【摘要】 海洋平台及FPSO存在遭受守护船撞击的可能性,由此产生的结构损伤会影响到平台及FPSO的安全,因此在结构设计时需要考虑其抗撞性能。守护船与平台及FPSO的碰撞决定着平台及FPSO结构的合理性和经济性,目前我国尚没有相关的碰撞场景规范,设计时多采用国外有关规范。碰撞场景取决于海况条件和操作规定,而我国的海况与国外并不相同,所采用的操作规定也有差别,因此完全套用国外规范不尽合理。以一艘5000吨级守护船为研究对象,利用水动力学计算方法,研究守护船与导管架平台及FPSO的最大碰撞速度。选取我国近海油气田所在的典型海洋环境条件,探讨了不同水深、波浪条件以及碰撞方向对最大碰撞速度的影响。研究结果表明,守护船侧向撞击FPSO的最大碰撞速度最大,在实际工程作业中须注意此情景。更多还原

【Abstract】 There is a potential threat that offshore platform and FPSO suffer from collisions with supply vessels,resulting in severe structural damage and adverse effects on platform and FPSO production safety.Therefore,more attentions need to be paid to platform and FPSO crashworthiness in the design stage.The collision scenario between supply vessels and offshore platforms directly determine the rationality and economy of the designed structures.At present,China lacks of relevant collision norms,and generally adopts foreign relevant specifications instead.Nevertheless,it is inappropriate to use directly the foreign standards considering the different sea conditions and userdependent operational requirements,which account for the definitions of collision scenarios during design.In this paper,a 5 000-ton supply vessel is chosen as the object and investigated with hydrodynamic analysis to estimate the max impact velocity.Under typical marine conditions of Chinese offshore oil and gas fields,the effects on the maximum impact velocity of different water depths,wave conditions and collision directions are investigated.The results show that the max impact velocity occurs in supply vessel-FPSO side collision scenario.Thus this scenario should be paid the most attention.更多还原