Smart3D-based parameterized modeling method for binding bridge box column

Abstract

The application provides a Smart3D-based parameterized modeling method for a tied bridge box column, and the method comprises the following steps: taking the centroid position of the uppermost horizontal plate of the box column as a reference point to position the box column; combining basic parameters to identify the upper deck boundary and take the upper deck boundary as the boundary of the box column; selecting a box column style, creating the plates of the box column according to the size and position parameter input of the plates in the interface; and taking the plates as the basis, creating the steps and handrails of the box column according to the size and position parameter input of the steps and handrails in the interface. The method can break away from the limitations of traditional manual modeling, greatly reduce the labor and time input, reduce human operation errors, and improve the model accuracy. The method not only can effectively drive the modeling of complex connection nodes, realize the parameterized creation of the steps and handrails in the box column, but also can simplify the modeling process, enhance the model universality, reduce manual adjustment work, and improve the efficiency and accuracy of the tied bridge box column modeling.

Description

Technical Field

[0001] This invention relates to the field of secondary technology of digital design software for ships, and in particular to a parametric modeling method for lashed bridge box piers based on Smart3D, its application, electronic equipment, and computer-readable storage medium, which is applicable to the rapid design and modeling of lashed bridge box piers for various types of container ships. Background Technology

[0002] In the field of shipbuilding and marine engineering, lashed bridge piers are the core load-bearing components of container ships, bearing the vertical and lateral inertial loads of the containers and directly affecting the safety of ship navigation. As container ships develop towards larger and ultra-larger sizes (single ship container capacity has exceeded 24,000 TEU), the structural forms of lashed bridge piers have become increasingly complex, and their number has increased significantly, placing extremely high demands on modeling efficiency and accuracy.

[0003] Existing ballast bridge box girder modeling techniques have the following fundamental flaws: 1. Traditional manual modeling is extremely inefficient and has a high error rate. Designers need to draw the outline point by point, create the panels block by block, and add auxiliary components one by one in 3D software. Modeling a single column takes about 2-4 hours, and modeling dozens of box columns for the entire ship can take several days. At the same time, manual operation is prone to problems such as coordinate deviation, dimensional errors, and omission of components, resulting in a large amount of modification work later.

[0004] 2. Existing parameterization methods lack sufficient parameterization level. Parametric methods based on software such as CATIA can only generate the main structure of box columns, and cannot drive the parametric creation of complex connection nodes, steps, handrails and other auxiliary components. The generated model still requires a lot of manual adjustment of the position and size of auxiliary components, resulting in limited overall efficiency improvement and difficulty in ensuring the consistency of auxiliary components between different box columns.

[0005] 3. Lack of unified design specifications Existing methods do not incorporate standard parameters from ship design specifications (such as step spacing and handrail diameter) into the modeling process, requiring designers to repeatedly consult the specifications, which can easily lead to design errors that do not conform to the specifications. Summary of the Invention

[0006] To address the technical problems existing in the prior art, the present invention provides the following technical solution: On the one hand, a parametric modeling method for ballast bridge box columns based on Smart3D is provided, including the following steps: S1 Reference point positioning: The centroid of the uppermost horizontal plate of the box column is used as the three-dimensional spatial positioning reference point; S2 Boundary Recognition: Combining the reference point coordinates and the upper deck height parameter, the structural area where the box column is located is filtered by range, and the upper deck is identified as the lower boundary of the box column; S3 Box Column Main Panel Structure Creation: Select the box column style, input the panel's size and position parameters, and generate the outline of each panel and create the panel structure based on Smart3D's Sketch3D method; S4 Parametric Creation of Attached Components: Based on the existing slab structure, input the size and position parameters of the steps and handrails, generate the outlines of the steps and handrails based on the Sketch3D method, and call the corresponding interface to create the components.

[0007] Preferably, in step S1, the upper surface of the uppermost horizontal plate is at the same height as the top of the hatch cover, and its shape is a rounded rectangle. Its centroid coordinates serve as the sole spatial reference for modeling all subsequent components.

[0008] Preferably, in step S2, the range filtering is performed by filtering the range based on the X position of the reference point and the height parameter of the upper deck, locating the structural area where the box column is located, and finding the upper deck as the boundary of the box column.

[0009] Preferably, in step S3, the box column style is selected through a drop-down box, and different box column styles are associated with independent size parameter input interfaces and position parameter input interfaces; the size parameters include the length, width, fillet radius, plate thickness, and material properties of the plate, and the position parameters include the offset relative to the reference point, the tilt angle, and rib information.

[0010] Preferably, in step S3, the specific process of creating the board based on the Sketch3D method is as follows: The base plane definition of the plate is determined based on the plate's position parameters; By combining the upper deck boundary constraints and the plate's dimensional parameters, calculate the 3D coordinates (Sketch Points) of all key nodes of the plate outline and store them in a collection object; Use Line Feature and Bend Feature to connect the nodes in the set in sequence to generate a closed plate outline; Call the Create Slab interface of Smart3D, pass in the plate outline and attribute information, and generate the plate structure.

[0011] Preferably, in step S4, the parameter input interface for the steps and handrails is associated with the selected box column style, and the default values ​​of the size parameters conform to the ship design specifications.

[0012] Preferably, in step S4, the specific process of creating the steps and handrails is as follows: Based on the position parameters of the steps and handrails, and taking the surface of the corresponding slab structure as a reference, calculate the coordinates of the axial nodes of each component; Use the Line Feature to connect nodes and generate the axial outline of the steps and handrails; Call the Create Member System interface of Smart3D, pass in the axis outline, component section and material properties, and generate the step and handrail structures respectively.

[0013] Preferably, after all parameters are entered, the tool automatically generates all components in batches according to the order of "plate structure → steps → handrail".

[0014] Preferably, the method is based on secondary development of Smart3D software, and the tool is launched through Custom Commands. The generated model is fully compatible with the original Smart3D model and supports subsequent structural analysis and drawing production.

[0015] On the other hand, the application of the Smart3D-based parametric modeling method for lashed bridge box columns in the modeling of container ship lashed bridge box columns is provided. It is applicable to all types of container ship lashed bridge box column structures, including container ships of different tonnages and different hatch arrangements.

[0016] On the other hand, an electronic device is provided, comprising: a processor; and a memory storing computer-readable instructions, which, when executed by the processor, implement the method described above.

[0017] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction is stored therein, the at least one instruction being loaded and executed by a processor to implement the above method.

[0018] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: 1. Modeling efficiency is greatly improved. The modeling time for a single box column has been reduced from the traditional 2-4 hours to 5-10 minutes, and the modeling time for the entire ship's box columns has been reduced from several days to a few hours, resulting in an overall efficiency improvement of over 95%.

[0019] 2. The model accuracy has been significantly improved. The entire process is parameter-driven, eliminating and reducing human error, improving model accuracy, and reducing the workload of later modifications by more than 90%.

[0020] 3. Achieve full component parameterization Compared to traditional software such as CATIA, it can not only effectively drive the modeling of complex connection nodes and realize the parametric creation of step handrails in box columns, but also simplify the modeling process, enhance the versatility of models, reduce manual adjustment work, and improve the ease of operation.

[0021] 4. Design specifications are automatically executed. All standard parameters are built into the tool, eliminating the need for designers to consult specifications and ensuring that the model is 100% compliant with industry design standards.

[0022] 5. High versatility It supports all commonly used box column styles and is suitable for container ships of different tonnages and hatch layouts. It can be promoted and applied in major ship design institutes.

[0023] In summary, this invention significantly improves the efficiency and accuracy of lashed bridge box column modeling, and can better meet the stringent requirements of the increasing size and specialization of ships for their structural performance. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is the Smart3D parameter input main interface provided in this embodiment of the invention; Figure 2 This is the board size parameter input interface provided in the embodiments of the present invention; Figure 3 This is the plate position parameter input interface provided in the embodiments of the present invention; Figure 4 This is the input interface for the step handrail size parameters provided in the embodiments of the present invention; Figure 5 This is the step handrail position parameter input interface provided in the embodiments of the present invention; Figure 6 This is a schematic diagram of the box column model provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the method flow steps provided in the embodiments of the present invention. Detailed Implementation

[0026] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0027] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0028] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning. Similarly, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning.

[0029] In this embodiment of the invention, sometimes a subscript such as W1 may be mistakenly written as a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0030] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0031] This invention is based on the Smart3D ship design platform and involves secondary development. Through a fully parametric-driven process of "baseline positioning - boundary recognition - main body creation - auxiliary generation," it achieves one-click rapid modeling of lashed bridge box piers. All design specification parameters are built into the tool to ensure that the model conforms to industry standards.

[0032] like Figure 7 The flowchart shown illustrates the steps involved in this method, which include the following: Step 1: Locating the reference points of the box column The centroid of the top horizontal plate (POS-01 plate) of the box column is used as the three-dimensional spatial positioning reference point for positioning the box column. The design of this plate is unique: the box column design has a typical feature that its upper surface must be at the same height as the top of the hatch cover, and its shape is a standard rounded rectangle. It is the component with the most defined position and the highest precision requirement in the entire box column. Therefore, the centroid of this plate is selected as the three-dimensional spatial positioning reference point to provide a spatial positioning reference for the modeling of all subsequent components.

[0033] By inputting the X, Y, and Z coordinates of the reference plate's centroid in the main tool interface, where the Z coordinate equals the height of the hatch cover's top, these coordinates will serve as the sole spatial reference for modeling all subsequent plates, steps, and handrails. This conforms to general ship design standards, ensuring a unique and clear reference point selection, thus avoiding overall positioning deviations caused by inconsistent references. All components are generated based on the same reference point, guaranteeing the geometric consistency of the entire box column structure; subsequent modifications to the reference point coordinates will allow for synchronized updates across the entire box column.

[0034] Step 2: Automatic Recognition of Upper Deck Boundary Based on the X position of the benchmark point and the height parameter of the upper deck, the range is filtered to locate the structural area where the box column is located, and the upper deck is identified as the boundary of the box column.

[0035] Specifically: Based on the X coordinate of the reference point and the input upper deck height parameter, the range filtering function is used: Filter all structural panels whose Z-coordinate is equal to the height of the upper deck; The plate frame whose X coordinate matches the reference point's X coordinate in the filtering results is the upper deck where the box column is located. The upper surface of the upper deck is used as the lower boundary constraint for the box columns, and the lower ends of all box column panels are automatically aligned with the upper deck surface. This eliminates the need for manual searching and selection of the upper deck, avoiding errors caused by manual selection; and automatically establishes the positional relationship between the box columns and the hull structure, ensuring the accuracy of the box column installation position.

[0036] Step 3: Parametric creation of the box column main plate structure Select the column style, input the dimensions and position parameters of the panel in the interface, and create the panel for the column. The process includes the following steps: 1. Selection of Box Column Style Select the box column style (such as Style1, Style2, Style3, etc.) from the drop-down menu on the main interface. Different styles correspond to different panel compositions and connection methods. The tool includes templates for all commonly used box column styles in the shipbuilding industry.

[0037] 2. Board parameter input The parameters of the main body plate structure of the box column are divided into two parts: dimensions and location, such as... Figure 2 , Figure 3 The images show the parameter input interfaces that pop up after clicking the size and position parameter buttons. Depending on the selected box column style, clicking the button will redirect to the specific size and position parameter input interface associated with that style. The size parameter input interface includes the plate's dimensions and attribute parameters, while the position parameter input interface includes the inclined plate position, inclined plate rib position, and core size parameters.

[0038] Detailed operation steps: Clicking the "Plate Size Parameters" and "Plate Position Parameters" buttons will redirect the system to the dedicated parameter input interface corresponding to the selected column style. Size parameter interface: Input the plate length L1, width L2, corner radius R1, plate thickness, material grade (default Q235A), strength grade and other attribute parameters; Position parameter interface: The position of the inclined plate, such as the stern, the model of the inclined plate rib, and the position parameters of the inclined plate.

[0039] 3. Piece Creation Based on Sketch3D The board is created using the Sketch3D method in Smart3D. The key node coordinates that can depict the shape of the board are accurately located in three-dimensional space, and then these nodes are connected in sequence with the corresponding line types to generate the outline shape of the board.

[0040] The process of creating a slab by calling Smart3D's native Sketch3D methods is as follows: Define the base plane PlaneDefinition of the board based on the board's position parameters; By combining the upper deck boundary constraints and the plate's dimensional parameters, the three-dimensional coordinates (SketchPoint) of all key nodes of the plate outline are accurately calculated and stored in a Collection object. Based on the outline shape of the board, the nodes in the set are connected sequentially using LineFeature and BendFeature to generate a closed board outline; Call the Create Slab interface of Smart3D, pass in information such as plate outline, plate thickness, and material properties, and the plate structure will be automatically generated.

[0041] Different box column styles correspond to independent parameter interfaces, avoiding interference from irrelevant parameters and making operation simpler; the plates created using the Smart3D native method are fully compatible with the platform, supporting subsequent structural strength analysis, weight and center of gravity calculation, and production drawings; modeling efficiency is improved by more than 10 times, and the creation time of a single plate is shortened from 10 minutes to less than 1 minute.

[0042] Step 4: Parametric creation of steps and handrails This step mainly uses the board as a base, and creates the steps and handrails of the box column by inputting the size and position parameters of the steps and handrails in the interface.

[0043] 1. Input parameters for steps and handrails The parameter input for steps and handrails is similar to that for slabs. Influenced by the style of the box columns, it is divided into two parts: size and position. Clicking the button will redirect to a specific associated interface, such as... Figure 4 , Figure 5 As shown.

[0044] Specifically, click the "Step Handrail Dimensions" and "Step Handrail Position Parameters" buttons to enter the corresponding parameter interface. All default parameters comply with the specifications in the "Ship Design Manual". Default size parameters: The handrail is made of round steel with a diameter of 19mm (grade YG19), the steps are made of square steel with a diameter of 22×22mm (grade FG22), and the step height is fixed at 50mm; Default position parameters: Step spacing is fixed at 300mm, and the horizontal distance between the top of the handrail and the top surface of the uppermost horizontal plate is 150mm. The "Step and Handrail Alignment" option is checked by default, and the steps are aligned with the handrail by default. If there is any offset, the specific offset distance must be entered. If adjustment is needed, the corresponding parameter value can be modified directly; if "Step and Handrail Alignment" is canceled, the offset distance D4 of the step relative to the handrail must be entered.

[0045] 2. Step and Handrail Creation The steps and handrails were created based on a board, also using the Sketch3D method. The steps were made of multiple square steel pieces joined together.

[0046] Based on the existing box-column structure, it is also created using the Sketch3D method: Based on the position parameters of the steps and handrails, and taking the surface of the corresponding board as a reference, calculate the coordinates of the axis nodes of each component; Use LineFeature to connect nodes to generate the axial outline of the steps and handrails; Call the Smart3D CreateMemberSystem interface, pass in information such as axis contour, cross-sectional dimensions, and material properties, and generate the step and handrail structures respectively.

[0047] Therefore, the above method is the first to achieve fully parametric creation of steps and handrails for ligature bridge box columns, filling the gap in existing technology; the built-in standardized parameters avoid design errors that do not conform to the standards and ensure the standardization of auxiliary components between different box columns; the auxiliary components are automatically associated with the main plate structure, and when the size of the main plate is modified, the steps and handrails will automatically adjust their position and length.

[0048] Example 1 This embodiment uses the Style1 type lashing bridge column of a container ship as an example to explain in detail the specific implementation process of this method: 1. Tool Launch: In Smart3D software, launch the parametric modeling tool for the ballast bridge box column using the Custom Commands feature. Figure 1 The main interface shown.

[0049] 2. Basic parameter input: Select "Test" as the folder where you want to store the model; The top height of the input hatch cover is 29950 mm. Enter the upper deck height: 27200mm.

[0050] 3. Benchmark point location and column selection: Input the centroid coordinates of the reference plate (POS-01): X=99500mm, Y=24912mm, Z=29950mm; Box column style selection: Style1.

[0051] 4. Board parameter input: like Figure 2 The input interface diagram shown indicates that when the user clicks the "Board Size Parameters" button, they can enter the interface and input the following parameters for the POS-01 board: L1=634mm, L2=240mm, L3=25mm, board thickness 25mm, material Steel, grade Q235A; other board parameters should be entered according to design requirements.

[0052] Click the "Plate Position Parameters" button to enter the interface shown in Figure 3. Enter: sloping plate rib position FR124, D1=461.5mm, D2=15mm, D3=25mm.

[0053] 5. Step handrail parameter input: Click the "Step and Handrail Size Parameters" button to enter the interface shown in Figure 4. Use the default values: handrail diameter 19mm, step 22×22mm square steel, step height 50mm.

[0054] Click the "Step and Handrail Position Parameters" button to enter the interface shown in Figure 5. Use the default values: step spacing 300mm, handrail distance from top panel 150mm, and check "Step and handrail centering".

[0055] 6. Model Generation: Click the "Output" button on the main interface. The tool will automatically parse all parameters and generate all components in batches according to the order of "slab structure → steps → handrail". The generated box column model is shown in Figure 6, which includes all slabs, steps, and handrails. The structure is complete and the dimensions are accurate.

[0056] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0057] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0058] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0059] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0060] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0061] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0062] In the several embodiments provided by this invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0063] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0064] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0065] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A parametric modeling method for ballast bridge box piers based on Smart3D, characterized in that, Includes the following steps: S1 Reference point positioning: The centroid of the uppermost horizontal plate of the box column is used as the three-dimensional spatial positioning reference point; S2 Boundary Recognition: Combining the reference point coordinates and the upper deck height parameter, the structural area where the box column is located is filtered by range, and the upper deck is identified as the lower boundary of the box column; S3 Box Column Main Panel Structure Creation: Select the box column style, input the panel's size and position parameters, and generate the outline of each panel and create the panel structure based on Smart3D's Sketch3D method; S4 Parametric Creation of Attached Components: Based on the existing slab structure, input the size and position parameters of the steps and handrails, generate the outlines of the steps and handrails based on the Sketch3D method, and call the corresponding interface to create the components.

2. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S1, the upper surface of the uppermost horizontal plate is at the same height as the top of the hatch cover and is shaped as a rounded rectangle. Its centroid coordinates serve as the sole spatial reference for modeling all subsequent components.

3. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S2, the range filtering is performed by filtering the range based on the X position of the reference point and the height parameter of the upper deck, locating the structural area where the box column is located, and finding the upper deck as the boundary of the box column.

4. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S3, the box column style is selected through a drop-down box. Different box column styles are associated with independent dimension parameter input interfaces and position parameter input interfaces. The dimension parameters include the length, width, fillet radius, plate thickness, and material properties of the plate. The position parameters include the offset relative to the reference point, tilt angle, and rib information.

5. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S3, the specific process of creating the board based on the Sketch3D method is as follows: The base plane definition of the plate is determined based on the plate's position parameters; Combining the upper deck boundary constraints and the plate's dimensional parameters, calculate the 3D coordinates (SketchPoint) of all key nodes of the plate outline and store them in a collection object; Use Line Feature and Bend Feature to connect the nodes in the set in sequence to generate a closed plate outline; Call the Create Slab interface of Smart3D, pass in the plate outline and attribute information, and generate the plate structure.

6. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S4, the parameter input interface for the steps and handrails is associated with the selected box column style, and the default values ​​of the size parameters conform to the ship design specifications.

7. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, In step S4, the specific process of creating the steps and handrails is as follows: Based on the position parameters of the steps and handrails, and taking the surface of the corresponding slab structure as a reference, calculate the coordinates of the axial nodes of each component; Use the Line Feature to connect nodes and generate the axial outline of the steps and handrails; Call the Create Member System interface of Smart3D, pass in the axis outline, component section and material properties, and generate the step and handrail structures respectively.

8. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, After all parameters are entered, the tool will automatically generate all components in batches according to the order of "slab structure → steps → handrail".

9. The parametric modeling method for ballast bridge box piers based on Smart3D according to claim 1, characterized in that, The method is based on secondary development of Smart3D software. The tool is launched through Custom Commands, and the generated model is fully compatible with the native Smart3D model, supporting subsequent structural analysis and drawing production.

10. The application of the Smart3D-based parametric modeling method for lashed bridge box piers according to any one of claims 1-9 in the modeling of lashed bridge box piers on container ships, characterized in that, Suitable for all types of container ships with lashed bridge and column structures, including container ships of different tonnages and with different hatch arrangements.

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