Method and device for determining ultimate depth of scouring pit of tubular pile, medium and electronic equipment

Abstract

The invention provides a method and device for determining the ultimate depth of a scouring pit of an offshore photovoltaic pipe pile, a medium and electronic equipment, and relates to the field of offshore photovoltaic technologies. The method for determining the scouring pit limit depth of the offshore photovoltaic pipe pile comprises the steps that the pile periphery water depth, the pile diameter, the foundation pile plane arrangement coefficient and the foundation pile vertical arrangement coefficient of the offshore photovoltaic pipe pile and the soil body characteristics of the pile periphery soil body of the offshore photovoltaic pipe pile are obtained; obtaining the superposed water flow velocity around the offshore photovoltaic pipe pile; determining a target water body scouring factor of the offshore photovoltaic pipe pile under the water depth around the pile according to the superposed water flow velocity, the pile diameter and the water depth around the pile; and the scouring pit limit depth of the offshore photovoltaic pipe pile is determined based on the pile periphery water depth, the pile diameter, the foundation pile plane arrangement coefficient, the foundation pile vertical arrangement coefficient, the soil body characteristics and the target water body scouring factor. According to the invention, the limit depth of the scouring pit of the offshore photovoltaic pipe pile can be accurately determined.

Description

Technical Field

[0001] This disclosure relates to the field of offshore photovoltaic technology, and more specifically, to a method, apparatus, medium, and electronic equipment for determining the limit depth of the scour pit of offshore photovoltaic pipe piles. Background Technology

[0002] The interaction between the water flow around the offshore photovoltaic pipe pile and the seabed can affect the service life of the pipe pile. In order to ensure the stability and structural safety of the pipe pile, it is necessary to determine the limit depth of the scour pit.

[0003] However, the current method for determining the scour pit limit depth of pipe piles mainly relies on indoor flume model tests, with fewer field tests. These tests often overlook the combined effects of tidal currents and wave currents, indicating that the current method for determining the scour pit limit depth has low accuracy.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this disclosure is to provide a method, apparatus, medium, and electronic equipment for determining the scour pit limit depth of offshore photovoltaic pipe piles, thereby overcoming, to at least some extent, the problem of low accuracy in the determination process of the scour pit limit depth.

[0006] According to a first aspect of this disclosure, a method for determining the ultimate depth of scour pits for offshore photovoltaic (PV) pipe piles is provided, comprising: acquiring the water depth around the pile, pile diameter, foundation pile planar layout coefficient, foundation pile vertical layout coefficient, and soil characteristics of the soil around the offshore PV pipe pile; acquiring the horizontal and vertical ocean current velocities around the pile, and superimposing the vertical and horizontal ocean current velocities using a vector synthesis method to obtain a superimposed water flow velocity; determining the target water scour factor of the offshore PV pipe pile at the pile depth based on the superimposed water flow velocity, pile diameter, and water depth around the pile; and determining the ultimate depth of scour pits for the offshore PV pipe pile based on the water depth around the pile, pile diameter, foundation pile planar layout coefficient, foundation pile vertical layout coefficient, soil characteristics, and target water scour factor.

[0007] Optionally, the horizontal and vertical ocean current velocities around the offshore photovoltaic (PV) pipe pile are obtained, including: determining the horizontal velocity of the wave current at a target time point using a wave velocity meter, which is used as the horizontal ocean current velocity around the offshore PV pipe pile; obtaining data on the change of tide height over time at the location of the pile based on a tide table; and calculating the derivative of the tide height with respect to time at the target time point to determine the vertical velocity of the tidal current, which is used as the vertical ocean current velocity around the offshore PV pipe pile.

[0008] Optionally, the target water scour factor of the offshore photovoltaic (PV) pipe pile at the pile perimeter water depth is determined based on the superimposed water flow velocity, pile diameter, and pile perimeter water depth. This includes: calculating the superimposed water flow velocity and multiplying it by the pile diameter to determine the first water scour factor of the offshore PV pipe pile at the pile perimeter water depth; calculating the negative half power of the pile perimeter water depth and multiplying it by the negative half power of the gravitational acceleration to determine the second water scour factor of the offshore PV pipe pile at the pile perimeter water depth; and multiplying the first water scour factor and the second water scour factor to determine the intermediate water scour factor of the offshore PV pipe pile at the pile perimeter water depth, which is then used as the target water scour factor.

[0009] Optionally, the target water body scour factor is determined based on the intermediate water body scour factor, including: when there is no biological cover on the seabed where the offshore photovoltaic pipe pile is located, the intermediate water body scour factor is used as the target water body scour factor; when there is a biological cover on the seabed where the offshore photovoltaic pipe pile is located, the intermediate water body scour factor is multiplied by the biological corrosion resistance coefficient to obtain the target water body scour factor; wherein, the biological cover includes seagrass layer, coral layer or microbial film.

[0010] Optionally, the soil characteristics of the soil surrounding the offshore photovoltaic (PV) pipe pile are obtained, including: when the seabed where the offshore PV pipe pile is located is a seabed other than a silty seabed, determining the median particle size of the soil surrounding the offshore PV pipe pile as the soil characteristics of the soil surrounding the offshore PV pipe pile; when the seabed where the offshore PV pipe pile is located is a silty seabed, determining the equivalent particle size of the soil surrounding the offshore PV pipe pile as the soil characteristics of the soil surrounding the offshore PV pipe pile.

[0011] Optionally, determining the median particle size of the soil surrounding the offshore photovoltaic (PV) pipe pile includes: sampling, drying, and dispersing the soil around the pile to obtain a soil sample; mixing the soil sample with a dispersion medium to form a suspension; measuring the scattered light intensity distribution of the suspension using a laser particle size analyzer; and determining the particle size distribution of the soil sample based on the scattered light intensity distribution to determine the median particle size of the soil surrounding the offshore PV pipe pile.

[0012] Optionally, the method for determining the limit depth of the scour pit of offshore photovoltaic pipe piles also includes: when the offshore photovoltaic pipe piles and multiple adjacent pipe piles of the offshore photovoltaic pipe piles are concentratedly distributed, the foundation pile planar arrangement coefficient, the foundation pile vertical arrangement coefficient and the superimposed water flow velocity are respectively adaptively modified based on the form of the concentrated distribution and the position of the offshore photovoltaic pipe piles in the concentrated distribution.

[0013] According to a second aspect of this disclosure, a device for determining the ultimate depth of scour pits for offshore photovoltaic (PV) pipe piles is provided, comprising: a first data acquisition module for acquiring the water depth around the pile, pile diameter, foundation pile planar arrangement coefficient, foundation pile vertical arrangement coefficient, and soil characteristics of the soil around the offshore PV pipe pile; a second data acquisition module for acquiring the horizontal and vertical ocean current velocities around the pile, and superimposing the vertical and horizontal ocean current velocities using a vector synthesis method to obtain a superimposed water flow velocity; a first data processing module for determining the target water scour factor of the offshore PV pipe pile at the water depth around the pile based on the superimposed water flow velocity, pile diameter, and water depth around the pile; and a second data processing module for determining the ultimate depth of scour pits for the offshore PV pipe pile based on the water depth around the pile, pile diameter, foundation pile planar arrangement coefficient, foundation pile vertical arrangement coefficient, soil characteristics, and target water scour factor.

[0014] Optionally, the second data acquisition module is used to acquire the horizontal and vertical ocean current velocities around the offshore photovoltaic (PV) pipe pile, and further includes: determining the horizontal velocity of the wave current velocity at the target time point using a wave velocity meter, as the horizontal ocean current velocity around the offshore PV pipe pile; acquiring data on the change of tide height at the location of the pile over time based on the tide table at the location of the pile; and calculating the derivative of the tide height at the target time point with respect to time to determine the vertical velocity of the tidal current, as the vertical ocean current velocity around the offshore PV pipe pile.

[0015] Optionally, the first data processing module is used to determine the target water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile based on the superimposed water flow velocity, pile diameter, and water depth around the pile. It further includes: multiplying the superimposed water flow velocity and pile diameter to determine the first water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile; multiplying the negative half power of the water depth around the pile and the negative half power of the gravitational acceleration to determine the second water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile; and multiplying the first water scour factor and the second water scour factor to determine the intermediate water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile, which is used as the target water scour factor.

[0016] Optionally, the first data processing module is used to determine the target water body scour factor based on the intermediate water body scour factor, and further includes: when there is no biological cover layer on the seabed where the offshore photovoltaic pipe pile is located, using the intermediate water body scour factor as the target water body scour factor; when there is a biological cover layer on the seabed where the offshore photovoltaic pipe pile is located, multiplying the intermediate water body scour factor by the biological corrosion resistance coefficient to obtain the target water body scour factor; wherein, the biological cover layer includes seagrass layer, coral layer or microbial film.

[0017] Optionally, the first data acquisition module is used to acquire the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile, and further includes: when the seabed where the offshore photovoltaic pipe pile is located is a seabed other than a silty seabed, determining the median particle size of the soil surrounding the offshore photovoltaic pipe pile as the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile; when the seabed where the offshore photovoltaic pipe pile is located is a silty seabed, determining the equivalent particle size of the soil surrounding the offshore photovoltaic pipe pile as the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile.

[0018] Optionally, the first data acquisition module is used to determine the median particle size of the soil surrounding the offshore photovoltaic pipe pile, and further includes: sampling, drying and dispersing the soil around the pile to obtain a soil sample; mixing the soil sample with a dispersion medium to form a suspension; measuring the scattered light intensity distribution of the suspension using a laser particle size analyzer; and determining the particle size distribution of the soil sample based on the scattered light intensity distribution to determine the median particle size of the soil surrounding the offshore photovoltaic pipe pile.

[0019] Optionally, the method for determining the ultimate depth of the scour pit of the offshore photovoltaic pipe pile in the first data processing module further includes: when the offshore photovoltaic pipe pile and multiple adjacent pipe piles of the offshore photovoltaic pipe pile form a concentrated distribution, the foundation pile planar arrangement coefficient, the foundation pile vertical arrangement coefficient and the superimposed water flow velocity are respectively adaptively corrected based on the shape of the concentrated distribution and the position of the offshore photovoltaic pipe pile in the concentrated distribution.

[0020] According to a third aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method for determining the scour pit limit depth of any of the above-described methods for offshore photovoltaic pipe piles.

[0021] According to a fourth aspect of this disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; the processor is configured to implement the method for determining the scour pit limit depth of any of the above-described offshore photovoltaic pipe piles by executing the executable instructions.

[0022] In some embodiments of this disclosure, the scour data and superimposed velocity of the water flow of the offshore photovoltaic (PV) pipe pile are obtained. Then, based on the scour data and superimposed velocity, the water scour factor is determined, thereby determining the ultimate depth of the scour pit for the offshore PV pipe pile. On the one hand, this disclosure obtains data based on real-world pipe piles, rather than through simulation experiments, thus avoiding insufficient consideration of interfering factors. On the other hand, this disclosure considers the superimposed velocity of wave currents and tidal currents, better representing the effect of water flow scour, and thus the determined ultimate depth of the scour pit has high accuracy.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] Figure 1 The flowchart illustrates a method for determining the limit depth of the scour pit of offshore photovoltaic pipe piles.

[0026] Figure 2 A schematic diagram is shown of a multibeam echo sounder system measuring the depth of scour pits in offshore photovoltaic pipe piles.

[0027] Figure 3 This demonstrates how to calculate the net area of ​​the foundation slab for a group of seven pipe piles arranged in a quincunx pattern.

[0028] Figure 4 A comparison diagram showing the diameter of the pipe pile and the distance between the axes of two adjacent pipe piles is presented.

[0029] Figure 5 This diagram illustrates the vector addition of velocities in different directions for a selected particle.

[0030] Figure 6 A schematic diagram is shown in the case where a cover layer exists on the seabed.

[0031] Figure 7 A block diagram of a device for determining the scour pit limit depth of an offshore photovoltaic pipe pile according to an exemplary embodiment of the present disclosure is shown schematically.

[0032] Figure 8 A schematic diagram of the structure of an electronic device suitable for implementing embodiments of the present disclosure is shown. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more specific details omitted, or other methods, components, apparatus, steps, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0034] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0035] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all steps. For example, some steps may be broken down, while others may be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances. Furthermore, all terms such as "first," "second," etc., used below are for distinction purposes only and should not be construed as limiting the scope of this disclosure.

[0036] The various steps in the following method for assessing the safety of offshore photovoltaic pile foundations are performed by electronic devices. This disclosure does not limit the type of electronic device, such as a server, personal computer, or mobile device.

[0037] Figure 1 A flowchart illustrating a method for determining the ultimate depth of scour pits for offshore photovoltaic (PV) pipe piles according to an exemplary embodiment of this disclosure is shown schematically. (Reference) Figure 1 The method for determining the limit depth of the scour pit of offshore photovoltaic pipe piles may include the following steps:

[0038] S10. Obtain the water depth around the offshore photovoltaic pipe pile, pile diameter, foundation pile planar layout coefficient, foundation pile vertical layout coefficient, and soil characteristics of the soil around the offshore photovoltaic pipe pile.

[0039] In exemplary embodiments of this disclosure, such as Figure 2As shown, for photovoltaic (PV) pipe piles, the pile diameter can be obtained from the corresponding factory design drawings, and the water depth around the pile can be obtained through a multibeam echo sounder. The measurement coverage of the multibeam echo sounder is conical. In actual measurements, if there are areas that cannot be covered in one measurement, the sounding vessel can repeatedly circle around to conduct supplementary measurements.

[0040] A multibeam echo sounder system may include a multibeam transducer, an attitude sensor, and a sound velocity profiler. Specifically, the multibeam transducer is used to emit and receive sound waves. The attitude sensor is used to acquire the attitude data of the echo sounder, so as to correct the sound wave emission angle of the multibeam transducer in the multibeam echo sounder system in real time. The sound velocity profile data is used to acquire sound velocity profile data, so as to correct the water depth measured by the multibeam echo sounder system.

[0041] It should be noted that, in order to illustrate the measurement and calculation process of the scour pit of the offshore photovoltaic pile foundation more intuitively and clearly, the pile body of the offshore photovoltaic pile foundation is omitted in all the schematic diagrams in this disclosure. In actual implementation, the pile body of the offshore photovoltaic pile foundation needs to be taken into account.

[0042] Furthermore, the planar layout coefficient and vertical layout coefficient can be calculated based on the number of piles, rows, columns, pile diameter, and spacing between adjacent piles. When the soil around the pile is homogeneous and the calculation is performed for a single pile, the planar layout coefficient of the foundation pile is the ratio of the cross-sectional area of ​​the pile to the net area of ​​the foundation slab, and the vertical layout coefficient of the foundation pile is 1.

[0043] For a set of pipe piles, given the number of pipe piles is m, the number of rows is n1, the number of columns is n2, and the cross-sectional area of ​​the pipe piles is A. D If the total area occupied by the foundation slab (i.e., the pile group) is A, then the foundation pile layout coefficient η1 is:

[0044]

[0045] Taking actual figures as an example, such as Figure 3 Taking a group of seven pipe piles distributed in a plum blossom shape as an example, in the foundation pile plan layout coefficient, the number of piles is 7. The numerator is the sum of the cross-sectional areas of the seven pipe piles, and the denominator is the area of ​​the seabed occupied by the entire group of pipe piles minus the sum of the cross-sectional areas of the seven pipe piles.

[0046] The vertical arrangement coefficient η2 of foundation piles in homogeneous soil is:

[0047]

[0048] Where θ takes the following values:

[0049]

[0050] like Figure 4 As shown, D is the pile diameter, and d is the spacing between adjacent pipe piles, i.e., the distance between the centerlines of two adjacent pipe piles. Given the pile diameter and the spacing between adjacent pipe piles, the value of θ can be calculated, and thus the vertical arrangement coefficient of the plane piles can be obtained.

[0051] It should be noted that in actual engineering projects, if special soil conditions are encountered, the actual data obtained needs to be adjusted by taking into account factors such as soil quality, pile length, and pile inclination, or determined through on-site tests.

[0052] Regarding soil characteristics, when the soil around the pile is silty, the equivalent particle size is calculated using either the volume equivalent method or the settlement equivalent method. Generally, a laser particle size analyzer can directly output the volume equivalent particle size, which is the diameter of a sphere with the same volume as the actual particle. When the soil around the pile is of ordinary quality, the soil characteristic of the soil around the offshore photovoltaic pipe pile is the median particle size of the soil around the pile, which is the particle size value corresponding to a cumulative distribution ratio of 50%. The specific process is as follows:

[0053] First, soil samples are taken from the area surrounding the pile and dried to remove moisture. The dried soil samples are then dispersed to ensure complete deagglomeration of soil particles, preventing agglomeration from affecting test results. Next, the dispersed soil samples are mixed with a dispersion medium to form a homogeneous suspension. The dispersion medium can be deionized water or sodium hexametaphosphate solution. Then, a laser particle size analyzer is used to test the suspension, measuring the scattered light intensity distribution of the soil particles to obtain the light intensity distribution data of the soil sample. Finally, based on the measured scattered light intensity distribution, the particle size distribution curve of the soil sample is calculated, and the median particle size is determined as the soil characteristic of the area surrounding the pile.

[0054] S12. Obtain the horizontal and vertical ocean current velocities around the offshore photovoltaic pipe piles, and then superimpose the vertical and horizontal ocean current velocities using a vector synthesis method to obtain the superimposed water flow velocity.

[0055] In an exemplary embodiment of this disclosure, the actual water flow direction is a vector rather than a scalar. The tidal current velocity is calculated as the vertical water flow velocity, and the wave current velocity is calculated as the horizontal water flow velocity. Finally, the vectors are added together to sum the water flow velocities.

[0056] by Figure 5 For example, suppose a point mass is located close to the pipe pile and at a depth close to the initial scour pit depth of the pipe pile. Therefore, the vertical velocity of the ocean current relative to the point mass can be used to characterize the tidal velocity experienced by the pile, denoted as v. t The horizontal velocity of the wave relative to a particle can be used to characterize the wave velocity experienced by the pile, denoted as v. w .

[0057] In this case, for v t and v w By performing vector addition, the superimposed water flow velocity v of the mass points can be obtained, which can be used to characterize the water flow velocity around the pipe pile.

[0058] It is important to note that the wave velocity v w It can only be simplified to the horizontal water flow velocity, which is measured in real time by a current meter, while the wave velocity v w The vertical component of velocity is included in the tidal current velocity; this characteristic is relevant to the tidal current velocity v. t The same applies.

[0059] Trend Speed ​​v t It is obtained based on the change in tide height per unit time. Tide height is the actual sea level height in a specific area at a certain moment. It can be obtained from a known tide table or by using a tide gauge to measure the tide level in real time. Since tide level data is affected by tides, weather and other factors, it may change every minute. By recording the change in tide level per unit time, the tidal velocity per unit time can be obtained.

[0060] S14. Determine the target water scour factor of the offshore photovoltaic tube pile at the water depth around the pile based on the superimposed water flow velocity, pile diameter, and water depth around the pile.

[0061] In an exemplary embodiment of this disclosure, the intermediate water scour factor Q can be calculated using the superimposed water flow velocity v, pile diameter D, gravitational acceleration g, and current depth h of the scour pit, according to the following formula:

[0062] Q=(g- 0.5 ·h -0.5 ·v) 0.628 ·D

[0063] According to some embodiments of this disclosure, such as Figure 6 As shown, if there is a biological cover layer, such as seagrass, coral, or microbial film, on the soil around the pipe pile, the soil around the pile will be protected. Therefore, the intermediate water erosion factor Q can be multiplied by the biological corrosion resistance coefficient 0.7 to obtain the target water erosion factor Q. t If there is no cover material on the soil around the pile, the intermediate water scour factor Q can be directly used as the target water scour factor Q. t .

[0064] It should be noted that the bio-corrosion resistance coefficient of 0.7 is only a reference value. In actual calculations, different values ​​can be used for the bio-corrosion resistance coefficient for different types of bio-covers, such as seagrass layers, coral layers, and microbial films. If the thickness of the bio-cover changes, the bio-corrosion resistance coefficient can also be adapted accordingly.

[0065] S16. Determine the ultimate depth of the scour pit for offshore photovoltaic pipe piles based on the water depth around the pile, pile diameter, foundation pile planar layout coefficient, foundation pile vertical layout coefficient, soil characteristics, and target water scour factor.

[0066] In an exemplary embodiment of this disclosure, the median particle size or equivalent particle size is obtained as the soil characteristic of the soil surrounding the pile, and the target water erosion factor Q is obtained. t Then, the scour pit limit depth S of the offshore photovoltaic pipe pile can be calculated based on the following formula.

[0067]

[0068] Where D is the diameter of the offshore photovoltaic pipe pile, h is the current depth of the offshore photovoltaic pipe pile scour pit, η1 is the foundation pile plane layout coefficient, and η2 is the foundation pile vertical layout coefficient.

[0069] Figure 7 A block diagram schematically illustrates a device for determining the scour pit limit depth of an offshore photovoltaic pipe pile according to an exemplary embodiment of this disclosure. (Reference) Figure 7 The device 7 for determining the scour pit limit depth of offshore photovoltaic pipe piles according to an exemplary embodiment of the present disclosure may include a first data acquisition module 71, a second data acquisition module 73, a first data processing module 75, and a second data processing module 77.

[0070] Specifically, the first data acquisition module 71 can be used to acquire the water depth around the offshore photovoltaic pipe pile, the pile diameter, the foundation pile planar layout coefficient, the foundation pile vertical layout coefficient, and the soil characteristics of the soil around the offshore photovoltaic pipe pile.

[0071] According to an exemplary embodiment of this disclosure, the first data acquisition module 71 can be used to acquire the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile, and further includes: when the seabed where the offshore photovoltaic pipe pile is located is a seabed other than a silty seabed, determining the median particle size corresponding to the soil surrounding the offshore photovoltaic pipe pile as the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile; when the seabed where the offshore photovoltaic pipe pile is located is a silty seabed, determining the equivalent particle size corresponding to the soil surrounding the offshore photovoltaic pipe pile as the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile.

[0072] According to an exemplary embodiment of this disclosure, the first data acquisition module 71 can be used to determine the median particle size of the soil surrounding the offshore photovoltaic pipe pile, and further includes: sampling, drying and dispersing the soil surrounding the pile to obtain a soil sample; mixing the soil sample with a dispersion medium to form a suspension; measuring the scattered light intensity distribution of the suspension using a laser particle size analyzer; and determining the particle size distribution of the soil sample based on the scattered light intensity distribution to determine the median particle size of the soil surrounding the offshore photovoltaic pipe pile.

[0073] According to an exemplary embodiment of this disclosure, the second data acquisition module 73 can be used to acquire the horizontal and vertical ocean current velocities around the offshore photovoltaic pipe pile, and further includes: determining the horizontal velocity of the wave current velocity at a target time point using a wave velocity meter, as the horizontal ocean current velocity around the offshore photovoltaic pipe pile; acquiring data on the change of tide height at the location of the pile over time based on a tide table at the location of the pile; and calculating the derivative of the tide height at the target time point with respect to time to determine the vertical velocity of the tidal current velocity, as the vertical ocean current velocity around the offshore photovoltaic pipe pile.

[0074] According to an exemplary embodiment of this disclosure, the first data processing module 75 can be used to determine the target water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile based on the superimposed water flow velocity, pile diameter, and water depth around the pile. The module further includes: multiplying the superimposed water flow velocity and the pile diameter to determine a first water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile; multiplying the negative half power of the water depth around the pile and the negative half power of the gravitational acceleration to determine a second water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile; and multiplying the first water scour factor and the second water scour factor to determine an intermediate water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile, which is used as the target water scour factor.

[0075] According to an exemplary embodiment of this disclosure, the first data processing module 75 can be used to determine the target water body scour factor based on the intermediate water body scour factor, and further includes: when there is no biological cover layer on the seabed where the offshore photovoltaic pipe pile is located, using the intermediate water body scour factor as the target water body scour factor; when there is a biological cover layer on the seabed where the offshore photovoltaic pipe pile is located, multiplying the intermediate water body scour factor by the biological corrosion resistance coefficient to obtain the target water body scour factor; wherein, the biological cover layer includes seagrass layer, coral layer or microbial film.

[0076] According to an exemplary embodiment of this disclosure, the first data processing module 75 can be used in a method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles, which further includes: when the offshore photovoltaic pipe piles and multiple adjacent pipe piles of the offshore photovoltaic pipe piles are concentratedly distributed, the foundation pile planar arrangement coefficient, the foundation pile vertical arrangement coefficient, and the superimposed water flow velocity are each adaptively corrected based on the shape of the concentrated distribution and the position of the offshore photovoltaic pipe piles in the concentrated distribution.

[0077] Since the functional modules of the marine photovoltaic pile foundation safety assessment device of this disclosure are the same as those in the above-described method embodiments, they will not be described again here.

[0078] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code, which, when the program product is run on a terminal device, causes the terminal device to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure.

[0079] The program product for implementing the above-described method according to embodiments of the present disclosure may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0080] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical disks, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0081] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0082] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0083] Program code for performing the operations of this disclosure can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing devices can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0084] In an exemplary embodiment of this disclosure, an electronic device capable of implementing the above-described method is also provided.

[0085] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0086] The following reference Figure 8 To describe an electronic device 800 according to this embodiment of the present invention. Figure 8 The electronic device 800 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0087] like Figure 8 As shown, the electronic device 800 is presented in the form of a general-purpose computing device. The components of the electronic device 800 may include, but are not limited to: at least one processing unit 810, at least one storage unit 820, a bus 830 connecting different system components (including storage unit 820 and processing unit 810), and a display unit 840.

[0088] The storage unit stores program code, which can be executed by the processing unit 810 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of the present invention. For example, the processing unit 810 can perform actions such as... Figure 1 Steps S10 to S18 are shown in the diagram.

[0089] Storage unit 820 may include a readable medium in the form of a volatile storage unit, such as random access memory (RAM) 8201 and / or cache memory 8202, and may further include a read-only memory (ROM) 8203.

[0090] The storage unit 820 may also include a program / utility 8204 having a set (at least one) of program modules 8205, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0091] Bus 830 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0092] Electronic device 800 can also communicate with one or more external devices 900 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 800, and / or with any device that enables electronic device 800 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 850. Furthermore, electronic device 800 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 860. As shown, network adapter 860 communicates with other modules of electronic device 800 via bus 830. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 800, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0093] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0094] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of the present invention, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0095] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0096] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims. It should be understood that this disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for determining the ultimate depth of scour pits in offshore photovoltaic pipe piles, characterized in that, include: The water depth around the offshore photovoltaic pipe pile, pile diameter, foundation pile planar layout coefficient, foundation pile vertical layout coefficient, and soil characteristics of the soil around the offshore photovoltaic pipe pile are obtained. The horizontal and vertical ocean current velocities around the offshore photovoltaic pipe piles are obtained, and the vertical and horizontal ocean current velocities are superimposed using a vector synthesis method to obtain the superimposed water flow velocity. The target water scouring factor of the offshore photovoltaic tube pile at the water depth around the pile is determined based on the superimposed water flow velocity, the pile diameter, and the water depth around the pile. The ultimate depth of the scour pit for the offshore photovoltaic pipe pile is determined based on the water depth around the pile, the pile diameter, the planar layout coefficient of the foundation pile, the vertical layout coefficient of the foundation pile, the soil characteristics, and the scour factor of the target water body.

2. The method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles according to claim 1, characterized in that, Obtaining the horizontal and vertical ocean current velocities around the offshore photovoltaic pipe pile includes: The horizontal velocity of the wave current at the target time point is determined by a wave velocity meter and used as the horizontal ocean current velocity around the offshore photovoltaic pipe pile. Data on the change of tide height at the location of the pile over time is obtained from the tide table at the location of the pile. Calculate the derivative of the tide height with respect to time at the target time point to determine the vertical velocity of the tidal current, which is then used as the vertical ocean current velocity around the offshore photovoltaic pipe pile.

3. The method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles according to claim 1, characterized in that, The target water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile is determined based on the superimposed water flow velocity, the pile diameter, and the water depth around the pile, including: Calculate the superimposed water flow velocity and the pile diameter to determine the first water scour factor of the offshore photovoltaic tube pile at the water depth around the pile; The negative half power of the water depth around the pile and the negative half power of the gravitational acceleration are multiplied to determine the second water scouring factor of the offshore photovoltaic pipe pile at the water depth around the pile. Multiply the first water scour factor and the second water scour factor to determine the intermediate water scour factor of the offshore photovoltaic pipe pile at the water depth around the pile. The target water body scour factor is determined based on the intermediate water body scour factor.

4. The method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles according to claim 3, characterized in that, Determining the target water body scour factor based on the intermediate water body scour factor includes: In the absence of biological cover on the seabed where the offshore photovoltaic pipe piles are located, the intermediate water scour factor is used as the target water scour factor. In the case where there is a biological cover layer on the seabed where the offshore photovoltaic pipe pile is located, the intermediate water scour factor is multiplied by the biological corrosion resistance coefficient to obtain the target water scour factor; wherein, the biological cover layer includes seagrass layer, coral layer or microbial film.

5. The method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles according to claim 1, characterized in that, Obtaining the soil characteristics of the soil surrounding the offshore photovoltaic pipe pile includes: When the seabed where the offshore photovoltaic pipe pile is located is a seabed other than a silty seabed, the median particle size of the soil around the offshore photovoltaic pipe pile is determined as the soil characteristic of the soil around the offshore photovoltaic pipe pile. When the seabed where the offshore photovoltaic pipe pile is located is a silty seabed, the equivalent particle size of the soil around the offshore photovoltaic pipe pile is determined as the soil characteristic of the soil around the offshore photovoltaic pipe pile.

6. The method for determining the ultimate depth of the scour pit of offshore photovoltaic pipe piles according to claim 5, characterized in that, Determining the median particle size of the soil surrounding the offshore photovoltaic pipe pile includes: The soil around the pile is sampled, dried, and dispersed to obtain soil samples from the soil around the pile. The soil sample is mixed with a dispersion medium to form a suspension; The intensity distribution of scattered light in the suspension was measured using a laser particle size analyzer. The particle size distribution of the soil sample is determined based on the scattered light intensity distribution, so as to determine the median particle size of the soil surrounding the offshore photovoltaic pipe pile.

7. The method for determining the limit depth of scour pits for offshore photovoltaic pipe piles according to claim 1, characterized in that, The method for determining the ultimate depth of the scour pit of the offshore photovoltaic pipe pile also includes: When the offshore photovoltaic pipe piles and multiple adjacent pipe piles of the offshore photovoltaic pipe piles form a concentrated distribution, the planar arrangement coefficient of the foundation piles, the vertical arrangement coefficient of the foundation piles, and the superimposed water flow velocity are each adjusted accordingly based on the shape of the concentrated distribution and the position of the offshore photovoltaic pipe piles in the concentrated distribution.

8. A device for determining the ultimate depth of scour pits in offshore photovoltaic pipe piles, characterized in that, include: The first data acquisition module is used to acquire the water depth around the offshore photovoltaic pipe pile, the pile diameter, the foundation pile plane layout coefficient, the foundation pile vertical layout coefficient, and the soil characteristics of the soil around the offshore photovoltaic pipe pile. The second data acquisition module is used to acquire the horizontal and vertical ocean current velocities around the offshore photovoltaic pipe pile, and to superimpose the vertical and horizontal ocean current velocities using a vector synthesis method to obtain the superimposed water flow velocity. The first data processing module is used to determine the target water scouring factor of the offshore photovoltaic pipe pile at the water depth around the pile based on the superimposed water flow velocity, the pile diameter and the water depth around the pile. The second data processing module is used to determine the ultimate depth of the scour pit of the offshore photovoltaic pipe pile based on the water depth around the pile, the pile diameter, the planar layout coefficient of the foundation pile, the vertical layout coefficient of the foundation pile, the soil characteristics, and the scour factor of the target water body.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the method for determining the scour pit limit depth of offshore photovoltaic pipe piles as described in any one of claims 1 to 7.

10. An electronic device, characterized in that, include: processor; A memory for storing one or more programs, which, when executed by the processor, cause the processor to implement the method for determining the scour pit limit depth of offshore photovoltaic pipe piles as described in any one of claims 1 to 7.

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