Author(s)

M. Marletta & I. Caliò

Abstract

In this work the seismic resistance of a reinforced concrete building, before and after a seismic retrofitting, is evaluated. The building was built in the late seventies in Eastern Sicily, a high seismic area where regulations have been enforced only since 1981, therefore it was not designed to resist earthquake loading. Recently a retrofitting project for the considered building has been developed by a professional engineers team. The project includes both a partial reinforcement of the existing structure and a base isolation. In this part I the problem of the evaluation of the seismic resistance of the existing building is addressed by means of three-dimensional nonlinear analyses as well as of simplified procedures. The building has been modelled as a space-frame in wh

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