摘要
作为半主动控制系统经典范例之一,变阻尼系统得到了广泛的应用,然而,近来的研究显示,仍需对其控制性能重新认识。本文以一个在基础隔震层设置半主动变阻尼器的6层结构作为算例,通过数值模拟,讨论了粘性变阻尼控制系统可能成立的基本条件和适用范围。计算结果显示,在一般情况下,相比被动阻尼控制,半主动变阻尼控制并不能明显提高控制效果,甚至有所不及,需要慎重考虑。
As a classical example of the semiaetive control system, the variable damper is widely used. However, the latest research results show that its performance stiU need to be further studied. In this paper, the basic conditions and limits of the applicability of viscous variable dampers are discussed through a numerical example in which a six - story frame structure with a variable damper installed in the base-isolated story is considered. Numerical results show that in contrast to that of passive dampers, the effect of variable dampers is not better, even its effect is inferior. Therefore, more consideration of research about the variable damper is necessary.
出处
《四川建筑科学研究》
北大核心
2007年第2期124-126,共3页
Sichuan Building Science
基金
国家自然科学基金(50508003)
关键词
结构控制
变阻尼控制
半主动控制
地震激励
structural control
semi- active control
variable damper
seismic excitations
