000019470 001__ 19470
000019470 005__ 20170118182320.0
000019470 04107 $$aeng
000019470 046__ $$k2017-01-09
000019470 100__ $$aNagashima, Ichiro
000019470 24500 $$aDevelopment and Application of Short Stroke Seismic Isolated System With Passive-Switching Oil Damper

000019470 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019470 260__ $$b
000019470 506__ $$arestricted
000019470 520__ $$2eng$$aAfter the Great East Japan Earthquake, apprehension about long-period and long-duration earthquakes and unexpected huge earthquakes leads to growing needs for seismically isolated buildings for the purpose of BCP. Seismically isolated buildings, which can mitigate the displacements of isolation layer to maximize the building areas, are required especially in densely urban areas. Collisions of isolation layer can be prevented by increasing the damping, but seismic isolation performance will become worse against minor and moderate earthquakes. The authors have developed the Short Stroke Seismic Isolation System with passive-switching oil damper in order to address this issue. The newly developed passive-switching oil damper can control the displacement within design limit during major earthquakes and keep the acceleration lower than acceptable level during minor or moderate earthquakes. The lower damping coefficient is firstly assigned to the damper to prepare for minor or moderate earthquakes. The damper mechanically switches from the lower to the higher one when the displacement exceeds a designated level. This isolation system is applied to a new building. The design clearance is 300mm which is almost half of the typical one. The earthquake responses of the building model with the damper installed are simulated. The simulated results show that, the acceleration during minor or moderate earthquake can be reduced by almost 30-40% and the isolation layer would not exhibit such displacement responses to large earthquakes as to exceed the clearance gap.

000019470 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019470 653__ $$aseismic isolation, passive-switching oil damper, collision prevention, earthquake response simulation

000019470 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019470 720__ $$aNagashima, Ichiro$$iNii, Aiko$$iKimura, Yuichi$$iMizutani, Taro$$iMaseki, Ryota
000019470 8560_ $$ffischerc@itam.cas.cz
000019470 8564_ $$s740874$$uhttps://invenio.itam.cas.cz/record/19470/files/3699.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3699.
000019470 962__ $$r16048
000019470 980__ $$aPAPER