ABSTRACT
In the present paper the fragility of four moment resisting steel frames, as a function of six different vector-valued ground motion intensity measures, is evaluated. All the vector-valued IMs here considered are based on Sa(T1) as the first parameter. As the second parameter of the vector, PGA, PGV, ground motion duration tD (defined as the time interval delimited by the instants of time at which the 5% and 95% of the Arias Intensity occurs; Trifunac & Brady, 1975), the ID factor proposed by Cosenza & Manfredi (1997), the RT1,T2 (Cordova et al., 2001) and Np (Bojórquez & Iervolino, 2011) factors were used.
