Abstract
This paper discusses seismic response control of high-rise building utilizing magneto-rheological fluid damper (MR damper). For high-rise building, bending displacement of whole system due to column elongation cannot be neglected. To simulate the behavior of a high-rise building during an earthquake, one-mass system consisting of a cantilever column and a spring to limit the top rotation has been prepared for this feasible study. A MR damper has been set into the vertical direction to control rotational motions of the system. The MR damper can change damping force according to exciting current. ON/OFF control method for input current is investigated in this study. Through shaking table tests, it is cleared that proposed control method can effectively reduce the acceleration response of high-rise system.
