Large ship superstructure hoisting method

Abstract

The invention provides a large ship superstructure hoisting method which is implemented through the following steps: 1, calculating the whole weight and gravity center of the superstructure, configuring a hoisting point according to gantry crane equipment parameters and calculating the length and included angle of steel wire ropes; 2, designing a hoisting ring according the hoisting point and the whole weight; 3, carrying out reinforcement arrangement on the superstructure according to the hoisting point and stress distribution thereof; 4, establishing finite element modeling, carrying out whole strength check through finite element strength calculation, establishing a whole reinforced superstructure finite element model comprising the hoisting ring in MSC.Patran simulation software according to a structural drawing, and checking the whole and local strength through calculation; 5, reinforcing and modifying the steps 2 and 3 according to finite element calculation and strength check results, and rechecking; and 6, hoisting. Compared with the prior art, the method provided by the invention has the advantages of fully meeting technical indexes, obviously shortening the dock period at the same time, greatly relieving the defects of a ship integral assembly field and steadily improving the annual ship building quantity.

Description

technical field [0001] The invention relates to a hoisting method for a superstructure of a large ship, which belongs to the technical field of superstructures of ships in transit. Background technique [0002] According to the introduction of Chinese invention patent ZL200710158987.X "Hanger and hoisting process for the overall hoisting of ship superstructure", "the overall hoisting of ship superstructure is an advanced technology in ship construction. With the improvement of the degree of pre-outfitting before hoisting of superstructure , the overall hoisting will undoubtedly expand the scope of operations on land before the superstructure is installed on the ship, improve labor productivity, shorten the ship construction cycle, and reduce shipbuilding costs. However, due to the limitations of shipyard equipment, site and hoisting design level, it is still limited to The scale is small and the rigidity of the superstructure is relatively strong. But the large-scale ship an...

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Problems solved by technology

[0003] In view of the above deficiencies, the technical problem to be solved by the present invention is to adapt to the difficult control and deformation of the center of gravity of the superstructure by rationally arranging the lifting points, reinforcing and controlling the length of the steel cable, and propose a new hoisting method for the superstructure of large ships