Welding structure for hole pattern of aggregate penetration hole in ship bulkhead plate and supplementary plate

Abstract

The invention discloses a welding structure for a ship bulkhead plate aggregate hole and a matched supplementary plate. The welding structure for the ship bulkhead plate aggregate hole and the matched supplementary plate comprises a bulkhead plate and the supplementary plate. The aggregate penetration hole is formed in the bulkhead plate, the aggregate penetration hole and the supplementary plate are welded after an aggregate penetrates through the aggregate penetration hole to be assembled, a hole structure comprises a first arc, the first arc is connected with a first elliptic arc, the elliptic arc is connected with a second arc, the upper end of the second arc is connected with an upper semi-waist circle, the lower end of the upper semi-waist circle is connected with a straight line tangent to the upper semi-waist circle, the supplementary plate is provided with a third arc in the shape, the lower end of the third arc is connected with a second elliptic arc, the second elliptic arc is connected with a fourth arc, the other end of the fourth arc is connected with a fifth arc, the fifth arc is connected with a right angle, the other side of the right angle is connected with a sixth arc, and the sixth arc is tangent to the upper side of the supplementary plate. For the T-shaped aggregate for a ship, the operation requirement for improving the fatigue life of the ship is met through decreasing the stress concentration factor on the side of the hole; the stress concentration factor is decreased, so that the fatigue life of the connection of the supplementary plate and the hole parent material is prolonged; and the assembly is simple and the wide application is realized.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to an aggregate through-hole pattern of a bulkhead plate of a ship and a welded structure of a repair plate. Background technique [0002] In order to ensure the continuity of the longitudinal members in the ship, it is necessary to drill holes in the transverse members. There is a relatively serious stress concentration phenomenon at the edge of the hole, and the stress at the edge of the hole can be effectively reduced by adding a patch plate. At present, the traditional structure of opening holes and patching panels in use is mainly based on waist round openings and rectangular patching panels. This type of opening and supplementary plate has high stress at the edge of the hole, is prone to fatigue damage, and has a low service life. At present, with the development trend of super-large ships and the wide application of high-strength steel, the fatigue problem has been paid more ...

AI Technical Summary

Problems solved by technology

However, it is mainly for key-shaped openings. This type of opening has poor versatility and requires high process precision, so it is not universal. There is no reasonable solution for the currently widely used opening and patching plate opening.

At the same time, all kinds of new openings do not give much consideration to the stress concentration at the weld between the frame and the rib plate, and the weld is more prone to damage than the base metal

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