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Experimental and numerical studies on the cyclic behavior of R/C hollow bridge piers with corroded rebars

  • Cardone, D. (Scuola di Ingegneria, Universita degli Studi della Basilicata) ;
  • Perrone, G. (Scuola di Ingegneria, Universita degli Studi della Basilicata) ;
  • Sofia, S. (Scuola di Ingegneria, Universita degli Studi della Basilicata)
  • Received : 2011.11.08
  • Accepted : 2012.02.20
  • Published : 2013.01.25

Abstract

A comprehensive experimental program of cyclic tests on 1:3-scale models of bridge piers is going to be carried out at the Laboratory of Structures and Materials of the University of Basilicata. The testing models include eight RC single shaft piers with hollow circular cross section. Four piers have been realised using corroded steel rebars. In this paper, the results of preliminary numerical simulation analyses of the cyclic behaviour of the piers, carried out with Opensees using fiber-based models, are presented. Pull-out and lap-splice effects of steel rebars have been taken into account in the numerical analyses. First, the experimental specimens and the test set up are presented. Next, the results of the numerical analyses are discussed. In the numerical analyses, different configurations and levels of corrosion have been considered. The effective stiffness and equivalent damping of the piers is reported as a function of pier ductility and pier drift.

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