode the pile foundation, and then play the effect of protection to pile foundation 001.

The spoiler strips 20 are wound on the first portion 10, the spoiler strips 20 radially protrude from the outer circumferential surface of the first portion 10, and a plurality of spoiler channels 30 are formed between the protruding portions of the plurality of spoiler strips 20. The plurality of turbulence strips 20 are arranged along the length direction of the pile foundation 001, the arrangement length range of the turbulence strips 20 along the length direction of the pile foundation 001 is between 1D and 3D, D is the outer diameter of the first portion, the value range of D is between 5m and 8m, the arrangement length range of the turbulence strips 20 along the length direction of the pile foundation 001 in the embodiment is preferably between 6m and 18m, specifically, the arrangement length of the turbulence strips 20 along the length direction of the pile foundation 001 in the embodiment can be selected to be 10m, meanwhile, the ratio of the arrangement length of the turbulence strips 20 to the radial protrusion width is greater than or equal to 5, and the ratio of the arrangement length of the turbulence strips 20 to the radial protrusion width in the embodiment can be selected to be 6.

The shape of vortex strip 20 is annular, and is a plurality of vortex strip 20 is in interval arrangement is gone up to the length direction of pile foundation 001, and a plurality of annular vortex strips 20 are along pile foundation 001 length direction interval arrangement in proper order promptly, and a plurality of annular vortex strips 20 interval arrangement in proper order form a plurality of mutual intervals and follow the vortex passageway 30 that pile foundation length direction top-down width reduces gradually, and the vortex direction of vortex passageway 30 and pile foundation circumference syntropy, arrange a plurality of vortex strips 20 through the closely knit interval in pile foundation 001 bottom for pile foundation bottom vortex ability reinforcing has improved the protective capacities of pile foundation bottom.

The turbulent flow strips 20 are regular bodies in a single shape, the regular bodies are annular turbulent flow strips with triangular cross sections in the peripheral outline shape, the annular turbulent flow strips with the triangular cross sections are sequentially arranged at intervals along the axial direction of a pile foundation to form a plurality of turbulent flow channels 30, the setting density of the annular turbulent flow strips is from top to bottom to dense, namely the setting distance between every two adjacent annular turbulent flow strips is sequentially reduced from top to bottom, the setting distance range between every two adjacent annular turbulent flow strips is 0.3D-1.5D, in the embodiment, 7m is selected as D, the setting distance range between every two adjacent annular turbulent flow strips is preferably 0.4D-1.1D, the specific distance range value is 2.8m-7.7m, and the specific arrangement mode can gradually reduce the setting distance between every two adjacent turbulent flow strips according to 7.7m, 7.4m, 7m, 6.8m, 6.3m, … … and 2.8 m.

It should be noted that in this embodiment, the plurality of annular turbulence strips 20 can be arranged at equal intervals along the length of the pile foundation 001, the plurality of annular turbulence strips arranged at equal intervals can form a plurality of turbulence channels with the same width, impact force caused by sea waves and tides can be dispersed through the plurality of turbulence channels with the same width, the flow direction of the sea waves and the tides is changed, and then protection on the pile foundation 001 is achieved.

It should be noted that in this embodiment, the spoiler strips 20 may also be arc spoiler strips, and a plurality of arc spoiler strips are staggered axially or circumferentially along the pile foundation 001, so that a continuous spoiler channel 30 is formed between the plurality of arc spoiler strips.

It should be noted that, a plurality of vortex strips 20 optional arc vortex strips and cross sectional shape are the combination of triangle-shaped's annular vortex strip, and arc vortex strip and annular vortex strip arrange on the pile foundation along pile foundation axial or circumference in turn, set up a plurality of arc vortex strips between adjacent annular vortex strip to staggered arrangement between a plurality of arc vortex strips makes and forms continuous vortex passageway between adjacent annular vortex strip and a plurality of arc vortex strip.

It should be noted that, can also arrange the vortex passageway of above-mentioned continuous type in proper order on the pile foundation, be about to two annular vortex strips and a plurality of arc vortex strips and arrange on the pile foundation as a whole vortex body, arrange a plurality of foretell vortex bodies in proper order on the pile foundation, can arrange according to equidistant, also can be according to by dredging to close the setting, make and form a plurality of mutual spaced vortex passageways between a plurality of adjacent vortex bodies, the vortex passageway of the internal formation continuous type of vortex, and then arrange on the pile foundation through with continuous vortex passageway and interval vortex passageway, improve the anti-scouring ability on pile foundation greatly.

It should be noted that the dimension of the spoiler 20 in the radial direction of the pile foundation 001 is the height of the spoiler, at least two of the plurality of spoiler 20 have different heights, and the height difference formed between the spoiler having different heights is used to help to reduce the impact force of the sea waves and the tides when the flow direction of the sea waves and the tides is changed.

Example two

As shown in fig. 3-4, the turbulence strips 20 can also be semicircular annular turbulence strips in the shape of the peripheral outline of the cross section, the plurality of turbulence strips 20 can be arranged in sequence along the axial direction of the pile foundation 001 from top to bottom in a sparse-to-dense arrangement mode, the plurality of turbulence strips 20 are arranged along the axial direction of the pile foundation 001, the turbulence strips 20 are densely arranged at the bottom of the pile foundation 001, a plurality of turbulence channels can be formed, the scouring strength of sea waves and tides can be weakened through the plurality of turbulence channels, and the protection capability at the bottom of the pile foundation 001 is further improved. And at least two turbulence strips 20 with different heights (the size in the radial direction of the pile foundation) are arranged in the plurality of turbulence strips 20, in the embodiment, two turbulence strips 20 with different heights are selected, the specific height range is 1D-3D, the value of D in the embodiment is 6.5m, the height range value is 6.5m-19.5m, and the turbulence strips with the heights of 7m and 10m can be selected specifically.

It is noted that a plurality of spoiler strips 20 may also be provided as spoiler strips having the same height (dimension in the radial direction of the pile foundation).

It should be noted that the plurality of spoiler strips 20 may also be arranged on the pile foundation uniformly in sequence according to an arrangement form that is equally spaced from top to bottom along the axial direction of the pile foundation.

It should be noted that the plurality of spoiler strips 20 may be arranged in combination of the annular spoiler strip having the triangular cross-sectional shape in the first embodiment and the annular spoiler strip having the semicircular cross-sectional shape in the present embodiment.

The other structure is the same as the first embodiment.

EXAMPLE III

Specifically, as shown in fig. 5-6, in the offshore wind power foundation with the turbulence strips, the turbulence strips 20 may also be annular turbulence strips with rectangular cross-sectional peripheral profiles, and the plurality of turbulence strips 20 may be sequentially arranged along the axial direction of the pile foundation in an arrangement form from sparse to dense from top to bottom along the axial direction of the pile foundation; the plurality of turbulence strips 20 are at least two turbulence strips 20 with different heights (the size in the radial direction of the pile foundation), preferably five turbulence strips 20 with different heights are selected in the embodiment, the specific height range is 0.1m-0.5m, the specific height ranges are 0.1m, 0.15m, 0.2m, 0.3m and 0.45m, and the turbulence strips with the heights of 0.1m, 0.15m, 0.2m, 0.3m and 0.45m are sequentially arranged from top to bottom along the axial direction of the pile foundation.

It should be noted that the plurality of turbulence strips 20 may also be configured as turbulence strips having the same height (size in the radial direction of the pile foundation), the set height is preferably 0.25D to 0.3D, the value of D is 5m, the specific range of the set height is 0.75m to 1.5m, in this embodiment, the height is o.8m, and the plurality of turbulence strips having the height of 0.8m are sequentially arranged from top to bottom along the axial direction of the pile foundation.

It should be noted that the plurality of turbulence strips 20 can also be arranged on the pile foundation 001 uniformly in sequence according to an arrangement form from top to bottom at equal intervals along the axial direction of the pile foundation, and the plurality of turbulence strips 20 with different heights are arranged on the pile foundation 001 at equal intervals, so that the anti-scouring capability of the pile foundation 001 can be enhanced to a certain extent.

It should be noted that the plurality of spoiler strips 20 may also be combined and arranged by using one or more of the annular spoiler strips with a triangular cross section in the first embodiment, the annular spoiler strips with a semicircular cross section in the second embodiment, and the annular spoiler strips with a rectangular cross section in the present embodiment.

The other structure is the same as the first embodiment.

Example four

Specifically, as shown in fig. 7-10, the offshore wind power foundation with the spoiler, the shape of the spoiler 20 is columnar, the spoiler 20 extends along the axial direction of the pile foundation, the plurality of spoiler 20 are sequentially arranged along the circumferential direction of the pile foundation at intervals, and a plurality of spoiler channels 30 which are mutually arranged at intervals and are axially arranged along the pile foundation 001 are formed between the plurality of spoiler 20.

In the embodiment, the flow disturbance strips 20 are columnar flow disturbance strips with semicircular cross section peripheral profiles, and the columnar flow disturbance strips are sequentially arranged at intervals along the circumferential direction of the pile foundation; the outer peripheral face of first portion 10 includes the front towards trend direction in stake basis 001, openly relative back and two sides, and the interval of the adjacent vortex strip 20 that distributes on front and the back is less than the interval of the adjacent vortex strip 20 that distributes on two sides, utilizes the closely knit interval vortex channel of closely knit vortex strip formation that arranges on front and the back, improves the vortex ability on stake basis front and back, and then has improved the anti-scouring ability on stake basis front and back.

It should be noted that a plurality of column vortex strips still can follow pile foundation 001 circumference equidistant arrangement, protect pile foundation 001 through a plurality of vortex passageways 30 that form between a plurality of column vortex strips, strengthen pile foundation 001's protective capacities.

At least two turbulence strips 20 with different heights (the size in the radial direction of the pile foundation) are arranged in the plurality of turbulence strips 20, in the embodiment, four turbulence strips 20 with different heights can be selected and arranged on the pile foundation 001, and the four turbulence strips with different heights are sequentially arranged according to the circumferential interval angles of 15 degrees, 30 degrees and 45 degrees.

It should be noted that a plurality of turbulence strips 20 may also be provided as turbulence strips 20 having the same height (size in the radial direction of the pile foundation), the height of which is preferably 0.3m, and 8, 7 or 6 turbulence strips are uniformly arranged in the circumferential direction.

The other structure is the same as the first embodiment.

EXAMPLE five

Specifically, as shown in fig. 11 to 16, in the offshore wind turbine foundation with the spoiler strips, the spoiler strips 20 are columnar spoiler strips with a triangular cross section and a peripheral outline, the plurality of spoiler strips 20 are arranged along the circumferential direction of the pile foundation 001, the plurality of spoiler strips 20 are densely arranged at the front and back positions of the pile foundation 001, and the spoiler strips at the two sides of the pile foundation 001 are arranged at equal intervals, that is, the whole foundation is arranged in a dense-sparse-dense manner.

It should be noted that the spoiler strips 20 may also be equally spaced circumferentially along the pile foundation 001.

The plurality of turbulence strips 20 can be selected from one or more height (size in the radial direction of the pile foundation), and in this embodiment, the turbulence strips are selected from two different height (size in the radial direction of the pile foundation), specifically as shown in fig. 11, that is, the whole structure adopts a combination form of one large and one small, and the cross-sectional shapes of the two different heights are triangular columnar turbulence strips arranged on the pile foundation 001 in a staggered manner in sequence.

It should be noted that the flow-disturbing strips 20 may also be combined with the columnar flow-disturbing strips with semicircular cross-sectional shapes in the fourth embodiment and the columnar flow-disturbing strips with triangular cross-sectional shapes in the third embodiment.

The other structure is the same as the fourth embodiment.

EXAMPLE six

Specifically, as shown in fig. 17-23, in the offshore wind power foundation with the spoiler strips, the spoiler strips 20 are columnar spoiler strips having a rectangular cross section and a peripheral outline, the plurality of spoiler strips 20 are arranged along the circumferential direction of the pile foundation 001, the plurality of spoiler strips 20 are densely arranged at the front and back of the pile foundation, and the spoiler strips at the two sides of the pile foundation are arranged at equal intervals, that is, the whole foundation is arranged in a dense-sparse-dense manner.

It should be noted that the spoiler strips 20 may also be equally spaced circumferentially along the pile foundation.

The plurality of turbulence strips 20 can be selected from one or more height turbulence strips, and in this embodiment, the turbulence strips are selected from two kinds of turbulence strips 20 with different heights (the radial size of the pile foundation), that is, the whole pile foundation 001 is provided with columnar turbulence strips with rectangular cross sections.

It should be noted that the spoiler 20 may also be combined with a cylindrical spoiler having a semicircular cross section in the fourth embodiment, a cylindrical spoiler having a triangular cross section in the fifth embodiment, or a cylindrical spoiler having a rectangular cross section in the present embodiment; for example, a combination form of the columnar turbulence strips with the rectangular cross section and the columnar turbulence strips with the triangular cross section is selected, and the columnar turbulence strips with the rectangular cross section and the columnar turbulence strips with the triangular cross section are alternately arranged along the circumferential direction of the pile foundation.

The other structure is the same as the fourth embodiment.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An offshore wind power foundation with spoiler strips, comprising:

the pile foundation comprises a pile foundation, a turbulence strip, a first part and a second part, wherein the first part is arranged on the pile foundation, the second part is arranged on the pile foundation, the turbulence strip protrudes from the outer peripheral surface of the first part along a first direction, the first direction is orthogonal to the length direction of the pile foundation, the extension direction of the turbulence strip is parallel to the outer peripheral surface of the first part, the outer diameter of the first part is D, the extension length of the turbulence strip is more than or equal to 0.1D, and the ratio of the length to the width of the turbulence strip is more than or equal to 5;

the pile foundation is provided with a plurality of turbulence strips, the turbulence strips extend along the length direction of the pile foundation, the plurality of turbulence strips are arranged at intervals in the circumferential direction around the pile foundation, and one ends of the turbulence strips, which are opposite to each other in the extending direction, are arranged at intervals;

the outer peripheral surface of the first part comprises a front surface facing to a tide direction, a back surface opposite to the front surface and two side surfaces, and the distance between the adjacent turbulence strips distributed on the front surface and the back surface is smaller than the distance between the adjacent turbulence strips distributed on the two side surfaces;

the size of the turbulence strips in the first direction is the height of the turbulence strips, and at least two of the turbulence strips are different in height;

the shapes of the cross section peripheral profiles of the turbulence strips comprise various semi-circles, triangles or squares, and the turbulence strips with the cross section peripheral profiles of different shapes are alternately arranged in the length direction of the pile foundation and/or in the circumferential direction surrounding the pile foundation.

2. The offshore wind turbine foundation with turbulator bars of claim 1, wherein a distance between two adjacent turbulator bars decreases toward a direction close to a surface of the seabed.