%0 Journal Article
%T Adaptive base isolation system to achieve structural resiliency under both short
%A Ramin Rabiee
%A Yunbyeong Chae
%J Journal of Intelligent Material Systems and Structures
%@ 1530-8138
%D 2019
%R 10.1177/1045389X18806403
%X Base isolation system is widely used to protect important and essential buildings from seismic hazards. The use of high damping is effective in reducing the resonance effect under long-period earthquake ground motions. However, high damping increases the acceleration demand under short-period ground motions, leading to a higher risk of damage of nonstructural components. Actually, low damping is beneficial to reduce the acceleration demand under short-period ground motions, suggesting the use of adaptive damping control, that is, high damping under long-period motions and low damping under short-period motions. In order to implement this concept, a semi-actively controlled base isolation system is provided in this article along with a new control law based on the transmissibility theory. Unlike existing studies, the proposed method enables a systematic design procedure for base isolated structures with semi-active dampers, which is called the simplified design procedure in this article. The performance of the proposed system is evaluated with numerical simulations for a base isolated three-story building with magneto-rheological dampers. It was shown that the proposed system achieves a high level of performance under long-period ground motions, while maintaining the exceptional performance of a conventional base isolation system with low damping under short-period ground motions
%K Base isolation system
%K semi-active control
%K magneto-rheological damper
%U https://journals.sagepub.com/doi/full/10.1177/1045389X18806403