000010468 001__ 10468
000010468 005__ 20141205155730.0
000010468 04107 $$aeng
000010468 046__ $$k2008-10-12
000010468 100__ $$aKashima, Toshihide
000010468 24500 $$aDynamic Behaviour of a Museum Building Retrofitted Using Base Isolation System

000010468 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010468 260__ $$b
000010468 506__ $$arestricted
000010468 520__ $$2eng$$aThe main building of the National Museum of Western Art (NMWA), Japan, is a historic building completed in 1959. To improve the seismic performance of the NMWA main building with preserving the artistic value, the base isolation system was adopted as a retrofitting method. The Building Research Institute (BRI) of Japan started strong motion observation targeted on the NMWA main building in 1999 in order to examine the performance of the base isolation system. The observation system has six tri-axial acceleration sensors in the building and on the ground. A number of valuable strong motion records have been accumulated since. Firstly, this paper introduces the strong motion observation system installed in the NMWA main building. Secondly, dynamic behaviour of the base isolated building is discussed by means of Fourier spectrum analyses for the strong motion record from an earthquake with the peak ground acceleration of about 0.1G. Finally, natural frequencies and damping ratios assuming a single-degree-of-freedom system are identified using 101 strong motion records. The dependence of natural frequencies upon displacements of the base isolation system can be clearly recognised through the analysis. Stable damping ratios that are independent of displacements of base isolation devices are also observed.

000010468 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010468 653__ $$abase isolation system, seismic retrofit, historic building, strong motion observation

000010468 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010468 720__ $$aKashima, Toshihide$$iKoyama, Shin$$iIiba, Masanori$$iOkawa, Izuru
000010468 8560_ $$ffischerc@itam.cas.cz
000010468 8564_ $$s249342$$uhttps://invenio.itam.cas.cz/record/10468/files/05-06-0021.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0021.
000010468 962__ $$r9324
000010468 980__ $$aPAPER