Ship flat ground construction method

A construction method and flat ground technology, applied to ships and other directions, can solve problems such as huge investment and increased construction costs, and achieve the effects of improving construction quality, reducing costs, and improving weld quality

Active Publication Date: 2022-07-29
宜昌一凡船舶设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Since the flat ground construction method was pioneered in South Korea in 2006, a number of domestic and foreign shipbuilding companies have adopted this method. The existing flat ground construction methods are equip

Method used

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  • Ship flat ground construction method

Examples

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Embodiment 1

[0065] This embodiment takes the Yangtze River 130m bulk carrier as an example to illustrate:

[0066] A method for building a ship on flat ground, comprising the following steps:

[0067] 1. For the hardened slope-level slipway, the slope ratio of the slope slipway is 100:1.5, and the slipway area is 25*180m.

[0068] The straightness error of the slipway is less than 1%, and the flatness error is less than 3mm. The hardened flat slipway is made of 30# reinforced concrete, and the bottom layer of the concrete is prefabricated with an anti-seepage layer, so that the bottom plate of the ship does not produce soda when welding on the slipway.

[0069] With such a 100:1.5 slope hardened slipway, the ship can be built by the flat construction method. The total length of the cargo hold of a 130m bulk carrier is 100m, and it is a flat-bottom, double-bottom and double-hulled ship.

[0070] 2. Assembling of the bottom of the ship: According to the plane size of the bottom of the ship...

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Abstract

A ship flat ground construction method comprises the steps that a slipway is built on the flat ground, a plurality of transverse grooves are formed in the plane of the slipway, and air bags are installed in the transverse grooves; welding of the bottom plate of the whole ship is completed in a fragmentation assembly welding mode; the center line of the bottom plate of the whole ship is calibrated by adopting a direct line pulling and marking method, and then the position line of each component is calibrated; welding of the inner bottom plate is completed by adopting a fragmentation assembly welding method, the inner bottom plate is connected with the double-layer bottom framework, and installation of the double-layer bottom is completed; when the inner bottom plate is assembled and welded, the shipway on the two sides of the inner bottom plate is assembled with the shipway on the left side and the shipway on the right side of the inner bottom plate; assembling, welding and painting the front bulkhead, the middle bulkhead and the rear bulkhead of the cargo hold while assembling the left and right side ultra-long blocks; the bow and the stern of the whole ship are manufactured in a segmented mode at the same time, then the whole ship is integrally folded to be formed, outfitting assembling is conducted, and finally the head segment and the tail segment are sequentially assembled; and main and auxiliary machines and the superstructure are hoisted on the ship. The shipbuilding construction period can be shortened, the shipbuilding cost is reduced, and the shipbuilding quality is improved.

Description

technical field [0001] The invention belongs to the field of shipbuilding methods, and particularly relates to a method for building ships on the ground. Background technique [0002] In recent years, there are several main construction methods in ship construction: overall construction, subsection construction, and total section construction. The overall construction method is a backward construction method, but there is still a large market for small and medium-sized shipyards. The segmented construction method is relatively common, but too small segments require high construction accuracy, the slipway cycle is relatively long, more lifting equipment and supporting equipment are required, and there are many circular seams after assembling to form a large total section. Circumferential seams still require a large number of welders to perform manual welding, and the welding quality needs to be improved. The total section construction method, due to the large weight of the ...

Claims

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Application Information

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IPC IPC(8): B63B73/00B63B73/10B63B73/20B63B73/43
CPCB63B73/00B63B73/43B63B73/10B63B73/20
Inventor 姚智衡姚奉
Owner 宜昌一凡船舶设计有限公司
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