导管架式海洋平台阻尼隔振及减振技术研究  

RESEARCH ON DAMPING ISOLATION TO REDUCE VIBRATION AND VIBRATION CONTROL FOR OFFSHORE JACKET PLATFORM

作　　者：王燕[1] 郁有升[2] 

机构地区：[1]青岛理工大学,青岛266033 [2]西安建筑科技大学,西安710055

出　　处：《力学与实践》2004年第5期29-33,共5页Mechanics in Engineering

基　　金：国家自然科学基金项目(50179014)资助

摘　　要：分析和研究了导管架式海洋平台结构采用阻尼隔振技术的基本原理,建立了阻尼隔振体系简化计算模型,推导了两自由度简化模型,采用强行解耦方法计算结构第一振型阻尼比的计算公式.研究了隔振层参数与结构阻尼比的关系以及它们对结构整体和隔振层层间相对位移的控制效果,进行了在波浪力和地震工况下的数值模拟.结果表明,阻尼隔振方案是导管架式海洋平台的一种有效减振措施,当阻尼隔振层刚度较大时,可以有效控制平台结构的振动.In this paper, a simple mathematical model of platform is established based on the principle of vibration reduction by using damping layers. The first vibration mode's damping ratio is obtained by a forced decoupling to two freedom degree mode. Also the relations between damping layer parameters and the structural damping ratio including the relative displacement control effect of structure and damping layers are studied. And the numerical simulation under wave force or earthquake force is carried out. The results show that using damping layers to reduce vibration is an effective measure. When the rigidity of damping layers is great, the structural vibration can be controlled effectively.

关 键 词：隔振技术 结构阻尼比 刚度 简化计算 振型 海洋平台 有效控制 减振技术 减振措施 导管架 

分 类 号：O175[理学—数学] TU352[理学—基础数学]