CN113718861A - Offshore wind power anti-scouring composite device - Google Patents
Offshore wind power anti-scouring composite device Download PDFInfo
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- CN113718861A CN113718861A CN202111088993.9A CN202111088993A CN113718861A CN 113718861 A CN113718861 A CN 113718861A CN 202111088993 A CN202111088993 A CN 202111088993A CN 113718861 A CN113718861 A CN 113718861A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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Abstract
The application discloses offshore wind power scour prevention set composite, offshore wind power scour prevention set composite includes pile foundation and energy dissipation case, the pile foundation includes first portion and the second portion of interconnect in its axial, the second portion is buried in the seabed, the seabed has the seabed surface, first portion is located the top of seabed surface, the energy dissipation case is the annular and the cover is established on first portion, the energy dissipation case is injectd the energy dissipation chamber, the energy dissipation case includes inner tube and urceolus that radially upwards the interval set up on pile foundation, the inner tube is established to the urceolus cover, the inner tube cover is established first portion and is spaced apart with first portion, the energy dissipation chamber is located between inner tube and the urceolus, be equipped with first energy dissipation hole on the inner tube, be equipped with second energy dissipation hole on the urceolus. The offshore wind power anti-scouring composite device has the advantages of simple structure, good energy dissipation effect, low cost and the like.
Description
Technical Field
The invention relates to the field of offshore wind power, in particular to an anti-scouring composite device for offshore wind power.
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:
in the practical application process, because the effect of wave and morning and evening tides, the sea water is direct to marine wind power pile foundation basis erodees, the impact force direct action of sea water is on the surface of marine wind power pile foundation basis, it digs vortex structure to present decurrent book, vortex structure rolls up the deposit on the seabed, and further keep away from the place around the pile foundation with its area, it erodes the hole to have formed, the formation that erodes the hole makes the pile foundation degree of depth shallow, influence the stability of pile foundation basis, on the other hand, the sea water easily forms the corrosion pit in pile foundation surface, the corrosion pit is along with the continuous grow of sea water scour and then enlarge the influence to pile foundation surface, the destructive power strengthens gradually, can cause the collapse of marine wind turbine set when serious.
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides an offshore wind power anti-scouring composite device with good anti-scouring performance.
According to the embodiment of the invention, the offshore wind power anti-scouring composite device comprises: a pile foundation including a first portion and a second portion connected to each other in an axial direction thereof, the second portion being buried in a seabed having a seabed surface above which the first portion is located; the energy dissipation box is annular and is sleeved on the first portion, an energy dissipation cavity is limited by the energy dissipation box, the energy dissipation box comprises an inner barrel and an outer barrel which are arranged at intervals in the radial direction of the pile foundation, the inner barrel is sleeved on the outer barrel, the inner barrel is sleeved on the first portion and is spaced from the first portion, the energy dissipation cavity is located between the inner barrel and the outer barrel, a first energy dissipation hole is formed in the inner barrel, and a second energy dissipation hole is formed in the outer barrel.
According to the offshore wind power anti-scouring composite device provided by the embodiment of the invention, through the arrangement of the energy dissipation box, the first energy dissipation hole and the second energy dissipation hole, a rapid stream or a main stream in seawater is converted into a uniform slow stream, so that the impact of the seawater on a pile foundation is reduced, the formation of a horseshoe vortex is inhibited, and the marine wind power anti-scouring composite device has good anti-scouring performance.
In some embodiments, the first energy dissipating holes include a plurality of first energy dissipating holes spaced in an axial direction of the inner tube and/or in a circumferential direction of the inner tube, and the second energy dissipating holes include a plurality of second energy dissipating holes spaced in an axial direction of the outer tube and/or in a circumferential direction of the outer tube.
In some embodiments, the first and second energy dissipating holes are arranged offset in a radial direction of the first portion.
In some embodiments, the plurality of first energy dissipating holes are divided into a plurality of rows, each row of the first energy dissipating holes includes a plurality of first energy dissipating holes arranged at equal intervals in the axial direction of the inner tube, the plurality of rows of the first energy dissipating holes are arranged in the circumferential direction of the inner tube, the plurality of second energy dissipating holes are divided into a plurality of rows, each row of the second energy dissipating holes includes a plurality of second energy dissipating holes arranged at equal intervals in the axial direction of the outer tube, and the plurality of rows of the second energy dissipating holes are arranged in the circumferential direction of the outer tube.
In some embodiments, the density of the first energy dissipating holes increases towards the surface of the seabed and/or the density of the second energy dissipating holes increases towards the surface of the seabed.
In some embodiments, the outer circumferential surface of the outer barrel includes a front surface facing the direction of flow, a back surface opposite to the front surface, and two side surfaces, and the density of the second energy dissipating holes distributed on the front surface and the back surface is greater than the density of the second energy dissipating holes distributed on the two side surfaces.
In some embodiments, the outer circumferential surface of the outer cylinder is provided with a protrusion, or the outer circumferential surface of the outer cylinder is configured with a protrusion structure protruding outwards.
In some embodiments, the inner barrel has an outer diameter D1The interval between two adjacent first energy dissipation holes is more than or equal to 0.25D1Less than or equal to 1.0D1And/or the outer diameter of the outer cylinder is D2The interval between two adjacent second energy dissipation holes is more than or equal to 0.25D2Less than or equal to 1.0D2。
In some embodiments, the width of the energy dissipating cavities in the radial direction of the first portion is 0.01D1-2.5D1。
In some embodiments, the first energy dissipating hole is an elliptical hole or an oblong hole, and/or the second energy dissipating hole is an elliptical hole or an oblong hole.
Drawings
Fig. 1 is a schematic structural diagram of an offshore wind power anti-scour composite device according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a energy dissipation box of an offshore wind power anti-scour composite device according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of an offshore wind power anti-scour composite device according to an embodiment of the invention, which is mounted on a sea bed surface.
Reference numerals:
the offshore wind power anti-scouring compound device 100;
an energy dissipation box 2; an inner cylinder 21; a first energy dissipating hole 211; an outer cylinder 22; a second energy dissipating hole 221; and a projection 23.
Detailed Description
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.
An offshore wind power anti-scour compound according to an embodiment of the present invention is described below with reference to fig. 1-3.
As shown in fig. 1-3, the offshore wind power anti-scour composite device according to the embodiment of the invention comprises a pile foundation 1 and an energy dissipation box 2
The pile foundation 1 comprises a first part 11 and a second part 12 connected to each other in its axial direction (up and down as shown in fig. 1 and 3), the second part 12 being buried in the seabed, the seabed having a seabed surface, the first part 11 being located above the seabed surface. Specifically, as shown in fig. 3, the pile foundation 1 is divided into a first part 11 and a second part 12 in the up-down direction, the pile foundation 1 is buried downward in the seabed, the first part 11 is located above the surface of the seabed of the pile foundation 1, and the second part 12 is buried in the seabed below the surface of the seabed.
The energy dissipation box 2 is annular and is sleeved on the first part 11, the energy dissipation box 2 defines an energy dissipation cavity (not shown in the figure), the energy dissipation box 2 comprises an inner cylinder 21 and an outer cylinder 22 which are arranged at intervals in the radial direction of the pile foundation 1, the outer cylinder 22 is sleeved with the inner cylinder 21, the inner cylinder 21 is sleeved with the first part 11 and is spaced from the first part 11, the energy dissipation cavity is located between the inner cylinder 21 and the outer cylinder 22, a first energy dissipation hole 211 is formed in the inner cylinder 21, and a second energy dissipation hole 221 is formed in the outer cylinder 22. Specifically, as shown in fig. 1 to 3, the energy dissipation tank 2 is annularly sleeved on the first part 11, the energy dissipation tank 2 has an outer cylinder 22 and an inner cylinder 21 in the inner and outer directions, the inner cylinder 21 and the outer cylinder 22 are arranged at intervals to form an energy dissipation chamber, the inner circumferential surface of the inner cylinder 21 and the outer circumferential surface of the first part 11 are arranged at intervals, the inner cylinder 21 is provided with a first energy dissipation hole 211 penetrating through the circumferential wall of the inner cylinder 21, the outer cylinder 22 is provided with a second energy dissipation hole 221 penetrating through the circumferential wall of the outer cylinder 22, and both the first energy dissipation hole 211 and the second energy dissipation hole 221 are communicated with the energy dissipation chamber.
It will be appreciated that the shape of the dissipaters 2 is not a limitation of the invention and the dissipaters 2 may be rings of any shape, for example: the energy dissipation box 2 can be circular, elliptical or the outer cylinder is circular, the inner cylinder is rectangular or the outer cylinder is rectangular and the inner cylinder is circular, etc. in order to facilitate processing and manufacturing and save cost, the invention adopts the energy dissipation box 2 to be circular, in addition, the invention does not limit about the installation mode of the energy dissipation box 2 and the pile foundation 1, for example, the two ends of the connecting rod can be respectively fixed with the energy dissipation box 2 and the pile foundation 1, thereby fixing the energy dissipation box 2 on the pile foundation 1.
When the tidal current rushes towards the energy dissipation box 2, the second energy dissipation holes 221 penetrate through the peripheral wall of the outer cylinder 22, the tidal current can enter the energy dissipation box 2 through the second energy dissipation holes 221, direct impact force on the first part 11 of the pile foundation 1 is reduced, energy dissipation is carried out on the tidal current in the energy dissipation cavity, the tidal current after energy dissipation flows out of the first energy dissipation holes 211 of the inner cylinder 21, formation of horseshoe-shaped vortexes is restrained, and the rapid flow or the main flow in the seawater can dissipate energy and reduce the shock as soon as possible after entering the energy dissipation box 2 and is converted into uniform buffer flow.
According to the offshore wind power anti-scouring composite device 100 provided by the embodiment of the invention, through the arrangement of the energy dissipation box 2, the rapid flow or the main flow in the seawater is converted into the uniform slow flow, so that the impact of the seawater on the pile foundation 1 is reduced, the formation of horseshoe-shaped vortex is inhibited, and the marine wind power anti-scouring composite device has good anti-scouring performance.
In some embodiments, the first energy dissipating holes 211 include a plurality of first energy dissipating holes 211, and the plurality of first energy dissipating holes 211 are spaced in the axial direction (in the up-down direction, as shown in fig. 2) of the inner cylinder 21 and/or in the circumferential direction of the inner cylinder 21. Specifically, as shown in fig. 2, the first energy dissipating holes 211 are arranged in various ways, for example: the plurality of first energy dissipation holes 211 are arranged at intervals in the vertical direction, or the plurality of first energy dissipation holes 211 are arranged at intervals in the circumferential direction of the inner cylinder 21 to form a row of first energy dissipation holes 211, and the first energy dissipation holes 211 are arranged in a plurality of rows at intervals in the vertical direction.
In some embodiments, the second energy dissipating holes 221 include a plurality of second energy dissipating holes 221 spaced in the axial direction of the outer cylinder 22 and/or in the circumferential direction of the outer cylinder 22. Specifically, as shown in fig. 2, the second energy dissipating holes 221 are arranged in various ways, for example: the plurality of second energy dissipating holes 221 are arranged at intervals in the up-down direction, or the plurality of second energy dissipating holes 221 are arranged at intervals in the circumferential direction of the inner cylinder 21 to form a row of second energy dissipating holes 221, and the plurality of second energy dissipating holes 221 are arranged at intervals in the up-down direction.
In some embodiments, the first and second energy dissipating holes 211 and 221 are offset in a radial direction (in and out direction as shown in fig. 1-3) of the first portion 11. Specifically, as shown in fig. 2, the first energy dissipation hole 211 and the second energy dissipation hole 221 are arranged at an interval in the inward and outward direction, and the first energy dissipation hole 211 and the second energy dissipation hole 221 are staggered from each other, so that the tide is prevented from flowing into the energy dissipation cavity from the second energy dissipation hole 221 and then directly flowing out of the first energy dissipation hole 211, the time of the tide in the energy dissipation tank 2 is prolonged, the energy dissipation effect of the tide is increased, and the energy dissipation effect is further improved.
In some embodiments, the plurality of first energy dissipating holes 211 are divided into a plurality of rows, each row of the first energy dissipating holes 211 includes a plurality of first energy dissipating holes 211 arranged at equal intervals in the axial direction of the inner cylinder 21, the plurality of rows of the first energy dissipating holes 211 are arranged in the circumferential direction of the inner cylinder 21, the plurality of second energy dissipating holes 221 are divided into a plurality of rows, each row of the second energy dissipating holes 221 includes a plurality of second energy dissipating holes 221 arranged at equal intervals in the axial direction of the outer cylinder 22, and the plurality of rows of the second energy dissipating holes 221 are arranged in the circumferential direction of the outer cylinder 22. Specifically, as shown in fig. 2, each row of the first energy dissipating holes 211 includes a plurality of first energy dissipating holes 211 arranged at equal intervals in the up-down direction, a plurality of rows of the first efficiency holes are arranged at equal intervals in the circumferential direction of the inner tube 21, each row of the second energy dissipating holes 221 includes a plurality of second energy dissipating holes 221 arranged at equal intervals in the up-down direction, and a plurality of rows of the second efficiency holes are arranged at equal intervals in the circumferential direction of the inner tube 21, so that the arrangement of the energy dissipating box 2 is more reasonable, and the manufacturing cost of the energy dissipating box 2 is reduced.
During the actual use of the pile foundation 1, the closer the first section 11 is to the surface of the sea bed, the greater the impact of the tide, and the greater the possibility of horseshoe vortices being generated. Therefore, in some embodiments, the density of the first energy dissipating holes 211 becomes greater toward the surface of the seabed, and specifically, the first energy dissipating holes 211 are arranged to be gradually dense in the direction toward the surface of the seabed, that is: the interval between two adjacent first energy dissipation holes 211 in the vertical direction is gradually reduced, or the distance between two adjacent first energy dissipation holes 211 in the circumferential direction of the inner cylinder 21 is gradually reduced, so that the generation of horseshoe-shaped vortexes can be effectively reduced, and the anti-scouring capability and the practicability of the pile foundation 1 are enhanced.
The density of the second energy dissipating holes 221 increases toward the surface of the sea bed. Specifically, in the direction close to the surface of the sea bed, the second energy dissipating holes 221 are arranged gradually densely, that is: the interval between two adjacent second energy dissipation holes 221 in the vertical direction is gradually reduced, or the distance between two adjacent second energy dissipation holes 221 in the circumferential direction of the inner tube 21 is gradually reduced, so that the generation of horseshoe-shaped vortexes can be effectively reduced, and the anti-scouring capability and the practicability of the pile foundation 1 are enhanced.
In the related art, the pile foundation 1 is arranged in a shallow water area where the tidal current mainly approaches the coastline or moves away from the coastline in a direction approximately perpendicular to the coastline at the time of tide rise and tide fall, so that the side of the pile foundation 1 facing the coastline and the side facing away from the coastline are where the tidal current mainly impacts. In the two places of the pile foundation 1, the impact force of the borne tide is larger, and the number of the scouring pits caused by the vortex is larger. The extending direction of the other two side surfaces of the pile foundation 1 is consistent with the tide direction, and the tide mainly has friction and smaller impact force on the other two side surfaces of the pile foundation 1. Therefore, in some embodiments, the outer circumferential surface of the outer cylinder 22 includes a front surface facing the direction of the flow of the water, a back surface opposite to the front surface, and two side surfaces, and the density of the second energy dissipating holes 221 distributed on the front surface and the back surface is greater than the density of the second energy dissipating holes 221 distributed on the two side surfaces. Specifically, the outer peripheral surface of the outer cylinder 22 is defined as a front surface facing the direction of the tidal current, a side surface facing away from the direction of the tidal current, and a side surface connecting the front surface and the back surface (for example, the tidal current flows east and west, and the flow of the tidal current flows south and north is rare, the east surface of the outer cylinder 22 is the front surface, the west surface of the outer cylinder 22 is the back surface, or the west surface of the outer cylinder 22 is the front surface, the east surface of the outer cylinder 22 is the back surface, and the north and south surfaces of the outer cylinder 22 are the side surfaces), so that the density of the second energy dissipation holes 221 on the front surface, the back surface, and the two side surfaces of the outer cylinder 22 is set according to practical situations in consideration of economic efficiency, thereby reducing the cost of the energy dissipation box 2 and making the setting of the energy dissipation box 2 more reasonable.
In some embodiments, the outer circumferential surface of the outer cylinder 22 is provided with protrusions 23, or the outer circumferential surface of the outer cylinder 22 is configured with an outwardly protruding protrusion structure. Specifically, as shown in fig. 1-2, the outer circumferential surface of the outer cylinder 22 is provided with a protrusion 23 or a protrusion structure protruding outward in the inward-outward direction, whereby the tidal current is "broken up" by the protrusion 23 or the protrusion structure, the flow velocity and direction of the tidal current are locally changed, and the energy of the tidal current is dissipated to some extent, so that a large horseshoe-shaped vortex is not generated ahead of the first portion 11, thereby fundamentally suppressing the formation of the horseshoe-shaped vortex.
In some embodiments, the inner barrel 21 has an outer diameter D1The interval between two adjacent first energy dissipating holes 211 is greater than or equal to 0.25D1Less than or equal to 1.0D1. Specifically, in the circumferential direction of the inner cylinder 21, the interval between two adjacent first energy dissipating holes 211 is 0.25D1-1.0D1For example: the interval between two adjacent first energy dissipating holes 211 may be 0.25D1、0.5D1、0.75D1、1.0D1。
The outer diameter of the outer cylinder 22 is D2The interval between two adjacent second energy dissipating holes 221 is greater than or equal to 0.25D2Less than or equal to 1.0D2. Specifically, in the circumferential direction of the outer cylinder 22, the interval between two adjacent second energy dissipating holes 221 is 0.25D2-1.0D2For example: the interval between two adjacent first energy dissipating holes 211 may be 0.25D2、0.5D2、0.75D2、1.0D2。
In some embodiments the width of the dissipater cavity in the radial direction of the first part 11 is 0.01D1-2.5D1. Specifically, the distance between the inner peripheral surface of the outer cylinder 22 and the outer peripheral surface of the inner cylinder 21 in the inward and outward directions is 0.01D1-2.5D1For example, the distance between the inner peripheral surface of the outer cylinder 22 and the outer peripheral surface of the inner cylinder 21 in the inward and outward directions may be: 0.1D1、0.2D1、0.5D1。
The shapes of the first energy dissipation hole 211 and the second energy dissipation hole 221 on the energy dissipation box 2 affect the energy dissipation and impact reduction effects of the pile foundation 1, and in some embodiments, the first energy dissipation hole 211 is an elliptical hole or an oblong hole. Specifically, first energy dissipation hole 211 can be for upper and lower semicircle, and the centre is square manhole shape, or first energy dissipation hole 211 also can be oval, from this, can further strengthen the energy dissipation of pile foundation 1 when not influencing pile foundation 1 and subtract the scour protection ability of dashing effect and pile foundation 1, has simple structure, environmental protection and energy saving, long service life's characteristics.
The second energy dissipation holes 221 are elliptical holes or oblong holes. Specifically, the second energy dissipation hole 221 may be semicircular up and down, and the middle of the second energy dissipation hole 221 may be in a square manhole shape, or the second energy dissipation hole 221 may also be in an oval shape, so that the energy dissipation and impact reduction effect of the pile foundation 1 and the anti-scouring capability of the pile foundation 1 may be further enhanced while the structural performance of the pile foundation 1 is not affected, and the energy dissipation, impact reduction and anti-scouring device has the characteristics of simple structure, environmental protection, energy conservation and long service life.
In the description of the present invention, 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 devices or elements 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 specifically limited 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 connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 (10)
1. The utility model provides an offshore wind power scour prevention set composite which characterized in that includes:
a pile foundation including a first portion and a second portion connected to each other in an axial direction thereof, the second portion being buried in a seabed having a seabed surface above which the first portion is located;
the energy dissipation box is annular and is sleeved on the first portion, an energy dissipation cavity is limited by the energy dissipation box, the energy dissipation box comprises an inner barrel and an outer barrel which are arranged at intervals in the radial direction of the pile foundation, the inner barrel is sleeved on the outer barrel, the inner barrel is sleeved on the first portion and is spaced from the first portion, the energy dissipation cavity is located between the inner barrel and the outer barrel, a first energy dissipation hole is formed in the inner barrel, and a second energy dissipation hole is formed in the outer barrel.
2. An offshore wind power anti-scouring composite device according to claim 1, wherein the first energy dissipating holes comprise a plurality of first energy dissipating holes which are arranged at intervals in the axial direction of the inner barrel and/or in the circumferential direction of the inner barrel, the second energy dissipating holes comprise a plurality of second energy dissipating holes which are arranged at intervals in the axial direction of the outer barrel and/or in the circumferential direction of the outer barrel.
3. An offshore wind power erosion protection composite device according to claim 2, wherein the first and second dissipater holes are staggered in a radial direction of the first section.
4. An offshore wind power anti-scour composite device according to claim 2 or 3, wherein the plurality of first energy dissipating holes are divided into a plurality of rows, each row of first energy dissipating holes comprises a plurality of first energy dissipating holes arranged at equal intervals along the axial direction of the inner barrel, the plurality of rows of first energy dissipating holes are arranged along the circumferential direction of the inner barrel,
the plurality of second energy dissipation holes are divided into a plurality of columns, each column of second energy dissipation holes comprises a plurality of second energy dissipation holes which are distributed at equal intervals along the axial direction of the outer barrel, and the plurality of columns of second energy dissipation holes are arranged along the circumferential direction of the outer barrel.
5. An offshore wind power erosion prevention composite device according to claim 2, wherein the density of the first energy dissipation holes increases towards the sea bed surface and/or the density of the second energy dissipation holes increases towards the sea bed surface.
6. An offshore wind power erosion prevention composite device according to claim 2, wherein the outer circumference of the outer cylinder comprises a front surface facing the direction of the current, a back surface opposite to the front surface and two side surfaces, and the density of the second energy dissipation holes distributed on the front surface and the back surface is greater than the density of the second energy dissipation holes distributed on the two side surfaces.
7. An offshore wind power erosion prevention composite set according to claim 1, characterized in that the outer circumference of the outer cylinder is provided with protrusions,
or, the outer peripheral surface of the outer cylinder is provided with a convex structure protruding outwards.
8. Offshore wind power erosion prevention compound device according to claim 2, characterized in that the outer diameter of the inner cylinder is D1The interval between two adjacent first energy dissipation holes is more than or equal to 0.25D1Less than or equal to 1.0D1，
And/or the outer diameter of the outer cylinder is D2The interval between two adjacent second energy dissipation holes is more than or equal to 0.25D2Less than or equal to 1.0D2。
9. Offshore wind power erosion prevention compound device according to claim 1, characterized in that the outer diameter of the inner cylinder is D1The width of the energy dissipation cavity in the radial direction of the first part is 0.01D1-2.5D1。
10. An offshore wind power erosion prevention composite device according to claim 1, wherein the first dissipation hole is an elliptical hole or an oblong hole and/or the second dissipation hole is an elliptical hole or an oblong hole.
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| CN202111088993.9A CN113718861A (en) | 2021-09-16 | 2021-09-16 | Offshore wind power anti-scouring composite device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203924088U (en) * | 2014-05-13 | 2014-11-05 | 浙江海洋学院 | A kind of fishing bank type coastal waters wind-powered electricity generation protection against erosion pile foundation |
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| CN207775824U (en) * | 2017-12-27 | 2018-08-28 | 浙江大学 | A kind of Anti-scouring device of offshore wind turbine single-pile foundation |
| CN209353333U (en) * | 2019-01-04 | 2019-09-06 | 李清涛 | A kind of Strengthening of Bridge Pile Foundation structure |
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| CN111576470A (en) * | 2020-05-25 | 2020-08-25 | 大连理工大学 | Marine engineering fan foundation single-pile scouring protection structure and scouring depth reduction calculation method thereof |
| CN112177031A (en) * | 2020-09-25 | 2021-01-05 | 上海交通大学 | Offshore wind turbine single pile foundation with radiation rib plates and anti-scouring cover |
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Application publication date: 20211130 |