Investigation of the Accuracy of 'Time Snapshot' Based Structural Analysis and Design of Jacket Type Platforms

摘要

The focus of this article is the evaluation of the traditional method of time domain analysis regarding its assumption that the maximum stresses of the structural members appear at the same time and specifically, at the time of the base shear maximization. Two procedures are followed for the analysis of identical offshore jacket type models in order to gain adequate data for performing comparisons between them. The first, is the generally used method mentioned above, while the second examines every member independently during time domain simulation and reveals the maximum values of their internal forces and moments whenever they appear. Various comparisons between the two groups of results are performed, and the final conclusions are presented.