Method for hoisting full-width total section of thin-walled structure

Abstract

The invention relates to a method for hoisting a full-width total section of a thin-walled structure. The method includes the following steps of firstly, calculating the weight and center of gravity of the full-width total section of the thin-walled structure, determining the number of hoisting points, and selecting the positions of the hoisting points; secondly, analyzing and calculating the stress conditions of each hoisting point, selecting slings and locks which meet the hoisting specifications, calculating the hoisting girth length of the full-width section of the thin-walled structure and the hoisting height of a crane, and calculating the required sling length; thirdly, manufacturing and installing a corner protector and a tongue and groove protector according to the line-type chamfered form of the full-width section of the thin-walled structure; and fourthly, making the slings selected in second step penetrate through the corner protector and the tongue and groove protector onthe two sides of the full-width total section of the thin-walled structure at the same time, and hanging the slings on hoisting rows or hoisting hooks of a hoisting device for hoisting operations. Byadopting the method, the distribution area of stress points of the hoisting points is large, the structural deformation caused by the hoisting of the total section is effectively controlled, and a large number of structural strengthening devices are omitted.

Description

technical field [0001] The invention relates to the technical field of general section hoisting of ship steel structures, in particular to a method for hoisting a full-width general section of a thin-walled structure. Background technique [0002] During the construction of small ships, regional shipbuilding technology is generally used, that is, the hull is divided into several general sections, and equipment, foundations, iron outfitting, etc. are installed in the general sections. Compared with large ships, small ships generally use thinner Wall hull structure, local structural strength is weak. The traditional hoisting method needs to install lifting points on the deck, and then a large number of reinforcements must be installed below the corresponding lifting points to ensure the safety of the hull hoisting. During hoisting, due to the thin deck, relying on the hull and reinforcement to withstand the hoisting gravity, there are certain safety hazards. After the hoisti...

AI Technical Summary

Problems solved by technology

Due to the thin deck plate during hoisting, relying on the hull and reinforcement to withstand the hoisting gravity, there are certain safety hazards

After the hoisting is completed, because after the hull is stressed, the parts with weaker local structural strength will be deformed to a certain extent, so the post-correction workload of the hull structure is also relatively large; at the same time, the disassembly and assembly work of strengthening the lifting points will also consume a lot of manpower and material resources

[0003] In recent years, a general section hoisting method using steel beam brackets has emerged. However, the steel beam tooling itself is heavy, and generally requires large-scale crane resources to cooperate with the operation, otherwise it will be detrimental to the integrity of the general section

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