Hoisting deformation control method for large-opening straight cavity structure block

Abstract

The invention provides a hoisting deformation control method for a large-opening straight cavity structure block, comprising the following steps of: S1, calculating the weight and the gravity center of the large-opening straight cavity block, and carrying out hoisting point configuration and calculation of the length and the included angle of a steel wire rope in combination with gantry crane equipment parameters; S2, designing a lifter according to the hoisting points and the overall weight; S3, according to the opening structure characteristics of different positions of the large-opening straight cavity structure block, performing reinforcing arrangement on the large-opening straight cavity structure block in combination with the hoisting points and stress distribution of the hoisting points; S4, constructing an overall finite element model comprising the lifter and the reinforced large-opening straight cavity structure block according to a block lifter arrangement diagram, and performing finite element analysis and calculation to check the overall strength, the local strength and the deformation condition; and S5, reinforcing and correcting the steps S2 and S3 according to finite element calculation and checking results, and checking again until the requirements are met. Compared with the prior art, the deformation during hoisting can be effectively controlled, so that the construction precision requirement is met.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a hoisting deformation control method for a general section of a large-opening flat cavity structure. Background technique [0002] The general structure of multi-layer deck with sides is special because it has the following characteristics: 1. The surface of the upper deck is straight; 2. The middle part has a large cavity loading compartment structure with a large opening area; it is also called "large opening flat". The general section of the straight cavity structure”, this structure is weak in rigidity, large in size, heavy in weight, and requires high construction precision. The deck is easily deformed during hoisting, and additional reinforcement is required to enhance the structural rigidity and ensure the accuracy of the deck. The usual strengthening method is: according to experience, vertical supports are set in the flat cavity structure to connect up ...

AI Technical Summary

Problems solved by technology

The usual strengthening method is: according to experience, vertical supports are set in the flat cavity structure to connect up and down. However, through finite element hoisting analysis and calculation, it is found that wave deformation occurs in the cavity area, and the maximum deformation of the deck reaches 17mm. The arching deformation of the deck is 10mm, which cannot meet the production and construction accuracy requirements

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