000010086 001__ 10086
000010086 005__ 20141205154143.0
000010086 04107 $$aeng
000010086 046__ $$k2008-10-12
000010086 100__ $$aGiannini, Renato
000010086 24500 $$aExperimental Study on the Cyclic Response of an Existing RC Bridge Pier

000010086 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010086 260__ $$b
000010086 506__ $$arestricted
000010086 520__ $$2eng$$aThis paper deals with experimental activity on piers belonging to an old viaduct of the Italian highway network. The tests consist of cyclically imposed displacement to a 1:4 scale of one of the piers, performed in the laboratory of the department of structures of the University of Roma Tre. The objectives of the experimental campaign is twofold: 1) evaluation of the failure mechanisms and collapse strength of the pier, 2) calibration of a numerical non-linear model using Opensees code, in order to simulate the seismic behaviour of the analyzed bridge. The experimental test performed on the first mock-up has shown that the shear behaviour is extremely relevant. In particular, the shear failure of the transverse beam highly influences the global cyclic behaviour of the specimen, with a pronounced pinching effect that reduces the dissipation capability of the pier. Moreover, other less relevant phenomena are observed: bond-slip of the reinforcing bars and buckling of the longitudinal steel bars of the column. A numerical model built in Opensees has been calibrated in order to reproduce the experimental results and provide a reliable model for further seismic analyses. Using literature models to reproduce the experimentally observed phenomena, the model has been able to simulate the real behaviour of the specimen in a satisfactory way.

000010086 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010086 653__ $$aExisting bridges, experimental activity, plain steel bars, cyclic response, shear modeling, non-linear analysis

000010086 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010086 720__ $$aGiannini, Renato$$iPaolacci, Fabrizio$$iSibilio, Enrico
000010086 8560_ $$ffischerc@itam.cas.cz
000010086 8564_ $$s694935$$uhttps://invenio.itam.cas.cz/record/10086/files/12-03-0066.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-03-0066.
000010086 962__ $$r9324
000010086 980__ $$aPAPER