Very large crude carrier with no swash bulkheads and no cross braces

Abstract

The invention discloses a very large crude carrier (VLCC) with no swash bulkheads and no cross braces, and belongs to the technical field of shipbuilding. The VLCC comprises a double-bottom structureand cargo oil tanks, wherein an inner bottom plate is arranged above a ship bottom plate; a deck is arranged above the inner bottom plate; a plurality of longitudinal bulkheads and a plurality of transverse bulkheads are arranged between the inner bottom plate and the deck; each of the longitudinal bulkheads is provided with a corresponding watertight longitudinal girder at the lower part; the plurality of cargo oil tanks comprise a plurality of middle cargo tanks and a plurality of side cargo tanks; the middle cargo tanks are arranged at the middle of the upper end surface of the inner bottomplate along the longitudinal direction of a hull; the length of the middle cargo tanks is much greater than the width of the middle cargo tanks; a part of the middle cargo tanks and a part of the side cargo tanks are provided with reinforcing frameworks; the longitudinal bulkheads are provided with transverse perforated plates at the position of the reinforcing frameworks; the plurality of side cargo tanks are arranged in two rows and separately arranged on two sides of the middle cargo tanks; and the ratio of the length of each of the side cargo tanks to the length of the VLCC is less than 0.13. Through the rearrangement of the cargo oil tanks, the VLCC with no swash bulkheads and no cross braces provided by the invention simplifies the structural design and saves a part of manufacturingtechniques.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a very large crude oil carrier without swash bulkheads and without cross braces. Background technique [0002] At present, the unique characteristics of the traditional VLCC structural arrangement are (such as figure 1 shown): There are 2 longitudinal bulkheads, and cross braces are arranged between the longitudinal bulkheads to reduce the span of the vertical girders of the longitudinal bulkheads and improve the overall bearing capacity of the transverse strong frame. At the same time, the VLCC The oil tank is long, and the setting of cross braces is also beneficial to reduce the lateral deformation of the cargo tank; in addition, the length of a single cargo oil tank in a traditional very large crude oil carrier is about 50m, and the ratio of the length of the cargo oil tank to the length of the ship exceeds 0.15. The middle part of the oil tank is provided with a transve...

AI Technical Summary

Problems solved by technology

The setting of the wash bulkhead and the cross brace increases the workload of the shipyard in terms of technology. At the same time, the problem of stress concentration at the toe end of the wash bulkhead horizontal girder and the connection form of the cross brace and the longitudinal bulkhead horizontal girder must also be considered (such as figure 2 shown), increasing the complexity of the structural design

Images