Container ship side bulkhead and method of designing the same

Abstract

The application relates to a container ship side water-tight strong frame and a design method thereof, and relates to the technical field of container ship hull structure design, which comprises the following steps: a piece of strong frame plate is enclosed by using a perimeter plate as the boundary of the side water-tight strong frame; the perimeter plate comprises an outer plate, an inner shell, an upper platform and a lower platform, and all are provided with longitudinal frames; a through hole is added at the position where the longitudinal frame of the perimeter plate penetrates the strong frame plate, and a water-tight patch plate is arranged; the longitudinal frames on the inner shell and the outer plate of the ship body are respectively sorted according to the vertical coordinates from small to large, then are sequentially and one-to-one matched, and a stiffener is arranged between each pair of longitudinal frames on the strong frame plate; the strong frame plate is divided into multiple panel grids by using the stiffeners, and the steel grade and the plate thickness of each panel grid are determined; the steel grade and the section size of each stiffener are determined; the panel grids and the stiffeners are grouped, and the plate thickness is combined and the size is combined respectively. The application can guarantee the rationality and reliability of the water-tight strong frame design, and is also helpful to improve the design efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of container ship hull structure design, specifically to a design method for a watertight strong frame on the hull side of a container ship. Background Technology

[0002] In recent years, the container shipping industry has enjoyed high demand, with freight rates remaining high. Furthermore, under new carbon emission requirements, shipowners are actively upgrading their fleets, leading to a booming new container ship market. Consequently, container ship design orders have also increased significantly, placing higher demands on design cycles. Improving design efficiency while maintaining quality and quantity has become crucial.

[0003] In container ship structural design, the design of watertight structural frames on the hull side has long relied on the experience of designers, lacking a standardized design process. This has led to numerous problems during the design process, such as unreasonable designs, inconsistent design styles across different ship types, and low efficiency. Furthermore, with the rise of digital ship design, the lack of standardized design methods inevitably makes it impossible to meet the new requirements of three-dimensional design. Summary of the Invention

[0004] In view of the above-mentioned problems in the existing technology, the present invention aims to provide a design method for a watertight strong frame on the side of a container ship, which conforms to the characteristics of standardized design, can not only ensure the rationality and reliability of the design, but also improve the design efficiency.

[0005] To achieve the above objectives, the present invention provides a method for designing a watertight reinforcement frame on the hull side of a container ship, comprising the following steps:

[0006] Step 1: Use the perimeter plate as the boundary of the watertight strong frame on the side to form a strong frame plate; the perimeter plate includes the outer plate, inner shell, upper platform and lower platform, and all of them are equipped with longitudinal ribs;

[0007] Step 2: Add a through hole at the point where the longitudinal rib of the perimeter plate penetrates the strong frame plate, and install a watertight patch plate;

[0008] Step 3: Sort the longitudinal ribs on the inner shell and outer plating of the ship by vertical coordinate from smallest to largest, then match them one by one in order, and set stiffeners between each pair of longitudinal ribs on the strong frame plate.

[0009] Step 4: Use reinforcing materials to divide the reinforcing frame into multiple panels, and determine the steel grade and thickness of each panel.

[0010] Step 5: Determine the steel grade and profile dimensions of each reinforcing member;

[0011] Step 6: Group the grid panels and reinforcing members, and merge the panel thickness and dimensions respectively.

[0012] Preferably, in step one, the number of longitudinal ribs on the outer plate and the inner shell are equal, and their orientations are opposite.

[0013] Preferably, in step two, the steel grade and thickness of the watertight patch plate are the same as those of its adjacent strong frame plate.

[0014] Preferably, in step three, the reinforcing material is of flat steel type, and its orientation is towards the center of the ship.

[0015] Preferably, in step four, the dimensions of each grid are calculated according to the characteristic parameters of each grid, the minimum required thickness is determined, and the corrosion allowance is determined according to the type of the front and rear compartments of the strong frame. Finally, the design thickness of the grid is equal to the minimum thickness plus the corrosion allowance plus the design allowance.

[0016] Preferably, in step five, the required minimum section modulus is determined by calculating the standard dimensions based on the characteristic parameters of each reinforcing member, and the corrosion allowance is determined according to the type of compartment in which it is located. Then, a certain safety factor is considered to determine the final section modulus requirement, and the profile size that meets the requirements is selected accordingly.

[0017] The technical solution of the present invention also provides a watertight reinforced frame for the hull side of a container ship, including a perimeter plate, a watertight patch plate, and reinforcing members; the perimeter plate serves as a boundary to form a reinforced frame plate, including an outer plate, an inner shell, an upper platform, and a lower platform, and each part is provided with longitudinal ribs; at the positions where the longitudinal ribs of the perimeter plate penetrate the reinforced frame plate, through holes and watertight patch plates are provided; reinforcing members are provided between each pair of longitudinal ribs on the reinforced frame plate, and the reinforced members are used to divide the reinforced frame plate into multiple panels.

[0018] Preferably, the number of longitudinal ribs on the outer plate and the inner shell are equal and their orientation is opposite to each other, so as to enhance the stability of the structure and disperse external forces.

[0019] Preferably, the steel grade and thickness of the watertight patch plate are the same as those of the adjacent strong frame plate to ensure the watertightness of the structure.

[0020] Preferably, the reinforcing members are made of flat steel and face inwards to enhance the strength and stability of the structure and facilitate construction and installation.

[0021] The positive effects of the above technical solution are as follows: It proposes a practical design method for the watertight strong frame structure commonly found in container ship structural design. Its characteristics include conformity to standardized design, ensuring both the rationality and reliability of the watertight strong frame design and improving design efficiency. Simultaneously, it enables the rapid generation and flexible modification of the watertight strong frame in 3D design, providing a foundation for automatic generation and intelligent design. Attached Figure Description

[0022] Figure 1 A flowchart illustrating a design method for a watertight reinforcement frame on the hull side of a container ship according to the present invention;

[0023] Figure 2 This is a structural diagram illustrating an implementation of the design method for a watertight reinforced frame on the side of a container ship according to the present invention.

[0024] In the attached diagram: 1. Outer panel; 2. Inner shell; 3. Upper platform; 4. Lower platform; 5. Strong frame plate; 5a. Plate grid; 6. Longitudinal rib; 7. Through hole; 8. Watertight patch plate; 9. Reinforcing material. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0026] Example 1:

[0027] This invention discloses a watertight reinforcement frame for the hull side of a container ship. As a key hull structure, the watertight reinforcement frame is closely related to the ship's performance and safety. The watertight reinforcement frame mainly consists of a perimeter plate, watertight reinforcement plates 8, and reinforcing members 9. The perimeter plate, acting as the boundary, forms the reinforcement frame plate 5, which includes an outer plate 1, an inner shell 2, an upper platform 3, and a lower platform 4, each part being equipped with longitudinal ribs 6. The number of longitudinal ribs 6 on the outer plate 1 and the inner shell 2 is equal and their orientation is opposite. This symmetrical design not only enhances the stability of the structure but also effectively disperses various external forces experienced by the ship during navigation, improving the overall strength of the frame.

[0028] At the location where the longitudinal stiffener 6 of the perimeter plate penetrates the strong frame plate 5, a through hole 7 is added and a watertight reinforcement plate 8 is installed. Its steel grade and thickness are the same as the adjacent strong frame plate 5, ensuring the watertightness of the structure and guaranteeing the navigation safety of the ship. The reinforcing members 9 are made of flat steel, facing towards the center of the ship, and are installed between each pair of longitudinal stiffeners 6 on the strong frame plate 5. This layout helps to enhance the strength and stability of the structure, while also facilitating construction and installation, and improving construction efficiency.

[0029] The reinforcing frame plate 5 is divided into multiple sections 5a using reinforcing members 9. The steel grade and plate thickness of each section 5a need to be determined based on specific conditions. Its dimensions are calculated according to the characteristic parameters of each section 5a to determine the minimum required plate thickness. Furthermore, the corrosion allowance needs to be determined based on the type of the fore and aft compartments of the reinforcing frame. Finally, the design plate thickness of section 5a equals the minimum plate thickness plus the corrosion allowance, plus a design margin, ensuring the reliability and durability of section 5a under different environments. This design method not only considers the structural strength under water pressure loads but also fully considers the corrosion requirements of different liquid media, thus improving the service life of the ship.

[0030] Simultaneously, the steel grade and profile dimensions of each stiffener 9 must be calculated according to its characteristic parameters to determine the minimum section modulus. Then, corrosion allowance is determined based on the compartment type, and a safety factor is considered. Finally, profile dimensions that meet the requirements are selected to ensure the performance of stiffener 9 under various working conditions. Furthermore, plate 5a and stiffener 9 are grouped, and plate thickness and dimensions are merged separately to optimize the design, simplify the design process, and improve design efficiency. This also ensures the rationality and reliability of the structure, facilitating subsequent construction and maintenance. This standardized design process not only improves design efficiency and quality but also lays the foundation for intelligent ship design and automated production, promoting the modernization of the shipbuilding industry.

[0031] Example 2:

[0032] This invention discloses a design method for a watertight structural frame on the hull side of a container ship. This design method is applicable to watertight structural frames on the hull side of container ships and aims to provide a standardized, efficient, and reliable design process. The specific steps are as follows:

[0033] (I) Perimeter board installation

[0034] First, a perimeter plate is used as the boundary of the watertight reinforced frame on the side, forming a reinforced frame plate 5. The perimeter plate covers the outer plate 1, inner shell 2, upper platform 3, and lower platform 4, and each part is equipped with longitudinal ribs 6. Among them, the number of longitudinal ribs 6 on the outer plate 1 and the inner shell 2 is equal and they are oriented opposite each other to ensure the symmetry and stability of the structure, laying the foundation for subsequent design.

[0035] (II) Installation of Watertight Repair Plate 8

[0036] At the location where the longitudinal stiffener 6 of the perimeter plate penetrates the strong frame plate 5, a through hole 7 is added, and a watertight patch plate 8 is installed. The steel grade and plate thickness of the watertight patch plate 8 are the same as those of its adjacent strong frame plate 5 to ensure the integrity and watertightness of the structure and to ensure the navigation safety of the ship.

[0037] (III) Strengthening Material 9 Configuration

[0038] The longitudinal stiffeners 6 on the inner hull 2 ​​and outer plating 1 are sorted from smallest to largest according to their vertical coordinates, and then matched one by one in sequence. Stiffeners 9 are installed between each pair of longitudinal stiffeners 6 on the strong frame plate 5. The stiffeners 9 are made of flat steel and face towards the center of the ship, which helps to enhance the strength and stability of the structure, while also facilitating construction and installation.

[0039] (IV) Grid 5a Division and Parameter Determination

[0040] The reinforcing frame plate 5 is divided into multiple sections 5a using stiffeners 9. For each section 5a, its steel grade and thickness must be determined. The steel grades of section 5a and stiffeners 9 can be selected based on the parent ship design or design experience. The dimensions of section 5a are calculated according to the characteristic parameters of each section 5a to determine the minimum required thickness. Furthermore, corrosion allowances must be determined based on the type of the fore and aft compartments of the reinforcing frame. Finally, the design thickness of section 5a equals the minimum thickness plus the corrosion allowance, plus a design margin, ensuring the reliability and durability of section 5a under different environments.

[0041] (V) Refinement of 9 parameters for reinforcing materials

[0042] For each stiffener 9, its steel grade and profile dimensions need to be further determined. Similarly, the steel grades for plate 5a and stiffener 9 are selected with reference to the parent ship or design experience. Specifically, the method involves calculating the required minimum section modulus based on the characteristic parameters of each stiffener 9. Then, based on the type of compartment it occupies, a corrosion allowance is determined, while considering a certain safety factor, to determine the final section modulus requirement. Based on this, profile dimensions that meet the requirements are selected to ensure the performance of stiffener 9 under various operating conditions.

[0043] (vi) Grouping and Merging Processing

[0044] Finally, the 5a panels and 9 stiffeners were grouped, and their thicknesses and dimensions were merged separately. This reasonable grouping and merging simplifies the design process, improves design efficiency, and ensures the rationality and reliability of the structure, facilitating subsequent construction and maintenance.

[0045] The container ship side watertight reinforcement frame design method provided in this embodiment is standardized. Through standardized steps and parameter settings, it ensures both the rationality and reliability of the design while significantly improving design efficiency. This method not only meets the development needs of modern ship digital design, enabling rapid generation and flexible modification of watertight reinforcement frames in 3D design, but also provides a foundation for automatic generation and intelligent design, promoting the intelligentization of ship design and laying the cornerstone for intelligent ship design and automated production.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for designing a watertight reinforcement frame on the hull side of a container ship, characterized in that, Includes the following steps: Step 1: Use the perimeter plate as the boundary of the watertight strong frame on the side to form a strong frame plate; the perimeter plate includes the outer plate, inner shell, upper platform and lower platform, and all of them are equipped with longitudinal ribs; Step 2: Add a through hole at the point where the longitudinal rib of the perimeter plate penetrates the strong frame plate, and install a watertight patch plate; Step 3: Sort the longitudinal ribs on the inner shell and outer plating of the ship by vertical coordinate from smallest to largest, then match them one by one in order, and set stiffeners between each pair of longitudinal ribs on the strong frame plate. Step 4: Use reinforcing materials to divide the reinforcing frame into multiple panels, and determine the steel grade and thickness of each panel. Step 5: Determine the steel grade and profile dimensions of each reinforcing member; Step 6: Group the grid panels and reinforcing members, and merge the panel thickness and dimensions respectively; In step four, the dimensions of each grid are calculated according to the characteristic parameters of each grid, the minimum required thickness is determined, and the corrosion allowance is determined according to the type of the front and rear compartments of the strong frame. Finally, the design thickness of the grid is equal to the minimum thickness plus the corrosion allowance plus the design allowance. In step five, the standard dimensions are calculated based on the characteristic parameters of each reinforcing member to determine its minimum section modulus. The corrosion allowance is determined according to the type of compartment it is in, and a certain safety factor is considered to determine the final section modulus requirement. The profile size that meets the requirements is then selected accordingly.

2. The design method for a watertight reinforcement frame on the hull side of a container ship according to claim 1, characterized in that, In step one, the number of longitudinal ribs on the outer plate and the inner shell are equal, and they are oriented opposite to each other.

3. The design method for a watertight reinforcement frame on the hull side of a container ship according to claim 2, characterized in that, In step two, the steel grade and thickness of the watertight patch plate are the same as those of its adjacent strong frame plate.

4. The method for designing a watertight reinforcement frame on the hull side of a container ship according to claim 3, characterized in that, In step three, the reinforcing material is a flat steel profile, and its orientation is towards the center of the ship.

5. A watertight reinforcement frame for the hull side of a container ship designed according to the design method of claim 1, characterized in that, It includes a perimeter plate, a watertight patch plate, and reinforcing members; the perimeter plate serves as the boundary, forming a strong frame plate, including an outer plate, an inner shell, an upper platform, and a lower platform, and each part is provided with longitudinal ribs; at the positions where the longitudinal ribs of the perimeter plate penetrate the strong frame plate, through holes and watertight patch plates are provided; reinforcing members are provided between each pair of longitudinal ribs on the strong frame plate, and the reinforcing members are used to divide the strong frame plate into multiple panels.

6. A watertight reinforcement frame for the hull side of a container ship according to claim 5, characterized in that, The number of longitudinal ribs on the outer plate and the inner shell are equal and they are oriented opposite each other to enhance the stability of the structure and disperse external forces.

7. A watertight reinforcement frame for the hull side of a container ship according to claim 6, characterized in that, The steel grade and thickness of the watertight patch plate are the same as those of the adjacent strong frame plate to ensure the watertightness of the structure.

8. A watertight reinforcement frame for the hull side of a container ship according to claim 7, characterized in that, The reinforcing members are made of flat steel and face inwards to enhance the strength and stability of the structure and facilitate construction and installation.

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