Smart outrigger damper system for response reduction of tall buildings subjected to wind and seismic excitations

• Published in: International journal of steel structures Vol. 17; no. 4; pp. 1263 - 1272
• Main Authors: Kim, Hyun-Su, Kang, Joo-Won
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Steel Construction 01-12-2017; Springer Nature B.V; 한국강구조학회
• Subjects: Aseismic buildings; Civil Engineering; Control algorithms; Control systems; Control theory; Dynamic response; Earthquake construction; Earthquake dampers; Earthquake loads; Earthquakes; Engineering; Fuzzy control; Fuzzy logic; Fuzzy systems; Genetic algorithms; Lateral loads; Materials Science; Multiple objective analysis; Numerical analysis; Reduction; Seismic design; Seismic engineering; Seismic response; Solid Mechanics; Tall buildings; Wind effects; 토목공학; multi-objective genetic algorithm; wind-induced response reduction; MR damper; tall buildings; smart outrigger damper system; fuzzy logic controller; seismic response control
• ISSN: 1598-2351; 2093-6311
• DOI: 10.1007/s13296-017-1201-1

The outrigger damper system has recently been proposed to reduce the dynamic response of tall buildings subjected to lateral loads. Previous studies have shown that the outrigger damper system could effectively increase the response reduction capacity of tall buildings. The outrigger damper system was used not only for a response reduction of tall buildings, but also for adjusting the differential column shortening. When an outrigger damper system is designed optimally for wind or earthquake loads, it shows good control performance against each target excitation. On the other hand, the outrigger damper system designed for the wind load cannot effectively control the seismic responses and vice versa. This study examined the control performance of a smart outrigger damper system for reducing both the wind and seismic responses. The smart outrigger damper system was comprised of magnetorheological dampers. A fuzzy logic control algorithm, which was optimized by a multi-objective genetic algorithm, was used to control the smart outrigger damper system. Numerical analysis showed that the smart outrigger damper system could provide superior control performance for the reduction of both wind and earthquake responses compared to the general outrigger system and passive outrigger damper system.