Cruise ship structure weight center-of-gravity control method and system, electronic equipment and program product

Abstract

The invention provides a cruise ship structure weight center-of-gravity control method and system, electronic equipment and a program product, and the cruise ship structure weight center-of-gravity control method comprises the steps: calculating a weight center-of-gravity result of a cruise ship in a current stage in each stage of design and manufacturing, and verifying whether the weight center-of-gravity result accords with a preset whole ship weight center-of-gravity target or not; and responding to the condition that the weight gravity center result in the current stage meets the weight gravity center target of the whole ship, and entering the next stage until the whole ship is manufactured. The weight center-of-gravity control method in the structural design stage is summarized, weight center-of-gravity control is carried out in stages, the weight center-of-gravity target of the whole ship is decomposed according to a professional part, the ship can enter the next stage only through the weight center-of-gravity in the current stage, weight center-of-gravity deviation accumulation is avoided, and the ship can enter the next stage. And when the weight gravity center target is exceeded, the difficulty of eliminating deviation is reduced, professional departments with deviation can be positioned more easily, and the accuracy of weight gravity center control in the structural design and construction stage is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cruise ship design and manufacturing, and in particular to a cruise ship structure weight and center of gravity control method, system, electronic equipment and program product. Background Art

[0002] Controlling a ship's weight and center of gravity is a key technology in shipbuilding. Weight control primarily refers to controlling the ship's bare weight, which directly affects its deadweight. If the bare weight exceeds the contracted specifications, not only will construction costs increase, cargo capacity decrease, and value decline, but the ship's actual draft will also exceed its designed draft, posing a risk of capsizing. The center of gravity position affects the ship's buoyancy, stability, and hydrodynamic performance, and must be maintained at an appropriate location. A high center of gravity will take too long to return to equilibrium, affecting stability, while a low center of gravity will cause the ship to pitch during navigation, impacting ride comfort. An incorrect center of gravity position requires additional adjustments, increasing costs.

[0003] For large cruise ships with a length of more than 300 meters, a gross tonnage of more than 100,000 tons, and the most integrated systems and equipment, controlling the weight and center of gravity is extremely difficult. Summary of the Invention

[0004] The technical problem to be solved by the present disclosure is to overcome the above-mentioned defects in the prior art and to provide a method, system, electronic equipment and program product for controlling the weight and center of gravity of a cruise ship structure.

[0005] The present disclosure solves the above technical problems through the following technical solutions:

[0006] The present disclosure provides a method for controlling the weight center of gravity of a cruise ship structure, the method comprising:

[0007] At each stage of design and manufacturing, calculate the weight and center of gravity of the cruise ship at the current stage and verify whether the weight and center of gravity result meets the preset weight and center of gravity target of the entire ship;

[0008] In response to the weight center of gravity result in the current stage meeting the weight center of gravity target for the entire ship, entering the next stage until the entire ship is completed.

[0009] Optionally, the design and manufacturing stages include a basic design stage and a detailed design stage;

[0010] At each stage of design and manufacturing, the weight and center of gravity of the cruise ship at the current stage are calculated, including:

[0011] During the basic design phase, the overall ship weight center of gravity target is decomposed into sub-weight center of gravity targets for each specialized part;

[0012] During the detailed design stage, detailed design of each professional part is carried out according to the sub-weight center of gravity target to determine the weight requirements of each equipment and material, and the sub-weight center of gravity of the corresponding professional part is calculated according to the detailed design results. The weight center of gravity result in the current stage is calculated based on the sub-weight center of gravity.

[0013] Optionally, the design and manufacturing stage also includes a production design stage;

[0014] At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes:

[0015] During the production design stage, production design modeling is performed based on the detailed design to determine the weight requirements of the materials of each component in the assembly, and the actual weight data of each component is obtained through production design weight center of gravity feedback, and the weight center of gravity result in the current stage is calculated based on the actual weight data.

[0016] Optionally, the design and manufacturing stage also includes a construction stage;

[0017] At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes:

[0018] During the construction phase, the intermediate product sections and total sections are weighed to obtain the section and total section weighing data; the ship loading equipment is weighed to obtain the ship loading equipment weighing data; the ship loading outfitting is weighed to obtain the ship loading outfitting weighing data; the subcontractor supply weighing data provided by the subcontractor is obtained; the change weighing data is obtained; and the weight center of gravity result in the current phase is calculated based on the section and total section weighing data, the ship loading equipment weighing data, the ship loading outfitting weighing data, the subcontractor supply weighing data and the change weighing data.

[0019] Optionally, the design and manufacturing stage also includes a completion stage;

[0020] At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes:

[0021] During the completion phase, a full-scale inclination test shall be conducted in accordance with the inclination test procedure requirements provided in the detailed design to determine the weight and center of gravity of the full-scale ship and to calculate the deadweight;

[0022] In response to the weight center of gravity result in the current stage meeting the weight center of gravity target of the entire ship, entering the next stage until the entire ship is completed, including:

[0023] In the completion stage, in response to the actual ship weight center of gravity meeting the entire ship weight center of gravity target, the actual ship weight center of gravity is used as the final weight center of gravity to perform completion loading manual calculations.

[0024] Optionally, the cruise ship structure weight center of gravity control method further includes:

[0025] During the detailed design phase, a WBS (Work Breakdown Structure) code is assigned to each component in the weight architecture to facilitate traversal of each component during the weight statistics process to avoid statistical omissions; wherein the first-level code of the WBS code corresponds to the professional part.

[0026] Optionally, the professional part includes at least one of structure, machinery, electrical, outfitting, cold air ventilation, painting, hotel engineering and design changes.

[0027] The present disclosure also provides a cruise ship structure weight center of gravity control system, the cruise ship structure weight center of gravity control system comprising: a weight center of gravity verification module and a verification pass response module;

[0028] The weight center of gravity verification module is used to calculate the weight center of gravity result of the cruise ship in each stage of design and manufacturing, and verify whether the weight center of gravity result meets the preset weight center of gravity target of the entire ship;

[0029] The verification pass response module is used to respond to the weight center of gravity result in the current stage meeting the weight center of gravity target of the entire ship, and enter the next stage until the entire ship is completed.

[0030] Optionally, the design and manufacturing stages include a basic design stage and a detailed design stage;

[0031] The weight center of gravity verification module is further used to decompose the weight center of gravity target of the entire ship into the weight center of gravity targets of each professional part during the basic design stage;

[0032] The weight center of gravity verification module is also used to carry out detailed design of each professional part according to the sub-weight center of gravity target in the detailed design stage to determine the weight requirements of each equipment and material, calculate the sub-weight center of gravity of the corresponding professional part according to the detailed design results, and calculate the weight center of gravity result in the current stage based on the sub-weight center of gravity.

[0033] Optionally, the design and manufacturing stage also includes a production design stage;

[0034] The weight center of gravity verification module is also used to perform production design modeling according to the detailed design during the production design stage to determine the weight requirements of the materials of each component in the assembly, and obtain the actual weight data of each component through production design weight center of gravity feedback, and calculate the weight center of gravity result in the current stage based on the actual weight data.

[0035] Optionally, the design and manufacturing stage also includes a construction stage;

[0036] The weight center of gravity verification module is also used to weigh the intermediate product sections and blocks during the construction phase to obtain section and block weighing data; weigh the shipping equipment to obtain shipping equipment weighing data; weigh the shipping outfitting to obtain shipping outfitting weighing data; obtain the subcontractor supply weighing data provided by the subcontractor; obtain the change weighing data; and calculate the weight center of gravity result in the current phase based on the section and block weighing data, the shipping equipment weighing data, the shipping outfitting weighing data, the subcontractor supply weighing data and the change weighing data.

[0037] Optionally, the design and manufacturing stage also includes a completion stage;

[0038] The weight center of gravity verification module is further used to carry out a real ship inclination test in accordance with the inclination test procedure requirements provided in the detailed design during the completion stage, measure the weight center of gravity of the real ship, and calculate the deadweight;

[0039] The verification pass response module is further configured to, during the completion phase, in response to the actual ship weight center of gravity meeting the entire ship weight center of gravity target, use the actual ship weight center of gravity as the final weight center of gravity to perform completion loading manual calculations.

[0040] Optionally, the cruise ship structure weight center of gravity control system further includes: a WBS coding module;

[0041] The WBS coding module is used to assign a WBS code to each component in the weight structure during the detailed design phase, so as to facilitate traversal of each component during the weight statistics process to avoid statistical omissions; wherein the first-level code of the WBS code corresponds to the professional part.

[0042] Optionally, the professional part includes at least one of structure, machinery, electrical, outfitting, cold air ventilation, painting, hotel engineering and design changes.

[0043] The present disclosure also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor implements the aforementioned cruise ship structure weight center of gravity control method when executing the computer program.

[0044] The present disclosure also provides a computer program product, comprising a computer program, which implements the aforementioned cruise ship structure weight center of gravity control method when executed by a processor.

[0045] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0046] The positive progress effect of the present disclosure is that: by sorting out the weight center of gravity control management system for large cruise ships and summarizing the weight center of gravity control methods in the structural design stage, weight center of gravity control is carried out in stages, and the weight center of gravity targets of the entire ship are decomposed according to professional parts (operation types and departments). Only by passing the weight center of gravity of the current stage can we enter the next stage, avoiding the accumulation of weight center of gravity deviations, and reducing the difficulty of eliminating deviations when exceeding the weight center of gravity targets. It is easier to locate the professional department that causes the deviation, thereby ensuring the accuracy of weight center of gravity control in the design and construction structure stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a flow chart of a cruise ship structure weight center of gravity control method provided in Example 1 of the present disclosure;

[0048] Figure 2 This is a flowchart of a specific implementation of step S11 of a cruise ship structure weight center of gravity control method provided in Example 1 of the present disclosure;

[0049] Figure 3 This is a flow chart of a cruise ship structure weight center of gravity control method provided in Example 1 of the present disclosure;

[0050] Figure 4 A schematic diagram showing the phase division of the design and manufacturing of a cruise ship structure weight and center of gravity control method provided in Example 1 of the present disclosure, as well as the main input and output data of each phase;

[0051] Figure 5 This is an example diagram of a CDSP weight and center of gravity management system for a cruise ship structure weight and center of gravity control method provided in Example 1 of the present disclosure;

[0052] Figure 6 A schematic diagram of a module for a cruise ship structure weight and center of gravity control system provided in Example 2 of the present disclosure;

[0053] Figure 7 This is a structural diagram of an electronic device provided in Example 3 of the present disclosure. DETAILED DESCRIPTION

[0054] The present disclosure is further illustrated below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0055] In the embodiments of the present disclosure, prefixes such as "first" and "second" are used only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. In the embodiments of the present disclosure, the use of prefixes such as ordinal numbers to distinguish description objects does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitations should be constituted due to the use of such prefixes. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0056] Example 1

[0057] Figure 1 This is a flowchart of a cruise ship structure weight center of gravity control method provided by an exemplary embodiment of the present disclosure. The cruise ship structure weight center of gravity control method includes:

[0058] S11. At each stage of design and manufacturing, calculate the weight center of gravity of the cruise ship in the current stage and verify whether the weight center of gravity result meets the preset weight center of gravity target of the entire ship.

[0059] S12. In response to the weight center of gravity result in the current stage meeting the weight center of gravity target of the entire ship, proceed to the next stage until the entire ship is completed.

[0060] For example, the Vista-class cruise ships are 323.6 meters long, 37.2 meters wide, and have a gross tonnage of 135,500 tons. They are equipped with 107 systems, 55,000 pieces of equipment, and 25 million parts. While typical ships have approximately 400 sections, large cruise ships have nearly 700. These ships feature a wide beam, shallow depth, long superstructures, and multiple decks. They also feature specialized structures such as theaters, restaurants, atriums, swimming pools, and water parks. Parts of the superstructure above deck 13 are constructed of aluminum alloy. Compared to conventional ships, these ships have a greater number of parts and sections, resulting in a highly complex structure.

[0061] For this cruise ship, the preset target weight and center of gravity are: a waterborne weight of no less than 9,471 tons; an empty ship weight of no less than 57,671 tons; and a vertical center of gravity no higher than 20.03 meters. The target weight and center of gravity can be set based on actual conditions.

[0062] The cruise ship can use a right-handed coordinate system, with the vertical line at the stern perpendicular as the Z axis, which is positive upward, the stern perpendicular as the base point and arranged along the length of the ship as the X axis, which is positive toward the bow, and the centerline of the hull as the Y axis, which is positive toward the left. The intersection of the centerline of the cruise ship bottom surface and the stern perpendicular is translated 16675mm toward the bow as the origin 0. In this way, every part (component or component) on the ship has a corresponding center of gravity coordinate. The cruise ship can be counted by dividing it into unit modules. Let the number of components in the segment be N, the net weight of each component (serial number is n) be Wni (i=1,2,3…,N), and the center of gravity coordinates be Xi, Yi, Zi (i=1,2,3…,N). Then the weight of the segment and the position equation of the center of gravity are:

[0063]

[0064] Weight and center of gravity control is a key component of cruise ship design and construction. Starting with the basic design phase, weight and center of gravity (CGR) allocation is performed based on the results from the basic design demonstration phase, serving as the basis for target CGR control during the detailed design phase. Furthermore, through the decomposition and statistical analysis of the CGR of each system during the design process and the monitoring of the weight of equipment, materials, and sections during construction, weight deviations are promptly identified and corrective measures implemented to achieve target CGR control for the entire ship. Finally, the results of CGR control are verified through inclination tests during the completion phase.

[0065] In this embodiment, by sorting out the weight center of gravity control management system of large cruise ships and summarizing the weight center of gravity control method in the structural design stage, the weight center of gravity control is carried out in stages, and the weight center of gravity target of the whole ship is decomposed according to the professional part (operation type and department). Only after passing the weight center of gravity of the current stage can it enter the next stage, which avoids the accumulation of weight center of gravity deviation and reduces the difficulty of eliminating deviation when exceeding the weight center of gravity target. It is easier to locate the professional department that causes the deviation, thereby ensuring the accuracy of weight center of gravity control in the design and construction structure stage.

[0066] In one embodiment, the stages of designing and manufacturing include a basic design stage and a detailed design stage.

[0067] Reference Figure 2 , step S11 includes:

[0068] S111. During the basic design phase, the weight center of gravity target of the entire ship shall be decomposed into the weight center of gravity targets of each professional part.

[0069] S112. During the detailed design phase, detailed design of each professional part is carried out according to the weight center of gravity target to determine the weight requirements of each equipment and material. The weight center of gravity of the corresponding professional part is calculated based on the detailed design results, and the weight center of gravity result in the current stage is calculated based on the weight center of gravity of the part.

[0070] in, Figure 3 The phase division of design and manufacturing and the main input and output data of each phase are shown.

[0071] During the basic design phase, it is necessary to study the basic design plan of the weight center of gravity, start from the "zero point" decomposition to make an estimate of the weight center of gravity of the entire ship, and be responsible for monitoring the weight center of gravity of the entire ship.

[0072] During the detailed design phase, the target for the empty ship weight and center of gravity is determined based on the weight estimate in the basic design phase. The weight requirements for equipment and materials are clearly stated in the procurement technical specifications to provide a basis for signing the material procurement contract. A feedback form for the production design weight and center of gravity is established, and actual weight data is collected for comparative analysis with theoretical data. If the system weight exceeds the tolerance, a lightweight design study is required. The statistically analyzed weight and center of gravity data of the entire ship are submitted to the basic design for load calculation and loading condition calculation.

[0073] In one embodiment, the design and manufacturing stage also includes a production design stage.

[0074] Reference Figure 4 , step S11 further includes:

[0075] S113. During the production design phase, production design modeling is performed based on the detailed design to determine the weight requirements of the materials of each component in the assembly, and the actual weight data of each component is obtained through production design weight center of gravity feedback. The weight center of gravity result in the current phase is calculated based on the actual weight data.

[0076] Production design involves modeling production design based on detailed design drawings, breaking down weight control throughout the production design process. Weight requirements for relevant materials are clearly defined in procurement specifications and order PORs. Data is provided in the form of weight center of gravity feedback based on the detailed design. The theoretical values ​​and tolerance control ranges for raw materials, on-site equipment, and intermediate products are verified in the on-site weighing list. The tolerance for raw material steel plate, typically used for ordinary shipbuilding, is generally controlled within 0.3mm. Cruise ships utilize extensively thin steel plates under 6mm, and even slight deviations can significantly increase the weight of the main hull. Material specifications and tolerances can be customized based on actual conditions.

[0077] In one embodiment, the design and manufacture phase also includes a construction phase.

[0078] Reference Figure 4 , step S11 further includes:

[0079] S114. During the construction phase, the intermediate products are weighed in sections and blocks to obtain the section and block weighing data; the shipboard equipment is weighed to obtain the shipboard equipment weighing data; the shipboard outfitting is weighed to obtain the shipboard outfitting weighing data; the subcontractor supply weighing data provided by the subcontractor is obtained; the change weighing data is obtained; and the weight center of gravity result within the current phase is calculated based on the section and block weighing data, the shipboard equipment weighing data, the shipboard outfitting weighing data, the subcontractor supply weighing data, and the change weighing data.

[0080] During the construction phase, cruise ships utilize extensively thin steel plates less than 6mm to reduce weight. While the procurement tolerance for steel plates used on ordinary ships is generally controlled within 0.3mm, cruise ships require a tolerance of 0.15mm. Steel mills are required to self-check the thickness of each sheet based on weight requirements, and the Quality Assurance Department conducts spot checks. Incoming equipment, pipes, cables, and outfitting pallets must meet specifications and weight control requirements. Upon delivery, manufacturers must provide self-inspection reports, and the receiving department will conduct spot checks for tolerances, maintain material records and tracking, and submit corresponding weight control sheets.

[0081] For intermediate products, production departments, such as sections and final blocks, should weigh them in their final state and submit weighing records. Structures and outfitting should be in place when weighing sections. If the sections are not in their final state, a list of unassembled parts must be provided during weighing. If the weighing data exceeds the weight tolerance, the design and construction methods departments will need to conduct an assessment to determine whether to release the product.

[0082] Theoretical weights must be provided for painting, insulation, and dressing materials. During construction, strict precision management requirements must be adhered to, with proper area division and usage statistics maintained, and actual data provided as feedback. Welding weights are estimated by the designer, and weld leg heights are controlled according to the production design drawings during construction. Cruise ship interior turnkey projects will no longer be broken down into specific disciplines but will instead be organized as separate packages (subcontracts). Subcontractors must submit weight data upon arrival, conduct spot checks on subcontracted projects, and maintain records of the turnkey package weights upon arrival.

[0083] In one embodiment, the design and manufacturing stage also includes a completion stage.

[0084] Reference Figure 4 , step S11 further includes:

[0085] S115. During the completion phase, the actual ship inclination test shall be carried out in accordance with the inclination test procedure requirements provided in the detailed design, the actual ship weight center of gravity shall be measured, and the deadweight shall be calculated.

[0086] Step S12 includes:

[0087] At the completion stage, in response to the actual ship weight center of gravity meeting the entire ship weight center of gravity target, the actual ship weight center of gravity is used as the final weight center of gravity for completion loading manual calculations.

[0088] Among them, according to the inclination test procedure requirements provided by the detailed design, the actual ship inclination test is carried out, the weight center of gravity of the actual ship is measured, and the deadweight is calculated; the basic design inputs the final weight center of gravity determined by the classification society, and the completion loading manual calculation is carried out.

[0089] In one embodiment, the cruise ship structure weight center of gravity control method further includes:

[0090] During the detailed design phase, each component in the weight structure is assigned a WBS code to facilitate traversal of each component during the weight counting process to avoid missing statistics. The first-level code of the WBS code corresponds to the professional part.

[0091] Among them, the theoretical weight structure of cruise ships is based on the work breakdown structure (WBS) decomposition of the parent ship. Combined with the characteristics of its own design and construction organizational model, and taking into full consideration the compatibility of the two as well as production design and construction practices, a complete set of domestic alternative weight control WBS decomposition scheme standards has been formed. The following table is an introduction to the first-level WBS coding of cruise ships.

[0092] WBS code Encoding meaning WBS1A Hull & Steel Structure WBS1B Insulation dressing coating WBS1C Outfitting system equipment WBS1D Engine system equipment WBS1E Air conditioning and refrigeration systems WBS1F electrical system WBS1G Catering and laundry services WBS1H cabin WBS1K Public areas WBS1L Propulsion system WBS1M Piping system WBS1N cable

[0093] The structural engineering department is responsible for the production design of the cruise ship's primary structure, which accounts for approximately 51% of the ship's total weight and is a critical component. Based on detailed design drawings and cruise ship design standards, the department conducts production design modeling. They regularly calculate the weight centers of gravity of various components in the production design models, collaborate on weight center of gravity benchmarking analysis between the detailed design and production design, and develop weight center of gravity control measures.

[0094] According to the WBS breakdown table, the structural engineering department is responsible for controlling the weight of the hull structure for WBS1A. 90% of the cruise ship's main steel structure is designed and modeled using modeling software, so this weight can be extracted and calculated using the software. Above deck 13, the cruise ship's I and L sections also contain aluminum alloy sections, which are also designed and modeled in the modeling software. These sections serve as background reference for other disciplines. Since these sections are outsourced to a contractor, the final weight of these sections is adjusted based on the data provided by the contractor. The anchor holes, thruster bells, anchor chain barrel connectors, and bow posts are not modeled in the software; their weights must be calculated separately. It's important to note that the anchor hole section's outer plating is linear. To ensure accurate anchor hole openings, the process requires that these holes be drilled during construction. These holes are not drilled in the model, so the weight of the outer plating at the holes must be deducted when calculating the anchor hole section weight to prevent duplication. The hull's marked weight is also modeled separately from the sections, and this weight can be estimated using nesting weights. The theoretical weight of the cruise ship's welding materials was calculated based on the extracted weld information data, and was corrected based on the weld leg height measured during the actual construction process. The final production design was determined based on a welding allowance of 1.24%.

[0095] The following table shows an example of the corresponding disciplines for the first and second levels of WBS1A-Hull & Steel Structure.

[0096]

[0097]

[0098] In order to cope with the huge amount of cruise ship weight and center of gravity data, a cruise ship weight and center of gravity management system was developed in the independently designed ship digital design platform (CDSP), such as Figure 5 As shown in the figure, the system can automatically synchronize the weight and center of gravity of the model with the production design end through a program. Review and release permissions are set, and professional leaders are responsible for updating and releasing their respective professional data. The system can automatically decompose and count the weight and center of gravity of each professional during the design process, generate full-ship weight and center of gravity data that meets hierarchical requirements, and export weight and center of gravity feedback tables in the form required for detailed design. It also provides timely warnings for overweight of the entire section, providing data support for production nodes such as model balancing, section weighing, section hoisting, half-ship floating, and tilting tests during the cruise ship construction process.

[0099] The weight and center of gravity of the cruise ship's main structure are calculated using sections as units. The basic principle is that the CDSP platform identifies the assembly attributes of each section, runs a program to traverse the weight and center of gravity data of all components in each section in the model software, and calculates according to the mathematical principles of weight and center of gravity to ultimately generate complete section weight and center of gravity data.

[0100] The CDSP system is not only used in structural engineering, it also covers almost all cruise ship production and design disciplines, including mechanical installation, ship installation, electrical equipment, air conditioning and refrigeration, hotel engineering, and construction methods. The use of information tools has replaced the traditional manual statistical model, and project managers can use the system to perform efficient weight and center of gravity management.

[0101] The weight of a cruise ship's structure accounts for more than half of the entire ship. It is crucial to ensure that the structure is designed and manufactured appropriately, and to provide accurate data on the weight and center of gravity of the structure. Based on the professional weight and center of gravity management model for cruise ship structures, the following key control points are summarized:

[0102] (1) Ensure the accuracy of the production model

[0103] The structural professionals must strictly carry out production design modeling work according to the detailed design drawings and cruise ship design standards. They cannot make changes at will, avoid replacing thin plates with thick plates, and do not allow large to lead small or strong to replace weak. Equipment should be arranged at the hard part of the structure as much as possible to reduce additional structural reinforcement. Lightening holes should be set in the transverse and longitudinal deck beams according to the detailed design. In particular, when there is no detailed drawing reference for deck beams at non-whole-frame positions, lightening holes should generally be set in positions without tightness requirements according to the whole-frame positions.

[0104] (2) Focus on monitoring of modification opinions

[0105] For structural modifications proposed by shipowners during ship inspections, or changes in process construction routes, the changes in sections involved will be monitored closely, and careful calculations of weight and center of gravity changes will be made and feedback will be updated in a timely manner.

[0106] (3) Pre-define the unmodeled project

[0107] Unmodeled items cannot be extracted in the software, which can easily lead to statistical omissions or duplications. The project manager should define unmodeled items in advance at the beginning of the project to prevent statistical omissions. When dividing anchor holes into sections, the weight of the openings should be deducted to prevent statistical duplications.

[0108] (4) Model attributes are defined correctly

[0109] Since the CDSP system is used to manage weight and center of gravity, the production design model attributes in the software must be correctly defined. When building a production design model in the software, structural professionals must standardize the definition of the subordinate relationship of steel plates and profiles, plate rack attributes (Naming Category), plate thickness and material information, etc. The plate rack attributes must be defined correctly, which will affect the accuracy of plate rack naming and subsequent weight decomposition table extraction. When creating a segmented assembly directory tree level, only the segment level attributes are defined as Block. If there are multiple Block attribute groups in the segment, the system can only recognize the first one when extracting weight, which will cause weight loss.

[0110] (5) Prevent modeling auxiliary structures from being mixed into segments

[0111] For structures such as the cruise ship's bulbous bow and stern balcony, special template frames need to be made for process reasons. Some sections need to build auxiliary plates because other professionals provide background models. These auxiliary parts do not belong to the sections themselves, so they must not be pulled into the section assembly to prevent errors in the statistical weight of the sections.

[0112] In one embodiment, the specialized parts include at least one of structure, machinery, electrical, outfitting, cold air ventilation, painting, hotel engineering, and design changes.

[0113] Example 2

[0114] Corresponding to the aforementioned cruise ship structure weight center of gravity control method embodiment, the present disclosure also provides an embodiment of a cruise ship structure weight center of gravity control system.

[0115] Figure 6 A module diagram of a cruise ship structure weight center of gravity control system provided by an exemplary embodiment of the present disclosure includes: a weight center of gravity verification module 1 and a verification pass response module 2.

[0116] The weight center of gravity verification module 1 is used to calculate the weight center of gravity of the cruise ship in each stage of design and manufacturing, and verify whether the weight center of gravity result meets the preset weight center of gravity target of the entire ship.

[0117] Verification is passed and response module 2 is used to respond to whether the weight center of gravity result in the current stage meets the weight center of gravity target of the entire ship, and enter the next stage until the entire ship is completed.

[0118] In this embodiment, by sorting out the weight center of gravity control management system of large cruise ships and summarizing the weight center of gravity control method in the structural design stage, the weight center of gravity control is carried out in stages, and the weight center of gravity target of the whole ship is decomposed according to the professional part (operation type and department). Only after passing the weight center of gravity of the current stage can it enter the next stage, which avoids the accumulation of weight center of gravity deviation and reduces the difficulty of eliminating deviation when exceeding the weight center of gravity target. It is easier to locate the professional department that causes the deviation, thereby ensuring the accuracy of weight center of gravity control in the design and construction structure stage.

[0119] In one embodiment, the stages of designing and manufacturing include a basic design stage and a detailed design stage.

[0120] The weight center of gravity verification module 1 is also used to decompose the weight center of gravity target of the entire ship into the weight center of gravity targets of each professional part during the basic design stage.

[0121] The weight center of gravity verification module 1 is also used to carry out detailed design of each professional part according to the weight center of gravity target of the division in the detailed design stage to determine the weight requirements of each equipment and material, calculate the weight center of gravity of the division of the corresponding professional part according to the detailed design results, and obtain the weight center of gravity result in the current stage based on the weight center of gravity of the division.

[0122] In one embodiment, the design and manufacturing stage also includes a production design stage.

[0123] The weight center of gravity verification module 1 is also used to perform production design modeling according to the detailed design in the production design stage to determine the weight requirements of the materials of each component in the assembly, and obtain the actual weight data of each component through the production design weight center of gravity feedback, and calculate the weight center of gravity result in the current stage based on the actual weight data.

[0124] In one embodiment, the design and manufacture phase also includes a construction phase.

[0125] The weight center of gravity verification module 1 is also used during the construction phase to weigh intermediate product sections and aggregates to obtain section and aggregate weight data; weigh shipboard equipment to obtain shipboard equipment weight data; weigh shipboard outfitting to obtain shipboard outfitting weight data; obtain subcontractor supply weight data provided by subcontractors; and obtain change weight data. The weight center of gravity result for the current phase is calculated based on the section and aggregate weight data, shipboard equipment weight data, shipboard outfitting weight data, subcontractor supply weight data, and change weight data.

[0126] In one embodiment, the design and manufacturing stage also includes a completion stage.

[0127] The weight center of gravity verification module 1 is also used to carry out a real ship tilting test in the completion stage according to the tilting test procedure requirements provided by the detailed design, measure the weight center of gravity of the real ship, and calculate the load capacity.

[0128] The verification response module 2 is further configured to, in the completion phase, in response to the actual ship weight center of gravity meeting the entire ship weight center of gravity target, use the actual ship weight center of gravity as the final weight center of gravity to perform completion loading manual calculations.

[0129] In one embodiment, the cruise ship structure weight center of gravity control system further includes: a WBS encoding module 3.

[0130] The WBS coding module 3 is used to assign a WBS code to each component in the weight structure during the detailed design phase, so as to facilitate the traversal of each component during the weight statistics process to avoid statistical omissions. Among them, the first-level code of the WBS code corresponds to the professional part.

[0131] In one embodiment, the specialized parts include at least one of structure, machinery, electrical, outfitting, cold air ventilation, painting, hotel engineering, and design changes.

[0132] Since the system embodiments generally correspond to the method embodiments, reference will be made to the description of the method embodiments for relevant details. The system embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components of the units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the disclosed solution.

[0133] Example 3

[0134] Figure 7 This is a structural diagram of an electronic device shown in an example embodiment of the present disclosure. The electronic device includes a memory, a processor, and a computer program stored in the memory and for running on the processor. When the processor executes the computer program, it implements the cruise ship structure weight center of gravity control method described in any of the above embodiments. Figure 7 The electronic device 90 shown is only an example and should not limit the functionality and scope of use of the embodiments of the present disclosure.

[0135] like Figure 7 As shown, the electronic device 90 may be a general-purpose computing device, such as a server device. Components of the electronic device 90 may include, but are not limited to, the at least one processor 91, the at least one memory 92, and a bus 93 connecting different system components (including the memory 92 and the processor 91).

[0136] The bus 93 includes a data bus, an address bus, and a control bus.

[0137] The memory 92 may include a volatile memory, such as a random access memory (RAM) 921 and / or a cache memory 922 , and may further include a read-only memory (ROM) 923 .

[0138] The memory 92 may also include a program tool 925 (or utility) having a set (at least one) of program modules 924, such program modules 924 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0139] The processor 91 executes various functional applications and data processing by running the computer programs stored in the memory 92, such as the cruise ship structure weight center of gravity control method provided in any of the above embodiments.

[0140] The electronic device 90 can also communicate with one or more external devices 94 (e.g., a keyboard, pointing device, etc.). Such communication can occur via an input / output (I / O) interface 95. Furthermore, the electronic device 90 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 96. As shown, the network adapter 96 communicates with other modules of the electronic device 90 via a bus 93. It should be understood that, although not shown, other hardware and / or software modules can be used in conjunction with the electronic device 90, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, RAID (RAID) systems, tape drives, and data backup storage systems.

[0141] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0142] Example 4

[0143] An embodiment of the present disclosure further provides a computer program product, comprising a computer program, which, when executed by a processor, implements any of the above-mentioned methods for controlling the weight and center of gravity of a cruise ship structure.

[0144] The program code for executing the computer program product of the present disclosure may be written in any combination of one or more programming languages, and the program code may be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on the remote device.

[0145] While specific embodiments of the present disclosure have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and such changes and modifications are intended to fall within the scope of protection of the present disclosure.

Claims

1. A method for controlling the weight center of gravity of a cruise ship structure, characterized in that: The cruise ship structure weight center of gravity control method includes: At each stage of design and manufacturing, calculate the weight and center of gravity of the cruise ship at the current stage and verify whether the weight and center of gravity result meets the preset weight and center of gravity target of the entire ship; In response to the weight center of gravity result in the current stage meeting the weight center of gravity target for the entire ship, entering the next stage until the entire ship is completed.

2. The cruise ship structure weight center of gravity control method according to claim 1, characterized in that: The design and manufacturing stages include the basic design stage and the detailed design stage; At each stage of design and manufacturing, the weight and center of gravity of the cruise ship at the current stage are calculated, including: During the basic design phase, the overall ship weight center of gravity target is decomposed into sub-weight center of gravity targets for each specialized part; During the detailed design stage, detailed design of each professional part is carried out according to the sub-weight center of gravity target to determine the weight requirements of each equipment and material, and the sub-weight center of gravity of the corresponding professional part is calculated according to the detailed design results. The weight center of gravity result in the current stage is calculated based on the sub-weight center of gravity.

3. The cruise ship structure weight center of gravity control method according to claim 2, characterized in that: The design and manufacturing stage also includes the production design stage; At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes: During the production design stage, production design modeling is performed based on the detailed design to determine the weight requirements of the materials of each component in the assembly, and the actual weight data of each component is obtained through production design weight center of gravity feedback, and the weight center of gravity result in the current stage is calculated based on the actual weight data.

4. The cruise ship structure weight center of gravity control method according to claim 2, characterized in that: The design and manufacturing stage also includes the construction stage; At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes: During the construction phase, the intermediate product sections and total sections are weighed to obtain the section and total section weighing data; the ship loading equipment is weighed to obtain the ship loading equipment weighing data; the ship loading outfitting is weighed to obtain the ship loading outfitting weighing data; the subcontractor supply weighing data provided by the subcontractor is obtained; the change weighing data is obtained; and the weight center of gravity result in the current phase is calculated based on the section and total section weighing data, the ship loading equipment weighing data, the ship loading outfitting weighing data, the subcontractor supply weighing data and the change weighing data.

5. The cruise ship structure weight center of gravity control method according to claim 2, characterized in that: The design and manufacturing stage also includes the completion stage; At each stage of design and manufacturing, the calculation of the weight and center of gravity of the cruise ship at the current stage also includes: During the completion phase, a full-scale inclination test shall be conducted in accordance with the inclination test procedure requirements provided in the detailed design to determine the weight and center of gravity of the full-scale ship and to calculate the deadweight; In response to the weight center of gravity result in the current stage meeting the weight center of gravity target of the entire ship, entering the next stage until the entire ship is manufactured, including: In the completion stage, in response to the actual ship weight center of gravity meeting the entire ship weight center of gravity target, the actual ship weight center of gravity is used as the final weight center of gravity to perform completion loading manual calculations.

6. The cruise ship structure weight center of gravity control method according to claim 2, characterized in that: The cruise ship structure weight center of gravity control method further includes: During the detailed design phase, a WBS code is assigned to each component in the weight structure to facilitate traversal of each component during the weight statistics process to avoid statistical omissions; wherein the first-level code of the WBS code corresponds to the professional part.

7. The cruise ship structure weight center of gravity control method according to claim 6, characterized in that: The professional part includes at least one of structure, machinery, electrical, outfitting, cold air ventilation, painting, hotel engineering and design changes.

8. A cruise ship structure weight center of gravity control system, characterized in that: The cruise ship structure weight center of gravity control system includes: a weight center of gravity verification module and a verification response module; The weight center of gravity verification module is used to calculate the weight center of gravity result of the cruise ship in each stage of design and manufacturing, and verify whether the weight center of gravity result meets the preset weight center of gravity target of the entire ship; The verification pass response module is used to respond to the weight center of gravity result in the current stage meeting the weight center of gravity target of the entire ship, and enter the next stage until the entire ship is completed.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and configured to run on the processor, wherein: When the processor executes the computer program, the cruise ship structure weight center of gravity control method described in any one of claims 1 to 7 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the method for controlling the weight and center of gravity of a cruise ship structure according to any one of claims 1 to 7 is implemented.

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