|Development of Smart Base-isolation System Using
Variable Damping Device
|Ichiro NAGASHIMA *1, Ryota MASEKI *1, Hiroshi
HIBINO *1 and Masayoshi TAKAKI *1
|After 1995 Hyogoken-Nanbu earthquake, buildings
equipped with base-isolation systems are steadily increasing in Japan. However,
large displacement pulses and large ground velocities have been observed in
the near-source region of 1999 Chi-Chi earthquake in Taiwan and this kind of
strong ground motions may cause a large displacement response in base-isolation
buildings and may lead to severe damage and possible collapse.
To counteract the excessive displacement response of base-isolation systems,
we have developed a smart base-isolation system using variable damping devices.
The effectiveness of this system is verified by shaking table tests and is
further studied by numerical analyses.
||semi-active damper, oil damper, base-isolation,
computer, displacement control