Passively controlled MR damper in the benchmark structural control problem for seismically excited highway bridge

摘要

In this paper, we propose a simple control approach to produce negative stiffness hysteretic loops for the response control of base-isolated bridges. The combination of hysteretic loops of the controller with those of the bearing results in virtually rigid perfectly plastic force-deformation characteristics possessing large damping ratio without transmitting excessive force to other structural members. The proposed approach has the potential to be implemented as a passive approach. In this paper, the application of this approach for the response control of the benchmark structural control problem for seismically excited highway bridge has been presented.