�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶�W Vol�F 9-2Šª ”N�F 1994”N •Å�F 1963-1968•Å ’˜ŽÒ�i˜a�j�F - ƒ^ƒCƒgƒ‹�i˜a�j�F - �´˜^�i˜a�j�F
- ƒL�[ƒ��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒ�i‰p�j�F Kazuhiko KAWASHIMA, Shigeki UNJOH, Hidetoshi MUKAI ƒ^ƒCƒgƒ‹�i‰p�j�F SEISMIC RESPONSE CONTROL OF BRIDGES BY VARIABLE STIFFNESS CONTROL �´˜^�i‰p�j�F
Presented is a concept of the variable stiffness control to control bridge response against an earthquake. The proposed concept is to shift the instantaneous natural period of bridges using the variable dampers by avoiding the resonance with ground motions. The effectiveness of the variable stiffness control through the analytical simulation is presented. ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W