摘要
根据 JZ2 0 - 2 MUQ平台结构的冰振反应特点和平台结构实际允许的空间 ,提出了粘弹性耗能器在平台结构中的设置方式 ;其次分析了不同方式设置粘弹性耗能器的平台结构动力特性 ,特别是耗能器给平台结构附加的振型阻尼比 ;最后通过大量的数值模拟计算 ,分析了不同海冰设计条件。
WT5”BZ]In this paper, the settings of viscoelastic energy dissipators on the JZ20 2MUQ Platform Structure are firstly put forward according to the characteristics of ice induced vibration and the utilized space of the platform structure. Then, the dynamic performances of the platform structure with various settings of viscoelastic energy dissipators are analyzed, especially the damping ratio of the structure appended by energy dissipators. Finally, through large numbers of numerical simulation calculations, the vibration suppressed effects of viscous energy dissipators on the platform structure are analyzed considering the following ice load cases: various ice design conditions, ice moving directions, different water levels and different ice destruction types.
出处
《海洋工程》
CSCD
2000年第3期9-14,共6页
The Ocean Engineering
基金
国家自然科学基金重大项目!( 5 9895 410 )
中国海洋石油渤海公司资助项目
关键词
海洋平台结构
粘弹性耗能器
冰振控制
钻井平台
offshore platform structure
viscoelastic energy dissipators
ice induced vibration control
