LNG ship engine room upper portion flat straight region multi-segment connecting construction type construction method

Abstract

The invention discloses an LNG ship engine room upper portion flat straight region multi-segment connecting construction type construction method and belongs to the technical field of ship construction. The construction method includes the steps of bottom board lofting manufacture, line drawing region division of a construction platform, molding bed arrangement, bottom board laying, bottom board gap location conducted by gap clamping pieces, bottom board line drawing, segmental construction, border trimming and the like. The construction method is used for constructing six segments in an engine room upper portion flat straight region, the six segments share one construction platform, line drawing and construction are conducted at the same time, the accumulative errors generated in the construction process of the LNG ship engine room upper portion flat straight region are reduced, it is guaranteed that the relative positions among the six segments are accurately positioned, and following lifting is convenient.

Description

technical field [0001] The invention belongs to the technical field of ship building, and in particular relates to a multi-segment continuous building method for the straight area above the engine room of an LNG ship. Background technique [0002] During the construction of large ships, the ship is mainly divided into multiple sections, and then constructed in sections. After the construction of each section is completed, each section is assembled. Since there are many processes in the production process of segmented construction, the accumulated errors between segments are unavoidable. Accumulated errors will lead to increased construction costs and low construction efficiency, mainly manifested in the following three points: [0003] First, the accumulated errors cause secondary trimming of the processing groove, resulting in a large amount of labor consumption and poor welding quality. Since the segmented processing grooves are all completed by the machine during the pro...

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Problems solved by technology

[0004] Second, the accumulation of errors causes the secondary positioning of the segmented general group, resulting in the consumption of crane resources and supporting human kinetic energy. The segmental secondary positioning refers to the first positioning, because the joint does not meet the requirements and needs to be cut. positioning again

[0005] Third, accumulative errors caused the segmental outfitting to be unable to be pre-installed before the general assembly. Subsequent installation required the consumption of crane resources and the creation of special process holes for installation.

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