MOGA-Based Structural Design Method for Diagrid Structural Control System Subjected to Wind and Earthquake Loads

• Published in: International journal of steel structures Vol. 18; no. 5; pp. 1598 - 1606
• Main Authors: Kim, Hyun-Su, Kang, Joo-Won
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Steel Construction 01-12-2018; Springer Nature B.V; 한국강구조학회
• Subjects: Aseismic buildings; Civil Engineering; Computer simulation; Control systems design; Damping capacity; Design techniques; Earthquake dampers; Earthquake loads; Earthquakes; Engineering; Genetic algorithms; Materials Science; Multiple objective analysis; Seismic design; Seismic response; Solid Mechanics; Stiffness; Structural design; Tall buildings; Vibration isolators; Wind effects; Wind engineering; 토목공학; Wind excitation; Earthquake load; Smart tuned mass damper; Multi-objective genetic algorithm; Vibration control; Integrated structural optimal design; Diagrid structural system
• ISSN: 1598-2351; 2093-6311
• DOI: 10.1007/s13296-018-0055-5

An integrated optimal structural design method for a diagrid structure and control device was developed. A multi-objective genetic algorithm was used and a 60-story diagrid building structure was developed as an example structure. Artificial wind and earthquake loads were generated to assess the wind-induced and seismic responses. A smart tuned mass damper (TMD) was used as a structural control system and an MR (magnetorheological) damper was employed to develop a smart TMD (STMD). The multi-objective genetic algorithm used five objectives including a reduction of the dynamic responses, additional stiffness and damping, mass of STMD, capacity of the MR damper for the integrated optimization of a diagrid structure and a STMD. From the proposed method, integrated optimal designs for the diagrid structure and STMD were obtained. The numerical simulation also showed that the STMD provided good control performance for reducing the wind-induced and seismic responses of a tall diagrid building structure.