Analysis and research on the force process of pile leg insertion into the seabed for jack-up offshore platforms

Due to the stabilising and positioning role of the pile legs of jack-up offshore platforms, they offer a strong operational advantage for the exploration of oil and gas resources in offshore locations. Therefore, it is necessary to study the pile insertion process of the pile legs of jack-up offshore platforms. In this paper, we take the original land-based jack-up marine simulation platform of Zhejiang Ocean University as the research object, and use Patran&Nastran software to simulate the pile insertion process of its pile legs into the seabed and analyse the movement state of the pile legs. Through the Patran&Nastran software, the force analysis of the pile leg insertion process, it is concluded that the design maximum displacement value of the pile leg conforms to the specification, the machine power should be adjusted according to the length of the pile leg, and the pile leg of the selfelevating marine platform is safe.