Method and device for evaluating dynamic bearing performance of anchoring foundation

Abstract

The invention relates to the technical field of power bearing performance evaluation of suction anchors, and discloses a method and device for evaluating the power bearing performance of an anchoring foundation, and the method comprises the steps: obtaining geometric parameters of a target suction anchor foundation and soil property parameters of a soil body around the target suction anchor; constructing a dynamic impedance function of a side wall anchor ear point of the suction anchor based on the target suction anchor basic geometric parameter and the soil property parameter of the soil body around the target suction anchor, and calculating a dynamic response value of the target suction anchor under the action of the mooring force based on the dynamic impedance function of the side wall anchor ear point of the suction anchor and the target suction anchor basic geometric parameter; and finally, evaluating the dynamic bearing performance of the anchoring foundation based on the dynamic response value of the suction anchor under the action of the mooring force to obtain an evaluation result of the dynamic bearing performance of the anchoring foundation, thereby improving the calculation efficiency of the evaluation of the dynamic bearing performance of the anchoring foundation, meeting the high-efficiency requirement of engineering design, and being suitable for popularization and application. And a technical support and an analysis means are provided for the design of the power ultimate bearing capacity of the offshore floating type fan suction anchor foundation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suction anchor dynamic bearing performance evaluation, and particularly relates to a method and device for evaluating the dynamic bearing performance of an anchor foundation. BACKGROUND

[0002] With the continuous development of offshore wind power development towards the deep sea, floating wind turbine foundations gradually become the main form of deep-sea wind energy development and utilization. Floating wind turbines usually use suction anchor foundations for anchoring positioning. The safety and bearing performance of the suction anchor foundation are crucial to the stable operation of the entire system.

[0003] However, the related method for evaluating the dynamic bearing performance of the anchor foundation has low calculation efficiency, which cannot meet the efficient needs of engineering design. SUMMARY

[0004] Therefore, the present application provides a method and device for evaluating the dynamic bearing performance of an anchor foundation to solve the problem of low calculation efficiency of the related method for evaluating the dynamic bearing performance of the anchor foundation, which cannot meet the efficient needs of engineering design.

[0005] In a first aspect, the present application provides a method for evaluating the dynamic bearing performance of an anchor foundation, which comprises:

[0006] obtaining the geometric parameters of a target suction anchor foundation and the soil property parameters of the soil around the target suction anchor;

[0007] constructing a dynamic impedance function of the anchor ear point of the side wall of the target suction anchor based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor;

[0008] calculating the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the anchor ear point of the side wall of the target suction anchor and the geometric parameters of the target suction anchor foundation;

[0009] evaluating the dynamic bearing performance of the anchor foundation based on the dynamic response value of the target suction anchor under the mooring force to obtain the evaluation result of the dynamic bearing performance of the anchor foundation.

[0010] The evaluation method for the dynamic bearing performance of the anchoring foundation provided by the embodiment, by obtaining the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor, constructing the dynamic impedance function of the suction anchor ear point of the side wall based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor, and calculating the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the suction anchor ear point of the side wall and the geometric parameters of the target suction anchor foundation, finally, the dynamic bearing performance of the anchoring foundation is evaluated based on the dynamic response value of the target suction anchor under the mooring force, and the dynamic bearing performance evaluation result of the anchoring foundation is obtained, the calculation efficiency of the dynamic bearing performance evaluation of the anchoring foundation is improved, the efficient demand of engineering design is met, and key technical support and necessary analysis means are provided for the dynamic ultimate bearing capacity design of the suction anchor foundation of the offshore floating wind turbine.

[0011] In an optional embodiment, the dynamic impedance function of the suction anchor ear point of the side wall is constructed based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor, comprising:

[0012] The horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, and the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation are calculated based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor;

[0013] The dynamic impedance matrix at the center of the bottom of the target suction anchor foundation is constructed based on the horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, and the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation;

[0014] The dynamic impedance matrix at the center of the bottom of the target suction anchor foundation is transformed in coordinates to obtain the dynamic impedance function of the suction anchor ear point of the side wall.

[0015] The evaluation method for the dynamic bearing performance of the anchoring foundation provided in the embodiment improves the accuracy of structural dynamic analysis, guarantees the rationality of the dynamic impedance function of the anchor ear point of the side wall of the suction anchor, accurately depicts the interaction between the target suction anchor and the soil dynamics, provides a quantitative basis for the evaluation of the dynamic bearing performance of the anchoring foundation, and accurately constructs the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation based on the horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, as well as the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation, so as to realize the accurate characterization of the dynamic performance of the anchor ear stress point, and further guarantee the accuracy of the evaluation of the dynamic bearing performance of the anchoring foundation.

[0016] In an optional implementation, the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation is subjected to coordinate transformation to obtain the dynamic impedance function of the anchor ear point of the side wall of the suction anchor; wherein the expression of the dynamic impedance function of the anchor ear point of the side wall of the suction anchor is:

[0017]

[0018] wherein d is the embedding depth of the suction anchor foundation, x1 is the horizontal coordinate of the anchor ear of the side wall of the target suction anchor foundation, z1 is the vertical coordinate of the anchor ear of the side wall of the target suction anchor foundation, is the dynamic impedance function of the anchor ear point of the side wall of the target suction anchor, P HH is the horizontal impedance function at the center of the bottom of the target suction anchor foundation, P HM is the horizontal-rotational impedance function at the center of the bottom of the target suction anchor foundation, P VV is the vertical impedance function at the center of the bottom of the target suction anchor foundation, P MM is the rotational impedance function at the center of the bottom of the target suction anchor foundation.

[0019] In an optional implementation, the dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the anchor ear point of the side wall of the suction anchor and the geometric parameters of the target suction anchor foundation, comprising:

[0020] The moment of inertia at the anchor ear point of the side wall of the target suction anchor foundation is calculated based on the geometric parameters of the target suction anchor foundation;

[0021] obtaining a horizontal coordinate of a centroid of the target suction anchor foundation and a vertical coordinate of the centroid of the target suction anchor foundation, and constructing a mass matrix of the target suction anchor foundation at the side wall anchor ear based on a moment of inertia of the target suction anchor foundation at the side wall anchor ear, the geometric parameters of the target suction anchor foundation, the horizontal coordinate of the centroid of the target suction anchor foundation, and the vertical coordinate of the centroid of the target suction anchor foundation;

[0022] obtaining a mooring force borne by the target suction anchor, and calculating a dynamic response value of the target suction anchor under the mooring force based on a dynamic impedance function of the suction anchor side wall anchor ear point, the mass matrix of the target suction anchor foundation at the side wall anchor ear, and the mooring force borne by the target suction anchor, wherein the dynamic response value of the target suction anchor under the mooring force includes a horizontal displacement, a vertical displacement, and a rotational displacement of the target suction anchor under the mooring force.

[0023] The evaluation method for the dynamic bearing performance of the anchor foundation provided in the embodiment accurately quantifies the rotational resistance of the anchor ear, provides a data basis for the mass matrix of the target suction anchor foundation at the side wall anchor ear, accurately reflects the mass distribution and inertia characteristics of the force point of the anchor ear by constructing the mass matrix of the target suction anchor foundation at the side wall anchor ear based on the moment of inertia of the target suction anchor foundation at the side wall anchor ear, the geometric parameters of the target suction anchor foundation, the horizontal coordinate of the centroid of the target suction anchor foundation, and the vertical coordinate of the centroid of the target suction anchor foundation, provides key mechanical parameter support for the calculation of the dynamic response value of the target suction anchor under the mooring force, and calculates the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the suction anchor side wall anchor ear point, the mass matrix of the target suction anchor foundation at the side wall anchor ear, and the mooring force borne by the target suction anchor, fully considers the dynamic coupling effect of the suction anchor foundation and the soil, can more accurately calculate the dynamic response value of the target suction anchor under the mooring force, and thus ensures the accuracy of the evaluation result of the dynamic bearing performance of the anchor foundation.

[0024] In an alternative embodiment, the dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the suction anchor side wall anchor ear point, the mass matrix of the target suction anchor foundation at the side wall anchor ear, and the mooring force borne by the target suction anchor, and the expression of the dynamic response value of the target suction anchor under the mooring force is:

[0025]

[0026] wherein F1 and F2 are the horizontal component and the vertical component of the mooring force borne by the target suction anchor foundation, U1, U2, and U3 are the horizontal displacement, the vertical displacement, and the rotational displacement of the target suction anchor under the mooring force, and ω is the loading frequency of the load. The mass matrix of the target suction anchor foundation at the side wall anchor ear.

[0027] In an optional embodiment, the dynamic bearing performance evaluation of the anchor foundation is performed based on the dynamic response value of the suction anchor under the action of the mooring force, and the dynamic bearing performance evaluation result of the anchor foundation is obtained, including:

[0028] Obtain the failure displacement value, compare the horizontal and vertical displacements of the target suction anchor under the action of the mooring force with the failure displacement value, and determine the dynamic bearing performance evaluation result of the anchor foundation based on the comparison results.

[0029] The method for evaluating the dynamic bearing performance of an anchor foundation provided in this embodiment compares the horizontal and vertical displacements of a target suction anchor under the action of a mooring force with the failure displacement value, and intuitively judges the dynamic bearing performance of the target suction anchor foundation based on the comparison results. This method breaks through the technical bottleneck that related analytical methods can only be used for static bearing performance evaluation and that dynamic bearing performance evaluation requires the use of three-dimensional finite element discrete analysis. The dynamic bearing performance of a target suction anchor foundation can be calculated and evaluated using only analytical methods, and the calculation is efficient and simple, which has important engineering significance.

[0030] In a second aspect, the present invention provides a device for evaluating the dynamic bearing performance of an anchor foundation, the device comprising:

[0031] An acquisition module is used to obtain the geometric parameters of the target suction anchor foundation and the soil parameters around the target suction anchor;

[0032] A construction module is used to construct a dynamic impedance function of the anchor ear point on the side wall of the suction anchor based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil surrounding the target suction anchor;

[0033] A calculation module, for calculating a dynamic response value of a target suction anchor under the action of a mooring force based on a dynamic impedance function of an anchor ear point on a side wall of the suction anchor and basic geometric parameters of the target suction anchor;

[0034] The evaluation module is used to evaluate the dynamic bearing performance of the anchor foundation based on the dynamic response value of the suction anchor under the action of the mooring force, and obtain the dynamic bearing performance evaluation result of the anchor foundation.

[0035] In a third aspect, the present invention 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 computer instructions to execute the method for evaluating the dynamic bearing performance of the anchor foundation according to the first aspect or any corresponding embodiment thereof.

[0036] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method for evaluating the dynamic bearing performance of an anchor foundation according to the first aspect or any corresponding embodiment thereof.

[0037] In a fifth aspect, the present application provides a computer program product comprising computer instructions for causing a computer to perform the method for evaluating the dynamic bearing capacity of an anchoring foundation according to the first aspect or any of its possible implementation forms. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the present application, the specific embodiments or prior art technical solutions, the drawings needed in the description of the specific embodiments or prior art technical solutions will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 is a flowchart of a method for evaluating the dynamic bearing capacity of an anchoring foundation according to an embodiment of the present application;

[0040] Figure 2 is a flowchart of another method for evaluating the dynamic bearing capacity of an anchoring foundation according to an embodiment of the present application;

[0041] Figure 3 is a schematic diagram of the interaction between the soil and the target suction anchor foundation and the coordinate system according to an embodiment of the present application;

[0042] Figure 4 is a flowchart of yet another method for evaluating the dynamic bearing capacity of an anchoring foundation according to an embodiment of the present application;

[0043] Figure 5 is a schematic diagram of the horizontal displacement of the target suction anchor under the mooring force according to an embodiment of the present application;

[0044] Figure 6 is a schematic diagram of the vertical displacement of the target suction anchor under the mooring force according to an embodiment of the present application;

[0045] Figure 7 is a structural block diagram of an evaluation device for the dynamic bearing capacity of an anchoring foundation according to an embodiment of the present application;

[0046] Figure 8 is a hardware structure diagram of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0048] In recent years, with the continuous development of offshore wind power development to the deep sea, floating wind turbine foundation gradually becomes the main form of deep sea wind energy development and utilization, and the floating wind turbine usually adopts suction anchor foundation for anchoring positioning, and the safety and bearing capacity of the suction anchor foundation are crucial to the stable operation of the whole system.

[0049] However, the related evaluation method of the dynamic bearing capacity of the suction anchor foundation depends on three-dimensional finite element discrete modeling simulation, and the calculation efficiency is low, which is difficult to meet the efficient demand of engineering design, and in the design process of the suction anchor foundation, repeated bearing capacity analysis and calculation are needed to ensure that the bearing capacity meets the requirements, but it is time-consuming and labor-consuming, which affects the design efficiency, and therefore, an efficient evaluation method of the dynamic bearing capacity of the suction anchor foundation is needed to improve the efficiency of engineering design.

[0050] To solve the above technical problems, the embodiments of the present application provide an evaluation method of the dynamic bearing capacity of an anchoring foundation, which determines the geometric parameters of a target suction anchor foundation and the soil property parameters of the soil around the target suction anchor, calculates the dynamic impedance function at the center of the bottom of the target suction anchor foundation based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor, obtains the dynamic impedance function of the anchor ear point of the side wall of the target suction anchor through coordinate transformation of the dynamic impedance function at the center of the bottom of the target suction anchor foundation, calculates the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the anchor ear point of the side wall of the target suction anchor, and evaluates the dynamic bearing capacity of the anchoring foundation by judging whether the horizontal and vertical dynamic response amplitudes of the target suction anchor reach the failure displacement value. The dynamic response of the suction anchor foundation is calculated based on the dynamic impedance theory, and the dynamic bearing capacity thereof is quickly evaluated, which breaks through the technical bottleneck of needing to use finite element discrete simulation, can efficiently calculate the evaluation result of the dynamic bearing capacity of the anchoring foundation, and the result is accurate and reliable.

[0051] The embodiment of the present application provides an evaluation method of dynamic load bearing performance of an anchoring foundation. It should be noted that the execution subject of the evaluation method of dynamic load bearing performance of the anchoring foundation provided by the embodiment of the present application can be an evaluation device of dynamic load bearing performance of the anchoring foundation, and the evaluation device of dynamic load bearing performance of the anchoring foundation can be realized by software, hardware or a combination of software and hardware to become part or all of an electronic device, wherein the electronic device can be a server or a terminal, wherein the server in the embodiment of the present application can be a server or a server cluster composed of multiple servers, and the terminal in the embodiment of the present application can be a smart phone, a personal computer, a tablet computer, a wearable device, a smart robot and other smart hardware devices. In the following method embodiment, the execution subject is taken as an example of the electronic device.

[0052] According to the embodiment of the present application, an evaluation method of dynamic load bearing performance of an anchoring foundation is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0053] In the embodiment, an evaluation method of dynamic load bearing performance of an anchoring foundation is provided, which can be used in the electronic device described above, Figure 1 is a flowchart of the evaluation method of dynamic load bearing performance of an anchoring foundation according to the embodiment of the present application, as Figure 1 shown, the flowchart includes the following steps:

[0054] In step S101, the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor are obtained.

[0055] Specifically, the geometric parameters of the target suction anchor foundation include the diameter B of the target suction anchor foundation, the embedding depth d of the target suction anchor and the mass m of the target suction anchor; and the soil parameters of the soil around the target suction anchor include the shear modulus G s of the soil, the Poisson's ratio v and the soil density p s .

[0056] In step S102, a dynamic impedance function of the side wall anchor ear point of the suction anchor is constructed based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor.

[0057] In step S103, the dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the side wall anchor ear point of the suction anchor and the geometric parameters of the target suction anchor foundation.

[0058] In step S104, the dynamic response value of the suction anchor under the mooring force is used to evaluate the dynamic bearing performance of the anchoring foundation, and an evaluation result of the dynamic bearing performance of the anchoring foundation is obtained.

[0059] The evaluation method of the dynamic bearing performance of the anchoring foundation provided in this embodiment can obtain the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor, construct the dynamic impedance function of the anchor ear point of the side wall of the suction anchor based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor, calculate the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the anchor ear point of the side wall of the suction anchor and the geometric parameters of the target suction anchor foundation, and finally evaluate the dynamic bearing performance of the anchoring foundation based on the dynamic response value of the target suction anchor under the mooring force, so as to obtain the evaluation result of the dynamic bearing performance of the anchoring foundation. The calculation efficiency of the evaluation of the dynamic bearing performance of the anchoring foundation is improved, the efficient requirement of engineering design is met, and key technical support and necessary analysis means can be provided for the design of the dynamic ultimate bearing capacity of the suction anchor foundation of the offshore floating wind turbine.

[0060] In this embodiment, an evaluation method of the dynamic bearing performance of an anchoring foundation is provided, which can be used for the electronic device described above, Figure 2 is a flowchart of the evaluation method of the dynamic bearing performance of the anchoring foundation according to the embodiment of the present application, as Figure 2 shown, the flowchart includes the following steps:

[0061] In step S201, the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor are obtained. For details, refer to step S101 of the embodiment shown in Figure 1 , which will not be described here again.

[0062] In step S202, the dynamic impedance function of the anchor ear point of the side wall of the suction anchor is constructed based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor.

[0063] Specifically, the step S202 includes the following steps:

[0064] In step S2021, the horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, and the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation are calculated based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil around the target suction anchor.

[0065] Specifically, the calculation formula of the horizontal dynamic stiffness K HH (ω) at the center of the bottom of the target suction anchor foundation is as follows:

[0066] K HH (ω)=K H I H χ EH (ω) (1)

[0067] wherein K H is the horizontal static stiffness of the surface foundation, I H is the horizontal embedment coefficient, and χ EH (ω) is the horizontal dynamic coefficient.

[0068] wherein the calculation formulas of the horizontal static stiffness of the surface foundation, the horizontal embedment coefficient, and the horizontal dynamic coefficient are respectively:

[0069] K H = [G s B / (2-ν)]×4.036 (2)

[0070]

[0071] wherein a0is the dimensionless frequency, and the calculation formula of the dimensionless frequency a0is:

[0072]

[0073] wherein ω is the load frequency, V s is the shear wave velocity of the soil, and the calculation formula of the shear wave velocity V s of the soil is:

[0074]

[0075] Further, the calculation formula of the horizontal damping C HH (ω) at the center of the bottom of the target suction anchor foundation is:

[0076] C HH (ω) = C H (ω) + ρ s V s A WS + ρ s V a A WCE (7)

[0077] wherein C H (ω) is the horizontal damping of the surface foundation, V a is the Lysmer’s analog velocity of the soil, A WS is the contact area of the side wall parallel to the loading direction with the soil, and A WCE is the contact area of the side wall perpendicular to the loading direction with the soil.

[0078] wherein the calculation formulas of the horizontal damping of the surface foundation, the Lysmer’s analog velocity of the soil, the contact area of the side wall parallel to the loading direction with the soil, and the contact area of the side wall perpendicular to the loading direction with the soil are respectively:

[0079]

[0080] A WS = A WCE = 2Bd (10)

[0081] Further, the vertical dynamic stiffness K VV (ω) at the center of the bottom of the target suction anchor foundation is calculated by the following formula:

[0082] K VV (ω) = K V I V χ EV (ω) (11)

[0083] wherein K V is the vertical static stiffness of the open foundation, I V is the vertical embedment coefficient, and χ EV (ω) is the vertical dynamic coefficient.

[0084] wherein the calculation formulas of the vertical static stiffness of the open foundation, the vertical embedment coefficient, and the vertical dynamic coefficient are respectively:

[0085] K V = [G s B / (1-ν)]×2.015 (12)

[0086]

[0087] wherein k z is a first intermediate variable, and the calculation formula of the first intermediate variable k z is:

[0088]

[0089] Further, the vertical damping C VV at the center of the bottom of the target suction anchor foundation is calculated by the following formula:

[0090] C VV = C V + ρ s V s πBd (16)

[0091] wherein C V is the vertical damping of the open foundation, and the calculation formula of the vertical damping of the open foundation is:

[0092]

[0093] Further, the rotational dynamic stiffness K MM (ω) at the center of the bottom of the target suction anchor foundation is calculated by the following formula:

[0094] K MM (ω) = K M I M χ EM (ω)(18)

[0095] wherein K M is the static rotational stiffness of the surface foundation, I M is the rotational embedment factor, and χ EH (ω) is the rotational dynamic factor.

[0096] wherein the calculation formulas of the static rotational stiffness of the surface foundation, the rotational embedment factor, and the rotational dynamic factor are respectively:

[0097]

[0098] χ EM = 1 - 0.20a0(21)

[0099] wherein I b is the moment of inertia; and the calculation formula of the moment of inertia is:

[0100]

[0101] Further, the calculation formula of the rotational damping C MM at the center of the bottom of the target suction anchor foundation is:

[0102]

[0103] wherein C M is the rotational damping of the surface foundation, and c1(ω) is a second intermediate variable.

[0104] Further, the calculation formulas of the rotational damping C M of the surface foundation and the second intermediate variable c1(ω) are respectively:

[0105] C M = p s V a I b c r (24)

[0106]

[0107] wherein c r is a third intermediate variable; and the calculation formula of the third intermediate variable is:

[0108]

[0109] Step S2022, constructing a dynamic impedance matrix at the center of the bottom of the target suction anchor foundation based on the horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, and the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation.

[0110] Specifically, the expression of the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation is:

[0111]

[0112] wherein P is the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation, ω is the load loading frequency, K HH is the horizontal dynamic stiffness at the center of the bottom of the target suction anchor foundation, C HH is the horizontal damping at the center of the bottom of the target suction anchor foundation, K VV is the vertical dynamic stiffness at the center of the bottom of the target suction anchor foundation, C VV is the vertical damping at the center of the bottom of the target suction anchor foundation, K MM is the rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, C MM is the rotational damping at the center of the bottom of the target suction anchor foundation, K HM is the horizontal-rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, C HM is the horizontal-rotational damping at the center of the bottom of the target suction anchor foundation, K MH is the rotational-horizontal dynamic stiffness at the center of the bottom of the target suction anchor foundation, C MH is the rotational-horizontal damping at the center of the bottom of the target suction anchor foundation, P HH is the horizontal impedance function at the center of the bottom of the target suction anchor foundation, P HM is the horizontal-rotational impedance function at the center of the bottom of the target suction anchor foundation, P VV is the vertical impedance function at the center of the bottom of the target suction anchor foundation, P MH is the rotational-horizontal impedance function at the center of the bottom of the target suction anchor foundation, P MM is the rotational impedance function at the center of the bottom of the target suction anchor foundation.

[0113] wherein the calculation formulae of the horizontal-rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation, the horizontal-rotational damping at the center of the bottom of the target suction anchor foundation, the rotational-horizontal dynamic stiffness at the center of the bottom of the target suction anchor foundation and the rotational-horizontal damping at the center of the bottom of the target suction anchor foundation are respectively:

[0114]

[0115] Step S2023, coordinate transformation is performed on the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation to obtain a dynamic impedance function of the suction anchor side wall anchor lug point.

[0116] Specifically, as shown in Figure 3 , coordinate transformation is performed on the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation to obtain a dynamic impedance function of the suction anchor side wall anchor lug point; wherein the expression of the dynamic impedance function of the suction anchor side wall anchor lug point is:

[0117]

[0118] wherein d is the embedding depth of the suction anchor foundation, x1 is the horizontal coordinate of the target suction anchor foundation side wall anchor lug, z1 is the vertical coordinate of the target suction anchor foundation side wall anchor lug, is the dynamic impedance function of the target suction anchor side wall anchor lug point, P HH is the horizontal impedance function at the center of the bottom of the target suction anchor foundation, P HM is the horizontal-rotation impedance function at the center of the bottom of the target suction anchor foundation, P VV is the vertical impedance function at the center of the bottom of the target suction anchor foundation, P MM is the rotation impedance function at the center of the bottom of the target suction anchor foundation.

[0119] Step S203, based on the dynamic impedance function of the suction anchor side wall anchor lug point and the geometric parameters of the target suction anchor foundation, the dynamic response value of the target suction anchor under the mooring force is calculated. For details, please refer to step S103 of the embodiment shown in Figure 1 , which will not be repeated here.

[0120] Step S204, based on the dynamic response value of the suction anchor under the mooring force, the dynamic bearing performance evaluation of the anchoring foundation is performed to obtain the dynamic bearing performance evaluation result of the anchoring foundation. For details, please refer to step S104 of the embodiment shown in Figure 1 , which will not be repeated here.

[0121] The evaluation method for the dynamic bearing performance of the anchoring foundation provided in the embodiment improves the accuracy of structural dynamic analysis, guarantees the rationality of the dynamic impedance function of the anchor ear point of the suction anchor sidewall, accurately depicts the interaction between the target suction anchor and the soil dynamics, provides a quantitative basis for the evaluation of the dynamic bearing performance of the anchoring foundation, and accurately constructs the dynamic impedance function of the anchor ear point of the suction anchor sidewall by performing coordinate transformation on the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation, realizes accurate characterization of the dynamic performance of the anchor ear stress point, and further guarantees the accuracy of the evaluation of the dynamic bearing performance of the anchoring foundation.

[0122] In the embodiment, an evaluation method for the dynamic bearing performance of an anchoring foundation is provided, which can be used for the electronic device described above, Figure 4 is a flowchart of the evaluation method for the dynamic bearing performance of the anchoring foundation according to the embodiment of the present application, as shown in the figure, the flowchart comprises the following steps: Figure 4

[0123] In step S401, the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor are obtained. For details, refer to step S201 of the embodiment shown in Figure 2 , which will not be repeated here.

[0124] In step S402, the dynamic impedance function of the anchor ear point of the suction anchor sidewall is constructed based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor. For details, refer to step S202 of the embodiment shown in Figure 2 , which will not be repeated here.

[0125] In step S403, the dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the anchor ear point of the suction anchor sidewall and the geometric parameters of the target suction anchor foundation.

[0126] Specifically, the above step S403 comprises:

[0127] In step S4031, the moment of inertia at the anchor ear of the side wall of the target suction anchor foundation is calculated based on the geometric parameters of the target suction anchor foundation.

[0128] Specifically, the calculation formula of the moment of inertia J1 at the anchor ear of the side wall of the target suction anchor foundation is:

[0129] ​J1 = m(d 2 / 12 + B 2 / 16) + m(x C - x1) 2 + m(z C - z1) 2 (31)

[0130] wherein x C is the horizontal coordinate of the centroid of the suction anchor foundation, and z C is the vertical coordinate of the centroid of the suction anchor foundation.

[0131] In step S4032, the horizontal coordinate of the centroid of the target suction anchor foundation and the vertical coordinate of the centroid of the target suction anchor foundation are obtained, and a mass matrix at the side wall anchor lug of the target suction anchor foundation is constructed based on the moment of inertia at the side wall anchor lug of the target suction anchor foundation, the geometric parameters of the target suction anchor foundation, the horizontal coordinate of the centroid of the target suction anchor foundation, and the vertical coordinate of the centroid of the target suction anchor foundation.

[0132] Specifically, the expression of the mass matrix at the side wall anchor lug of the target suction anchor foundation is as follows:

[0133]

[0134] In step S4033, the mooring force borne by the target suction anchor is obtained, and the dynamic response value of the target suction anchor under the action of the mooring force is calculated based on the dynamic impedance function of the side wall anchor lug of the suction anchor, the mass matrix at the side wall anchor lug of the target suction anchor foundation, and the mooring force borne by the target suction anchor; wherein the dynamic response value of the target suction anchor under the action of the mooring force includes the horizontal displacement, the vertical displacement, and the rotational displacement of the target suction anchor under the action of the mooring force.

[0135] Specifically, the dynamic response value of the target suction anchor under the action of the mooring force is calculated based on the dynamic impedance function of the side wall anchor lug of the suction anchor, the mass matrix at the side wall anchor lug of the target suction anchor foundation, and the mooring force borne by the target suction anchor; wherein the expression of the dynamic response value of the target suction anchor under the action of the mooring force is as follows:

[0136]

[0137] wherein F1 and F2 are the horizontal component and the vertical component of the mooring force borne by the target suction anchor foundation, U1, U2, and U3 are the horizontal displacement, the vertical displacement, and the rotational displacement of the target suction anchor under the action of the mooring force, ω is the loading frequency, is the mass matrix at the side wall anchor lug of the target suction anchor foundation.

[0138] In step S404, the dynamic bearing performance evaluation of the anchoring foundation is performed based on the dynamic response value of the suction anchor under the action of the mooring force, and the dynamic bearing performance evaluation result of the anchoring foundation is obtained.

[0139] Specifically, the damage displacement value is obtained, the horizontal displacement and vertical displacement of the target suction anchor under the action of the mooring force are compared with the damage displacement value, and the dynamic bearing performance evaluation result of the anchor foundation is determined based on the comparison result.

[0140] Furthermore, the damage displacement value includes: the lateral damage displacement value U of the suction anchor foundation x and the vertical failure displacement value U of the suction anchor foundation z , the lateral failure displacement value U of the suction anchor foundation x and the vertical failure displacement value U of the suction anchor foundation z The calculation formulas are:

[0141] U x =0.1B (34)

[0142] U z =0.1B (35)

[0143] Furthermore, if the horizontal displacement of the target suction anchor under the action of the mooring force is less than the lateral damage displacement value U of the suction anchor foundation, x , and the vertical displacement of the target suction anchor under the action of the mooring force is less than the vertical failure displacement value U of the suction anchor foundation z , then the dynamic bearing performance of the target suction anchor foundation under the current mooring force meets the requirements, and the expression of the dynamic bearing performance evaluation result of the anchor foundation is:

[0144]

[0145] The method for evaluating the dynamic bearing performance of the anchor foundation provided in this embodiment calculates the moment of inertia of the anchor ears at the side walls of the target suction anchor foundation based on the geometric parameters of the target suction anchor foundation, accurately quantifies the anti-rotational capacity of the anchor ears, and provides a data basis for the mass matrix of the anchor ears at the side walls of the target suction anchor foundation. By constructing the mass matrix of the anchor ears at the side walls of the target suction anchor foundation based on the moment of inertia of the anchor ears at the side walls of the target suction anchor foundation, the geometric parameters of the target suction anchor foundation, the horizontal coordinates of the center of mass of the target suction anchor foundation, and the vertical coordinates of the center of mass of the target suction anchor foundation, the force points of the anchor ears are accurately reflected. The mass distribution and inertia characteristics of the target suction anchor provide key mechanical parameter support for the calculation of the dynamic response value of the target suction anchor under the mooring force. The dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the anchor ear point on the side wall of the suction anchor, the mass matrix at the anchor ear on the side wall of the target suction anchor foundation, and the mooring force applied to the target suction anchor. The dynamic coupling effect between the suction anchor foundation and the soil is fully considered, and the dynamic response value of the target suction anchor under the mooring force can be calculated more accurately, thereby ensuring the accuracy of the evaluation results of the dynamic bearing performance of the anchor foundation.

[0146] The following describes the specific steps of a method for evaluating the dynamic bearing performance of an anchor foundation through a specific embodiment.

[0147] Example 1:

[0148] The diameter of the suction anchor foundation of a floating offshore wind turbine is 2m, and the height and depth of the anchor are both 6m. Assuming that the suction anchor is a massless rigid foundation, a simple harmonic force F with a frequency of 2rad / s is applied to the anchor ear. The amplitude of the horizontal and vertical components of the simple harmonic force F are both 1000kN. The shear modulus of the seabed foundation soil G is s =3.85×10 5 N / m 2 , soil density ρ s =1600kg / m 3 , Poisson's ratio ν = 0.3, and the target suction anchor is a completely buried suction anchor.

[0149] The steps for evaluating the dynamic bearing performance of a suction anchor foundation under mooring forces include:

[0150] 1) Determine the geometric parameters of the fully buried suction anchor foundation, including: the fully buried suction anchor foundation diameter B = 2m, the fully buried suction anchor burial depth d = 6m, and the fully buried suction anchor mass is 0.

[0151] 2) Measure the soil parameters around the fully buried suction anchor, including: Poisson's ratio ν = 0.3, soil shear modulus G s =3.85×10 5 N / m 2 , soil density ρ s =1600kg / m 3 .

[0152] 3) The expression of the dynamic impedance matrix P at the bottom center of the fully buried suction anchor foundation is calculated as follows:

[0153]

[0154] 4) The horizontal coordinate of the anchor ear point of the fully buried suction anchor side wall is 1, and the vertical coordinate of the anchor ear point of the fully buried suction anchor side wall is 2.4. The dynamic impedance matrix of the anchor ear point of the fully buried suction anchor side wall is obtained by coordinate transformation. The expression is:

[0155]

[0156] 5) The dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the anchor ear point on the side wall of the fully embedded suction anchor and the geometric parameters of the fully embedded suction anchor foundation. The expression of the dynamic response value of the fully embedded suction anchor under the mooring force is:

[0157]

[0158] 6) Based on the dynamic response value of the target suction anchor under the mooring force, the dynamic bearing performance of the anchoring foundation is evaluated, and the dynamic bearing performance evaluation result of the anchoring foundation is obtained. The expression of the dynamic bearing performance evaluation result of the anchoring foundation is:

[0159]

[0160] At this time, the dynamic bearing performance of the suction anchor foundation meets the requirements.

[0161] As shown in Figures 5-6 , Figure 5 and Figure 6 respectively give the horizontal displacement and vertical displacement of the target suction anchor under the mooring force under different loading frequencies, and Figures 5-6 It can be seen that the calculation results of the evaluation method of the dynamic bearing performance of the anchoring foundation are in good agreement with the three-dimensional finite element simulation calculation results, which verifies the accuracy and reliability of the evaluation method of the dynamic bearing performance of the anchoring foundation.

[0162] In this embodiment, an evaluation device for the dynamic bearing performance of the anchoring foundation is also provided, which is used to realize the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and is conceived.

[0163] The embodiment provides an evaluation device for the dynamic bearing performance of the anchoring foundation, as shown in Figure 7 , comprising:

[0164] The acquisition module 701 is configured to acquire the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor.

[0165] The construction module 702 is configured to construct the dynamic impedance function of the suction anchor ear point of the side wall based on the geometric parameters of the target suction anchor foundation and the soil property parameters of the soil around the target suction anchor.

[0166] The calculation module 703 is configured to calculate the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the suction anchor ear point of the side wall and the geometric parameters of the target suction anchor foundation.

[0167] The evaluation module 704 is configured to evaluate the dynamic bearing performance of the anchoring foundation based on the dynamic response value of the suction anchor under the mooring force, and obtain the dynamic bearing performance evaluation result of the anchoring foundation.

[0168] In some optional embodiments, the construction module 702 comprises:

[0169] The first computing unit is configured to calculate horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation and horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation based on the target suction anchor foundation geometric parameters and soil property parameters of the soil around the target suction anchor.

[0170] The first construction unit is configured to construct a dynamic impedance matrix at the center of the bottom of the target suction anchor foundation based on the horizontal dynamic stiffness, vertical dynamic stiffness and rotational dynamic stiffness at the center of the bottom of the target suction anchor foundation and the horizontal damping, vertical damping and rotational damping at the center of the bottom of the target suction anchor foundation.

[0171] The transformation unit is configured to perform coordinate transformation on the dynamic impedance matrix at the center of the bottom of the target suction anchor foundation to obtain a dynamic impedance function of the suction anchor side wall anchor ear point.

[0172] In some optional embodiments, the expression of the dynamic impedance function of the suction anchor side wall anchor ear point in the construction module 702 is:

[0173]

[0174] wherein d is the embedding depth of the suction anchor foundation, x1 is the horizontal coordinate of the target suction anchor foundation side wall anchor ear, z1 is the vertical coordinate of the target suction anchor foundation side wall anchor ear, is the dynamic impedance function of the target suction anchor side wall anchor ear point, P HH is the horizontal impedance function at the center of the bottom of the target suction anchor foundation, P HM is the horizontal-rotational impedance function at the center of the bottom of the target suction anchor foundation, P VV is the vertical impedance function at the center of the bottom of the target suction anchor foundation, P MM is the rotational impedance function at the center of the bottom of the target suction anchor foundation.

[0175] In some optional embodiments, the computing module 703 comprises:

[0176] The second computing unit is configured to calculate the moment of inertia at the target suction anchor foundation side wall anchor ear based on the target suction anchor foundation geometric parameters.

[0177] The second construction unit is configured to obtain the horizontal coordinate of the center of mass of the target suction anchor foundation and the vertical coordinate of the center of mass of the target suction anchor foundation, and construct a mass matrix at the target suction anchor foundation side wall anchor ear based on the moment of inertia at the target suction anchor foundation side wall anchor ear, the target suction anchor foundation geometric parameters, the horizontal coordinate of the center of mass of the target suction anchor foundation and the vertical coordinate of the center of mass of the target suction anchor foundation.

[0178] The third calculation unit obtains the mooring force applied to the target suction anchor, and calculates the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the anchor ear point on the side wall of the suction anchor, the mass matrix at the anchor ear on the side wall of the target suction anchor foundation, and the mooring force applied to the target suction anchor; wherein the dynamic response value of the target suction anchor under the mooring force includes the horizontal displacement, vertical displacement, and rotational displacement of the target suction anchor under the mooring force.

[0179] In some optional implementations, the expression for the dynamic response value of the target suction anchor under the mooring force in the third calculation unit is:

[0180]

[0181] Among them, F1 and F2 are the horizontal and vertical components of the mooring force on the target suction anchor foundation, U1, U2 and U3 are the horizontal displacement, vertical displacement and rotational displacement of the target suction anchor under the action of the mooring force, ω is the load application frequency, is the mass matrix at the anchor ear on the side wall of the target suction anchor foundation.

[0182] In some optional embodiments, the evaluation module 704 is specifically used to obtain a failure displacement value, compare the horizontal displacement and vertical displacement of the target suction anchor under the mooring force with the failure displacement value, and determine an evaluation result of the dynamic bearing performance of the anchor foundation based on the comparison result.

[0183] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0184] The evaluation device for the dynamic bearing performance of the anchor foundation in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0185] The embodiment of the present invention also provides a computer device having the above Figure 7 The device for evaluating the dynamic bearing performance of the anchor foundation shown.

[0186] See also Figure 8 , Figure 8 is a structural diagram of a computer device provided by an optional embodiment of the present invention, such as Figure 8As shown, the computer device includes one or more processors 10, memory 20, and interfaces 50 for external devices such as modems and network interfaces. The one or more processors 10 can be implemented as one or more central processing units (CPUs), one or more microprocessors, microcontrollers, digital signal processors, specialized processors or controller, or one or more processors of any equivalent known in the art. In some embodiments, the one or more processors 10 can be implemented as a combination of one or more of the above physical processors and / or one or more software or firmware modules. The software or firmware can reside in the memory 20 or in any suitable memory and controlling unit, or in a suitable memory on one or more servers that are remotely located in relation to the hardware processor(s) 10. The memory 20 can include random access memory (RAM), read only memory (ROM), or a combination of both, along with an appropriate memory controller. The memory 20 can include one or more types of computer-readable storage media capable of storing data, including volatile memory, non-volatile memory, or other types of memory. Examples of non-volatile memory include, but are not limited to, hard drives, solid state memory, flash memory, or other suitable non-volatile storage components. The one or more processors 10 can access information from, or store data to, the memory 20, using the one or more buses 50. The one or more buses 50 can be implemented using various bus architectures including, but not limited to, Industry Standard Architecture (ISA), Extended ISA (EISA), Peripheral Component Interconnect (PCI), Peripheral Component Interconnect Express (PCIe), Video Electronics Standards Association (VESA), Advanced Graphics Port (AGP), Personal Computer Memory Card International Association (PCMCIA), Universal Serial Bus (USB), Advanced Technology Attachment (ATA), Serial ATA (SATA), Firewire (IEEE 1394), or any other bus architecture. Figure 8 The processor 10 is exemplified as one processor.

[0187] The processor 10 can be a central processing unit, a network processor, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a general array logic, or any combination thereof.

[0188] The memory 20 stores instructions that are executable by the at least one processor 10, to cause the at least one processor 10 to perform the methods illustrated in the above embodiments.

[0189] The memory 20 can include a program storage area and a data storage area. The program storage area can store an operating system, application programs, and the like for the computer device. The data storage area can store data that is created when the computer device is in operation. In addition, the memory 20 can include a high speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some alternative embodiments, the memory 20 can optionally include a memory that is remotely located from the processor 10, and can be connected to the computer device through a network. Examples of the network include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, or a combination thereof.

[0190] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device. The memory 20 can further include a combination of the above-mentioned types of memories.

[0191] The computer device further includes input devices 30 and output devices 40. The processor 10, the memory 20, the input devices 30, and the output devices 40 can be connected through a bus or other means,Figure 8 The bus connection is taken as an example.

[0192] The input device 30 can receive inputted digital or character information, and generate key signal input related to user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 can include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), etc. The display device includes, but is not limited to, a liquid crystal display, a light-emitting diode, a display, and a plasma display. In some alternative embodiments, the display device can be a touch screen.

[0193] The embodiments of the present application also provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or be implemented as computer code stored in a remote storage medium or a non-transitory machine readable storage medium and stored in a local storage medium to be downloaded through a network, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer code, which, when accessed and executed by the computer, the processor, or the hardware, implements the method shown in the above embodiments.

[0194] Part of the present application can be applied as a computer program product, for example, computer program instructions, when executed by a computer, through the operation of the computer, the method and / or technical solutions according to the present application can be invoked or provided. Those skilled in the art should understand that the form of computer program instructions in a computer readable medium includes but is not limited to source files, executable files, installation package files, etc. Correspondingly, the way of computer program instructions executed by a computer includes but is not limited to: the computer directly executes the instructions, or the computer executes the corresponding compiled program after compiling the instructions, or the computer reads and executes the instructions, or the computer executes the corresponding installed program after reading and installing the instructions. Here, the computer readable medium can be any available computer readable storage medium or communication medium accessible to the computer.

[0195] While embodiments of the application have been described in connection with the preferred embodiments of the various figures, those of ordinary skill in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the application, and that such modifications and changes fall within the scope of the appended claims.

Claims

1. A method for evaluating the dynamic bearing performance of an anchor foundation, characterized in that: The method comprises: Obtain the geometric parameters of the target suction anchor foundation and the soil parameters around the target suction anchor; Constructing a dynamic impedance function of the suction anchor sidewall anchor ear point based on the target suction anchor foundation geometric parameters and soil parameters surrounding the target suction anchor; Calculating a dynamic response value of a target suction anchor under the action of a mooring force based on a dynamic impedance function of an anchor ear point on a side wall of the suction anchor and basic geometric parameters of the target suction anchor; The dynamic bearing performance evaluation of the anchor foundation is performed based on the dynamic response value of the suction anchor under the action of the mooring force, and an evaluation result of the dynamic bearing performance of the anchor foundation is obtained.

2. The method according to claim 1, characterized in that The constructing of the dynamic impedance function of the suction anchor side wall anchor ear point based on the target suction anchor foundation geometric parameters and soil property parameters of the soil surrounding the target suction anchor includes: Calculating the horizontal dynamic stiffness, vertical dynamic stiffness, and rotational dynamic stiffness at the bottom center of the target suction anchor foundation, as well as the horizontal damping, vertical damping, and rotational damping at the bottom center of the target suction anchor foundation based on the geometric parameters of the target suction anchor foundation and the soil parameters of the soil surrounding the target suction anchor; Constructing a dynamic impedance matrix at the bottom center of the target suction anchor foundation based on the horizontal dynamic stiffness, vertical dynamic stiffness, and rotational dynamic stiffness at the bottom center of the target suction anchor foundation, as well as the horizontal damping, vertical damping, and rotational damping at the bottom center of the target suction anchor foundation; The dynamic impedance matrix at the bottom center of the target suction anchor foundation is subjected to coordinate transformation to obtain the dynamic impedance function of the anchor ear point on the side wall of the suction anchor.

3. The method according to claim 2, characterized in that The dynamic impedance matrix at the bottom center of the target suction anchor foundation is subjected to coordinate transformation to obtain the dynamic impedance function of the suction anchor side wall anchor ear point; wherein, the expression of the dynamic impedance function of the suction anchor side wall anchor ear point is: Where, d is the buried depth of the suction anchor foundation, x1 is the horizontal coordinate of the anchor ear on the side wall of the target suction anchor foundation, and z1 is the vertical coordinate of the anchor ear on the side wall of the target suction anchor foundation. is the dynamic impedance function of the anchor ear point on the side wall of the target suction anchor, P HH is the horizontal impedance function at the bottom center of the target suction anchor foundation, P HM is the horizontal-rotation impedance function at the bottom center of the target suction anchor foundation, P VV is the vertical impedance function at the bottom center of the target suction anchor foundation, P MM is the rotational impedance function at the bottom center of the target suction anchor foundation.

4. The method according to claim 2, characterized in that The calculating the dynamic response value of the target suction anchor under the mooring force based on the dynamic impedance function of the anchor ear point on the side wall of the suction anchor and the basic geometric parameters of the target suction anchor includes: Calculating the moment of inertia of the anchor ears on the side walls of the target suction anchor foundation based on the geometric parameters of the target suction anchor foundation; Obtaining the horizontal coordinates of the target suction anchor foundation mass center and the vertical coordinates of the target suction anchor foundation mass center, and constructing the mass matrix of the target suction anchor foundation side wall anchor ear based on the moment of inertia at the target suction anchor foundation side wall anchor ear, the target suction anchor foundation geometric parameters, the target suction anchor foundation mass center horizontal coordinates and the target suction anchor foundation mass center vertical coordinates; The mooring force applied to the target suction anchor is obtained, and a dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the anchor ear point on the side wall of the suction anchor, the mass matrix at the anchor ear on the side wall of the base of the target suction anchor, and the mooring force applied to the target suction anchor; wherein the dynamic response value of the target suction anchor under the mooring force includes the horizontal displacement, vertical displacement, and rotational displacement of the target suction anchor under the mooring force.

5. The method according to claim 4, characterized in that The dynamic response value of the target suction anchor under the mooring force is calculated based on the dynamic impedance function of the suction anchor sidewall anchor ear point, the mass matrix at the target suction anchor base sidewall anchor ear, and the mooring force applied to the target suction anchor; wherein the expression of the dynamic response value of the target suction anchor under the mooring force is: Among them, F1 and F2 are the horizontal and vertical components of the mooring force on the target suction anchor foundation, U1, U2 and U3 are the horizontal displacement, vertical displacement and rotational displacement of the target suction anchor under the action of the mooring force, ω is the load application frequency, is the mass matrix at the anchor ear on the side wall of the target suction anchor foundation.

6. The method according to claim 5, characterized in that The dynamic bearing performance evaluation of the anchor foundation is performed based on the dynamic response value of the suction anchor under the action of the mooring force, and the dynamic bearing performance evaluation result of the anchor foundation is obtained, including: A failure displacement value is obtained, and the horizontal displacement and vertical displacement of the target suction anchor under the mooring force are compared with the failure displacement value. Based on the comparison result, an evaluation result of the dynamic bearing performance of the anchor foundation is determined.

7. An evaluation device for the dynamic bearing performance of an anchor foundation, characterized in that: The device comprises: An acquisition module is used to obtain the geometric parameters of the target suction anchor foundation and the soil parameters around the target suction anchor; A construction module, configured to construct a dynamic impedance function of a suction anchor sidewall anchor point based on the target suction anchor foundation geometric parameters and soil property parameters surrounding the target suction anchor; a calculation module, configured to calculate a dynamic response value of a target suction anchor under the action of a mooring force based on a dynamic impedance function of an anchor ear point on a side wall of the suction anchor and basic geometric parameters of the target suction anchor; The evaluation module is used to evaluate the dynamic bearing performance of the anchor foundation based on the dynamic response value of the suction anchor under the action of the mooring force, and obtain an evaluation result of the dynamic bearing performance of the anchor foundation.

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 evaluating the dynamic bearing performance of an anchor foundation 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 method for evaluating the dynamic bearing performance of an anchor foundation 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 evaluating the dynamic bearing performance of an anchor foundation according to any one of claims 1 to 6.

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