ABSTRACT
According to Performance Based Seismic Engineering (PBSE) philosophy a design approach based on strength reduction factors is presented here. More specifically, by taking into account structural damage, reduction factor spectra are evaluated for spectra sub-soil classes A, B and C (EC8) and a wide set of ductility parameters and damping factors. Reduction factors spectra are numerically carried out by analysing the dynamic seismic response of non-linear SDOF systems to a set of synthetic excitations by considering the Park and Ang damage index.
