Method for assembling an offshore floating wind platform and offshore floating wind platform

Abstract

The present disclosure relates to an offshore floating wind power platform assembly method and offshore floating wind power platform, which are used to solve the technical problem of low efficiency of offshore floating wind power platform assembly. The offshore floating wind power platform assembly method comprises the following steps: surrounding four connection sub-units around the bottom of the outer circumferential surface of a wind turbine tower foundation and positioning the four connection sub-units relative to each other through a first positioning structure; extending four horizontal main beams along the radial direction of a middle core connecting module and arranging the four horizontal main beams around the central axis of the wind turbine tower foundation at intervals, and positioning the end portions of the four horizontal main beams relative to each other through a second positioning structure; placing a buoyancy sub-unit in the space surrounded by two adjacent horizontal main beams and the middle core connecting module, and positioning the buoyancy sub-unit relative to each other through a third positioning structure; connecting a cable-stayed beam between the horizontal main beam and the wind turbine tower foundation, and positioning the cable-stayed beam relative to each other through a fourth positioning structure; and pouring concrete into the annular sandwich structure, the connection sub-units, the horizontal main beams and the cable-stayed beam, so that the concrete flows into each positioning structure.

Description

Technical Field

[0001] This disclosure relates to the field of offshore floating wind power platform technology, specifically to an assembly method for an offshore floating wind power platform and an offshore floating wind power platform. Background Technology

[0002] Floating wind turbine platforms mainly use the platform's own buoyancy and stability to counteract the thrust transmitted by the wind turbine and the inertial force of the environment. They are generally divided into four main types: single-column (Spar), barge, semi-submersible platform (Semi), and tension leg platform (TLP).

[0003] Tension Leg Platforms (TLPs) have significant potential for widespread adoption in medium water depths (approximately 60m-150m). Compared to other floating concepts, TLPs do not require the deep draft of monopole platforms or the large-area distributed mooring systems of semi-submersible platforms. Their vertically tensioned mooring system requires less sea area. The TLP platform itself exhibits minimal heave, roll, and pitch motion, providing safer and more reliable operation for the wind turbine and effectively increasing power generation. In terms of platform and mooring, vertical mooring significantly reduces the amount of mooring cables used, resulting in a simpler structure with far less steel consumption than semi-submersible platforms, and easier fabrication and construction. Therefore, TLP platforms have the potential for significant cost reduction compared to semi-submersible platforms and have broad application prospects.

[0004] In related technologies, the manufacturing of offshore floating wind power platforms requires ultra-large specialized processing plants such as shipyards and docks, making industrial production quite difficult. Furthermore, welding is usually used between the various sections during the assembly process, which requires high precision in the processing of each section. If the processing deviation is too large, it will bring great difficulties to the assembly and result in low assembly efficiency. Summary of the Invention

[0005] The purpose of this disclosure is to provide an assembly method for an offshore floating wind power platform and an offshore floating wind power platform, so as to solve the technical problem of low assembly efficiency of offshore floating wind power platforms.

[0006] To achieve the above objectives, this disclosure provides an assembly method for an offshore floating wind power platform. The offshore floating wind power platform includes: a wind turbine tower foundation, wherein an annular sandwich structure for pouring concrete is provided; a central core connection module, for fitting onto the bottom of the wind turbine tower foundation, the central core connection module being assembled from four connection sub-units, each connection sub-unit having a pouring cavity for pouring concrete; four horizontal main beams, one end of each horizontal main beam having a mooring fixing component, each horizontal main beam having a pouring cavity for pouring concrete; a steel buoyancy chamber, including four buoyancy sub-units and two inclined tie beams, both ends of each inclined tie beam having pouring cavities for pouring concrete; the assembly method of the offshore floating wind power platform includes the following steps: surrounding the bottom of the outer circumference of the wind turbine tower foundation with the four connection sub-units, such that the connection sub-units are positioned relative to the outer circumference of the wind turbine tower foundation via a first positioning structure; and such that the horizontal main beams are positioned along the central core connection module. The modules extend radially and are spaced around the central axis of the wind turbine tower foundation, with the other ends of the four horizontal main beams respectively positioned relative to the central core connection module via a second positioning structure. The buoyancy sub-units are placed in the space formed by two adjacent horizontal main beams and the central core connection module, with the buoyancy sub-units positioned relative to the central core connection module and the horizontal main beams via a third positioning structure. The inclined tie beams are connected between the top surface of the horizontal main beams and the outer circumference of the wind turbine tower foundation, with the ends of the inclined tie beams positioned relative to the horizontal main beams and the wind turbine tower foundation via a fourth positioning structure, and the two inclined tie beams are symmetrical about the central axis of the wind turbine tower foundation. Concrete is poured into the annular sandwich structure, the connection sub-units, the horizontal main beams, and the inclined tie beams, allowing the concrete to flow into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure.

[0007] Optionally, the first positioning structure includes: a first through hole disposed on the outer peripheral surface of the wind turbine tower foundation, the first through hole being in fluid communication with the annular sandwich structure; a first shear key disposed around the first through hole; a first insertion hole disposed on the connecting sub-unit and in fluid communication with the casting cavity of the connecting sub-unit; and a first fastening hole, the outer peripheral surface of the wind turbine tower foundation and the connecting sub-unit correspondingly provided with the first fastening hole; the step of surrounding the bottom of the outer peripheral surface of the wind turbine tower foundation with the four connecting sub-units, so that the connecting sub-units are positioned relative to the outer peripheral surface of the wind turbine tower foundation through the first positioning structure includes: inserting the first shear key into the first insertion hole; passing fasteners through the first fastening holes on the wind turbine tower foundation and the connecting sub-units, so that the wind turbine tower foundation and the connecting sub-units are fastened together.

[0008] Optionally, the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete into the annular sandwich structure and the connecting subunit, so that the concrete enters the first through hole through the annular sandwich structure to fill the first shear key, so that the concrete enters the first insertion hole through the pouring cavity of the connecting subunit to wrap the first shear key, and so that the concrete wraps the fasteners that enter the pouring cavity of the connecting subunit and the annular sandwich structure.

[0009] Optionally, the second positioning structure includes: a first splicing flange disposed on the end face of the horizontal main beam facing the central core connecting module; a second splicing flange disposed on the side wall of the central core connecting module; a second through hole disposed on one of the first splicing flange and the second splicing flange, the second through hole being in fluid communication with the corresponding casting cavity; a second shear key disposed around the second through hole; and a second insertion hole disposed on the other of the first splicing flange and the second splicing flange. The step of causing the horizontal main beam to extend radially along the central core connecting module and be spaced apart around the central axis of the wind turbine tower foundation, such that the other ends of the four horizontal main beams are respectively positioned relative to the central core connecting module through the second positioning structure, includes: inserting the second shear key into the second insertion hole; splicing the second splicing flange with the first splicing flange, and fastening the second splicing flange with the first splicing flange using fasteners.

[0010] Optionally, the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete into the connecting subunit and the horizontal main beam, so that the concrete enters the second through hole through the pouring cavity of one of the connecting subunit and the horizontal main beam to fill the second shear key, so that the concrete enters the second insertion hole through the pouring cavity of the other of the connecting subunit and the horizontal main beam to wrap the portion of the second shear key inserted into the second insertion hole, and so that the concrete wraps the fasteners entering the pouring cavities of the connecting subunit and the horizontal main beam.

[0011] Optionally, the top of the first splicing flange and / or the second splicing flange is provided with a first pouring notch for pouring concrete; the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the inclined tie beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete between the first splicing flange and the second splicing flange through the first pouring notch, so that the concrete covers the portion of the second shear key and the fastener located between the first splicing flange and the second splicing flange.

[0012] Optionally, the third positioning structure includes: an anchor plate disposed on the side wall of the buoyancy subunit, and an anchor plate mounting hole disposed on the side wall of the horizontal main beam and the side wall of the central core connecting module, wherein the anchor plate mounting hole is in fluid communication with the corresponding casting cavity; the step of placing the buoyancy subunit in the space formed by the two adjacent horizontal main beams and the central core connecting module, and such that the buoyancy subunit is relatively positioned relative to the central core connecting module and the horizontal main beam through the third positioning structure, includes: inserting the anchor plate into the anchor plate mounting hole.

[0013] Optionally, the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable tie beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete into the connecting subunit and the horizontal main beam, so that the concrete enters the anchor plate mounting hole through the pouring cavity of the connecting subunit and the horizontal main beam to cover the portion of the anchor plate inserted into the anchor plate mounting hole.

[0014] Optionally, the fourth positioning structure includes: a diagonal beam connector, configured as a groove-shaped structure with openings at the top and ends; a first inverted tooth disposed on the inner sidewall of the diagonal beam connector; and a second inverted tooth disposed on the outer wall of the diagonal beam. The step of connecting the diagonal beam between the top surface of the horizontal main beam and the outer peripheral surface of the wind turbine tower foundation, such that the ends of the diagonal beam are relatively positioned relative to the horizontal main beam and the wind turbine tower foundation respectively through the fourth positioning structure, and making the two diagonal beams symmetrical about the central axis of the wind turbine tower foundation, includes: fixing one end of the diagonal beam connector to the top surface of the horizontal main beam or the outer peripheral surface of the wind turbine tower foundation; allowing the diagonal beam to be inserted into the diagonal beam connector through the top opening of the diagonal beam connector, with the side of the second inverted tooth abutting against the side of the first inverted tooth.

[0015] Optionally, the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable tie beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete into the annular sandwich structure, the horizontal main beam, and the cable tie beam, so that the concrete flows between the cable tie beam connector and the cable tie beam to wrap the first inverted tooth and the second inverted tooth.

[0016] Optionally, the fourth positioning structure further includes: a fourth through hole, disposed on the top surface of the horizontal main beam corresponding to the end face of the inclined beam, the fourth through hole being in fluid communication with the casting cavity of the horizontal main beam; and a fourth shear key, disposed around the fourth through hole; the step of connecting the inclined beam between the top surface of the horizontal main beam and the outer peripheral surface of the wind turbine tower foundation, such that the ends of the inclined beam are relatively positioned relative to the horizontal main beam and the wind turbine tower foundation respectively through the fourth positioning structure, and such that the two inclined beams are symmetrical about the central axis of the wind turbine tower foundation, further includes: inserting the fourth shear key into the end face of the inclined beam, such that the fourth shear key enters the casting cavity of the inclined beam.

[0017] Optionally, the step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable tie beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: pouring concrete into the annular sandwich structure, the horizontal main beam, and the cable tie beam, so that the concrete flows into the fourth through hole through the pouring cavity of the horizontal main beam and the annular sandwich structure to fill the fourth shear key, so that the concrete encapsulates the fourth shear key that enters the pouring cavity of the cable tie beam.

[0018] Optionally, the horizontal main beam includes: a first main beam unit, the mooring fastener being disposed at one end of the first main beam unit opposite to the central core connecting module, and a second main beam unit for connecting the first main beam unit and the central core connecting module; the assembly method of the offshore floating wind power platform further includes the following steps: positioning the first main beam unit relative to the second main beam unit through a fifth positioning structure; pouring concrete into the first main beam unit and the second main beam unit, so that the concrete flows into the fifth positioning structure.

[0019] Optionally, the fifth positioning structure includes: a third splicing flange disposed on the end face of the first main beam unit facing the second main beam unit; a fourth splicing flange disposed on the end face of the second main beam unit facing the first main beam unit; a fifth through hole disposed on one of the third and fourth splicing flanges, the fifth through hole being in fluid communication with a corresponding casting cavity; a fifth shear key disposed around the fifth through hole; and a fifth insertion hole disposed on the other of the third and fourth splicing flanges. The step of positioning the first main beam unit relative to the second main beam unit through the fifth positioning structure includes: inserting the fifth shear key into the fifth insertion hole; splicing the third and fourth splicing flanges together, and fastening the third and fourth splicing flanges together with fasteners.

[0020] Optionally, the step of pouring concrete into the first main beam unit and the second main beam unit, so that the concrete flows into the fifth positioning structure, includes: pouring concrete into the first main beam unit and the second main beam unit, so that the concrete enters the fifth through hole through the pouring cavity of one of the first main beam unit and the second main beam unit to fill the fifth shear key, so that the concrete enters the fifth insertion hole through the pouring cavity of the other of the first main beam unit and the second main beam unit to wrap the portion of the fifth shear key inserted into the fifth insertion hole, and so that the concrete wraps the fasteners entering the pouring cavities of the first main beam unit and the second main beam unit.

[0021] Optionally, the top of the third splicing flange and / or the fourth splicing flange is provided with a second pouring notch for pouring concrete; the step of pouring concrete into the first main beam unit and the second main beam unit so that the concrete flows into the fifth positioning structure includes: pouring concrete between the third splicing flange and the fourth splicing flange through the second pouring notch so that the concrete covers the portion of the fifth shear key and the fastener located between the third splicing flange and the fourth splicing flange.

[0022] Based on the above technical solutions, this disclosure also provides an offshore floating wind power platform, which is assembled using the assembly method of the offshore floating wind power platform in the above technical solutions.

[0023] The assembly method for offshore floating wind power platforms provided in this disclosure, during the overall assembly process, involves pouring concrete into connecting sub-units, wind turbine tower foundations, horizontal main beams, and cable-stayed beams. This fully leverages the tensile strength, compressive strength, and corrosion resistance of steel plates and concrete, addressing the current issues of poor compressive stability in steel structures and poor axial tension or small eccentric tension performance in concrete structures. Furthermore, the concrete flows through the annular sandwich structure and each pouring cavity into the respective positioning structures, utilizing the adhesive effect of the concrete to quickly complete the connection and assembly of each part. This effectively avoids increased assembly steps due to processing deviations in each part, and eliminates the need for secondary anti-corrosion treatment after assembly, thereby simplifying the assembly process and improving assembly efficiency. The offshore floating wind power platform provided in this disclosure has the same technical effect as the assembly method of the offshore floating wind power platform in the above-mentioned technical solution. To avoid unnecessary repetition, it will not be elaborated here. In addition, in the offshore floating wind power platform provided in this disclosure, by modularizing the large central core connection module and the steel buoyancy chamber, these two are divided into multiple connection sub-units and multiple buoyancy sub-units, so that the size and weight of each sub-unit do not exceed the size and weight of the wind turbine. Since the wind turbine can be delivered by road transport, the connection sub-units, buoyancy sub-units, wind turbine tower foundations, horizontal main beams and cable-stayed beams can also be delivered by road transport. This greatly reduces the requirement for using dedicated sites and facilities. In addition, through the modular standardized design, the various parts of the offshore floating wind power platform can be processed and constructed at different locations, and then transported to the assembly site for final assembly, which greatly improves the construction speed of each part and effectively shortens the construction period.

[0024] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of the assembly method of the offshore floating wind power platform in a specific embodiment of this disclosure; Figure 2 This is a front view of the offshore floating wind power platform according to a specific embodiment of this disclosure; Figure 3This is a top view of an offshore floating wind power platform according to a specific embodiment of this disclosure; Figure 4 This is an assembly perspective view of the wind turbine tower foundation and the central core connection module in a specific embodiment of this disclosure; Figure 5 This is an isometric perspective view of the wind turbine tower foundation in a specific embodiment of this disclosure; Figure 6 This is a structural schematic diagram of the connecting subunit of the central core connecting module in a specific embodiment of this disclosure from one angle; Figure 7 This is a structural schematic diagram of the connecting subunit of the central core connecting module in a specific embodiment of this disclosure from another angle; Figure 8 This is a front view of the horizontal main beam in a specific embodiment of this disclosure; Figure 9 This is a top view of the horizontal main beam in a specific embodiment of this disclosure; Figure 10 This is a front view of the first splicing flange in a specific embodiment of this disclosure; Figure 11 This is an assembly diagram of the second positioning structure in a specific embodiment of this disclosure; Figure 12 This is an isometric view of the third splicing flange in a specific embodiment of this disclosure; Figure 13 This is a front view of the fourth splicing flange in a specific embodiment of this disclosure; Figure 14 This is an assembly diagram of the fifth positioning structure in a specific embodiment of this disclosure; Figure 15 This is a structural schematic diagram of the buoyancy subunit of the steel buoyancy chamber in a specific embodiment of this disclosure; Figure 16 This is a front view of the cable-stayed beam in a specific embodiment of this disclosure; Figure 17 This is a top view of the cable-stayed beam in a specific embodiment of this disclosure; Figure 18 This is a front perspective view of the assembly of the cable-stayed beam and the cable-stayed beam connector in a specific embodiment of this disclosure; Figure 19 This is a top perspective view of the assembly of the cable-stayed beam and the cable-stayed beam connector in a specific embodiment of this disclosure.

[0026] Explanation of reference numerals in the attached figures 1-Wind turbine tower foundation, 10-Annular sandwich structure, 2-Central core connection module, 20-Connection subunit, 3-Horizontal main beam, 31-First main beam element, 32-Second main beam element, 33-Stud, 4-Steel buoyancy chamber, 40-Buoyancy sub-unit, 5-Cable-stayed beam, 6-Mooring fasteners, 100 - First positioning structure, 101 - First through hole, 102 - First shear key, 103 - First insertion hole, 104 - First fastening hole 200 - Second positioning structure; 201 - First splicing flange; 202 - Second splicing flange; 203 - Second through hole; 204 - Second shear key; 205 - Second insertion hole; 206 - First casting notch. 300 - Third positioning structure, 301 - Anchor plate, 302 - Anchor plate mounting hole. 400 - Fourth positioning structure, 401 - Cable tie beam connector, 402 - First countertooth, 403 - Second countertooth, 404 - Fourth through hole, 405 - Fourth shear key. 500 - Fifth positioning structure, 501 - Third splicing flange, 502 - Fourth splicing flange, 503 - Fifth through hole, 504 - Fifth shear key, 505 - Fifth insertion hole, 506 - Second casting notch. Detailed Implementation

[0027] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0028] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of an offshore floating wind power platform in its normal operating state. Figure 2 In the drawing orientation, "inner" and "outer" refer to the inner and outer sides relative to the contour of the corresponding component itself. The terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not indicate sequence or importance. Furthermore, when the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] According to specific embodiments of this disclosure, an assembly method for an offshore floating wind power platform is provided for assembly. Figures 2 to 19 The offshore floating wind power platform shown includes a wind turbine tower foundation 1, a central core connection module 2, four horizontal main beams 3, a steel buoyancy chamber 4, a cable-stayed beam 5, and mooring fixtures 6. The wind turbine tower foundation 1 contains an annular sandwich structure 10 for pouring concrete, and concrete pouring holes communicating with this annular sandwich structure 10 are provided on the outer circumference of the wind turbine tower foundation 1.

[0030] The central core connection module 2 is used to be fitted onto the bottom of the wind turbine tower foundation 1. The central core connection module 2 is composed of four connection sub-units 20 spliced ​​together. Each connection sub-unit 20 is provided with a pouring cavity for pouring concrete. A concrete pouring hole that is fluidly connected to the pouring cavity can be provided on the top surface of the connection sub-unit 20.

[0031] One end of the horizontal main beam 3 may be provided with a mooring fastener 6. The horizontal main beam 3 may be provided with a pouring cavity for pouring concrete. Multiple studs 33 may be provided in the pouring cavity to enhance the bonding between the horizontal main beam 3 and the concrete. A concrete pouring hole that is in fluid communication with the pouring cavity may be provided on the top surface of the horizontal main beam 3.

[0032] The steel buoyancy chamber 4 may include four buoyancy sub-units 40.

[0033] Both ends of the cable-stayed beam 5 may be provided with pouring cavities for pouring concrete, and the top surface of the cable-stayed beam 5 may be provided with concrete pouring holes that are in fluid communication with the pouring cavities.

[0034] refer to Figure 1 As shown, the assembly method of an offshore floating wind power platform may include the following steps: S1: Four connecting sub-units 20 are arranged around the bottom of the outer periphery of the wind turbine tower foundation 1, so that the connecting sub-units 20 are positioned relative to the outer periphery of the wind turbine tower foundation 1 through the first positioning structure 100. S2: The horizontal main beams 3 extend radially along the central core connection module 2 and are arranged at intervals around the central axis of the wind turbine tower foundation 1, and the other ends of the four horizontal main beams 3 are respectively positioned relative to the central core connection module 2 through the second positioning structure 200. S3: Place the buoyancy sub-unit 40 in the space formed by the two adjacent horizontal main beams 3 and the central core connection module 2, and position the buoyancy sub-unit 40 relative to the central core connection module 2 and the horizontal main beams 3 respectively through the third positioning structure 300; S4: Connect the inclined tie beam 5 between the top surface of the horizontal main beam 3 and the outer peripheral surface of the wind turbine tower foundation 1, so that the ends of the inclined tie beam 5 are positioned relative to the horizontal main beam 3 and the wind turbine tower foundation 1 respectively through the fourth positioning structure 400, and make the two inclined tie beams 5 symmetrical about the central axis of the wind turbine tower foundation 1. S5: Pour concrete into the annular sandwich structure 10, connecting sub-unit 20, horizontal main beam 3 and inclined tie beam 5, so that the concrete flows into the first positioning structure 100, the second positioning structure 200, the third positioning structure 300 and the fourth positioning structure 400.

[0035] The assembly method for offshore floating wind power platforms provided in this disclosure allows for the full utilization of the tensile strength, compressive strength, and corrosion resistance of steel plates and concrete during the overall assembly process. This addresses the issues of poor compressive stability of steel structures and poor axial tension or small eccentric tension performance of concrete structures. Furthermore, the concrete flows through the annular sandwich structure 10 and each pouring cavity into the respective positioning structures, enabling rapid connection and assembly of each part using the adhesive effect of the concrete. This effectively avoids increased assembly steps due to processing deviations and eliminates the need for secondary anti-corrosion treatment after assembly, thus simplifying the assembly process and improving efficiency.

[0036] The central core connection module 2 is constructed to be coaxially aligned with the wind turbine tower foundation 1. As one specific implementation method, refer to... Figure 3 As shown, the central core connecting module 2 can be constructed as a rectangular structure spliced ​​together by four connecting sub-units 20. Correspondingly, in step S2, the four horizontal main beams 3 can extend along the diagonals of the central core connecting module 2 and connect with the corners of the central core connecting module 2. Through step S2, adjacent horizontal main beams 3 and the central core connecting module 2 form a trapezoidal space around each other. Therefore, the buoyancy sub-unit 40 is correspondingly constructed as a trapezoidal structure. As another specific embodiment, the central core connecting module 2 can also be constructed as a circular structure spliced ​​together by four connecting sub-units. This circular structure is coaxially arranged with the wind turbine tower foundation 1. Correspondingly, in step S2, the four horizontal main beams 3 can extend radially along the central core connecting module 2 and be arranged in an array around the central axis of the central core connecting module 2.

[0037] refer to Figures 4 to 6 As shown, the first positioning structure 100 may include a first through hole 101, a first shear key 102, a first insertion hole 103, and a first fastening hole 104. The first through hole 101 may be located at the bottom of the outer peripheral surface of the wind turbine tower foundation 1 and may be in fluid communication with the annular sandwich structure 10. The first shear key 102 may be arranged around the first through hole 101. The first insertion hole 103 may be located on the side wall of the connecting sub-unit 20 facing the outer peripheral surface of the wind turbine tower foundation 1 and may be in fluid communication with the casting cavity of the connecting sub-unit 20. A plurality of sets of first fastening holes 104 are correspondingly provided on the outer peripheral surface of the wind turbine tower foundation 1 and the connecting sub-unit 20.

[0038] Step S1 may include: S11: Insert the first shear key 102 into the first socket 103; S12: Pass the fastener through the first fastening hole 104 on the wind turbine tower foundation 1 and the connecting sub-unit 20 to securely connect the wind turbine tower foundation 1 and the connecting sub-unit 20.

[0039] Steps S11 and S12 enable the central core connection module 2 to be positioned and installed with the wind turbine tower foundation 1.

[0040] Accordingly, in order to inject concrete into the first positioning structure 100, step S5 may include: S51: Concrete is poured into the annular sandwich structure 10 and the connecting sub-unit 20, so that the concrete enters the first through hole 101 through the annular sandwich structure 10 to fill the first shear key 102, so that the concrete enters the first insertion hole 103 through the pouring cavity of the connecting sub-unit 20 to wrap the first shear key 102, and so that the concrete wraps the pouring cavity of the connecting sub-unit 20 and the fasteners of the annular sandwich structure 10.

[0041] Through step S51, the bonding effect of concrete can be used to achieve the bonding and fixing of the wind turbine tower foundation 1 and the connecting sub-unit 20, as well as the anti-corrosion wrapping of each connection part. The first shear key 102 can bear the shear force between the central core connecting module 2 and the wind turbine tower foundation 1. The first shear key 102 is poured into the concrete, and the concrete provides stability for the first shear key 102 during shear resistance.

[0042] refer to Figures 7 to 11 The second positioning structure 200 may include a first splicing flange 201, a second splicing flange 202, a second through hole 203, a second shear key 204, and a second insertion hole 205. The first splicing flange 201 may be disposed on the end face of the horizontal main beam 3 facing the central core connecting module 2. The second splicing flange 202 may be disposed on the side wall of the central core connecting module 2 facing the horizontal main beam 3. The second through hole 203 may be disposed on one of the first splicing flange 201 and the second splicing flange 202, and the second through hole 203 may be in fluid communication with the corresponding casting cavity. The second shear key 204 may be disposed around the second through hole 203. The second insertion hole 205 may be disposed on the other of the first splicing flange 201 and the second splicing flange 202. Alternatively, in a specific embodiment of this disclosure, refer to... Figure 7 As shown, the second through hole 203 and the second shear key 204 can be provided on the second splicing flange 202. The second through hole 203 can be in fluid communication with the casting cavity of the connecting subunit 20. The second insertion hole 205 can be provided on the first splicing flange 201. The second insertion hole 205 can be in fluid communication with the casting cavity of the horizontal main beam 3.

[0043] Step S2 may include: S21: Insert the second shear key 204 into the second socket 205; S22: Connect the second splicing flange 202 to the first splicing flange 201, and fasten the second splicing flange 202 to the first splicing flange 201 with fasteners.

[0044] Steps S21 and S22 enable the horizontal main beam 3 to be positioned and installed with the central core connection module 2.

[0045] Accordingly, in order to inject concrete into the second positioning structure 200, step S5 may include: S52: Concrete is poured into the connecting sub-unit 20 and the horizontal main beam 3, so that the concrete enters the second through hole 203 through the pouring cavity of one of the connecting sub-unit 20 and the horizontal main beam 3 to fill the second shear key 204, and the concrete enters the second insertion hole 205 through the pouring cavity of the other of the connecting sub-unit 20 and the horizontal main beam 3 to wrap the part of the second shear key 204 inserted into the second insertion hole 205, and the concrete wraps the fasteners that enter the pouring cavity of the connecting sub-unit 20 and the horizontal main beam 3.

[0046] Through step S52, the bonding effect of concrete can be used to achieve the bonding and fixing of the horizontal main beam 3 and the central core connection module 2, as well as the anti-corrosion wrapping of each connection part. The second shear key 204 can bear the shear force between the central core connection module 2 and the horizontal main beam 3. The second shear key 204 is poured into the concrete, and the concrete provides stability for the second shear key 204 during shear resistance.

[0047] Since there is a gap between the first splicing flange 201 and the second splicing flange 202 when they are spliced, a first pouring notch 206 for pouring concrete can be provided on the top of the first splicing flange 201 and / or the second splicing flange 202 to fill the gap.

[0048] Accordingly, step S5 may also include: S53: Concrete is poured between the first splicing flange 201 and the second splicing flange 202 through the first pouring notch 206, so that the concrete covers the portion of the second shear key 204 and the fastener located between the first splicing flange 201 and the second splicing flange 202.

[0049] Through step S53, the concrete can fill and bond the gap, and at the same time, it can wrap and protect the portion of the fastener located in the gap from corrosion.

[0050] refer to Figure 3 , Figure 7 , Figure 8 as well as Figure 15As shown, the third positioning structure 300 may include an anchor plate 301 and an anchor plate mounting hole 302. The anchor plate 301 may be disposed on the side wall of the buoyancy subunit 40 for connection with the horizontal main beam 3 and the central core connection module 2. The anchor plate mounting hole 302 may be disposed on the side wall of the horizontal main beam 3 and the side wall of the central core connection module 2. The anchor plate mounting hole 302 may be in fluid communication with the corresponding casting cavity. That is, the anchor plate mounting hole 302 on the horizontal main beam 3 may be in fluid communication with the casting cavity of the horizontal main beam 3, and the anchor plate mounting hole 302 on the connection subunit 20 may be in fluid communication with the casting cavity of the connection subunit 20.

[0051] To achieve the positioning and installation of the horizontal main beam 3, the buoyancy sub-unit 40, and the central core connection module 2, step S3 may include: S31: Insert the anchor plate 301 into the anchor plate mounting hole 302.

[0052] Accordingly, in order to inject concrete into the third positioning structure 300, step S5 may also include: S54: Pour concrete into the connecting sub-unit 20 and the horizontal main beam 3, so that the concrete enters the anchor plate mounting hole 302 through the pouring cavity of the connecting sub-unit 20 and the horizontal main beam 3, so as to cover the part of the anchor plate 301 that is inserted into the anchor plate mounting hole 302.

[0053] Through step S54, the steel buoyancy chamber 4 can be fixedly connected to the horizontal main beam 3 and the central core connection module 2 by utilizing the adhesive effect of concrete.

[0054] refer to Figure 2 as well as Figures 16 to 19 As shown, the fourth positioning structure 400 may include a cable tie beam connector 401, a first inverted tooth 402, and a second inverted tooth 403. The cable tie beam connector 401 may be constructed as a groove-shaped structure with openings at the top and ends. The first inverted tooth 402 may be disposed on the inner sidewall of the cable tie beam connector 401, and the second inverted tooth 403 may be disposed on the outer wall of the cable tie beam 5.

[0055] To achieve the positioning and installation of the cable-stayed beam 5 with the horizontal main beam 3 and the central core connection module 2, step S4 may include: S41: Fix one end of the cable tie beam connector 401 to the top surface of the horizontal main beam 3 or the outer peripheral surface of the wind turbine tower foundation 1; insert the cable tie beam 5 into the cable tie beam connector 401 through the top opening of the cable tie beam connector 401, and abut the side of the second inverted tooth 403 against the side of the first inverted tooth 402.

[0056] Step S41 allows the cable-stayed beam 5 to be tensioned along its own axis between the horizontal main beam 3 and the wind turbine tower foundation 1, thereby forming a stable triangular structure with the horizontal main beam 3 and the wind turbine tower foundation 1, which is beneficial to the stability of the overall structure.

[0057] Accordingly, in order to inject concrete into the fourth positioning structure 400, step S5 may also include: S55: Pour concrete into the annular sandwich structure 10, the horizontal main beam 3 and the cable tie beam 5, so that the concrete flows between the cable tie beam connector 401 and the cable tie beam 5 to wrap the first inverted tooth 402 and the second inverted tooth 403.

[0058] Step S55 enables the bonding and fixing of the cable tie beam connector 401 and the cable tie beam 5 by utilizing the adhesive properties of concrete, as well as the anti-corrosion wrapping of each connection part.

[0059] To improve the connection stability of the fourth positioning structure 400, refer to Figure 18 and Figure 19 As shown, the fourth positioning structure 400 may further include a fourth through hole 404 and a fourth shear key 405. The fourth through hole 404 may be located on the top surface of the horizontal main beam 3 at a position corresponding to the end face of the cable tie beam 5. The fourth through hole 404 may be in fluid communication with the casting cavity of the horizontal main beam 3. The fourth shear key 405 may be arranged around the fourth through hole 404.

[0060] Accordingly, in order to achieve the positioning and installation of the cable-stayed beam 5 with the horizontal main beam 3 and the central core connection module 2, step S4 may also include: S42: Insert the fourth shear key 405 into the end face of the cable-stayed beam 5, so that the fourth shear key 405 enters the casting cavity of the cable-stayed beam 5.

[0061] Corresponding to step S42, step S5 may further include: S56: Pour concrete into the annular sandwich structure 10, the horizontal main beam 3 and the cable tie beam 5, so that the concrete flows into the fourth through hole 404 through the pouring cavity of the horizontal main beam 3 and the annular sandwich structure 10 to fill the fourth shear key 405, so that the concrete wraps around the fourth shear key 405 that enters the pouring cavity of the cable tie beam 5.

[0062] Through step S56, the fourth shear key 405 can bear the shear force between the cable tie beam 5 and the horizontal main beam 3, as well as between the cable tie beam 5 and the wind turbine tower foundation 1. The fourth shear key 405 is poured into concrete, and the concrete provides stability for the fourth shear key 405 during shear resistance.

[0063] In addition, to avoid transportation inconvenience caused by the excessive size of the horizontal main beam 3, refer to Figure 3 , Figure 8 and Figure 9 As shown, the horizontal main beam 3 may include a first main beam unit 31 and a second main beam unit 32 arranged collinearly. A mooring fastener 6 may be disposed at one end of the first main beam unit 31 opposite to the central core connecting module 2. A second positioning structure 200 may be disposed between the end of the second main beam unit 32 opposite to the first main beam unit 31 and the central core connecting module 2. Each of the first and second main beam units 31 and 32 has a pouring cavity, and each of the top surfaces of the first and second main beam units 31 and 32 has a concrete pouring hole that is fluidly connected to its respective pouring cavity. By disassembling the horizontal main beam 3 into the first main beam unit 31 and the second main beam unit 32, the horizontal main beam 3 can be easily stored and transported.

[0064] Corresponding to the structure of the horizontal main beam 3, the assembly method of the offshore floating wind power platform may also include the following steps: S1': Position the first main beam unit 31 relative to the second main beam unit 32 through the fifth positioning structure 500; S5': Pour concrete into the first main beam unit 31 and the second main beam unit 32, so that the concrete flows into the fifth positioning structure 500.

[0065] Step S1' is performed before step S5, and step S5' can be performed synchronously with step S5.

[0066] refer to Figure 8 , Figure 9 as well as Figures 12 to 14 As shown, the fifth positioning structure 500 can be similar in structure to the second positioning structure 200. Specifically, the fifth positioning structure 500 may include a third splicing flange 501, a fourth splicing flange 502, a fifth through hole 503, a fifth shear key 504, and a fifth insertion hole 505. The third splicing flange 501 can be disposed on the end face of the first main beam unit 31 facing the second main beam unit 32, the fourth splicing flange 502 can be disposed on the end face of the second main beam unit 32 facing the first main beam unit 31, the fifth through hole 503 can be disposed on one of the third splicing flange 501 and the fourth splicing flange 502, and the fifth through hole 503 can be in fluid communication with the corresponding casting cavity. The fifth shear key 504 can be disposed around the fifth through hole 503, and the fifth insertion hole 505 can be disposed on the other of the third splicing flange 501 and the fourth splicing flange 502. Alternatively, in a specific embodiment of this disclosure, refer to... Figures 12 to 14 As shown, the fifth through hole 503 and the fifth shear key 504 can be provided on the third splicing flange 501. The fifth through hole 503 can be fluidly connected to the casting cavity of the first main beam unit 31. The fifth insertion hole 505 can be provided on the fourth splicing flange 502. The fifth insertion hole 505 can be fluidly connected to the casting cavity of the second main beam unit 32.

[0067] To position the first main beam unit 31 and the second main beam unit 32 relative to each other, step S1' may include: S11': Insert the fifth shear key 504 into the fifth socket 505; S12': Connect the third splicing flange 501 and the fourth splicing flange 502, and fasten the third splicing flange 501 and the fourth splicing flange 502 together with fasteners.

[0068] Through steps S11' and S12', the positioning and installation of the first main beam unit 31 and the second main beam unit 32 can be achieved.

[0069] Accordingly, in order to inject concrete into the fifth positioning structure 500, step S5' may include: S51': Concrete is poured into the first main beam unit 31 and the second main beam unit 32, so that the concrete enters the fifth through hole 503 through the pouring cavity of one of the first main beam unit 31 and the second main beam unit 32 to fill the fifth shear key 504, so that the concrete enters the fifth insertion hole 505 through the pouring cavity of the other of the first main beam unit 31 and the second main beam unit 32 to wrap the portion of the fifth shear key 504 inserted into the fifth insertion hole 505, and so that the concrete wraps the fasteners that enter the pouring cavities of the first main beam unit 31 and the second main beam unit 32.

[0070] Through step S51', the bonding effect of concrete can be used to achieve the bonding and fixing of the first main beam unit 31 and the second main beam unit 32, as well as the anti-corrosion wrapping of the connection part between the two. The fifth shear key 504 can bear the shear force between the first main beam unit 31 and the second main beam unit 32. The fifth shear key 504 is poured into concrete, and the concrete provides stability for the fifth shear key 504 during shear resistance.

[0071] Since there is a gap between the third splicing flange 501 and the fourth splicing flange 502 when they are spliced, a second pouring notch 506 for pouring concrete can be provided on the top of the third splicing flange 501 and / or the fourth splicing flange 502 to fill the gap.

[0072] Accordingly, step S5' may also include: S52': Concrete is poured between the third splice flange 501 and the fourth splice flange 502 through the second pouring notch 506, so that the concrete covers the fifth shear key 504 and the portion of the fastener located between the third splice flange 501 and the fourth splice flange 502.

[0073] Through step S53, the concrete can fill and bond the gap, and at the same time, it can wrap and protect the portion of the fastener located in the gap from corrosion.

[0074] Based on the above technical solutions, this disclosure also provides an offshore floating wind power platform, which is assembled using the assembly method of the offshore floating wind power platform in the above technical solutions.

[0075] Through the above technical solutions, the offshore floating wind power platform provided in this disclosure has the same technical effect as the assembly method of the offshore floating wind power platform in the above technical solutions. To avoid unnecessary repetition, it will not be elaborated here. In addition, in the offshore floating wind power platform provided in this disclosure, by modularizing the large central core connecting module 2 and the steel buoyancy tank 4, these two are respectively divided into multiple connecting sub-units 20 and multiple buoyancy sub-units 40. This ensures that the size and weight of each sub-unit do not exceed the size and weight of the wind turbine. Since the wind turbine can be delivered by road transport, the connecting sub-units 20, buoyancy sub-units 40, wind turbine tower foundation 1, horizontal main beam 3, and cable tie beam 5 can also be delivered by road transport. This greatly reduces the requirement for using dedicated sites and facilities. In addition, through the modular standardized design, the various parts of the offshore floating wind power platform can be processed and constructed at different locations, and then transported to the assembly site for final assembly, which greatly improves the construction speed of each part and effectively shortens the construction period.

[0076] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0078] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A method for assembling an offshore floating wind power platform, characterized in that, The offshore floating wind power platform includes: The wind turbine tower foundation includes an annular sandwich structure for pouring concrete. The central core connection module is fitted onto the bottom of the wind turbine tower foundation. This module is composed of four connection sub-units, each containing a pouring cavity for concrete. The facility comprises four horizontal main beams, each equipped with a mooring fixture at one end, and a pouring cavity for concrete pouring within each main beam. The steel buoyancy chamber comprises four buoyancy sub-units, and Two inclined tie beams, with pouring cavities for pouring concrete at both ends of the inclined tie beams; The assembly method of the offshore floating wind power platform includes the following steps: The four connecting sub-units are arranged around the bottom of the outer peripheral surface of the wind turbine tower foundation, such that the connecting sub-units are positioned relative to the outer peripheral surface of the wind turbine tower foundation by a first positioning structure. The first positioning structure includes a first through hole, which is in fluid communication with the annular sandwich structure. The horizontal main beams extend radially along the central core connecting module and are spaced apart around the central axis of the wind turbine tower foundation. The other ends of the four horizontal main beams are respectively positioned relative to the central core connecting module through a second positioning structure. The second positioning structure includes a second through hole, which is in fluid communication with the corresponding casting cavity. The buoyancy subunit is placed in the space formed by the two adjacent horizontal main beams and the central core connection module, and the buoyancy subunit is positioned relative to the central core connection module and the horizontal main beams respectively through a third positioning structure. The third positioning structure includes an anchor plate mounting hole, which is in fluid communication with the corresponding casting cavity. The inclined tie beam is connected between the top surface of the horizontal main beam and the outer peripheral surface of the wind turbine tower foundation, such that the ends of the inclined tie beam are relatively positioned relative to the horizontal main beam and the wind turbine tower foundation respectively through the fourth positioning structure, and the two inclined tie beams are symmetrical about the central axis of the wind turbine tower foundation. The fourth positioning structure includes a fourth through hole, which is in fluid communication with the casting cavity of the horizontal main beam. Concrete is poured into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable tie beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure.

2. The assembly method of the offshore floating wind power platform according to claim 1, characterized in that, The first through hole is disposed on the outer peripheral surface of the wind turbine tower foundation, and the first positioning structure further includes: A first shear key is disposed around the first through hole. A first insertion hole is provided on the connecting subunit and is in fluid communication with the casting cavity of the connecting subunit. The first fastening hole is provided on the outer peripheral surface of the wind turbine tower foundation and on the connecting subunit. The step of surrounding the bottom of the outer periphery of the wind turbine tower foundation with the four connecting sub-units, such that the connecting sub-units are positioned relative to the outer periphery of the wind turbine tower foundation by means of the first positioning structure, includes: Insert the first shear key into the first socket; Fasteners are passed through the first fastening holes on the wind turbine tower foundation and the connecting subunit, thereby securing the wind turbine tower foundation and the connecting subunit together.

3. The assembly method of the offshore floating wind power platform according to claim 2, characterized in that, The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured into the annular sandwich structure and the connecting subunit, so that the concrete enters the first through hole through the annular sandwich structure to fill the first shear key, and the concrete enters the first insertion hole through the pouring cavity of the connecting subunit to wrap the first shear key, and the concrete wraps the fasteners that enter the pouring cavity of the connecting subunit and the annular sandwich structure.

4. The assembly method of the offshore floating wind power platform according to claim 1, characterized in that, The second positioning structure includes: The first splicing flange is located on the end face of the horizontal main beam facing the central core connecting module. The second splicing flange is disposed on the side wall of the central core connection module, and the second through hole is disposed in one of the first splicing flange and the second splicing flange. A second shear key is disposed around the second through hole, and The second insertion hole is provided in the other of the first splicing flange and the second splicing flange; The step of causing the horizontal main beams to extend radially along the central core connecting module and be spaced apart around the central axis of the wind turbine tower foundation, such that the other ends of the four horizontal main beams are respectively positioned relative to the central core connecting module through the second positioning structure, includes: Insert the second shear key into the second socket; The second splicing flange is spliced ​​with the first splicing flange, and the second splicing flange is fastened to the first splicing flange using fasteners.

5. The assembly method of the offshore floating wind power platform according to claim 4, characterized in that, The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured into the connecting subunit and the horizontal main beam, such that the concrete enters the second through hole through the pouring cavity of one of the connecting subunit and the horizontal main beam to fill the second shear key, and the concrete enters the second insertion hole through the pouring cavity of the other of the connecting subunit and the horizontal main beam to wrap the portion of the second shear key inserted into the second insertion hole, and the concrete wraps the fasteners that enter the pouring cavities of the connecting subunit and the horizontal main beam.

6. The assembly method of the offshore floating wind power platform according to claim 4, characterized in that, The top of the first splicing flange and / or the second splicing flange is provided with a first pouring notch for pouring concrete; The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured between the first splice flange and the second splice flange through the first pouring notch, so that the concrete covers the portion of the second shear key and the fastener located between the first splice flange and the second splice flange.

7. The assembly method of the offshore floating wind power platform according to claim 1, characterized in that, The anchor plate mounting holes are provided on the side wall of the horizontal main beam and the side wall of the central core connection module. The third positioning structure also includes an anchor plate, which is provided on the side wall of the buoyancy sub-unit. The step of placing the buoyancy sub-unit in the space formed by the two adjacent horizontal main beams and the central core connecting module, and positioning the buoyancy sub-unit relative to the central core connecting module and the horizontal main beams respectively through the third positioning structure, includes: Insert the anchor plate into the anchor plate mounting hole.

8. The assembly method of the offshore floating wind power platform according to claim 7, characterized in that, The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured into the connecting subunit and the horizontal main beam, so that the concrete enters the anchor plate mounting hole through the pouring cavity of the connecting subunit and the horizontal main beam to cover the portion of the anchor plate inserted into the anchor plate mounting hole.

9. The assembly method of the offshore floating wind power platform according to claim 1, characterized in that, The fourth positioning structure includes: The cable-stayed beam connector is constructed as a slotted structure with openings at the top and ends. The first inverted tooth is disposed on the inner side wall of the inclined tie beam connector, and The second inverted tooth is disposed on the outer wall of the inclined beam; The step of connecting the inclined tie beam between the top surface of the horizontal main beam and the outer peripheral surface of the wind turbine tower foundation, such that the ends of the inclined tie beam are relatively positioned relative to the horizontal main beam and the wind turbine tower foundation respectively through the fourth positioning structure, and such that the two inclined tie beams are symmetrical about the central axis of the wind turbine tower foundation, includes: One end of the cable tie beam connector is fixedly connected to the top surface of the horizontal main beam or the outer circumference of the wind turbine tower foundation; The cable tie beam can be inserted into the cable tie beam connector through the top opening of the cable tie beam connector, and the side of the second inverted tooth abuts against the side of the first inverted tooth.

10. The assembly method of the offshore floating wind power platform according to claim 9, characterized in that, The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured into the annular sandwich structure, the horizontal main beam, and the cable tie beam, so that the concrete flows between the cable tie beam connector and the cable tie beam to wrap the first inverted tooth and the second inverted tooth.

11. The assembly method of the offshore floating wind power platform according to claim 9, characterized in that, The fourth through hole is located on the top surface of the horizontal main beam at a position corresponding to the end face of the cable tie beam. The fourth positioning structure also includes a fourth shear key, which is arranged around the fourth through hole. The step of connecting the inclined tie beam between the top surface of the horizontal main beam and the outer peripheral surface of the wind turbine tower foundation, such that the ends of the inclined tie beam are relatively positioned relative to the horizontal main beam and the wind turbine tower foundation respectively through the fourth positioning structure, and making the two inclined tie beams symmetrical about the central axis of the wind turbine tower foundation, further includes: The fourth shear key is inserted into the end face of the cable-stayed beam, so that the fourth shear key enters the casting cavity of the cable-stayed beam.

12. The assembly method of the offshore floating wind power platform according to claim 11, characterized in that, The step of pouring concrete into the annular sandwich structure, the connecting subunit, the horizontal main beam, and the cable-stayed beam, so that the concrete flows into the first positioning structure, the second positioning structure, the third positioning structure, and the fourth positioning structure, includes: Concrete is poured into the annular sandwich structure, the horizontal main beam, and the cable tie beam, so that the concrete flows into the fourth through hole through the pouring cavity of the horizontal main beam and the annular sandwich structure to fill the fourth shear key, so that the concrete encapsulates the fourth shear key that enters the pouring cavity of the cable tie beam.

13. The assembly method of the offshore floating wind power platform according to claim 1, characterized in that, The horizontal main beam includes: The first main beam unit, wherein the mooring fastener is disposed at one end of the first main beam unit opposite to the central core connecting module, and The second main beam unit is used to connect the first main beam unit and the central core connection module; The assembly method of the offshore floating wind power platform also includes the following steps: The first main beam unit is positioned relative to the second main beam unit via the fifth positioning structure; Concrete is poured into the first main beam unit and the second main beam unit, so that the concrete flows into the fifth positioning structure.

14. The assembly method of the offshore floating wind power platform according to claim 13, characterized in that, The fifth positioning structure includes: The third splicing flange is disposed on the end face of the first main beam unit facing the second main beam unit. The fourth splicing flange is located on the end face of the second main beam unit facing the first main beam unit. A fifth through hole is provided in one of the third and fourth splicing flanges, and the fifth through hole is in fluid communication with the corresponding casting cavity. The fifth shear key is arranged around the fifth through hole, and The fifth insertion hole is located on the other of the third and fourth splicing flanges; The step of positioning the first main beam unit relative to the second main beam unit using the fifth positioning structure includes: Insert the fifth shear key into the fifth socket; The third splicing flange is spliced ​​with the fourth splicing flange, and the third splicing flange and the fourth splicing flange are fastened together with fasteners.

15. The assembly method of the offshore floating wind power platform according to claim 14, characterized in that, The step of pouring concrete into the first main beam unit and the second main beam unit, so that the concrete flows into the fifth positioning structure, includes: Concrete is poured into the first main beam unit and the second main beam unit, such that the concrete enters the fifth through hole through the pouring cavity of one of the first main beam unit and the second main beam unit to fill the fifth shear key, and the concrete enters the fifth insertion hole through the pouring cavity of the other of the first main beam unit and the second main beam unit to wrap the portion of the fifth shear key inserted into the fifth insertion hole, and the concrete wraps the fasteners that enter the pouring cavities of the first main beam unit and the second main beam unit.

16. The assembly method of the offshore floating wind power platform according to claim 14, characterized in that, The top of the third splicing flange and / or the fourth splicing flange is provided with a second pouring notch for pouring concrete; The step of pouring concrete into the first main beam unit and the second main beam unit, so that the concrete flows into the fifth positioning structure, includes: Concrete is poured between the third and fourth splice flanges through the second pouring notch, so that the concrete covers the portion of the fifth shear key and the fastener located between the third and fourth splice flanges.

17. A floating offshore wind power platform, characterized in that, The offshore floating wind power platform is assembled using the assembly method of any one of claims 1 to 16.

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