摘要
根据磁流变阻尼器的性能试验结果提出了扩充Bingham模型,在分析双态控制优缺点的基础上,根据钢筋混凝土结构的实际破坏特性提出了三态控制方法;通过对一装有磁流变阻尼器的3层钢筋混凝土结构进行实例分析,对比研究了双态控制方法和三态控制方法.研究结果表明:无论采用何种控制方法,结构中加入磁流变阻尼器均能有效地减小结构的位移地震反应,同时,三态控制方法能解决双态控制方法的加速度反应局部放大问题,它不仅具有控制简单的特点。
An extended Bingham model is proposed on the basis of obtained experimental results of the property of magnetorheological (MR) dampers. In view of the superiority and inferiority of the bistate control and the actual damage characteristic of steel reinforced concrete structures, a tristate control method is developed. Both control methods have been used to a threeflour structure with MR dampers. Numerical results show that both control methods can reduce the displacement response of the structure. It is found that the tristate control method successfully solves the problem of amplification of local acceleration response appearing in the bistate control method. Moreover, the tristate control method has not only simple control strategy but also excellent seismic control effect.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2003年第7期754-758,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50135030)
中国博士后科学基金资助项目(中博200114).
关键词
磁流变阻尼器
三态控制
弹塑性
magnetorheological damper
tri-state control
elastoplasticity
