Finite Element Analysis of the Local Strength of the Insertion Sleeve Structure for the Lifting Frame of Long Span Jacket

The lifting of the long span “8 + 4” leg split jacket requires the use of a specific lifting frame, where the local structure of the lifting frame insertion sleeve is the key part of the lifting, and it is extremely necessary to calculate and analyze it. This study focuses on a large span “8 + 4” leg jacket and its lifting frame structure in China. A lifting model of the “8 + 4” leg jacket was established using SACS software and its overall calculation and analysis were conducted. However, due to the limited computing power of SACS software for local structures, this study extracts relevant boundary conditions of the target local structure of the model based on the overall calculation and analysis of SACS, and combine ABAQUS to model, calculate, and analyze the local structure of the insertion sleeve, in order to provide reference for the engineering site.