Foundation structure of offshore wind driven generator with vibration reduction function

Abstract

The invention discloses an offshore wind turbine foundation structure with a vibration reduction function, which comprises a foundation platform, an underwater double-layer nested pile foundation mechanism is fixedly arranged at the bottom of the foundation platform, and a floating bearing mechanism is fixedly mounted on the surface of the foundation platform; a floating vibration reduction mechanism is installed above the floating bearing mechanism, and the upper side of the floating vibration reduction mechanism is fixedly connected with a wind driven generator tower. The bottom of the wind driven generator tower is erected on the foundation platform through the floating vibration reduction mechanism and the floating bearing mechanism. According to the foundation structure of the offshore wind driven generator with the vibration reduction function, vibration energy can be effectively absorbed and dissipated through elastic deformation of the damping core sleeve, an excellent buffering and vibration reduction effect is provided for a towering tower, and structural fatigue is remarkably reduced; the floating support capable of being leveled in a self-adaptive mode is jointly composed of a floating bearing mechanism and a floating vibration reduction mechanism, and a floating foundation of the system is formed. Normal use of the offshore wind turbine is guaranteed, and collapse is avoided.

Description

Technical Field

[0001] This invention relates to the field of construction equipment, specifically to a foundation structure for an offshore wind turbine with vibration reduction function. Background Technology

[0002] Offshore wind turbines are electrical devices that convert wind energy into mechanical work, which drives a rotor to rotate and ultimately output alternating current. They consist of a wind turbine, a charger, and a digital inverter. The wind turbine itself is composed of a nose cone, a rotor, a tail fin, and blades. The blades receive wind power and convert it into electrical energy through the nose cone. The tail fin ensures the blades always face the wind direction to maximize wind energy. The rotor allows the nose cone to rotate flexibly, enabling the tail fin to adjust its direction. The rotor in the nose cone is a permanent magnet, and the stator windings cut magnetic lines of force to generate electricity. Existing offshore wind turbines have some drawbacks. The high humidity and salt content of the air at sea can wet the blades during the rainy season, and the casing is susceptible to corrosion. Furthermore, when a wind turbine is blown over by a strong typhoon, it is impossible to float the turbine to the surface in time to reduce the degree of seawater erosion.

[0003] To address the aforementioned issues, a search revealed Chinese patent CN213175933U, which discloses a moisture-proof device for offshore wind turbines. The device includes a base, with a tower fixedly connected to its upper end. A horizontal bar runs through the surface of the tower, and buoyancy rings are positioned on both sides of the tower's surface along the horizontal bar. A motor housing is located at the top of the tower, with a wind deflector at one end and a tail box connected to the other end. Blades are arranged on the surface of the wind deflector, and a tail rod runs through one end of the tail box, with a tail fin on its surface.

[0004] While the aforementioned devices can prevent moisture and increase the overall buoyancy of the motor, in actual use, especially when installing offshore wind turbines in nearshore or shallow waters, the base of the offshore wind turbine tower is fixed to a pile foundation inserted into the seabed. When the offshore wind turbine is operating at sea, the periodic impact of waves, the turbulent vibration of the sea wind, and the mechanical vibration of the generator during operation, such as blade rotation imbalance and gearbox operation impact, will continuously generate vibration energy. Since there is no vibration damping mechanism between the base of the tower and the pile foundation, these vibrations will be directly transmitted to the connection parts between the tower and the pile foundation, such as flanges, welds, and the pile foundation itself. This causes the connection nodes to be subjected to alternating stress for a long time, which can easily lead to fatigue damage such as weld cracking, bolt loosening, or pile foundation concrete cracking, thereby affecting the normal use of the offshore wind turbine and even causing it to collapse. Summary of the Invention

[0005] The purpose of this invention is to provide a foundation structure for an offshore wind turbine with vibration reduction function, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a foundation structure for an offshore wind turbine with vibration reduction function is provided, including a foundation platform. An underwater double-layer nested pile foundation mechanism is fixedly installed at the bottom of the foundation platform, and a floating bearing mechanism is fixedly installed on its surface. A floating vibration damping mechanism is installed above the floating bearing mechanism, and a wind turbine tower is fixedly connected to the upper side of the floating vibration damping mechanism. The bottom of the wind turbine tower is supported on the foundation platform via the floating vibration damping mechanism and the floating bearing mechanism, and a tower base is fixedly installed at its bottom. Multiple sets of perforations are equidistantly opened on the annular surface of the tower base. A pile foundation platform is fixed at the top of the underwater double-layer nested pile foundation mechanism, and a central pile foundation is located at the center of its bottom. Five sets of edge pile foundations are equidistantly installed on the outer side of its bottom.

[0007] As an improvement to the above scheme, the underwater double-layer nested pile foundation mechanism includes a pile foundation platform, a central pile foundation, an edge pile foundation, an outer reinforcing frame, and an inner reinforcing frame. The bottom of the edge pile foundation is inclined away from the pile foundation platform, and an outer reinforcing frame is fixedly installed on its outer ring surface. Adjacent sets of edge pile foundations are fixed together by the outer reinforcing frame, and the outer reinforcing frame consists of five sets of parallel horizontal bars and one set of vertical pipes.

[0008] As an improvement to the above scheme, the five sets of edge pile foundations have a centrally symmetrical structure, and their tops are fixed to pile foundation platforms, while their inner sides are fixed to inner reinforcing frames; the end of the inner reinforcing frame away from the edge pile foundation is fixedly connected to the outer ring surface of the central pile foundation, and five sets of inner reinforcing frames are equidistantly arranged on the outer ring surface of the central pile foundation; the central pile foundation is fixedly connected to the five sets of edge pile foundations respectively through the five sets of inner reinforcing frames on the outside.

[0009] As an improvement to the above scheme, the structure of the central pile foundation is consistent with that of the edge pile foundation, and the top of the central pile foundation is fixedly connected to the pile foundation platform; the central pile foundation includes an outer pile foundation cylinder, an inner pile foundation rod, a tip, and an auxiliary welded sealing plug. The outer pile foundation cylinder is fixedly connected to the bottom of the pile foundation platform, and the inner pile foundation rod is inserted inside it; one end of the inner pile foundation rod is fixedly provided with a conical tip, and the other end is welded with a cylindrical auxiliary welded sealing plug; a filling space is formed between the inner pile foundation rod and the outer pile foundation cylinder, the inner pile foundation rod passes through the interior of the outer pile foundation cylinder, and the auxiliary welded sealing plug at its top is welded and fixed to the upper side of the interior of the outer pile foundation cylinder.

[0010] As an improvement to the above solution, the floating bearing mechanism includes a base, a stabilizing platform, an L-shaped frame, a pad, studs A, a central platform, a reinforcing base, a bearing platform, and studs B. The base is circular, and multiple sets of perforations are equidistantly formed on its outer surface. Studs A are inserted into the interior of these perforations. Studs A pass through the perforations and are fixed by nuts, and their bottoms are fixedly connected to the pile foundation platform. A central pile foundation is fixedly set in the middle of the base. Multiple sets of L-shaped frames are equidistantly fixed to the outer ring surface of the central pile foundation, and their tops are fixed... A central platform is connected; the central platform is hexagonal, and a reinforcing seat is fixedly installed on each of its six sides, while a stabilizing platform is fixedly connected to the bottom of the reinforcing seat; multiple sets of circular holes adapted to the size of stud A are equidistantly opened on the pad, and eight sets of quick-connect seats are equidistantly arranged on its bottom; eight sets of quick-connect grooves are equidistantly opened on the surface of the base, and the quick-connect grooves are adapted to the size of the quick-connect seats, and the quick-connect seats are inserted into the inside of the quick-connect grooves; the pad is annular, and it covers the surface of the base and is fixed by stud A and nuts.

[0011] As an improvement to the above solution, the support platform is configured as six groups that are respectively fixed to the six sides of the central platform, and a circular locking cover is screwed to its surface. At the same time, a spherical buffer groove is opened inside. The bottom of the stud B is fixedly connected to an adapter ball, and the size of the adapter ball is adapted to the buffer groove. A rubber pad is fixed to the outside of the adapter ball, and it is movably connected to the buffer groove through the outer rubber pad.

[0012] As an improvement to the above solution, the central platform includes a damping space, a docking groove, a damping core sleeve, docking strips, damping columns, stabilizing holes, and stabilizing columns. The damping space is located inside the central platform, and six sets of stabilizing columns are equidistantly fixed at its internal corners. A damping core sleeve is inserted inside the central platform. Six sets of docking strips are fixedly connected to the outer corners of the damping core sleeve, and damping columns are equidistantly arranged on its inner side. Stabilizing holes are formed inside each damping column, and the size of the stabilizing holes is adapted to the size of the stabilizing column. The six sets of stabilizing columns... The fixed columns are respectively inserted into the stabilizing holes opened inside the six sets of damping columns; multiple sets of docking slots are also equally spaced on the inner side of the central platform, and the dimensions of the docking slots are adapted to the docking strips. At the same time, the docking strips are inserted into the docking slots, and both the docking slots and the docking strips are dovetail-shaped; the damping core is fitted inside the damping space and positioned and installed through multiple sets of quick-connect slots and docking strips; a damping channel is formed between two adjacent sets of damping columns, and a seat is inserted inside this damping channel, while a floating vibration damping mechanism is installed above it.

[0013] As an improvement to the above solution, the floating vibration damping mechanism includes a plate, a stud C, a rubber seat, an annular gasket, a tower base, a slot, a pressure platform, a docking seat, and a core floating platform. The core floating platform is fixedly connected inside the pressure platform, and a plate is fixedly connected to its surface. Six sets of seats are fixedly arranged at equal intervals on the outer side of the core floating platform. The core floating platform is a columnar structure made of metal. The outer side of the core floating platform is elastically connected to the central platform through a damping core sleeve.

[0014] As an improvement to the above solution, six sets of docking seats are installed at equal intervals on the bottom of the pressure table, and through holes are opened on the docking seats. At the same time, studs B are inserted into the through holes. The studs B pass through the circular docking seats and are fixedly connected by nuts.

[0015] As an improvement to the above solution, the pressure platform and its circular interface plate are concentrically arranged, and multiple sets of studs C are installed at equal intervals on the outer surface of the interface plate. At the same time, a cylindrical rubber seat is fixed to the bottom of each stud C. Multiple sets of mounting holes are equally spaced on the annular gasket and the tower base, and a slot is provided at the bottom of the mounting hole on the tower base. The slot is engaged with the outer side of the rubber seat, and the studs C pass through the annular gasket and the tower base in sequence and are screwed and fixed with nuts.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution utilizes a core floating platform to exert omnidirectional compression on the surrounding damping core sleeve when the wind turbine tower sways in any direction due to sea winds. Through the elastic deformation of the damping core sleeve itself, it effectively absorbs and dissipates vibration energy, providing excellent buffering and vibration reduction for the tall tower and significantly reducing structural fatigue. The self-adjusting floating support is composed of a floating load-bearing mechanism and a floating vibration reduction mechanism, forming a floating foundation for the system. This ensures the normal operation of the offshore wind turbine and prevents it from collapsing. 2. This design utilizes the spherical connection between the bottom of stud B and the spherical surface of the bearing platform to provide a degree of freedom to the entire superstructure. This allows the tower base and tower to make minor adaptive adjustments and displacements when subjected to external forces, rather than rigidly resisting them. This better adapts to the amplitude of the sway and avoids stress concentration. The stable and uniform load distribution, with six sets of equidistant docking seats and bearing platforms arranged symmetrically, ensures that the enormous vertical pressure and overturning moment from the tower can be evenly distributed and transferred to the foundation platform and the underwater double-layer nested pile foundation mechanism below, avoiding local overload and enhancing the stability and reliability of the entire support system. 3. This design utilizes multiple sets of dovetail-shaped docking slots and docking strips equidistantly spaced on the inner side of the central platform. The docking strips are inserted into the docking slots, and the unique dovetail design greatly increases the contact area and friction between them. When the wind turbine tower sways and generates force, the dovetail-shaped docking structure can better resist shear force, prevent the damping core sleeve from shifting within the damping space, and further ensure the stability of the entire structure. At the same time, this design makes the positioning of the damping core sleeve within the damping space more precise, ensuring that it can accurately buffer the vibration of the wind turbine tower. 4. This solution works by transmitting the vibration energy generated when the wind turbine tower sways to the damping channel through the interlock. The special structure and damping columns in the damping channel can absorb, disperse and buffer the vibration energy multiple times. Combined with the synergistic effect of the floating vibration reduction mechanism, the vibration amplitude transmitted to the wind turbine tower is greatly reduced, effectively protecting the wind turbine tower and its internal equipment, extending its service life, and ensuring the stable operation of the wind turbine in shallow sea areas. 5. This solution uses multiple sets of studs C, equidistantly installed on the outer side of the plate surface, in conjunction with a cylindrical rubber seat fixed at the bottom, to improve the buffering and vibration reduction performance. When the wind turbine tower is subjected to vibration from the impact of sea wind, the rubber seat, with its good elasticity, acts like a rubber buffer pad in a car shock absorber, effectively absorbing and dispersing vibration energy, reducing the impact of vibration on the tower base and the entire structure, extending the service life of the equipment, and ensuring the stable operation of the wind turbine in complex marine environments. 6. This scheme forms a pile group foundation by deeply inserting the central pile foundation, five sets of edge pile foundations, and internal inner pile foundation rods into the seabed; effectively increasing the contact area between the structure and the seabed, thereby providing vertical bearing capacity to support the huge weight of the entire wind turbine tower, improving the ability to resist horizontal loads, such as resisting the overturning moment caused by wind and waves, and effectively improving the overall stability; with significant strengthening and toughening effects. 7. This scheme adds a skeleton to the main pile foundation by driving inner pile rods into the center and edge pile foundations again; the double-layer nested plug structure greatly enhances the stiffness and bending resistance of a single pile foundation, enabling it to more effectively resist deformation caused by long-term loads such as ocean currents and soil creep, making the overall structure more robust and durable, and improving seismic and fatigue resistance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view schematic diagram of the structure of the present invention; Figure 2 This is a bottom view of the structure of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a rear view of the structure of the present invention; Figure 5 This is a schematic diagram of the assembled structure of the present invention; Figure 6 The structure of this invention Figure 5 Top view; Figure 7 This is a schematic diagram of the floating load-bearing mechanism, the floating vibration reduction mechanism, and the wind turbine tower structure of the present invention; Figure 8 The structure of this invention Figure 7 A bottom view; Figure 9 The structure of this invention Figure 7 Cross-sectional view; Figure 10 The structure of this invention Figure 9 Rear view; Figure 11 The structure of this invention Figure 9 Side view; Figure 12 This is a schematic diagram of the floating load-bearing mechanism of the present invention; Figure 13 This is a rear view of the floating load-bearing mechanism of the present invention; Figure 14 This is a schematic diagram of the external structure of the floating load-bearing mechanism of the present invention; Figure 15 This is a schematic diagram of the core floating platform and its connecting structure of the present invention; Figure 16 This is a top view of the wind turbine tower and its connecting structure according to the present invention. Figure 17 This is an exploded view of the floating load-bearing mechanism of the present invention; Figure 18 This is an exploded side view of the floating load-bearing mechanism of the present invention; Figure 19 This is a schematic diagram of the underwater double-layer nested pile foundation mechanism of the present invention; Figure 20 This is a cross-sectional view of the underwater double-layer nested pile foundation mechanism of the present invention; Figure 21 This is a schematic diagram of the central pile foundation structure of the present invention. Attached Figure

[0019] 100. Foundation platform; 200. Underwater double-layer nested pile foundation mechanism; 21. Pile foundation platform; 22. Central pile foundation; 221. Outer pile foundation tube; 222. Inner pile foundation rod; 223. Tip; 224. Auxiliary welded sealing plug; 23. Edge pile foundation; 24. Outer reinforcing frame; 25. Inner reinforcing frame; 300. Floating bearing mechanism; 31. Base; 32. Stabilizing platform; 33. L-shaped frame; 34. Pad; 341. Quick-connect seat; 342. Quick-connect groove; 35. Stud A; 36. Central platform; 361. Damping space; 362. Pair 363. Connecting slot; 364. Damping core sleeve; 365. Connecting strip; 366. Damping column; 367. Stabilizing hole; 368. Stabilizing column; 39. Reinforcing seat; 300. Bearing platform; 31. Stud B; 32. Adaptor ball; 393. Rubber gasket; 400. Locking cover; 41. Floating vibration damping mechanism; 42. Plate; 43. Stud C; 44. Rubber seat; 45. Annular gasket; 46. Tower base; 47. Slot; 48. Pressing platform; 49. Connecting seat; 400. Core floating platform; 41. Plate; 500. Wind turbine tower. Detailed Implementation

[0020] The embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0021] A foundation structure for an offshore wind turbine with vibration reduction function, such as Figure 1-6 As shown, the structure includes a foundation platform 100, an underwater double-layer nested pile foundation mechanism 200 fixedly installed at the bottom of the foundation platform 100, and a floating bearing mechanism 300 fixedly installed on its surface; a floating vibration damping mechanism 400 is installed above the floating bearing mechanism 300, and a wind turbine tower 500 is fixedly connected to the upper side of the floating vibration damping mechanism 400; the bottom of the wind turbine tower 500 is supported on the foundation platform 100 through the floating vibration damping mechanism 400 and the floating bearing mechanism 300, and a tower base 45 is fixedly installed at its bottom, with multiple sets of perforations evenly spaced on the annular surface of the tower base 45; a pile foundation platform 21 is fixedly installed at the top of the underwater double-layer nested pile foundation mechanism 200, and a central pile foundation 22 is set at the center of its bottom, while five sets of edge pile foundations 23 are evenly spaced on the outer side of its bottom.

[0022] like Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown: The floating bearing mechanism 300 includes a base 31, a stabilizing platform 32, an L-shaped frame 33, a pad 34, studs A35, a central platform 36, a reinforcing seat 37, a bearing platform 38, and studs B39. The base 31 is circular, and multiple sets of perforations are equidistantly opened on its outer surface. Studs A35 are inserted into the inside of these perforations. The studs A35 pass through the perforations and are fixed by nuts, and their bottoms are fixedly connected to the pile foundation platform 21. A central pile foundation 22 is fixedly installed in the middle of the base 31. Multiple sets of L-shaped frames 33 are equidistantly fixed on the outer ring surface of the central pile foundation 22, and the central platform is fixedly connected to its top. 36; The center platform 36 is a regular hexagon, and a reinforcing seat 37 is fixedly installed on each of its six sides. At the same time, a stabilizing platform 32 is fixedly connected to the bottom of the reinforcing seat 37; The pad 34 has multiple sets of round holes that are adapted to the size of the stud A35 at equal intervals, and eight sets of quick-connect seats 341 are provided at equal intervals at its bottom. The surface of the base 31 has eight sets of quick-connect grooves 342 at equal intervals. The quick-connect grooves 342 are adapted to the size of the quick-connect seats 341, and the quick-connect seats 341 are inserted into the inside of the quick-connect grooves 342. The pad 34 is annular and covers the surface of the base 31 and is fixed by stud A35 and nuts.

[0023] like Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown: The support platform 38 is configured as six groups, which are respectively fixed to the six sides of the central platform 36, and a circular locking cover 393 is screwed to its surface. At the same time, a spherical buffer groove is opened inside. The bottom of the stud B39 is fixedly connected to the adapter ball 391, and the size of the adapter ball 391 is adapted to the buffer groove. A rubber pad 392 is fixed to the outside of the adapter ball 391, and it is movably connected to the buffer groove through the outer rubber pad 392.

[0024] like Figure 13 , Figure 14 , Figure 15 , Figure 16 , Figure 17 and Figure 18As shown: The center platform 36 includes a damping space 361, a docking groove 362, a damping core sleeve 363, docking strips 364, damping columns 365, stabilizing holes 366, and stabilizing columns 367. The damping space 361 is located inside the center platform 36, and six sets of stabilizing columns 367 are equidistantly fixed at its internal corners. The damping core sleeve 363 is inserted inside the center platform 361. Six sets of docking strips 364 are fixedly connected to the outer corners of the damping core sleeve 363, and damping columns 365 are equidistantly arranged on its inner side. Stabilizing holes 366 are formed inside the damping columns 365, and the dimensions of the stabilizing holes 366 and stabilizing columns 367 are matched. The six sets of stabilizing columns 365... 67 are respectively inserted into the stabilizing holes 366 opened inside the six sets of damping columns 365; multiple sets of docking grooves 362 are also equally spaced on the inner side of the center platform 36, and the dimensions of the docking grooves 362 and the docking strips 364 are adapted to each other. At the same time, the docking strips 364 are inserted into the inside of the docking grooves 362, and both the docking grooves 362 and the docking strips 364 are dovetail-shaped; the damping core sleeve 363 is positioned and installed inside the damping space 361 through multiple sets of quick-connect grooves 342 and docking strips 364; a damping channel is formed between two adjacent sets of damping columns 365, and a seat 481 is inserted inside the damping channel, and a floating vibration damping mechanism 400 is installed above it.

[0025] like Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown: The floating vibration damping mechanism 400 includes a plate 41, a stud C42, a rubber seat 43, an annular gasket 44, a tower base 45, a slot 451, a pressure table 46, a docking seat 47, and a core floating platform 48. The core floating platform 48 is fixedly connected inside the pressure table 46, and the plate 41 is fixedly connected to its surface. Six sets of seats 481 are fixedly fixed at equal intervals on the outer side of the core floating platform 48. The core floating platform 48 is a columnar structure made of metal. The outer side of the core floating platform 48 is elastically connected to the central platform 36 through a damping core sleeve 363.

[0026] like Figure 7 , Figure 8 and Figure 9 As shown: Six sets of docking seats 47 are installed at equal intervals on the bottom of the pressure table 46, and the docking seats 47 are provided with through holes. At the same time, studs B39 are inserted into the through holes. The studs B39 pass through the circular docking seats 47 and are fixedly connected by nuts.

[0027] like Figure 12 , Figure 13 , Figure 14 and Figure 15As shown: The pressure platform 46 and its circular interface plate 41 are concentric circles. Multiple sets of studs C42 are installed at equal intervals on the outer side of the interface plate 41. At the same time, a cylindrical rubber seat 43 is fixed to the bottom of each stud C42. Multiple sets of mounting holes are opened at equal intervals on the annular gasket 44 and the tower base 45. The mounting holes on the tower base 45 are provided with a slot 451 at the bottom. The slot 451 is engaged with the outer side of the rubber seat 43. Meanwhile, the studs C42 pass through the annular gasket 44 and the tower base 45 in sequence and are screwed and fixed with nuts.

[0028] During use, the wind turbine tower 500 has a tower base 45 at its bottom. The bottom of the tower base 45 is installed on the foundation platform 100 via a floating vibration damping mechanism 400 and a floating bearing mechanism 300. The bottom of the foundation platform 100 is fixedly supported in the shallow sea by an underwater double-layer nested pile foundation mechanism 200. The floating bearing mechanism 300 and the floating vibration damping mechanism 400 are connected by a core floating platform 48 inserted into the damping core sleeve 363 inside the central platform 36. Subsequently, the interface plate 41 moves downward, pressing the core floating platform 48 tightly inside the damping core sleeve 363. At the same time, the docking seat 47 on the outer side of the bottom of the interface plate 41 and the stud B39 on the bearing platform 38 located on the outer side of the central platform 36 are bolted together. Six sets of mating seats 47 and bearing platforms 38 are equidistantly arranged. The adapter ball 391 at the bottom of stud B39 is movably disposed inside the bearing platform 38 and limited by the locking cover 393. This allows the core floating platform 48 to compress the damping core sleeve 363 inside the central platform 36 in any direction when the wind turbine tower 500 sways due to sea winds. The elastic deformation of the damping core sleeve 363 buffers the vibrations experienced by the wind turbine tower 500. Simultaneously, when the wind turbine tower 500 sways, the adapter ball 391 at the bottom of stud B39 can move inside the bearing platform 38 to adapt to the sway amplitude of the wind turbine tower 500. The tower base 45 is open. The floating vibration damping mechanism 400 and the floating bearing mechanism 300 are installed on the foundation platform 100, forming a stable support system. The bottom of the foundation platform 100 is firmly fixed to the shallow sea by the underwater double-layer nested pile foundation mechanism 200, which greatly enhances the overall structure's ability to resist the impact of sea winds and waves, ensuring that the wind turbine tower 500 can operate stably in complex marine environments. In terms of vibration damping performance, the floating bearing mechanism 300 and the floating vibration damping mechanism 400 are connected by a unique connection method between the core floating platform 48 and the central platform 36. That is, the core floating platform 48 is inserted into the damping core sleeve 363 inside the central platform 36, and the plate 41 presses the core floating platform 48 tightly into the damping core sleeve 363. When the wind turbine tower 500 is swayed by sea winds, the core floating platform 48 can compress the damping core sleeve 363 in any direction. The elastic deformation of the damping core sleeve 363 effectively buffers the vibration, greatly reducing the damage to the tower and internal equipment and extending the service life of the equipment. The connection method of six sets of studs B39 equidistantly arranged on the docking seat 47 and the bearing platform 38 has the following advantages: The adapter ball 391 at the bottom of the stud B39 can move inside the bearing platform 38, which can flexibly adapt to the swaying amplitude of the wind turbine tower 500, further improving the adaptability of the structure under different wind conditions, ensuring that the wind turbine can still operate safely and stably in harsh environments such as strong winds, and ensuring power generation efficiency and reliability. Furthermore: the coordination between the core floating platform 48 and the damping core sleeve 363 is crucial to the system; when the wind turbine tower 500 sways in any direction due to sea winds, the core floating platform 48 can exert all-around compression on the damping core sleeve 363 surrounding it; through the elastic deformation of the damping core sleeve 363 itself, it can effectively absorb and dissipate vibration energy, providing excellent buffering and vibration reduction for the towering wind turbine tower 500, significantly reducing structural fatigue; the self-adjusting floating support, the floating load-bearing mechanism 300, and the floating vibration reduction mechanism 400 together constitute the floating foundation of the system; through screw... The bottom of column B39 is fitted with a spherical movable connection between the sphere 391 and the bearing platform 38, giving the entire superstructure a certain degree of freedom. This allows the tower base 45 and the wind turbine tower 500 to make slight adaptive adjustments and displacements when subjected to external swaying, rather than rigidly resisting, thus better adapting to the swaying amplitude and avoiding stress concentration. Stable and uniform load distribution is achieved through six sets of equidistant docking seats 47 and bearing platforms 38 arranged symmetrically, ensuring that the enormous vertical pressure and overturning moment from the wind turbine tower 500 can be evenly distributed and transferred to the foundation platform 100 and the underlying underwater double-layer nested pile foundation. On mechanism 200, local overload is avoided, enhancing the stability and reliability of the entire support system; a combined rigid and flexible working mechanism cleverly integrates rigid connections and flexible buffers; the interface plate 41 presses the core floating platform 48 into the damping core sleeve 363 via studs B39, providing the necessary initial stiffness and connection strength; while the movable design of the adapter ball 391 provides flexibility; the rigid-flexible design enables the system to withstand huge static loads and dynamically respond to and weaken dynamic loads brought by wind and waves; enhancing durability in harsh marine environments, the above-mentioned comprehensive vibration reduction and adaptive mechanisms effectively isolate... The intense vibrations from the wind turbine tower 500 are transmitted to the underwater double-layer nested pile foundation mechanism 200, reducing the fatigue damage to the concrete foundation platform 100 and the pile foundation caused by long-term alternating stress, and helping to extend the service life of the entire wind turbine foundation structure in corrosive, high-dynamic-load shallow marine environments. Through the synergistic effect of the floating vibration damping mechanism 400, the floating bearing mechanism 300, the core floating platform 48, the damping core sleeve 363, and the adapter ball 391, an intelligent, multi-directional vibration damping system is formed, which significantly improves the stability, adaptability, and durability of the wind turbine tower 500 under complex wind and wave loads. As a further description of the above solution: the adapter ball 391 at the bottom of the stud B39 is wrapped with a rubber gasket 392 on its outer side. The adapter ball 391 is movably positioned in the spherical buffer groove inside the support platform 38 through the outer rubber gasket 392. At the same time, the side wall of the support platform 38 is welded to the side wall of the center platform 36, and the bottom of the support platform 38 is welded and supported by the reinforcing seat 37. The rubber gasket 392 has good elasticity and flexibility, which is like building an efficient buffer barrier between the adapter ball 391 and the support platform 38. When the wind turbine tower 500 sways due to the sea breeze, the rubber gasket 392 can absorb a large amount of vibration energy during the movement of the adapter ball 391 in the spherical buffer groove, effectively reducing the impact of vibration on the stud B39 and the entire connection structure, further improving the buffering effect on the vibration of the wind turbine tower 500, and reducing the risk of structural damage due to frequent vibration. At the same time, the rubber gasket 392 can also play a sealing role. The spherical buffer groove inside the support platform 38 prevents external impurities such as seawater and sand from entering, avoiding abnormal wear between the adapter ball 391 and the groove due to impurity intrusion, and extending the service life of related components. The side wall of the support platform 38 is welded to the side wall of the central platform 36, and the bottom is welded and supported by the reinforcing seat 37, which greatly enhances the structural stability. The welded connection makes the support platform 38 and the central platform 36 form a solid whole, which can work together better to bear the various loads transmitted from the wind turbine tower 500. The welded support of the reinforcing seat 37 is like adding an extra stable support to the support platform 38, effectively dispersing the pressure borne by the support platform 38, improving the support platform 38's ability to resist deformation and damage in complex marine environments, ensuring that the entire floating support mechanism 300 can continuously and stably provide reliable support for the wind turbine tower 500, and ensuring the safe and efficient operation of the wind turbine in shallow sea areas. The six sets of stabilizing columns 367, equidistantly fixed at the corners of the damping space 361, work in conjunction with the six sets of connecting strips 364 fixedly connected at the outer corners of the damping core sleeve 363 and the damping columns 365 equidistantly arranged on the inner side, greatly enhancing the stability of the overall structure. The stabilizing columns 367 are respectively inserted into the stabilizing holes 366 opened inside the damping columns 365. This connection method is like installing a sturdy positioning anchor for the damping core sleeve 363, ensuring that when the wind turbine tower 500 sways due to sea winds, the damping core sleeve 363 will not shift or sway excessively, and can always stably perform its vibration buffering function. Moreover, the stabilizing columns 367... The matching design of 67 and stabilizing hole 366 can also disperse the pressure borne by the damping core sleeve 363, making the stress more even and effectively improving the durability of the structure. Secondly, the multiple sets of docking slots 362 and docking strips 364, which are equally spaced on the inner side of the center platform 36, are size-matched and all are dovetail-shaped. The docking strips 364 are inserted into the docking slots 362. The unique dovetail design greatly increases the contact area and friction between the two. When the wind turbine tower 500 shakes and generates force, the dovetail-shaped docking structure can better resist shear force and prevent the damping core sleeve 363 from displacing in the damping space 361, further ensuring the stability of the entire structure. At the same time, This design allows for more precise positioning of the damping core sleeve 363 within the damping space 361, ensuring accurate damping of vibrations from the wind turbine tower 500. Furthermore, the damping core sleeve 363 is positioned and installed within the damping space 361 via multiple quick-connect slots 342 and connecting strips 364. This not only facilitates installation and disassembly of the damping core sleeve 363, aiding in future maintenance and replacement, but also ensures that the position of the damping core sleeve 363 within the damping space 361 is fixed and stable, guaranteeing its efficient vibration damping function even under complex marine environments and wind conditions. Additionally, adjacent sets of damping columns... The damping channel formed between the 365 and the internal interlocking seat 481 and the floating vibration damping mechanism 400 installed above further optimize the vibration reduction effect. When the wind turbine tower 500 shakes, the generated vibration energy will be transmitted to the damping channel through the interlocking seat 481. The special structure in the damping channel and components such as the damping column 365 can absorb, disperse and buffer the vibration energy multiple times. Combined with the synergistic effect of the floating vibration damping mechanism 400, the vibration amplitude transmitted to the wind turbine tower 500 is greatly reduced, effectively protecting the wind turbine tower 500 and its internal equipment, extending its service life, and ensuring the stable operation of the wind turbine in shallow sea areas. Multiple sets of studs A35 are equidistantly arranged on the foundation platform 100. The studs A35 pass through holes in the base 31 and the pad 34, and are secured with nuts, forming a reliable mechanical connection. The arrangement of the studs A35 acts as if tightly binding the foundation platform 100, base 31, and pad 34 together, ensuring that relative displacement between components does not easily occur in complex marine environments such as sea winds and wave impacts, effectively guaranteeing the stability of the bottom support structure of the wind turbine tower 500; similar to the construction industry... Within the structure, the fully threaded double-ended studs achieve double fastening through nuts at both ends, enhancing connection sealing and preventing media leakage. Stud A35 here also ensures the reliability of the structural connection using a similar principle. The surface of the base 31 is fixed to the center platform 36 via the stabilizing platform 32, and multiple sets of L-shaped brackets 33, equidistantly arranged on the outer circumference of the stabilizing platform 32, are screwed to the base 31 at their bottoms, further enhancing the overall structural stability. The combination of the stabilizing platform 32 and the L-shaped brackets 33 forms a robust "bridge" between the base 31 and the center platform 36, effectively transferring and distributing the load borne by the wind turbine tower 500. This design ensures the structure maintains good integrity when subjected to external forces, reducing the risk of damage caused by localized stress concentration, much like the foundation of an ancient building supports the loads of columns, beams, and the roof through a stable structure. The design of the pad 34 also offers unique advantages. Multiple sets of round holes equidistantly spaced on the pad 34, matching the dimensions of the studs A35, ensure precise fit, guaranteeing a stable connection while facilitating installation and disassembly, thus improving construction and maintenance efficiency. The eight sets of quick-connect seats 341 equidistantly positioned at the bottom of the pad 34 are sized to match the eight sets of quick-connect grooves 342 equidistantly spaced on the surface of the base 31. 1. Inserted into the quick-connect slot 342, the quick-connect structure not only enhances the tightness of the connection between the pad 34 and the base 31, but also enables them to be quickly positioned during installation. Just as a precision equipment base provides stable and reliable support for the equipment through precise structural design, it improves the convenience and accuracy of the entire installation process. In addition, the pad 34 is annular and covers the surface of the base 31 and is fixed by stud A35 and nut. This design increases the contact area between the pad 34 and the base 31, which can more evenly distribute the pressure from the upper structure, avoid excessive local stress on the base 31 and damage, thereby extending the service life of the foundation structure. The concentric structure of the pressure platform 46 and the circular interface plate 41 on the surface makes the overall stress distribution more uniform. When the wind turbine tower 500 is working, the complex forces generated by the sea wind and its own rotation can be more evenly transmitted and dispersed through this symmetrical structure, reducing local stress concentration and greatly enhancing structural stability. Just like the symmetrical foundation design of a large building, it ensures that the building remains stable under various external forces. Multiple sets of studs C42 are equidistantly installed on the outer side of the interface plate 41, together with the cylindrical rubber seat 43 fixed at the bottom, to improve the buffering and vibration reduction performance. When the wind turbine tower 500 vibrates due to the impact of the sea wind, the rubber seat 43, with its good elasticity, can effectively absorb and disperse the vibration energy, like the rubber buffer pad in a car shock absorber, reducing the impact of vibration on the tower base 45 and the entire structure, extending the service life of the equipment, and ensuring the smooth operation of wind power generation. The machine operates stably in complex marine environments. Multiple sets of mounting holes on the annular gasket 44 and tower base 45, along with the slots 451 at the bottom of the mounting holes on the tower base 45, work in conjunction with the rubber seat 43 and stud C42, offering multiple advantages. From an installation perspective, the corresponding mounting holes facilitate quick positioning and installation of components, improving construction efficiency. The slots 451 engage with the outside of the rubber seat 43, further enhancing the connection's stability and preventing displacement of components during vibration. This also protects the rubber seat 43 from excessive wear, similar to the positioning and protection of critical components using slots in some equipment. The stud C42 passes sequentially through the annular gasket 44 and tower base 45 and is screwed into the nut for fixation. This fastening method forms a reliable mechanical connection, ensuring that all components remain tightly connected and maintain structural integrity under long-term complex operating conditions. Example

[0029] Based on Example 1, such as Figure 19 , Figure 20 and Figure 21 As shown: The underwater double-layer nested pile foundation mechanism 200 includes a pile foundation platform 21, a central pile foundation 22, an edge pile foundation 23, an outer reinforcing frame 24, and an inner reinforcing frame 25. The bottom of the edge pile foundation 23 is inclined away from the pile foundation platform 21, and an outer reinforcing frame 24 is fixedly installed on its outer ring surface. Adjacent sets of edge pile foundations 23 are fixed together by the outer reinforcing frame 24, and the outer reinforcing frame 24 is composed of five sets of parallel horizontal bars and one set of vertical pipes.

[0030] like Figure 19 , Figure 20 and Figure 21As shown: the five sets of edge pile foundations 23 have a centrally symmetrical structure, and their tops are fixed to pile foundation platforms 21, while their inner sides are fixed to inner reinforcing frames 25; the end of the inner reinforcing frame 25 away from the edge pile foundations 23 is fixedly connected to the outer ring surface of the central pile foundation 22, and five sets of inner reinforcing frames 25 are equidistantly arranged on the outer ring surface of the central pile foundation 22; the central pile foundation 22 is fixedly connected to the five sets of edge pile foundations 23 through the five sets of inner reinforcing frames 25 on the outside.

[0031] like Figure 20 and Figure 21 As shown: The structure of the central pile foundation 22 is the same as that of the edge pile foundation 23, and the top of the central pile foundation 22 is fixedly connected to the pile foundation platform 21. The central pile foundation 22 includes an outer pile foundation cylinder 221, an inner pile foundation rod 222, a tip 223, and an auxiliary welded sealing plug 224. The outer pile foundation cylinder 221 is fixedly connected to the bottom of the pile foundation platform 21, and the inner pile foundation rod 222 is inserted inside it. One end of the inner pile foundation rod 222 is fixedly provided with a conical tip 223, and the other end is welded with a cylindrical auxiliary welded sealing plug 224. A filling space is formed between the inner pile foundation rod 222 and the outer pile foundation cylinder 221. The inner pile foundation rod 222 passes through the interior of the outer pile foundation cylinder 221, and the auxiliary welded sealing plug 224 at its top is welded and fixed to the upper side of the interior of the outer pile foundation cylinder 221.

[0032] In practical use, a hydraulic pile driver is first used to deeply insert the bottoms of five sets of edge piles 23 and one set of central piles 22 into the seabed in shallow water. At this time, the pile base 21 is welded to the tops of the edge piles 23 and the central piles 22. Simultaneously, the inner pile rod 222 is inserted into the interior of the central pile 22. The inner pile rod 222 is then driven into the seabed using a hydraulic pile driver, causing it to re-insert into the seabed through its bottom tip 223, achieving stable double-layer insertion. The inner pile rod 222 is inserted into the interior of each of the five sets of edge piles 23. The space between the inner pile rod 222 and the pile can be filled and fixed with filler material. After the bottom of the inner pile rod 222 is inserted into the seabed, its end… The auxiliary welding sealing plug 224 can be welded to the end of the pile foundation for fixation; by deeply inserting the central pile foundation 22, five sets of edge pile foundations 23, and the internal inner pile foundation rods 222 into the seabed, a pile group foundation is formed; this effectively increases the contact area between the structure and the seabed, thereby providing vertical bearing capacity to support the huge weight of the entire wind turbine tower 500, improving the ability to resist horizontal loads, such as resisting the overturning moment caused by wind and waves, and effectively improving overall stability; the significant strengthening and toughening effect is achieved by driving the inner pile foundation rods 222 again into the central pile foundation 22 and the edge pile foundations 23, which is equivalent to adding a skeleton to the main pile foundation; the double-layer nested plug structure greatly enhances the stiffness and bending resistance of a single pile foundation. This allows it to more effectively resist deformation caused by long-term loads such as ocean currents and soil creep, making the overall structure more robust and durable, and improving its seismic and fatigue resistance. The space between the central pile foundation 22, the edge pile foundation 23, and the internal inner pile rod 222 is fixed with a filling material, which typically means injecting high-strength grout. This filling layer not only transmits loads but also acts as a damping buffer, effectively absorbing and dissipating the energy of vibrations and seismic waves transmitted from the superstructure, protecting the pile foundation from fatigue damage. Precise leveling and stress distribution are achieved by first welding the pile platform 21 to the top of all piles, forming a unified, high-rigidity load-bearing platform. This platform ensures... With the collaborative work of the pile foundations, the upper load is evenly distributed, avoiding settlement differences caused by uneven stress on individual pile foundations, and providing an absolutely level reference surface for the installation of the upper foundation platform 100; the auxiliary welded sealing plug 224 at the bottom of the inner pile foundation rod 222 is welded and fixed to the end of the pile foundation, playing a key role in sealing the pile bottom; it can effectively prevent seawater and silt from entering the internal cavity of the pile foundation, greatly reducing the risk of corrosion from the inside, and significantly extending the service life of the pile foundation in harsh marine environments; the advantage of the underwater double-layer nested pile foundation mechanism 200 is that it constructs a composite foundation system with deep anchoring, rigidity and flexibility, and collaborative stress through the combination of the central pile foundation 22, the edge pile foundation 23 and the inner pile foundation rod 222;Its pile group layout, double-layer nesting, grouting filling and bottom sealing design together give it unparalleled bearing capacity, stability, durability and vibration resistance, meeting the stringent requirements of offshore wind turbines for foundation structures; The bottom of the edge pile foundation 23 slopes away from the pile platform 21, which is the core design of the jacket foundation. The inclined pile foundation effectively decomposes the horizontal load from the upper wind turbine tower 500, such as the impact force of wind and waves, into axial pressure and tension of the pile foundation, which is borne by the pile material and the surrounding soil. Compared with using all vertical piles, this greatly improves the ability of the entire foundation to resist horizontal forces and overturning moments, ensuring the stability of the wind turbine in harsh sea conditions. It has strong integrity and structural rigidity, and all the independent pile foundations are welded into a solid integral space frame by the outer reinforcing frame 24 and the inner reinforcing frame 25. The frame structure connects individual piles into a unified whole that shares the load. Loads on any part can be quickly transferred to other piles and the entire structure through the reinforcing frame, avoiding stress concentration and significantly enhancing the structural rigidity and integrity of the entire underwater double-layer nested pile foundation mechanism 200. The five sets of edge piles 23 are centrally symmetrical and are fixedly connected to the central pile 22 via the inner reinforcing frame 25. The radial and symmetrical mechanical design creates an extremely efficient and uniform load transfer path. The enormous pressure and bending moment from the upper pile platform 21 can be evenly distributed through this rigid frame along the shortest and most direct path. All piles are driven into the seabed to maximize the bearing capacity of the pile group foundation. The outer reinforcing frame 24 consists of five sets of parallel horizontal bars and one set of vertical tubes, forming a robust spatial truss. The truss structure can effectively resist structural deformation and vibration under complex wave cyclic loads, reduce the stress amplitude at the pile root, thereby significantly improving the fatigue resistance of the entire foundation structure and extending its service life. The pile platform 21 provides a common and robust top connection platform and construction benchmark for all piles. The process of first driving the piles into place and then uniformly welding the pile platform 21 allows each pile to be driven into place. The design incorporates a certain degree of adjustment tolerance to facilitate construction. Simultaneously, the multi-pile plus spatial frame design provides structural redundancy, ensuring the overall safety of the system even in the event of a very small probability of localized damage, as the load can be redistributed through other paths. By arranging the edge piles 23 at an angle and rigidly connecting them to the central pile 22 using outer and inner reinforcing frames 24 and 25, forming a centrally symmetrical spatial frame, and finally securing the top with the pile platform 21, this design optimizes force transmission and maximizes structural stiffness and stability. It represents a mature, reliable, and efficient foundation solution for coping with harsh marine environments.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A foundation structure for an offshore wind turbine with vibration reduction function, comprising a foundation platform (100), wherein an underwater double-layer nested pile foundation mechanism (200) is fixedly installed at the bottom of the foundation platform (100), and a floating bearing mechanism (300) is fixedly installed on its surface; characterized in that: A floating vibration damping mechanism (400) is installed above the floating bearing mechanism (300), and a wind turbine tower (500) is fixedly connected to the upper side of the floating vibration damping mechanism (400); the bottom of the wind turbine tower (500) is erected on the foundation platform (100) through the floating vibration damping mechanism (400) and the floating bearing mechanism (300), and a tower base (45) is fixedly installed at its bottom, while multiple sets of perforations are equally spaced on the annular surface of the tower base (45); a pile base (21) is fixed at the top of the underwater double-layer nested pile foundation mechanism (200), and a central pile foundation (22) is set at the center of its bottom, while five sets of edge pile foundations (23) are equally spaced on the outer side of its bottom.

2. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 1, characterized in that: The underwater double-layer nested pile foundation mechanism (200) includes a pile foundation platform (21), a central pile foundation (22), an edge pile foundation (23), an outer reinforcing frame (24), and an inner reinforcing frame (25). The bottom of the edge pile foundation (23) is inclined away from the pile foundation platform (21), and an outer reinforcing frame (24) is fixedly installed on its outer ring surface. The two adjacent sets of edge pile foundations (23) are fixed together by the outer reinforcing frame (24), and the outer reinforcing frame (24) consists of five sets of parallel horizontal bars and one set of vertical pipes.

3. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 2, characterized in that: The five sets of edge pile foundations (23) have a centrally symmetrical structure, and the top of the pile foundation platform (21) is fixedly connected to the pile foundation platform (21), while the inner side is fixedly connected to the inner side reinforcement frame (25); the end of the inner side reinforcement frame (25) away from the edge pile foundation (23) is fixedly connected to the outer ring surface of the central pile foundation (22), and five sets of inner side reinforcement frames (25) are equidistantly arranged on the outer ring surface of the central pile foundation (22); the central pile foundation (22) is fixedly connected to the five sets of edge pile foundations (23) respectively through the five sets of inner side reinforcement frames (25) on the outside.

4. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 3, characterized in that: The central pile foundation (22) has the same structure as the edge pile foundation (23), and its top is fixed to the pile foundation platform (21). The central pile foundation (22) includes an outer pile foundation cylinder (221), an inner pile foundation rod (222), a tip (223), and an auxiliary welded sealing plug (224). The outer pile foundation cylinder (221) is fixed to the bottom of the pile foundation platform (21), and the inner pile foundation rod (222) is inserted inside it. One end of the inner pile foundation rod (222) is fixedly provided with a conical tip (223), and the other end is welded with a cylindrical auxiliary welded sealing plug (224). A filling space is formed between the inner pile foundation rod (222) and the outer pile foundation cylinder (221). The inner pile foundation rod (222) passes through the interior of the outer pile foundation cylinder (221), and the auxiliary welded sealing plug (224) at its top is welded and fixed to the upper side of the interior of the outer pile foundation cylinder (221).

5. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 1, characterized in that: The floating bearing mechanism (300) includes a base (31), a stabilizing platform (32), an L-shaped frame (33), a pad (34), a stud A (35), a central platform (36), a reinforcing seat (37), a bearing platform (38), and a stud B (39). The base (31) is circular, and multiple sets of perforations are equidistantly opened on its outer surface. A stud A (35) is inserted inside the perforations. The stud A (35) passes through the perforations and is fixed by a nut. Its bottom is fixedly connected to the pile foundation platform (21). A central pile foundation (22) is fixedly installed in the middle of the base (31). Multiple sets of L-shaped frames (33) are equidistantly fixed on the outer ring surface of the central pile foundation (22), and a central platform (36) is fixedly connected to its top. The central platform (36) is hexagonal, and a reinforcing seat (37) is fixedly installed on each of its six sides. The bottom of the reinforcing seat (37) is fixedly connected to the stabilizing platform (32). The pad (34) has multiple sets of round holes that are equidistant from the stud A (35) and eight sets of quick-connect seats (341) are equidistant from the bottom. The base (31) has eight sets of quick-connect grooves (342) equidistant from the surface. The quick-connect grooves (342) are equidistant from the quick-connect seats (341) and the quick-connect seats (341) are inserted into the quick-connect grooves (342). The pad (34) is annular and covers the surface of the base (31) and is fixed by stud A (35) and nuts.

6. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 5, characterized in that: The support platform (38) is configured as six groups that are fixedly connected to the six sides of the central platform (36), and a circular locking cover (393) is screwed to its surface. At the same time, a spherical buffer groove is opened inside it. The bottom of the stud B (39) is fixedly connected to the adapter ball (391), and the size of the adapter ball (391) is adapted to the buffer groove. The outer side of the adapter ball (391) is fixedly connected to the rubber pad (392), and it is movably connected to the buffer groove through the outer rubber pad (392).

7. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 6, characterized in that: The central platform (36) includes a damping space (361), a docking groove (362), a damping core sleeve (363), a docking strip (364), a damping column (365), a stabilizing hole (366), and a stabilizing column (367). The damping space (361) is located inside the central platform (36), and six sets of stabilizing columns (367) are fixedly connected at equal intervals at its internal corners. At the same time, a damping core sleeve (363) is inserted inside it. Six sets of docking strips (364) are fixedly connected at the outer corners of the damping core sleeve (363), and damping columns (365) are arranged at equal intervals on its inner side. A stabilizing hole (366) is opened inside the damping column (365), and the size of the stabilizing hole (366) is adapted to the stabilizing column (367). At the same time, the six sets of stabilizing columns (367) are respectively inserted into the stabilizing holes (366) opened inside the six sets of damping columns (365). The inner side of the central platform (36) is also provided with multiple sets of docking slots (362) at equal intervals, and the docking slots (362) are adapted to the size of the docking strips (364). At the same time, the docking strips (364) are inserted into the inside of the docking slots (362). Both the docking slots (362) and the docking strips (364) are dovetail-shaped. The damping core sleeve (363) is positioned and installed inside the damping space (361) through multiple sets of quick-connect slots (342) and docking strips (364). A damping channel is formed between two adjacent sets of damping columns (365), and a seat (481) is inserted inside the damping channel. At the same time, a floating vibration damping mechanism (400) is installed above it.

8. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 7, characterized in that: The floating vibration damping mechanism (400) includes a plate (41), a stud C (42), a rubber seat (43), an annular gasket (44), a tower base (45), a slot (451), a pressure table (46), a docking seat (47), and a core floating platform (48). The pressure table (46) is fixedly connected to the core floating platform (48) inside, and the plate (41) is fixedly connected to its surface. Six sets of seats (481) are fixedly fixed at equal intervals on the outer side of the core floating platform (48). The core floating platform (48) is a columnar structure made of metal. The outer side of the core floating platform (48) is elastically connected to the central platform (36) through a damping core sleeve (363).

9. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 8, characterized in that: The bottom of the pressure table (46) is equidistantly equipped with six sets of docking seats (47), and the docking seats (47) are provided with through holes. At the same time, studs B (39) are inserted into the through holes. The studs B (39) pass through the circular docking seats (47) and are fixedly connected by nuts.

10. The foundation structure of an offshore wind turbine with vibration reduction function according to claim 9, characterized in that: The pressure platform (46) and its circular interface plate (41) are concentric. Multiple sets of studs C (42) are installed at equal intervals on the outer side of the interface plate (41). At the same time, cylindrical rubber seats (43) are fixed to the bottom of each stud C (42). Multiple sets of mounting holes are opened at equal intervals on the annular gasket (44) and the tower base (45). The mounting holes on the tower base (45) are provided with slots (451) at the bottom. The slots (451) are engaged with the outer side of the rubber seat (43). At the same time, the studs C (42) pass through the annular gasket (44) and the tower base (45) in sequence and are screwed and fixed with nuts.

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