Author(s)

E. Cosenza, G. Manfredi & G.M. Verderame

Abstract

Push-over analysis of underdesigned r.c. frames: a case study in Catania E. Cosenza,^ G. Manfredi,^ G.M. Verderame ™ Dipartimento di Analisi e Progettazione Strutturale, Facolta di Ingegneria, Universita di Napoli Federico II, 80125 Napoli, Italy E-Mail: gamanfre @ unina. it Abstract Most of the existing reinforced concrete buildings were designed according to early seismic provisions or, sometimes, without applying any seismic provision. Some problems of strength and ductility, like insufficient shear strength, pull-out of the rebars, local mechanism, etc., could characterize their structural behaviour. Therefore the presence of these problems requires a refined procedure of assessment of existing r.c. structures. For this aim an useful tool can be the pushover analysis of the structures, that is suggested by different advanced code and provisions. In this paper an innovative numerical model is presented. This model allows to take into account the most important m

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