Offshore wind power turbine installation vessel (OWTI) is a key equipment to build offshore wind power farms. There are many operating conditions for such a ship with functions of propulsion, jack-up, carriage and lift. Stress distributions of the OWTI hull's platform and other key structures such as legs, pile shoe and jack houses are obtained with the help of the detailed finite element model. Mechanical properties are fully studied. Results of the study show that strength and stiffness of the hull's platform and other key structures meet the design requirements. The study of key structures can help us grasping structural characteristics and stress level of OWTI. That provides certain reference in design and making standards for OWTI.%海上风机吊装作业船是建设海上风电场的关键设备,具备自航、自升、运输、起重等功能,安装作业工况复杂.利用有限元软件对海上风机吊装船的船体平台和柱腿、桩靴、固桩架等关键结构的力学性能进行了较为全面的研究和分析.计算结果表明,船体和其他关键结构的强度与刚度均满足要求.研究工作有助于掌握和了解该船型的结构特点和各关键结构的应力水平,对结构设计和相应规范的制定有一定的参考价值.
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