Natural frequency and vibration analysis of jacket type foundation for offshore wind power

[摘要] There are various types of foundation structure for offshore wind power, engineers may assess the condition of ocean at wind farm, and arrange the transportation, installation of each structure members, furthermore, considering the ability of manufacture steel structure as well, then make an optimum design. To design jacket offshore structure, unlike onshore cases, offshore structure also need to estimate the wave excitation effect. The aim of this paper is to study the difference of natural frequency between different kinds of structural stiffness and discuss the effect of different setting of boundary condition during analysis, besides, compare this value with the natural frequency of sea wave, in order to avoid the resonance effect. In this paper, the finite element analysis software ABAQUS is used to model and analyze the natural vibration behavior of the jacket structure.

[发布机构] Marine Industrial Department, Ship and Ocean Industries R and D Center, New Taipei City, Taiwan^1

[学科分类] 计算机科学（综合）

[关键词] Finite element analysis software;Foundation structures;Jacket offshore structures;Jacket structures;Natural vibration;Off-shore wind power;Resonance effect;Structural stiffness