Double-phase stainless steel chemical ship bottom sectional final assembly and subsequent hoisting method

Abstract

The invention discloses a double-phase stainless steel chemical ship bottom sectional final assembly and a subsequent hoisting method, the method comprises the following steps of: S1, arranging a plurality of final assembly hanging rings on outer plates of bow and stern end surfaces of a bottom left port section and bottom right port section; S2, lifting the bottom left port section and the bottomright port section by a crane through the final assembly lifting rings, wherein the final assembly is carried out to form a full-width bottom final section; S3, arranging a carrying hanging ring on the inner bottom plate area made of a low-carbon steel material at the two lateral sides of the bottom final section; S4, simulating and calculating the stress and deformation of the bottom final section when the bottom final section is hoisted through a finite element method, wherein the stress is within the strength bearing range of the bottom final section, and the deformation meets the assemblyprecision of the bottom final section assembly, the crane is used for hoisting the bottom final section to be spliced with the front section and rear section of the ship through the carrying hangingring. The method has the advantages that the assembly of the bottom section is not polluted and the stainless steel material of the bottom plate is damaged.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a general assembly of duplex stainless steel chemical ship bottom sections and a subsequent hoisting method. Background technique [0002] The bottom section of the duplex stainless steel chemical ship is a longitudinal frame, the cargo tank area 100 of the inner bottom plate is made of duplex stainless steel, the ballast tank area 200 of the inner bottom plate is made of low carbon steel, and other components and outer plates are made of low carbon steel. According to the structural characteristics, the bottom section should adopt the front and rear assembly, and the lifting rings are set on the inner floor of the bottom section, which not only meets the structural strength requirements, but also facilitates the arrangement of the lifting rings. [0003] However, if this method is adopted, the lifting ring has to be set in the duplex stainless steel area of ​​th...

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Problems solved by technology

[0003] However, if this method is adopted, the lifting ring has to be set in the duplex stainless steel area of ​​the inner bottom plate, and the lifting ring is made of low carbon steel, and direct contact with the duplex stainless steel will cause serious pollution to it. Unavoidable damage caused by stainless steel materials

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