000010338 001__ 10338
000010338 005__ 20141205155717.0
000010338 04107 $$aeng
000010338 046__ $$k2008-10-12
000010338 100__ $$aIsaković, Tatjana
000010338 24500 $$aPushover Analysis of a Two-Span Multicolumn Bent RC Bridge, Experimentally Tested on Three Shake Tables

000010338 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010338 260__ $$b
000010338 506__ $$arestricted
000010338 520__ $$2eng$$aA large scale model of two-span two-column bent RC bridge, representing one frame of a continuous bridge typical for the US practice was experimentally tested on three parallel shake tables at the UNR in the frame of the NEES project “Seismic Performance of Bridge Systems with Conventional and Innovative Materials”, coordinated by Prof. M. Saiidi. Although the bridge seems to be slightly irregular, its response was quite complex. The intensity as well as the direction of the deck rotations was significantly varying depending on the seismic intensity. At the ULJ, the investigated bridge was numerically analysed using the three typical pushover methods: a) the standard single mode N2 method, b) the non-adaptive multimode MPA method, and c) the adaptive multimode IRSA method. For lower seismic intensity levels, all methods estimated the displacement shape of the deck very well. For higher seismic intensity the single-mode method was less accurate. The estimation of the response made by the MPA was quantitatively relatively good, but the qualitative differences with the experiment were observed. Actual response was mostly influenced by one predominant mode, which varied the shape. In the MPA, the higher mode coincidentally compensated these changes. They were successfully identified by the IRSA method, where the estimation of the deflection shape of the superstructure was good. A poorer match with the experiment was observed only for the largest seismic intensity considered in the analytical studies. This discrepancy was mainly caused by the varying ratio of the bent stiffnesses after their yielding.

000010338 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010338 653__ $$a1 Pushover methods, Simplified nonlinear analysis, RC bridge, Experiment.

000010338 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010338 720__ $$aIsaković, Tatjana$$iFischinger, Matej
000010338 8560_ $$ffischerc@itam.cas.cz
000010338 8564_ $$s279485$$uhttps://invenio.itam.cas.cz/record/10338/files/05-02-0106.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-02-0106.
000010338 962__ $$r9324
000010338 980__ $$aPAPER