Novel pillar structure for roll-on roll-off ship

Abstract

The invention provides a novel supporting column structure for a roll-on roll-off ship. The novel supporting column structure comprises a supporting column and a deck strong cross beam, wherein the supporting column vertically penetrates through and is connected to a deck of a ship body; the supporting column comprises a supporting column web plate and two supporting column face plates, and the supporting column face plates are perpendicularly fixed to the two sides of the supporting column web plate; a through hole is formed in the supporting column web plate, the deck reinforcing cross beam is arranged in the width direction of the ship body and supported below the deck, and the deck reinforcing cross beam is partially arranged in the through hole in a penetrating mode. According to the novel supporting column structure for the roll-on-roll-off ship, the restraining effect of a deck reinforcing cross beam on the supporting column can be reduced, stress distribution at the joint of the supporting column and a deck is improved, and fatigue cracks are prevented from being generated.

Description

technical field [0001] The invention relates to the field of ro-ro ship props, in particular to a novel prop structure for ro-ro ships. Background technique [0002] For ro-ro ships, based on the needs of loading vehicles, the vehicle cabin area must be unimpeded, and there are no brackets between the deck beams and side ribs and pillars to ensure the clear space for vehicles to pass. The size of deck beams and longitudinal girders is limited by the clear height between decks, usually 1 to 2 rows of pillars are set in the cargo hold to reduce the deformation of the grillage. When the ship is in the rolling state, due to the asymmetry of wind and waves and other loads, a large lateral force will be generated on the lower part of the hull, while the upper part of the hull will be affected by the gravity of the cargo and the inertial force of the cargo due to the influence of acceleration such as rolling or heaving. Larger transverse forces are also generated, and the directio...

AI Technical Summary

Problems solved by technology

The finite element calculation results show that increasing the plate thickness can reduce the maximum stress, but the stress concentration point cannot be eliminated

[0004] In the existing pillar design, it is often necessary to add a very thick plate to meet the allowable stress requirements, the structural strength margin is small, and the stress concentration point cannot be eliminated, which is prone to fatigue cracks

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