000019363 001__ 19363
000019363 005__ 20170118182315.0
000019363 04107 $$aeng
000019363 046__ $$k2017-01-09
000019363 100__ $$aJinsenji, Toshiko
000019363 24500 $$aSeismic Retrofit of Existing 256m High Building By Installing Seismic Dampers To Cope With Long Period Earthquake Ground Motions

000019363 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019363 260__ $$b
000019363 506__ $$arestricted
000019363 520__ $$2eng$$aLong period earthquake motion was observed at 52-story steel-framed building located in the Osaka Bay area when Great East Japan Earthquake occurred in 2011 although the site of the high-rise building is 770 km away from epicenter. This paper deals with authors’ elaborated seismic retrofitting design of the high-rise building to provide for future great quake such as Nankai megathrust earthquakes. To obtain strength and stiffness, steel dampers were installed in the long direction frames and to reduce the shaking of the building, oil dampers were installed in the short direction frames. After retrofitting, vibration test was conducted, of which results shows that damping ratio in the short direction has increased to more than double in virtue of the oil dampers added. Dynamic analysis results show that the maximum and the cumulative displacements on the 51st floor reduced remarkably. The test and analysis results of the first-stage seismic retrofitting verifies satisfactory effects of the damping system.

000019363 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019363 653__ $$aretrofit ; long period earthquake ground motions ; high-rise building

000019363 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019363 720__ $$aJinsenji, Toshiko$$iYoshizawa, Mikio$$iTsukagoshi, Haruo$$iAsahi, Tomoki
000019363 8560_ $$ffischerc@itam.cas.cz
000019363 8564_ $$s985554$$uhttps://invenio.itam.cas.cz/record/19363/files/3478.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3478.
000019363 962__ $$r16048
000019363 980__ $$aPAPER