Vibration Control Induced by Ice of a Jacket Platform

作     者：郑宏宇 姜大宁 唐友刚 周满红 

作者机构：School of Civil Engineering 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2003年第9卷第4期

页      面：326-329页

学科分类：12[管理学] 083002[工学-环境工程] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0837[工学-安全科学与工程] 

主　　题：jacket platform vibration response induced by ice vibration control magnetorheological suspensions technology 

摘      要：Based on the self-excited vibration theory of ice, the vibration control technology of jacket platform is studied in this paper. The magnetorheological suspensions (MR) unit is chosen as the damper, the control objective function for vibration excited by ice is determined by instantaneous optimal control (IOC) method, and genetic algorithm (GA) is used to select the optimal control force. For the jacket platform of 40 m in height and a 3-floor deck, the vibration responses induced by ice have been calculated before and after control considering the different thickness and speed of ice. It is shown that the control method presented in this paper can reduce the vibration response by 30%, and it is feasible to adopt MR absorber and GA in the control of vibration induced by ice.