结构半主动变刚度控制的研究

尽管已有的研究证明传统的变刚度控制系统可以有效地抑制结构在地震激励下动力响应,但是现有的变刚度装置仅能在很小的范围内改变结构的周期,而且也不利于抑制结构的加速度反应。为了克服这一局限性,本文提出了一种新型的半主动变刚度(ISAVS)控制系统,兼具基础隔震和传统变刚度控制的优点。基于作者提出的离复位控制策略,本文针对ISAVS系统进行了地震作用下的数值模拟,验证了它的可行性和有效性。

Study on Semi-active Structural Control Using Variable Stiffness System

Although it has been demonstrated that conventional semi active variable stiffness systems may be effective for vibration control of buildings subjected to seismic excitations,structural periods can vary as existing variable stiffness devices only within a narrow range,and the device is also unfavorable to restrain the dynamic acceleration response of structures.In order to overcome this limitation an innovative semi active variable stiffness(ISAVS) system with advantage of both the base isolation and the semi active variable stiffness system is presented in this study.Based on the off-and-towards-equilibrium(OTE) control strategy presented by the authors,numerical simulations are used to study the seismic response control of a multi-storey structure with the ISAVS system,and verify its feasibility and validity.