000009906 001__ 9906
000009906 005__ 20141205153205.0
000009906 04107 $$aeng
000009906 046__ $$k2008-10-12
000009906 100__ $$aDu, Xiuli
000009906 24500 $$aNonlinear Seismic Response of Isolated Bridges with LRB

000009906 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009906 260__ $$b
000009906 506__ $$arestricted
000009906 520__ $$2eng$$aIn order to investigate the nonlinear seismic responses of isolated bridges with lead rubber bearings (LRB) under bi-directional horizontal earthquake excitation, bi-directional Bouc-Wen hysteretic model of LRB was adopted to describe the constitutive law of devices. Based on the bi-directional coupled Bouc-Wen model of LRB, an analytical model of nonlinear seismic responses of continuous multi-span isolated bridges with LRB and its solving method were carried out. Multi-degrees-of-freedom mathematical model of seismically isolated bridge is right and bi-directional coupled Bouc-Wen model of LRB is reasonable by shaking table tests of continuous girder isolated bridges model with LRB. Experiment results agreed expectably well with the results obtained from theoretically analytical results of displacement and acceleration of deck, vertical force of LRB, displacement and force-displacement of isolator roughly. It is verified that computation method of seismically isolated bridge given this paper is right and effective when analyzing nonlinear earthquake response of continuous girder isolated bridges with LRB. It should consider the bi-directional coupled interaction of the restoring forces of LRB, which has considerable effects on the seismic responses of the isolated bridge. Vertical tension of LRB should be considered if vertical earthquake amplitude is greater in isolator design.

000009906 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009906 653__ $$aisolated bridges, nonlinear seismic response, shaking table test, lead rubber bearings

000009906 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009906 720__ $$aDu, Xiuli$$iHan, Qiang$$iZhan, J.D.
000009906 8560_ $$ffischerc@itam.cas.cz
000009906 8564_ $$s742958$$uhttps://invenio.itam.cas.cz/record/9906/files/06-0037.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0037.
000009906 962__ $$r9324
000009906 980__ $$aPAPER