渤海JZ9-3WHPB平台冰激振动测量与分析  

The measurement and analysis of ice induced vibration of JZ9-3WHPB oil platform in Bohai Sea

作　　者：兰志刚 赵英年[2] 国建凤[2] 周振涛 邢健 白刚[2] 鲁红革 李辉辉 

机构地区：[1]中海油能源发展股份总公司北京分公司,北京100027 [2]中国海洋石油总公司,北京100010 [3]中海石油有限公司天津分公司,天津300452

出　　处：《中国工程科学》2011年第5期79-87,共9页Strategic Study of CAE

基　　金：海洋石油总公司科技发展项目(C/KJFJDSY003-2008)

摘　　要：为掌握JZ9-3WHPB平台的动力特性,根据该平台结构特点设计安装了具有远程控制功能的平台冰激振动监测系统,对振动信号实施实时监测和记录。利用短时傅里叶变换对振动信号进行分析,研究结构振动时变特征和模态频率特征。通过比较上下甲板振动信号的相位关系以及信号的滤波处理,分析所测得振动模态的振型特点。在对振动最大值、振动持续时间以及平台水域潮流潮位进行统计分析的基础上,结合平台结构设计,分析了平台的抗冰设计缺陷,给出了防冰建议。Based on the structure and layout of the untended JZ9-3WHPB platform,remote controllable ice induced vibration monitoring system was designed and installed on JZ9-3WHPB platform to record the vibration of the structure so as to learn its dynamic characteristics.Short time Fourier transform was employed to study the temporal variations and mode frequencies of the vibration.Vibration mode was analyzed by comparison of the phase difference between the vibrations of the upper and lower deck and applying bandpass filtering to the signal.Based on the count and analysis of the maximum amplitude and duration of the vibrations,tide and current of the water,and the structure of the platform,the defects of anti-ice induced vibration structure were analyzed,and ice resistant proposals were presented.

关 键 词：海洋平台 渤海海冰 冰激振动 振动加速度 短时傅里叶分析 

分 类 号：P71[天文地球—海洋科学]