Method and device for obtaining soil resistance of offshore wind power component

Abstract

The embodiment of the application provides a method and device for obtaining soil resistance of offshore wind power components, a strain value acquisition unit for a target measurement section is used to obtain a measurement strain value for the target measurement section; a dynamic bending moment value for the target measurement section is calculated based on an elastic modulus, a section resistance moment, the measurement strain value and a bridge arm coefficient; the dynamic bending moment value is polished to determine a smooth bending moment value; a smooth shear value for the offshore wind tower is calculated based on a plurality of smooth bending moment values for different sections; a soil resistance value for the foundation component is calculated based on the smooth shear value; a test result is generated by using the smooth bending moment value, the smooth shear value and the soil resistance value; and the mutation points and discontinuous conditions are eliminated or reduced, the bending moment curve is closer to the actual physical condition, and the accuracy of the test result is improved.

Description

Technical Field

[0001] This invention relates to the field of load test data processing technology, and in particular to a method for obtaining soil resistance of offshore wind turbine components, a device for obtaining soil resistance of offshore wind turbine components, an electronic device, and a computer-readable storage medium. Background Technology

[0002] As the load transfer structure between the wind turbine foundation and the upper tower, the offshore wind turbine tower is responsible for transferring the load from the upper part of the wind turbine to the tower in the real marine environment, and then from the tower to the jacket foundation. Therefore, the actual load capacity of the connection between the jacket and the tower is crucial for the design. Summary of the Invention

[0003] The present invention provides a method, apparatus, electronic device, and computer-readable storage medium for obtaining soil resistance of offshore wind turbine components, in order to overcome or at least partially solve the above-mentioned problems.

[0004] This invention discloses a method for obtaining the soil resistance of offshore wind turbine components. The method is applied to an offshore wind turbine tower bending moment and shear load testing system, and includes:

[0005] A target measurement section for the offshore wind turbine tower is determined. The offshore wind turbine tower bending moment and shear load testing system is equipped with a strain value acquisition unit for the target measurement section. The strain value acquisition unit includes a first strain gauge and a second strain gauge for the horizontal direction, and a third strain gauge and a fourth strain gauge for the vertical direction. The first strain gauge and the fourth strain gauge are arranged adjacently and vertically to form a first strain gauge group, and the second strain gauge and the third strain gauge are arranged adjacently and vertically to form a second strain gauge group. The first strain gauge group and the second strain gauge group are respectively arranged on both sides of the offshore wind turbine tower, forming a strain value acquisition unit.

[0006] Determine the arm coefficient for the aforementioned offshore wind turbine tower;

[0007] Determine the elastic modulus and section modulus of the offshore wind turbine tower;

[0008] The strain value of the target measurement section is obtained using a strain value acquisition unit.

[0009] Based on the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient, the dynamic bending moment value for the target measurement section is calculated;

[0010] The dynamic bending moment value is polished to determine a smooth bending moment value;

[0011] The smooth shear force value for the offshore wind turbine tower is calculated based on multiple smooth bending moment values ​​for different cross sections.

[0012] The soil resistance value for the foundation component is calculated based on the smooth shear force value.

[0013] Test results are generated using the smoothed bending moment value, the smoothed shear force value, and the soil resistance value.

[0014] Optionally, multiple sets of strain value acquisition units are arranged on the same vertical line, and the arrangement direction of the strain value acquisition units is determined based on the bending direction of the offshore wind turbine tower.

[0015] Optionally, the step of calculating the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient includes:

[0016] The elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient are input into Formula 1 to calculate the dynamic bending moment value for the target measured section. Formula 1 is as follows:

[0017] M = E·W·ε 测 / A

[0018] Where M is the first dynamic bending moment value, E is the elastic modulus, W is the section modulus, and ε 测 Let A be the measured strain value, and let A be the bridge arm coefficient.

[0019] Optionally, the step of polishing the dynamic bending moment value to determine a smooth bending moment value includes:

[0020] The dynamic bending moment value of the first measurement section from the top of the offshore wind turbine tower downwards is determined and converted to obtain the first initial bending moment value;

[0021] The dynamic bending moment value of the second measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the second initial bending moment value;

[0022] The dynamic bending moment value of the third measurement section from the top of the offshore wind turbine tower downwards is converted to obtain the third initial bending moment value;

[0023] The dynamic bending moment value of the fourth measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the fourth initial bending moment value;

[0024] The dynamic bending moment value of the fifth measurement section downward from the top of the offshore wind turbine tower is determined to be the fifth initial bending moment value, which is obtained by conversion.

[0025] The smooth bending moment value is determined by the first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value.

[0026] Optionally, the step of determining the smoothed bending moment value using the first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value includes:

[0027] The first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value are input into Formula 2 to calculate the first smooth bending moment value of the first measurement section downward from the top of the offshore wind turbine tower, and the second smooth bending moment value of the second measurement section downward from the top of the offshore wind turbine tower. Formula 2 is as follows:

[0028]

[0029] in,

[0030] M(x0-2h) is the first initial bending moment value;

[0031] M(x0-h) is the second initial bending moment value;

[0032] M(x0) is the third initial bending moment value;

[0033] M(x0+h) is the fourth initial bending moment value;

[0034] M(x0+2h) is the fifth initial bending moment value;

[0035] This is the first smooth bending moment value;

[0036] This is the second smooth bending moment value.

[0037] Optionally, it also includes:

[0038] The sixth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section above the middle section of the offshore wind turbine tower.

[0039] The seventh initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section upward from the middle section of the offshore wind turbine tower.

[0040] The eighth initial bending moment value is obtained by converting the dynamic bending moment value of the intermediate section of the offshore wind turbine tower.

[0041] The ninth initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section downward from the middle section of the offshore wind turbine tower.

[0042] The tenth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section downward from the middle section of the offshore wind turbine tower.

[0043] The smoothing moment value is determined using the sixth initial bending moment value, the seventh initial bending moment value, the eighth initial bending moment value, the ninth initial bending moment value, and the tenth initial bending moment value.

[0044] Optionally, the step of determining the smoothed bending moment value using the sixth initial bending moment value, the seventh initial bending moment value, the eighth initial bending moment value, the ninth initial bending moment value, and the tenth initial bending moment value includes:

[0045] The sixth, seventh, eighth, ninth, and tenth initial bending moment values ​​are input into Formula 3 to calculate the third smooth bending moment value of the intermediate section of the offshore wind turbine tower. Formula 3 is as follows:

[0046]

[0047] in,

[0048] M(x0-2h) is the sixth initial bending moment value;

[0049] M(x0-h) is the seventh initial bending moment value;

[0050] M(x0) is the eighth initial bending moment value;

[0051] M(x0+h) is the ninth initial bending moment value;

[0052] M(x0+2h) is the tenth initial bending moment value;

[0053] This is the third smooth bending moment value.

[0054] Optionally, it also includes:

[0055] The dynamic bending moment value of the fifth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to the eleventh initial bending moment value;

[0056] The dynamic bending moment value of the fourth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the twelfth initial bending moment value;

[0057] The dynamic bending moment value of the third measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the thirteenth initial bending moment value;

[0058] The dynamic bending moment value of the second measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the fourteenth initial bending moment value;

[0059] The dynamic bending moment value of the first measurement section downward from the bottom of the offshore wind turbine tower is converted to the fifteenth initial bending moment value;

[0060] The smoothing moment value is determined using the eleventh initial bending moment value, the twelfth initial bending moment value, the thirteenth initial bending moment value, the fourteenth initial bending moment value, and the fifteenth initial bending moment value.

[0061] Optionally, the step of determining the smoothed bending moment value using the eleventh initial bending moment value, the twelfth initial bending moment value, the thirteenth initial bending moment value, the fourteenth initial bending moment value, and the fifteenth initial bending moment value includes:

[0062] The eleventh, twelfth, thirteenth, fourteenth, and fifteenth initial bending moment values ​​are input into Formula 4 to calculate the fourth smooth bending moment value at the second measurement section upwards from the bottom of the offshore wind turbine tower, and the fifth smooth bending moment value at the first measurement section upwards from the bottom of the offshore wind turbine tower. Formula 4 is as follows:

[0063]

[0064] in,

[0065] M(x0-2h) is the eleventh initial bending moment value;

[0066] M(x0-h) is the twelfth initial bending moment value;

[0067] M(x0) is the thirteenth initial bending moment value;

[0068] M(x0+h) is the fourteenth initial bending moment value;

[0069] M(x0+2h) is the fifteenth initial bending moment value;

[0070] This is the fourth smooth bending moment value;

[0071] This is the fifth smooth bending moment value.

[0072] Optionally, the step of calculating the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different cross-sections includes:

[0073] Determine the length of the offshore wind turbine tower;

[0074] The length of the offshore wind turbine tower, the first smooth bending moment value, the second smooth bending moment value, the third smooth bending moment value, the fourth smooth bending moment value, and the fifth smooth bending moment value are input into Formula 5 to calculate the smooth shear force value for the offshore wind turbine tower. Formula 5 is as follows:

[0075]

[0076] Wherein, Q(x0-2h), Q(x0-h), Q(x0), Q(x0+h), and Q(x0+2h) are the smooth shear force values, and is the length of the offshore wind turbine tower.

[0077] Optionally, the step of calculating the soil resistance value for the foundation member based on the smooth shear force value includes:

[0078] Determine the diameter of the pile body of the offshore wind turbine tower;

[0079] Substituting the pile diameter, the length of the offshore wind turbine tower, and the smooth shear force value into Formula Six, the soil resistance value for the offshore wind turbine tower is calculated. Formula Six is:

[0080]

[0081] Wherein, B is the diameter of the pile body.

[0082] Optionally, it also includes:

[0083] Based on the pile diameter, the distribution map of the soil resistance value is obtained by the second derivative of the dynamic bending moment value.

[0084] This invention also discloses a device for obtaining soil resistance of offshore wind turbine components. The device is applied to an offshore wind turbine tower bending moment and shear load testing system, and includes:

[0085] The target measurement section determination module is used to determine the target measurement section for the offshore wind turbine tower. The offshore wind turbine tower bending moment and shear load testing system is equipped with a strain value acquisition unit for the target measurement section. The strain value acquisition unit includes a first strain gauge and a second strain gauge for the horizontal direction, and a third strain gauge and a fourth strain gauge for the vertical direction. The first strain gauge and the fourth strain gauge are arranged adjacently and vertically to form a first strain gauge group, and the second strain gauge and the third strain gauge are arranged adjacently and vertically to form a second strain gauge group. The first strain gauge group and the second strain gauge group are respectively arranged on both sides of the offshore wind turbine tower, forming a set of strain value acquisition units.

[0086] The arm coefficient determination module is used to determine the arm coefficient for the offshore wind turbine tower.

[0087] The tower elastic modulus and section modulus determination module is used to determine the tower elastic modulus and section modulus for the offshore wind turbine tower.

[0088] A strain value acquisition module is used to acquire a strain value for the target measurement section using a strain value acquisition unit for the target measurement section;

[0089] The dynamic bending moment calculation module is used to calculate the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value and the bridge arm coefficient.

[0090] The smooth bending moment value determination module is used to polish the dynamic bending moment value and determine the smooth bending moment value;

[0091] The smooth shear force calculation module is used to calculate the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different sections.

[0092] The soil resistance value calculation module is used to calculate the soil resistance value for the foundation component based on the smooth shear force value;

[0093] The test result generation module is used to generate test results using the smoothed bending moment value, the smoothed shear force value, and the soil resistance value.

[0094] This invention also discloses an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0095] The memory is used to store computer programs;

[0096] When the processor executes a program stored in the memory, it implements the method described in the embodiments of the present invention.

[0097] This invention also discloses a computer-readable storage medium storing instructions that, when executed by one or more processors, cause the processors to perform the methods described in this invention.

[0098] The embodiments of the present invention have the following advantages:

[0099] This invention, in its embodiments, involves: determining a target measurement section for an offshore wind turbine tower; determining the jib coefficient for the offshore wind turbine tower; determining the tower's elastic modulus and section modulus; acquiring the measured strain value for the target measurement section using a strain value acquisition unit; calculating the dynamic bending moment value for the target measurement section based on the elastic modulus, section modulus, measured strain value, and jib coefficient; smoothing the dynamic bending moment value to determine a smooth bending moment value; calculating the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different sections; calculating the soil resistance value for the foundation components based on the smooth shear force value; and generating test results using the smooth bending moment value, the smooth shear force value, and the soil resistance value. This process eliminates or reduces abrupt changes and discontinuities, making the bending moment curve closer to actual physical conditions, thereby improving the accuracy of the test results. Attached Figure Description

[0100] Figure 1 This is a flowchart illustrating the steps of a method for obtaining the soil resistance of an offshore wind turbine component, as provided in an embodiment of the present invention.

[0101] Figure 2 This is a schematic diagram of the structure of a strain value acquisition unit provided in an embodiment of the present invention;

[0102] Figure 3 This is a comparison diagram of the structural bending moment distribution curve along the length before and after smoothing, provided in an embodiment of the present invention;

[0103] Figure 4 This is a differential shear force / soil resistance distribution curve along the length provided in this embodiment of the invention;

[0104] Figure 5 This is a structural block diagram of a device for obtaining soil resistance of offshore wind power components provided in an embodiment of the present invention;

[0105] Figure 6 This is a hardware structure block diagram of an electronic device provided in an embodiment of the present invention;

[0106] Figure 7 This is a schematic diagram of a computer-readable medium provided in an embodiment of the present invention. Detailed Implementation

[0107] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0108] In practical applications, the finite difference method is generally used to calculate the shear force curve based on the bending moment distribution. However, when encountering abrupt change points or other issues, the calculated distribution of variables such as bending moment and shear force along the structural length often does not conform to the actual situation. If this needs to be addressed, specialized software is often required to perform successive fitting to obtain the fitted curve before performing the finite difference calculation. This process requires a high level of expertise and is not easy to use.

[0109] The relevant technologies have the following main problems and drawbacks when processing bending moment and shear force data for offshore wind turbine steel pipe piles and tower structures:

[0110] 1. The bending moment curve obtained from actual field measurements is prone to abrupt changes and is not a smooth shape due to random factors such as measurement errors in the measurement signal. This can easily lead to data errors in the direct processing of data obtained from bending moment curve difference to obtain shear force curve and from bending moment curve second difference to obtain soil resistance curve, which is not conducive to data analysis. At the same time, the unsmooth data may lead to inaccurate test and analysis results of pile foundation or tower, resulting in inaccurate foundation structure design.

[0111] 2. Abrupt change points often do not conform to the continuity assumption in physical reality. In actual physical systems, most parameter changes are continuous rather than abrupt. The existence of abrupt change points may lead to unreasonable differential results and fail to accurately reflect the actual physical situation.

[0112] 3. The bending moment curve converted from the strain data obtained from actual field measurements often contains abrupt changes and discontinuities due to measurement errors and random factors. These abrupt changes can lead to unreasonable results in the shear force and soil resistance curves obtained from subsequent differential calculations.

[0113] 4. It requires the use of specialized software for successive fitting and calculation, which is complex and requires a high level of professional knowledge, making it difficult for ordinary testers to operate.

[0114] 5. When performing differential calculations at abrupt change points, small errors in measurement and calculation can be amplified, leading to inaccurate results and affecting data analysis and structural design.

[0115] 6. Data mutations and discontinuities not only affect the differential calculation results, but may also lead to inaccurate test and analysis results of pile foundations or towers, thereby affecting the rationality and safety of foundation structure design.

[0116] Reference Figure 1 The diagram illustrates a flowchart of a method for obtaining the soil resistance of an offshore wind turbine component according to an embodiment of the present invention, which may specifically include the following steps:

[0117] Step S1: Determine the target measurement section for the offshore wind turbine tower;

[0118] Step S2: Determine the boom coefficient for the offshore wind turbine tower.

[0119] Step S3: Determine the elastic modulus and section modulus of the offshore wind turbine tower.

[0120] Step S4: Use the strain value acquisition unit for the target measurement section to acquire the measured strain value for the target measurement section;

[0121] Step S5: Calculate the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient.

[0122] Step S6: Polish the dynamic bending moment value to determine a smooth bending moment value;

[0123] Step S7: Calculate the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different cross sections;

[0124] Step S8: Calculate the soil resistance value for the foundation component based on the smooth shear force value;

[0125] Step S9: Use the smoothed bending moment value, the smoothed shear force value, and the soil resistance value to generate test results.

[0126] In specific implementations, embodiments of the present invention can be applied to a bending moment and shear load testing system for offshore wind turbine towers. This system may include strain gauges for acquiring strain values, as well as a signal transmission unit, a signal acquisition unit, and data processing equipment. Optionally, the method can also be applied to bending moment and shear load testing systems for components with annular cross-sections, such as blade roots and steel pipe piles.

[0127] In practical applications, offshore wind turbine components can include offshore wind turbine towers and foundation components. The offshore wind turbine towers are used to assemble the fan blades, and the foundation components are used to extend into the seabed to provide stability for the offshore wind turbine.

[0128] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a strain value acquisition unit provided in an embodiment of the present invention;

[0129] The section to be measured is defined as the target measurement section, and strain sensors are symmetrically arranged on both sides of the offshore wind turbine tower. Each side has two single straight strain gauges. The first strain gauge 101 is installed perpendicularly to and adjacent to the fourth strain gauge 104, and the second strain gauge 102 is installed perpendicularly to and adjacent to the third strain gauge 103. The first strain gauge 101 and the fourth strain gauge 104 constitute the first strain gauge group, and the second strain gauge 102 and the third strain gauge 103 constitute the second strain gauge group. The first strain gauge group and the second strain gauge group constitute a strain value acquisition unit.

[0130] Optionally, multiple sets of strain value acquisition units are arranged on the same vertical line, and the arrangement direction of the strain value acquisition units is determined based on the bending direction of the offshore wind turbine tower. For example, the installation direction of the strain value acquisition units can be determined by the bending direction 11 of the offshore wind turbine tower 10.

[0131] In practical applications, bending moment and shear force are forces acting inside a structural member, and they cannot be directly measured. Therefore, it is necessary to determine the bending moment and shear force by analyzing the internal force equilibrium of the member's cross-sections. Consider a member with a known stress state, and take two cross-sections at any given point. These two cross-sections can be considered as separate mechanical systems. For these two mechanical systems, the moment equilibrium equations and shear force equilibrium equations can be established separately. These two equations are independent because they are derived from different cross-sections.

[0132] Soil resistance refers to the horizontal resistance of the foundation soil at different depths below the mudline acting on the pile foundation. The soil resistance at different depth sections of a steel pipe pile foundation and the pile deformation at that location form a pair of values. A series of p and y measuring points generated under different horizontal loads form a py curve, representing the pile-soil interaction spring. This curve can calculate the horizontal bearing capacity and tilt deformation of steel pipe pile foundations in various soil types. Revised and verified py curves can accurately measure the distribution of pile bending moment, soil pressure, and pile displacement, playing a crucial role in the safety of offshore wind turbines. However, the py curves currently recommended in various standards all have various problems, seriously overestimating or greatly underestimating the soil resistance and initial stiffness around the pile, requiring predictive design through actual measurement verification.

[0133] Therefore, embodiments of the present invention can determine multiple measurement sections for offshore wind turbine towers at preset intervals.

[0134] After determining the target measurement section, the arm coefficient and material parameters of the strain value acquisition unit layout scheme for offshore wind turbine towers can be determined. The material parameters include at least the tower's elastic modulus and section modulus.

[0135] In the process of measuring bending moment and shear force, the bridge arm coefficient, the elastic modulus of the tower, and the section modulus are three important parameters that have a significant impact on the calculation results.

[0136] The sling factor is the ratio of the distance from the centroid of the tower section to the neutral axis to the section modulus. It is a dimensionless quantity. The sling factor reflects the influence of the cross-sectional shape on the resistance to bending moment. The larger the sling factor, the greater the resistance of the cross-section to bending moment.

[0137] The elastic modulus refers to the unit strain of a material under unit stress. It is a mechanical parameter. The elastic modulus reflects the stiffness of the tower material. The larger the elastic modulus, the greater the stiffness of the material and the stronger its resistance to deformation.

[0138] Section modulus is the ratio of the section's moment of inertia about its neutral axis to its maximum distance from the center. It is a mechanical parameter. Section modulus reflects the influence of the section shape on its resistance to bending moment. The larger the section modulus, the greater the section's resistance to bending moment.

[0139] In this embodiment of the invention, a strain value acquisition unit for the target measurement section can be used to acquire the measured strain value for the target measurement section.

[0140] Optionally, the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient can be input into Formula 1 to calculate the dynamic bending moment value for the target measurement section. Formula 1 is:

[0141] M = E·W·ε 测 / A

[0142] Where M is the first dynamic bending moment value, E is the elastic modulus, W is the section modulus, and ε 测 Let A be the measured strain value, and let A be the bridge arm coefficient.

[0143] In practical implementation, if the measured bending moments are not equidistant from the vertical spacing of the piles of offshore wind turbine towers, linear interpolation can be performed first to obtain equidistant interpolated bending moment data. Then, a multi-point slip method can be used for polishing to locally correct the dynamic bending moment value, thereby obtaining a smooth bending moment value. This addresses issues such as data abrupt changes and non-smooth curves. Based on multiple smooth bending moment values ​​for different sections, a smooth shear force value for the offshore wind turbine tower can be calculated, and based on the smooth shear force value, a soil resistance value for the foundation components can be calculated. This eliminates or reduces abrupt changes and discontinuities, making the bending moment curve closer to the actual physical conditions and improving the accuracy of the test results.

[0144] Furthermore, differentiation is the process of finding the slope of a curve. Abrupt changes in the slope around a point can amplify measurement and calculation errors. Even small noise or errors can be amplified when performing differentiation calculations at abrupt changes, leading to inaccurate results. By processing the original bending moment curve using a multi-point smoothing difference method, abrupt changes can be reduced or eliminated. The smoothed curve, when differentiated, can solve the problems of large errors in data analysis results caused by data abrupt changes, inaccurate distribution curves, and spurious extrema or outliers caused by abrupt changes. The smoothed data is closer to reality, and the differentiation results are more reliable.

[0145] Furthermore, it enables highly efficient analysis, allowing data processing and analysis results to be obtained directly through manual calculation without the need for any tools. This greatly solves the problem of high professional barriers in data analysis and the difficulty of data analysis for most testers.

[0146] Furthermore, a sudden change in the shear force diagram might be mistaken for an actual extreme shear force, thus affecting design decisions. Smoothing is an indispensable step, both in the preprocessing stage of measurement data and in subsequent analysis and design. Smoothing improves the reliability and accuracy of data, ensuring the rationality and safety of structural analysis and design.

[0147] Furthermore, by efficiently obtaining the processed bending moment, shear force, and soil resistance data, the operational difficulty and professional threshold are reduced.

[0148] Furthermore, it is applicable to data processing along the entire length of steel pipe piles or towers, providing complete results on the distribution of bending moment, shear force, and soil resistance.

[0149] Based on the above embodiments, modified embodiments of the above embodiments are proposed. It should be noted that, in order to keep the description brief, only the differences from the above embodiments are described in the modified embodiments.

[0150] In an optional embodiment of the present invention, the dynamic bending moment value can be polished using formula zero to determine a smooth bending moment value.

[0151] Formula 0:

[0152]

[0153] In an optional embodiment of the present invention, the step of polishing the dynamic bending moment value to determine a smooth bending moment value includes:

[0154] The dynamic bending moment value of the first measurement section from the top of the offshore wind turbine tower downwards is determined and converted to obtain the first initial bending moment value;

[0155] The dynamic bending moment value of the second measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the second initial bending moment value;

[0156] The dynamic bending moment value of the third measurement section from the top of the offshore wind turbine tower downwards is converted to obtain the third initial bending moment value;

[0157] The dynamic bending moment value of the fourth measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the fourth initial bending moment value;

[0158] The dynamic bending moment value of the fifth measurement section downward from the top of the offshore wind turbine tower is determined to be the fifth initial bending moment value, which is obtained by conversion.

[0159] The smooth bending moment value is determined by the first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value.

[0160] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a strain value acquisition unit provided in an embodiment of the present invention;

[0161] The smooth bending moment at the first measurement point 1 downwards from the top of the offshore wind turbine tower. And the smooth bending moment at the second measurement location 2 The smooth bending moment can be calculated using the first and second rows of formula zero, respectively.

[0162] The first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value are input into Formula 2 to calculate the first smooth bending moment value of the first measurement section downward from the top of the offshore wind turbine tower, and the second smooth bending moment value of the second measurement section downward from the top of the offshore wind turbine tower. Formula 2 is as follows:

[0163]

[0164] in,

[0165] M(x0-2h) is the first initial bending moment value;

[0166] M(x0-h) is the second initial bending moment value;

[0167] M(x0) is the third initial bending moment value;

[0168] M(x0+h) is the fourth initial bending moment value;

[0169] M(x0+2h) is the fifth initial bending moment value;

[0170] This is the first smooth bending moment value;

[0171] This is the second smooth bending moment value.

[0172] In an optional embodiment of the present invention, a sixth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section above the middle section of the offshore wind turbine tower.

[0173] The seventh initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section upward from the middle section of the offshore wind turbine tower.

[0174] The eighth initial bending moment value is obtained by converting the dynamic bending moment value of the intermediate section of the offshore wind turbine tower.

[0175] The ninth initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section downward from the middle section of the offshore wind turbine tower.

[0176] The tenth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section downward from the middle section of the offshore wind turbine tower.

[0177] The smoothing moment value is determined using the sixth initial bending moment value, the seventh initial bending moment value, the eighth initial bending moment value, the ninth initial bending moment value, and the tenth initial bending moment value.

[0178] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a strain value acquisition unit provided in an embodiment of the present invention;

[0179] The smooth bending moment of all measured sections (positions 3 and 4) between position 2 (the second measurement down from the top of the offshore wind turbine tower) and position 5 (the second measurement up from the bottom of the offshore wind turbine tower). The calculation can be performed using the third row of formula zero.

[0180] Of course, the above examples are merely examples. Those skilled in the art can use any number to determine the measurement cross section. For example, when the measurement cross section is 100, the measurement cross section between the second measurement position downward from the top of the offshore wind turbine tower and the second measurement position upward from the bottom of the offshore wind turbine tower is the 3rd to the 98th. This embodiment of the present invention does not limit this.

[0181] The sixth, seventh, eighth, ninth, and tenth initial bending moment values ​​are input into Formula 3 to calculate the third smooth bending moment value of the intermediate section of the offshore wind turbine tower. Formula 3 is as follows:

[0182]

[0183] in,

[0184] M(x0-2h) is the sixth initial bending moment value;

[0185] M(x0-h) is the seventh initial bending moment value;

[0186] M(x0) is the eighth initial bending moment value;

[0187] M(x0+h) is the ninth initial bending moment value;

[0188] M(x0+2h) is the tenth initial bending moment value;

[0189] This is the third smooth bending moment value.

[0190] In an optional embodiment of the present invention, it further includes:

[0191] The dynamic bending moment value of the fifth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to the eleventh initial bending moment value;

[0192] The dynamic bending moment value of the fourth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the twelfth initial bending moment value;

[0193] The dynamic bending moment value of the third measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the thirteenth initial bending moment value;

[0194] The dynamic bending moment value of the second measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the fourteenth initial bending moment value;

[0195] The dynamic bending moment value of the first measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the fifteenth initial bending moment value;

[0196] The smoothing moment value is determined using the eleventh initial bending moment value, the twelfth initial bending moment value, the thirteenth initial bending moment value, the fourteenth initial bending moment value, and the fifteenth initial bending moment value.

[0197] refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of a strain value acquisition unit provided in an embodiment of the present invention;

[0198] The smooth bending moment at position 6, the first measurement point upwards from the bottom of the structure. And the smooth bending moment at the second measurement location 5 The smooth bending moment is calculated using the fifth and fourth lines of formula zero, respectively.

[0199] The eleventh, twelfth, thirteenth, fourteenth, and fifteenth initial bending moment values ​​are input into Formula 4 to calculate the fourth smooth bending moment value at the second measurement section upwards from the bottom of the offshore wind turbine tower, and the fifth smooth bending moment value at the first measurement section upwards from the bottom of the offshore wind turbine tower. Formula 4 is as follows:

[0200]

[0201] in,

[0202] M(x0-2h) is the eleventh initial bending moment value;

[0203] M(x0-h) is the twelfth initial bending moment value;

[0204] M(x0) is the thirteenth initial bending moment value;

[0205] M(x0+h) is the fourteenth initial bending moment value;

[0206] M(x0+2h) is the fifteenth initial bending moment value;

[0207] This is the fourth smooth bending moment value;

[0208] This is the fifth smooth bending moment value.

[0209] refer to Figure 3 , Figure 3 This is a comparison diagram of the structural bending moment distribution curve before and after smoothing provided in an embodiment of the present invention; in this embodiment of the present invention, by obtaining smooth bending moment values ​​from different sections of the offshore wind turbine tower, the bending moment load test of the entire offshore wind turbine tower is realized, further improving the test efficiency.

[0210] For both offshore wind turbine tower structures and steel pipe piles, it is necessary to calculate the structural shear force distribution. The shear force Q of the pile body is obtained by performing multi-point smoothing and first differentiation on the smoothed bending moment using the following calculation method.

[0211] Optionally, the step of calculating the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different cross-sections includes:

[0212] Determine the length of the offshore wind turbine tower;

[0213] The length of the offshore wind turbine tower, the first smooth bending moment value, the second smooth bending moment value, the third smooth bending moment value, the fourth smooth bending moment value, and the fifth smooth bending moment value are input into Formula 5 to calculate the smooth shear force value for the offshore wind turbine tower. Formula 5 is as follows:

[0214]

[0215] Wherein, Q(x0-2h), Q(x0-h), Q(x0), Q(x0+h), and Q(x0+2h) are the smooth shear force values, and is the length of the offshore wind turbine tower.

[0216] Since the smooth shear force value in this embodiment of the invention is calculated from the smooth bending moment value, it effectively avoids abrupt changes and discontinuities, further improving the accuracy of load test results.

[0217] In an optional embodiment of the present invention, the bending moment obtained by the test can be inserted at equal intervals along the axial direction of the steel pipe pile foundation, and then polished using a multi-point sliding method to locally correct the bending moment. The bending moment after smoothing is differentiated once to obtain the pile shear force Q, in kN. The shear force is differentiated again and divided by the pile diameter to obtain the soil resistance q, in kN / m.

[0218] In a practical implementation, the diameter of the pile body of the offshore wind turbine can be determined;

[0219] Substituting the pile diameter, the length of the offshore wind turbine tower, and the smooth shear force value into Formula Six, the soil resistance value for the offshore wind turbine tower is calculated. Formula Six is:

[0220]

[0221] Wherein, B is the diameter of the pile body.

[0222] Optionally, the key to obtaining the soil resistance q is to determine the distribution diagram of the soil resistance q experienced by the pile under various load levels. In this embodiment of the invention, it can be obtained by using the second derivative of the dynamic bending moment value through Formula 7;

[0223] Formula 7:

[0224]

[0225] Formula 7 describes the relationship between the bending moment of the pile body of an offshore wind turbine and the distributed load acting on the pile body.

[0226] M: Represents the bending moment of the pile at position x. Bending moment is the internal moment that causes the beam to bend.

[0227] x: Represents the coordinate along the length of the pile.

[0228] q: represents the distributed load acting on the pile and perpendicular to the x-axis.

[0229] B: Pile diameter.

[0230] The physical meaning of Formula 7 is that the curvature of the bending moment curve of the pile is directly proportional to the distributed load acting on the pile. In other words, the greater the distributed load, the greater the degree of bending of the pile.

[0231] refer to Figure 4 , Figure 4 This invention provides a differential shear force / soil resistance distribution curve along the length of the structure. The original bending moment curve is processed using a multi-point smoothing difference method to reduce or eliminate abrupt changes. The smoothed curve and its difference can solve the problems of large errors in data analysis results and inaccurate distribution curves caused by data abrupt changes, as well as pseudo-extremes or outliers caused by abrupt changes. The smoothed data is closer to the actual situation, and the differential results are more reliable. An abrupt change in the shear force diagram may be mistaken for an actual shear force extreme value, thus affecting design decisions. Smoothing is an indispensable step, both in the preprocessing stage of measurement data and in subsequent analysis and design processes. Through smoothing, the reliability and accuracy of data can be improved, ensuring the rationality and safety of structural analysis and design.

[0232] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0233] Reference Figure 5 The diagram shows a structural block diagram of a soil resistance acquisition device for offshore wind turbine components provided in an embodiment of the present invention, which may specifically include the following modules:

[0234] The target measurement section determination module 501 is used to determine the target measurement section for the offshore wind turbine tower. The offshore wind turbine tower bending moment and shear load testing system is equipped with a strain value acquisition unit for the target measurement section. The strain value acquisition unit includes a first strain gauge and a second strain gauge for the horizontal direction, and a third strain gauge and a fourth strain gauge for the vertical direction. The first strain gauge and the fourth strain gauge are arranged adjacently and vertically to form a first strain gauge group, and the second strain gauge and the third strain gauge are arranged adjacently and vertically to form a second strain gauge group. The first strain gauge group and the second strain gauge group are respectively arranged on both sides of the offshore wind turbine tower, forming a strain value acquisition unit.

[0235] The arm coefficient determination module 502 is used to determine the arm coefficient for the offshore wind turbine tower.

[0236] The tower elastic modulus and section modulus determination module 503 is used to determine the tower elastic modulus and section modulus for the offshore wind turbine tower.

[0237] The strain value acquisition module 504 is used to acquire the strain value of the target measurement section using the strain value acquisition unit for the target measurement section;

[0238] The dynamic bending moment calculation module 505 is used to calculate the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value and the bridge arm coefficient.

[0239] The smooth bending moment value determination module 506 is used to perform a polishing process on the dynamic bending moment value to determine the smooth bending moment value;

[0240] The smooth shear force calculation module 507 is used to calculate the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different sections.

[0241] Soil resistance value calculation module 508 is used to calculate the soil resistance value for the foundation component based on the smooth shear force value;

[0242] The test result generation module 509 is used to generate test results using the smoothed bending moment value, the smoothed shear force value, and the soil resistance value.

[0243] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0244] In addition, this invention also provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the various processes of the above-described method for obtaining the soil resistance of offshore wind power components and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0245] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the above-described method for obtaining soil resistance of offshore wind turbine components, achieving the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0246] Figure 6A schematic diagram of the hardware structure of an electronic device for implementing various embodiments of the present invention.

[0247] The electronic device 600 includes, but is not limited to, components such as: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will understand that... Figure 6 The electronic device structures shown are not intended to limit the electronic device. An electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements. In embodiments of the present invention, the electronic device includes, but is not limited to, mobile phones, tablet computers, laptops, PDAs, in-vehicle terminals, wearable devices, and pedometers.

[0248] It should be understood that, in this embodiment of the invention, the radio frequency unit 601 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink data from the base station and processes it with the processor 610; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the radio frequency unit 601 can also communicate with networks and other devices through a wireless communication system.

[0249] The electronic device provides users with wireless broadband internet access through the network module 602, such as helping users send and receive emails, browse web pages, and access streaming media.

[0250] The audio output unit 603 can convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into audio signals and output them as sound. Furthermore, the audio output unit 603 can also provide audio output related to specific functions performed by the electronic device 600 (e.g., call signal reception sound, message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, and a receiver, etc.

[0251] Input unit 604 is used to receive audio or video signals. Input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042. GPU 6041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on display unit 606. The image frames processed by GPU 6041 can be stored in memory 609 (or other storage medium) or transmitted via radio frequency unit 601 or network module 602. Microphone 6042 can receive sound and process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via radio frequency unit 601 in telephone call mode.

[0252] The electronic device 600 also includes at least one sensor 605, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 6061 according to the ambient light level, and the proximity sensor can turn off the display panel 6061 and / or backlight when the electronic device 600 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used to identify the posture of the electronic device (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. The sensor 605 may also include a fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., which will not be described in detail here.

[0253] The display unit 606 is used to display information input by the user or information provided to the user. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0254] User input unit 607 can be used to receive input numerical or character information, and to generate key signal inputs related to user settings and function control of electronic devices. Specifically, user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 6071). Touch panel 6071 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 610, which receives and executes commands from the processor 610. In addition, touch panel 6071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. Besides touch panel 6071, user input unit 607 may also include other input devices 6072. Specifically, other input devices 6072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0255] Enter In one step, the touch panel 6071 can cover the display panel 6061. When the touch panel 6071 detects a touch operation on or near it, it transmits the information to the processor 610 to determine the type of touch event. Subsequently, the processor 610 provides corresponding visual output on the display panel 6061 based on the type of touch event. Although in Figure 6 In this embodiment, the touch panel 6071 and the display panel 6061 are two independent components to realize the input and output functions of the electronic device. However, in some embodiments, the touch panel 6071 and the display panel 6061 can be integrated to realize the input and output functions of the electronic device. The specific implementation is not limited here.

[0256] Interface unit 608 serves as an interface for connecting external devices to electronic device 600. For example, external devices may include a wired or wireless headphone port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 608 can be used to receive input from external devices (e.g., data, power, etc.) and transmit the received input to one or more components within electronic device 600, or it can be used to transmit data between electronic device 600 and external devices.

[0257] The memory 609 can be used to store software programs and various data. The memory 609 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 609 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0258] The processor 610 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 609, and by calling data stored in the memory 609, it performs various functions and processes data, thereby providing overall monitoring of the electronic device. The processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 610.

[0259] The electronic device 600 may also include a power supply 611 (such as a battery) for supplying power to various components. Preferably, the power supply 611 is logically connected to the processor 610 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system.

[0260] In addition, the electronic device 600 includes some functional modules not shown, which will not be described in detail here.

[0261] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0262] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0263] like Figure 7 As shown, in another embodiment of the present invention, a computer-readable storage medium 701 is also provided, which stores instructions that, when run on a computer, cause the computer to execute the method for obtaining the soil resistance of offshore wind power components described in the above embodiment.

[0264] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

[0265] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed in this invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0266] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0267] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0268] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0269] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0270] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0271] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for obtaining the soil resistance of offshore wind turbine components, characterized in that, The method is applied to an offshore wind turbine tower bending moment and shear load testing system, including: A target measurement section for the offshore wind turbine tower is determined. The offshore wind turbine tower bending moment and shear load testing system is equipped with a strain value acquisition unit for the target measurement section. The strain value acquisition unit includes a first strain gauge and a second strain gauge for the horizontal direction, and a third strain gauge and a fourth strain gauge for the vertical direction. The first strain gauge and the fourth strain gauge are arranged adjacently and vertically to form a first strain gauge group, and the second strain gauge and the third strain gauge are arranged adjacently and vertically to form a second strain gauge group. The first strain gauge group and the second strain gauge group are respectively arranged on both sides of the offshore wind turbine tower, forming a strain value acquisition unit. Determine the bridge arm coefficient for the aforementioned offshore wind turbine tower; Determine the elastic modulus and section modulus of the offshore wind turbine tower; The strain value of the target measurement section is obtained using a strain value acquisition unit for the target measurement section; Based on the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient, the dynamic bending moment value for the target measurement section is calculated; The dynamic bending moment value is polished to determine a smooth bending moment value; The smooth shear force value for the offshore wind turbine tower is calculated based on multiple smooth bending moment values ​​for different cross sections. The soil resistance value for the foundation component is calculated based on the smooth shear force value. Test results are generated using the smoothed bending moment value, the smoothed shear force value, and the soil resistance value.

2. The method according to claim 1, characterized in that, Multiple strain value acquisition units are arranged on the same vertical line, and the arrangement direction of the strain value acquisition units is determined based on the bending direction of the offshore wind turbine tower.

3. The method according to claim 1, characterized in that, The step of calculating the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient includes: The elastic modulus, the section modulus, the measured strain value, and the bridge arm coefficient are input into Formula 1 to calculate the dynamic bending moment value for the target measured section. Formula 1 is as follows: ME·W·ε 测 / AM Where M is the first dynamic bending moment value, E is the elastic modulus, W is the section modulus, and ε 测 Let A be the measured strain value, and let A be the bridge arm coefficient.

4. The method according to claim 3, characterized in that, The step of polishing the dynamic bending moment value to determine the smooth bending moment value includes: The dynamic bending moment value of the first measurement section from the top of the offshore wind turbine tower downwards is determined and converted to obtain the first initial bending moment value; The dynamic bending moment value of the second measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the second initial bending moment value; The dynamic bending moment value of the third measurement section from the top of the offshore wind turbine tower downwards is converted to obtain the third initial bending moment value; The dynamic bending moment value of the fourth measurement section downward from the top of the offshore wind turbine tower is determined and converted to obtain the fourth initial bending moment value; The dynamic bending moment value of the fifth measurement section downward from the top of the offshore wind turbine tower is determined to be the fifth initial bending moment value, which is obtained by conversion. The smoothing moment value is determined by the first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value.

5. The method according to claim 4, characterized in that, The step of determining the smooth bending moment value using the first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value includes: The first initial bending moment value, the second initial bending moment value, the third initial bending moment value, the fourth initial bending moment value, and the fifth initial bending moment value are input into Formula 2 to calculate the first smooth bending moment value of the first measurement section downward from the top of the offshore wind turbine tower, and the second smooth bending moment value of the second measurement section downward from the top of the offshore wind turbine tower. Formula 2 is as follows: in, M(x0-2h) is the first initial bending moment value; M(x0-h) is the second initial bending moment value; M(x0) is the third initial bending moment value; M(x0+h) is the fourth initial bending moment value; M(x0+2h) is the fifth initial bending moment value; This is the first smooth bending moment value; This is the second smooth bending moment value.

6. The method according to claim 5, characterized in that, Also includes: The sixth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section above the middle section of the offshore wind turbine tower. The seventh initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section upward from the middle section of the offshore wind turbine tower. The eighth initial bending moment value is obtained by converting the dynamic bending moment value of the intermediate section of the offshore wind turbine tower. The ninth initial bending moment value is obtained by converting the dynamic bending moment value of the first measurement section downward from the middle section of the offshore wind turbine tower. The tenth initial bending moment value is obtained by converting the dynamic bending moment value of the second measurement section downward from the middle section of the offshore wind turbine tower. The smoothing moment value is determined using the sixth initial bending moment value, the seventh initial bending moment value, the eighth initial bending moment value, the ninth initial bending moment value, and the tenth initial bending moment value.

7. The method according to claim 6, characterized in that, The step of determining the smooth bending moment value using the sixth initial bending moment value, the seventh initial bending moment value, the eighth initial bending moment value, the ninth initial bending moment value, and the tenth initial bending moment value includes: The sixth, seventh, eighth, ninth, and tenth initial bending moment values ​​are input into Formula 3 to calculate the third smooth bending moment value of the intermediate section of the offshore wind turbine tower. Formula 3 is as follows: in, M(x0-2h) is the sixth initial bending moment value; M(x0-h) is the seventh initial bending moment value; M(x0) is the eighth initial bending moment value; M(x0+h) is the ninth initial bending moment value; M(x0+2h) is the tenth initial bending moment value; This is the third smooth bending moment value.

8. The method according to claim 7, characterized in that, Also includes: The dynamic bending moment value of the fifth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to the eleventh initial bending moment value; The dynamic bending moment value of the fourth measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the twelfth initial bending moment value; The dynamic bending moment value of the third measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the thirteenth initial bending moment value; The dynamic bending moment value of the second measurement section downward from the bottom of the offshore wind turbine tower is determined and converted to obtain the fourteenth initial bending moment value; The dynamic bending moment value of the first measurement section downward from the bottom of the offshore wind turbine tower is converted to the fifteenth initial bending moment value; The smoothing moment value is determined using the eleventh initial bending moment value, the twelfth initial bending moment value, the thirteenth initial bending moment value, the fourteenth initial bending moment value, and the fifteenth initial bending moment value.

9. The method according to claim 8, characterized in that, The step of determining the smooth bending moment value using the eleventh initial bending moment value, the twelfth initial bending moment value, the thirteenth initial bending moment value, the fourteenth initial bending moment value, and the fifteenth initial bending moment value includes: The eleventh, twelfth, thirteenth, fourteenth, and fifteenth initial bending moment values ​​are input into Formula 4 to calculate the fourth smooth bending moment value at the second measurement section upwards from the bottom of the offshore wind turbine tower, and the fifth smooth bending moment value at the first measurement section upwards from the bottom of the offshore wind turbine tower. Formula 4 is as follows: in, M(x0-2h) is the eleventh initial bending moment value; M(x0-h) is the twelfth initial bending moment value; M(x0) is the thirteenth initial bending moment value; M(x0+h) is the fourteenth initial bending moment value; M(x0+2h) is the fifteenth initial bending moment value; This is the fourth smooth bending moment value; This is the fifth smooth bending moment value.

10. The method according to claim 9, characterized in that, The step of calculating the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different cross sections includes: Determine the length of the offshore wind turbine tower; The length of the offshore wind turbine tower, the first smooth bending moment value, the second smooth bending moment value, the third smooth bending moment value, the fourth smooth bending moment value, and the fifth smooth bending moment value are input into Formula 5 to calculate the smooth shear force value for the offshore wind turbine tower. Formula 5 is as follows: Wherein, Q(x0-2h), Q(x0-h), Q(x0), Q(x0+h), and Q(x0+2h) are the smooth shear force values, and is the length of the offshore wind turbine tower.

11. The method according to claim 10, characterized in that, The step of calculating the soil resistance value for the foundation member based on the smooth shear force value includes: Determine the diameter of the pile body of the offshore wind turbine tower; Substituting the pile diameter, the length of the offshore wind turbine tower, and the smooth shear force value into Formula Six, the soil resistance value for the offshore wind turbine tower is calculated. Formula Six is: Wherein, B is the diameter of the pile body.

12. The method according to claim 10, characterized in that, Also includes: Based on the pile diameter, the distribution map of the soil resistance value is obtained by the second derivative of the dynamic bending moment value.

13. A device for obtaining soil resistance of offshore wind turbine components, characterized in that, The device is used in an offshore wind turbine tower bending moment and shear force load testing system, including: The target measurement section determination module is used to determine the target measurement section for the offshore wind turbine tower. The offshore wind turbine tower bending moment and shear load testing system is equipped with a strain value acquisition unit for the target measurement section. The strain value acquisition unit includes a first strain gauge and a second strain gauge for the horizontal direction, and a third strain gauge and a fourth strain gauge for the vertical direction. The first strain gauge and the fourth strain gauge are arranged adjacently and vertically to form a first strain gauge group, and the second strain gauge and the third strain gauge are arranged adjacently and vertically to form a second strain gauge group. The first strain gauge group and the second strain gauge group are respectively arranged on both sides of the offshore wind turbine tower, forming a set of strain value acquisition units. The arm coefficient determination module is used to determine the arm coefficient for the offshore wind turbine tower. The tower elastic modulus and section modulus determination module is used to determine the tower elastic modulus and section modulus for the offshore wind turbine tower. A strain value acquisition module is used to acquire a strain value for the target measurement section using a strain value acquisition unit for the target measurement section; The dynamic bending moment calculation module is used to calculate the dynamic bending moment value for the target measurement section based on the elastic modulus, the section modulus, the measured strain value and the bridge arm coefficient. The smooth bending moment value determination module is used to polish the dynamic bending moment value and determine the smooth bending moment value; The smooth shear force calculation module is used to calculate the smooth shear force value for the offshore wind turbine tower based on multiple smooth bending moment values ​​for different sections. The soil resistance value calculation module is used to calculate the soil resistance value for the foundation component based on the smooth shear force value; The test result generation module is used to generate test results using the smoothed bending moment value, the smoothed shear force value, and the soil resistance value.

14. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; The memory is used to store computer programs; When the processor executes a program stored in the memory, it implements the method as described in any one of claims 1-12.

15. A computer-readable storage medium having instructions stored thereon that, when executed by one or more processors, cause the processors to perform the method as described in any one of claims 1-12.

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