000013648 001__ 13648
000013648 005__ 20161114170126.0
000013648 04107 $$aeng
000013648 046__ $$k2011-05-25
000013648 100__ $$aTubaldi, E.
000013648 24500 $$aFree Vibration Problem of Prsi Bridges: Analytical Solution and Parametric Analysis

000013648 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013648 260__ $$bNational Technical University of Athens, 2011
000013648 506__ $$arestricted
000013648 520__ $$2eng$$aThis paper analyzes the dynamic behavior of partially restrained seismically isolated (PRSI) bridges. These are a particular class of multi-span seismically isolated bridges in which isolation bearings are posed only at the top of the piers, while seismic stoppers restrain the transverse motion of the superstructure at the abutments. The transverse dynamic behavior of these partially-restrained bridges is described analytically by considering a two-dimensional simply supported beam model, with intermediate visco-elastic restraints whose properties are calibrated to describe the substructures’ behavior. Particular simplified configurations are considered which allow to identify a minimal set of characteristic problem parameters that completely describe the dynamic response. The properties of the dynamic systems are analyzed by considering separately the undamped and the damped case. The results of the study contribute to improve the understanding of the dynamic behavior of partially restrained seismically isolated bridges and allow to draw some conclusions useful for their preliminary assessment and design.

000013648 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013648 653__ $$aseismic isolation, bridge, partial restraint, free vibrations, non-classical damping.

000013648 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013648 720__ $$aTubaldi, E.$$iDall'Asta, A.
000013648 8560_ $$ffischerc@itam.cas.cz
000013648 8564_ $$s492938$$uhttps://invenio.itam.cas.cz/record/13648/files/436.pdf$$yOriginal version of the author's contribution as presented on CD, section: RS 12 Computational Methods in Geotechnical Earthquake Engineering.
000013648 962__ $$r13401
000013648 980__ $$aPAPER