磁流变阻尼器在相邻建筑结构体系弹塑性地震反应控制中的应用  

Applacation of magnetorheological damper to nonlinear seismic response control of adjacent structures

作　　者：孙清[1] 史庆轩[2] 周进雄[1] 张陵[1] 

机构地区：[1]西安交通大学建筑工程与力学学院,陕西西安710049 [2]西安建筑科技大学土木工程学院,陕西西安710054

出　　处：《世界地震工程》2005年第1期101-107,共7页World Earthquake Engineering

基　　金：教育部高等学校骨干教师计划资助项目;陕西省自然科学基金项目(2001SL10)

摘　　要：研究应用磁流变阻尼器连接相邻建筑结构的弹塑性地震反应控制问题。首先介绍磁流变阻尼器的力学模型,并设计了磁流变阻尼器的结构参数;其次,介绍钢筋混凝土框架结构的退化三线型恢复力模型及相邻建筑结构体系的特点,建立体系的力学模型及运动方程;最后进行半主动控制研究,设计了半主动控制器,通过算例实现了结构的半主动控制。分析结果表明,采用磁流变阻尼器连接的相邻结构振动控制是十分有效的,可避免地震中相邻结构发生磁撞损坏。Adjacent structures may collide with each other under severe earthquake excitation unless special strategies are adopted to avoid such hazards.Magnetorheological dampers(MRD) are installed parallelly between the adjacent structures,and may restrain elastic-plastic vibration of the adjacent structures subjected to seismic motions. The mechanical model and structural parameters of MRD are presented.Meanwhile,the vibration equations of two adjacent structures connected by dampers are derived, and a semi-active controller is designed based on optimal control theory. Numerical simulation given here has demonstrated the effectiveness of MRD on vibration control of the adjacent structures, thus the danger of collision between adjacent structures is eliminated.

关 键 词：相邻建筑 弹塑性地震反应 磁流变阻尼器 半主动控制 结构体系 相邻结构 恢复力模型 线型 力学模型 振动控制 

分 类 号：P315[天文地球—地震学] TU352[天文地球—固体地球物理学]