半潜式超大型浮式结构水动力系数研究

发布时间：2018-08-12 07:36

【摘要】：以半潜式超大型浮式结构在动力响应分析中的各水动力系数为研究对象,经理论推导得到D’Alembert动力学方程中的移动式海上基地(MOB)单模块运动的结构质量、结构附加质量、静恢复力系数的简易计算公式。以MOB的"三模块模型"为例,研究其在6级海况浪向角为0°~90°条件下,各模块的附加质量系数及静恢复力系数的历时规律,以实例MOB中的第1个模块为代表展示了计算结果,并统计其最大值与文献资料中的结果进行对比。结果表明:运用本理论公式计算的结果与文献中所得结果相似,可验证本理论公式的正确性、可行性与合理性,为求解半潜式超大型浮式结构模块动力响应位移及转角提供简便的方法。
[Abstract]:Taking the hydrodynamic coefficients of semi-submersible super-large floating structures in dynamic response analysis as the object of study, the structure mass and the additional mass of the (MOB) single module motion of the mobile offshore base in the D'Alembert dynamic equation are obtained by theoretical derivation. A simple formula for calculating static restoring force coefficient. Taking the "three-module model" of MOB as an example, this paper studies the diachronic law of the additional mass coefficient and static restoring force coefficient of each module under the condition that the wave direction angle of 6 grade sea condition is 0 掳~ 90 掳. The first module in MOB is taken as an example to show the calculation results. The maximum value is compared with the results in the literature. The results show that the calculated results of this formula are similar to those obtained in the literature, which can verify the correctness, feasibility and rationality of the theoretical formula. It provides a simple method to solve the dynamic response displacement and rotation angle of semi-submersible superlarge floating structure module.
【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);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】：P75;P731.2

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