CN-122009380-A - Box-shaped ship body structure and design method

CN122009380ACN 122009380 ACN122009380 ACN 122009380ACN-122009380-A

Abstract

The application discloses a box-shaped ship body structure and a design method, wherein the box-shaped ship body structure comprises a ship body extending along the longitudinal direction, the ship body is provided with an inner cabin, a first reinforcing plate is arranged in the inner cabin and extends along the longitudinal direction, a second reinforcing plate is arranged in the inner cabin and extends along the longitudinal direction, the second reinforcing plate and the first reinforcing plate are transversely spaced and symmetrically arranged along the middle longitudinal section of the ship body, the first reinforcing plate and the second reinforcing plate divide the inner cabin into a left cabin, a middle cabin and a right cabin which are transversely and sequentially arranged, and a middle shaft of the transverse section structure of the ship body is positioned at the geometric center line position of the transverse section structure of the ship body in the height direction. The first reinforcing plate and the second reinforcing plate which are symmetrical at intervals along the middle longitudinal section are used for enabling the middle axis of the structure of the cross section of the ship body structure to be positioned at the geometric center line position of the cross section structure in the height direction, so that the consumption of structural materials can be obviously reduced under the condition of meeting the same bearing requirement, the weight of the ship body is reduced, and the construction cost is effectively reduced.

Inventors

HU CHAOKAI
LI ZHIFENG
ZHANG HONGYAN
YANG ZHOU
WU LIANG

Assignees

武昌船舶重工集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260128

Claims (10)

1. A box-shaped ship body structure, characterized by comprising the following steps: A cabin extending longitudinally, the cabin having an inner cabin; The first reinforcing plate is arranged in the inner cabin and extends longitudinally, and two ends of the first reinforcing plate in the height direction are respectively connected with the top wall and the bottom wall of the inner cabin; the second reinforcing plate is arranged in the inner cabin and extends longitudinally, is transversely spaced from the first reinforcing plate and is symmetrically arranged along the middle longitudinal section of the cabin body; The first reinforcing plate and the second reinforcing plate divide the inner cabin into a left cabin, a middle cabin and a right cabin which are sequentially distributed along the transverse direction; The central axis of the cross-sectional structure of the cabin is positioned at the geometrical central line of the cross-sectional structure of the cabin in the height direction.
2. The tank hull structure according to claim 1, wherein a first inner floor is provided within said left tank, said first inner floor extending in a lateral and longitudinal direction of said left tank, respectively, to divide said left tank into a left void tank region at an upper surface of said first inner floor and a left ballast tank region at a lower surface of said first inner floor; a second inner bottom plate is arranged in the right cabin and extends transversely and longitudinally along the right cabin respectively so as to divide the right cabin into a right empty cabin area and a right ballast cabin area, the right empty cabin area is positioned on the upper surface of the second inner bottom plate, and the right ballast cabin area is positioned on the lower surface of the second inner bottom plate; The second inner bottom plate and the first inner bottom plate are arranged in a mirror symmetry mode along the middle longitudinal section.
3. The box-type hull structure according to claim 1, wherein the inner wall of said middle deck corresponding in the height direction is provided with a first reinforcement extending in the longitudinal direction, the cross section of said first reinforcement is T-shaped, and the small end of said first reinforcement is connected with the inner wall of said middle deck corresponding in the height direction; Wherein the first reinforcement is disposed at a position corresponding to the middle longitudinal section.
4. The box hull structure according to claim 2, wherein said hull includes an upper deck, a lower floor, a port side deck, and a starboard side deck, said upper deck being spaced apart in a height direction and disposed opposite to said lower floor, said port side deck being spaced apart in a lateral direction and disposed opposite to said starboard side deck, and both ends of said port side deck in a height direction being connected to said upper deck and said lower floor, respectively, and both ends of said starboard side deck in a height direction being connected to said upper deck and said lower floor, respectively; The two ends of the first reinforcing plate in the height direction are respectively connected with the upper deck and the lower bottom plate and are enclosed with the port side shell plate to form the left cabin; two ends of the second reinforcing plate in the height direction are respectively connected with the upper deck and the lower bottom plate and are enclosed with the starboard side shell plate to form the right cabin; The first reinforcing plate, the second reinforcing plate, the upper deck and the lower bottom plate which are positioned between the first reinforcing plate and the second reinforcing plate enclose the middle cabin together.
5. The box hull structure according to claim 4, wherein said intermediate deck is further provided with an inboard channel extending longitudinally; The in-cabin channel is arranged adjacent to the left cabin or the right cabin, wherein the upper deck and the first reinforcing plate or the second reinforcing plate form two adjacent side walls of the in-cabin channel.
6. The box hull structure of claim 5, further comprising: the flat-bulb steels extend longitudinally, and the flat-bulb steels are arranged on the peripheral wall of the cabin body, the first reinforcing plate, the second reinforcing plate, the first inner bottom plate, the second inner bottom plate and the cabin inner channel at intervals.
7. The box hull structure according to claim 6, wherein said centre tanks are further provided with channel side panels and channel bottom panels, said channel side panels and said channel bottom panels being co-enclosed with said deck and said first or second reinforcement panels to form said intra-tank channels; The flat bulb steels are arranged at intervals on one side, away from the channel in the cabin, of the channel side plate and the channel bottom plate.
8. The box hull structure according to claim 6, wherein said upper deck, said lower deck, said port side skin and said starboard side skin are provided with a plurality of said flat bulb steels at intervals on a side facing said inner deck; a plurality of flat-bulb steels are arranged on one side, facing the left cabin, of the first reinforcing plate and on the other side, facing the right cabin, of the second reinforcing plate at intervals along the height direction; A plurality of flat-bulb steels are arranged at intervals along the transverse direction on one side of the first inner bottom plate facing the left ballast tank area and one side of the second inner bottom plate facing the right ballast tank area; Wherein, a plurality of flat-bulb steels are symmetrically arranged along the middle longitudinal section.
9. The box hull structure according to claim 4, wherein said upper deck bulges upward at a position corresponding to said midsection.
10. A method of designing a box hull structure according to any of claims 1-9, comprising the steps of: Determining design constraint conditions, wherein the design constraint conditions comprise the minimum value that the cross section moment of inertia of the box-shaped ship body structure needs to meet the standard requirement, and the geometric midlines of the cross section of the box-shaped ship body structure, which need to be positioned in the height direction of the cross section of the ship body structure, coincide; The method comprises the steps of constructing an initial structure of a box-type ship body, wherein the initial structure comprises a cabin body, a first reinforcing plate and a second reinforcing plate are symmetrically arranged in the inner cabin about a middle longitudinal section of the cabin body, the first reinforcing plate and the second reinforcing plate extend along the longitudinal direction of the cabin body and divide the inner cabin into a left cabin, a middle cabin and a right cabin which are sequentially arranged along the transverse direction, a first inner bottom plate is arranged in the left cabin, the left cabin is divided into an upper left empty cabin area and a lower left ballast cabin area, a second inner bottom plate which is in mirror symmetry with the first inner bottom plate is arranged in the right cabin, the right cabin is divided into an upper right empty cabin area and a lower right ballast cabin area, at least one first reinforcing piece is arranged in the middle cabin along the longitudinal direction, and a plurality of flat-bulb steels are arranged on corresponding wall boards of the cabin body, the first reinforcing plate, the second reinforcing plate, the first inner bottom plate and the second inner bottom plate along the longitudinal direction; based on design constraint conditions, the thicknesses of the first reinforcing plate, the second reinforcing plate, the first inner bottom plate, the second inner bottom plate, the first reinforcing piece and the walls of the cabin body are cooperatively adjusted, and the specifications and the arrangement parameters of the flat bulb steel and the first reinforcing piece are calculated in an iterative manner, so that the initial structural model simultaneously meets the constraint of the cross section moment of inertia and the constraint of the neutral axis position; And outputting the final structural size and arrangement scheme meeting the design constraint condition.

Description

Box-shaped ship body structure and design method Technical Field The application relates to the technical field of deck transport vessels, in particular to a box-shaped hull structure and a design method. Background The light weight design of the ship can promote the economical efficiency and the environmental protection of the ship, especially for wide deck ships such as deck transport ship, the weight of the ship body can be directly converted into cargo income or the fuel consumption can be reduced. In the related art, the hull is of a hollow beam structure, and in order to improve structural strength, the gravity center is designed to ensure the strength of an upper deck and an adjacent structure thereof so as to improve bending resistance, but the problems of light weight and poor economy exist. Disclosure of Invention The embodiment of the application provides a box-type ship body structure and a design method. In a first aspect, the present application proposes a box hull structure comprising: the cabin body extends longitudinally and is provided with an inner cabin; the first reinforcing plate is arranged in the inner cabin and extends longitudinally, and two ends of the first reinforcing plate in the height direction are respectively connected with the top wall and the bottom wall of the inner cabin; The second reinforcing plate is arranged in the inner cabin and extends longitudinally, is transversely spaced from the first reinforcing plate and is symmetrically arranged along the middle longitudinal section of the cabin body; the first reinforcing plate and the second reinforcing plate divide the inner cabin into a left cabin, a middle cabin and a right cabin which are sequentially distributed along the transverse direction; The central axis of the cross-sectional structure of the cabin is located at the geometrical center line of the cross-sectional structure of the cabin in the height direction. In some embodiments, a first inner floor is disposed within the left tank, the first inner floor extending in a lateral direction and a longitudinal direction of the left tank, respectively, to divide the left tank into a left void space and a left ballast space, the left void space being located at an upper surface of the first inner floor, the left ballast space being located at a lower surface of the first inner floor; A second inner bottom plate is arranged in the right cabin and extends along the transverse direction and the longitudinal direction of the right cabin respectively so as to divide the right cabin into a right empty cabin area and a right ballast cabin area, wherein the right empty cabin area is positioned on the upper surface of the second inner bottom plate, and the right ballast cabin area is positioned on the lower surface of the second inner bottom plate; the second inner bottom plate and the first inner bottom plate are arranged in mirror symmetry along the middle longitudinal section. In some embodiments, the inner wall of the middle cabin corresponding to the height direction is provided with a first reinforcing member extending along the longitudinal direction, the cross section of the first reinforcing member is T-shaped, and the small end of the first reinforcing member is connected with the inner wall of the middle cabin corresponding to the height direction; Wherein, the setting position of first reinforcement corresponds with the median longitudinal section. In some embodiments, the cabin comprises an upper deck, a lower bottom plate, a port side shell plate and a starboard side shell plate, wherein the upper deck and the lower bottom plate are arranged at intervals and opposite to each other along the height direction, the port side shell plate and the starboard side shell plate are arranged at intervals and opposite to each other along the transverse direction, and two ends of the port side shell plate along the height direction are respectively connected with the upper deck and the lower bottom plate, and two ends of the starboard side shell plate along the height direction are respectively connected with the upper deck and the lower bottom plate; Two ends of the first reinforcing plate in the height direction are respectively connected with the upper deck and the lower bottom plate and are enclosed with the port side shell plate to form a left cabin; Two ends of the second reinforcing plate along the height direction are respectively connected with the upper deck and the lower bottom plate and are enclosed with the starboard side shell plate to form a right cabin; the first reinforcing plate, the second reinforcing plate and an upper deck and a lower bottom plate which are arranged between the first reinforcing plate and the second reinforcing plate are enclosed together to form a middle cabin. In some embodiments, the middle compartment is further provided with an intra-compartment channel extending longitudinally; the in-cabin channel is arranged adjacent to the left