Ship T-shaped bar through hole linear structure

Abstract

The invention relates to a ship T-shaped bar through hole linear structure. The ship T-shaped bar through hole linear structure is characterized in that a T-shaped bar through hole is provided with a left-right-symmetry structure; the line type of one single side sequentially includes an elliptical arc, a first arc, a second arc and a straight line which are sequentially connected; the long radius b of the elliptical arc is close to the inner side of the T-shaped bar through hole, and the short radius c of the elliptical arc is close to outer side of the T-shaped bar through hole; the whole T-shaped bar through hole is of an apple shape with the head facing downwardly. The ship T-shaped bar through hole linear structure has the advantages the hole is full and round, the through hole is welded with at least one edge of a T-shaped bar, part of the stress on the free edge of the through hole is transmitted through weld joints from the T-shaped bar, the other part of the stress on the free edge of the through hole is caused by plate deformation, stress testing and analysis prove that by the form of the elliptical arcs, the first arcs, the second arcs and the straight lines, fatigue limit brought by the stress of a plate is long, the theoretical service life of the plate is long, and high design safety is achieved.

Description

technical field [0001] The invention relates to a linear structure of a through hole of a T-shaped bar of a ship, and belongs to the technical field of the through-hole of a T-shaped bar of a ship. Background technique [0002] In the structural form of the ship, the form of the profile passing through the plate is generally adopted to realize the rigid frame of the hull. At least one side of the through hole and the T profile is connected by welding, and part of the stress on the free side of the through hole comes from the profile through the weld. Part of it is the stress caused by the deformation of the sheet. Such as Figure 1-Figure 2 shown. [0003] With the increasing size of the ship and the higher and higher requirements for the fatigue strength of the ship, the through hole of the existing T-shaped bar is relatively flat due to the limitation of the line itself, such as Figure 3-Figure 6 As shown, the shape of the opening is a combination of arc and straight li...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing ship T-shaped bar through-hole linear structure, the overall opening is relatively flat, and the form of arc-straight-line-arc-straight-arc is used, and the radius of the edge of the opening cannot be further improved. The smoothness of the enlarged opening is not enough, resulting in a large stress on the edge of the opening and the fatigue strength cannot be satisfied

Images