Seismic Vibration Control of Buildings Using Friction Dampers and Base Isolation Techniques

Abstract

Over the last four decades, research on methods to reduce earthquake impacts on buildings has significantly increased, following the advent of base isolation techniques and energy dissipation devices. This surge in research is attributed to advancements in the field. Investigations have focused on the effects of lead rubber bearings (LRB) as base isolators and friction dampers as energy dissipation devices, both individually and in combination, within an eight-storey ‘C’-shaped structure. The analysis was executed using the ETABS program, applying linear response spectrum analysis methodology due to the building being located in seismic zone 4. Response factors studied include time period, base shear, storey displacement, and storey drifts. Findings indicate that the integration of these devices, both separately and as part of a dual control system, reduced the structural responses, enhancing the building’s seismic resistance. This enhancement was achieved through a decrease in energy within the building. The study also compares the results obtained from these methods against traditional models, highlighting improvements in performance.