Offshore platform probe restraint method, apparatus, device and readable storage medium

Abstract

The application provides a method, device and equipment for restricting a probe rod of an offshore platform and a readable storage medium. The method comprises the following steps: obtaining an acting force of a sea wave on the probe rod, determining a sea wave load on the probe rod based on the acting force, calculating a bending moment of the probe rod according to the sea wave load and a probe rod length of the probe rod, determining a first stiffness of the probe rod based on a probe rod modulus and a moment of inertia of the probe rod, calculating a first deflection based on the probe rod length and a preset probe rod inclination angle, calculating a second stiffness based on the probe rod length, the bending moment and the first deflection, calculating a restriction compensation stiffness based on the first stiffness and the second stiffness, and restricting the probe rod based on the restriction compensation stiffness. The application can improve the stability of the probe rod during operation.

Description

Technical Field

[0001] This application relates to the field of marine engineering technology, and in particular to a probe restraint method, device, electronic device, and computer-readable storage medium for a marine platform. Background Technology

[0002] With the booming development of offshore wind power, static cone penetration testing (SPPT) is an essential test in offshore wind power geological exploration. During SPPT, a probe is inserted deep into the seabed from an offshore platform.

[0003] However, due to the large water depth during operation, the static cone penetration test probe tends to bend when it is located in the middle section between the offshore platform and the seabed. Currently, there is no solution to the problem of excessive bending of the probe when conducting static cone penetration tests on an offshore platform. Summary of the Invention

[0004] In view of the above problems, embodiments of this application are proposed to provide a probe restraint method, apparatus, electronic device, and computer-readable storage medium for an offshore platform that overcomes or at least partially solves the above problems.

[0005] In a first aspect, embodiments of this application disclose a probe constraint method for an offshore platform, comprising:

[0006] The force exerted by ocean waves on the probe is obtained, and the wave load on the probe is determined based on the force.

[0007] The bending moment of the probe is calculated based on the wave load and the probe length.

[0008] The first stiffness of the probe is determined based on the probe modulus and the probe moment of inertia.

[0009] Based on the probe length and the preset probe inclination angle, a first deflection is calculated; the first deflection represents the maximum deformation of the probe; the preset probe inclination angle represents the maximum inclination angle of the probe.

[0010] The second stiffness is calculated based on the probe length, the bending moment, and the first deflection.

[0011] Based on the first stiffness and the second stiffness, the constraint compensation stiffness is calculated, and the probe is constrained based on the constraint compensation stiffness.

[0012] Secondly, embodiments of this application disclose a probe restraint device for an offshore platform, the device comprising:

[0013] The applied load module is used to acquire the force exerted by the waves on the probe and to determine the wave load on the probe based on the applied force.

[0014] a bending moment module, configured to calculate a bending moment of the probe rod according to the wave load and a probe rod length of the probe rod;

[0015] a first stiffness module, configured to determine a first stiffness of the probe rod based on a probe rod modulus and a probe rod moment of inertia of the probe rod;

[0016] a first deflection module, configured to calculate a first deflection based on the probe rod length and a preset probe rod inclination angle; the first deflection represents a maximum deformation degree of the probe rod; the preset probe rod inclination angle represents a maximum inclination angle of the probe rod;

[0017] a second stiffness module, configured to calculate a second stiffness based on the probe rod length, the bending moment and the first deflection;

[0018] a constraint compensation module, configured to calculate a constraint compensation stiffness based on the first stiffness and the second stiffness, and to constrain the probe rod based on the constraint compensation stiffness.

[0019] In a third aspect, an electronic device is disclosed, which includes a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the method for constraining a probe rod of an offshore platform according to the first aspect.

[0020] In a fourth aspect, a computer readable storage medium is disclosed, which stores programs or instructions, and the programs or instructions, when executed by a processor, implement the steps of the method for constraining a probe rod of an offshore platform according to the first aspect.

[0021] In the embodiments of the present application, the wave force on the probe rod can be obtained, and the wave load on the probe rod can be determined based on the wave force. The bending moment of the probe rod can be calculated according to the wave load and the probe rod length. The first stiffness of the probe rod can be calculated based on the probe rod modulus and the probe rod moment of inertia, and the first deflection can be calculated based on the probe rod length and the preset probe rod inclination angle. The second stiffness can be calculated based on the probe rod length, the bending moment and the first deflection. The constraint compensation stiffness can be accurately calculated based on the first stiffness and the second stiffness, and the probe rod can be constrained based on the constraint compensation stiffness. The constraint compensation stiffness required under a specific wave load can be accurately calculated based on various parameters of the probe rod itself, including the length, the stiffness and the bending moment, so that the probe rod can be prevented from being bent under the action of the wave, and the stability of the probe rod during operation can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a step flowchart of a method for constraining a probe rod of an offshore platform provided by the embodiments of the present application.

[0023] Figure 2 is a working schematic diagram of a non-constrained probe rod provided by an embodiment of the present application;

[0024] Figure 3 is a working schematic diagram of a constrained probe rod provided by an embodiment of the present application;

[0025] Figure 4 is a step flow chart of a probe rod constraining method of another offshore platform provided by an embodiment of the present application;

[0026] Figure 5 is a block diagram of a probe rod constraining device of an offshore platform provided by an embodiment of the present application;

[0027] Figure 6 is a block diagram of an electronic device provided by an embodiment of the present application;

[0028] Figure 7 is a block diagram of yet another electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thoroughly and completely understood, and so that the scope of the present application will be fully conveyed to those skilled in the art.

[0030] Reference Figure 1 which shows a step flow chart of a probe rod constraining method of an offshore platform provided by an embodiment of the present application, the method comprising:

[0031] Step 101, obtaining an action force of sea waves on a probe rod, and determining a sea wave load on the probe rod based on the action force;

[0032] In an embodiment of the present application, the probe rod enters the sea, and the sea waves in the sea are in fluctuation and flow, thus the sea waves generate certain action force on the probe rod, and the action force can be one or more, and the sea wave load on the probe rod can be determined based on the action force.

[0033] Step 102, calculating a bending moment of the probe rod according to the sea wave load and a probe rod length of the probe rod;

[0034] In an embodiment of the present application, the bending moment of the free section of the probe rod along the probe rod length L is calculated according to the distribution of the sea wave load F, and can be calculated by the following formula:

[0035]

[0036] Wherein, M0(L) represents the bending moment when the probe rod length is L, F represents the sea wave load, L represents the probe rod length, and d represents derivation.

[0037] In step 103, the first stiffness of the probe rod is determined based on the probe rod modulus and the probe rod moment of inertia of the probe rod.

[0038] In the embodiments of the present disclosure, the probe rod modulus and the probe rod moment of inertia of the probe rod are obtained, and the first stiffness is determined. The stiffness refers to the ability of a structure to resist elastic deformation under stress, and is a representation of the difficulty of elastic deformation of a material or structure. The elastic modulus refers to the proportional coefficient of stress and strain in the elastic deformation stage of a material. The moment of inertia is a geometric quantity used to describe the bending resistance of a cross section. The first stiffness of the probe rod is determined by the probe rod modulus, i.e. the elastic modulus (E0) and the probe rod moment of inertia (I0) of the probe rod. The elastic modulus and the moment of inertia of the probe rod can be known parameters obtained during design and manufacturing.

[0039] In step 104, the first deflection is calculated based on the probe rod length and the preset probe rod inclination angle. The first deflection represents the maximum deformation degree of the probe rod. The preset probe rod inclination angle represents the maximum inclination angle of the probe rod.

[0040] In the embodiments of the present disclosure, the deflection refers to the linear displacement of the axis of an object in the direction perpendicular to the axis, which can represent the deformation degree of the object, e.g. the probe rod, under the bending moment. The preset probe rod inclination angle refers to the maximum probe rod inclination angle corresponding to the maximum bending degree of the probe rod. The maximum bending degree can be determined according to the requirements of the static sounding test specification, and the corresponding maximum probe rod inclination angle can be 2 degrees. The probe rod inclination angle can be the angle between the connecting line of the head and tail of the probe rod and the offshore platform.

[0041] The first deflection can be calculated based on the probe rod length and the preset probe rod inclination angle according to the following formula:

[0042] y max = 2Lsin2°

[0043] Wherein, y max represents the first deflection, i.e. the deflection when the maximum probe rod inclination angle required by the static sounding test specification is 2 degrees, and L represents the probe rod length.

[0044] Since the maximum probe rod inclination angle is 2 degrees, the first deflection calculated accordingly represents the maximum deformation degree of the probe rod.

[0045] In step 105, the second stiffness is calculated based on the probe rod length, the bending moment and the first deflection.

[0046] In the embodiments of the present application, the required rigidity of the probe rod, i.e., the second rigidity, can be calculated according to the probe rod length, the bending moment and the maximum first deflection. It can be understood that the actual rigidity of the probe rod can also be greater than the second rigidity, and the second rigidity is just the minimum rigidity required to meet the preset probe rod inclination angle requirement. The second rigidity can be expressed in the following formula:

[0047]

[0048] wherein y max represents the first deflection of the probe rod, M0 represents the bending moment, L represents the probe rod length, (EI) min represents the second rigidity, and d represents derivation.

[0049] In step 106, a constraint compensation rigidity is calculated based on the first rigidity and the second rigidity, and the probe rod is constrained based on the constraint compensation rigidity.

[0050] In the embodiments of the present application, the first rigidity is the rigidity of the probe rod itself, and the second rigidity is the minimum rigidity required to meet the preset probe rod inclination angle requirement. Therefore, the difference between the two is the constraint compensation rigidity. The constraint compensation rigidity needs to be provided by an additional constraint component, and a corresponding constraint component can be manufactured using a specific material and structure to make the constraint component have the constraint compensation rigidity. The constraint component and the probe rod can be bound or fixed, so that the constraint component can provide the constraint compensation rigidity.

[0051] Figure 2 is a working schematic diagram of a constraint-free probe rod provided by the embodiments of the present application; Figure 2 includes an offshore platform 201, and the probe rod 202 is deep into the seabed from the offshore platform 201, and the probe rod 202 is deformed due to the action of sea waves.

[0052] Figure 3 is a working schematic diagram of a constrained probe rod provided by the embodiments of the present application; Figure 3 includes an offshore platform 301, and the probe rod 302 with a constraint component 303 is deep into the seabed from the offshore platform 301, and the probe rod 302 does not deform.

[0053] In summary, in the embodiments of the present application, the force of the sea wave on the probe rod can be obtained, the sea wave load on the probe rod is determined based on the force, the bending moment of the probe rod is calculated according to the sea wave load and the probe rod length, the first stiffness of the probe rod is calculated based on the probe rod modulus and the probe rod moment of inertia, the first deflection is calculated based on the probe rod length and the preset probe rod inclination angle, the second stiffness is calculated based on the probe rod length, the bending moment and the first deflection, the constraint compensation stiffness is accurately calculated based on the first stiffness and the second stiffness, and the probe rod is constrained based on the constraint compensation stiffness. The constraint compensation stiffness required under a specific sea wave load can be accurately calculated according to various parameters of the probe rod itself including the length, the stiffness and the bending moment, the bending of the probe rod under the action of the sea wave is avoided, and the stability of the probe rod during operation can be improved.

[0054] Reference Figure 4 It shows a step flow chart of a probe rod constraint method of an offshore platform provided by the embodiments of the present application, and the method comprises:

[0055] In step 401, the force of the sea wave on the probe rod is obtained, and the sea wave load on the probe rod is determined based on the force.

[0056] In step 402, the bending moment of the probe rod is calculated according to the sea wave load and the probe rod length.

[0057] In step 403, the first stiffness of the probe rod is determined based on the probe rod modulus and the probe rod moment of inertia.

[0058] In step 404, the first deflection is calculated based on the probe rod length and the preset probe rod inclination angle. The first deflection represents the maximum deformation degree of the probe rod. The preset probe rod inclination angle represents the maximum inclination angle of the probe rod.

[0059] In step 405, the second stiffness is calculated based on the probe rod length, the bending moment and the first deflection.

[0060] In step 406, the constraint compensation stiffness is calculated based on the first stiffness and the second stiffness, and the probe rod is constrained based on the constraint compensation stiffness.

[0061] The above steps 401-406 can refer to the above Figure 1 The content of the embodiments will not be repeated here.

[0062] Optionally, the step of obtaining the force of the sea wave on the probe rod comprises:

[0063] The flow rate and the density of the sea wave are obtained, and the drag force of the sea wave is calculated based on the flow rate and the density.

[0064] In the embodiments of the present disclosure, the force of the sea wave on the probe rod can be a drag force caused by the flow rate of the sea wave, wherein the drag force refers to a force generated when an object moves in a fluid and is affected by fluid resistance. It is related to the movement speed, shape, surface roughness of the object, and the density, viscosity, and other factors of the fluid.

[0065] The drag force of the sea wave can be calculated by the flow rate and density of the sea wave, and can be calculated by the following formula:

[0066]

[0067] wherein F d represents the drag force, C d is a drag force coefficient, p is the density of seawater, A is the surface area of the probe rod, and U max is the seawater speed under the limit condition. It can be understood that the seawater speed is variable, and the highest seawater speed (i.e., the seawater speed under the limit condition) is used for calculation, so that the calculation result can meet the requirements of various seawater speeds, i.e., the probe rod can work stably and has no obvious bending under various seawater speeds.

[0068] Optionally, the step of obtaining the force of the sea wave on the probe rod comprises:

[0069] The acceleration and density of the sea wave are obtained, and the inertial force of the sea wave is calculated based on the acceleration and the density. The inertial force refers to a virtual force generated due to the inertia of an object when the movement state of the object changes. For example, when an object is accelerating or decelerating, it will feel the effect of the inertial force.

[0070] Therefore, the acceleration and density of the seawater can be obtained, and the inertial force of the sea wave is calculated. The inertial force can be calculated by the following formula:

[0071]

[0072] wherein F i represents the inertial force, C M represents an inertial force coefficient, V represents the unit length column volume of the probe rod, and U max is the seawater speed under the limit condition, represents the seawater acceleration under the limit condition.

[0073] It can be understood that the drag force is the actual force that an object receives when it moves in a fluid, and the inertial force is a virtual force used to describe the movement state of the object under the action of inertia. When determining the force of the sea wave, both the two forces can be used as the force of the sea wave, and then the sea wave load is determined.

[0074] In addition, the flow rate and acceleration of the sea wave can be determined based on the distribution rules of wave speed, wave height and wave length by investigating the wave measuring device data of the recent static sounding sea area or the wave monitoring data on the website of the local marine natural resources bureau. The flow rate and acceleration of the sea wave can also be obtained by the sensor placed in the sea wave.

[0075] Optionally, the step 406 of calculating the constraint compensation stiffness based on the first stiffness and the second stiffness, and constraining the probe rod based on the constraint compensation stiffness, comprises:

[0076] Sub-step 4061, determining the constraint compensation stiffness based on the difference between the first stiffness and the second stiffness;

[0077] Sub-step 4062, obtaining a target material type of the constraint component, and determining a target material modulus corresponding to the target material type according to a mapping relationship between the material type and the material modulus; the target material modulus represents the deformation resistance of the target material type;

[0078] Sub-step 4063, determining the cross-sectional area of the constraint component based on the constraint compensation stiffness and the target material modulus, and constraining the probe rod based on the constraint component with the cross-sectional area.

[0079] In the embodiments of the present disclosure, the first stiffness is the stiffness of the probe rod itself, and the second stiffness is the overall required stiffness, and the difference between the first stiffness and the second stiffness is the constraint compensation stiffness.

[0080] When the probe rod is constrained based on the constraint compensation stiffness, the constraint compensation stiffness can be provided by the constraint component. The constraint component can be made of different materials, and different materials have different material moduli, i.e., elastic moduli of the materials. Most materials and corresponding elastic moduli are known at present, and a mapping relationship between the material type and the material modulus can be constructed in advance, and then the corresponding target material modulus is determined according to the obtained target material type of the constraint component.

[0081] Further, the cross-sectional area of the constraint component is determined according to the constraint compensation stiffness and the target material modulus, wherein the greater the constraint compensation stiffness, the greater the cross-sectional area of the constraint component required. In addition, since the target material modulus represents the deformation resistance of the target material type, the greater the target material modulus, the smaller the cross-sectional area of the constraint component required.

[0082] Optionally, the step 4063 of determining the cross-sectional area of the constraint component based on the constraint compensation stiffness and the target material modulus, comprises:

[0083] Step A1: Obtain the design structure type of the constraint component, and determine the target cross-section formula corresponding to the design structure type based on the mapping relationship between the structure type and the cross-section formula.

[0084] Step A2: Based on the constraint compensation stiffness, the target material modulus, and the target cross-sectional formula, calculate the cross-sectional area of ​​the constraint component.

[0085] In this embodiment, the stiffness of the constraint components varies depending on their design structure; therefore, it is necessary to obtain the design structure type of the constraint components. Based on different structure types, such as cylindrical, annular, and cuboid, the corresponding cross-sectional area calculation formulas are also different. A mapping relationship between structure types and cross-sectional formulas can be established in advance, and then the corresponding target cross-sectional formula can be determined based on the obtained design structure cross-section.

[0086] Furthermore, based on the constraint compensation stiffness, target material modulus, and target cross-sectional formula, the cross-sectional area of ​​the constraint component is calculated.

[0087] Optionally, step A2, which calculates the cross-sectional area of ​​the constraint component based on the constraint compensation stiffness, the target material modulus, and the target cross-sectional formula, includes:

[0088] Step A21: When the design structure type is ring, the component moment of inertia of the constraint component is calculated based on the constraint compensation stiffness and the target material modulus.

[0089] Step A22: Based on the component's moment of inertia and the target cross-section formula, calculate the inner and outer diameters when the constraint component is annular, and determine the cross-sectional area based on the inner and outer diameters.

[0090] In this embodiment, the designed structure type can be annular, i.e., the central part of the cylinder is empty, and the cross-section is annular. Since stiffness is determined by the target material modulus and moment of inertia, and moment of inertia is related to cross-sectional area, the component moment of inertia of the constraint assembly can be calculated based on the constraint compensation stiffness and the target material modulus. The formula for calculating the component moment of inertia of the constraint assembly is as follows:

[0091]

[0092] Among them, I C The component moment of inertia (EI) represents the constraint component. min E represents the second stiffness, and E0I0 represents the first stiffness of the probe. C Indicates the modulus of the target material.

[0093] Then, based on the component inertia moment of the constraint component and the target section formula when the design structure type is a ring shape, the inner diameter and the outer diameter of the ring shape are calculated, and then the cross-sectional area of the ring design structure can be determined based on the inner diameter and the outer diameter. The target section formula when the design structure type is a ring shape can be the following formula:

[0094]

[0095] wherein I C represents the component inertia moment of the constraint component, d is the inner diameter of the ring shape, and D is the outer diameter of the ring shape. When the inner diameter and the outer diameter of the ring shape are known, the cross-sectional area of the ring design structure can be calculated. The inner diameter d can be 1.5 times, 1.7 times or 2 times the diameter of the probe rod.

[0096] Optionally, the method further comprises:

[0097] According to the probe rod length, the bending moment and the first stiffness, a second deflection of the probe rod is calculated; the second deflection represents the deformation degree of the probe rod under the bending moment;

[0098] According to the component length of the constraint component, the bending moment and the constraint compensation stiffness, a third deflection of the constraint component is calculated; the third deflection represents the deformation degree of the constraint component under the bending moment;

[0099] The sum of the second deflection and the third deflection is determined to be less than or equal to the first deflection.

[0100] In the embodiments of the present application, according to the probe rod length, the bending moment and the first stiffness of the probe rod, a first deflection of the probe rod is calculated; the first deflection represents the deformation degree of the probe rod under the bending moment. Similarly, according to the component length of the constraint component, the bending moment and the constraint compensation stiffness, a third deflection of the constraint component is calculated; the third deflection represents the deformation degree of the constraint component under the bending moment. It can be understood that the probe rod length and the component length can be the same.

[0101] The first deflection calculated based on the maximum inclination angle, i.e., the preset probe rod inclination angle, is the maximum deflection required for the stable operation of the probe rod, and the sum of the deflections of the probe rod and the constraint component needs to be less than or equal to this second deflection to ensure the stable operation of the probe rod. The second deflection can be calculated by the following formula:

[0102]

[0103] wherein y1 represents the second deflection of the probe rod, M0 represents the bending moment, L represents the probe rod length, E0 represents the probe rod modulus of the probe rod, I0 represents the probe rod inertia moment, and d represents derivation.

[0104] Similarly, the component length, bending moment and constraint compensation stiffness of the constraint component are substituted into the above formula to obtain the third deflection of the constraint component, and then it can be determined whether the sum of the second deflection and the third deflection is less than or equal to the first deflection. If it is greater than the first deflection, the constraint component needs to be adjusted.

[0105] After the constraint component with the constraint compensation stiffness and the above-mentioned annular cross-sectional area is determined, the constraint structure can be installed on the probe rod through the following steps S1-S3:

[0106] Step S1, installation design; according to the constraint structure design as a pipe or truss, select the installation equipment, and according to the static sounding operation water depth, design the installation parameters such as installation depth, installation speed, connection mode and fixing mode, etc.

[0107] Step S2, installation process; according to the installation design parameters, the constraint structure is installed to the designed depth by using the installation equipment, and the top is fixed to the platform;

[0108] Step S3, installation effect detection review. The probe rod inclination angle is required to be less than 2°, and the corresponding maximum deflection is y max , the vertical detection device is used to detect whether the installation precision of the constraint structure meets the requirements, such as the deflection of the constraint structure y2, which ensures that the deflection of the probe rod after being constrained and strengthened is y2, and the deflection of the probe rod itself is y1, and it is required to ensure that (y1+y2) is still less than or equal to y max .

[0109] After the installation is completed, the static sounding operation can be carried out through the following steps H1-H3:

[0110] Step H1, static sounding probe rod installation design; the static sounding probe rod penetration rate is designed, which can be selected as intermittent penetration, and adjusted with penetration, after the static sounding probe passes through the constraint structure, it can be continuously penetrated until the probe approaches the seabed surface, to reduce the friction damage and probe collision damage inside the constraint structure.

[0111] Step H2, carry out static sounding test; the probe rod drills into the seabed soil to carry out penetration operation and static sounding test.

[0112] Step H3, test end equipment removal. First, the drilling rod is pulled out, and after the probe enters the constraint structure, the lifting speed is reduced to prevent damage to the constraint structure.

[0113] Through the above steps H1-H3, vertical penetration drilling can be realized, penetration error can be reduced, and static sounding test precision can be improved.

[0114] In summary, in the embodiments of the present application, the force of the sea wave on the probe rod can be obtained, the sea wave load on the probe rod is determined based on the force, the bending moment of the probe rod is calculated according to the sea wave load and the probe rod length, the first stiffness of the probe rod is calculated based on the probe rod modulus and the probe rod moment of inertia, the first deflection is calculated based on the probe rod length and the preset probe rod inclination angle, the second stiffness is calculated based on the probe rod length, the bending moment and the first deflection, the constraint compensation stiffness is accurately calculated based on the first stiffness and the second stiffness, and the probe rod is constrained based on the constraint compensation stiffness. The constraint compensation stiffness required under a specific sea wave load can be accurately calculated according to various parameters of the probe rod including the length, the stiffness and the bending moment, the bending of the probe rod under the action of the sea wave is avoided, and the stability of the probe rod during operation can be improved.

[0115] Reference Figure 5 It shows a probe rod constraint device 50 of an offshore platform provided by the embodiments of the present application, which comprises:

[0116] The action load module 501 is configured to obtain the force of the sea wave on the probe rod, and determine the sea wave load on the probe rod based on the force.

[0117] The bending moment module 502 is configured to calculate the bending moment of the probe rod according to the sea wave load and the probe rod length.

[0118] The first stiffness module 503 is configured to determine the first stiffness of the probe rod based on the probe rod modulus and the probe rod moment of inertia.

[0119] The first deflection module 504 is configured to calculate the first deflection based on the probe rod length and the preset probe rod inclination angle. The first deflection represents the maximum deformation degree of the probe rod. The preset probe rod inclination angle represents the maximum inclination angle of the probe rod.

[0120] The second stiffness module 505 is configured to calculate the second stiffness based on the probe rod length, the bending moment and the first deflection.

[0121] The compensation constraint module 506 is configured to calculate the constraint compensation stiffness based on the first stiffness and the second stiffness, and constrain the probe rod based on the constraint compensation stiffness.

[0122] Optionally, the action load module comprises:

[0123] The drag sub-module is configured to obtain the flow rate and the density of the sea wave, and calculate the drag force of the sea wave based on the flow rate and the density.

[0124] Optionally, the action load module comprises:

[0125] An inertial sub-module is configured to acquire acceleration and density of the sea wave, and calculate an inertial force of the sea wave based on the acceleration and the density.

[0126] An optional compensation constraint module includes:

[0127] A stiffness difference sub-module is configured to determine a constraint compensation stiffness based on a difference between the first stiffness and the second stiffness.

[0128] A material modulus sub-module is configured to acquire a target material type of the constraint component, and determine a target material modulus corresponding to the target material type according to a mapping relationship between material types and material moduli. The target material modulus represents an anti-deformation capability of the target material type.

[0129] A cross-sectional area sub-module is configured to determine a cross-sectional area of the constraint component based on the constraint compensation stiffness and the target material modulus, and constrain the probe rod based on the constraint component with the cross-sectional area.

[0130] Optionally, the cross-sectional area sub-module includes:

[0131] A design structure unit is configured to acquire a design structure type of the constraint component, and determine a target cross-sectional formula corresponding to the design structure type according to a mapping relationship between structure types and cross-sectional formulas.

[0132] A cross-sectional formula unit is configured to calculate the cross-sectional area of the constraint component based on the constraint compensation stiffness, the target material modulus and the target cross-sectional formula.

[0133] Optionally, the cross-sectional formula unit includes:

[0134] A ring sub-unit is configured to calculate a component moment of inertia of the constraint component based on the constraint compensation stiffness and the target material modulus when the design structure type is ring-shaped.

[0135] An inner-outer diameter sub-unit is configured to calculate an inner-outer diameter of the constraint component when the constraint component is ring-shaped based on the component moment of inertia and the target cross-sectional formula, and determine the cross-sectional area based on the inner-outer diameter.

[0136] Optionally, the apparatus further includes:

[0137] A second deflection module is configured to calculate a second deflection of the probe rod based on the probe rod length, the bending moment and the first stiffness. The second deflection represents a deformation degree of the probe rod under the bending moment.

[0138] A third deflection module is configured to calculate a third deflection of the constraint assembly according to the assembly length of the constraint assembly, the bending moment and the constraint compensation stiffness, wherein the third deflection represents a deformation degree of the constraint assembly under the bending moment.

[0139] A deflection comparison module is configured to determine that a sum of the second deflection and the third deflection is less than or equal to the first deflection.

[0140] In summary, in the embodiments of the present application, the force of the sea wave acting on the probe rod can be obtained, and the sea wave load on the probe rod can be determined based on the force. The bending moment of the probe rod can be calculated according to the sea wave load and the probe rod length. The first stiffness of the probe rod can be calculated based on the probe rod modulus and the probe rod moment of inertia, and the first deflection can be calculated based on the probe rod length and the preset probe rod inclination angle. The second stiffness can be calculated based on the probe rod length, the bending moment and the first deflection. The constraint compensation stiffness can be accurately calculated based on the first stiffness and the second stiffness, and the probe rod can be constrained based on the constraint compensation stiffness. The constraint compensation stiffness required under a specific sea wave load can be accurately calculated based on various parameters of the probe rod itself, including the length, the stiffness and the bending moment, so that the bending of the probe rod under the action of the sea wave can be avoided, and the stability of the probe rod during operation can be improved.

[0141] Figure 6 FIG. 8 is a block diagram of an electronic device 800 according to an example embodiment. The electronic device 800 can be a mobile phone, a computer, a digital broadcasting terminal, a message receiving device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like, for example.

[0142] Referring to Figure 6 The electronic device 800 can include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0143] The processing component 802 generally controls the overall operations of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 can include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. In addition, the processing component 802 can include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0144] The memory 804 is used to store various types of data to support operations of the electronic device 800. Examples of these data include instructions for any application programs or methods operating on the electronic device 800, contact data, phonebook data, messages, pictures, multimedia, etc. The memory 804 can be implemented by any type of volatile or nonvolatile memory devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disc or optical disc.

[0145] The power supply component 806 supplies power for various components of the electronic device 800. The power supply component 806 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.

[0146] The multimedia component 808 includes a screen providing an output interface between the electronic device 800 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. The front and rear cameras can receive external multimedia data when the electronic device 800 is in an operating mode, such as a photographing mode or a multimedia mode. Each of the front and rear cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0147] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) to receive an external audio signal when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 also includes a speaker to output audio signals.

[0148] The I / O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which can be a keypad, a click wheel, buttons, etc. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0149] The sensor component 814 includes one or more sensors for providing status assessments for various aspects of the electronic device 800. For example, the sensor component 814 can detect an open / closed position of the electronic device 800, relative positioning of components, such as a display and a keypad of the electronic device 800, a change in position of the electronic device 800 or a component of the electronic device 800, presence or absence of user contact with the electronic device 800, orientation or acceleration / deceleration / g-force and temperature of the electronic device 800. The sensor component 814 can include an optical sensor for detecting ambient light, a proximity sensor for detecting nearby objects without any physical touch, a CMOS or CCD image sensor for use in imaging applications, or an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor in some embodiments.

[0150] The communication component 816 facilitates wired or wireless communication in a distributed network using one or more communication standards including, but not limited to, Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), Long-Term Evolution (LTE), and others. The communication component 816 includes one or more transmitters, receivers, transceivers, radios, network interfaces, and / or other communication interfaces to facilitate wired or wireless communication for the electronic device 800. In an example embodiment, the communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system using a single frequency network or other approaches. In an example embodiment, the communication component 816 can also include a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, Ultra-Wide Band (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0151] In an example embodiment, the electronic device 800 can be implemented using one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components to implement the method for constraining a riser of an offshore platform.

[0152] In an example embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, is also provided. The instructions can be executable by the processor 820 of the electronic device 800 to implement the method described above. For example, the non-transitory storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, and the like.

[0153] Figure 7is a block diagram of an electronic device 900 shown in an example embodiment. For example, the electronic device 900 can be provided as a server. Referring to FIG. 9, the electronic device 900 includes a processing component 922, a memory 932, an input / output (I / O) interface 958, a communication interface 950, and a power supply component 926. Figure 7 The electronic device 900 includes the processing component 922, which is further composed of one or more processors, and memory resources represented by the memory 932 for storing instructions, such as application programs, executable by the processing component 922. The application programs stored in the memory 932 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 922 is configured to execute the instructions to perform a method for constraint of a probe of an offshore platform according to an embodiment of the present application.

[0154] The electronic device 900 can also include a power supply component 926 configured to perform power management of the electronic device 900, a wired or wireless network interface 850 configured to connect the electronic device 900 to a network, and the input / output (I / O) interface 958. The electronic device 900 can operate based on an operating system stored in the memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0155] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0156] It is to be understood that the application is not limited to the precise construction described and as shown in the attached figures, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be determined by the claims appended hereto.

Claims

1. A probe restraint method for an offshore platform, characterized in that, The method includes: The force exerted by ocean waves on the probe is obtained, and the wave load on the probe is determined based on the force. The bending moment of the probe is calculated based on the wave load and the probe length. The first stiffness of the probe is determined based on the probe modulus and the probe moment of inertia. Based on the probe length and the preset probe inclination angle, a first deflection is calculated; the first deflection represents the maximum deformation of the probe; the preset probe inclination angle represents the maximum inclination angle of the probe. The second stiffness is calculated based on the probe length, the bending moment, and the first deflection. Based on the first stiffness and the second stiffness, the constraint compensation stiffness is calculated, and the probe is constrained based on the constraint compensation stiffness.

2. The method according to claim 1, characterized in that, The step of obtaining the force exerted by the ocean waves on the probe includes: The flow velocity and density of the ocean waves are obtained, and the drag force of the ocean waves is calculated based on the flow velocity and density.

3. The method according to claim 1, characterized in that, The step of obtaining the force exerted by the ocean waves on the probe includes: The acceleration and density of the ocean waves are obtained, and the inertial force of the ocean waves is calculated based on the acceleration and density.

4. The method according to claim 1, characterized in that, The step of calculating the constraint compensation stiffness based on the first stiffness and the second stiffness, and constraining the probe rod based on the constraint compensation stiffness, includes: The constraint compensation stiffness is determined based on the difference between the first stiffness and the second stiffness. Obtain the target material type of the constraint component, and determine the target material modulus corresponding to the target material type based on the mapping relationship between material type and material modulus; the target material modulus represents the deformation resistance of the target material type. Based on the constraint compensation stiffness and the target material modulus, the cross-sectional area of ​​the constraint component is determined, and the probe is constrained based on the constraint component having the cross-sectional area.

5. The method according to claim 4, characterized in that, The step of determining the cross-sectional area of ​​the constraint component based on the constraint compensation stiffness and the target material modulus includes: Obtain the design structure type of the constraint component, and determine the target section formula corresponding to the design structure type based on the mapping relationship between the structure type and the section formula; Based on the constraint compensation stiffness, the target material modulus, and the target cross-sectional formula, the cross-sectional area of ​​the constraint component is calculated.

6. The method according to claim 5, characterized in that, The step of calculating the cross-sectional area of ​​the constraint component based on the constraint compensation stiffness, the target material modulus, and the target cross-sectional formula includes: When the design structure type is ring-shaped, the component moment of inertia of the constraint component is calculated based on the constraint compensation stiffness and the target material modulus. Based on the component's moment of inertia and the target cross-section formula, the inner and outer diameters of the constraint component when it is an annular shape are calculated, and the cross-sectional area is determined based on the inner and outer diameters.

7. The method according to claim 6, characterized in that, The method further includes: The second deflection of the probe is calculated based on the probe length, the bending moment, and the first stiffness; the second deflection represents the degree of deformation of the probe under the bending moment. The third deflection of the constraint component is calculated based on the component length, the bending moment, and the constraint compensation stiffness; the third deflection represents the degree of deformation of the constraint component under the bending moment. The sum of the second deflection and the third deflection is determined to be less than or equal to the first deflection.

8. A probe restraint device for an offshore platform, characterized in that, The device includes: The applied load module is used to acquire the force exerted by the waves on the probe and to determine the wave load on the probe based on the applied force. The bending moment module is used to calculate the bending moment of the probe based on the wave load and the probe length. The first stiffness module is used to determine the first stiffness of the probe rod based on the probe rod modulus and the probe rod moment of inertia. The first deflection module is used to calculate a first deflection based on the probe length and the preset probe inclination angle; the first deflection represents the maximum deformation of the probe; the preset probe inclination angle represents the maximum inclination angle of the probe; The second stiffness module is used to calculate the second stiffness based on the probe length, the bending moment, and the first deflection; The compensation constraint module is used to calculate the constraint compensation stiffness based on the first stiffness and the second stiffness, and to constrain the probe rod based on the constraint compensation stiffness.

9. An electronic device, characterized in that, include: The system includes a processor, a communication interface, a memory, and a communication bus; the processor, communication interface, and memory communicate with each other via the communication bus. Memory, used to store computer programs; The processor, when executing a program stored in memory, implements the steps of the probe restraint method for an offshore platform as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the steps in the probe restraint method for an offshore platform as described in any one of claims 1 to 7.

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