固定石油平台冰激振动的时域与频域响应  

ICE INDUCED VIBRATIONS OF OFFSHORE FIXED PLATFORMS IN TIME AND FREQUENCY DOMAINS

作　　者：段梦兰[1,2] 吴永宁[1,2] 高照杰[1,2] 

机构地区：[1]中国船级社总部 [2]南京水利科学研究院

出　　处：《机械强度》1999年第1期14-17,共4页Journal of Mechanical Strength

基　　金：海洋石油总公司八五重点攻关项目;中国博士后科学基金;中国科学院八五重大研究的资助

摘　　要：从时域和频域两个方面考察了海洋石油固定平台的冰激位移响应，分析了冰的特性、冰力方向和平台结构型式三者与冰激位移响应的关系，得到冰的破碎频率和平台固有频率是决定结构振动程度的两个主要因素这一重要结论，为平台抗冰和结构设计提供了有力的计算依据。Ice induced displacement responses of offshore fixed platforms are investigated in both time domain and frequency domain.The relationships of ice induced displacement responses with ice characteristics,ice directions and structural types of platforms are analyzed and determined. And an important conclusion is obtained for the first time that ice breaking frequency and the natural frequency of the first mode of the platform are the two main factors which dominate the amplitude of vibration.The work in this paper offers a firm basis for both operation and design of platforms against ice loading.

关 键 词：固定石油平台 位移响应 海冰 频率 结构振动 

分 类 号：TE951[石油与天然气工程—石油机械设备] O327[理学—一般力学与力学基础]