移动式海上基地连接构件恶劣海况下水动力响应

发布时间：2018-05-07 23:06

本文选题：移动式海上基地 + 半潜式海洋平台　；参考：《石油勘探与开发》2016年06期

【摘要】：以移动式海上基地(MOB)作为研究对象,提出其柔性连接构件在恶劣海况下的动约束力简化计算方法,并采用该方法计算、分析了MOB连接构件动约束力随不同参数的变化规律。该算法采用修正后的Morison方程替代势流理论计算MOB所受波浪力,对目前常用的计算方法进行了简化。将该算法与基于势流理论算法的计算结果进行对比,验证了该算法的正确性与合理性。采用该算法计算了不同海况等级、波浪入射方向、连接构件刚度条件下的MOB柔性连接构件动约束力,结果表明:在x方向上动约束力随浪向角的增加而减小,在y、z方向上动约束力随浪向角的增加先增加后减小;海况等级越高连接构件动约束力越大;随着连接构件刚度的增加动约束力近乎线性递增;相同条件下不同连接构件受力较均匀。
[Abstract]:Taking mobile offshore base mob as the research object, a simplified calculation method of dynamic binding force for flexible connection members under adverse sea conditions is proposed. The variation of dynamic binding force of MOB connection members with different parameters is analyzed by using this method. In this algorithm, the modified Morison equation is used instead of the potential flow theory to calculate the wave force in MOB, and the commonly used calculation method is simplified. The correctness and rationality of the algorithm are verified by comparing the results of the algorithm with that based on the potential flow theory. The method is used to calculate the dynamic binding force of MOB flexible connection members under different sea conditions, wave incident direction and stiffness. The results show that the dynamic binding force decreases with the increase of wave angle in the x direction. The dynamic binding force firstly increases and then decreases with the increase of the wave angle in the yniz direction; the higher the sea condition grade, the greater the dynamic binding force of the connecting member; the more the stiffness of the connecting member increases, the more the dynamic binding force increases almost linearly Under the same conditions, the force of different connecting members is more uniform.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;高新船舶与深海开发装备协同创新中心;重庆交通大学河海学院;
【基金】：国家自然科学基金(51679166;51479133);国家自然科学基金创新研究群体科学基金(51321065) 交通运输部交通建设科技项目(2014328224040)
【分类号】：P751;P731.2

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