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This study reports on part of a series of seismic non-linear analyses of reinforced concrete structures. Two eight-storey buildings designed according to Eurocode 8 have been analysed in order to evaluate their seismic performance and safety. The nonlinear analyses have been performed using a new beam element able to follow the stiffness drop of the structures due to both cracking and yielding as well as their ductile cyclic behaviour. An attempt has been made to evaluate quantiatively the structure safety through their probability of failure. The obtained results are used mainly for comparison between the cases under analysis, rather than to draw generalized conclusions, because this is a first attempt to deal with a complex subject which still requires an exhaustive confirmation of both methodology and assumptions. In spite of the differences on the design options related to ductility class, irregularity and structural layout, the results confirmed that the EC8 design leads to quite comparable seismic performance of the structures. Moreover, it has been recognized the improvement of seismic performance when the design option passes from lower to high ductility classes.

Additional information

Authors: AREDE A, JRC Ispra (IT);COSTA A C, JRC Ispra (IT);PINTO A V, JRC Ispra (IT)
Bibliographic Reference: EUR 16356 EN (1996) 171pp., FS, free of charge
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, I-21020 Ispra (IT)
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