自升式移动平台结构动力响应研究

摘要

介绍了自升式移动平台动力响应模型建模的关键技术,并详细论述了动力响应求解的3种方法，单自由度方法、频域分析方法和时域分析方法；并以某桁架式桩腿自升式平台为例，计算运动惯性力及动力放大系数，对3种方法计算结果进行了比较。%The key technique of dynamic Analysis modeling for jack-up units is introduced and dynamic response analysis methods including SDOF approach, frequency domain and time domain approach are detailed in this paper. As an example, a jack-up with lattice legs is analyzed by FEA method. Inertial forces and DAF are calculated and compared among the three approaches.