An irregular wave slamming construction platform stress analysis method and system and a computer readable storage medium thereof

Abstract

The application provides an irregular wave slamming construction platform stress analysis method and system and a computer readable storage medium thereof. According to platform basic dimensions and wave basic parameters, a stress condition of the irregular wave slamming construction platform is directly, quickly and efficiently calculated based on a large amount of test measurement data. The defects of the direct calculation complexity, measurement cost and the like of the slamming pressure load prediction in the existing theoretical calculation and model test are solved.

Description

Technical Field

[0001] This invention relates to the field of impact load analysis technology, and in particular to a method, system and computer-readable storage medium for analyzing the stress on an irregular wave impact construction platform. Background Technology

[0002] Nature often presents severe environmental disasters. As my country's cross-sea bridges extend into the deep sea, their construction faces challenges such as deep water, strong currents, and large waves. To ensure the safe construction of deep-water foundations, deep-water construction platforms face even more severe challenges. Lacking harbors, breakwaters, or other protective facilities, offshore construction platforms are often directly exposed to the impact of waves. The wave height changes drastically during wave propagation, and in extreme cases, wave breakup can significantly impact the safety of marine structures. When irregular waves strike the bottom of a structure, wave slamming occurs, and its force on the platform should not be underestimated.

[0003] Assuming the irregular waves on the free surface are described by second-order Stokes waves, when the platform height Δh is lower than the upper surface height of the free surface wave or higher than the lower surface height, the presence of an air gap between the wave and the platform will cause the wave to slam against the bottom of the platform. Generally, to avoid prolonged contact with seawater and reduce the impact of wave slamming, Δh is typically ≥0. The complexity of the generation mechanism of the slamming phenomenon caused by the interaction between waves and the platform, and the strong nonlinearity of the slamming effect, mean that existing theoretical calculations or numerical simulations are insufficient to meet practical engineering needs. Furthermore, most existing studies on slamming focus on situations such as ships entering the water, with very little research on construction platforms. Summary of the Invention

[0004] The main objective of this invention is to solve the problem of directly, quickly and efficiently calculating the stress analysis of an irregular wave-impacted construction platform, and to provide a method, system and computer-readable storage medium for stress analysis of an irregular wave-impacted construction platform.

[0005] To solve the above-mentioned technical problems, one of the technical solutions adopted by the present invention is: a method for analyzing the stress on an irregular wave-impacted construction platform, the method comprising the following steps:

[0006] S1. Obtain information on the deep-water construction platform and calculate working conditions: The information on the deep-water construction platform includes the bottom area A of the platform, and the length L of the platform along and perpendicular to the wave propagation direction. B B, platform water outlet height Δh, and platform tilt angle α; calculation operating information includes the effective wave height H of the incident wave. S and effective period T S Given the water depth d at the platform's location, the wavelength L is calculated using the dispersion equation. S ;

[0007] S2. By using the method of theoretical calculation or model test, obtain the time history curve of the wave surface theoretically, and obtain the highest point a of the wave crest and the lowest point b of the wave trough. When the height Δh of the platform out of water is lower than the height of the highest point a of the wave crest and higher than the height of the lowest point b of the wave trough, that is, when b < Δh < a, it is determined that the construction platform will be subjected to slamming under the action of waves. At this time, execute S3 to S7;

[0008] S3. According to the relationship curves of the wave slamming force on the bottom of the platform and the relative length L B / L S and the relative width B / L S under the action of irregular waves at different platform heights, it is known that the wave slamming force on the bottom of the platform shows a relationship similar to the hyperbolic tangent function with both the relative length L B / L S and the relative width B / L S . After fitting, obtain the relational expressions of the wave slamming force with the relative length L B / L S and the relative width B / L S respectively;

[0009] S4. According to the relationship curves of the wave slamming force on the bottom of the platform and the relative out-of-water height Δh / H S and the inclination angle α under the action of irregular waves at different platform heights, it is known that the wave slamming force on the bottom of the platform has an exponential relationship with the relative out-of-water height Δh / H S , and the wave slamming force on the bottom of the platform has a cosine function relationship with the inclination angle α. After fitting, obtain the relational expressions of the wave slamming force with the inclination angle α of the platform and the relative out-of-water height Δh / H S respectively;

[0010] S5. According to the relationship curve of the wave slamming force on the bottom of the platform and the wave steepness H / L under the action of irregular waves at different platform heights, it is known that the wave slamming force on the bottom of the platform has an exponential relationship with the wave steepness. After fitting, obtain the relational expression of the wave slamming force with the wave steepness H s / L s ;

[0011] S6. According to the expressions of the wave slamming force on the bottom of the platform with the relative length L B / L S , the relative width B / L S , the inclination angle α of the platform, the relative out-of-water height Δh / H S and the wave steepness H s / L s , obtain the expression of the wave slamming force on the bottom of the platform;

[0012] S7. Based on the expression for the wave impact force at the bottom of the platform, and the incident effective wave height H of the prototype. S Effective period T s Platform water outlet height Δh, platform inclination angle α, platform length L B By combining the actual data of width B, the wave impact force experienced by the platform can be obtained. The actual data can cover the size range of the construction platform and the irregular wave hydrological conditions it suffers from.

[0013] Furthermore, the bottom of the platform is subjected to wave impact force relative to the platform's length L. B / L S The relation is:

[0014]

[0015] Where tanh is the hyperbolic tangent function.

[0016] Furthermore, the bottom of the platform is subjected to wave impact force relative to the platform's width B / L. S The relation is:

[0017]

[0018] Where tanh is the hyperbolic tangent function.

[0019] Furthermore, the relationship between the wave impact force on the bottom of the platform and the platform tilt angle α is as follows:

[0020]

[0021] Furthermore, the bottom of the platform is subjected to wave impact force and the platform's relative height above the water Δh / H S The relation is:

[0022]

[0023] Where e is the natural index.

[0024] Furthermore, the bottom of the platform is subjected to wave impact force and the steepness of the incident wave. s / L s The relation is:

[0025]

[0026] Furthermore, the expression for the wave impact force on the bottom of the platform is:

[0027]

[0028] Where ρ is the density of water, g is the acceleration due to gravity, and A is the bottom area of ​​the construction platform.

[0029] One of the technical solutions adopted in this invention is: a stress analysis system for an irregular wave impact construction platform, which includes at least:

[0030] Memory, used to store computer programs;

[0031] A processor is used to execute the computer program to implement the steps of the above-described method for analyzing the stress on an irregular wave-impacted construction platform.

[0032] Furthermore, the processor includes at least:

[0033] The acquisition module is used to acquire information about the deep-water construction platform and calculate working conditions.

[0034] The judgment module is used to compare the platform water outlet height Δh obtained by the acquisition module with the highest point a of the wave crest and the lowest point b of the wave trough to determine whether the conditions for the construction platform to be subjected to slamming under the action of waves are met.

[0035] The wave impact force coefficient calculation module is used to obtain the judgment conditions of the judgment module, and based on the deep-water construction platform information and calculation condition information obtained by the acquisition module, calculates the wave force coefficients from S3 to S6 relative to the platform length L. B / L s Relative width B / L s Platform tilt angle α, platform relative water outlet height Δh / H s and steep H s / L s The expression is used to calculate the wave impact force coefficient.

[0036] The wave impact force calculation module is used to input the data obtained from the wave impact force coefficient calculation module into the expression of the wave impact force on the platform in S7 to obtain the wave impact force on the platform.

[0037] One of the technical solutions adopted in this invention is: a computer-readable storage medium storing a wave impact force calculation program for a construction platform, wherein when the wave impact force calculation program for the construction platform is executed by a processor, the steps of the above-mentioned method for analyzing the force of an irregular wave impact on a construction platform are implemented.

[0038] The advantages and positive effects of this invention are: it can directly, quickly, and efficiently calculate the stress analysis of an irregular wave-impacted construction platform based on the wave impact force obtained from theoretical calculations or experimental measurements. This solves the problems of complexity and high measurement costs associated with direct calculation of impact pressure load prediction in existing theoretical calculations and model tests. Attached Figure Description

[0039] Figure 1 This is a flowchart of the stress analysis method for the construction platform in Example 1;

[0040] Figure 2 This is a schematic diagram of the calculation parameters in Example 1;

[0041] Figure 3 This is a schematic diagram of the elevation view for calculating the parameters in Example 1;

[0042] Figure 4 This is a structural framework diagram of the stress analysis system for the irregular wave impact construction platform in Example 2.

[0043] Figure 5 The wavefront time history curves in the experimental example;

[0044] Figure 6 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.00m and a platform tilt angle of 0°, the relative length of the platform (L) is... B / L S A graph showing the relationship between impact force and slam force;

[0045] Figure 7 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.00m and a platform tilt angle of 4°, the relative length of the platform (L) is... B / L S A graph showing the relationship between impact force and slam force;

[0046] Figure 8 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.02m and a platform tilt angle of -2°, the relative length of the platform (L) is... B / L S A graph showing the relationship between impact force and slam force;

[0047] Figure 9 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.02m and a platform tilt angle of 4°, the relative length of the platform (L) is... B / L S A graph showing the relationship between impact force and slam force;

[0048] Figure 10 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.00m and a platform tilt angle of -4°, the relative width of the platform (B / L) is... S A graph showing the relationship between impact force and slam force;

[0049] Figure 11 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.00m and a platform tilt angle of 4°, the relative width of the platform (B / L) is... S A graph showing the relationship between impact force and slam force;

[0050] Figure 12In the experimental example, under the action of irregular waves, with a platform height Δh = 0.02m and a platform tilt angle of -2°, the relative width of the platform (B / L) is... S A graph showing the relationship between impact force and slam force;

[0051] Figure 13 In the experimental example, under the action of irregular waves, with a platform height Δh = 0.02m and a platform tilt angle of 0°, the relative width of the platform (B / L) is... S A graph showing the relationship between impact force and slam force;

[0052] Figure 14 In the experimental example, under the action of an irregular wave, α = 0°, and the wave height H... s Graph showing the relationship between the relative height of the water outlet platform and the impact force when the height is 0.08m.

[0053] Figure 15 In the experimental example, under the action of an irregular wave, α = 0°, and the wave height H... s Graph showing the relationship between the relative height of the water outlet platform and the impact force when the height is 0.12m;

[0054] Figure 16 In the experimental example, under the action of an irregular wave, α = 4°, and the wave height H... s Graph showing the relationship between the relative height of the water outlet platform and the impact force when the height is 0.08m.

[0055] Figure 17 In the experimental example, under the action of an irregular wave, α = 4°, and the wave height H... s Graph showing the relationship between the relative height of the water outlet platform and the impact force when the height is 0.12m;

[0056] Figure 18 In the experimental example, under the action of an irregular wave, Δh=0m, the wave height H S Graph showing the relationship between the tilt angle of different platforms and the impact force when the height is 0.04m;

[0057] Figure 19 In the experimental example, under the action of an irregular wave, Δh=0m, the wave height H S Graph showing the relationship between the tilt angle of different platforms and the impact force when the height is 0.08m;

[0058] Figure 20 The graph shows the relationship between the tilt angle of different platforms and the slamming force when Δh = 0.04m and wave height H = 0.04m under the action of irregular waves in the experimental example.

[0059] Figure 21 The graph shows the relationship between the tilt angle of different platforms and the impact force when Δh = 0.04m and wave height H = 0.08m under the action of irregular waves in the experimental example.

[0060] The module includes: 1. Acquisition module; 2. Judgment module; 3. Wave impact force calculation coefficient module; 4. Wave impact force calculation module. Detailed Implementation

[0061] To better understand the present invention, the present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0062] Example 1

[0063] like Figures 1-3 As shown, a method for stress analysis of an irregular wave-impacted construction platform is presented, which includes the following steps:

[0064] S1. Obtain information on the deep-water construction platform and calculate working conditions: The information on the deep-water construction platform includes the bottom area A of the platform, and the length L of the platform along and perpendicular to the wave propagation direction. B B, platform water outlet height Δh, and platform tilt angle α; calculation operating information includes the effective wave height H of the incident wave. S and effective period T S Given the water depth d at the platform's location, the wavelength L is calculated using the dispersion equation. S ;

[0065] Assuming that irregular waves on a free surface are described by second-order Stokes waves, let A i ω i k i ε i and A j ω j k j ε j Given the amplitude, frequency, wave number, and initial phase of any two component waves in an irregular wave train, the specific wavefront expression is as follows:

[0066]

[0067] The physical quantities in the formula can be expressed as follows:

[0068] ω ± =ω i ±ω j k ± =k i ±k j , ε ± =ε i ±ε j

[0069]

[0070]

[0071]

[0072]

[0073] Among them, t is time; g is the acceleration of gravity; x is the position for calculating the wave surface height; H, G, D, and F are all intermediate variables in the calculation and have no specific meaning.

[0074] S2. By using the method of theoretical calculation or model test, obtain the theoretical time history curve of the wave surface, and obtain the highest point a of the wave crest and the lowest point b of the wave trough. When the platform water emergence height Δh is lower than the height of the highest point a of the wave crest and higher than the height of the lowest point b of the wave trough, that is, when b < Δh < a, it is determined that the construction platform will be subjected to slamming under the action of waves, and at this time, execute S3 to S7;

[0075] S3. According to the relationship curves between the wave slamming force on the bottom of the platform and the relative length L B / L S and the relative width B / L S under the action of irregular waves at different platform heights, it is known that the wave slamming force on the bottom of the platform and the platform relative length L B / L S as well as the relative width B / L S both show a relationship similar to the hyperbolic tangent function. After fitting, obtain the relationship formulas between the wave slamming force on the bottom of the platform and the platform relative length L B / L S and the relative width B / L S ;

[0076] Specifically, the relationship formula between the wave slamming force on the bottom of the platform and the platform relative length L B / L S is:

[0077]

[0078] Among them, tanh is the hyperbolic tangent function.

[0079] The relationship formula between the wave slamming force on the bottom of the platform and the platform relative width B / L S is:

[0080]

[0081] Among them, tanh is the hyperbolic tangent function.

[0082] S4. According to the relationship curves between the wave slamming force on the bottom of the platform and the relative water emergence height Δh / H​​​The wave impact force at the bottom of the platform exhibits an exponential relationship with the tilt angle α, which in turn has a cosine function relationship. After fitting, the wave impact force is obtained as a function of the platform tilt angle α and the platform's relative height above the water Δh / H. S Relationship;

[0083] Specifically, the relationship between the wave impact force on the bottom of the platform and the platform tilt angle α is as follows:

[0084]

[0085] The bottom of the platform is subjected to wave impact force and the platform's relative height above the water Δh / H. S The relation is:

[0086]

[0087] Where e is the natural index.

[0088] S5. Under the action of irregular waves, at different platform heights, the bottom of the platform is subjected to wave impact force and wave steepness H. s / L s The relationship curve shows that the wave impact force at the bottom of the platform is exponentially related to the wave steepness. After fitting, the relationship between the wave impact force at the bottom of the platform and the wave steepness H is obtained. s / L s Relationship;

[0089] Specifically, the bottom of the platform is subjected to wave impact force and the steepness of the incident wave. s / L s The relation is:

[0090]

[0091] S6. Based on the wave impact force at the bottom of the platform and its relative length L of the platform, respectively... B / L S Relative width B / L S Platform tilt angle α, platform relative water outlet height △h / H S and steep H s / L s From the expression, we obtain the expression for the wave impact force at the bottom of the platform:

[0092]

[0093] Where ρ is the density of water, g is the acceleration due to gravity, and A is the bottom area of ​​the construction platform.

[0094] S7. Based on the expression for the wave impact force at the bottom of the platform, and the incident effective wave height H of the prototype. S Effective period T sPlatform water outlet height Δh, platform inclination angle α, platform length L B The actual data of width B is used to obtain the wave impact force on the bottom of the platform. The actual data can cover the size range of the construction platform and the irregular wave hydrological conditions it suffers.

[0095] Example 2

[0096] like Figure 4 As shown, an irregular wave impact construction platform stress analysis system includes at least: a memory for storing computer programs;

[0097] The processor is used to implement the steps of the stress analysis method for an irregular wave impact construction platform according to Embodiment 1 when executing the computer program.

[0098] Furthermore, the processor includes at least:

[0099] Module 1 is used to acquire information about the deep-water construction platform and calculate working conditions.

[0100] The judgment module 2 is used to compare the platform water outlet height Δh obtained by the acquisition module 1 with the highest point a of the wave crest and the lowest point b of the wave trough to determine whether the conditions for the construction platform to be subjected to slamming under the action of waves are met.

[0101] The wave impact force coefficient calculation module 3 is used to obtain the judgment conditions of the judgment module 2, and based on the deep-water construction platform information and calculation condition information obtained by the acquisition module 1, calculates the wave force coefficients from S3 to S6 relative to the platform length L. B / L s Relative width B / L s Platform tilt angle α, platform relative water outlet height △h / H s and steep H s / L s The expression is used to calculate the wave impact force coefficient.

[0102] The wave impact force calculation module 4 is used to input the data obtained from the wave impact force coefficient calculation module 3 into the expression of the wave impact force on the platform in S7 to obtain the wave impact force on the platform.

[0103] Specifically, according to the irregular wave impact force analysis system of this embodiment, the wave impact force on the construction platform can be obtained quickly, and it has the advantages of short calculation time and high calculation efficiency.

[0104] It should be noted that the specific implementation of the stress analysis system for an irregular wave impact construction platform in this embodiment is similar to the specific implementation of the stress analysis method for an irregular wave impact construction platform in Embodiment 1 of this application. For details, please refer to the description in the method section, which will not be repeated here.

[0105] Example 3

[0106] A computer-readable storage medium storing a wave impact force calculation program for a construction platform, characterized in that, when the wave impact force calculation program for the construction platform is executed by a processor, it implements the steps of the irregular wave impact force analysis method for a construction platform according to Embodiment 1.

[0107] Specifically, the aforementioned computer-readable storage medium may be any combination of one or more computer-readable media. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in connection with an instruction execution system, apparatus, or device.

[0108] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0109] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0110] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming 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 it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0111] Test case

[0112] In the experiment, assuming the effective wave height of the incident wave is 0.08m and the effective period is 1.70s, the theoretical time history curve of the wavefront can be obtained, as follows: Figure 1 As shown, from Figure 5 As can be seen from this, the highest point of the wave crest is 0.0631m, and the lowest point of the wave trough is -0.0531m.

[0113] When the platform height Δh is lower than the height of the upper surface of the free surface wave, or higher than the height of the lower surface (i.e., -0.0531m < Δh < 0.0631m in this example), the wave will have a slamming effect on the lower surface of the platform. Dimensionless analysis is performed on each variable. For the platform's external dimensions, the relative length (L) of the platform is calculated. B / L S ), relative width (B / L) S The relationship between the forces acting on the platform and its characteristics under certain conditions. Figures 6-10 The figures show the relationship between the force and relative length of the platform when the platform height is 0.0m and 0.02m, respectively, under the action of irregular waves. Figure 11 and Figure 13 The figures show the relationship between the force and relative width of the platform when its height is 0.0m and 0.02m, respectively, under the action of irregular waves. The results show that the impact force on the bottom of the platform is related to the platform's relative length (L). B / L S ) and relative width (B / L) S All of them exhibit a relationship similar to a hyperbolic tangent function. After fitting, the expression for the wave impact force and the relative length of the platform was obtained.

[0114] Figure 14 and Figure 17 This describes the relationship between the relative height above water of different platforms and the wave impact force on the platforms under the action of irregular waves. Figure 18 and Figure 21 This paper presents the relationship between the inclination angle of different platforms and the slamming force under the action of irregular waves. The results show that the platform's relative height above water is exponentially related to the slamming force, while the platform inclination angle and the slamming force are cosine related. Through fitting, expressions for the wave slamming force in relation to the platform inclination angle and the platform's height above water are obtained.

[0115] Combining the above expressions, we finally obtain the expression for the wave impact force on the platform. The applicable range of this expression is as follows: incident effective wave height H S 0.04m-0.12m; Platform base area A = 1m² 2 ; steep wave H S / L S : 0.0093-0.0794; relative platform outlet height Δh / H S : 0-0.5; relative board width B / L S : 0.20-0.89; relative plate length L B / L S : 0.20-0.89; Inclination angle α: -4°-4°.

[0116] Converted to the prototype as follows: Incident effective wave height H S : 2m-6m; effective wave period T s 7-14s; Platform water outlet height △h: 0-6m; Platform inclination angle α: -4°-4°; Platform relative dimension length L B / L S and width B / L S All values ​​range from 0.20 to 0.89, which can basically cover any size range of construction platforms and the irregular wave hydrological conditions they encounter.

[0117] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A method for analyzing the stress on an irregular wave-impacted construction platform, characterized in that: The method includes the following steps: S1. Obtain information on the deep-water construction platform and calculate working conditions: The information on the deep-water construction platform includes the bottom area A of the platform, and the length L of the platform along and perpendicular to the wave propagation direction. B B, platform water outlet height Δh, and platform tilt angle α; calculation operating information includes the effective wave height H of the incident wave. S and effective period T S Given the water depth d at the platform's location, the effective wavelength L is calculated using the dispersion equation. S ; S2. By using the method of theoretical calculation or model test, obtain the time history curve of the wave surface theoretically, and obtain the highest point a of the wave crest and the lowest point b of the wave trough. When the platform water emergence height Δh is lower than the height of the highest point a of the wave crest and higher than the height of the lowest point b of the wave trough, that is, when b < Δh < a, it is determined that the construction platform will be subjected to slamming under the action of waves. At this time, execute S3 to S7; S3. Under the action of irregular waves, at different platform heights, the wave impact force on the bottom of the platform and the relative length L are respectively... B / L S Relative width B / L S The relationship curve shows that the wave impact force at the bottom of the platform is related to the platform's relative length L. B / L S and relative width B / L S All exhibit a relationship similar to a hyperbolic tangent function. After fitting, the wave impact force at the bottom of the platform is obtained as a function of the relative length L of the platform. B / L S and relative width B / L S Relationship; S4. Under the action of irregular waves, at different platform heights, the wave impact force on the bottom of the platform and the relative water height are respectively... h / H S The relationship curve between the tilt angle α and the wave impact force on the bottom of the platform and the platform's relative height above the water reveals that... h / H S The wave impact force on the platform bottom is exponentially related to the tilt angle α, which in turn is a cosine function. After fitting, the relationships between the wave impact force on the platform bottom and the platform tilt angle α and the platform's relative height above the water are obtained. h / H S Relationship; S5. Under the action of irregular waves, at different platform heights, the impact force and wave steepness H experienced at the bottom of the platform. S / L S The relationship curve shows that the impact force at the bottom of the platform is exponentially related to the wave steepness. After fitting, the relationship between the wave impact force and the wave steepness H is obtained. S / L S Relationship; S6. Based on the wave impact force and the relative length L of the platform, respectively... B / L S Relative width B / L S Platform tilt angle α, platform relative water outlet height h / H S and steep H S / L S From the expression, we obtain the expression for the wave impact force at the bottom of the platform; S7. Based on the expression for the wave impact force on the platform, and the incident effective wave height H of the prototype. S Effective period T S Platform water outlet height h, platform tilt angle α, platform length L B By combining the actual data of width B, the wave impact force experienced by the platform can be obtained. The actual data can cover the size range of the construction platform and the irregular wave hydrological conditions it suffers from.

2. The method for stress analysis of an irregular wave-impacted construction platform according to claim 1, characterized in that: The bottom of the platform is subjected to wave impact force and the platform's relative length L B / L S The relation is: in It is the hyperbolic tangent function.

3. The method for stress analysis of an irregular wave-impacted construction platform according to claim 2, characterized in that: The bottom of the platform is subjected to wave impact force and the platform's relative width B / L S The relation is: in, It is the hyperbolic tangent function.

4. The method for stress analysis of an irregular wave-impacted construction platform according to claim 3, characterized in that: The relational expression between the wave slamming force received by the bottom of the platform and the platform tilt angle α is; 。 5. The method for stress analysis of an irregular wave-impacted construction platform according to claim 4, characterized in that: The bottom of the platform is subjected to wave impact force and the platform's relative height above the water. h / H S The relation is: where e is the natural exponent.

6. The method for stress analysis of an irregular wave-impacted construction platform according to claim 5, characterized in that: The bottom of the platform is subjected to wave impact and steep incident wave H. S / L S The relation is: 。 7. The method for stress analysis of an irregular wave-impacted construction platform according to claim 6, characterized in that: The expression of the wave slamming force received by the bottom of the platform is: Where ρ is the density of water, g is the acceleration due to gravity, and A is the bottom area of ​​the construction platform.

8. A stress analysis system for an irregular wave impact construction platform, characterized in that, The system at least includes: A memory for storing a computer program; A processor for implementing the steps of a method for analyzing the force on an irregular wave slamming construction platform as described in any one of claims 1 to 7 when executing the computer program.

9. The stress analysis system for an irregular wave impact construction platform according to claim 8, characterized in that, The processor at least includes: An acquisition module (1) for acquiring deep-water construction platform information and calculation condition information; A judgment module (2) for judging whether the platform water emergence height Δh obtained by the acquisition module (1) meets the conditions for the construction platform to be subjected to slamming under the action of waves by comparing it with the highest point a of the wave crest and the lowest point b of the wave trough; The wave impact force coefficient calculation module (3) is used to obtain the judgment conditions of the judgment module (2), and based on the deep-water construction platform information and calculation condition information obtained by the acquisition module (1), calculates the wave force from S3 to S6 relative to the platform length L. B / L S Relative width B / L S Platform tilt angle α, platform relative water outlet height h / H S and steep H S / L S The expression is used to calculate the wave impact force coefficient. A wave slamming force calculation module (4) for substituting the data obtained by the wave slamming force coefficient calculation module (3) into the expression of the wave slamming force received by the platform in S7 to obtain the wave slamming force received by the platform.

10. A computer-readable storage medium storing a wave impact force calculation program for a construction platform, characterized in that, The wave slamming force calculation program of the construction platform implements the steps of a method for analyzing the force on an irregular wave slamming construction platform as described in any one of claims 1 to 7 when executed by the processor.

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