Offshore wind power platform and operation and maintenance system and construction method thereof

Abstract

The invention discloses an offshore wind power platform and an operation and maintenance system and a construction method thereof. The offshore wind power platform comprises a supporting assembly, a floating body part and a connecting assembly. The supporting assembly comprises a center stand column and a plurality of side stand columns distributed around the center stand column at intervals. The floating body pieces are arranged at the bottoms of the side stand columns, and the floating body pieces and the side stand columns are connected and fixed through first fasteners. The connecting assembly comprises at least two connecting pieces, the two ends of at least one connecting piece are connected with the side stand columns and the center stand column through second fasteners, and the two ends of at least one connecting piece are connected with the floating body pieces and the center stand column through second fasteners. The supporting assembly, the connecting assembly and the floating body piece are all prefabricated, and the first fastening piece and the second fastening piece are both made of shape memory alloy materials. According to the offshore wind power platform, the supporting assembly, the connecting assembly and the floating body piece are prefabricated and formed correspondingly, and the installation convenience of the offshore wind power platform is improved. Meanwhile, the shape memory alloy fasteners are adopted for connection, and the stability of the offshore wind power platform can be guaranteed.

Description

Technical Field

[0001] The present application relates to the field of offshore wind power technology, and more specifically, to an offshore wind power platform and its operation and maintenance system and construction method. Background Art

[0002] Floating wind turbine platforms primarily include single-pillar, tension-leg, and barge-type platforms. Single-pillar platforms have high requirements for port depth and towing vessels, making them unsuitable for shallow ports or complex sea conditions. Tension-leg platforms have high requirements for anchoring systems, and the coupling of the platform's dynamic response with the wave period can easily lead to high-frequency fatigue damage. Barge-type platforms have a shallow draft and poor stability, resulting in large roll angles when waves exceed 4 meters, seriously affecting the turbine's power generation efficiency and structural safety. These traditional offshore wind turbine platform technologies are limited by factors such as water depth, structural stability, and economics, making them difficult to meet the large-scale development needs of deep-sea scenarios. Furthermore, most of these platforms are monolithic structures, requiring full-scale fabrication onshore and relying on large, specialized vessels for towing and installation. Only a few ports have the capacity to build and tow such large platforms, making floating wind turbine installation relatively inconvenient. The towing process requires high-value vessel resources for weeks and is significantly restricted by weather windows. Furthermore, the installation of monolithic platforms may require seabed foundation treatment, disrupting the benthic habitat.

[0003] Therefore, how to improve the installation convenience of offshore wind power platforms while ensuring the stability of offshore wind power platforms has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an offshore wind power platform to improve the convenience of installation of the offshore wind power platform while ensuring the stability of the offshore wind power platform.

[0005] Another object of the present application is to provide an offshore wind power platform operation and maintenance system for the above-mentioned offshore wind power platform.

[0006] Another object of the present application is to provide a method for constructing an offshore wind power platform for the above-mentioned offshore wind power platform.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] An offshore wind power platform, comprising:

[0009] A support assembly, the support assembly comprising a central column and a plurality of side columns spaced apart around the central column, the central column being used to support the fan;

[0010] A float member, the float member is used to provide ballast, and the float member is arranged at the bottom of the side column, and the float member is connected and fixed to the side column by a first fastener;

[0011] a connecting assembly, wherein the connecting assembly is multiple and is used to connect the central column and the side columns, and the connecting assembly includes at least two connecting members, at least one of the connecting members having two ends used to connect the side column and the central column via a second fastener, and at least one of the connecting members having two ends used to connect the floating member and the central column via the second fastener;

[0012] The supporting assembly, the connecting assembly and the floating body are all prefabricated, and the first fastener and the second fastener are both made of shape memory alloy material.

[0013] Optionally, in the above-mentioned offshore wind power platform, the connecting parts include side connecting plates and connecting cover plates arranged in pairs, the side connecting plates include multiple sub-connecting side plates, the connecting cover plates include multiple sub-connecting cover plates, the sub-connecting cover plates and the sub-connecting side plates are prefabricated as one piece, and each of the sub-connecting side plates is connected to the sub-connecting cover plates by a hinge.

[0014] Optionally, in the above-mentioned offshore wind power platform, the connecting member includes a first connecting member and a second connecting member, the first connecting member is connected between the side column and the center column, the second connecting member is connected between the floating member and the center column, and the first connecting member has a first inspection channel for inspection and maintenance, and the second connecting member has a second inspection channel for inspection and maintenance and a connecting cavity for applying load.

[0015] Optionally, in the above-mentioned offshore wind power platform, connecting horizontal partitions distributed along the first direction and connecting vertical partitions distributed along the second direction are provided in the connecting cavity, and the connecting horizontal partitions and the connecting vertical partitions are arranged perpendicular to each other to separate the connecting cavity into a plurality of connecting compartments, and the connecting compartments are one of the ballast tank, the equipment compartment and the empty compartment.

[0016] Optionally, in the above-mentioned offshore wind power platform, the first connecting member further has a first cable channel for passing the cable and a first hydraulic pipe channel for passing the hydraulic pipe, and a plurality of first hydraulic cylinders are provided in the first hydraulic pipe channel, and the first hydraulic cylinders are provided at the segmented interface of the first connecting member;

[0017] The second connecting member also has a second cable channel for passing the cable and a second hydraulic pipe channel for passing the hydraulic pipe. The second cable channel is located above the second inspection channel, and a plurality of second hydraulic cylinders are arranged in the second hydraulic pipe channel. The second hydraulic cylinders are arranged at the segmented interface of the second connecting member.

[0018] Optionally, in the above-mentioned offshore wind power platform, the central column has a central column cavity, and the side columns have side column cavities;

[0019] The central column cavity is provided with a central cable channel for passing the cable, a central inspection channel for inspection and maintenance, and a central hydraulic pipe channel for passing the hydraulic pipe. The central inspection channel is sleeved on the outside of the central cable channel, and the central hydraulic pipe channel is communicated with the first hydraulic pipe channel and the second hydraulic pipe channel respectively.

[0020] The side column cavity is provided with a side cable channel for passing the cable and a side inspection channel for inspection and maintenance which is sleeved on the outside of the side cable channel. The first inspection channel is respectively connected with the central inspection channel and the side inspection channel, the second inspection channel is respectively connected with the central inspection channel and the side inspection channel, the first cable channel is respectively connected with the central cable channel and the side cable channel, and the second cable channel is respectively connected with the central cable channel and the side cable channel.

[0021] Optionally, in the above-mentioned offshore wind power platform, the central column cavity has a first central cabin and a second central cabin for applying ballast, the first central cabin is located above the second central cabin, the first central cabin is one of an equipment cabin and an empty cabin, and a plurality of central partitions are arranged in the second central cabin along the circumferential direction of the central column to divide the second central cabin into a plurality of central sub-cabins, and the central sub-cabins are one of a ballast tank and an empty cabin; and / or,

[0022] The side column cavity has a first side compartment for placing equipment and a second side compartment for applying ballast, the first side compartment is located above the second side compartment, and a plurality of first side partitions are arranged in the first side compartment at axial intervals along the side column to separate the first side compartment into a plurality of first side sub-compartments, the first side sub-compartments being one of the equipment compartment and the empty compartment, and a plurality of second side partitions are arranged in the second side compartment at axial intervals along the side column to separate the second side compartment into a plurality of second side sub-compartments, the second side sub-compartments being one of the ballast compartment and the empty compartment.

[0023] Optionally, in the above-mentioned offshore wind power platform, the central maintenance passage is located at the central axis of the central column, and a first spiral ladder for easy maintenance is provided on the inner wall of the central maintenance passage; and / or,

[0024] The side inspection passage is located at the central axis of the side column, and a second spiral ladder is provided on the inner wall of the side inspection passage for easy inspection.

[0025] Optionally, in the above-mentioned offshore wind power platform, the float member has a float cavity for applying load, and a plurality of float partitions are arranged in the float cavity at intervals along the circumferential direction of the float member to divide the float cavity into a plurality of float compartments, and the float compartment is one of a ballast tank and an empty tank.

[0026] Optionally, in the above-mentioned offshore wind power platform, the floating body includes a plurality of floating body arc-shaped side panels and floating body cover plates arranged at both ends of the floating body arc-shaped side panels, the floating body arc-shaped side panels and the floating body cover plates are prefabricated as one piece, and one of the two floating body cover plates is provided with a through hole, the aperture of the through hole is equal to the outer diameter of the side column.

[0027] Optionally, in the above-mentioned offshore wind power platform, the central column includes one or more sub-central columns, and the sub-central columns include multiple arc-shaped central side panels and central cover plates, the arc-shaped central side panels and the central cover plates are prefabricated and integrally formed, and each of the arc-shaped central side panels is connected to the central cover plate by welding; and / or,

[0028] The side columns include one or more side columns, and the side columns include multiple arc-shaped side panels and side covers. The arc-shaped side panels and the side covers are prefabricated and integrally formed, and each of the arc-shaped side panels is connected to the side cover by welding.

[0029] Optionally, the above-mentioned offshore wind power platform also includes a mooring system, which includes an anchor chain, one end of the anchor chain is connected to the side column, and the other end of the anchor chain is used to connect to an anchor point on the seabed, each side column is connected to a plurality of the anchor chains, and the anchor chains are in the form of a catenary.

[0030] An offshore wind power platform operation and maintenance system, for use on an offshore wind power platform as described in any one of the preceding items, comprising a detection element, wherein the detection element comprises a pressure sensor, a humidity sensor, and a fiber Bragg grating sensor; the pressure sensor and the humidity sensor are both disposed on the float; the pressure sensor and the humidity sensor are used to detect the sealing of the float; the fiber Bragg grating sensor is disposed at a joint between the float, the connector, and the support assembly; the fiber Bragg grating sensor is used to monitor structural deformation;

[0031] When the pressure sensor and the humidity sensor detect that the float has leaked, repairing the leak is performed by injecting repair glue into the leak point;

[0032] When the fiber grating sensor detects damage, if the damage value does not exceed a preset range, the damaged part is repaired by injecting repair glue into the damaged part; if the damage value exceeds the preset range, the damaged part is replaced.

[0033] Optionally, the above-mentioned offshore wind power platform operation and maintenance system further includes a prediction platform, which can be calibrated according to the real-time data detected by the detection element to predict the fatigue life of the structure.

[0034] A method for constructing an offshore wind power platform, for the offshore wind power platform as described in any one of the above items, comprising the steps of:

[0035] A prefabricated platform assembly, comprising the central column, the side columns, the floating member, and the connecting member, wherein the central column, the side columns, the floating member, and the connecting member are prefabricated in pieces, the central column comprising a plurality of arcuate central side panels and a central cover panel, the side columns comprising a plurality of arcuate side panels and an edge cover panel, the floating member comprising a plurality of floating body arcuate side panels and floating body cover panels disposed at both ends of the floating body arcuate side panels, and one of the two floating body cover panels is provided with a through hole, the connecting member comprising a plurality of sub-connecting side panels and sub-connecting cover panels, and each of the sub-connecting side panels is connected to the sub-connecting cover panels by a hinge;

[0036] Transporting the platform assembly to an installation area, wherein the central column, the side columns, and the float are transported in a nested stacking manner, and the connecting member is transported in a folded manner;

[0037] Assembling the platform assembly, welding each of the arc-shaped central side panels and the central cover plate to form the central column, welding each of the arc-shaped side panels and the side cover plate to form the side columns, welding each of the arc-shaped side panels of the floating body to the floating body cover plate to form the floating body, and pre-installing cable pipes and ballast pump groups in the central column, the side columns, and the floating body, and connecting the side columns and the floating body with the first fasteners to form a floating body support member, and unfolding and fixing the connecting members;

[0038] The platform is installed to transport the central column, the floating support member and the connecting member to the target sea area, and the draft of the side columns and the floating member are adjusted to the same horizontal plane through the ballast pump group, and the side columns and the floating member are respectively connected to the central column through the connecting member, and the connection positions of the side columns, the floating member, the central column and the connecting member are locked by the second fastener.

[0039] Optionally, in the above-mentioned offshore wind power platform construction method, the following steps are further included between the step of assembling platform components and the step of installing the platform:

[0040] The water tightness test is carried out by injecting compressed air into the interior of the floating support and the connecting member and maintaining the pressure for a preset time. If the pressure drop rate is less than a preset value, the water tightness of the floating support and the connecting member is qualified.

[0041] The offshore wind power platform provided by the present application can install the wind turbine on the central column of the support assembly, and multiple side columns can be spaced around the central column. At the same time, a floating body is provided at the bottom of the side column. The floating body is connected to the side column by a first fastener, and the floating body and the side column can be connected to the central column by a connector. The floating body, the side column, the central column and the connector are connected by a second fastener, so that the floating body can provide ballast for the offshore wind power platform to lower the center of gravity and maintain the balance of the offshore wind power platform. Among them, the support assembly, the connecting assembly and the floating body are all prefabricated, and the first fastener and the second fastener are both made of shape memory alloy material. As can be seen from the above example, the offshore wind power platform provided by the present application, by prefabricating the support assembly, the connecting assembly and the floating body separately, can facilitate the transportation and installation of the support assembly, the connecting assembly and the floating body. Compared with the integral structure, it reduces the dependence on large ports and improves the convenience of installation of the offshore wind power platform. At the same time, the first fasteners and the second fasteners made of shape memory alloy material are connected to the floating body, side columns, central columns and connecting parts, so that the first fasteners and the second fasteners can enter the dynamic pre-tightening mode when powered on to compensate for the pre-tightening force attenuation caused by dynamic wave loads, thereby ensuring the stability of the offshore wind power platform.

[0042] The technical features mentioned above, the technical features described below, and the technical features shown individually in the accompanying drawings may be combined arbitrarily, as long as the combined technical features do not conflict with each other. All possible feature combinations are technical contents explicitly described in this document. Any of the multiple sub-features included in the same statement can be applied independently and does not necessarily have to be applied in conjunction with the other sub-features. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0044] Figure 1 A schematic diagram of the structure of an offshore wind power platform provided in an embodiment of the present application;

[0045] Figure 2 A front view of an offshore wind power platform provided in an embodiment of the present application;

[0046] Figure 3 A top view of an offshore wind power platform provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the structure of the central column and side columns provided in the embodiment of the present application;

[0048] Figure 5 A front view of the central column and side column compartments provided in an embodiment of the present application;

[0049] Figure 6 A schematic diagram of the structure of the first connecting member compartment provided in an embodiment of the present application;

[0050] Figure 7 A side view of a first connector compartment provided in an embodiment of the present application;

[0051] Figure 8 A schematic diagram of the structure of the second connecting member compartment provided in an embodiment of the present application;

[0052] Figure 9 A side view of a second connector compartment provided in an embodiment of the present application;

[0053] Figure 10 Schematic diagram of the process of constructing an offshore wind power platform provided in the embodiment of this application Figure 1 ;

[0054] Figure 11 Schematic diagram of the process of constructing an offshore wind power platform provided in the embodiment of this application Figure 2 .

[0055] Among them, 100 is an offshore wind power platform, 10 is a supporting assembly, 11 is a central column, 111 is a central column cavity, 1111 is a central cable channel, 1112 is a central maintenance channel, 1113 is a central hydraulic pipe channel, 1114 is a first central cabin, 1115 is a second central cabin, 1116 is a central partition, 1117 is a central sub-cabin, 1118 is a first spiral ladder, 12 is a side column, 121 is a side column cavity, 1211 is a side cable channel, 1212 is a side maintenance channel, 1213 is a first side cabin, 1214 is a second side cabin, 1215 is a first side partition, 1216 is a first side sub-cabin, 1217 is a second side partition, 1218 is a second side sub-cabin, 1 219 is the second spiral ladder, 20 is the floating body, 21 is the floating body cavity, 211 is the floating body partition, 212 is the floating body compartment, 30 is the connecting assembly, 31 is the connecting member, 311 is the first connecting member, 3111 is the first inspection channel, 3112 is the first cable channel, 3113 is the first hydraulic pipe channel, 3114 is the first hydraulic cylinder, 312 is the second connecting member, 3121 is the second inspection channel, 3122 is the connecting cavity, 3123 is the connecting horizontal partition, 3124 is the connecting vertical partition, 3125 is the connecting compartment, 3126 is the second cable channel, 3127 is the second hydraulic pipe channel, 3128 is the second hydraulic cylinder, 40 is the mooring system, 41 is the anchor chain, and 200 is the wind turbine. DETAILED DESCRIPTION

[0056] The core of this application is to provide an offshore wind power platform to improve the convenience of installation of the offshore wind power platform while ensuring the stability of the offshore wind power platform.

[0057] Another core of this application is to provide an offshore wind power platform operation and maintenance system for the above-mentioned offshore wind power platform.

[0058] Another core of this application is to provide a method for constructing an offshore wind power platform for the above-mentioned offshore wind power platform.

[0059] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0060] With the rapid growth of global demand for renewable energy, offshore wind power is gradually expanding into deep-sea areas. Traditional floating wind turbine platforms mainly include single-column, tension-leg, and barge-type platforms. Single-column platforms have high requirements for port water depth and towing vessels, and are not suitable for shallow ports or complex sea conditions. Tension-leg platforms have high requirements for anchoring systems, and the coupling of the platform's dynamic response with the wave cycle can easily cause high-frequency fatigue damage. Barge-type platforms have a shallow draft and poor stability. When wave heights exceed 4 meters, they roll at a large angle, seriously affecting the wind turbine's power generation efficiency and structural safety.

[0061] The above-mentioned traditional offshore wind power platform technologies are limited by factors such as water depth, structural stability, and economic efficiency, making it difficult to meet the large-scale development needs of deep-sea scenarios. At the same time, most of these platforms are monolithic structures, requiring full-scale manufacturing onshore and relying on large specialized vessels for towing and installation. Only a few ports have the capacity to build and tow ultra-large platforms, making the installation of floating wind power platforms relatively inconvenient. The towing process requires high-value ship resources for up to several weeks and is significantly restricted by weather windows. In addition, the installation of monolithic platforms may require the treatment of the seabed foundation, which will damage the habitat of benthic organisms.

[0062] For this reason, Figure 1 As shown, an embodiment of the present application discloses an offshore wind power platform 100, comprising a support assembly 10, a float 20, and a connection assembly 30. By prefabricating the support assembly 10, the connection assembly 30, and the float 20, the transportation and installation of the support assembly 10, the connection assembly 30, and the float 20 are facilitated. Compared to a monolithic structure, this reduces dependence on large ports and improves the ease of installation of the offshore wind power platform 100. Furthermore, first and second fasteners made of shape memory alloy material connect the float 20, the side columns 12, the center column 11, and the connection 31, allowing the first and second fasteners to enter a dynamic preload mode when energized to compensate for the attenuation of the preload force caused by dynamic wave loads, thereby ensuring the stability of the offshore wind power platform 100.

[0063] The following will be combined Figures 1 to 9 The offshore wind power platform 100 disclosed in the embodiment of the present application is specifically explained and illustrated.

[0064] like Figure 1As shown, support assembly 10 may include a central column 11 and multiple side columns 12 spaced apart around central column 11. Specifically, three, four, or more side columns 12 may be used, and each side column 12 may be spaced apart around central column 11. The tower of wind turbine 200 may be mounted on central column 11, and multiple floats 20 may be used to match the side columns 12. Float 20 may be disposed at the bottom of side columns 12 and connected to side columns 12 via first fasteners. The floats 20 provide ballast for offshore wind turbine platform 100, lowering its center of gravity and ensuring balance and stability under the effects of gravity and buoyancy, thereby preventing it from capsizing. Furthermore, multiple connection assemblies 30 may be used to match the side columns 12, allowing central column 11 and side columns 12 to be connected via connection assemblies 30, thereby forming offshore wind turbine platform 100.

[0065] like Figure 1 and Figure 2 As shown, the connection assembly 30 may include at least two connectors 31, that is, two, three, or more connectors 31 may be used to ensure the reliability of the connection between the side column 12 and the center column 11. At the same time, the two ends of at least one connector 31 may be connected between the side column 12 and the center column 11 via a second fastener, that is, one connector 31 may be connected between the side column 12 and the center column 11, or two or more connectors 31 may be connected therebetween. Moreover, the two ends of at least one connector 31 may be connected between the floating body 20 and the center column 11 via a second fastener, that is, one connector 31 may be connected between the floating body 20 and the center column 11, or two or more connectors 31 may be connected therebetween, thereby ensuring the overall stability of the offshore wind power platform 100.

[0066] In the above embodiment, the support assembly 10, the connection assembly 30 and the float member 20 can all be prefabricated, so as to facilitate the transportation and installation of the support assembly 10, the connection assembly 30 and the float member 20. Compared with the integral structure, the dependence on large ports is reduced, and the installation convenience of the offshore wind power platform 100 is improved. At the same time, the first fastener and the second fastener can both be bolts made of shape memory alloy materials, etc., to achieve the connection between the float member 20, the side column 12, the center column 11 and the connection member 31, so that the first fastener and the second fastener can enter the dynamic pre-tightening mode when powered on to compensate for the pre-tightening force attenuation caused by dynamic wave loads, thereby ensuring the stability of the offshore wind power platform 100.

[0067] In some embodiments, as Figure 1 and Figure 3As shown, three side columns 12 can be used, and the three side columns 12 can be evenly spaced around the central column 11 to form an equilateral triangle. At the same time, two connectors 31 can be used between each side column 12 and the central column 11. One connector 31 can be connected between the side column 12 and the central column 11 via a second fastener, and the other connector 31 can be connected between the floating body 20 and the central column 11 via a second fastener, thereby forming a stable equilateral triangle structure system for the offshore wind power platform 100.

[0068] In some embodiments, the connector 31 may include a pair of side connector plates and a connector cover plate. The side connector plates include multiple sub-connection side plates, and the connector cover plate includes multiple sub-connection cover plates. The sub-connection cover plates and the sub-connection side plates are prefabricated and integrally formed. Each sub-connection side plate and each sub-connection cover plate can be connected to each other via a hinge to facilitate the transportation and installation of the connector 31. When the connector 31 is being transported, the connector 31 can be folded and stored in a container. When the connector 31 is transported to its destination, the connector 31 can be unfolded for installation.

[0069] like Figure 1 and Figure 2 As shown, for ease of understanding, the two connecting members 31 of each connecting assembly 30 are respectively defined as a first connecting member 311 and a second connecting member 312, and the first connecting member 311 can be located above the second connecting member 312, that is, the first connecting member 311 is connected between the side column 12 and the center column 11, and the second connecting member 312 is connected between the floating member 20 and the center column 11.

[0070] In some embodiments, the two connection cover plates of the first connector 311 may each consist of 12 sub-connection cover plates, and the two side connection plates of the first connector 311 may each consist of 12 sub-connection side plates. Simultaneously, the two connection cover plates of the second connector 312 may each consist of 10 sub-connection cover plates, and the two side connection plates of the second connector 312 may each consist of 10 sub-connection side plates.

[0071] In some embodiments, as Figures 6 to 9 As shown, the first connecting member 311 has a first inspection channel 3111 for easy inspection and maintenance, and the second connecting member 312 has a second inspection channel 3121 for easy inspection and maintenance and a connection cavity 3122 for applying load. Figure 8As shown, the connecting cavity 3122 may be provided with one or more connecting horizontal baffles 3123 distributed along a first direction and one or more connecting vertical baffles 3124 distributed along a second direction. The connecting horizontal baffles 3123 and the connecting vertical baffles 3124 are arranged perpendicular to each other, thereby dividing the connecting cavity 3122 into a plurality of connecting sub-compartments 3125. The connecting sub-compartments 3125 may be any of ballast tanks, equipment compartments, and void compartments. That is, the connecting sub-compartments 3125 may be ballast tanks for applying loads, or equipment compartments for accommodating equipment such as water pumps. Of course, the connecting sub-compartments 3125 may also be void compartments. It should be noted that the first direction is the thickness direction of the connecting member 31, and the second direction is the length direction of the connecting member 31.

[0072] In some embodiments, a square opening communicating with the first inspection channel 3111 may be provided in the middle of the side wall of the first connecting member 311. The square opening may be 1.5 meters in length and width to facilitate personnel entry and exit and equipment replacement. A recessed flange may be used at the square opening, with the flange surface of the recessed flange 20 mm lower than the top wall of the first connecting member 311 to prevent collision damage.

[0073] In some embodiments, as Figure 6 As shown, the first connecting member 311 may also have a first cable channel 3112 through which the cable can pass and a first hydraulic pipe channel 3113 through which the hydraulic pipe can pass, and the first cable channel 3112 and the first hydraulic pipe channel 3113 are sequentially arranged side by side with the first inspection channel 3111 along the third direction. Figure 6 and Figure 7 As shown, a plurality of first hydraulic cylinders 3114 may be provided in the first hydraulic pipe channel 3113, and the first hydraulic cylinders 3114 may be provided at the segmented interface of the first connecting member 311. Figure 8 As shown, the second connecting member 312 may further have a second cable channel 3126 through which the cable can pass and a second hydraulic pipe channel 3127 through which the hydraulic pipe can pass. The second cable channel 3126, the second hydraulic pipe channel 3127 and the second inspection channel 3121 are arranged side by side with the connecting cavity 3122 along the third direction, and the second cable channel 3126 may be located above the second inspection channel 3121. Figure 8 and Figure 9As shown, a plurality of second hydraulic cylinders 3128 can be provided in the second hydraulic pipe channel 3127, and the second hydraulic cylinders 3128 can be provided at the segmented interface of the second connector 312. The cables in the first cable channel 3112 and the second cable channel 3126 can be connected to electrical equipment such as the fan 200 and the water pump, respectively, so that the electric energy generated by the fan 200 can be directly supplied to the electrical equipment such as the water pump. After the first connector 311 and the second connector 312 are transported to their proper locations, the first hydraulic cylinder 3114 and the second hydraulic cylinder 3128 can be used to push the first connector 311 and the second connector 312 to unfold and drive the spring hydraulic conical pin to be inserted into the positioning hole, and can simultaneously press the sealing strip at the segmented interface to eliminate the gap in the joint and ensure sealing. It should be noted that the third direction is the width direction of the connector 31.

[0074] In some embodiments, the hydraulic pipes within the first and second hydraulic pipe passages 3113 and 3127 communicate only within the interiors of the first and second connectors 311 and 312, and the hydraulic pipes can be positioned 40 mm from the outer walls of the first and second hydraulic pipe passages 3113 and 3127, respectively. The main hydraulic pipes can be stainless steel rigid pipes, and the hydraulic pipes at the segmented connections between the first and second connectors 311 and 312 can be metal hoses. The hydraulic pump station and the hydraulic pipes are connected via detachable hoses to facilitate disconnection during transport. Once hoisted into position, the detachable hoses of the hydraulic pump station can be connected to the hydraulic pipe inlets. The hydraulic pumps are then activated, and the first and second hydraulic cylinders 3114 and 3128 push the first and second connectors 311 and 312 into position, driving the spring-loaded hydraulic taper pins into the positioning holes to lock them. It should be noted that when there is no ongoing hydraulic demand, the detachable hoses between the hydraulic pump station and the hydraulic pipes can be disconnected, leaving only the mechanical lock. If the first connecting member 311 and the second connecting member 312 fail and need to be replaced separately, the detachable hose can be reconnected and used.

[0075] In some embodiments, as Figure 4 and Figure 5As shown, the central column 11 may have a central column cavity 111, and the central column cavity 111 has a first central compartment 1114 and a second central compartment 1115 capable of applying ballast. The first central compartment 1114 is located above the second central compartment 1115. The first central compartment 1114 can be either an equipment compartment or a void compartment, that is, the first central compartment 1114 can be an equipment compartment for storing equipment such as a water pump, or it can be a void compartment. The second central compartment 1115 can be provided with a plurality of central partitions 1116 spaced apart along the circumferential direction of the central column 11, that is, there can be two, three, or more central partitions 1116, so as to divide the second central compartment 1115 into a plurality of central sub-compartments 1117. The central sub-compartments 1117 can be either ballast compartments or void compartments, that is, the central sub-compartments 1117 can be either ballast compartments capable of applying loads or void compartments. Furthermore, a hydraulic system compartment may be provided above the first central compartment 1114, and a hydraulic pump station may be arranged within the hydraulic system compartment to provide a power source for the first hydraulic cylinder 3114 and the second hydraulic cylinder 3128. Furthermore, a transformer compartment for accommodating a transformer and a cable transition compartment for cable transition may be provided above the first central compartment 1114.

[0076] In some embodiments, as Figure 4 and Figure 5 As shown, a central cable channel 1111, a central inspection channel 1112, and a central hydraulic pipe channel 1113 may be provided within the central column cavity 111. The central inspection channel 1112 is sleeved outside the central cable channel 1111, and the central hydraulic pipe channel 1113 may be connected to the first hydraulic pipe channel 3113 and the second hydraulic pipe channel 3127, respectively. This allows the hydraulic pump station on the central column 11 to provide power to the first hydraulic cylinder 3114 in the first hydraulic pipe channel 3113 and the second hydraulic cylinder 3128 in the second hydraulic pipe channel 3127 via the hydraulic pipes within the central hydraulic pipe channel 1113, the first hydraulic pipe channel 3113, and the second hydraulic pipe channel 3127. Furthermore, the first inspection channel 3111 may be connected to the central inspection channel 1112, and the second inspection channel 3121 may be connected to the central inspection channel 1112, facilitating equipment maintenance. The first cable channel 3112 can be connected to the central cable channel 1111, and the second cable channel 3126 can be connected to the central cable channel 1111, so that the fan 200 can supply power to electrical equipment such as water pumps through the cables in the central cable channel 1111, the first cable channel 3112 and the second cable channel 3126.

[0077] In some embodiments, as Figure 4 and Figure 5As shown, the side column 12 may have a side column cavity 121, and the side column cavity 121 has a first side compartment 1213 for placing equipment such as a water pump and a second side compartment 1214 for applying ballast, and the first side compartment 1213 may be located above the second side compartment 1214, and at the same time, the first side compartment 1213 may be located above the water surface, and the second side compartment 1214 may be located below the water surface. Among them, multiple first side partitions 1215 can be arranged at intervals along the axial direction of the side column 12 in the first side compartment 1213, that is, the first side partitions 1215 can be two, three or more, and each first side partition 1215 can be distributed at intervals along the axial direction of the side column 12 to separate the first side compartment 1213 into three, four or more first side sub-compartments 1216, and the first side sub-compartments 1216 can be one of the equipment compartment and the empty compartment, that is, the first side sub-compartment 1216 can be an equipment compartment for placing equipment such as water pumps, or it can be an empty compartment. A plurality of second side partitions 1217 may be arranged in the second side chamber 1214 along the axial intervals of the side column 12, that is, the second side partitions 1217 may be two, three or more, and each second side partition 1217 may be distributed along the axial intervals of the side column 12 to separate the second side chamber 1214 into three, four or more second side compartments 1218, and the second side compartment 1218 may be one of a ballast tank and an empty tank, that is, the second side compartment 1218 may be a ballast tank capable of applying load, or it may be an empty tank.

[0078] In some embodiments, as Figure 4 and Figure 5 As shown, a side cable channel 1211 and a side inspection channel 1212 sleeved outside the side cable channel 1211 can be provided within the side column cavity 121. The first inspection channel 3111 can communicate with the side inspection channel 1212, and the second inspection channel 3121 can communicate with the side inspection channel 1212 to facilitate equipment inspection and maintenance. Furthermore, the first cable channel 3112 can communicate with the side cable channel 1211, and the second cable channel 3126 can communicate with the side cable channel 1211, allowing the fan 200 to power electrical equipment such as water pumps via the cables within the central cable channel 1111, the first cable channel 3112, the second cable channel 3126, and the side cable channel 1211.

[0079] In some embodiments, as Figure 4 and Figure 5As shown, the central inspection channel 1112 can be located at the central axis of the central column 11, and a first spiral ladder 1118 is provided on the inner wall of the central inspection channel 1112 for easy maintenance. The side inspection channel 1212 can be located at the central axis of the side column 12, and a second spiral ladder 1219 is provided on the inner wall of the side inspection channel 1212 for easy maintenance. At the same time, to facilitate the maintenance of the equipment in the central column 11 and the side column 12, the central inspection channel 1112 and the side inspection channel 1212 can be respectively provided with watertight doors that can communicate with each compartment. This can facilitate the maintenance of the equipment in the central column 11 and the side column 12 while ensuring the sealing of each compartment in the central column 11 and the side column 12.

[0080] In some embodiments, as Figure 3 and Figure 4 As shown, the float member 20 can adopt a cylindrical structure, and the float member 20 has a float cavity 21 for applying load, and at the same time, a plurality of float partitions 211 are arranged at intervals along the circumferential direction of the float member 20 in the float cavity 21, that is, the float partitions 211 can be two, three or more to separate the float cavity 21 into two, three or more float compartments 212, and the float compartment 212 can be one of a ballast tank and an empty tank, that is, the float compartment 212 can be a ballast tank that can apply load, or it can be an empty tank.

[0081] In some embodiments, the float member 20 may include a plurality of curved side panels and a float cover disposed at both ends of the curved side panels. The curved side panels and the float cover may be prefabricated and integrally formed, and one of the two float covers may have a through hole having a diameter equal to the outer diameter of the side column 12, so that the side column 12 can be mounted at the through hole in the float cover.

[0082] In some embodiments, the float member 20 can have a diameter of 25 m and a height of 4 m. Furthermore, the float member 20 is composed of four curved side panels, one cover panel, and one cover panel with a central through-hole. The curved side panels and cover panel of the float member 20 can be laser welded and coated with epoxy resin to ensure the watertightness of each compartment within the float member 20. Furthermore, a DN400 filling valve can be installed at the top of each ballast compartment, and a DN500 drain valve can be installed at the bottom of each ballast compartment. This allows the buoyancy of the float member 20 to be adjusted by controlling the ballast water within the float member 20.

[0083] In some embodiments, the center column 11 can be composed of one or more sections of sub-center columns, that is, the sub-center columns can be one, two or more, and the specific number can be determined according to actual needs. Among them, the sub-center columns can include a plurality of arc-shaped center side panels and center cover plates, and the arc-shaped center side panels and center cover plates can be prefabricated and formed into one piece, and each arc-shaped center side panel and center cover plate can be fixed by welding. At the same time, the side columns 12 can be composed of one or more sections of sub-side columns, that is, the sub-side columns can be one, two or more, and the specific number can be determined according to actual needs. Among them, the sub-side columns can include a plurality of arc-shaped side panels and side cover plates, and the arc-shaped side panels and side cover plates can be prefabricated and formed into one piece, and each arc-shaped side panel and side cover plate can be fixed by welding.

[0084] In some embodiments, the center column 11 can be composed of 8 sub-center columns, and the height of each sub-center column can be 4 meters. At the same time, the sub-center column can be composed of 4 arc-shaped center side panels and a center cover plate. In addition, a sleeve with a diameter of 1.0m and a wall thickness of 30mm can be pre-buried at the central axis position of the center column 11 as a central cable channel 1111 to facilitate the installation of cables. At the same time, the first cable channel 3112 and the second cable channel 3126 can be located 300mm away from the upper wall surface of the first connecting member 311 and the second connecting member 312, respectively, and connected to the side cable channel 1211 of the side column 12, and converge into the cable transition compartment of the center column 11.

[0085] In some embodiments, the side column 12 can be composed of nine sections, each 4 meters high. The side columns can also be composed of four curved side panels and a side cover. Furthermore, a 1.0-meter-diameter, 30-mm-thick casing can be pre-buried at the center axis of the side column 12 as a side cable channel 1211 to facilitate cable routing.

[0086] In some embodiments, two adjacent sections of the central column 11 can be connected by flanges, and two adjacent sections of the side columns 12 can be connected by flanges. The thickness of the flange can be 80 mm, and the outer diameter of the flange can be 17 mm. At the same time, the top of the float 20 is connected to the bottom of the side column 12 via a locking flange and fastened using first fasteners such as bolts made of shape memory alloy material. The first fasteners can be arranged in two circles along the axial direction of the side column 12, with 120 fasteners arranged in each circle to ensure the reliability of the connection between the float 20 and the side column 12. Furthermore, a flange interface for connecting the tower of the wind turbine 200 can be provided at the top of the central column 11 to facilitate the connection of the wind turbine 200 to the central column 11. A first connection base can be provided at a height of 5m from the top of the center column 11 to facilitate connection with the first connection member 311. The dimensions of the first connection base can be 6m in width, 0.7m in length, and 2m in height. A second connection base can be provided at a height of 1m from the bottom of the center column 11 to facilitate connection with the second connection member 312. The dimensions of the second connection base can be 6m in width, 0.5m in length, and 2m in height. At the same time, embedded flanges can be provided at the positions of the first and second connection bases. The embedded flanges can be 6m in width, 2m in height, and 60mm in thickness. They are fastened with second fasteners such as bolts made of shape memory alloy material, with the spacing between the second fasteners being 150mm. It should be noted that in the above embodiments, sealing gaskets are used between the flanges and the structural wall to ensure the watertightness of the structure.

[0087] In some embodiments, as Figure 1 As shown, the offshore wind turbine platform 100 may also include a mooring system 40, which may include an anchor chain 41. One end of the anchor chain 41 may be connected to the side column 12, and the other end of the anchor chain 41 may be connected to an anchor point on the seabed. Multiple anchor chains 41 may be connected to each side column 12 to ensure the stability of the offshore wind turbine platform 100. The anchor chains 41 may be in the form of a catenary, i.e., a naturally drooping flexible anchor chain. This allows the anchor chains 41 to balance their own weight and buoyancy, absorbing wave energy and reducing the impact force on the offshore wind turbine platform 100.

[0088] The offshore wind turbine platform 100 disclosed in the embodiment of the present application can mount a wind turbine on a central column 11 of a support assembly 10. A plurality of side columns 12 can be spaced apart around the central column 11. A float 20 is provided at the bottom of each side column 12. The float 20 is connected to the side columns 12 via a first fastener, and both the float 20 and the side columns 12 can be connected to the central column 11 via a connector 31. The float 20, the side columns 12, the central column 11, and the connector 31 are connected via a second fastener, thereby providing buoyancy support for the offshore wind turbine platform 100 via the float 20. The support assembly 10, the connector assembly 30, and the float 20 are all prefabricated, and the first and second fasteners are made of shape memory alloy.

[0089] The offshore wind turbine platform 100 disclosed in the embodiments of the present application utilizes prefabricated support assembly 10, connection assembly 30, and float 20 to facilitate their transportation and installation. Compared to monolithic structures, this reduces reliance on large ports and improves the ease of installation of the offshore wind turbine platform 100. Furthermore, the first and second fasteners, made of shape-memory alloy, connect the float 20, side columns 12, center column 11, and connection member 31. These fasteners can enter a dynamic preload mode when powered on to compensate for the attenuation of the preload force caused by dynamic wave loads, thereby ensuring the stability of the offshore wind turbine platform 100.

[0090] The embodiment of the present application further discloses an offshore wind power platform operation and maintenance system, which is used for the offshore wind power platform 100 disclosed in the above embodiment. Therefore, it has all the technical effects of the above offshore wind power platform 100, which will not be repeated here.

[0091] The offshore wind power platform operation and maintenance system may include detection elements, and the detection elements may include pressure sensors, humidity sensors, and fiber grating sensors. The pressure sensor and humidity sensor may be both installed on the floating member 20 to detect the watertightness of the floating member 20, and the fiber grating sensor may be installed at the joint position of the floating member 20, the connector 31, and the support assembly 10 to monitor structural deformation such as structural strain and crack initiation through the fiber grating sensor. When the pressure sensor and humidity sensor detect a leak in the floating member 20, the high-pressure glue injection pump can be started to inject repair glue into the leak point for repair; when the fiber grating sensor detects damage, if the damage value does not exceed the preset range, the high-pressure glue injection pump can be started to inject repair glue into the damaged position for repair; if the damage value exceeds the preset range, the spare parts can be transported to the target sea area by dispatching a maintenance ship to replace the damaged parts.

[0092] In some embodiments, glue storage tanks are located within the first central chamber 1114 above the waterline of the central column 11 and the first side chamber 1213 above the waterline of the side column 12. Conduit grooves are pre-buried along the inner walls of the central column 11 and the side columns 12, and are installed in the same grooves as the fiber grating sensors. Glue injection points are also located at the joints along the central column 11, side columns 12, float 20, and connector 31, with glue heads positioned every 1.5 meters to receive signals from the fiber grating sensors in real time and trigger glue injection.

[0093] The offshore wind power platform operation and maintenance system may also include a prediction platform, which can be calibrated based on real-time data from detection elements to predict the fatigue life of structural components.

[0094] In some embodiments, the prediction platform can predict the fatigue life of structural components by building a platform dynamic response model based on ANSYS and AQWA to achieve calibration based on real-time data.

[0095] like Figure 10 As shown, the present embodiment also discloses a method for constructing an offshore wind power platform. This method, which addresses the offshore wind power platform 100 disclosed in the above embodiment, combines all the technical advantages of the offshore wind power platform 100 described above and will not be further described herein. The offshore wind power platform construction method may include step S100 of prefabricating platform components, step S200 of transporting the platform components, step S300 of assembling the platform components, and step S400 of installing the platform. The offshore wind power platform construction method disclosed in the embodiment of the present application will be specifically explained and illustrated below.

[0096] Step S100, prefabricating platform components;

[0097] Among them, the platform component may include a central column 11, a side column 12, a floating member 20 and a connecting member 31. The central column 11, the side column 12, the floating member 20 and the connecting member 31 are prefabricated in pieces. The central column 11 may be composed of multiple arc-shaped central side panels and a central cover plate. The side column 12 may be composed of multiple arc-shaped side panels and side cover plates. The floating member 20 may be composed of multiple floating curved side panels and floating cover plates arranged at both ends of the floating curved side panels, and a through hole is opened in one of the two floating cover plates. At the same time, the connecting member 31 may be composed of multiple sub-connecting side panels and sub-connecting cover plates, and each sub-connecting side panel is connected to the sub-connecting cover plate by a hinge, that is, each sub-connecting side panel is connected by a hinge, each sub-connecting cover plate is connected by a hinge, and the sub-connecting side panel and the sub-connecting cover plate are connected by a hinge.

[0098] The curved side and top panels of the columns, along with the curved side, top, and bottom panels of the pontoon, were transported to the dock via containers and hoisted onto the assembly platform by a gantry crane. Laser trackers were used to guide the alignment of the panels, and robotic welding was performed. Cable conduits and ballast pumps were pre-installed inside the columns and pontoons, and the pipes were connected via flanges. Each column segment was connected via flanges, and coaxiality was calibrated using a total station. Coarse positioning was achieved by aligning the bottom of the side columns with the reserved through-holes on the top of the pontoon. A laser rangefinder provided real-time feedback on position deviations and fine-tuned the verticality of the side columns. The side columns and pontoon were then connected via locking flanges. The foldable box-shaped structural panels were deployed by hydraulic deployment arms. Once fully deployed, hydraulic cylinders drove tapered pins into the positioning holes, simultaneously tightening the sealing strips and eliminating gaps in the joints. After assembly of the center column, side columns, pontoon, and box-shaped structure, a watertightness test was performed. Compressed air (0.15 MPa) was injected into each component and maintained for 30 minutes. A pressure drop of less than 5% was considered acceptable.

[0099] Step S200, transporting platform components;

[0100] The platform assembly is transported to the installation area. The central column 11, side columns 12 and float 20 can be transported in a nested stacking manner, and the connector 31 can be transported in a foldable manner, which can effectively reduce the transport volume and improve the transport efficiency.

[0101] Step S300, assembling platform components;

[0102] The curved center side panels, center cover panels, curved side panels, side cover panels, float curved side panels, and float cover panels are transported to the dock via containers and hoisted onto the assembly platform by a gantry crane. Laser trackers are used to guide the alignment of the segments, and robotic welding is employed to form the center column 11, side columns 12, and float member 20. Cable sheathing and ballast water pumps are pre-installed within the center column 11, side columns 12, and float member 20, and the various pipelines are connected via flanges. The sections of the center column 11 and side columns 12 can be connected via flanges and calibrated using a total station to ensure coaxiality. Rough positioning is achieved by aligning the bottom of the side column 12 with the reserved through-holes at the top of the float member 20. A laser rangefinder is used to provide real-time feedback on position deviations and fine-tune the verticality of the side column 12. The side column 12 and float member 20 are connected via snap-fit ​​flanges and secured securely with a first fastener to form the float support member. The connecting member 31 can be pushed and expanded by the first hydraulic cylinder 3114 and the second hydraulic cylinder 3128 and drive the spring hydraulic tapered pin to insert into the positioning hole, thereby simultaneously pressing the sealing strip to eliminate the joint gap.

[0103] Step S400, installing the platform;

[0104] The offshore wind power platform 100 is decomposed into three groups: the central column 11 and the wind turbine 200, the floating support, and the connector 31. Each group is transported separately to the target sea area by a towing ship to reduce towing resistance and size restrictions. During installation, the three floating support members are adjusted to the same horizontal plane through the ballast system to ensure the installation reference of the connector 31. A dynamic positioning vessel is used to assist in the precise positioning of each column. An underwater robot carrying a guide frame is used to guide the connector 31 to connect with the embedded flanges at the first and second connection bases on the central column 11, and the interface is locked by a second fastener. At the same time, based on the preset stability parameters of the offshore wind power platform 100, the ballast system can automatically distribute the water volume of each compartment so that the offshore wind power platform 100 sinks to the working draft height. It should be noted that after the offshore wind power platform 100 is installed, the tower of the wind turbine 200 can be connected to the flange interface of the central column 11 to complete the assembly of the entire offshore wind power system.

[0105] like Figure 11 As shown, step S301 of watertightness testing may be performed between step S300 of assembling the platform components and step S400 of installing the platform. In step S301 of the watertightness testing, compressed air at 0.15 MPa is injected into the interior of the buoyancy support and the connector 31 and maintained for a preset time of 30 minutes. If the pressure drop rate is less than a preset value of 5%, the buoyancy support and the connector 31 are deemed to be watertight.

[0106] The terms "first," "second," and so on in the specification, claims, and drawings of this application are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements and may include steps or elements that are not listed.

[0107] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An offshore wind power platform, characterized in that: include: A support assembly (10), the support assembly (10) comprising a central column (11) and a plurality of side columns (12) spaced apart around the central column (11), the central column (11) being used to support the fan (200); A float member (20), the float member (20) is used to provide ballast, and the float member (20) is arranged at the bottom of the side column (12), and the float member (20) and the side column (12) are connected and fixed by a first fastener; A connecting assembly (30), wherein the connecting assembly (30) is multiple and is used to connect the central column (11) and the side column (12), and the connecting assembly (30) includes at least two connecting members (31), and both ends of at least one of the connecting members (31) are used to connect the side column (12) and the central column (11) through a second fastener, and both ends of at least one of the connecting members (31) are used to connect the floating member (20) and the central column (11) through the second fastener; The support assembly (10), the connection assembly (30), and the float member (20) are all prefabricated, and the first fastener and the second fastener are both made of shape memory alloy material.

2. The offshore wind power platform according to claim 1, characterized in that: The connecting member (31) comprises a side connecting plate and a connecting cover plate arranged in pairs, the side connecting plate comprises a plurality of sub-connecting side plates, the connecting cover plate comprises a plurality of sub-connecting cover plates, the sub-connecting cover plates and the sub-connecting side plates are prefabricated as one piece, and each of the sub-connecting side plates is connected to the sub-connecting cover plates via a hinge.

3. The offshore wind power platform according to claim 2, characterized in that: The connecting member (31) includes a first connecting member (311) and a second connecting member (312), wherein the first connecting member (311) is connected between the side column (12) and the center column (11), and the second connecting member (312) is connected between the floating member (20) and the center column (11), and the first connecting member (311) has a first inspection channel (3111) for inspection and maintenance, and the second connecting member (312) has a second inspection channel (3121) for inspection and maintenance and a connecting cavity (3122) for applying a load.

4. The offshore wind power platform according to claim 3, characterized in that: The connecting cavity (3122) is provided with connecting horizontal partitions (3123) distributed along a first direction and connecting vertical partitions (3124) distributed along a second direction. The connecting horizontal partitions (3123) and the connecting vertical partitions (3124) are arranged perpendicular to each other to separate the connecting cavity (3122) into a plurality of connecting compartments (3125). The connecting compartments (3125) are one of the ballast tank, the equipment compartment and the empty compartment.

5. The offshore wind power platform according to claim 3, characterized in that: The first connecting member (311) further comprises a first cable channel (3112) for passing a cable and a first hydraulic pipe channel (3113) for passing a hydraulic pipe, and a plurality of first hydraulic cylinders (3114) are arranged in the first hydraulic pipe channel (3113), and the first hydraulic cylinders (3114) are arranged at the segmented interface of the first connecting member (311); The second connecting member (312) also has a second cable channel (3126) for passing the cable and a second hydraulic pipe channel (3127) for passing the hydraulic pipe. The second cable channel (3126) is located above the second inspection channel (3121), and a plurality of second hydraulic cylinders (3128) are arranged in the second hydraulic pipe channel (3127). The second hydraulic cylinders (3128) are arranged at the segmented interface of the second connecting member (312).

6. The offshore wind power platform according to claim 5, characterized in that: The central column (11) has a central column cavity (111), and the side columns (12) have side column cavities (121); The central column cavity (111) is provided with a central cable channel (1111) for passing cables, a central inspection channel (1112) for inspection and maintenance, and a central hydraulic pipe channel (1113) for passing hydraulic pipes. The central inspection channel (1112) is sleeved on the outside of the central cable channel (1111), and the central hydraulic pipe channel (1113) is communicated with the first hydraulic pipe channel (3113) and the second hydraulic pipe channel (3127), respectively. The side column cavity (121) is provided with a side cable channel (1211) for passing the cable and a side inspection channel (1212) for inspection and maintenance, which is sleeved on the outside of the side cable channel (1211). The first inspection channel (3111) is communicated with the central inspection channel (1112) and the side inspection channel (1212) respectively. The second inspection channel (3121) is communicated with the central inspection channel (1112) and the side inspection channel (1212) respectively. The first cable channel (3112) is communicated with the central cable channel (1111) and the side cable channel (1211) respectively. The second cable channel (3126) is communicated with the central cable channel (1111) and the side cable channel (1211) respectively.

7. The offshore wind power platform according to claim 6, characterized in that: The central column cavity (111) has a first central compartment (1114) and a second central compartment (1115) for applying ballast, the first central compartment (1114) is located above the second central compartment (1115), the first central compartment (1114) is one of an equipment compartment and an empty compartment, and a plurality of central partitions (1116) are arranged in the second central compartment (1115) along the circumferential direction of the central column (11) to separate the second central compartment (1115) into a plurality of central sub-compartments (1117), the central sub-compartments (1117) are one of a ballast compartment and an empty compartment; and / or, The side column cavity (121) has a first side compartment (1213) for placing equipment and a second side compartment (1214) for applying ballast, the first side compartment (1213) being located above the second side compartment (1214), a plurality of first side partitions (1215) being arranged in the first side compartment (1213) along the axial direction of the side column (12) to separate the first side compartment (1213) into a plurality of first side sub-compartments (1216), the first side sub-compartments (1216) being one of an equipment compartment and an empty compartment, and a plurality of second side partitions (1217) being arranged in the second side compartment (1214) along the axial direction of the side column (12) to separate the second side compartment (1214) into a plurality of second side sub-compartments (1218), the second side sub-compartments (1218) being one of a ballast compartment and an empty compartment.

8. The offshore wind power platform according to claim 7, characterized in that: The central maintenance passage (1112) is located at the central axis of the central column (11), and a first spiral ladder (1118) is provided on the inner wall of the central maintenance passage (1112) for easy maintenance; and / or, The side inspection passage (1212) is located at the central axis of the side column (12), and a second spiral ladder (1219) is provided on the inner wall of the side inspection passage (1212) for facilitating inspection.

9. The offshore wind power platform according to claim 1, characterized in that: The float member (20) has a float cavity (21) for applying a load, and a plurality of float partitions (211) are arranged in the float cavity (21) at intervals along the circumferential direction of the float member (20) to separate the float cavity (21) into a plurality of float compartments (212), wherein the float compartments (212) are either ballast tanks or empty tanks.

10. The offshore wind power platform according to claim 1, characterized in that: The float member (20) comprises a plurality of float curved side panels and float cover panels arranged at both ends of the float curved side panels, the float curved side panels and the float cover panels are prefabricated as one piece, and one of the two float cover panels is provided with a through hole, the aperture of the through hole being equal to the outer diameter of the side column (12).

11. The offshore wind power platform according to claim 1, characterized in that: The central column (11) comprises one or more sub-central columns, and the sub-central columns comprise a plurality of arc-shaped central side panels and a central cover plate, the arc-shaped central side panels and the central cover plate are prefabricated and integrally formed, and each of the arc-shaped central side panels is connected to the central cover plate by welding; and / or, The side column (12) comprises one or more side column sections, and the side column sections comprise a plurality of arcuate side panels and side cover panels, the arcuate side panels and the side cover panels are prefabricated and integrally formed, and each of the arcuate side panels is connected to the side cover panels by welding.

12. The offshore wind power platform according to claim 1, characterized in that: The invention also includes a mooring system (40), wherein the mooring system (40) includes an anchor chain (41), one end of the anchor chain (41) is connected to the side column (12), and the other end of the anchor chain (41) is used to connect to an anchor point on the seabed, each side column (12) is connected to a plurality of the anchor chains (41), and the anchor chains (41) are in the form of a catenary.

13. An offshore wind power platform operation and maintenance system, used for the offshore wind power platform (100) according to any one of claims 1 to 12, characterized in that: The device comprises a detection element, wherein the detection element comprises a pressure sensor, a humidity sensor and a fiber Bragg grating sensor. The pressure sensor and the humidity sensor are both arranged on the floating body (20). The pressure sensor and the humidity sensor are used to detect the sealing of the floating body (20). The fiber Bragg grating sensor is arranged at the joint position of the floating body (20), the connecting member (31) and the supporting assembly (10). The fiber Bragg grating sensor is used to monitor structural deformation. When the pressure sensor and the humidity sensor detect that the float member (20) is leaking, repairing the leak is performed by injecting repair glue into the leak point; When the fiber grating sensor detects damage, if the damage value does not exceed a preset range, the damaged part is repaired by injecting repair glue into the damaged part; if the damage value exceeds the preset range, the damaged part is replaced.

14. The offshore wind power platform operation and maintenance system according to claim 13, characterized in that: The system also includes a prediction platform, which can be calibrated according to real-time data detected by the detection element to predict the fatigue life of the structure.

15. A method for constructing an offshore wind power platform, for the offshore wind power platform (100) according to any one of claims 1 to 12, characterized in that: Including steps: A prefabricated platform assembly, the platform assembly comprising the central column (11), the side columns (12), the floating member (20) and the connecting member (31), wherein the central column (11), the side columns (12), the floating member (20) and the connecting member (31) are prefabricated in pieces, the central column (11) comprising a plurality of arcuate central side panels and a central cover panel, the side columns (12) comprising a plurality of arcuate side panels and a side cover panel, the floating member (20) comprising a plurality of floating body arcuate side panels and floating body cover panels arranged at both ends of the floating body arcuate side panels, and one of the two floating body cover panels is provided with a through hole, the connecting member (31) comprising a plurality of sub-connecting side panels and sub-connecting cover panels, and each of the sub-connecting side panels is connected to the sub-connecting cover panels via a hinge; Transporting the platform assembly to an installation area, wherein the central column (11), the side columns (12) and the floating body (20) are transported in a nested stacking manner, and the connecting member (31) is transported in a folded manner; Assembling the platform assembly, welding each of the arc-shaped central side panels and the central cover to form the central column (11), welding each of the arc-shaped side panels and the side cover to form the side columns (12), welding each of the float arc-shaped side panels and the float cover to form the float member (20), and pre-installing cable pipes and ballast pump groups in the central column (11), the side columns (12) and the float member (20), and connecting the side columns (12) and the float member (20) through the first fastener to form a float support member, and unfolding and fixing the connecting member (31); The platform is installed, and the central column (11), the floating support member and the connecting member (31) are transported to the target sea area, and the draft of the side columns (12) and the floating member (20) are adjusted to the same horizontal plane by the ballast pump group, and the side columns (12) and the floating member (20) are respectively connected to the central column (11) through the connecting member (31), and the connection positions of the side columns (12), the floating member (20), the central column (11) and the connecting member (31) are locked by the second fastener.

16. The offshore wind power platform construction method according to claim 15, characterized in that: The steps of assembling the platform components and installing the platform are further comprised of: The watertightness test is performed by injecting compressed air into the interior of the floating support and the connecting member (31) and maintaining the pressure for a preset time. If the pressure drop rate is less than a preset value, the watertightness of the floating support and the connecting member (31) is qualified.

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