000013332 001__ 13332
000013332 005__ 20161114160336.0
000013332 04107 $$aeng
000013332 046__ $$k2009-06-22
000013332 100__ $$aCamata, G.
000013332 24500 $$aSeismic vulnerability assessment of the della valle viaduct

000013332 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013332 260__ $$bNational Technical University of Athens, 2009
000013332 506__ $$arestricted
000013332 520__ $$2eng$$aThis paper reports the results of the seismic vulnerability assessment of an existing reinforced concrete highway bridge, “Della Valle viaduct” on Tollway 24, built in the Abruzzo Region, Italy in the 1970's. This study is part of a research in progress that aims preparing new Italian design guide-lines for the seismic vulnerability assessment of existing bridges.. The “Autostrada dei Parchi” company that manages the Tollway, provided extensive information on the bridge design and construction details. The bridge is curved and has a continuous prestressed concrete caisson girder, with two separate bridges, one in each direction. The hollow piers are prismatic and the their heigh vary between 5.5 and 50 meters. The piers and the deck are idealized with beam elements and appropriate kinematic constrains. Both linear and nonlinear analyses using force-based, fiber section frame elements were performed, and the results were compared with lumped plasticity models. The verifications were completed following the guidelines for the seismic safety assessment of existing bridges, Line 3, Reluis Project and the Eurocodes. The linear dynamic analyses are performed with linear beam elements, whereas the nonlinear time histories are performed with the distributed plasticity, force-based fiber-section model. The results point to the limitations of procedures, above all for existing, irregular, ductile bridges like the one analyzed. At present the nonlinear time history analyses appear to be the most logical choice for the seismic vulnerability assessment, although few issues, in particular concerning damping and accelerogram selection need to be further investigated.

000013332 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013332 653__ $$aseismic vulnerability, nonlinear time history, pushover analysis, response spectrum, existing bridge assessment. Abstract. This paper reports the results of the seismic vulnerability assessment of an existing reinforced concrete highway bridge, “Della Valle viaduct” on Tollway 24, built in the Abruzzo Region, Italy in the 1970's. This study is part of a research in progress that aims preparing new Italian design guide-lines for the seismic vulnerability assessment of existing bridges.. The “Autostrada dei Parchi” company that manages the Tollway, provided extensive information on the bridge design and construction details. The bridge is curved and has a continuous prestressed concrete caisson girder, with two separate bridges, one in each direction. The hollow piers are prismatic and the their heigh vary between 5.5 and 50 meters. The piers and the deck are idealized with beam elements and appropriate kinematic constrains. Both linear and nonlinear analyses using force-based, fiber section frame elements were performed, and the results were compared with lumped plasticity models. The verifications were completed following the guidelines for the seismic safety assessment of existing bridges, Line 3, Reluis Project and the Eurocodes. The linear dynamic analyses are performed with linear beam elements, whereas the nonlinear time histories are performed with the distributed plasticity, force-based fiber-section model. The results point to the limitations of procedures, above all for existing, irregular, ductile bridges like the one analyzed. At present the nonlinear time history analyses appear to be the most logical choice for the seismic vulnerability assessment, although few issues, in particular concerning damping and accelerogram selection need to be further investigated.

000013332 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013332 720__ $$aCamata, G.$$iSpacone, E.
000013332 8560_ $$ffischerc@itam.cas.cz
000013332 8564_ $$s222145$$uhttps://invenio.itam.cas.cz/record/13332/files/CD490.pdf$$yOriginal version of the author's contribution as presented on CD, section: Analysis methods for bridges subjected to seismic actions - ii (MS).
000013332 962__ $$r13074
000013332 980__ $$aPAPER