CN113774963A - Offshore wind power anti-scouring device with energy dissipation net - Google Patents
Offshore wind power anti-scouring device with energy dissipation net Download PDFInfo
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- CN113774963A CN113774963A CN202111087598.9A CN202111087598A CN113774963A CN 113774963 A CN113774963 A CN 113774963A CN 202111087598 A CN202111087598 A CN 202111087598A CN 113774963 A CN113774963 A CN 113774963A
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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
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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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
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
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Abstract
本发明公开一种具有消能网的海上风电防冲刷装置，所述具有消能网的海上风电防冲刷装置包括桩基础和套筒，桩基础包括在其轴向上相互连接的第一部分和第二部分，第二部分埋入海床中，海床具有海床面，第一部分位于海床面的上方，套筒套设在第一部分上且其底部支撑在海床面上，套筒的外周面设有向外突出的消能网，消能网为包覆套筒的至少一部分外周面的网状结构，套筒的外径为De，消能网包覆的套筒的外周面的面积大于等于1.0πDe2。本发明的具有消能网的海上风电防冲刷装置具有结构简单、实用性高、使用寿命长等优点。
The invention discloses an anti-scour device for offshore wind power with an energy dissipation net. The anti-scour device for offshore wind power with an energy dissipation net includes a pile foundation and a sleeve. The pile foundation includes a first part and a second part connected to each other in the axial direction. Two parts, the second part is buried in the seabed, the seabed has a seabed surface, the first part is located above the seabed surface, the sleeve is sleeved on the first part and its bottom is supported on the seabed surface, the outer peripheral surface of the sleeve There is an energy dissipating net protruding outward, the energy dissipating net is a mesh structure covering at least a part of the outer peripheral surface of the sleeve, the outer diameter of the sleeve is De, and the area of the outer peripheral surface of the sleeve covered by the energy dissipating net is greater than is equal to 1.0πDe 2 . The offshore wind power anti-scour device with energy dissipation net of the present invention has the advantages of simple structure, high practicability, long service life and the like.
Description
Technical Field
The invention relates to the field of offshore wind power, in particular to an offshore wind power anti-scouring device with an energy dissipation network.
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.
In the related technology, 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 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 the offshore wind power anti-scouring device with the energy dissipation network, which is simple in structure, low in cost and good in anti-scouring performance.
The offshore wind power anti-scouring device with the energy dissipation net comprises a pile foundation, wherein the pile foundation comprises a first part and a second part which are connected with each other in the axial direction of the pile foundation, the second part is buried in a seabed, the seabed is provided with a seabed surface, and the first part is positioned above the seabed surface; the energy dissipation device comprises a sleeve, the sleeve is sleeved on the first portion, the bottom of the sleeve is supported on the seabed surface, an energy dissipation net protruding outwards is arranged on the outer peripheral surface of the sleeve, the energy dissipation net is of a net structure covering at least one part of the outer peripheral surface of the sleeve, the outer diameter of the sleeve is De, and the area of the outer peripheral surface of the sleeve covered by the energy dissipation net is larger than or equal to 1.0 pi De2。
According to the offshore wind power anti-scouring device with the energy dissipation net, the sleeve is provided with the energy dissipation net, so that a rapid flow or a main flow in seawater is converted into a uniform slow flow, the impact of the seawater on the surface of a pile foundation is reduced, the formation of a horseshoe vortex is inhibited, and the offshore wind power anti-scouring device with the energy dissipation net has good anti-scouring performance.
In some embodiments, the energy dissipating mesh is annular and disposed around the sleeve.
In some embodiments, the energy dissipating net is formed by intersecting a first spiral energy dissipating strip and a second spiral energy dissipating strip spirally wound around the sleeve, or by intersecting a plurality of first energy dissipating strips parallel to each other, which are rings arranged around the sleeve, and a plurality of second energy dissipating strips parallel to each other.
In some embodiments, the energy dissipating mesh is formed by intersecting a plurality of the first helical energy dissipating strips parallel to each other and a plurality of the second helical energy dissipating strips parallel to each other.
In some embodiments, the portion of the energy dissipating net proximate to the deck of the sea bed is denser than the portion distal from the deck of the sea bed.
In some embodiments, the outer circumferential surface of the sleeve comprises a front surface facing in the direction of the flow of the water, a back surface opposite the front surface, and two side surfaces, the energy dissipation networks being distributed more densely over the front surface and the back surface than over the two side surfaces.
In some embodiments, the dimension of the energy dissipating mesh in the axial direction of the sleeve is 1.0De or more.
In some embodiments, the bottom of the sleeve is provided with an anti-sinking plate extending along the sea bed surface, the bottom surface of the anti-sinking plate is abutted against the sea bed surface, the bottom of the sleeve is provided with a soil cutting plate extending towards the sea bed along the axial direction of the pile foundation, and the bottom end of the soil cutting plate is of a blade-shaped structure.
In some embodiments, the outer circumferential surface of the sleeve is a curved surface that is concave in a direction toward the first portion, and the outer diameter of the sleeve increases in a direction toward the sea bed surface.
In some embodiments, the distance from the top end of the sleeve to the surface of the sea bed in the axial direction of the pile foundation is greater than or equal to 0.3 De.
Drawings
Fig. 1 is a schematic view of an offshore wind power anti-scour arrangement with an energy grid according to a first embodiment of the present invention.
Fig. 2 is a front view of an offshore wind power anti-scour arrangement with an energy dissipation grid according to a first embodiment of the present invention.
Fig. 3 is a schematic view of an offshore wind power anti-scour arrangement with an energy grid according to a second embodiment of the present invention.
Fig. 4 is a front view of an offshore wind power anti-scour arrangement with an energy dissipation grid according to a second embodiment of the present invention.
Fig. 5 is a schematic view of an offshore wind power anti-scour arrangement with an energy dissipation grid according to a third embodiment of the present invention.
Fig. 6 is a front view of an offshore wind power anti-scour arrangement with an energy dissipation grid according to a third embodiment of the present invention.
Reference numerals:
an offshore wind power erosion protection device 100 with an energy dissipation network;
pile foundations 1; a first portion 11; a second portion 12; a sleeve 2; an anti-settling plate 21; a soil cutting plate 22; an energy dissipation net 3; a first spiral energy dissipating strip 31; a second spiral energy dissipating strip 32; a first energy dissipating strip 33; second dissipator strip 34.
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 arrangement with an energy grid according to an embodiment of the present invention is described below with reference to fig. 1-6, comprising a pile foundation 1 and a sleeve 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), 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. As will be appreciated by those skilled in the art, the conventional pile foundations 1 are all hollow cylindrical structures.
The sleeve 2 is sleeved on the first part 11, the bottom of the sleeve is supported on the surface of the sea bed, the outer peripheral surface of the sleeve 2 is provided with an energy dissipation net 3 protruding outwards, the energy dissipation net 3 is a net-shaped structure covering at least one part of the outer peripheral surface of the sleeve 2, the outer diameter of the sleeve 2 is De, and the area of the outer peripheral surface of the sleeve 2 covered by the energy dissipation net 3 is larger than or equal to 1.0 pi D2. Specifically, as shown in fig. 1-2, the sleeve 2 is sleeved on the outer peripheral surface of the first part 11, the lower end surface of the sleeve is arranged above the sea bed surface, the outer peripheral surface of the sleeve 2 is provided with an energy dissipation net 3 extending outwards along the radial direction of the sleeve, the outer diameter of the sleeve 2 is any value from 5m to 8m, and the area of the outer peripheral surface of the sleeve 2 covered by the energy dissipation net 3 is greater than or equal to 1.0 pi De2，The circumferential length of the outer circumferential surface of the sleeve 2 covered by the energy dissipating mesh 3 is not less than 2De +2 pi De, for example: when De is 6m, the area of the outer peripheral surface of the sleeve 2 covered with the energy dissipating mesh 3 is 36 pi, and the circumferential length of the outer peripheral surface of the sleeve 2 covered with the energy dissipating mesh 3 is 12+12 pi.
According to the offshore wind power anti-scour device 100 with the energy dissipation net provided by the embodiment of the invention, the energy dissipation net 3 protruding outwards is arranged on the outer peripheral surface of the sleeve 2, and the energy dissipation net 3 is of a net-shaped structure covering at least a part of the outer peripheral surface of the sleeve 2. Therefore, when the tide contacts the energy dissipation net 3, the protruded energy dissipation net 3 can 'break up' the tide, the flow speed and the direction of the tide are locally changed, the energy of the tide can be dissipated to a certain degree, the stopping resistance of the pile foundation 1 to the tide is reduced, and a large horseshoe-shaped vortex cannot be generated in front of the pile foundation 1, so that the formation of the horseshoe-shaped vortex is restrained from the source, and the service life of the pile foundation 1 is prolonged. That is, the arrangement of the protruding energy dissipation net 3 achieves the effects of energy dissipation and impact reduction, inhibits the formation of horseshoe vortices near the pile foundation 1, effectively protects the soil around the pile foundation 1, and avoids the formation of scoured pits.
In some embodiments, the dissipater mesh 3 is annular and is disposed around the sleeve 2. Therefore, the energy dissipation net 3 is annularly surrounded on the outer peripheral surface of the sleeve 2, so that the energy dissipation net 3 can play a role in reducing impact on tide in any direction, and the energy dissipation net 3 is more reasonable in arrangement.
In some embodiments the energy dissipater 3 is formed by intersecting first 31 and second 32 helical dissipater strips helically wound around the sleeve 2, or the energy dissipater 3 is formed by intersecting a plurality of first 33 and second 34 parallel to each other, the first dissipater strips 33 being annular in shape arranged around the sleeve 2.
In particular, there are various arrangements of the energy dissipating mesh 3, for example: as shown in fig. 1-2, the first spiral energy-dissipating strips 31 and the second spiral energy-dissipating strips 32 are provided on the outer circumferential surface of the sleeve 2, and the first spiral energy-dissipating strips 31 and the second spiral energy-dissipating strips 32 are arranged to intersect on the outer circumferential surface of the sleeve 2, or as shown in fig. 3-6, the first energy-dissipating strips 33 are provided around the outer circumferential surface of the sleeve 2, and a plurality of the first energy-dissipating strips 33 are provided at intervals in the up-down direction on the sleeve 2, a plurality of the second spiral energy-dissipating strips 32 are provided at intervals around the circumferential direction of the sleeve 2, and the second spiral energy-dissipating strips 32 extend in the up-down direction and intersect with each of the first energy-dissipating strips 33, and the plurality of the first energy-dissipating strips 33 and the plurality of the second spiral energy-dissipating strips 32 cooperate with each other to form the energy-dissipating net 3.
In some embodiments, the energy dissipating mesh 3 is formed by intersecting a plurality of first spiral energy dissipating strips 31 parallel to each other and a plurality of second spiral energy dissipating strips 32 parallel to each other. Specifically, as shown in fig. 1, a plurality of first spiral energy dissipating strips 31 and a plurality of second spiral energy dissipating strips 32 are provided on the outer circumferential surface of the sleeve 2. The plurality of first spiral energy dissipating strips 31 are parallel to each other and arranged at intervals around the circumference of the sleeve 2, the plurality of second spiral energy dissipating strips 32 are parallel to each other and arranged at intervals around the circumference of the sleeve 2, and the plurality of first spiral energy dissipating strips 31 and the plurality of second spiral energy dissipating strips 32 intersect with each other.
In some embodiments, as shown in fig. 2, the upper ends of the plurality of first spiral energy-dissipating strips 31 and the upper ends of the plurality of second spiral energy-dissipating strips 32 are level with each other in the up-down direction, and the lower ends of the plurality of first spiral energy-dissipating strips 31 and the lower ends of the plurality of second spiral energy-dissipating strips 32 are level with each other in the up-down direction, that is, the upper ends of the plurality of first spiral energy-dissipating strips 31 and the upper ends of the plurality of second spiral energy-dissipating strips 32 are all at the same distance from the sea level in the up-down direction, and the lower ends of the plurality of first spiral energy-dissipating strips 31 and the lower ends of the plurality of second spiral energy-dissipating strips 32 are also at the same distance from the sea level in the up-down direction. The upper end of each first spiral energy dissipation strip 31 intersects with the upper end of one of the second spiral energy dissipation strips 32, and the lower end of each first spiral energy dissipation strip 31 also intersects with the lower end of one of the second spiral energy dissipation strips 32. The energy dissipation net 3 formed by the first spiral energy dissipation strips 31 and the second spiral energy dissipation strips 32 in a crossed mode is arranged on the sleeve 2 in a surrounding mode, and energy dissipation and impact reduction efficiency of the energy dissipation net 3 is guaranteed.
It will be appreciated that in some embodiments the first spiral energy dissipater strip 31 may be one strip and the second spiral energy dissipater strip 32 may also be one strip. The first and second spiral energy dissipating strips 31 and 32 each spirally surround the sleeve 2, and the first and second spiral energy dissipating strips 31 and 32 have a plurality of intersection points, thereby forming the energy dissipating net 3 around the sleeve 2.
Since the position of the first section 11 closer to the surface of the sea bed is more likely to receive tidal current impact, the probability of horseshoe vortices being generated is also higher. Thus, to better cope with the actual situation, in some embodiments the parts of the energy dissipating mesh 3 close to the surface of the sea bed are denser than the parts far from the surface of the sea bed. Thus, to better cope with the actual situation, in some embodiments the density of the dissipater mesh 3 increases towards the surface of the sea bed. Specifically, as shown in fig. 5 to 6, the density of the energy dissipation net 3 is increased by increasing the number of the first energy dissipation strips 33 and the number of the second energy dissipation strips 34 or decreasing the distance between the adjacent first spiral strips 33 and the distance between the second energy dissipation strips 34, and the density of the energy dissipation net 3 is increased towards the direction close to the sea bed surface, so that the anti-scouring capability and the practicability of the offshore wind power foundation are improved.
In many sea areas, the direction of the current is not uniform, for example: tidal currents in some sea areas flow east and west throughout the year, with north and south flow rarely occurring. When the pile foundation 1 is subjected to the tide of the flow of things, the sea beds on the east and west sides of the pile foundation 1 are most likely to generate large scour pits, while the sea beds on the south and north sides generate smaller scour pits.
In order to reduce the manufacturing cost and the manufacturing difficulty of the offshore wind power foundation under the condition of having a sufficiently strong anti-scouring capacity, in some embodiments, the outer circumferential surface of the sleeve 2 comprises a front surface facing the tide direction, a back surface opposite to the front surface and two side surfaces, and the energy dissipation nets 3 distributed on the front surface and the back surface are denser than the energy dissipation nets 3 distributed on the two side surfaces.
Specifically, the front surface is defined as the surface facing the direction of the tide, the side surface facing away from the direction of the tide, and the side surface connected with the front surface and the back surface is defined as the side surface (for example, the tide flows in the east-west direction, and the tide flows in the north-south direction are rare, the east surface of the sleeve 2 is the front surface, the west surface of the sleeve 2 is the back surface, or the west surface of the sleeve 2 is the front surface, the east surface of the sleeve 2 is the back surface, and the north-south surfaces of the sleeve 2 are the side surfaces), and the density of the energy dissipation nets 3 arranged on the front surface and the back surface of the sleeve 2 is greater than that of the energy dissipation nets 3 on both sides of the sleeve 2. Therefore, the offshore wind power foundation can have strong anti-scouring capacity, the manufacturing cost can be reduced, and the manufacturing difficulty is reduced.
In some embodiments, the dimension of the energy dissipating mesh 3 in the axial direction of the sleeve 2 is 1.0De or more. Specifically, the dimension of the energy dissipation net 3 on the sleeve 2 in the vertical direction is greater than or equal to 1.0De, De can be any value from 5m to 8m, for example, De is 6m, the dimension of the energy dissipation net 3 on the sleeve 2 in the vertical direction is equal to 6m, and the distance between the upper end of the energy dissipation net 3 and the sea level is equal to 6 m.
In some embodiments, the bottom of the sleeve 2 is provided with an anti-sinking plate 21 extending along the sea bed surface, the bottom surface of the anti-sinking plate 21 is abutted against the sea bed surface, the bottom of the sleeve 2 is provided with a soil cutting plate 22 extending into the sea bed along the axial direction of the pile foundation 1, and the bottom end of the soil cutting plate 22 is of a knife-edge structure. Specifically, as shown in fig. 1 to 6, the lower end portion of the sleeve 2 is provided with a sinking prevention plate 21 extending outward in the radial direction of the sleeve 2, and the diameter of the outer circumferential surface of the sinking prevention plate 21 is 1.2De-3De, and the area of the bottom surface of the sinking prevention plate 21 is 0.1 pi De2-2.5πDe2The lower end part of the sleeve 2 is provided with a soil cutting plate 22 extending along the vertical direction, the lower end surface of the soil cutting plate 22 is of a blade-shaped structure, the length of the soil cutting plate 22 in the vertical direction is 0.02De-0.5De, so that the soil cutting plate 22 is inserted into the soil of the sea bed surface, and the lower end surface of the anti-sinking plate 21 is propped against the upper part of the sea levelFrom this, carry out axial positioning to sleeve 2, prevent that sleeve 2 from drunkenness from top to bottom, and prevent that heavy board 21 has made things convenient for sleeve 2's installation, prevent that sleeve 2 from inserting below the sea level, and then guaranteed that the energy dissipation net 3 all is located above the sea level.
In some embodiments, stones are thrown on the outer periphery of the sleeve 2, a part of the stones are located on the anti-sinking plate 21 to prevent the sleeve 2 from inclining due to the impact of seawater, and another part of the stones are located on the outer periphery of the anti-sinking plate 21, so that the sand and sand around the pile foundation 1 are washed and form a washing pit due to the action of waves and tide, and the stones can turn over into the washing pit in time, so that the stability of the pile foundation 1 is improved, and the anti-washing effect is enhanced. When the stone throwing operation is carried out, the sleeve 2 and the anti-sinking plate 21 can also prevent the thrown stone from smashing the pile foundation 1, and the pile foundation has the characteristics of safety and reliability.
In some embodiments, the outer circumference of the sleeve 2 is curved in a concave shape in a direction approaching the first portion 11, and the outer diameter of the sleeve 2 increases in a direction approaching the surface of the sea bed. Specifically, the cross-sectional area of the sleeve 2 is gradually reduced from bottom to top, and the outer peripheral surface of the sleeve 2 is streamlined and recessed inward in the inward and outward directions. Therefore, the formation of large vortexes can be reduced, and the anti-scouring capability and the practicability of the offshore wind power foundation are further improved.
In some embodiments, the distance from the top end of the sleeve 2 to the sea bed surface in the axial direction of the pile foundation 1 is greater than or equal to 0.3De, specifically, the distance from the upper end of the sleeve 2 to the sea level is greater than or equal to 0.3De, D may be any value from 1m to 15m, for example, De is 6m, and the distance from the upper end of the sleeve 2 to the sea level is greater than or equal to 1.8 m.
In some embodiments, the energy dissipation net 3 protrudes from the outer circumferential surface of the sleeve 2 along the first direction, the dimension of the energy dissipation net 3 in the vertical direction is defined as the height of the energy dissipation net 3, in some embodiments, the energy dissipation net 3 may have different heights, and the arrangement increases the irregularity of the energy dissipation net 3, so that the offshore wind power foundation can cope with tides with various energy gradients and horseshoe-shaped vortexes, the adaptability of the offshore wind power foundation is enhanced, the energy dissipation and impact reduction effects of the energy dissipation net 3 are further enhanced, and the anti-scouring capability of the offshore wind power foundation is enhanced.
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. An offshore wind power anti-scour device with an energy dissipation net, comprising:
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 sleeve is sleeved on the first part, the bottom of the sleeve is supported on the seabed surface, an energy dissipation net protruding outwards is arranged on the outer peripheral surface of the sleeve, and the energy dissipation net covers at least one part of the outer periphery of the sleeveThe outer diameter of the sleeve is De, and the area of the outer peripheral surface of the sleeve coated by the energy dissipation net is more than or equal to 1.0 pi De2。
2. Offshore wind power scour protection with energy dissipation mesh according to claim 1, wherein the energy dissipation mesh is annular and arranged around the sleeve.
3. Offshore wind power scour protection with energy dissipation mesh according to claim 1, wherein the energy dissipation mesh is formed by intersecting first and second helical energy dissipation strips helically encircling the sleeve,
or the energy dissipation net is formed by intersecting a plurality of first energy dissipation strips which are parallel to each other and a plurality of second energy dissipation strips which are parallel to each other, and the first energy dissipation strips are annular and are arranged around the sleeve.
4. Offshore wind power scour protection with energy dissipation net according to claim 3, wherein the energy dissipation net is formed by intersecting a plurality of mutually parallel first spiral energy dissipation strips and a plurality of mutually parallel second spiral energy dissipation strips.
5. Offshore wind power scour protection with energy dissipation mesh according to claim 1, wherein the portion of the energy dissipation mesh close to the surface of the sea bed is denser than the portion away from the surface of the sea bed.
6. Offshore wind power scour protection with energy dissipation nets according to claim 1, wherein the outer circumferential surface of the sleeve comprises a front surface facing the direction of the tidal current, a back surface opposite the front surface and two side surfaces, the energy dissipation nets being distributed more densely over the front and back surfaces than over the two side surfaces.
7. Offshore wind power scour protection with energy dissipation mesh according to claim 1, wherein the dimension of the energy dissipation mesh in the axial direction of the sleeve is equal to or greater than 1.0 De.
8. Offshore wind power erosion protection device with energy dissipation mesh according to any one of claims 1-7, characterized in that the bottom of the sleeve has an anti-sink plate extending along the sea bed surface, the bottom surface of the anti-sink plate abutting against the sea bed surface,
the bottom of the sleeve is provided with a soil cutting plate extending towards the seabed along the axial direction of the pile foundation, and the bottom end of the soil cutting plate is of a knife-edge structure.
9. The offshore wind power erosion prevention device with the energy dissipation net according to any one of claims 1 to 7, wherein the outer peripheral surface of the sleeve is a curved surface that is concave in a direction approaching the first portion, and the outer diameter of the sleeve increases in a direction approaching the surface of the sea bed.
10. Offshore wind power scour protection with an energy dissipation mesh according to any one of the claims 1-7, wherein the distance of the top end of the sleeve to the sea bed surface in the axial direction of the pile foundation is equal to or greater than 0.3 De.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087598.9A CN113774963A (en) | 2021-09-16 | 2021-09-16 | Offshore wind power anti-scouring device with energy dissipation net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087598.9A CN113774963A (en) | 2021-09-16 | 2021-09-16 | Offshore wind power anti-scouring device with energy dissipation net |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541484A (en) * | 2022-02-23 | 2022-05-27 | 中国长江三峡集团有限公司 | Scour prevention stone barrier device of pile foundation under water |
| GB2621598A (en) * | 2022-08-16 | 2024-02-21 | Subsea 7 Ltd | Installation of suction piles underwater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9712576A (en) * | 1996-10-29 | 1999-12-21 | Nicc Ltd | Stake cover. |
| CN110886326A (en) * | 2019-11-11 | 2020-03-17 | 浙江大学 | Anti-scouring protection device for offshore wind power pile foundation and installation method |
| CN112523266A (en) * | 2020-12-18 | 2021-03-19 | 天津水运工程勘察设计院 | Fabricated offshore wind power foundation anti-scouring energy dissipation structure and installation method thereof |
| CN112922790A (en) * | 2021-03-29 | 2021-06-08 | 中国华能集团清洁能源技术研究院有限公司 | Floating type fan spoiler structure capable of increasing hydrodynamic damping |
| CN113216272A (en) * | 2021-06-25 | 2021-08-06 | 中国华能集团清洁能源技术研究院有限公司 | Device and method for preventing peripheral scouring of offshore wind power single-pile foundation pile |
-
2021
- 2021-09-16 CN CN202111087598.9A patent/CN113774963A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9712576A (en) * | 1996-10-29 | 1999-12-21 | Nicc Ltd | Stake cover. |
| CN110886326A (en) * | 2019-11-11 | 2020-03-17 | 浙江大学 | Anti-scouring protection device for offshore wind power pile foundation and installation method |
| CN112523266A (en) * | 2020-12-18 | 2021-03-19 | 天津水运工程勘察设计院 | Fabricated offshore wind power foundation anti-scouring energy dissipation structure and installation method thereof |
| CN112922790A (en) * | 2021-03-29 | 2021-06-08 | 中国华能集团清洁能源技术研究院有限公司 | Floating type fan spoiler structure capable of increasing hydrodynamic damping |
| CN113216272A (en) * | 2021-06-25 | 2021-08-06 | 中国华能集团清洁能源技术研究院有限公司 | Device and method for preventing peripheral scouring of offshore wind power single-pile foundation pile |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541484A (en) * | 2022-02-23 | 2022-05-27 | 中国长江三峡集团有限公司 | Scour prevention stone barrier device of pile foundation under water |
| GB2621598A (en) * | 2022-08-16 | 2024-02-21 | Subsea 7 Ltd | Installation of suction piles underwater |
| WO2024038277A1 (en) | 2022-08-16 | 2024-02-22 | Subsea 7 Limited | Installation of suction piles underwater |
| GB2621598B (en) * | 2022-08-16 | 2025-03-05 | Subsea 7 Ltd | Installation of suction piles underwater |
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Application publication date: 20211210 |