EU 6th International Conference on Health, Engineering and Applied Sciences , Belgrade, Sırbistan, 17 - 20 Ekim 2024, ss.1-20
During significant seismic events, structures
experience considerable seismic energy. A base isolation system (BIS) is among
the most effective approaches to mitigating seismic responses. However, the
effectiveness of BIS alone may be limited, as the nonlinear behaviour of base
isolators can lead to increased displacement demands in earthquake-prone areas.
A combination of supplemental viscous dampers and base isolation provides one
of the most effective seismic response control techniques. To evaluate the
effect of Laminated Rubber Bearing (LRB) stiffness on the building's seismic
performance, three distinct bearing stiffnesses were selected for the building
model. The findings indicate that compared to the model without dampers,
displacements and accelerations at the isolation floor and above are
significantly reduced in the isolated system equipped with viscous dampers.
Furthermore, the results highlight the importance of optimal damping
coefficient selection for multi-objective optimization of the building’s
seismic behaviour (i.e., displacement and acceleration).