000010626 001__ 10626
000010626 005__ 20141205155746.0
000010626 04107 $$aeng
000010626 046__ $$k2008-10-12
000010626 100__ $$aLee, George
000010626 24500 $$aA Roller Seismic Isolation Bearing for Highway Bridges

000010626 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010626 260__ $$b
000010626 506__ $$arestricted
000010626 520__ $$2eng$$aA new roller seismic isolation bearing is developed for use in highway bridges. This new bearing uses rolling of cylindrical rollers on V-shaped sloping surfaces to achieve seismic isolation. The bearing is characterized by a constant spectral acceleration under horizontal ground motions and by a self-centering capability, which are two desirable properties for seismic applications. The former makes resonance less likely to occur between the bearing and horizontal earthquakes while the latter guarantees the bridge superstructure can self-center to its original position after earthquakes. To provide supplemental energy dissipation to reduce the seismic responses, the bearing is designed with built-in sliding friction mechanisms. This paper first presents the acceleration responses of and forces acting on the bearing under base excitation. Next, the governing equation of horizontal motions, the base shear-horizontal displacement relationship, and conditions for self-centering for the rollers to maintain in contact with the bearing plates and for rolling without sliding are discussed.

000010626 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010626 653__ $$aSeismic, Bridges, Bearings, Seismic isolation.

000010626 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010626 720__ $$aLee, George$$iOu, Yu-Chen$$iSong, Jianwei$$iNiu, Tiecheng$$iLiang, Zach
000010626 8560_ $$ffischerc@itam.cas.cz
000010626 8564_ $$s300486$$uhttps://invenio.itam.cas.cz/record/10626/files/11-0140.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 11-0140.
000010626 962__ $$r9324
000010626 980__ $$aPAPER