A design method and device for a preset eccentric suction cylinder foundation for offshore wind power

Abstract

The present application discloses a design method and device for a preset eccentric suction cylinder foundation for offshore wind power, wherein the method includes: obtaining environmental information of the wind farm and characteristic information of the wind turbine system; generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and characteristic information; obtaining the vertical load of the suction cylinder foundation; determining the load eccentricity rose diagram according to the vertical load and lateral load rose diagrams; adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum; determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram. The design method and device for a preset eccentric suction cylinder foundation for offshore wind power of the present application pre-deviates the wind turbine tower from the center position of the foundation, offsets the eccentricity generated by the lateral load of the wind turbine, increases the effective bearing area and effective width of the single-tube suction cylinder foundation, and improves the in-situ load-bearing efficiency and reliability of the single-tube suction cylinder foundation.

Description

Technical Field

[0001] The present application relates to the technical field of wind power foundations, and in particular to a design method and device for a preset eccentric suction cylinder foundation for offshore wind power. Background Art

[0002] Offshore wind power (hereinafter referred to as "offshore wind") is an important strategic emerging industry in my country and an important tool for my country to implement the "dual carbon" goal. In the offshore wind power system, the foundation is an important component unit and also the most marine engineering-specific component of offshore wind power. The development of new offshore wind foundations is an important direction for my country's current offshore wind power "cost reduction and efficiency improvement".

[0003] Offshore wind development usually uses pile foundations or suction cylinders as wind turbine foundations. Among them, the pile foundation is usually an open steel pipe pile, which is penetrated to the designed depth in the seabed by piling, while the suction cylinder foundation adopts an inverted cylindrical thin-walled shell structure. It is installed and penetrated by forming a negative pressure in the compartment of the cylinder through its own weight and pump skids to pump water. After it is in place, it can also use the negative pore water pressure effect in the soil to effectively resist the storm load in the upward direction. When the site conditions are suitable, the suction cylinder foundation generally has technical advantages such as friendly construction environment, simple installation, and superior in-situ performance. Depending on the upper load, water depth and geological conditions, the suction cylinder foundation can be in the form of a single cylinder or multiple cylinders (usually three or four cylinders). In places with shallow water depths, a single-cylinder suction cylinder can ensure the rigidity of the wind turbine system, and the structural form is simpler, which has better competitive advantages than multi-cylinder foundations.

[0004] For the single-tube suction cylinder foundation, in practice, the wind turbine tower 100 is usually placed at the geometric center of the top of the single-tube suction cylinder 200 (i.e., the center of the circle 0, such as Figure 1 As shown in the figure, it forms an axisymmetric support structure together with the suction tube foundation. However, since the horizontal load of the sea breeze system (including wind load and wave current load) is large and it is a tall system with a corresponding long lever arm, the overturning load generated at the top of the foundation is large. In addition, the vertical (gravity) load of the wind turbine system itself is relatively small, resulting in a large load eccentricity on the single-tube suction tube foundation. A large eccentricity will significantly reduce the effective bearing area of ​​the foundation, thereby reducing the bearing capacity of the foundation. In other words, the total upper load borne by the suction tube foundation is an asymmetric eccentric load. The contradiction between the axisymmetric structural form and the eccentric load reduces the effectiveness of the conventional single-tube foundation. Summary of the invention

[0005] The purpose of this application is to solve one of the above-mentioned technical problems at least to a certain extent.

[0006] To this end, the first purpose of this application is to propose a design method for a preset eccentric suction cylinder foundation for offshore wind power, which can increase the effective bearing area and effective width of the single-cylinder suction cylinder foundation in the in-situ state, improve the in-situ bearing efficiency and reliability of the single-cylinder suction cylinder foundation, and achieve the purpose of reducing the main size of the foundation and reducing the construction and installation costs of the offshore wind foundation.

[0007] To achieve the above objectives, the first embodiment of the present application proposes a design method for a preset eccentric suction cylinder foundation for offshore wind power, including:

[0008] Obtain environmental information of the wind farm and characteristic information of the wind turbine system;

[0009] Generate a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information;

[0010] Obtaining the vertical load of the suction cylinder foundation;

[0011] Determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagram;

[0012] Adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum;

[0013] The connection position between the suction cylinder foundation and the wind turbine tower is determined according to the adjusted load eccentricity rose diagram.

[0014] The environmental information includes at least one of the speed, direction, and duration of wind, waves, and currents under operating conditions and extreme conditions;

[0015] The characteristic information includes at least one of lateral load, vertical load, bending moment and torque generated by the wind turbine under different working conditions.

[0016] Optionally, generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information includes:

[0017] The horizontal load F of the suction cylinder foundation is calculated according to the environmental information and the characteristic information. H and overturning moment M;

[0018] According to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

[0019] Optionally, determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagrams includes:

[0020] The load eccentricity rose diagram is obtained according to the eccentricity formula e=M / Fv, wherein e is the eccentricity, M is the overturning moment, and Fv is the vertical load.

[0021] Optionally, adjusting the load eccentricity rose diagram includes:

[0022] Determine the load direction with the largest eccentricity according to the load eccentricity rose diagram;

[0023] The preset active eccentricity e' is moved in the opposite direction to the load direction with the largest eccentricity to obtain an adjusted load eccentricity rose diagram, so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum.

[0024] Optionally, after determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram, the method further includes:

[0025] The connection locations are performance verified based on design standard specifications.

[0026] Optionally, the method further includes:

[0027] After the performance is verified, the physical suction cylinder foundation is constructed and installed according to the described connection position.

[0028] The design method of the preset eccentric suction cylinder foundation of offshore wind power in the embodiment of the present application is to preset the deviation of the wind turbine tower from the center position of the foundation, thereby fully or partially offsetting the eccentricity caused by the lateral load of the wind turbine, thereby increasing the effective bearing area and effective width of the single-cylinder suction cylinder foundation in the in-situ state, improving the in-situ load-bearing efficiency and reliability of the single-cylinder suction cylinder foundation, and achieving the purpose of reducing the main size of the foundation and reducing the construction and installation costs of the offshore wind foundation.

[0029] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a design device for a preset eccentric suction cylinder foundation of offshore wind power, the device comprising:

[0030] The first acquisition module is used to acquire environmental information of the wind farm and characteristic information of the wind turbine system;

[0031] A generating module, used for generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information;

[0032] A second acquisition module is used to acquire the vertical load of the suction cylinder foundation;

[0033] A determination module, used to determine a load eccentricity rose diagram according to the vertical load and the lateral load rose diagram;

[0034] An adjustment module, used for adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum;

[0035] The design module is used to determine the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

[0036] The environmental information includes at least one of the speed, direction, and duration of wind, waves, and currents under operating conditions and extreme conditions;

[0037] The characteristic information includes at least one of lateral load, vertical load, bending moment and torque generated by the wind turbine under different working conditions.

[0038] Optionally, the generating module is used to:

[0039] The horizontal load F of the suction cylinder foundation is calculated according to the environmental information and the characteristic information. H and overturning moment M;

[0040] According to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

[0041] Optionally, the determining module is used to:

[0042] The load eccentricity rose diagram is obtained according to the eccentricity formula e=M / Fv, wherein e is the eccentricity, M is the overturning moment, and Fv is the vertical load.

[0043] Optionally, the adjustment module is used to:

[0044] Determine the load direction with the largest eccentricity according to the load eccentricity rose diagram;

[0045] The preset active eccentricity e' is moved in the opposite direction to the load direction with the largest eccentricity to obtain an adjusted load eccentricity rose diagram, so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum.

[0046] Optionally, the device further comprises:

[0047] The verification module is used to perform performance verification on the connection position based on design standards and specifications after determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

[0048] Optionally, the device further comprises:

[0049] The installation module is used to construct and install the physical suction cylinder foundation according to the connection position after the performance verification is passed.

[0050] The design device of the preset eccentric suction cylinder foundation of offshore wind power in the embodiment of the present application, by pre-deflecting the wind turbine tower from the center position of the foundation, thereby fully or partially offsetting the eccentricity caused by the lateral load of the wind turbine, thereby increasing the effective bearing area and effective width of the single-cylinder suction cylinder foundation in the in-situ state, improving the in-situ load-bearing efficiency and reliability of the single-cylinder suction cylinder foundation, and achieving the purpose of reducing the main size of the foundation and reducing the construction and installation costs of the offshore wind foundation.

[0051] To achieve the above-mentioned objectives, the third aspect embodiment of the present application proposes an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the design method of the preset eccentric suction cylinder foundation for offshore wind power described in the first aspect embodiment of the present application is implemented.

[0052] To achieve the above objectives, the fourth aspect of the present application proposes a computer-readable storage medium, and when the computer program is executed by a processor, it implements the design method of the preset eccentric suction cylinder foundation of offshore wind power as described in the first aspect of the present application.

[0053] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural schematic diagram of the suction cylinder foundation of the prior art;

[0055] Figure 2 This is a flow chart of a design method for a preset eccentric suction cylinder foundation of an offshore wind power plant according to an embodiment of the present application;

[0056] Figure 3 is a load eccentricity rose diagram of an embodiment of the present application;

[0057] Figure 4 is an adjusted load eccentricity rose diagram of one embodiment of the present application;

[0058] Figure 5 It is a flow chart of a design method of a preset eccentric suction cylinder foundation of offshore wind power in another embodiment of the present application;

[0059] Figure 6 This is a flow chart of a design method for a preset eccentric suction cylinder foundation of offshore wind power according to another embodiment of the present application;

[0060] Figure 7 It is a schematic diagram of suction cylinder load;

[0061] Figure 8 It is the schematic diagram of equivalent load of suction cylinder;

[0062] Fig. 9 It is a schematic diagram of the effective bearing area of ​​the suction cylinder foundation under eccentric load;

[0063] Fig.10 This is a structural schematic diagram of a preset eccentric suction cylinder foundation for offshore wind power according to an embodiment of the present application;

[0064] Fig.11 It is a structural schematic diagram of a preset eccentric suction cylinder foundation of offshore wind power in another embodiment of the present application;

[0065] Fig.12 It is a structural schematic diagram of a preset eccentric suction cylinder foundation for offshore wind power according to another embodiment of the present application. DETAILED DESCRIPTION

[0066] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0067] The present invention is further described in detail below in conjunction with specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed by the present invention.

[0068] The following describes the design method and device of the preset eccentric suction cylinder foundation of offshore wind power in the embodiment of the present application with reference to the accompanying drawings.

[0069] Figure 2 It is a flow chart of a design method of a preset eccentric suction cylinder foundation for offshore wind power according to one embodiment of the present application.

[0070] like Figure 2 As shown in the figure, the design method of the preset eccentric suction cylinder foundation for offshore wind power includes:

[0071] S1, obtaining the environmental information of the wind farm and the characteristic information of the wind turbine system.

[0072] The environmental information includes the speed, direction, duration, etc. of wind, waves, and currents under operating conditions and extreme conditions;

[0073] The characteristic information includes the lateral load, vertical load, bending moment, torque, etc. generated by the wind turbine under different working conditions.

[0074] S2, generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information.

[0075] Specifically, the horizontal load F of the suction cylinder foundation can be calculated according to the environmental information and the characteristic information using the method specified in the relevant design standards. Hand overturning moment M, then according to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

[0076] S3, obtaining the vertical load of the suction cylinder foundation.

[0077] S4, determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagram.

[0078] Specifically, the load eccentricity rose diagram can be obtained according to the eccentricity formula e=M / Fv. Where e is the eccentricity, M is the overturning moment, and Fv is the vertical load. The generated load eccentricity rose diagram can be as follows: Figure 3 shown.

[0079] S5, adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum.

[0080] Specifically, the load direction with the largest eccentricity can be determined according to the load eccentricity rose diagram, and then the preset active eccentricity e' is moved in the opposite direction to the load direction with the largest eccentricity to obtain the adjusted load eccentricity rose diagram. The adjusted load eccentricity rose diagram can be as follows: Figure 4 shown.

[0081] S6, determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

[0082] The connection position between the suction tube foundation and the fan tower is Figure 4 0' shown in .

[0083] In another embodiment of the present application, Figure 5 As shown, the design method of the preset eccentric suction cylinder foundation for offshore wind power also includes:

[0084] S7, after determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram, perform performance verification on the connection position based on design standards and specifications.

[0085] According to international standards such as DNVGL-RP-C212 (Offshore Soil Mechanics and Geotechnical Engineering) and ISO 19901-4 (Geotechnical and Foundation Design Considerations), the in-situ bearing capacity of the offshore wind foundation is calculated to meet various requirements for the in-situ performance of the foundation.

[0086] In another embodiment of the present application, Figure 6 As shown, the design method of the preset eccentric suction cylinder foundation for offshore wind power also includes:

[0087] S8. After the performance verification is passed, a physical suction cylinder foundation is constructed and installed according to the connection position.

[0088] When constructing a physical suction cylinder foundation, the connection position between the suction cylinder foundation top plate and the wind turbine tower can be partially reinforced. When installing a physical suction cylinder foundation, a counterweight can be used or the sling arrangement can be adjusted to adjust the center of gravity of the suction cylinder foundation during installation.

[0089] The design principle is described in detail below.

[0090] The upper loads borne by the preset eccentric suction cylinder foundation of offshore wind power include vertical loads (mainly the deadweight of the wind turbine system) and wind loads and wave loads generated by the upper structure facilities. For the geotechnical engineering design of the suction cylinder foundation, these loads can be converted into a load combination at the top of the suction cylinder foundation (Fv, F H , M), where Fv is the vertical load, F H is the horizontal load, and M is the overturning moment. In conventional practice, since the wind turbine tower is placed at the center of the top of the single-tube suction tube, the action point of the above load is located at the center of the circle 0 at the top of the suction tube foundation, as shown in Figure 1 shown.

[0091] In order to reduce installation risks, offshore wind turbine suction cylinder foundations usually maintain a short and thick shape, and their depth into the mud is approximately 1 times the diameter of the cylinder base, so their design principle is close to that of a shallow foundation. Under in-situ conditions, the single-cylinder suction cylinder foundation mainly bears overturning moments, horizontal loads and vertical loads, and is essentially a gravity foundation. According to international standards such as DNVGL-RP-C212 (OffshoreSoil Mechanics and Geotechnical Engineering) and ISO 19901-4 (Geotechnical and Foundation Design Considerations), the gravity foundation uses the concepts of effective bearing area (A') and effective foundation width (B') to evaluate the in-situ bearing capacity of the foundation. For a single-cylinder suction cylinder foundation, A' and B' are determined by the eccentricity e generated by the foundation load and the initial radius R of the foundation. The eccentricity e of the foundation load = M / Fv, which is essentially the same as Figure 7 The load combination (Fv, F H , M) is equivalent to Figure 8 The load combination (Fv, FH ). Among them, the distance between point 0 and point 0” is e, which eliminates the overturning moment and simplifies the bearing capacity calculation of the foundation.

[0092] Under the action of eccentric load, the effective bearing area of ​​the suction cylinder foundation will decrease, such as Fig. 9 When the load eccentricity is e, the effective bearing area of ​​the foundation decreases from the initial circular radius R to Fig. 9 The shaded area. When the eccentricity e and the radius R of the suction cylinder foundation are given, the effective bearing area (A') and effective foundation width (B') of the suction cylinder foundation can be calculated according to the following formula:

[0093] Formula 1: Among them, s is half of the effective pressure bearing area, L' is the effective foundation length, and R is the circular radius.

[0094] Formula 2: A′=2s=B′·L′, where:

[0095] Due to the horizontal load F of the sea breeze system H (including wind load and wave current load) is large and is a tall system, corresponding to F H The arm of force is long, so the overturning load M generated on the top of the suction cylinder foundation is large, and the vertical (gravity) load Fv of the fan system itself is relatively small, resulting in a large load eccentricity e on the single-tube suction cylinder foundation. As mentioned above, a large eccentricity will significantly reduce the effective bearing area of ​​the foundation, thereby reducing the bearing capacity of the foundation.

[0096] In a certain sea area, among the upper loads borne by the sea wind foundation, wind load and wave current load are the direct result of the local wind field and wave current environment, and have strong directionality. The horizontal force F generated at the top of the wind turbine foundation H and the overturning moment M is available Figure 3 The rose diagram shown in the figure shows that in the rose diagram, the radial direction represents different directions, while the radius of the concentric circles represents the magnitude of the load. Figure 3 In the given rose diagram, the lateral load (F H , M) is relatively large. For a given wind turbine foundation, the vertical load Fv of the system is mainly composed of its own weight, which remains basically unchanged during operation. According to the formula e=M / Fv, Figure 3 The rose diagram shown can also be considered as the directional distribution of the load eccentricity e.

[0097] In knowing Figure 3 After the rose diagram of the eccentricity e is shown, the position of the wind turbine tower on the top of the suction tube foundation can be optimized in the design stage: the position of the wind turbine tower is moved from the conventional center point to the lateral load (FH , M) Active deviation distance e' in the upwind direction of the main direction, such as Figure 4 As shown, let this preset deviation e' and the eccentricity e generated by the lateral load itself completely or partially offset, so that the load (Fv, F H ) is as close to the center 0 of the suction cylinder as possible, thereby increasing the final effective bearing area and effective width of the suction cylinder foundation, improving the in-situ bearing capacity of the foundation, reducing the main size of the foundation, and reducing the construction and installation costs of the foundation.

[0098] It should be noted that the use of a preset eccentric suction cylinder foundation will change the axial symmetry of the structure of the wind turbine foundation system itself, which requires appropriate adjustments to the structure and installation plan of the cylinder foundation itself. The former includes local structural reinforcement of the connection between the top plate of the cylinder foundation and the tower, and the latter includes the use of counterweights or adjustment of the sling layout to adjust the center of gravity of the cylinder foundation during installation.

[0099] The present invention is based on the design and installation requirements of the single-tube suction tube foundation, fully utilizes the directional distribution characteristics of the foundation load, and pre-deflects the wind turbine tower from the center position of the foundation, thereby fully or partially offsetting the eccentricity caused by the lateral load of the wind turbine, thereby increasing the effective bearing area and effective width of the single-tube suction tube foundation in place, improving the in-situ load-bearing efficiency and reliability of the single-tube suction tube foundation, achieving the purpose of reducing the main size of the foundation and reducing the construction and installation costs of the sea breeze foundation, and providing a more optimized foundation form for sea breeze development.

[0100] In order to implement the above-mentioned embodiment, the present application also proposes a design device for a preset eccentric suction cylinder foundation for offshore wind power.

[0101] Fig.10 It is a structural schematic diagram of a design device for a preset eccentric suction cylinder foundation of offshore wind power according to an embodiment of the present application.

[0102] like Fig.10 As shown, the design device of the preset eccentric suction cylinder foundation of the offshore wind power includes a first acquisition module 110 , a generation module 120 , a second acquisition module 130 , a determination module 140 , an adjustment module 150 and a design module 160 .

[0103] The first acquisition module 110 is used to acquire the environmental information of the wind farm and the characteristic information of the wind turbine system.

[0104] The environmental information includes at least one of the speed, direction, and duration of wind, waves, and currents under operating conditions and extreme conditions;

[0105] The characteristic information includes at least one of lateral load, vertical load, bending moment and torque generated by the wind turbine under different working conditions.

[0106] The generating module 120 is used to generate a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information.

[0107] The generating module 120 is used to calculate the horizontal load F of the suction cylinder foundation according to the environmental information and the characteristic information. H and overturning moment M; according to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

[0108] The second acquisition module 130 is used to acquire the vertical load of the suction cylinder foundation.

[0109] The determination module 140 is used to determine the load eccentricity rose diagram according to the vertical load and the lateral load rose diagram.

[0110] The determination module 140 is used to obtain the load eccentricity rose diagram according to the eccentricity formula e=M / Fv, wherein e is the eccentricity, M is the overturning moment, and Fv is the vertical load.

[0111] The adjustment module 150 is used to adjust the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum.

[0112] The adjustment module 150 is used to determine the load direction with the largest eccentricity according to the load eccentricity rose diagram; and move the preset active eccentricity e' in the opposite direction to the load direction with the largest eccentricity to obtain the adjusted load eccentricity rose diagram.

[0113] The design module 160 is used to determine the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

[0114] In another embodiment of the present application, Fig.11 As shown, the device further includes a verification module 170 .

[0115] The verification module 170 is used to perform performance verification on the connection position based on design standards and specifications after determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

[0116] In another embodiment of the present application, Fig.12 As shown, the device further includes a mounting module 180 .

[0117] The installation module 180 is used to construct and install the physical suction cylinder foundation according to the connection position after the performance verification is passed.

[0118] The design device of the preset eccentric suction cylinder foundation of offshore wind power in the embodiment of the present application makes a preset deviation of the wind turbine tower from the center position of the foundation, thereby fully or partially offsetting the eccentricity caused by the lateral load of the wind turbine, thereby increasing the effective bearing area and effective width of the single-cylinder suction cylinder foundation in the in-situ state, improving the in-situ load-bearing efficiency and reliability of the single-cylinder suction cylinder foundation, achieving the purpose of reducing the main size of the foundation and reducing the construction and installation costs of the sea wind foundation, and providing a more optimized foundation form for sea wind development.

[0119] In order to implement the above-mentioned embodiments, the present application also proposes an electronic device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the design method of the preset eccentric suction cylinder foundation of offshore wind power as described in the first aspect embodiment.

[0120] In order to implement the above-mentioned embodiments, the present application also proposes a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, a design method for a preset eccentric suction cylinder foundation for offshore wind power as described in the first aspect embodiment is implemented.

[0121] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0122] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A design method for a preset eccentric suction cylinder foundation for offshore wind power, characterized in that: include: Obtain environmental information of the wind farm and characteristic information of the wind turbine system; Generate a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information; Obtaining the vertical load of the suction cylinder foundation; Determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagram; Adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum; The connection position between the suction cylinder foundation and the wind turbine tower is determined according to the adjusted load eccentricity rose diagram.

2. The design method according to claim 1, characterized in that: include: The environmental information includes at least one of the speed, direction, and duration of wind, waves, and currents under operating conditions and extreme conditions; The characteristic information includes at least one of lateral load, vertical load, bending moment and torque generated by the wind turbine under different working conditions.

3. The design method according to claim 1, characterized in that: Generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information includes: The horizontal load F of the suction cylinder foundation is calculated according to the environmental information and the characteristic information. H and overturning moment M; According to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

4. The design method according to claim 1, characterized in that: Determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagrams includes: The load eccentricity rose diagram is obtained according to the eccentricity formula e=M / Fv, wherein e is the eccentricity, M is the overturning moment, and Fv is the vertical load.

5. The design method according to claim 1, characterized in that: Adjusting the load eccentricity rose diagram includes: Determine the load direction with the largest eccentricity according to the load eccentricity rose diagram; The preset active eccentricity e' is moved in the opposite direction to the load direction with the largest eccentricity to obtain an adjusted load eccentricity rose diagram, so that the maximum value of the eccentricity in each direction in the adjusted load eccentricity rose diagram is the minimum.

6. The design method according to claim 1, characterized in that: After determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram, the method further includes: The connection locations are performance verified based on design standard specifications.

7. The design method according to claim 6, characterized in that: Also includes: After the performance is verified, the physical suction cylinder foundation is constructed and installed according to the described connection position.

8. A design device for a preset eccentric suction cylinder foundation for offshore wind power, characterized in that: include: A first acquisition module is used to acquire environmental information of the wind farm and characteristic information of the wind turbine system; A generating module, used for generating a lateral load rose diagram of the suction cylinder foundation according to the environmental information and the characteristic information; A second acquisition module is used to acquire the vertical load of the suction cylinder foundation; A determination module, used for determining a load eccentricity rose diagram according to the vertical load and the lateral load rose diagram; An adjustment module, used for adjusting the load eccentricity rose diagram so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum; The design module is used to determine the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

9. The design device according to claim 8, characterized in that include: The environmental information includes at least one of the speed, direction, and duration of wind, waves, and currents under operating conditions and extreme conditions; The characteristic information includes at least one of lateral load, vertical load, bending moment and torque generated by the wind turbine under different working conditions.

10. The design device according to claim 8, characterized in that The generating module is used for: The horizontal load F of the suction cylinder foundation is calculated according to the environmental information and the characteristic information. H and overturning moment M; According to the horizontal load F H and the overturning moment M generate the lateral load rose diagram.

11. The design device according to claim 8, characterized in that The determining module is used to: The load eccentricity rose diagram is obtained according to the eccentricity formula e=M / Fv, wherein e is the eccentricity, M is the overturning moment, and Fv is the vertical load.

12. The design device according to claim 8, characterized in that The adjustment module is used for: Determine the load direction with the largest eccentricity according to the load eccentricity rose diagram; The preset active eccentricity e' is moved in the opposite direction to the load direction with the largest eccentricity to obtain an adjusted load eccentricity rose diagram, so that the maximum value of the eccentricity in each direction in the load eccentricity rose diagram is the minimum.

13. The design device according to claim 8, characterized in that Also includes: The verification module is used to perform performance verification on the connection position based on design standards and specifications after determining the connection position between the suction cylinder foundation and the wind turbine tower according to the adjusted load eccentricity rose diagram.

14. The design device according to claim 13, characterized in that Also includes: The installation module is used to construct and install the physical suction cylinder foundation according to the connection position after the performance verification is passed.

15. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a design method for a preset eccentric suction cylinder foundation for offshore wind power as described in any one of claims 1 to 7 is implemented.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for designing a preset eccentric suction cylinder foundation for offshore wind power as claimed in any one of claims 1 to 7 is implemented.

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