Dynamic analysis of shallow embedded jacket offshore structures under wave forces

Abstract

In this paper, the stress of temporary structures during the construction of offshore structures is analysed through the study of the temporary buried drilling platform. Firstly, The fluid flow is controlled by the modified RANS equation (the Reynolds-average equation) and Forchheimer saturation resistance model, the free surface is tracked by volume of fluid (VOF) method, and the κ–ε closed equation is solved. The finite element numerical simulation software is used to establish a multi-factor coupling calculation model of the stress of temporary buried offshore structures. The maximum wave force of temporary structures under different buried depths, different structural sizes, different load periods and amplitudes is simulated, and the stability of Long Yuan wind turbine pile foundation drilling platform under the maximum wave force is analyzed. The research results of this paper can be used for dynamic design and analysis of wave load conditions, structural design dimensions and load periods in the engineering design of embedded offshore structures in shallow water under wave loads, so as to calculate the wave load values of structures reasonably and provide concrete theoretical basis for the establishment of offshore systems.