半潜式超大浮体连接器动力特性的一种时间序列分析方法  

A time sequence analysis method for predicting connector loads in a semi-submersible Very Large Floating Structure

作　　者：王璞[1] 余澜[1] 李润培[1] 

机构地区：[1]上海交通大学船舶与海洋工程学院,上海200030

出　　处：《海洋工程》2002年第3期9-13,共5页The Ocean Engineering

基　　金：国家自然科学基金重点资助项目 (5 0 0 3 90 10 )

摘　　要：根据刚性模块弹性连接器 (RMFC)假设研究由 3个模块连接而成的半潜式超大浮体MobileOffshoreBase(MOB)的波浪载荷动力响应。模块和连接器动力响应根据时间序列法计算 ,这种方法包括海况模拟 ,波浪载荷计算和结构响应计算三个主要部分。通过对结构的适当简化 ,根据Airy波理论 ,Morrison公式以及流体中的结构运动方程、弹性连接器变形方程 ,计算求得MOB在不规则海况下的动力响应 ,并将其与相关文献中的结果进行比较 。A study on the linear wave induced response of a mobile offshore base, which consists of 3 semi submersible modules, is presented in this paper based on the assumption of Rigid Module Flexible Connector. Each module has a size of 252 m in length, 150 m in width and 81m in height, and is flexibly connected with others at the deck. The wave-induced response is determined on the basis of time sequence method, which is made up of three parts -- Sea State Representation, Fluid Loading and Structural Response Calculation. By use of the Airy wave theory, Morrison equation and structural motion equation in wave, the response analysis of MOB in irregular seas is carried out and compared with the results in the correlative literatures. Though the calculation is only in the Zero Degree Heading condition, it shows that the method mentioned in the paper has a good accuracy in comparison with the results of other researches.

关 键 词：时间序列分析方法 半潜式超大浮体 刚性模块弹性连接器 波浪载荷 动力响应 RMFC 

分 类 号：P752[天文地球—海洋科学]