000011295 001__ 11295
000011295 005__ 20141205155856.0
000011295 04107 $$aeng
000011295 046__ $$k2008-10-12
000011295 100__ $$aParaskeva, Themelina S.
000011295 24500 $$aAn Improved Multimodal Procedure for Deriving Pushover Curves for Bridges

000011295 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011295 260__ $$b
000011295 506__ $$arestricted
000011295 520__ $$2eng$$aA modal pushover analysis (MPA) procedure for bridges is first proposed, that involves two additional steps compared to the initial proposal of the writers (Paraskeva et al, 2006), the key idea being that the inelastic deformed shape of the structure subjected to the considered earthquake level is used in lieu of the elastic mode shape. The concept of a multimodal pushover curve (derived using the MPA procedure) in terms of the base shear vs. deck maximum displacement is then put forward. The improved MPA procedure is used to assess the seismic performance of two actual bridges. The first structure is the Krystallopigi bridge, a 638m-long multi-span bridge, with significant curvature in plan, unequal pier heights, and different types of pier-to-deck connections. The second structure is a 100m-long three-span overcross bridge, typical in modern motorway construction in Europe, which is found to exhibit a rather unsymmetric response in the transverse direction, mainly due to torsional irregularity. It is found that the multimodal pushover curve reasonably matches the dynamic pushover curve derived from the more rigorous NL-RHA procedure. On the other hand, standard pushover curves based on single modal patterns, underestimated the total base shear and stiffness of the studied bridge.

000011295 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011295 653__ $$abridges, seismic design, pushover analysis, inelastic response

000011295 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011295 720__ $$aParaskeva, Themelina S.$$iKappos, Andreas J.
000011295 8560_ $$ffischerc@itam.cas.cz
000011295 8564_ $$s258339$$uhttps://invenio.itam.cas.cz/record/11295/files/14-0236.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 14-0236.
000011295 962__ $$r9324
000011295 980__ $$aPAPER