Steel pipe pile design method, device and equipment for restraining vortex-induced vibration and medium

Abstract

The invention discloses a steel pipe pile design method and device for restraining vortex-induced vibration, equipment and a medium. The design method comprises the following steps: acquiring a plurality of ocean current flow velocities within a preset time, and determining an ocean current flow velocity range; according to the ocean current flow velocity range, the vortex falling frequency range of the steel pipe pile is determined; determining the inherent frequency of the steel pipe pile; when the inherent frequency of the steel pipe pile is within the vortex falling frequency range of the steel pipe pile, the target frequency of the steel pipe pile is determined; according to the inherent frequency and the target frequency of the steel pipe pile, the actual filling height of the filling material is determined; and according to the actual filling height, filling materials are controlled to fill the steel pipe piles. According to the method, additional devices are avoided, the critical flow velocity range of vortex-induced vibration resonance is narrowed only by changing the structure of the steel pipe pile, and the vibration amplitude is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean engineering, and in particular to a steel pipe pile design method and device for suppressing vortex-induced vibration, equipment and medium. BACKGROUND

[0002] In the field of ocean engineering, structures such as offshore trestles and platform jacket often use steel pipe piles as foundation supports. When the sea current flows through such bluff structures, periodic vortex shedding occurs behind them, producing alternating fluid forces, which in turn induce harmful periodic vibrations of the structures, i.e. vortex-induced vibration. This long-term high-frequency vibration easily causes fatigue damage at stress concentration areas such as the root of the steel pipe pile, seriously threatening the safety and durability of the structure, and is a key problem that must be addressed in engineering design and operation.

[0003] Currently, the technical approach to suppressing vortex-induced vibration in engineering practice mainly follows the principles of "external addition" and "passive resistance", that is, by adding additional devices to the main structure to passively change the flow field or dissipate energy. One common approach is the structure guide method, which aims to interfere with the flow field by changing the shape of the pile body to disrupt the regularity of vortex shedding. For example, a spiral side plate is welded to the outside of the pile body to guide the water flow and disrupt the synchronization of vortices, but this method significantly increases the water resistance area, exacerbating the conventional wave and current loads, and has problems such as complex manufacturing and installation, easy corrosion damage, etc. Another solution is to install a streamlined fairing to avoid vortex generation in principle, but it is expensive, bulky, difficult to install, and its reliability in complex underwater environments also faces challenges. Another approach is the dynamic tuning method, a typical representative being the tuned mass damper, which installs a spring-mass-damper system on the pile body or pile top and tunes its frequency to the natural frequency of the pile body, using the resulting counteracting inertial force to offset the vibration. However, this solution is precise in system design and high in cost, and is extremely sensitive to frequency tuning accuracy. Once the pile body frequency changes due to corrosion or scour, etc., the vibration suppression effect will be significantly reduced or even fail, and its installation and maintenance are also inconvenient.

[0004] Therefore, existing technologies are all based on the traditional paradigm of adding additional devices to the main structure, which can alleviate vibration to some extent, but inevitably leads to a series of derivative problems such as increased cost, structural complexity, potential reduction in system reliability, and increased difficulty in maintenance. SUMMARY

[0005] The present application provides a steel pipe pile design method and device for suppressing vortex-induced vibration, which avoids adding additional devices and only changes the structure of the steel pipe pile itself, thereby reducing the critical flow velocity range for vortex-induced vibration resonance and reducing the vibration amplitude.

[0006] In a first aspect, the present invention provides a design method for steel pipe piles that suppress vortex-induced vibration, comprising:

[0007] Within a preset time period, acquire multiple ocean current velocities and determine the range of ocean current velocities;

[0008] The vortex shedding frequency range of the steel pipe pile is determined based on the current velocity range.

[0009] Determine the natural frequency of the steel pipe pile;

[0010] When the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile, the target frequency of the steel pipe pile is determined;

[0011] The actual filling height of the filling material is determined based on the natural frequency and the target frequency of the steel pipe pile.

[0012] The steel pipe pile is filled with the filling material according to the actual filling height.

[0013] Optionally, determining the natural frequency of the steel pipe pile includes:

[0014] Obtain the height of the steel pipe pile Outer diameter D, inner diameter d, and density ,

[0015] Calculate the mass of the steel pipe pile and stiffness K;

[0016] According to the formula Calculate the natural frequency of the steel pipe pile. .

[0017] Optionally, the ocean current velocity range is: ,

[0018] Based on the aforementioned ocean current velocity range, the vortex shedding frequency range of the steel pipe pile is determined, including:

[0019] Obtain the outer diameter D of the steel pipe pile;

[0020] According to the formula Calculate the vortex shedding frequency range of the steel pipe pile. .

[0021] Optionally, when the natural frequency of the steel pipe pile is within the vortex shedding frequency range of the steel pipe pile, determining the target frequency of the steel pipe pile includes:

[0022] According to the formula Calculate the target frequency of the steel pipe pile. ;

[0023] wherein and , represents a safety factor, is the minimum value of the range of vortex shedding frequency.

[0024] Optionally, according to the natural frequency of the steel pipe pile and the target frequency, an actual filling height of the filling material is determined, comprising:

[0025] According to the formula , the mass of the filling material is calculated ;

[0026] The density of the filling material is obtained ;

[0027] According to the formula , the theoretical filling height of the filling material is calculated ;

[0028] When the theoretical filling height of the filling material is less than the height of the steel pipe pile , the theoretical filling height of the filling material is determined as the actual filling height of the filling material;

[0029] When the theoretical filling height of the filling material is greater than or equal to the height of the steel pipe pile , the height of the steel pipe pile is determined as the actual filling height of the filling material.

[0030] Optionally, after filling the steel pipe pile with the filling material according to the actual filling height, further comprising:

[0031] determining a relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling to obtain a first relationship curve;

[0032] determining a relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling to obtain a second relationship curve;

[0033] According to the first relationship curve and the second relationship curve, it is judged whether the suppression result of vortex-induced vibration is qualified.

[0034] Optionally, determining a relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling to obtain a first relationship curve, comprising:

[0035] calculating the reduced velocity of the steel pipe pile under different sea current flow rates;

[0036] Test the vibration amplitude of the steel pipe pile before filling at different reduced velocities, and calculate the ratio of the vibration amplitude to the outer diameter of the steel pipe pile to obtain a first ratio;

[0037] Determine the relationship curve of the first ratio and the reduced velocity to obtain a first relationship curve;

[0038] Determine the relationship curve of the vibration amplitude and the reduced velocity of the steel pipe pile after filling to obtain a second relationship curve, comprising:

[0039] Calculate the reduced velocity of the steel pipe pile at different sea current velocities;

[0040] Test the vibration amplitude of the steel pipe pile after filling at different reduced velocities, and calculate the ratio of the vibration amplitude to the outer diameter of the steel pipe pile to obtain a second ratio;

[0041] Determine the relationship curve of the second ratio and the reduced velocity to obtain a second relationship curve.

[0042] In a second aspect, the present application also provides a steel pipe pile design device for suppressing vortex-induced vibration, comprising:

[0043] a data acquisition and processing module,

[0044] for obtaining a plurality of sea current velocities within a preset time to determine a sea current velocity range;

[0045] and for determining a vortex shedding frequency range of the steel pipe pile according to the sea current velocity range;

[0046] and for determining the natural frequency of the steel pipe pile;

[0047] and for determining a target frequency of the steel pipe pile when the natural frequency of the steel pipe pile is within the vortex shedding frequency range of the steel pipe pile;

[0048] and for determining an actual filling height of the filling material according to the natural frequency and the target frequency of the steel pipe pile;

[0049] an execution module for controlling the filling of the steel pipe pile with the filling material according to the actual filling height.

[0050] In a third aspect, the present application also provides an electronic device, comprising:

[0051] one or more processors;

[0052] a storage device for storing one or more programs;

[0053] When the one or more programs are executed by the one or more processors, the one or more processors implement the steel pipe pile design method for suppressing vortex-induced vibration as any one of the first aspect.

[0054] In a fourth aspect, the present application further provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the steel pipe pile design method for suppressing vortex-induced vibration as any one of the first aspect.

[0055] The steel pipe pile design method for suppressing vortex-induced vibration, device, equipment and medium provided by the present application increase the filling material in the internal cavity of the steel pipe pile, increase the overall mass of the structure, adjust the natural frequency of the steel pipe pile, make the natural frequency far away from the vortex shedding frequency, narrow the critical flow velocity range of vortex-induced vibration resonance, and reduce the vibration amplitude. At the same time, additional devices are avoided, and vortex-induced vibration can be suppressed only by changing the structure of the steel pipe pile itself, which has the advantages of simplicity, economy, reliability and low maintenance cost.

[0056] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0058] Figure 1 A flowchart of a steel pipe pile design method for suppressing vortex-induced vibration provided by an embodiment of the present application is shown in the figure.

[0059] Figure 2 A flowchart of another steel pipe pile design method for suppressing vortex-induced vibration provided by an embodiment of the present application is shown in the figure.

[0060] Figure 3 A relationship curve diagram of the vibration amplitude of the steel pipe pile before and after filling the filling material and the reduced velocity provided by an embodiment of the present application is shown in the figure.

[0061] Figure 4 Another relationship curve diagram of the vibration amplitude of the steel pipe pile before and after filling the filling material and the reduced velocity provided by an embodiment of the present application is shown in the figure.

[0062] Figure 5 A structural schematic diagram of a steel pipe pile design device for suppressing vortex-induced vibration provided by the present application is shown in the figure.

[0063] Figure 6 A structural schematic diagram of an electronic device provided by the present application is shown in FIG. 1. DETAILED DESCRIPTION

[0064] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended for the purpose of interpretation of the present application and are not intended to limit the present application. It should also be noted that, for the purpose of description, only the parts related to the present application are shown in the accompanying drawings, rather than all the parts.

[0065] The terms used in the embodiments of the present application are merely intended for the purpose of description of specific embodiments and are not intended to limit the present application. It should be noted that the orientation terms such as “upper”, “lower”, “left”, “right” and the like described in the embodiments of the present application are described in the angle shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, it should also be understood in the context that when referring to one element being formed “on” or “under” another element, it can be directly formed “on” or “under” another element, or indirectly formed “on” or “under” another element through an intermediate element. The terms “first”, “second” and the like are merely for the purpose of description and do not represent any order, quantity or importance, but are only used to distinguish different components. The specific meanings of the above terms in the present application can be understood by the person skilled in the art according to the specific circumstances.

[0066] The term “including” and its variants used in the present application are open inclusion, i.e. “including but not limited to”. The term “based on” is “at least partially based on”. The term “one embodiment” means “at least one embodiment”.

[0067] It should be noted that the concepts of “first”, “second” and the like mentioned in the present application are only used to distinguish the corresponding content and are not used to limit the order or mutual dependency.

[0068] It should be noted that the modification of “one” or “multiple” mentioned in the present application is illustrative rather than limiting, and the person skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as “one or more”.

[0069] Figure 1 A flowchart of a design method of a vortex-induced vibration suppression steel pipe pile provided by the embodiments of the present application is shown in FIG. 2, which includes the following steps. Figure 1

[0070] S101, acquiring a plurality of sea current flow velocities within a preset time to determine a sea current flow velocity range.

[0071] ​Specifically, since the vibration amplitude of the steel pipe pile is different under different current flow rates, and the current flow rate is constantly changing in a period of time, a plurality of current flow rates V can be obtained in a preset time, so as to determine a current flow rate range , i.e. the maximum value of the current flow rate and the minimum value , and further determine the vibration amplitude of the steel pipe pile under different current flow rates. For example, the preset time can be 24 hours, by observing the change of the current flow rate in a day, the vibration amplitude of the steel pipe pile in a day is determined, and whether the steel pipe pile will be damaged is judged.

[0072] S102, determining a vortex shedding frequency range of the steel pipe pile according to the current flow rate range.

[0073] Specifically, when the current flows through the steel pipe pile at different flow rates, the vortexes generated and shed behind the steel pipe pile per second are different, so the vortex shedding frequency range of the steel pipe pile can be determined according to the current flow rate range.

[0074] In an optional embodiment, the steel pipe pile is a hollow cylinder, the outer diameter D of the steel pipe pile is obtained, and the vortex shedding frequency range of the steel pipe pile is further calculated according to the formula It can be seen that when the current flow rate has a minimum value , the vortex shedding frequency also has a minimum value , and when the current flow rate has a maximum value , the vortex shedding frequency also has a maximum value .

[0075] S103, determining the natural frequency of the steel pipe pile.

[0076] Specifically, when the steel pipe pile is located in seawater, it will also swing back and forth at a fixed frequency, so the natural frequency of the steel pipe pile can be determined according to the parameters of the steel pipe pile .

[0077] In an optional embodiment, by obtaining the height , outer diameter D, inner diameter d and density of the steel pipe pile, the mass and stiffness K of the steel pipe pile can be calculated, wherein the mass , the stiffness , and E is the elastic model of the material of the steel pipe pile. Further, the natural frequency of the steel pipe pile can be calculated according to the formula It can be seen that the natural frequency of the steel pipe pile decreases with the increase of the mass of the steel pipe pile. ​

[0078] S104. When the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile, determine the target frequency of the steel pipe pile.

[0079] Specifically, when the natural frequency of a steel pipe pile is close to its vortex shedding frequency, resonance occurs, leading to an increase in the vibration amplitude of the steel pipe pile. In other words, at a certain ocean current velocity, if the ratio of the vortex shedding frequency to the natural frequency of the steel pipe pile is within a certain preset range, resonance is likely to occur. Therefore, when the natural frequency of the steel pipe pile is within the range of its vortex shedding frequency, the natural frequency can be altered by changing the mass of the steel pipe pile, thus moving it away from the vortex shedding frequency and reducing the vibration amplitude. Therefore, the vibration amplitude can be reduced based on the range of the vortex shedding frequency of the steel pipe pile. Determine the target frequency of the steel pipe pile. It is understandable that the target frequency is the natural frequency of the steel pipe pile after the quality of the steel pipe pile is adjusted.

[0080] In an alternative embodiment, it can be based on the formula Calculate the target frequency of the steel pipe pile. ,in This represents the minimum vortex shedding frequency of the steel pipe pile. and , This represents the safety factor. It's understandable that when filling the hollow interior of a steel pipe pile with material, the pile's stiffness remains constant, but its mass increases according to the formula... It can be seen that as the mass of the steel pipe pile increases, the natural frequency of the steel pipe pile decreases. Therefore, according to the formula... Determine the target frequency of steel pipe piles At that time, the target frequency of the steel pipe pile It should be less than the natural frequency of the steel pipe pile. ,therefore For example, the filler material can be a granular material.

[0081] Furthermore, when At this time, the target frequency of the steel pipe pile The frequency of the steel pipe pile is outside the vortex shedding frequency range, therefore the steel pipe pile will not resonate, and the vibration amplitude of the steel pipe pile can be reduced. However, this is limited by the height of the steel pipe pile. When the ocean current velocity range is wide, At this time, the target frequency of the steel pipe pile satisfy At this time, although the target frequency of the steel pipe pile It remains within the vortex shedding frequency range, but the vortex shedding frequency of the steel pipe pile differs from the target frequency of the steel pipe pile. When the ratio of the vortex shedding frequency and the natural frequency of the steel pipe pile meets the same preset ratio range, the range of the corresponding vortex shedding frequency is narrowed, that is, the purpose of narrowing the vortex shedding range of the resonance phenomenon is achieved, and the vibration amplitude is also reduced.

[0082] S105, determining the actual filling height of the filling material according to the natural frequency of the steel pipe pile and the target frequency.

[0083] Specifically, after the target frequency of the steel pipe pile is determined, the actual filling height of the filling material can be determined according to the natural frequency of the steel pipe pile and the target frequency.

[0084] In an optional embodiment, the mass of the filling material is first calculated according to the formula The mass of the filling material is calculated according to the formula Further, the density of the filling material is obtained For example, the filling material can be selected according to the material cost and construction difficulty. Further, the theoretical filling height of the filling material can be calculated according to the formula That is, the theoretical filling height of the filling material .

[0085] Further, when the theoretical filling height of the filling material is less than the height of the steel pipe pile , the theoretical filling height of the filling material is determined as the actual filling height of the filling material, and when the theoretical filling height of the filling material is greater than or equal to the height of the steel pipe pile , the height of the steel pipe pile is determined as the actual filling height of the filling material, so as to avoid that the height of the filling material exceeds the maximum height allowed by the steel pipe pile.

[0086] S106, filling the steel pipe pile with the filling material according to the actual filling height.

[0087] Specifically, the steel pipe pile is filled with the filling material according to the actual filling height, so as to achieve the purpose of increasing the mass of the steel pipe pile, and further change the natural frequency of the steel pipe pile, reduce the vibration amplitude of the steel pipe pile and narrow the flow velocity range of the resonance.

[0088] The embodiment of the present application increases the mass of the structure by adding the filling material to the internal cavity of the steel pipe pile, so as to adjust the natural frequency of the steel pipe pile, make the natural frequency far away from the vortex shedding frequency, narrow the critical flow velocity range of the vortex-induced vibration resonance, and reduce the vibration amplitude. At the same time, additional devices are avoided, and the vortex-induced vibration can be suppressed only by changing the structure of the steel pipe pile itself, which has the advantages of simplicity, economy, reliability and low maintenance cost.

[0089] Figure 2This is a flowchart illustrating another design method for suppressing vortex-induced vibration of steel pipe piles provided by an embodiment of the present invention. After step S106, where the steel pipe pile is filled with filling material according to the actual filling height, the method further includes:

[0090] The relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling was determined, and the first relationship curve was obtained;

[0091] The relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling was determined, and the second relationship curve was obtained.

[0092] Based on the first and second relationship curves, determine whether the suppression result of vortex-induced vibration is qualified.

[0093] For parts not described in detail in this embodiment, please refer to the foregoing embodiments, such as... Figure 2 As shown, the design method provided in this embodiment includes:

[0094] S201. Within a preset time period, acquire multiple ocean current velocities and determine the range of ocean current velocities.

[0095] S202. Determine the vortex shedding frequency range of steel pipe piles based on the ocean current velocity range.

[0096] S203. Determine the natural frequency of the steel pipe pile.

[0097] S204. When the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile, determine the target frequency of the steel pipe pile.

[0098] S205. Determine the actual filling height of the filling material based on the natural frequency and target frequency of the steel pipe pile.

[0099] S206. According to the actual filling height, control the filling material used to fill the steel pipe piles.

[0100] S207. Determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling, and obtain the first relationship curve.

[0101] Specifically, since steel pipe piles exhibit different vibration amplitudes (y) under different ocean current velocities, and for fixed structures, ocean current velocity can be characterized by reduced velocity, the reduced velocity of the steel pipe piles under different ocean current velocities is calculated. , Furthermore, the vibration amplitude y1 of the steel pipe pile before filling can be tested at different reduced velocities, and the ratio of the vibration amplitude y1 to the outer diameter D of the steel pipe pile can be calculated to obtain the first ratio A1. It should be noted that, for fixed structures, the reduced velocity is directly proportional to the ocean current velocity. Therefore, testing the vibration amplitude y1 of the steel pipe pile at different reduced velocities can also be done at different ocean current velocities. Furthermore, Figure 3 A graph showing the relationship between the vibration amplitude and the reduced velocity of a steel pipe pile before and after filling with a filling material is provided in an embodiment of the present invention. Figure 3 As shown, the relationship curve between the first ratio and the reduction rate can be determined, and the first relationship curve can be obtained.

[0102] S208. Determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling, and obtain the second relationship curve.

[0103] Specifically, after filling, the reduced velocity of the steel pipe pile under different ocean current velocities is calculated. , Using the same method, the vibration amplitude y2 of the filled steel pipe pile under different reduced velocities was tested, and the ratio of the vibration amplitude y2 to the outer diameter D of the steel pipe pile was calculated to obtain the second ratio A2. Furthermore, such as Figure 3 As shown, the relationship curve between the second ratio and the reduction rate can be determined, and the second relationship curve can be obtained.

[0104] S209. Based on the first and second relationship curves, determine whether the suppression result of vortex-induced vibration is qualified.

[0105] Specifically, such as Figure 3 As shown, when the reduced velocity is in the range of 2 to 8, the first ratio A1 of the steel pipe pile before filling continuously increases with the increase of the reduced velocity. The second ratio A2 of the steel pipe pile after filling has a maximum value, and when the reduced velocity is in the range of 2 to 3, the second ratio is less than 0.1. Therefore, it indicates that the resonance range of the steel pipe pile has been narrowed. Moreover, at the same reduced velocity, the second ratio A2 is less than the first ratio A1, indicating that compared with the steel pipe pile before filling, the vibration amplitude of the steel pipe pile is significantly reduced after filling, indicating that vortex-induced vibration is effectively suppressed, and the suppression result is qualified. Figure 4 Another curve showing the relationship between the vibration amplitude and the reduced velocity of the steel pipe pile before and after filling with a different material is provided in this embodiment of the invention. Figure 4 As shown, the vibration amplitude of the steel pipe pile was effectively reduced before and after filling, and by 28.57%.

[0106] In this embodiment of the invention, after the steel pipe pile is filled, the vibration amplitude of the steel pipe pile before and after filling is tested under different ocean current velocities to obtain a first relationship curve and a second relationship curve. By comparing the first relationship curve and the second relationship curve, it is determined that the vibration amplitude of the steel pipe pile after filling is lower than that of the steel pipe pile before filling, and the resonance range is also narrowed. At this point, the suppression result of vortex-induced vibration is determined to be qualified.

[0107] Figure 5 A schematic diagram of a steel pipe pile design device for suppressing vortex-induced vibration provided by the present invention is shown below. Figure 5 As shown, the design device for suppressing vortex-induced vibration of steel pipe piles includes:

[0108] Data acquisition and processing module 201,

[0109] Used to acquire multiple ocean current velocities within a preset time period and determine the range of ocean current velocities;

[0110] It is also used to determine the range of vortex shedding frequency of steel pipe piles based on the range of ocean current velocities;

[0111] It is also used to determine the natural frequency of steel pipe piles;

[0112] It is also used to determine the target frequency of a steel pipe pile when the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile.

[0113] It is also used to determine the actual filling height of the filling material based on the natural frequency and target frequency of the steel pipe pile;

[0114] The execution module 202 is used to control the filling of the steel pipe pile with filling material according to the actual filling height.

[0115] Optionally, the data acquisition and processing module 201 can also be used to: obtain the height of the steel pipe pile. Outer diameter D, inner diameter d, and density Calculate the mass of the steel pipe pile and stiffness K; according to the formula Calculate the natural frequency of the steel pipe pile. .

[0116] Optionally, the data acquisition and processing module 201 can also be used to: obtain the outer diameter D of the steel pipe pile; and according to the formula Calculate the vortex shedding frequency range of steel pipe piles. .

[0117] Optionally, the data acquisition and processing module 201 can also be used to: according to the formula Calculate the target frequency of the steel pipe pile. ;in and , Indicates the safety factor. This represents the minimum value in the range of vortex shedding frequencies.

[0118] Optionally, the data acquisition and processing module 201 can also be used to: according to the formula Calculate the mass of the filler material ; Obtain the density of the filling material According to the formula Calculate the theoretical filling height of the filler material. ; at the theoretical filling height of the filling material Less than the height of steel pipe piles At that time, the theoretical filling height of the filling material will be... The actual filling height of the filler material is determined; the theoretical filling height of the filler material is also determined. Greater than or equal to the height of the steel pipe pile At that time, the height of the steel pipe piles The actual filling height of the filler material is determined.

[0119] Optionally, the steel pipe pile design device for suppressing vortex-induced vibration further includes a suppression result determination module 203, which is used to: determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling, and obtain a first relationship curve; determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling, and obtain a second relationship curve; and determine whether the suppression result of vortex-induced vibration is qualified based on the first relationship curve and the second relationship curve.

[0120] Optionally, the suppression result determination module 203 can also be used to: calculate the reduced velocity of the steel pipe pile under different ocean current velocities; test the vibration amplitude of the steel pipe pile under different reduced velocities before filling, and calculate the ratio of the vibration amplitude to the outer diameter of the steel pipe pile to obtain a first ratio; determine the relationship curve between the first ratio and the reduced velocity to obtain a first relationship curve; calculate the reduced velocity of the steel pipe pile under different ocean current velocities; test the vibration amplitude of the steel pipe pile under different reduced velocities after filling, and calculate the ratio of the vibration amplitude to the outer diameter of the steel pipe pile to obtain a second ratio; determine the relationship curve between the second ratio and the reduced velocity to obtain a second relationship curve.

[0121] Figure 6This is a schematic diagram of an electronic device provided by the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0122] like Figure 6 As shown, the electronic device includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer programs stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0123] Multiple components in the electronic device are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless transceiver, etc. The communication unit 19 allows the electronic device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0124] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the design method for suppressing vortex-induced vibrations in steel pipe piles.

[0125] In some embodiments, the design method for suppressing vortex-induced vibration of steel pipe piles can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on an electronic device via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the design method for suppressing vortex-induced vibration of steel pipe piles described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the design method for suppressing vortex-induced vibration of steel pipe piles by any other suitable means (e.g., by means of firmware).

[0126] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0127] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0128] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0129] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0130] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0131] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0132] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steel pipe pile design method for suppressing vortex-induced vibration as provided in any embodiment of this application.

[0133] In implementing the computer program product, computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0134] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0135] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A design method for steel pipe piles to suppress vortex-induced vibration, characterized in that, include: Within a preset time period, acquire multiple ocean current velocities and determine the range of ocean current velocities; The vortex shedding frequency range of the steel pipe pile is determined based on the current velocity range. Determine the natural frequency of the steel pipe pile; When the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile, the target frequency of the steel pipe pile is determined; The actual filling height of the filling material is determined based on the natural frequency and the target frequency of the steel pipe pile. The steel pipe pile is filled with the filling material according to the actual filling height.

2. The design method according to claim 1, characterized in that, Determining the natural frequency of the steel pipe pile includes: Obtain the height of the steel pipe pile Outer diameter D, inner diameter d, and density , Calculate the mass of the steel pipe pile and stiffness K; According to the formula Calculate the natural frequency of the steel pipe pile. .

3. The design method according to claim 1, characterized in that, The ocean current velocity range is: , Based on the aforementioned ocean current velocity range, the vortex shedding frequency range of the steel pipe pile is determined, including: Obtain the outer diameter D of the steel pipe pile; According to the formula Calculate the vortex shedding frequency range of the steel pipe pile. .

4. The design method according to claim 1, characterized in that, When the natural frequency of the steel pipe pile is within the vortex shedding frequency range of the steel pipe pile, determining the target frequency of the steel pipe pile includes: According to the formula Calculate the target frequency of the steel pipe pile. ; in and , Indicates the safety factor. This represents the minimum value in the range of vortex shedding frequencies.

5. The design method according to claim 2, characterized in that, The actual filling height of the filling material is determined based on the natural frequency and the target frequency of the steel pipe pile, including: According to the formula Calculate the mass of the filler material. ; Obtain the density of the filler material ; According to the formula Calculate the theoretical filling height of the filling material. ; The theoretical filling height of the filling material Less than the height of the steel pipe pile At that time, the theoretical filling height of the filling material is reached. The actual filling height of the filling material is determined. The theoretical filling height of the filling material Greater than or equal to the height of the steel pipe pile At that time, the height of the steel pipe pile is... The actual filling height of the filling material is determined.

6. The design method according to claim 2, characterized in that, After filling the steel pipe pile with the filling material according to the actual filling height, the process further includes: Determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling, and obtain the first relationship curve; The relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling is determined, and a second relationship curve is obtained; Based on the first relationship curve and the second relationship curve, determine whether the suppression result of vortex-induced vibration is qualified.

7. The design method according to claim 6, characterized in that, Determine the relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile before filling, and obtain the first relationship curve, including: Calculate the reduced velocity of the steel pipe pile under different ocean current velocities; The vibration amplitude of the steel pipe pile before filling is tested at different reduced velocities, and the ratio of the vibration amplitude to the outer diameter of the steel pipe pile is calculated to obtain a first ratio. Determine the relationship curve between the first ratio and the reduction rate to obtain the first relationship curve; The relationship curve between the vibration amplitude and the reduced velocity of the steel pipe pile after filling is determined, and a second relationship curve is obtained, including: Calculate the reduced velocity of the steel pipe pile under different ocean current velocities; The vibration amplitude of the steel pipe pile after filling is tested at different reduced velocities, and the ratio of the vibration amplitude to the outer diameter of the steel pipe pile is calculated to obtain a second ratio. Determine the relationship curve between the second ratio and the reduction rate to obtain the second relationship curve.

8. A design device for suppressing vortex-induced vibration in steel pipe piles, characterized in that, include: Data acquisition and processing module Used to acquire multiple ocean current velocities within a preset time period and determine the range of ocean current velocities; It is also used to determine the vortex shedding frequency range of the steel pipe pile based on the ocean current velocity range; It is also used to determine the natural frequency of the steel pipe pile; It is also used to determine the target frequency of the steel pipe pile when the natural frequency of the steel pipe pile is within the range of the vortex shedding frequency of the steel pipe pile; It is also used to determine the actual filling height of the filling material based on the natural frequency and the target frequency of the steel pipe pile; The execution module is used to control the filling of the steel pipe pile with the filling material according to the actual filling height.

9. An electronic device, characterized in that, include: One or more processors; Storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the steel pipe pile design method for suppressing vortex-induced vibration as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the steel pipe pile design method for suppressing vortex-induced vibration as described in any one of claims 1-7.

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