摘要
气隙性能是半潜式平台设计中一个关键问题,是衡量平台甲板是否发生抨击和越浪的一个重要参数.本文针对一个安装在南中国海中的一座半潜式平台上的浪高仪在一年中所测得的气隙数据样本,进行了较为全面的时域分析、频域分析以及统计分析计算.对时历数据进行处理得到能量谱密度曲线,表明气隙能量基本集中在波频范围,同时提出适合实测数据的高低频分离方法.通过对概率密度和累积分布曲线的拟合,发现在不同时期极值出现的概率很接近,表示气隙性能比较稳定,由此可对气隙极值出现的概率进行初步的预测.
The air gap response of the semi-submersible platform is generally of considerable interest. In order to study the air gap performance of a semi- submersible, a statistical analysis is carried out based on the field measurement data of a semi-submersible in the South China Sea. The frequency-domain and wavelet analysis shows the energy concentration characteristics of the air gap. And the fitting curves of the air gap probability density and cumulative probability distribution show that the air gap performance of the platform is relatively stable in different months. The extreme value can also be predicted by the results of fitting parameters.
出处
《中国造船》
EI
CSCD
北大核心
2016年第A01期80-90,共11页
Shipbuilding of China
关键词
半潜式平台
气隙
长期实测
频域分析
统计分析
semi- submersible
air gap
long-term measurement
frequency
statistics.
