新型电流变智能隔震装置的结构隔震效果分析

将电流变智能阻尼器与叠层橡胶隔震垫相结合,形成新型电流变智能隔震装置,对结构进行智能隔震控制。首先,进行了新型电流变智能隔震装置的设计,推导了转动电流变阻尼器控制力的计算公式,提出了电场强度和装置剪切变形之间的函数关系,实现了拟限位型和拟摩擦型的隔震装置模型;然后,针对电流变智能隔震控制的特点,提出了摩擦控制的判别规则并给出了计算公式,编制了相应的程序;最后,对应用电流变智能隔震装置的单自由度结构进行了数值分析,结果表明:两种类型的隔震装置对结构都有较好的控制效果,限制了隔震层变形的同时不增加隔震层的加速度,控制效果比较理想。

ISOLATION EFFECTS ANALYSIS OF STRUCTURE WITH NEW TYPE ER SMART ISOLATOR

A new type electricrheological (ER) smart isolator is developed with ER smart damper and rubber isolator. The new type ER smart isolator is firstly designed. Controlled force formulas of rotation ER damper are proposed. The functions between electric field intensity and shear transform of ER damper are presented. Two kinds of hysteretic models are proposed as pseudo-displacement limited model and pseudo-friction model. Based on the controlled characteristic of ER smart isolator, friction control rule and formulas are then put forward and coded into a program for application. Finally, a SDOF structure with ER smart isolator is analysed. The results show that: two kinds of ER isolators are both efficiency for displacement decrease in the isolation layer, and the acceleration does not increase at the same time.