Underwater foundation scouring protection range determination method, computer equipment, storage medium and program product

Abstract

The invention relates to the technical field of underwater construction engineering, and discloses an underwater foundation scouring protection range determination method, computer equipment, a storage medium and a program product, and the method comprises the steps: obtaining ocean current and ocean wave data, and survey data of a seabed where an underwater foundation is located; calculating the undisturbed Hiltz number of the basic far field, the seabed sediment starting critical Hiltz number and the flow-wave ratio; according to the undisturbed Hiltz number of the basic far field, the seabed sediment starting critical Hiltz number and the relation between the flow-wave ratio and the scouring range, a correlation model is established; according to the method, analysis is conducted from sediment dynamics and hydrodynamics theories, the analysis method is clear in theory, high in applicability, accurate and reliable in analysis conclusion, clear in mechanism and more scientific, and an effective evaluation method can be provided for engineering designers; and the method can be used for calculating the scour protection range of the sandy soil and clay seabed under the wave-current coupling effect, and the universality is high.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater construction engineering, and in particular to a method for determining an underwater foundation scour protection range, computer equipment, storage medium and program product. Background Art

[0002] Pile foundations are widely used in various aquatic structures, including bridges, offshore oil and gas projects, and offshore wind power projects. Under the influence of the flow field, the pile foundations are subjected to the scouring effect of waves and currents, which can cause the surrounding sediment to be carried away, thereby forming scour pits. This leads to a decrease in the bearing capacity of the pile foundation and the natural frequency of the entire structure, threatening the safety and stability of the aquatic structure. Therefore, it is necessary to take necessary protective measures against scour around the foundation.

[0003] In the existing technology, the method for determining the scour protection range of underwater foundations usually relies on empirical calculations, or calculates the balanced scour depth around the pile foundation and then estimates it using existing empirical formulas. All of the above methods have the problem of error accumulation, which leads to inaccurate calculation of the scour range. Summary of the Invention

[0004] In view of this, the present invention provides a method for determining the scour protection range of an underwater foundation, a computer device, a storage medium and a program product to solve the problem of inaccurate calculation of the scour range of an underwater pile foundation in the prior art.

[0005] In a first aspect, the present invention provides a method for determining an underwater foundation scour protection range, comprising:

[0006] Obtain ocean current and wave data, as well as survey data of the seabed where the underwater foundation is located;

[0007] Calculate the undisturbed Shields number θ0 of the basic far field and the critical Shields number θ of the seabed sediment cr , flow ratio U cw ;

[0008] A correlation model is established based on the relationship between the undisturbed Shields number of the basic far field, the critical Shields number for initiation of seabed sediment, the flow-wave ratio and the scour range.

[0009] The scope of scour protection is determined based on the correlation model.

[0010] Beneficial effects: The present invention analyzes the sediment dynamics and hydrodynamics theories, establishes the correlation between the bed shear stress amplification effect and the scour range by analyzing the flow field around the pile foundation, constructs a correlation model, and obtains the scour protection range of the underwater pile foundation. The analysis method has clear theory and strong applicability, accurate and reliable analysis conclusions, clear mechanism, and is more scientific, which can provide an effective evaluation method for engineering designers; and this method can be used to calculate the scour protection range of sand and clay seabeds under the action of wave-current coupling, and has strong universality.

[0011] In an optional embodiment, the method for determining the underwater foundation scour protection range further includes:

[0012] Build a test system;

[0013] Conduct scouring tests under different flow ratios and water flow intensities in the test system to determine the lateral scouring range;

[0014] Establish a three-dimensional numerical flume model;

[0015] The three-dimensional numerical flume model is calibrated using the test data;

[0016] The distribution of bed shear stress amplification coefficient under different flow-wave ratios is calculated using a three-dimensional numerical flume.

[0017] According to the bed shear stress amplification coefficient value corresponding to the horizontal scour range of the test, the critical bed shear stress amplification coefficient value as the scour boundary is determined.

[0018] In an optional embodiment, a correlation model is established between the lateral scour protection range and the relationship between the undisturbed Shields number of the foundation far field, the critical Shields number for seabed sediment initiation, and the flow-wave ratio based on the coordinates of the critical bed shear stress amplification coefficient value of the scour boundary.

[0019] In an optional embodiment, the correlation model is:

[0020] when

[0021] R is the scour protection range, D is the basic diameter, θ0 is the undisturbed Shields number of the basic far field, θ cr is the critical Shields number for seabed sediment initiation, U cw is the stream-wave ratio, and a, b, and c are coefficients.

[0022] Beneficial effects: The present invention has simple input parameters, clear physical meaning, and convenient calculation method, and can be used to calculate the foundation scour protection range under various flow fields such as water flow, waves, and wave-current coupling.

[0023] In an optional implementation, a=1.4, b=0.5, and c=0.5 are determined by fitting numerical simulation results.

[0024] In an optional embodiment, the method for determining the underwater foundation scour protection range further includes:

[0025] Verify whether the accuracy of the correlation model meets the requirements.

[0026] In an optional embodiment, the basic scour protection range is the scour range in the direction perpendicular to the basic flow direction.

[0027] In a second aspect, the present invention also provides a computer device comprising a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the above-mentioned method for determining the underwater foundation scour protection range by executing the computer instructions.

[0028] In a third aspect, the present invention further provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the above-mentioned method for determining the underwater foundation scour protection range.

[0029] In a fourth aspect, the present invention further provides a computer program product, comprising computer instructions, which are used to enable a computer to execute the above-mentioned method for determining the scope of underwater foundation scour protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 Schematic diagram of the flow of a method for determining an underwater foundation scour protection range according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the test system structure in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of numerical simulation analysis of a method for determining an underwater foundation scour protection range according to an embodiment of the present invention;

[0034] Figure 4 : is a distribution diagram of bed shear stress amplification coefficient under different combinations of water flow and waves in an embodiment of the present invention;

[0035] Figure 5Schematic diagram of test results of a method for determining an underwater foundation scour protection range according to an embodiment of the present invention;

[0036] Figure 6 In the embodiment of the present invention, R / D changes with θ0 / θ cr and U cw Change graph;

[0037] Figure 7 This is a comparison chart between the correlation model prediction and the experimental measurement in the embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the scouring plane in an embodiment of the present invention;

[0039] Figure 9 Schematic diagram of the hardware structure of a computer device in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0041] The following combination Figures 1 to 9 , describing embodiments of the present invention.

[0042] According to an embodiment of the present invention, on the one hand, Figure 1 As shown, a method for determining the scope of underwater foundation scour protection is provided, comprising:

[0043] Obtain ocean current and wave data, as well as survey data of the seabed where the underwater foundation is located;

[0044] Calculate the undisturbed Shields number θ0 of the basic far field and the critical Shields number θ of the seabed sediment cr , flow ratio U cw ;

[0045] A correlation model is established based on the relationship between the undisturbed Shields number of the basic far field, the critical Shields number for initiation of seabed sediment, the flow-wave ratio and the scour range.

[0046] The scope of scour protection is determined based on the correlation model.

[0047] Specifically, in this embodiment, the environment in which the pile foundation is located is not specifically limited. For example, in this embodiment, the pile foundation can be constructed on a non-cohesive seabed, a silt seabed, a clay seabed, etc.

[0048] In this embodiment, water flows through the pile foundation, compressing the flow cross-section, thereby accelerating the flow. The pile foundation also alters the flow field around it, forming a complex vortex system. If the water flow intensity meets the starting conditions for the bed soil around the foundation, the vortex around the foundation will disrupt the equilibrium of the bed soil particles, causing them to move from a static state and be carried away by the water flow. This will cause erosion of the bed surface around the pile foundation and produce localized scour.

[0049] Without protective measures, a monopile foundation subjected to unidirectional flow will form a specific scour pattern. The scour pit is wider in the direction of the water flow, while it is narrower in the direction perpendicular to the water flow, forming an irregular elliptical scour pit overall.

[0050] In this embodiment, the method for determining the underwater foundation scour protection range includes the following steps:

[0051] In this embodiment, the design flow velocity U can be determined based on the ocean hydrological and geological exploration data of the pile foundation engineering site in the early stage, and the ocean current and wave data can be obtained. c , wave height H, wave period T, wavelength L, wave oscillation velocity U wm , median particle size d 50 , sediment density s and water depth h and other data, calculate the sea area current wave ratio U cw Characterizes the intensity ratio of water flow and waves. Its physical meaning is the ratio of water flow velocity to the maximum wave-current coupling velocity. The undisturbed Shields number θ0 of the pile foundation far field refers to the ratio of the shear stress of the water flow on the seabed surface to the underwater gravity of the sediment. It characterizes the intensity of wave-current coupling scour. The critical Shields number θ for the initiation of seabed sediment is determined based on field soil samples. cr The Shields number threshold at which sediment particles begin to move characterizes the seabed's resistance to scour. A physical model test system is constructed to simulate the scouring of pile foundations by currents and waves in the sea, and to obtain seabed survey data in the test system.

[0052] In this embodiment, the calculation steps of the undisturbed Shields number θ0 of the pile foundation far field are as follows:

[0053] First, based on the seawater velocity and water depth at the pile foundation, the bed shear stress τ when the water flow around the pile foundation acts alone is calculated. c :

[0054] τ c =ρC D U c 2 (1)

[0055]

[0056] Wherein the design flow rate U cis the vertical average velocity, which can be taken as the ocean current velocity; ρ is the water density; h is the water depth; κ is the Karman constant, which is taken as 0.4; z0 is the roughness height, which is taken as d 50 / 12.

[0057] At the same time, the maximum bed shear stress τ around the pile foundation when the wave acts alone can be calculated based on the wave period, wavelength and wave height in the area where the pile foundation is located. w :

[0058]

[0059] Where T is the design wave period, U wm is the wave oscillation velocity, calculated using linear wave theory, and the calculation method is as follows:

[0060] U wm =πHcosh(kD / 2) / Tsinh(kh)(5)

[0061] Where H is the design wave height, T is the design wave period, h is the water depth, k is the wave number, and D is the pile foundation diameter.

[0062] Then τ c and τ w Substitute the following formula to calculate the average bed shear stress τ during the next wave cycle under the combined action of waves and currents: m :

[0063]

[0064] Finally, the undisturbed Shields number θ0 of the far-field pile foundation is calculated based on the average bed shear stress, the sediment density, and the median sediment size in the field:

[0065]

[0066] Where g is the acceleration of gravity; s is the specific gravity of sediment; d 50 is the median particle size of sediment; τ max It is the maximum bed shear stress in one wave cycle under the combined action of wave and current.

[0067] τ max The calculation method is:

[0068]

[0069] Where, It is the angle between the wave and the current direction, and is 0° when the wave and current directions are consistent.

[0070] Critical Shields number θ for the initiation of seabed sediment movement cr The calculation method is as follows:

[0071] First, the dimensionless sand particle size D in the area where the pile foundation is located is calculated based on the fluid kinematic viscosity of the area where the pile foundation is located. * :

[0072] D * =d 50 [(s-1)g / v 2 ] 1 / 3 (9)

[0073] Where v represents the kinematic viscosity of the fluid.

[0074] Then, according to the dimensionless sand particle size, the critical Shields number θ for the initiation of seabed sediment in the area is calculated: cr :

[0075] θ cr =0.3 / (1+1.2D*)+0.055[1-exp(-0.02D*)] (10)

[0076] In this embodiment, the water flow velocity is obtained and recorded by a current meter, and the wave data is obtained and recorded by a wave height meter.

[0077] In this embodiment, the flow-wave ratio U cw The calculation method is:

[0078] U cw =U c / (U c +U wm )(11)

[0079] In one embodiment, the method for determining the underwater foundation scour protection range further includes:

[0080] Build a test system;

[0081] Conduct scour tests under different flow ratios and water flow intensities in the test system to determine the lateral scour range;

[0082] Establish a three-dimensional numerical flume model;

[0083] The three-dimensional numerical water tank is calibrated using the test data;

[0084] The distribution of bed shear stress amplification coefficient under different flow-wave ratios is calculated using a three-dimensional numerical flume.

[0085] According to the bed shear stress amplification coefficient value corresponding to the horizontal scour range of the test, the critical bed shear stress amplification coefficient value as the scour boundary is determined.

[0086] Specifically, if Figure 2As shown, the test system constructed in this embodiment includes: a water tank, foundation piles, a wave height meter, a current meter, a camera, a wave generator and a water flow generator. The water tank contains water and a sand bed, the sand bed is located below the water body, the foundation piles are vertically arranged in the sand bed, and the foundation piles are made of transparent material. The wave height meter is arranged in the water tank and is suitable for measuring the height of water waves. The current meter is arranged in the water tank and is suitable for measuring the flow rate of water. The camera is arranged in the foundation pile and is suitable for recording sand bed scouring data. The wave generator is arranged in the water tank and the water flow generator is arranged in the water tank.

[0087] In this embodiment, a sand bed is set in the middle of the water tank, and a pile foundation is inserted in the center of the sand bed. The pile foundation adopts a transparent tube with a bottom. A camera is installed in the tube to monitor the sand scouring data during the test. A wave generator and a water flow generator are set at one end of the water tank to determine the working conditions. A wave height meter and a flow meter are set in the water body to record wave and flow rate data.

[0088] In this embodiment, the experimental results of the scouring test are used to verify the accuracy of the model in this embodiment. The experimental device is as follows: Figure 2 As shown in Figure 1. A piston-type wave maker located at the upstream end of the flume generated regular waves, while a flow generator produced a steady flow. Unperturbed flow parameters were measured 0.12 meters from the flume bottom using an electromagnetic velocimeter, and the water surface was recorded using a wave height meter. These measurements were used as input parameters in the simulation. Scour depth variations were measured using videos captured by cameras inside the foundation piles, and the water-sand interface was derived from time-stamped images using markers affixed to the pile surface.

[0089] In this embodiment, a specific water flow and wave combination (current-wave ratio U cw ) was used to determine the lateral scour range, and the verification test result was R / D=1.65+0.5=2.15.

[0090] In this embodiment, Figure 3 As shown, a three-dimensional foundation scour numerical model is established in computational fluid dynamics (CFD) software. In this embodiment, there is no limitation on the CFD software. For example, in this embodiment, the CFD software can be FLOW-3D, ANSYS Fluent, CFX, COMSOL Multiphysics, etc., and the numerical model is calibrated using experimental data.

[0091] In this embodiment, the calibration method is as follows:

[0092] A three-dimensional foundation scour model is constructed, including the governing equations, turbulence model, and sand bed deformation model.

[0093] In this embodiment, the flow field around the foundation is simulated by solving the incompressible Navier-Stokes equations and using a large eddy simulation (LES) turbulence model to achieve closure.

[0094] Based on the sediment mass balance, the sand bed morphology around the foundation is updated by solving the bedload transport model and the suspended load transport model.

[0095] A three-dimensional simulation model with the same dimensions as the test system was established, and the three-dimensional foundation scouring process was simulated using the test prototype test parameters. By comparing and analyzing the original flow velocity and scouring depth development between the calculated results and the experimental results, the accuracy of the simulation model was verified and the parameters were adjusted. The final error was required to be kept within 5%.

[0096] In this embodiment, Figure 4 As shown in the figure, after calibrating the simulation model using the test data, the different combinations of water flow and waves (i.e., the flow-wave ratio U cw ) under the test system, the distribution of the bed shear stress amplification coefficient is considered. Considering the sediment initiation condition, the Shields number θ=Mθ0 at a point around the foundation pile is greater than the critical Shields number θ of the sediment. cr , according to the shear stress amplification coefficient value corresponding to the horizontal scour range of the test, determine the critical value of the scour boundary. Figure 5 As shown, in this embodiment, the lateral scour range under the verification condition is R / D = 2.15, and M cr =1.7 is taken as the critical value of the scour boundary.

[0097] In this embodiment, the shear stress amplification coefficient value is calculated as follows:

[0098]

[0099] Where θ is the Shields number of the bed surface around the foundation after the flow field is disturbed by the foundation, and U is the bed surface flow velocity around the foundation after the flow field is disturbed by the foundation.

[0100] In one embodiment, a correlation model is established between the lateral scour protection range and the relationship between the undisturbed Shields number of the foundation far field, the critical Shields number for seabed sediment initiation, and the flow-wave ratio based on the coordinates of the critical bed shear stress amplification coefficient value of the scour boundary.

[0101] The present invention uses sediment dynamics and hydrodynamics theory to analyze the flow field around the pile foundation, establishes a correlation between the bed shear stress amplification effect and the scour range, constructs a correlation model, and obtains the scour protection range of the underwater pile foundation. This analysis method has clear theory, strong applicability, accurate and reliable analysis conclusions, a clear mechanism, and is more scientific, which can provide an effective evaluation method for engineering designers; and this method can be used to calculate the scour protection range of sand and clay seabeds under the action of wave-current coupling, and has strong universality.

[0102] In one embodiment, Figure 6 As shown in the figure, according to the M of the scour boundary in different simulation conditions cr The coordinates of the value are plotted, and the lateral scour protection range R / D is plotted as a function of θ0 / θ cr and U cw The correlation model is established as follows:

[0103]

[0104] Where R is the scour protection range, D is the base diameter, θ0 is the undisturbed Shields number of the base far field, and θ cr is the critical Shields number for seabed sediment initiation, U cw is the stream-wave ratio, and a, b, and c are coefficients.

[0105] The invention has simple input parameters, clear physical meaning and convenient calculation method, and can be used to calculate the foundation scour protection range under various flow fields such as water flow, wave and wave-current coupling.

[0106] In one embodiment, a=1.4, b=0.5, and c=0.5 are determined by fitting numerical simulation results.

[0107] Specifically, the fitted correlation model in this embodiment is:

[0108]

[0109] In one embodiment, the method for determining the underwater foundation scour protection range further includes:

[0110] Verify whether the accuracy of the correlation model meets the requirements.

[0111] Specifically, if Figure 7 As shown, the correlation model in this embodiment has been verified by working condition tests to have an accuracy within 25%, which meets the requirements.

[0112] In one embodiment, the basic scour protection range is the scour range in the basic perpendicular flow direction.

[0113] Specifically, if Figure 8As shown in some coastal waters with strong tidal currents, obvious gullies will be formed around the foundation due to scouring in the direction of the tidal flow. Considering the protection cost, the horizontal scouring range perpendicular to the flow direction is generally used as the protection range.

[0114] An embodiment of the present invention further provides a computer device for executing the above-mentioned method for determining the underwater foundation scour protection range.

[0115] See also Figure 9 , Figure 9 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 9 As shown, the computer device includes: one or more processors 10, memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components utilize different buses to communicate with each other and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in the memory or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Equally, multiple computer devices can be connected, and each device provides part of the necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 9 A processor 10 is taken as an example.

[0116] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0117] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method for determining the underwater foundation scour protection range shown in the above embodiment.

[0118] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0120] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0121] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or as a computer code that can be recorded in a storage medium, or downloaded through a network and originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium. Thus, the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk, or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the method for determining the underwater foundation scour protection range shown in the above embodiment is implemented.

[0122] A portion of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the form in which the computer program instruction exists in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc. Accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium that can be accessed by the computer.

[0123] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for determining the scope of underwater foundation scour protection, characterized in that: include: Obtain ocean current and wave data, as well as survey data of the seabed where the underwater foundation is located; Calculate the undisturbed Shields number θ0 of the basic far field and the critical Shields number θ of the seabed sediment cr , flow ratio U cw ; A correlation model is established based on the relationship between the undisturbed Shields number of the basic far field, the critical Shields number for initiation of seabed sediment, the flow-wave ratio and the scour range. The scope of scour protection is determined based on the correlation model.

2. The method for determining the underwater foundation scour protection range according to claim 1, characterized in that: Also includes: Build a test system; Conduct scouring tests under different flow ratios and water flow intensities in the test system to determine the lateral scouring range; Establish a three-dimensional numerical flume model; The three-dimensional numerical water tank is calibrated using the test data; The distribution of bed shear stress amplification coefficient under different flow-wave ratios is calculated using a three-dimensional numerical flume. According to the bed shear stress amplification coefficient value corresponding to the horizontal scour range of the test, the critical bed shear stress amplification coefficient value as the scour boundary is determined.

3. The method for determining the underwater foundation scour protection range according to claim 2, characterized in that: According to the coordinates of the critical bed shear stress amplification coefficient value of the scour boundary, a correlation model is established between the lateral scour protection range and the relationship between the undisturbed Shields number of the foundation far field, the critical Shields number for seabed sediment initiation, and the flow-wave ratio.

4. The method for determining the underwater foundation scour protection range according to claim 2, characterized in that: The correlation model is: R is the scour protection range, D is the basic diameter, θ0 is the undisturbed Shields number of the basic far field, θ cr is the critical Shields number for seabed sediment initiation, U cw is the stream-wave ratio, and a, b, and c are coefficients.

5. The method for determining the underwater foundation scour protection range according to claim 2, characterized in that: Through fitting of numerical simulation results, it is determined that a=1.4, b=0.5, and c=0.

5.

6. The method for determining the underwater foundation scour protection range according to claim 2 or 3, characterized in that: Also includes: Verify whether the accuracy of the correlation model meets the requirements.

7. The method for determining underwater foundation scour protection range according to claim 1, characterized in that: The foundation scour protection range is the scour range in the direction perpendicular to the foundation flow.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for determining the underwater foundation scour protection range according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the underwater foundation scour protection range determination method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the method for determining the underwater foundation scour protection range according to any one of claims 1 to 6.

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