Optimization Study of Isolated Building using Shape Memory Alloy with Friction Pendulum System under Near-fault Excitations

Structures close to causative earthquake faults may exhibit substantially different seismic responses than those recorded away from the excitation source. In near-fault zone, long duration intense velocity pulses can induce unexpected demands on isolated buildings. This study investigates performance of a five-storey building frame with shape memory alloy based friction pendulum system (SMA-FPS) under excitations. The effectiveness SMA-FPS is quantified by comparing same structure subjected (FPS). Parametric studies, optimal analysis and numerical simulations are carried out structural parameters isolation systems. For this, particle swarm optimization (PSO) method used acquire characteristic strengths SMA-FPS. transformation strength SMA frictional coefficient selected as two design variables minimize top storey acceleration, which objective function optimize reduction efficiency system. response achieves superior over FPS Moreover, reveals that significantly reduces bearing displacement compared Finally, computational results validated simulation performed in SAP2000 provides consistent result.