多维地震作用下偏心结构的磁流变阻尼器半主动控制  

Semi-active control of eccentric structure under multi-dimensional earthquake using MR damper

作　　者：李宏男[1] 杨浩[2] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116042 [2]沈阳建筑工程学院土木工程学院,辽宁沈阳110168

出　　处：《地震工程与工程振动》2004年第3期167-174,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家杰出青年科学基金项目(50025823);辽宁省教育厅科研项目(A类20201056);辽宁省自然科学基金重大项目(2001101006)

摘　　要：理论研究与震害经验表明,地震时结构会产生不可忽略的平动与扭转耦合的空间振动。本文提出了基于线性最优控制理论的部分状态反馈次优控制策略和基于遗传算法的控制策略,以Matlab和Simulink为平台,采用磁流变阻尼器对双向水平地震作用下的偏心结构平-扭耦联反应进行半主动控制。对一6层双向偏心框架结构进行控制效果仿真分析的结果证明,本文提出的2种控制策略是有效的。Theoretical research and earthquake damage investigation turn out that there is non-negligible spatial vibration resulting from coupled translation and torsion vibration in structures when earthquake occurs. Partial state feedback sub-optimum control law based on linear optimizing control theory and control law based on genetic algorithm are presented in this paper. With the Matlab and Simulink, the semi-active control is implemented on eccentric structure under two-way horizontal earthquake using magneto-rheological damper, in order to control the coupled translation and torsion response. Taking a bilateral eccentric frame structure for example, the control effect is analyzed. And it turns out that the two proposed control laws are valid.

关 键 词：多维地震 偏心结构 平扭耦联反应 磁流变阻尼器 SIMULINK 半主动控制 

分 类 号：P315.966[天文地球—地震学]