Multi-objective optimal design and seismic performance of negative stiffness damped outrigger structures considering damping cost

• Published in: Engineering structures Vol. 229; p. 111615
• Main Authors: Sun, Fei-Fei, Wang, Meng, Nagarajaiah, Satish
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.02.2021; Elsevier BV
• Subjects: Amplification; Assembly; Carbon monoxide; Columns (structural); Cost saving; Damped outrigger; Design optimization; Drift; Earthquake dampers; Earthquakes; Energy dissipation; Multi-objective optimization; Multiple objective analysis; Negative stiffness; Optimization; Retrofitting; Seismic activity; Seismic performance; Seismic response; Stiffness; Tall buildings; Viscous damping; Wind; Wind effects; Negative stiffness; Multi-objective optimization; Damped outrigger; Cost saving; Seismic performance

•Building direct connection between NSDO parameters and seismic responses.•Proposing an optimization method on harmful drift, acceleration and damping cost.•Retrofitting existing CO structure with supplemental NSDO in resisting earthquakes. In this paper, the seismic performance of conventional damp...