Wide-body double-side skin and double-bottom ship based on the large opening of the floor plate in the ballast tank

Abstract

The invention discloses a wide-body double hull board side double bottom ship based on large openings of inner rib plates in a ballast tank. A board side and a bottom comprise a double-shell shell; rib plates of vertical structures are spaced from one another between an inner shell and an outer shell of the board side. When the distance A of the inner shell (1) and the outer shell (2) is greater than 8 percent of width B, the area of openings which are vertically spaced from one another in the rib plates is 25 percent greater than the sectional area of a three-dimensional structure defined by the inner shell (1), the outer shell (2) and upper and lower adjacent horizontal girders and perpendicular to the length direction. The ship has the advantages that the welding workload and the lightship weight are effectively reduced, the steel utilization rate is improved, the load of liquid cargoes and waves is effectively transferred through arrangement of transverse and vertical stiffeners and the radius size of vertical and transverse connecting arc, the welding area is effectively increased and the stress is reduced by adopting 25-degree snip on end parts of the transverse and vertical stiffeners, and the requirement on structural strength at regions with the large openings can be met through rational arrangement.

Description

technical field [0001] The present invention relates to ship design, more particularly, to the improvement of floor plates in ballast tanks in wide-bodied double-side skin ships. Background technique [0002] Such as figure 2 As shown, the general structure of a wide-body double-side skin in cross section of a wide-body double-side ship type, a ship with wide-body double-side skin, double bottom and inclined inner and outer bottoms, more specifically, its double hull width C is greater than 8% of the ship's width B is less than half of the ship's width; the inclined inner bottom 19 and the inclined outer bottom 20 are parallel to each other, and the included angle A with the horizontal base line is 10°<A<45°. [0003] The present invention is mainly aimed at figure 2 Improvements made to ships shown in , especially for figure 2 Improvements are made when the distance A between the double hulls shown (the distance between the inner hull 1 and the outer hull 2) is gre...

AI Technical Summary

Problems solved by technology

Although this structure meets the requirements of the code and is convenient for strength assessment, it has the problem of large light weight

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