the collapse assessment of the low-rise asymmetric ductile rc frame buildings with a less-sensitive intensity measure to the spectral shape effects

Nonlinear dynamic analysis is frequently applied for the earthquake-induced collapse estimation. thus, it is important to understand the ground motion properties that are more effective in a building collapse. the ground motion intensity is a well-known property that is used in a dynamic analysis. it should reveal the impact of earthquake record characteristics on a structure. a proper intensity measure is sufficient and efficient enough when it results in small variability of demand and reduces the number of dynamic analysis assessing structural performance. spectral acceleration at the fundamental period of a structure, sa (t1), is a very common intensity measure used in the collapse assessment of structural systems. however,it is not the most efficient and sufficient im for most applications (luco & cornell, 2007).