29 連結振り子による制震システムの設計法に関する研究

概要

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In this paper, a new type of active response control system is proposed to improve aseismic efficiency of the base-isolation systems. Mechanical property of this new system is very simple, namely, control device is assembled by moving-mass to be installed in the isolated story and its dual connection with the upper structure and the basement. This system is named as an "Active Powered-Mass Couplers" system, one of the connecting members is actively controlled as that the 'negative' stiffness is apparently generated. By operating negative stiffness, motion of moving-mass is amplified, and 'dynamic damper' effects may be increased. Under generating negative stiffness with the active powered-mass coupler system, effective vibration isolating effects may be actualized by not introducing so large volume of the additional mass as for the general mass damper system. Optimal design of the active powered-mass couplers system is proposed by applying the general tuning theory for Tuned Mass Dampers (TMD) system and response control effects of this new system is investigated by numerical case studies. As a result from those evaluations, it is assured that the active powered-mass couplers can actualize remarkable reduction of responses at the area of resonant frequencies and can give effective seismic isolating operations for the acceleration responses.
一般社団法人日本建築学会の論文
2005-03-20