Design method, computer storage medium and equipment for marine portal bracket pipe rack beam

Abstract

This application relates to the field of marine engineering, specifically to a design method, computer storage medium, and device for marine portal frame tube beams. In the design method for marine portal frame tube beams of this application, a three-dimensional pipeline model is constructed on a three-dimensional modeling platform. Non-geometric parameters are input, and then the tube beam profile type is determined by calling functions from a physical property library and a tube beam profile parameter library. By comparing the two tube beam profile types, the smaller profile is selected as the final tube beam profile type. This application, relying on a three-dimensional modeling platform and the function-calling method, improves design efficiency and reduces the likelihood of parameter setting errors. By comparing with empirical design values ​​and selecting the smaller size as the final result, the design of the tube beam can better meet actual requirements, reducing the likelihood of the tube beam weight far exceeding the actual required weight, thus contributing to the achievement of lightweight ship design and construction goals.

Description

Technical Field

[0001] This application relates to the field of marine technology, and more specifically, to the design method, computer storage medium and equipment for marine portal frame tube beams. Background Technology

[0002] The descriptions in this section are provided only as background information in connection with this disclosure and may not constitute prior art.

[0003] Piping, acting as the lifeblood of a ship, is responsible for the flow and heat exchange of media such as water, oil, steam, and gas between and within ship systems. Ship piping is primarily connected to the hull structure via supports and hangers to secure the piping system. Among these, portal supports, such as... Figure 1 As shown, this type of support, also known as a gantry frame, includes a pipe beam 1 and a pipe column 2, with the pipe 3 installed on the pipe beam 1. This type of support has good mechanical properties and is widely used. For example, utility model patents with patent numbers CN207729050U, CN209130305U, and CN213685593U detail the structural characteristics of different types of portal seismic-resistant hangers.

[0004] Currently, there are no standards for the structural parameters of portal frames in the shipbuilding industry. Engineering practice often relies on empirical methods, determining portal frame parameters based on a single parameter (pipe diameter) or two parameters (pipe diameter and frame height). This leads to a conservative stress state for portal frames, resulting in the total weight of ship piping supports far exceeding the actual required weight. Furthermore, the trend towards larger ships necessitates piping systems that can handle longer transport distances. Conservative designs for pipe supports will significantly increase ship weight, making it difficult to meet lightweight construction requirements. Current portal frame layouts rely on manual, empirically-based parameter determination, resulting in low modeling efficiency and a high risk of parameter setting errors. Summary of the Invention

[0005] The purpose of this application is to provide a design method for marine portal frame tube beams, so as to make the dimensions of the support tube beams more reasonable, which is conducive to achieving the goal of lightweight ship design and construction.

[0006] Another objective of this application is to provide a computer storage medium and computer device for implementing the above-described method.

[0007] Firstly, a design method for marine portal frame tube beams is provided, including:

[0008] 1) Construct a 3D pipeline model on a 3D modeling platform, and input the non-geometric parameters of the 3D pipeline model. The non-geometric parameters of the 3D pipeline model include operating conditions, the flow medium inside the pipe, and the pipe material.

[0009] 2) Construct a function to call the physical property library of the calculation method. Given the non-geometric parameters of the three-dimensional pipeline model, the physical property parameters in the physical property library corresponding to the non-geometric parameters of the three-dimensional pipeline model can be retrieved through the function to call the physical property library of the calculation method.

[0010] A parameter library calling function for pipe rack beam profiles is constructed. Based on the correspondence between the geometric parameters and models of pipe rack beam profiles, the model of the pipe rack beam profile can be retrieved through the parameter library calling function when the geometric parameters of the pipe rack beam profile are known.

[0011] 3) Call the function from the physical property library of the calculation method to solve for the vertical and horizontal loads on the pipeline support;

[0012] 4) Based on the solved vertical and horizontal loads of the pipe support, determine the shear strength and bending strength that the pipe support beam needs to meet, and call the pipe support beam profile parameter library call function and the calculation method physical property library call function to determine the pipe support beam profile model that meets the shear strength and bending strength requirements;

[0013] 5) Construct and call the lookup function of the pipe rack beam experience design database. Given the geometric parameters of the three-dimensional pipeline model, retrieve the pipe rack beam profile model from the pipe rack beam experience design database using the lookup function.

[0014] 6) Based on the pipe rack beam profile model obtained by mathematical calculation in step 4) and the pipe rack beam profile model obtained by empirical design in step 5), select the smaller size of the two as the pipe rack beam profile model result.

[0015] In one possible implementation scheme, the design method of the marine portal frame tube beam further includes step 7): comparing the tube beam profile model in step 6) with the tube column profile model in the three-dimensional pipeline model, and selecting the larger size of the two as the final tube beam profile model result.

[0016] In one possible implementation scheme, in step 1), the thickness parameters and material parameters of the insulation material of the three-dimensional pipeline model are input, and in step 3), the parameters of the vertical load are calculated, including the weight of the insulation material.

[0017] In one possible implementation scheme, in step 3), the parameters for calculating the vertical load also include the weight of the pipe and the additional weight; the parameters for calculating the horizontal load include the horizontal thrust of the compensator, the horizontal thrust of the movable pipe support, and the unbalanced internal thrust within the pipe.

[0018] In one possible implementation, step 4) includes:

[0019] Step 41): Call the function from the physical property library of the calculation method and the function from the parameter library of the pipe rack beam to calculate the model of the pipe rack beam that meets the shear strength requirements;

[0020] Step 42): Call the physical property library function of the calculation method. Based on the solution in step 41), calculate the bending strength of the pipe rack beam profile calculated in step 41). If the bending strength of the pipe rack beam profile does not meet the requirements, increase the size of the pipe rack beam profile until the bending strength of the pipe rack beam profile meets the requirements. At this time, according to the size of the pipe rack beam profile, call the parameter library function of the pipe rack beam profile to obtain the model of the pipe rack beam profile, which is the model of the pipe rack beam profile that meets the requirements of shear strength and bending strength.

[0021] In one possible implementation scheme, the process of determining the type of the pipe rack beam profile in step 41) is as follows:

[0022]

[0023] In the formula, S: cross-sectional area of ​​the pipe rack beam;

[0024] α: Load factor;

[0025] T V The maximum shear force borne by the pipe rack beam in the vertical direction under vertical load;

[0026] T H The maximum shear force in the horizontal direction that a pipe rack beam bears under horizontal load;

[0027] n s Safety factor;

[0028] τ: Allowable shear stress of the pipe;

[0029] After solving, obtain the minimum cross-sectional area S of the pipe rack beam profile that meets the shear strength requirement. Then, call the function in the pipe rack beam profile parameter library to find and obtain the model of the pipe rack beam profile that meets the shear strength requirement.

[0030] In one possible implementation scheme, in step 42), when the pipe rack beam profile satisfies the inequality for solving the bending strength of the pipe rack beam, the bending strength of the pipe rack beam profile meets the requirement. The inequality for solving the bending strength of the pipe rack beam is:

[0031]

[0032] In the formula, α: load factor;

[0033] M V : Maximum bending moment of the pipe rack beam section under vertical load;

[0034] M H : Maximum bending moment of the pipe rack beam section under horizontal load;

[0035] r V 、r H MV 、M H The cross-sectional plastic development coefficient corresponding to the direction;

[0036] W nV 、W nH M V 、M H Section modulus corresponding to the direction;

[0037] n s Safety factor;

[0038] σ: Allowable stress of the pipe.

[0039] In one possible implementation, the profile model result of the pipe rack beam in step 6) is added to the non-geometric parameters of the three-dimensional pipeline model, and the result can be displayed together when the pipeline parameter definition is called.

[0040] In a second aspect, a computer storage medium is provided that stores a computer program, which, when executed by a processor, implements the design method for marine portal frame tube beams as described in any possible embodiment of the first aspect.

[0041] Thirdly, a computer device is provided, comprising:

[0042] Memory and processor

[0043] The memory stores a computer program, which, when executed by a processor, is the design method for marine portal frame tube beams as described in any possible implementation of the first aspect.

[0044] The design method for marine portal frame tube beams in this application has the following advantages: In this method, a three-dimensional pipeline model is constructed on a three-dimensional modeling platform. Non-geometric parameters are input, and then the tube beam profile model is determined by calling functions from the physical property library and the tube beam profile parameter library. The tube beam profile model is also found by using a function from the tube beam empirical design database. By comparing the two tube beam profile models, the smaller profile is selected as the final tube beam profile model. Compared to the traditional method of relying on manual experience-based design, this application, by using a three-dimensional modeling platform and establishing calling functions, improves design efficiency and reduces the likelihood of parameter setting errors. By comparing with empirical design values ​​and selecting the smaller size as the final result, the design of the tube beam can better meet actual requirements, reducing the likelihood of the tube beam weight far exceeding the actual required weight, thus contributing to the achievement of lightweight ship design and construction goals. Attached Figure Description

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 A schematic diagram of a marine portal frame tube beam;

[0047] Figure 2 This is a flowchart illustrating a design method for a marine portal frame tube beam according to an embodiment of this application. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0050] According to the first aspect of this application, a design method for marine portal frame tube beams is provided. Figure 2 This is a flowchart illustrating the design method of a marine portal frame tube beam according to an embodiment of this application.

[0051] A design method for a marine portal frame tube beam includes the following steps:

[0052] 1) Construct a 3D pipeline model on a 3D modeling platform, and input the non-geometric parameters of the 3D pipeline model. The non-geometric parameters of the 3D pipeline model include operating conditions, the flow medium inside the pipe, and the pipe material.

[0053] 2) Construct a function to call the physical property library of the calculation method. Given the non-geometric parameters of the three-dimensional pipeline model, the physical property parameters in the physical property library corresponding to the non-geometric parameters of the three-dimensional pipeline model can be retrieved through the function to call the physical property library of the calculation method.

[0054] In one embodiment, the non-geometric parameters of the three-dimensional pipeline model include operating conditions, the fluid medium flowing inside the pipe, and the pipe material. The corresponding physical property libraries include a physical property library for operating conditions, a physical property library for fluid medium, and a physical property library for pipe material.

[0055] A parameter library calling function for pipe rack beam profiles is constructed. Based on the correspondence between the geometric parameters and models of pipe rack beam profiles, the model of the pipe rack beam profile can be retrieved through the parameter library calling function when the geometric parameters of the pipe rack beam profile are known. In one embodiment, the pipe rack beam profile is any one of angle steel, H-beam, I-beam and channel steel.

[0056] 3) Call the function from the physical property library of the calculation method to solve for the vertical and horizontal loads on the pipeline support;

[0057] 4) Based on the solved vertical and horizontal loads of the pipe support, determine the shear strength and bending strength that the pipe support beam needs to meet, and call the pipe support beam profile parameter library call function and the calculation method physical property library call function to determine the pipe support beam profile model that meets the shear strength and bending strength requirements;

[0058] 5) Construct and call the lookup function of the pipe rack beam experience design database. Given the geometric parameters of the three-dimensional pipeline model, retrieve the pipe rack beam profile model from the pipe rack beam experience design database using the lookup function.

[0059] 6) Based on the pipe rack beam profile model obtained by mathematical calculation in step 4) and the pipe rack beam profile model obtained by empirical design in step 5), select the smaller size of the two as the pipe rack beam profile model result.

[0060] In this application, the constructed physical property library includes non-geometric parameters and physical property parameters of the 3D pipeline model; the constructed pipe rack beam profile parameter library includes geometric parameters and models of pipe rack beam profiles; and the constructed pipe rack beam empirical design database includes 3D pipeline model parameters and pipe rack beam profile models, where the 3D pipeline model parameters are geometric parameters. It should be noted that different databases cover different types of data. Comparatively, the physical property library corresponding to the physical property library call function of the calculation method contains a wider variety of data.

[0061] The data in each database includes both input condition data for calling functions and output result data of the calling functions based on the input conditions. For example, the physical property library contains non-geometric parameter data of three-dimensional pipeline models, as well as physical property parameters obtained by calling functions from the physical property library through calculation methods.

[0062] In the design method of the marine portal frame tube beam of this application, a three-dimensional pipeline model is constructed on a three-dimensional modeling platform, and non-geometric parameters are input. Then, by constructing a physical property library call function and a tube beam profile parameter library call function, the model of the tube beam profile is solved. The model of the tube beam profile is also found by constructing an empirical design database lookup function. By comparing the models of the two tube beam profiles, the tube beam profile with the smaller size is selected as the final tube beam profile model. Compared with the traditional method of relying on manual empirical design, this application improves the design efficiency and reduces the likelihood of parameter setting errors by relying on a three-dimensional modeling platform and establishing call functions. By comparing with empirical design values ​​and selecting the smaller size as the final result, the design of the tube beam can better meet the actual requirements, reduce the situation where the weight of the tube beam far exceeds the actual required weight, and help achieve the goal of lightweight ship design and construction.

[0063] In one embodiment, given the cross-sectional area of ​​the pipe rack beam profile, the model of the pipe rack beam profile can be retrieved by calling a function from the pipe rack beam profile parameter library.

[0064] In one embodiment, in step 5), given the pipe diameter and support height of the three-dimensional pipeline model in step 1), the pipe rack beam profile model is retrieved from the pipe rack beam empirical design database using a lookup function.

[0065] In one embodiment, the design method for marine portal frame tube beams further includes step 7): comparing the tube beam profile model from step 6) with the tube column profile model in the three-dimensional pipeline model, and selecting the larger of the two as the final tube beam profile model. Using the same model for both the tube column and tube beam profiles facilitates the construction of the entire ship and improves the overall construction efficiency.

[0066] In one embodiment, the non-geometric parameters of the three-dimensional pipeline model include insulation material thickness parameters and insulation material parameters. In step 1), the insulation material thickness parameters and insulation material parameters of the three-dimensional pipeline model are input. The physical property library includes a physical property library for insulation material thickness and a physical property library for insulation material. In step 3), the parameters for calculating the vertical load include the weight of the insulation material. By adding the insulation material thickness and insulation material parameters, the calculated vertical load result can be closer to the actual value.

[0067] In one embodiment, step 3) further includes calculating the parameters for the vertical load, including the weight of the pipe and the additional weight. The calculation process for each part's weight is as follows:

[0068] G G =gρ G πδ G (D-δ G )L

[0069] GB =gρ B πδ B (D+δ B )L

[0070]

[0071] In the formula, G G Pipe weight; ρ G Pipe density;

[0072] G B Insulation weight; ρ B Density of insulation material;

[0073] G F Additional weight; ρ F : Density of the medium flowing inside the pipe;

[0074] g: acceleration due to gravity;

[0075] D: Pipe outer diameter; L: Pipe length;

[0076] δ G Pipeline wall thickness; δ B : Insulation material thickness.

[0077] The parameters for calculating horizontal loads include the horizontal thrust of the movable pipe support, the horizontal thrust of the compensator, and the unbalanced internal thrust within the pipe. This embodiment only demonstrates the solution process using the horizontal thrust of the movable pipe support and the horizontal thrust of the L-shaped natural compensation as examples:

[0078] F D =μG

[0079]

[0080] In the formula, F D : Horizontal thrust of the movable tube rack; F L L-shaped natural compensation horizontal thrust;

[0081] G: Vertical load; μ: Coefficient of friction; Δl: Thermal elongation of the pipe arm;

[0082] l b E: Naturally compensated short arm length; I: Pipeline elastic modulus;

[0083] K L : The ratio of the long and short arms of the L-shaped natural compensation.

[0084] In one embodiment, step 4) includes:

[0085] Step 41): Call the function from the physical property library of the calculation method and the function from the parameter library of the pipe rack beam to calculate the model of the pipe rack beam that meets the shear strength requirements;

[0086] Step 42): Call the physical property library function of the calculation method. Based on the solution in step 41), calculate the bending strength of the pipe rack beam profile calculated in step 41). If the bending strength of the pipe rack beam profile does not meet the requirements, increase the size of the pipe rack beam profile until the bending strength of the pipe rack beam profile meets the requirements. At this time, according to the size of the pipe rack beam profile, call the parameter library function of the pipe rack beam profile to obtain the model of the pipe rack beam profile, which is the model of the pipe rack beam profile that meets the requirements of shear strength and bending strength.

[0087] In one embodiment, the process of determining the model of the pipe rack beam profile in step 41) is as follows:

[0088]

[0089] In the formula, S: cross-sectional area of ​​the pipe rack beam;

[0090] α: Load factor, reference range: 1.2-2.0;

[0091] T V The maximum shear force borne by the pipe rack beam in the vertical direction under vertical load;

[0092] T H The maximum shear force in the horizontal direction that a pipe rack beam bears under horizontal load;

[0093] n s Safety factor, reference range: 0.5-0.9;

[0094] τ: Allowable shear stress of the pipe;

[0095] Among them, the load factor α and the safety factor n s An input window is provided, allowing users to set the parameters according to their design requirements. After solving, the minimum cross-sectional area S of the pipe rack beam profile that meets the shear strength requirement is obtained. The function of calling the pipe rack beam profile parameter library is then used to find and obtain the model of the pipe rack beam profile that meets the shear strength requirement.

[0096] In one embodiment, in step 42), when the pipe rack beam profile satisfies the inequality for solving the bending strength of the pipe rack beam, the bending strength of the pipe rack beam profile meets the requirements. The inequality for solving the bending strength of the pipe rack beam is:

[0097]

[0098] In the formula, α: load factor, reference range: 1.2-2.0;

[0099] MV : Maximum bending moment of the pipe rack beam section under vertical load;

[0100] M H : Maximum bending moment of the pipe rack beam section under horizontal load;

[0101] r V 、r H M V 、M H The plastic development coefficient of the cross section corresponding to the direction, with a reference range of 1.0-1.1;

[0102] W nV 、W nH M V 、M H Section modulus corresponding to the direction;

[0103] n s Safety factor, reference range: 0.5-0.9;

[0104] σ: Allowable stress of the pipe;

[0105] Among them, the load factor α and the safety factor n s An input window is provided, which users can customize according to their design requirements.

[0106] In one embodiment, the profile model result of the pipe rack beam in step 6) is added to the non-geometric parameters of the three-dimensional pipeline model, and the result can be displayed together when the pipeline parameter definition is called.

[0107] Compared with existing technologies, the method of this application analyzes the design method of pipe rack beams from the perspective of engineering mechanics and mathematics before modeling the pipe racks of newly built ships. It considers the influence of multiple parameters such as pipe geometry, internal medium, pipe material and insulation material on the pipe rack beams. At the same time, the design method of this application makes full use of the computer-aided design function of automation. For large ocean-going transport ships, it can improve the modeling efficiency of ship pipe system and shorten the ship construction cycle while ensuring the stability of ship pipes.

[0108] According to a second aspect of this application, a computer storage medium is also provided, which stores a computer program that, when executed by a processor, implements the design method for marine portal frame tube beams described in any embodiment of the first aspect. Preferably, the storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disk, USB flash drive, memory card, or optical disk.

[0109] According to a third aspect of this application, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, implements the design method for marine portal frame tube beams as described in any embodiment of the first aspect.

[0110] The memory includes various media capable of storing program code, such as ROM, RAM, magnetic disks, USB flash drives, memory cards, or optical discs. The processor is connected to the memory and executes the computer programs stored in the memory.

[0111] Preferably, the processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0112] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A design method for a marine portal frame tube beam, characterized in that, Includes the following steps: 1) Construct a 3D pipeline model on a 3D modeling platform, and input the non-geometric parameters of the 3D pipeline model. The non-geometric parameters of the 3D pipeline model include operating conditions, the flow medium inside the pipe, and the pipe material. 2) Construct a function to call the physical property library of the calculation method. Given the non-geometric parameters of the three-dimensional pipeline model, the physical property parameters in the physical property library corresponding to the non-geometric parameters of the three-dimensional pipeline model can be retrieved through the function to call the physical property library of the calculation method. Construct a parameter library calling function for pipe rack beam profiles. Based on the correspondence between the geometric parameters and models of pipe rack beam profiles, the model of the pipe rack beam profile can be retrieved through the parameter library calling function when the geometric parameters of the pipe rack beam profile are known. 3) Call the function from the physical property library of the calculation method to solve for the vertical and horizontal loads on the pipeline support; 4) Based on the solved vertical and horizontal loads of the pipe support, determine the shear strength and bending strength that the pipe support beam needs to meet, and call the pipe support beam profile parameter library call function and the calculation method physical property library call function to determine the pipe support beam profile model that meets the shear strength and bending strength requirements; 5) Construct and call the lookup function of the pipe rack beam experience design database. Given the geometric parameters of the three-dimensional pipeline model, retrieve the pipe rack beam profile model from the pipe rack beam experience design database using the lookup function. 6) Based on the pipe rack beam profile model obtained by mathematical calculation in step 4) and the pipe rack beam profile model obtained by empirical design in step 5), select the smaller size of the two as the pipe rack beam profile model result.

2. The design method for marine portal frame tube beams according to claim 1, characterized in that, The design method for marine portal frame tube beams also includes step 7): comparing the tube beam profile model in step 6) with the tube column profile model in the three-dimensional pipeline model, and selecting the larger size of the two as the final tube beam profile model result.

3. The design method for marine portal frame tube beams according to claim 1, characterized in that, In step 1), input the insulation material thickness parameters and insulation material parameters of the 3D pipeline model. In step 3), calculate the parameters of the vertical load, including the weight of the insulation material.

4. The design method for marine portal frame tube beams according to claim 3, characterized in that, In step 3), the parameters for calculating the vertical load also include the weight of the pipe and the additional weight; the parameters for calculating the horizontal load include the horizontal thrust of the movable pipe support, the horizontal thrust of the compensator, and the unbalanced internal thrust within the pipe.

5. The design method for marine portal frame tube beams according to claim 1, characterized in that, Step 4) includes: Step 41): Call the function from the physical property library of the calculation method and the function from the parameter library of the pipe rack beam to calculate the model of the pipe rack beam that meets the shear strength requirements; Step 42): Call the physical property library function of the calculation method. Based on the solution in step 41), calculate the bending strength of the pipe rack beam profile calculated in step 41). If the bending strength of the pipe rack beam profile does not meet the requirements, increase the size of the pipe rack beam profile until the bending strength of the pipe rack beam profile meets the requirements. At this time, according to the size of the pipe rack beam profile, call the parameter library function of the pipe rack beam profile to obtain the model of the pipe rack beam profile, which is the model of the pipe rack beam profile that meets the requirements of shear strength and bending strength.

6. The design method for marine portal frame tube beams according to claim 5, characterized in that, Step 41) The process of determining the type of the tube frame beam profile is as follows: In the formula, S: cross-sectional area of ​​the pipe rack beam; α: Load factor; T V The maximum shear force borne by the pipe rack beam in the vertical direction under vertical load; T H The maximum shear force in the horizontal direction that a pipe rack beam bears under horizontal load; n s Safety factor; τ: Allowable shear stress of the pipe; After solving, obtain the minimum cross-sectional area S of the pipe rack beam profile that meets the shear strength requirement. Then, call the function in the pipe rack beam profile parameter library to find and obtain the model of the pipe rack beam profile that meets the shear strength requirement.

7. The design method for marine portal frame tube beams according to claim 6, characterized in that, In step 42), when the pipe rack beam profile satisfies the inequality for solving the bending strength of the pipe rack beam, the bending strength of the pipe rack beam profile meets the requirements. The inequality for solving the bending strength of the pipe rack beam is: In the formula, α: load factor; M V : Maximum bending moment of the pipe rack beam section under vertical load; M H : Maximum bending moment of the pipe rack beam section under horizontal load; r V r H M V M H The cross-sectional plastic development coefficient corresponding to the direction; W nV W nH M V M H Section modulus corresponding to the direction; n s Safety factor; σ: Allowable stress of the pipe.

8. The design method for marine portal frame tube beams according to claim 1, characterized in that, Add the profile model result of the pipe rack beam in step 6) to the non-geometric parameters of the 3D pipeline model. When the pipeline parameter definition is called, this result can be displayed together.

9. A computer storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the design method for marine portal frame tube beams as described in any one of claims 1 to 8.

10. A computer device, characterized in that, include: A memory and a processor, wherein the memory stores a computer program that, when executed by the processor, implements the design method for marine portal frame tube beams as described in any one of claims 1 to 8.

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