WO-2026091942-A1 - OPTIMIZATION DESIGN METHOD FOR HULL STRUCTURE WITH SHARP INCLUDED ANGLE AND SHIP

WO2026091942A1WO 2026091942 A1WO2026091942 A1WO 2026091942A1WO-2026091942-A1

Abstract

An optimization design method for a hull structure with a sharp included angle and a ship. A confined space of a sharp included angle structure is optimized. A cut-off end is provided on a deck structure at a portion extending toward a ship-line flared shell plate and close to the confined space of the sharp included angle structure. A short beam structure is a below the cut-off end of the deck structure for support. Transverse reinforcing brackets are arranged on a side of the short beam structure close to an edge of the ship-line flared shell plate. A panel is arranged above the transverse reinforcing brackets and covers the transverse reinforcing brackets. The panel extends from below the cut-off end toward the edge of the ship-line flared shell plate along the short beam structure. By cutting off the deck structure in advance, the deck structure no longer extends to the edge of the ship-line flared shell plate, and the deck structure is supported by the short beam structure, thereby solving the problems of difficult construction and stress concentration caused by the deck structure extending to the edge of the ship-line flared shell plate.

Inventors

LOU, Danping
JIANG, Kejin
ZHENG, Xinbin
PAN, Guo

Assignees

沪东中华造船(集团)有限公司

Dates

Publication Date: 20260507
Application Date: 20250917
Priority Date: 20241031

Claims (10)

A method for optimizing the design of a ship hull structure with a sharp angle, characterized by the following steps: Step 1: Determine whether the angle between the edge of the ship's flared outer plating and the deck structure is less than 25°. If it is less than 25°, then the area with an angle less than 25° is determined to be a narrow space with a sharp angle structure. Step 2: Extend the deck structure towards the flared outer plating of the ship's lines and set the cut-off point near the narrow space of the sharp angle structure; Step 3: Install a short beam structure for support below the cut-off end of the deck structure. The short beam structure is supported between the cut-off end of the deck structure and the flared outer plating of the ship's line below the cut-off end. Step 4: Install a transverse reinforcing elbow plate on the side of the short beam structure near the edge of the flared outer plate of the ship's shape. The transverse reinforcing elbow plate connects the short beam structure and the flared outer plate of the ship's shape, and extends along the short beam structure to the edge of the flared outer plate of the ship's shape. Step 5: Install a panel above the transverse reinforcing elbow plate, the panel covering the transverse reinforcing elbow plate, the panel extending from below the cut-off end point along the short beam structure toward the edge of the flared outer plate of the ship's shape.
According to claim 1, the method for optimizing the design of a sharp-angled hull structure is characterized in that the angle between the short beam structure and the deck structure, as well as the angle between the short beam structure and the flared outer plating of the ship's lines, are both greater than 45°.
According to claim 1, the method for optimizing the design of a pointed hull structure is characterized in that a safety protection structure is provided above the cut-off end of the deck structure.
According to claim 2, the method for optimizing the design of a pointed-angle hull structure is characterized in that, in step 3, it further includes using finite element software to model and analyze whether the stress in the optimized region of the pointed-angle hull structure under load conditions meets the requirements. If it does not meet the requirements, the angle of the short beam structure is adjusted so that the stress in the optimized region of the pointed-angle hull structure meets the requirements.
According to claim 1, the method for optimizing the design of a hull structure with a sharp angle is characterized in that, in step 1, the outward flare angle of the hull's outer flare plate is greater than 60°.
According to claim 1, the method for optimizing the design of a pointed hull structure is characterized in that there is a height difference between one end of the transverse reinforcing elbow plate connecting the short beam structure and the lower end face of the deck structure, and the height difference is 15-25mm.
According to claim 3, the method for optimizing the design of a hull structure with a sharp angle is characterized in that the height of the safety protection structure above the deck structure is 600mm-150mm.
According to claim 1, a method for optimizing the design of a hull structure with a sharp angle is characterized in that water flow holes are respectively provided on the transverse reinforcing elbow plate and the short beam structure, the water flow holes of the short beam structure are located near the connection between the short beam structure and the flared outer plate of the ship's hull, and the water flow holes on the transverse reinforcing elbow plate are located near the angle between the transverse reinforcing elbow plate and the short beam structure and the flared outer plate of the ship's hull.
According to claim 1, the method for optimizing the design of a pointed hull structure is characterized in that the narrow space of the pointed hull structure is located in one or more of the engine room, cargo hold, bow, or stern.
A ship is characterized in that a cut-off end point is provided on the side of the deck structure of the hull near the edge of the hull's flared outer plating, and a short beam structure is supported below the cut-off end point. The short beam structure is inclinedly supported between the cut-off end point of the deck structure and the flared outer plating below the cut-off end point. A panel is provided above the transverse reinforcing elbow plate, the panel covering the transverse reinforcing elbow plate, and the panel extends from below the cut-off end point along the short beam structure toward the edge of the flared outer plating.

Description

A method for optimizing the design of a sharp-angled hull structure and a ship Technical Field This invention relates to the field of ship design, specifically to a method for designing a hull structure with a sharp angle and a ship. Background Technology In the field of shipbuilding, especially in the design of container ships, due to the large hull lines, in areas where the flare angle exceeds 65°, if the inner deck intersects the outer plating directly, a sharp angle structure will be formed between the deck and the outer plating. If the angle of the sharp angle is less than 25°, a narrow space will be formed at the angle, resulting in stress concentration at that point, which is detrimental to later construction and maintenance. For this angled position, welding is more difficult, and it is not convenient to perform internal welding. Welding only from the outside cannot guarantee the welding quality. In addition, even if the welding is completed, the stress is relatively concentrated at the angle in the narrow space, which can easily lead to deformation and damage. Summary of the Invention To fundamentally solve the above-mentioned technical problems, this invention provides a method and vessel for optimizing the design of a hull with a sharp angle, which changes the hull structure design to avoid the construction difficulty and stress concentration caused by the excessively small angle of the hull. The technical objective of this invention is achieved through the following technical solution: A method for optimizing the design of a ship hull structure with a sharp angle, the method comprising the following steps: Step 1: Determine whether the angle between the edge of the ship's flared outer plating and the deck structure is less than 25°. If it is less than 25°, then the area with an angle less than 25° is determined to be a narrow space with a sharp angle structure. Step 2: Extend the deck structure towards the flared outer plating of the ship's lines and set the cut-off point near the narrow space of the sharp angle structure; Step 3: Install a short beam structure for support below the cut-off end of the deck structure. The short beam structure is inclined and supported between the cut-off end of the deck structure and the flared outer plating of the ship's line below the cut-off end. Step 4: Install a transverse reinforcing elbow plate on the side of the short beam structure near the edge of the flared outer plate of the ship's shape. The transverse reinforcing elbow plate connects the short beam structure and the flared outer plate of the ship's shape, and extends along the short beam structure to the edge of the flared outer plate of the ship's shape. Step 5: Install a panel above the transverse reinforcing elbow plate, the panel covering the transverse reinforcing elbow plate, the panel extending from below the cut-off end point along the short beam structure toward the edge of the flared outer plate of the ship's shape. Furthermore, the angle between the short beam structure and the deck structure, as well as the angle between the short beam structure and the flared outer plating of the ship's lines, are both greater than 45°. Furthermore, a safety protection structure is installed above the cut-off end of the deck structure. Furthermore, in step 3, the method also includes using finite element software to model and analyze whether the stress in the optimized region of the pointed hull structure under load meets the requirements. If it does not meet the requirements, the angle of the short beam structure is adjusted so that the stress in the optimized region of the pointed hull structure meets the requirements. Furthermore, in step 1, the flare angle of the ship's hull is greater than 60°. Furthermore, there is a height difference of 15-25mm between one end of the transverse reinforcing elbow connecting the short beam structure and the lower end of the deck structure, which facilitates welding at the transverse reinforcing elbow and ensures the strength of the transverse reinforcing elbow. Furthermore, the height of the safety protection structure above the deck structure is 600mm-150mm. Furthermore, water flow holes are provided on the transverse reinforcing elbow plate and the short beam structure respectively. The water flow holes of the short beam structure are located near the connection between the short beam structure and the flared outer plate of the ship's hull. The water flow holes on the transverse reinforcing elbow plate are located near the angle between the transverse reinforcing elbow plate and the short beam structure and the flared outer plate of the ship's hull. Furthermore, the narrow space of the pointed-angle structure is located in one or more of the engine room, cargo hold, bow, or stern. Another aspect provides a ship in which a cut-off end is provided on the side of the deck structure near the edge of the hull's flared outer plating, and a short beam structure is suppo