000004995 001__ 4995
000004995 005__ 20141120140002.0
000004995 04107 $$aeng
000004995 046__ $$k2008-06-25
000004995 100__ $$aKitahara, T.
000004995 24500 $$aSEISMIC PERFORMANCE OF RC BRIDGE PIERS CONSIDERING AGING OF BASE-ISOLATED RUBBER

000004995 24630 $$n4.$$pProceedings of the 4th International ASRANet Colloquium
000004995 260__ $$bASRANet Ltd., 2008
000004995 506__ $$arestricted
000004995 520__ $$2eng$$aAfter the Hyogoken-Nunbu earthquake, base-isolated bearings have been widely adopted in order to improve seismic performance of bridges. So, in the recent years, many researches have been carried out on the dynamic response of rubber bearings or on the seismic response of the base isolated bridges. Meanwhile, the ageing problems of bridge systems have been realized for many years. It is usually known the rubber performance deteriorates due to ageing. For instance, the stiffness and hardness of the rubber increase. However, there are only few studies so far on the aging of base-isolated rubber bearings. Therefore, in this study, the purpose is to evaluate the influence of aged rubber bearings on the seismic response of RC bridge piers. The relationship between ageing of base-isolated rubber and the bearings’ long-term performance is studied. Then the seismic responses of RC bridge piers are calculated through the dynamic analyses using two-degree of freedom model. Finally, a procedure to determine the longterm seismic performances of base-isolated bridges is discussed.

000004995 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004995 653__ $$a

000004995 7112_ $$a4th International ASRANet Colloquium$$cAthens (GR)$$d2008-06-25 / 2008-06-27$$gASRANet4
000004995 720__ $$aKitahara, T.
000004995 8560_ $$ffischerc@itam.cas.cz
000004995 8564_ $$s166255$$uhttps://invenio.itam.cas.cz/record/4995/files/033_Kitahara,_Takeshi.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 33.
000004995 962__ $$r4967
000004995 980__ $$aPAPER