Vibration reduction and energy dissipation anchor chain for floating type offshore wind power structure and using method

Abstract

The invention relates to the technical field of vibration reduction control of an offshore wind power structure, and discloses a vibration reduction and energy dissipation anchor chain for a floating type offshore wind power structure and a using method.The vibration reduction and energy dissipation anchor chain comprises an anchor chain fixing ring installed on a drum body of a tower drum located on a floating platform; the vibration reduction assembly comprises a plurality of vibration reduction anchor heads and a plurality of flexible anchor chains, the tail ends of the vibration reduction anchor heads are connected with the anchor chain fixing ring through the flexible anchor chains, and the head ends of the vibration reduction anchor heads stretch into a seabed foundation and are used for anchoring and vibration reduction of the tower drum. The floating platform is connected with a suction barrel foundation in a seabed foundation through the flexible anchor chain; and the energy dissipation assembly comprises a plurality of anchor chain energy dissipation pieces, and the anchor chain energy dissipation pieces are installed on the flexible anchor chain and used for conducting vibration reduction and energy dissipation on the flexible anchor chain. The device has the advantages of being flexible in arrangement, adjustable and controllable, vibration reduction and energy dissipation are achieved for a wind power structure floating on the sea, and then the service life of the offshore wind power structure is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction control for offshore wind power structures, and particularly to a vibration reduction and energy dissipation anchor chain for a floating offshore wind power structure and a usage method thereof. Background Art

[0002] Currently, the consumption and demand for energy are increasing day by day, and the energy problem has gradually become a prominent problem restricting social development. The development and utilization of offshore wind energy are important strategic supports for accelerating energy transformation, solving environmental pollution problems, and achieving the goals of "carbon peak and carbon neutrality". Currently, the construction of offshore wind power is developing towards the directions of "large-scale", "deep-water", and "floating". The tower barrels are becoming taller and the wind turbine blades are becoming longer and thinner, and the vibration response problem of wind power structures is becoming more prominent. In recent years, incidents of shutdown due to excessive vibration have occurred repeatedly, seriously restricting the high-quality development of offshore wind power.

[0003] Currently, the mooring systems adopted by floating offshore wind power structures are mostly combinations of traditional anchor chains and suction bucket foundations. When suddenly encountering dynamic loads such as extreme wind and waves, the anchor chain will quickly tighten. Although it can provide bearing capacity for the floating platform and the tower barrel wind turbine structure, it seriously lacks the functions of buffering, vibration reduction, and energy dissipation. The situation of excessive instantaneous acceleration of the wind turbine structure often occurs when the anchor chain tightens instantaneously, and the impact damage of the anchor chain will accumulate rapidly due to the long-term repeated tightening of the anchor chain. Therefore, it is difficult to ensure the safety of the offshore wind turbine during the 20 - 30-year service period, and there is an urgent need to provide new technical means for the vibration control of floating offshore wind power structures.

[0004] Therefore, there is an urgent need for a vibration reduction and energy dissipation anchor chain for a floating offshore wind power structure and a usage method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a vibration reduction and energy dissipation anchor chain for a floating offshore wind power structure and a usage method thereof to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a vibration reduction and energy dissipation anchor chain for a floating offshore wind power structure, including:

[0007] An anchor chain fixing ring, which is installed on the barrel body of the tower barrel located on the floating platform;

[0008] A vibration reduction assembly, including a plurality of vibration reduction anchor heads and a plurality of flexible anchor chains. The tail end of the vibration reduction anchor head is connected to the anchor chain fixing ring through the flexible anchor chain. The head end of the vibration reduction anchor head extends into the seabed foundation for anchoring and vibration reduction of the tower barrel. The floating platform is connected to the suction bucket foundation in the seabed foundation through the flexible anchor chain;

[0009] The energy dissipation component includes a number of anchor chain energy dissipation members, which are installed on the flexible anchor chain and used to damp and dissipate energy of the flexible anchor chain.

[0010] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, the damping anchor head includes a tapered head, a number of damping connecting members, a number of hoop rings and a number of pressing plates. Adjacent two of the damping connecting members are connected by the hoop rings. The damping connecting member at the front end is connected to the damping anchor head. The damping connecting member is connected to the pressing plate, and the pressing plate is connected to the flexible anchor chain.

[0011] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, the damping connecting member includes a limiting inner tube. One end of a compression spring is fixedly connected to the outer side wall of the limiting inner tube along the circumferential direction. The other end of the compression spring is fixedly connected to an arc-shaped outer plate. Adjacent two of the arc-shaped outer plates are connected. An upper connecting ear and a lower connecting ear are respectively fixedly connected to the top end and the bottom end of the arc-shaped outer plate. The upper connecting ears and the lower connecting ears on adjacent two of the damping connecting members are connected by bolts. The hoop ring is located at the connection of the upper connecting ear and the lower connecting ear.

[0012] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, the anchor chain energy dissipation member includes a damping structure and a stiffness structure. The damping structure is arranged on the stiffness structure;

[0013] The stiffness structure includes two steel plates, which are respectively connected to two flexible anchor chains. Slide rails are opened at the top and bottom ends of the opposite side walls of the two steel plates. A steel truss is slidably connected between the opposite two slide rails. The two steel trusses are connected by a screw rod.

[0014] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, the damping structure includes two rubber pads, which are respectively fixedly connected to the two steel plates. A number of telescopic rods are fixedly connected between the two rubber pads. A telescopic spring is sleeved on the telescopic rod.

[0015] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, the flexible anchor chain includes a connecting anchor chain and a pressing plate zipper. The anchor chain fixing ring, the lower connecting ear and the steel plate are connected by the connecting anchor chain, and the pressing plate zipper is connected to the pressing plate.

[0016] According to a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure provided by the present invention, a connecting ring is arranged on the steel plate, and the connecting ring is connected to the connecting anchor chain.

[0017] A vibration damping and energy dissipation anchor chain for a floating offshore wind power structure provided by the present invention, square holes are formed in both the limiting inner tube and the arc-shaped outer plate.

[0018] A vibration damping and energy dissipation anchor chain for a floating offshore wind power structure provided by the present invention, arc-shaped holes are formed in both the arc-shaped outer plate and the hoop for passing through the pressing plate.

[0019] A method for using a vibration damping and energy dissipation anchor chain for a floating offshore wind power structure, comprising the following steps:

[0020] Connect the floating platform to the suction bucket foundation in the seabed foundation through the flexible anchor chain;

[0021] Throw a plurality of the vibration damping anchor heads onto the surface of the seabed foundation along the circumferential direction of the tower barrel, and embed the vibration damping anchor heads into the seabed foundation by stretching the connected flexible anchor chain;

[0022] Install a plurality of the anchor chain energy dissipation members on the flexible anchor chain;

[0023] Install the other end of the flexible anchor chain on the anchor chain fixing ring, and install the anchor chain fixing ring on the tower barrel.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects:

[0025] A vibration damping and energy dissipation anchor chain and a using method for a floating offshore wind power structure provided by the present invention, the vibration damping anchor head can deform to a certain extent both axially and longitudinally. Therefore, when suddenly encountering extreme environmental loads, when the anchor chain energy dissipation member reaches the deformation limit, the mutual friction area with the foundation soil can be increased by gradually stretching the vibration damping anchor head, further enhancing the vibration damping effect. On the premise of ensuring strength, the anchor chain energy dissipation member can deform elastically to a certain extent. Therefore, when the environmental load is small and relatively stable, the anchor chain energy dissipation member can effectively reduce the frequency and peak value of the dynamic load received by the anchor chain and the tower barrel structure, and reduce the impact damage of the anchor chain and the tower barrel structure. All the devices of the present invention do not need to be arranged inside the tower barrel, and do not need to occupy the limited space inside the tower barrel. They have the characteristics of flexible arrangement, adjustable and controllable. During the design and installation stages, the vibration damping effect can be adjusted by adjusting the installation quantity, position, spacing, etc. During the use stage, the anchor chain can be tightened or released through the power system, and the vibration damping effect of the anchor chain energy dissipation members in any direction can be readjusted, thereby extending the service life of the offshore wind power structure. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0027] Figure 1 Schematic diagram of the overall structure of the present invention;

[0028] Figure 2 Schematic diagram of the overall structure of the shock-absorbing anchor head of the present invention;

[0029] Figure 3 Schematic diagram of the split state of the overall structure of the shock-absorbing anchor head of the present invention;

[0030] Figure 4 Schematic diagram of the overall structure of the shock-absorbing connecting piece of the present invention;

[0031] Figure 5 Schematic diagram of the connection state between the upper connecting ear and the lower connecting ear of the present invention;

[0032] Figure 6 Schematic diagram of the overall structure of the anchor chain energy dissipator of the present invention;

[0033] Figure 7 Schematic diagram of the overall structure of the damping structure of the present invention;

[0034] Figure 8 Schematic diagram of the overall structure of the stiffness structure of the present invention;

[0035] Wherein, 1. Shock-absorbing anchor head; 11. Taper head; 12. Shock-absorbing connecting piece; 121. Limiting inner tube; 122. Arc-shaped outer plate; 123. Compression spring; 124. Upper connecting ear; 125. Lower connecting ear; 126. Bolt; 127. Square hole; 128. Arc-shaped hole; 13. Hoop; 14. Pressure plate; 2. Flexible anchor chain; 21. Connecting anchor chain; 22. Pressure plate zipper; 3. Anchor chain energy dissipator; 31. Damping structure; 311. Rubber pad; 312. Telescopic spring; 313. Telescopic rod; 32. Stiffness structure; 321. Steel plate; 322. Steel truss; 323. Screw; 324. Slide rail; 4. Anchor chain fixing ring; 5. Floating platform; 6. Tower barrel; 7. Suction bucket foundation. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Referring to Figures 1 - 8 , the present invention provides a vibration damping and energy dissipation anchor chain for a floating offshore wind power structure, including:

[0039] An anchor chain fixing ring 4, which is installed on the barrel of the tower 6 located on the floating platform 5;

[0040] A vibration damping component, including a plurality of vibration damping anchor heads 1 and a plurality of flexible anchor chains 2. The tail end of the vibration damping anchor head 1 is connected to the anchor chain fixing ring 4 through the flexible anchor chain 2. The head end of the vibration damping anchor head 1 extends into the seabed foundation for anchoring and vibration damping of the tower 6. The floating platform 5 is connected to the suction bucket foundation 7 in the seabed foundation through the flexible anchor chain 2;

[0041] An energy dissipation component, including a plurality of anchor chain energy dissipation members 3, which are installed on the flexible anchor chain 2 for vibration damping and energy dissipation of the flexible anchor chain 2.

[0042] In an embodiment of the present invention, the vibration damping anchor head 1 can deform to a certain extent both axially and longitudinally. Therefore, when suddenly encountering extreme environmental loads, when the anchor chain energy dissipation member 3 reaches the deformation limit, the vibration damping effect can be further enhanced by gradually stretching the vibration damping anchor head 1 to increase the mutual friction area with the foundation soil. On the premise of ensuring strength, the anchor chain energy dissipation member 3 can deform elastically to a certain extent. Therefore, when the environmental load is small and relatively stable, the anchor chain energy dissipation member 3 can effectively reduce the frequency and peak value of the dynamic load on the anchor chain and the tower structure, and reduce the impact damage of the anchor chain and the tower structure. The equipment of the present invention does not need to be arranged inside the tower, without occupying the limited space inside the tower, and has the characteristics of flexible arrangement, adjustable and controllable. During the design and installation stages, the vibration damping effect can be adjusted by adjusting the installation quantity, position, spacing, etc. During the use stage, the anchor chain can be tightened or released through the power system, and the vibration damping effect of the anchor chain energy dissipation member 3 in any direction can be readjusted, thereby extending the service life of the offshore wind power structure.

[0043] As an alternative embodiment, the vibration damping anchor head 1 includes a tapered head 11, a plurality of vibration damping connectors 12, a plurality of hoop rings 13 and a plurality of pressing plates 14. Two adjacent vibration damping connectors 12 are connected by a hoop ring 13. The vibration damping connector 12 at the front end is connected to the vibration damping anchor head 1. The vibration damping connector 12 is connected to the pressing plate 14, and the pressing plate 14 is connected to the flexible anchor chain 2.

[0044] As an alternative embodiment, the vibration damping connector 12 includes a limiting inner tube 121. One end of a compression spring 123 is fixedly connected to the outer side wall of the limiting inner tube 121 in the circumferential direction. The other end of the compression spring 123 is fixedly connected to an arc-shaped outer plate 122. Two adjacent arc-shaped outer plates 122 are connected. The top end and the bottom end of the arc-shaped outer plate 122 are respectively fixedly connected with an upper connecting ear 124 and a lower connecting ear 125. The upper connecting ears 124 and the lower connecting ears 125 on two adjacent vibration damping connectors 12 are connected by bolts 126. The hoop ring 13 is located at the connection of the upper connecting ear 124 and the lower connecting ear 125.

[0045] Specifically, the vibration damping principle of the vibration damping anchor head 1 is as follows: By slowly pulling the pressing plate 14 out of the arc-shaped hole 128 through the pressing plate zipper 22, the fixed constraint of the hoop ring 13 on the vibration damping connector 12 is gradually released, and the pressing plate 14 will bounce outwards under the action of the compression spring 123; The vibration damping connector 12 with the fixed constraint released will have the ability of elastic deformation, and the vibration energy can be consumed through the compression and rebound of the compression spring 123 and the mutual friction between the arc-shaped outer plate 122 and the foundation soil, so as to achieve the vibration damping effect.

[0046] As an alternative embodiment, the anchor chain energy dissipator 3 includes a damping structure 31 and a stiffness structure 32, and the damping structure 31 is arranged on the stiffness structure 32;

[0047] The stiffness structure 32 includes two steel plates 321, which are respectively connected to the two flexible anchor chains 2. Slide rails 324 are arranged at the top and bottom of the opposite side walls of the two steel plates 321. A steel truss 322 is slidably connected between the opposite two slide rails 324. The two steel trusses 322 are connected by a screw 323.

[0048] In an embodiment of the present invention, through the arranged steel truss 322, when the connecting anchor chain 21 is subjected to a tensile load, it is prevented that the telescopic rod 313 and the telescopic spring 312 are excessively stretched and broken; when the connecting anchor chain 21 is unloaded, it is prevented that the telescopic rod 313 and the telescopic spring 312 contract rapidly and are damaged.

[0049] As an alternative embodiment, the damping structure 31 includes two rubber pads 311, which are respectively fixedly connected to the two steel plates 321. A plurality of telescopic rods 313 are fixedly connected between the two rubber pads 311, and a telescopic spring 312 is sleeved on the telescopic rod 313.

[0050] In one embodiment of the present invention, when the connecting anchor chain is unloaded, the rubber pad 311 is used to absorb the released energy of the telescopic rod 313 and the telescopic spring 312 of the damping structure 31, thereby extending the service life of the anchor chain energy dissipator 3.

[0051] Specifically, the vibration damping principle of the anchor chain energy dissipator 3 is as follows: when the connecting anchor chain 21 is subjected to a tensile load, the steel truss 322 slides towards the center position of the steel plate 321, and the telescopic rod 313 and the telescopic spring 312 of the damping structure 31 undergo tensile deformation, which will slow down the tensioning speed of the connecting anchor chain 21 and reduce the impact damage of the connecting anchor chain 21; when the connecting anchor chain 21 is unloaded, the steel truss 322 slides towards the edge position of the steel plate 321, and the telescopic rod 313 and the telescopic spring 312 of the damping structure 31 contract, which will reduce the relaxation speed of the connecting anchor chain 21.

[0052] As an alternative embodiment, the flexible anchor chain 2 includes a connecting anchor chain 21 and a pressing plate zipper 22. The anchor chain fixing ring 4, the lower connecting ear 125 and the steel plate 321 are connected by the connecting anchor chain 21, and the pressing plate zipper 22 is connected to the pressing plate 14.

[0053] In one embodiment of the present invention, the connecting anchor chain 21 is used to damp the connection between the anchor head 1, the anchor chain energy dissipator 3 and the tower barrel 6, and at the same time play the function of dynamic load transfer among the three; the pressing plate zipper 22 is only used to pull the pressing plate 14 and does not play the function of bearing dynamic load, and its tensile strength can be less than that of the connecting anchor chain 21.

[0054] As an alternative embodiment, a connecting ring is provided on the steel plate 321, and the connecting ring is connected to the connecting anchor chain 21.

[0055] In one embodiment of the present invention, holes are formed in both the rubber pad 311 and the steel plate 321 for installing the connecting ring, and the connecting ring is used to connect with the connecting anchor chain 21.

[0056] As an alternative embodiment, square holes 127 are formed in both the limiting inner tube 121 and the arc-shaped outer plate 122.

[0057] In one embodiment of the present invention, square holes 127 are formed in both the limiting inner tube 121 and the arc-shaped outer plate 122 to facilitate the entry of seawater and seabed foundation soil.

[0058] As an alternative embodiment, arc-shaped holes 128 are formed in both the arc-shaped outer plate 122 and the hoop 13 for passing through the pressing plate 14.

[0059] In one embodiment of the present invention, the arc-shaped holes 128 facilitate the passing of the pressing plate 14.

[0060] A method for using a vibration damping and energy dissipating anchor chain for a floating offshore wind power structure includes the following steps:

[0061] Connect the floating platform 5 to the suction bucket foundation 7 in the seabed foundation through the flexible anchor chain 2;

[0062] Throw a number of damping anchor heads 1 onto the surface of the seabed foundation along the circumferential direction of the tower barrel 6, and embed the damping anchor heads 1 into the seabed foundation through the stretched flexible anchor chain 2;

[0063] Install a number of anchor chain energy dissipators 3 on the flexible anchor chain 2;

[0064] Install the other end of the flexible anchor chain 2 on the anchor chain fixing ring 4, and install the anchor chain fixing ring 4 on the tower barrel 6.

[0065] In an embodiment of the present invention, during use, first fabricate and assemble the damping anchor head 1. Pass the pressing plate 14 through the arc-shaped holes 128 of the damping connecting piece 12 and the hoop 13 to realize the preloading of multiple groups of compression springs 123 inside the damping anchor head 1. Fabricate and assemble the anchor chain energy dissipator 3. Control the vertical distance between the steel plates 321 through the steel truss 322, so that the distance between the steel plates 321 is slightly greater than the natural length of the telescopic springs 312 and the telescopic rods 313, realizing the pre-tensioning of multiple groups of telescopic springs 312 inside the anchor chain energy dissipator 3. Connect the damping anchor head 1 and the anchor chain energy dissipator 3 with an anchor chain and transport them to the site.

[0066] Throw the damping anchor head 1 onto the surface of the seabed foundation outside the floating offshore wind turbine. Wind the anchor chain around the tower barrel 6. Continuously stretch the connecting anchor chain 21 through the power system until the damping anchor head 1 is completely embedded in the seabed foundation. Fix the anchor chain on the tower barrel 6 with the anchor chain fixing ring 4.

[0067] Repeat the above steps, and gradually arrange the damping and energy dissipating anchor chains in a fan shape outside the floating offshore wind turbine until the dynamic indexes such as the maximum acceleration during the normal operation and power generation stage of the floating offshore wind turbine meet the requirements, and then stop arranging the damping and energy dissipating anchor chains.

[0068] When the floating offshore wind turbine structure suddenly encounters extreme wind and wave loads and all the anchor chain energy dissipators 3 reach the energy dissipation limit, release the fixing of the anchor chain fixing ring 4 on the pressing plate zipper 22, and stretch the pressing plate zipper 22 and the pressing plate 14 through the power system, so that the damping connecting piece 12 gradually opens to play the role of damping and energy dissipation.

[0069] After the extreme wind and wave loads pass, stretch or release the anchor chain through the power system to adjust the stretching state of the telescopic springs 312 inside the anchor chain energy dissipator 3 to prepare for the next extreme wind and wave loads.

[0070] The overall principle of the present invention:

[0071] The vibration damping principle of the vibration damping anchor head 1 is as follows: By slowly pulling the pressing plate 14 out of the arc-shaped hole 128 through the pressing plate zipper 22, the fixing constraint of the hoop 13 on the vibration damping connecting piece 12 is gradually released, and the pressing plate 14 will bounce outwards under the action of the compression spring 123; The vibration damping connecting piece 12 with the fixing constraint released will have the ability of elastic deformation, and can consume vibration energy through the compression and rebound of the compression spring 123 and the mutual friction between the arc-shaped outer plate 122 and the foundation soil, so as to achieve the vibration damping effect.

[0072] The vibration damping principle of the anchor chain energy dissipation part 3 is as follows: When the connecting anchor chain 21 is subjected to a tensile load, the steel truss 322 slides towards the center position of the steel plate 321, and the telescopic rod 313 and the telescopic spring 312 of the damping structure 31 undergo tensile deformation, which will slow down the tensioning speed of the connecting anchor chain 21 and reduce the impact damage of the connecting anchor chain 21; When the connecting anchor chain 21 is unloaded, the steel truss 322 slides towards the edge position of the steel plate 321, and the telescopic rod 313 and the telescopic spring 312 of the damping structure 31 contract, which will reduce the relaxation speed of the connecting anchor chain 21.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0074] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure, characterized in that: include: An anchor chain fixing ring (4) is installed on the body of a tower (6) located on a floating platform (5); A vibration reduction assembly, comprising a plurality of vibration reduction anchor heads (1) and a plurality of flexible anchor chains (2), wherein the tail end of the vibration reduction anchor head (1) is connected to the anchor chain fixing ring (4) via the flexible anchor chain (2), the head end of the vibration reduction anchor head (1) extends into the seabed foundation for anchoring and reducing vibration of the tower (6), and the floating platform (5) is connected to the suction cylinder foundation (7) in the seabed foundation via the flexible anchor chain (2); The energy dissipation assembly comprises a plurality of anchor chain energy dissipation members (3), wherein the anchor chain energy dissipation members (3) are mounted on the flexible anchor chain (2) and are used to reduce vibration and dissipate energy of the flexible anchor chain (2).

2. A vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 1, characterized in that: The vibration-damping anchor head (1) comprises a cone head (11), a plurality of vibration-damping connecting pieces (12), a plurality of hoops (13) and a plurality of pressure plates (14); two adjacent vibration-damping connecting pieces (12) are connected via the hoops (13); the vibration-damping connecting piece (12) at the front end is connected to the vibration-damping anchor head (1); the vibration-damping connecting piece (12) is connected to the pressure plate (14); and the pressure plate (14) is connected to the flexible anchor chain (2).

3. The vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 2, characterized in that: The vibration-damping connecting piece (12) comprises a limiting inner tube (121), one end of a compression spring (123) is fixedly connected to the outer wall of the limiting inner tube (121) in the circumferential direction, the other end of the compression spring (123) is fixedly connected to an arc-shaped outer plate (122), two adjacent arc-shaped outer plates (122) are connected, the top and bottom ends of the arc-shaped outer plates (122) are respectively fixedly connected to an upper connecting ear (124) and a lower connecting ear (125), the upper connecting ear (124) and the lower connecting ear (125) on two adjacent vibration-damping connecting pieces (12) are connected by bolts (126), and the hoop (13) is located at the connection between the upper connecting ear (124) and the lower connecting ear (125).

4. The vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 3, characterized in that: The anchor chain energy dissipator (3) comprises a damping structure (31) and a rigidity structure (32), wherein the damping structure (31) is arranged on the rigidity structure (32); The rigid structure (32) comprises two steel plates (321) respectively connected to the two flexible anchor chains (2); the top and bottom ends of the two opposite side walls of the two steel plates (321) are provided with slide rails (324); a steel truss (322) is slidably connected between the two slide rails (324); and the two steel trusses (322) are connected via screws (323).

5. The vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 4, characterized in that: The damping structure (31) comprises two rubber pads (311) which are respectively fixedly connected to the two steel plates (321); a plurality of telescopic rods (313) are fixedly connected between the two rubber pads (311); and telescopic springs (312) are sleeved on the telescopic rods (313).

6. A vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 5, characterized in that: The flexible anchor chain (2) comprises a connecting anchor chain (21) and a pressure plate zipper (22); the anchor chain fixing ring (4), the lower connecting ear (125) and the steel plate (321) are connected via the connecting anchor chain (21); and the pressure plate zipper (22) is connected to the pressure plate (14).

7. A vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 6, characterized in that: The steel plate (321) is provided with a connecting ring, and the connecting ring is connected to the connecting anchor chain (21).

8. The vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 3, characterized in that: The limiting inner tube (121) and the arc-shaped outer plate (122) are both provided with square holes (127).

9. The vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 3, characterized in that: The arc-shaped outer plate (122) and the hoop (13) are both provided with arc-shaped holes (128) for passing the pressing plate (14).

10. A method for using a vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure, applicable to the vibration-reducing and energy-dissipating anchor chain for a floating offshore wind power structure according to claim 1, characterized in that: The following steps are involved: Connecting the floating platform (5) to the suction cylinder foundation (7) in the seabed foundation via the flexible anchor chain (2); Throwing a plurality of the vibration-damping anchor heads (1) along the circumference of the tower (6) to the surface of the seabed foundation, and embedding the vibration-damping anchor heads (1) into the seabed foundation by stretching the connected flexible anchor chains (2); Installing a plurality of anchor chain energy dissipators (3) on the flexible anchor chain (2); The other end of the flexible anchor chain (2) is mounted on the anchor chain fixing ring (4), and the anchor chain fixing ring (4) is mounted on the tower (6).

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