海洋的环境载荷复杂多变，而海洋的坏境工况又决定着船舶在海上的运动和受力情况。因此准确求解出波浪载荷，判断船舶在其整个生命周期内能否具有足够的抵抗波浪载荷的能力而不发生结构破坏，具有十分重要的意义。本文研究的对象海洋核动力平台平均寿命40年，长期定位于海上对结构强度提出了更高的要求，故本文基于大型水动力软件WASIM，通过时域下的线性和非线性计算，结合CCS规范计算结果，分析海洋核动力平台的波浪载荷特性，并完成全船结构强度校核。研究发现，通过非线性算法计算能更加明显的体现中拱和中垂的实际情况，此外，目标船舶在斜浪下易发生弯扭耦合的情况，比顺浪和迎浪情况下更危险，同时预报出危险剖面的位置，为船舶结构设计者提供参考。
The environmental load of the ocean is complex and changeable, and the environmental conditions of the ocean also determine the movement and force of the ship at sea. Therefore, it is of great significance to accurately solve the wave load and determine whether the ship has enough ability to resist the wave load in its entire life cycle without structural damage. The object of this paper, marine nuclear power platform which average life expectancy is 40 years, and long-term positioning at sea has put forward higher requirements for structural strength of the ship. Consequently, based on the large-scale hydrodynamic software WASIM, this paper, through the linear and nonlinear calculation in time domain, analyzes the wave load characteristics of the marine nuclear power platform in conjunction with the calculation results of CCS specification and completes the structural strength check of the whole ship. It is found that the actual situation of hogging and sagging can be more obvious through the calculation of nonlinear algorithm. In addition, the target ship is prone to have bending-torsional coupling under oblique waves, which is more dangerous than the situation of following sea and waves. Meanwhile, the location of dangerous section is predicted, which provides a reference for designers of ship structures.
2019,41(10): 134-138 收稿日期：2017-10-23
DOI：10.3404/j.issn.1672-7649.2019.10.026
分类号：TV743
作者简介：端木晚露(1990-),女,助理工程师,研究方向为船舶与海洋工程
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