针对新型深水立柱式Spar钻呆储运平台(SDPSO)的结构特点进行极限强度可靠性研究,验证波浪弯矩年极值条件下其中间舱特殊储油系统结构的安全性。采用SESAM/Wadam软件对SDPSO平台进行水动力计算,利用序列统计法得到年极值分布;利用ABAQUS软件和改进的Rosenblueth法进行SDPSO平台极限强度计算,得到极限承载能力的概率分布。平台结构极限强度具有较高的安全水平,为深海立柱式海洋平台设计提供了依据和参考。 Based on the structural characteristics of the new deepwater column Spar drilling and storage platform (SDPSO), the reliability of ultimate strength was studied to verify the safety of the structure of the special oil storage system in the mid-tank during the annual extreme value of the wave moment. The SESAM / Wadam software was used to calculate the hydrodynamic power of the SDPSO platform, and the annual extreme distribution was obtained by using the sequence statistics method. The ultimate strength of the SDPSO platform was calculated by using the ABAQUS software and the improved Rosenblueth method to obtain the ultimate load capacity. The ultimate strength of the platform structure has a high level of safety, which provides the basis and reference for the design of deep-sea column-type offshore platform.