000011311 001__ 11311
000011311 005__ 20141205155858.0
000011311 04107 $$aeng
000011311 046__ $$k2008-10-12
000011311 100__ $$aPavese, Alberto
000011311 24500 $$aFRP Retrofit for Insufficient Lap-Splice in Rectangular Hollow Section RC Bridge Piers: Numerical Simulation and Large Scale Testing

000011311 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011311 260__ $$b
000011311 506__ $$arestricted
000011311 520__ $$2eng$$aMost existent bridges do not reflect the recent earthquake design rules particularly for the aspects related to the definition of the seismic input, the energy dissipation capacity and the capacity design concepts. Several efforts have been addressed in last years both developing assessment methods and testing retrofit measures to improve the seismic response of RC bridge piers. The research presented in this paper focused on the loss of resistance and ductility due to insufficient lap-splice, leading to the slippage of the longitudinal bars, in the critical area of hollow rectangular section bridge piers. First, a simple and reliable model for assessment and design purposes was developed and validated on the tests results of a previous experimental campaign. This model has then been used to investigate the efficiency of the FRP retrofit in case of insufficient lap-splice. The retrofit design has been optimized through a parametric analysis considering different fibers and geometrical characteristics. Quasi-static cyclic tests will then be performed on four 1:2 scaled piers allowing for the evaluation of the efficiency of the FRP strengthening through comparison of the performances of the as-built and the retrofitted specimens. During the realization of the retrofit, particular attention will be paid to the anchorage of the FRP at the base of the pier. Furthermore, it is also very important not to violate the shear capacity consequently to the increase of the lateral strength deriving from the upward shift of the plastic hinge obtained as a consequence of the chosen retrofit solution.

000011311 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011311 653__ $$ahollow sections, bridge piers, FRP seismic strengthening, lap-splice, under-designed.

000011311 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011311 720__ $$aPavese, Alberto$$iPeloso, Simone
000011311 8560_ $$ffischerc@itam.cas.cz
000011311 8564_ $$s207633$$uhttps://invenio.itam.cas.cz/record/11311/files/12-01-0141.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0141.
000011311 962__ $$r9324
000011311 980__ $$aPAPER