冰区核电平台系泊设计及影响研究

Study on mooring design and impacts of nuclear power platform in ice zone

本文根据冰区浮式核电平台的主要功能及外部环境条件,确定平台的基本形式,并在此基础上进行了系泊系统的优化设计。与以往研究不同的是,考虑到冰区海洋的特殊性,除计算风、浪、流作用情况外,还运用Sdem软件构造了海冰离散单元模型,对海冰与海洋系泊结构物的相互作用过程进行了数值模拟。在此基础上,结合系泊分析软件ANSYS-AQWA的二次开发功能,对平台运动及其系泊系统进行了时域耦合分析,研究了平台在不同环境载荷作用下的运动响应;进行了系泊参数研究,分析一般规律,最终提出了一种满足规范要求且性能优良的系泊方案。研究结果表明:本文提出的冰区核电平台系泊系统可抵抗恶劣的环境影响;通过合理选择系泊缆数量、夹角、预张力大小及顶端倾角等系泊参数,可减小平台运动响应。

According to the main functions of the floating nuclear power platform and the external environ⁃mental conditions,the basic form of the platform was determined,and the optimal design of the mooring sys⁃tem was carried out.Different from previous studies,due to the particularity of the sea conditions,in addition to considering the effects of wind,wave and current,a discrete unit model of sea ice was constructed to simu⁃late the interaction process between sea ice and marine mooring structures with Sdem.On this basis,com⁃bined with the secondary development function of the mooring analysis software ANSYS-AQWA,the time do⁃main coupling analysis of the platform motion and its mooring system was carried out to study the motion re⁃sponse of the platform under different environmental loads.The mooring parameters were studied and the reg⁃ularities were analyzed.Finally,a mooring scheme that satisfied the requirements of the specification and had excellent performance was proposed.The research results show that the mooring system of the floating nucle⁃ar power platform can resist the effect of harsh environmental conditions.By choosing the mooring parameters reasonably,such as the number of mooring lines,the angle of the cable,the pre-tension and the tip angle,the motion response of the platform can be reduced.