Method for designing overall-width flat-inner-bottom liquid cargo ship

Abstract

The invention discloses a method for designing an overall-width flat-inner-bottom liquid cargo ship, belongs to the technical field of shipbuilding, and relates to a structural design method of an inner bottom in a double-bottom ship and a bottom side tank area of a bilge area. The method comprises the steps that a flat outer bottom, the bilge area, a side, a bottom side tank cantboard, an inner shell and a flat inner bottom are parallelly arranged at the bottom of the ship, the flat outer bottom is connected to the side through the bilge area, the flat inner bottom is connected to the bilge area or the side through an extension flat inner bottom, and the flat inner bottom is connected to the inner shell through the bottom side tank cantboard. According to the method for designing the overall-width flat-inner-bottom liquid cargo ship, the flat inner bottom is connected to the side through the extension flat inner bottom arranged in the bottom side tank, so that the flat inner bottom and an extended bottom area form a void space, the weight of ballast water for the ship reaches or is close to a minimum value of a dedicated ballast tank required by the MARPOL convention, so that energy consumption is reduced, and the purpose of energy conservation is achieved. Because the flat inner bottom serving as the bottom of the ballast tank is more beneficial for removing sediment, and theusing convenience is improved; and the structural continuity of the flat inner bottom can better transmit load, stress concentration is reduced, and the structural strength is improved.

Description

technical field [0001] The invention relates to the technical field of ship construction, and relates to a structure design method for the inner bottom and bilge bottom side tank areas of a double bottom ship. Background technique [0002] According to IACS CSR Specification Chapter 1 Section 1" image 3 "Typical arrangement of double hull oil tankers", the existing design of ships with horizontal double bottom adopts such as figure 1 , 2 and the design shown in 3, the flat outsole 1 and the flat insole 3 are arranged in parallel; in figure 1 , the flat insole 3 does not extend to the side 7 or the bilge 2 . exist figure 2 , the flat insole 3 does not extend to the side 7 or the bilge 2 . The problem with this design is that in order to meet certain functional requirements, a connection design is used between the full-width flat inner bottom 3 and the side 7 or bilge 2 in the ship design, such as Figure 4 , 5 , cannot be fully applied figure 1 , 2 The connection...

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Problems solved by technology

[0003] Aiming at the problem that the existing design cannot fully solve the energy-saving problems of anti-sediment and minimum ballast water in special ballast tanks, the present invention designs a full-width flat inner bottom liquid cargo ship design method, and its purpose is to ensure that oil tankers meet the requirements of the MARPOL Convention Under the premise of the minimum ballast draft of the special ballast tank, it is beneficial to remove the sediment in the ballast tank, reduce energy consumption, and achieve the purpose of energy saving

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