000015794 001__ 15794
000015794 005__ 20161115135330.0
000015794 04107 $$aeng
000015794 046__ $$k2013-06-12
000015794 100__ $$aArgyroudis, S.
000015794 24500 $$aSeismic Response of Bridge Abutments on Surface Foundation Subjected To Collision Forces

000015794 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015794 260__ $$bNational Technical University of Athens, 2013
000015794 506__ $$arestricted
000015794 520__ $$2eng$$aBridges are important components of the roadway and railway networks, as they must remain operational in the aftermath of the seismic event. Permanent movements of the backwall and the backfill soil and rotational deformations of the abutment-backfill system are well known failure modes that potentially may incite deck unseating mechanisms. However, only a few studies dealt with the modeling of deck-abutment-backfill pounding effect. In this framework, an extended parametric study was conducted on a simplified abutment-backfill analytical model. A typical seat-type abutment was analyzed using 2D nonlinear FE model in Plaxis. Simultaneously, a refined abutment-backfill model was built in commercial software SAP2000 in view to highlight significant parameters of the interaction aiming at identifying the effect of collisions on anticipated damages of the abutment. The assessment of the deckabutment-backfill response was performed on the basis of longitudinal maximum and residual movements and rotations of the abutment that may affect both the integrity and the postearthquake accessibility of the bridge. SSI effects due to the interaction of the deck with the abutment and the backfill soil were considered; analyses showed that large seismic movements during an earthquake and permanent movements of the abutment are deemed to put in danger the abutment itself, the integrity of the end spans and finally the accessibility of the bridge. Comparison of different seat-type abutment models in Plaxis and SAP2000 revealed that modeling of bridge abutments with emphasis on the geotechnical design should be properly made. Poor design assumptions may have a serious impact in the assessment of the response of the abutment-backfill-bridge system.

000015794 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015794 653__ $$aBridge; abutment; embankment; collision force; modeling; Plaxis; SAP 2000; abutment failure modes.

000015794 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015794 720__ $$aArgyroudis, S.$$iMitoulis, S.$$iPitilakis, K.
000015794 8560_ $$ffischerc@itam.cas.cz
000015794 8564_ $$s1240272$$uhttp://invenio.itam.cas.cz/record/15794/files/1465.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 14 SEISMIC ASSESSMENT AND RETROFIT OF BRIDGES
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000015794 962__ $$r15525
000015794 980__ $$aPAPER