標題: Analytical and experimental studies on building mass damper system with semi-active control device
作者: Liu, Yu-Fang
Lin, Tzu-Kang
Chang, Kuo-Chun
土木工程學系
Department of Civil Engineering
關鍵字: building mass damper;MR damper;semi-active control
公開日期: 1-六月-2018
摘要: A concept of improving an optimum building mass damper (OBMD) system through a semi-active control method for enhancing the efficiency of controlling structural responses is proposed. The proposed concept entails replacing the passive fluid viscous dampers used in an OBMD system with semi-active magnetorheological dampers, thus transforming the system into a novel semi-active OBMD (SOBMD) system for better seismic performance. A numerical model based on the Bouc-Wen model with the interpolation technique was established to represent the behavior of the semi-active magnetorheological dampers. The SOBMD system was then developed on the basis of linear-quadratic regulator method and a continuous-optimal control concept. The damping force in the SOBMD system can be manipulated according to the structural response; therefore, the SOBMD system affords the possibility of improving the displacement or acceleration response compared with the original OBMD system. Both of the numerical analysis and the experimental verification demonstrated the superior seismic mitigation ability of the SOBMD system. Several earthquake events with different characteristics were simulated in a series of numerical analysis to further verify the performance of the proposed SOBMD system. In short, the benefits of both the active and passive control system are successfully combined in the proposed SOBMD system.
URI: http://dx.doi.org/10.1002/stc.2154
http://hdl.handle.net/11536/144982
ISSN: 1545-2255
DOI: 10.1002/stc.2154
期刊: STRUCTURAL CONTROL & HEALTH MONITORING
Volume: 25
顯示於類別:期刊論文