Rocking incremental dynamic analysis

The seismic response assessment of rocking systems via Incremental Dynamic Analysis (IDA) is investigated, focusing on the issues that arise in analysis and postprocessing stages. Rocking IDA curves generally differ from those hysteretic structural due to (i) frequent appearance resurrections; (ii) their highly weaving non-monotonic behavior; (iii) overall high variability. Hence, including or ignoring results above first resurrection level, deriving statistics given a level versus an intensity measure as well selecting adequate number ground motion records runs per record, become challenging with non-trivial impact probabilistic characterization response. This necessitates fresh view choices post-processing techniques, aiming assure accuracy fidelity results. As example, effect different techniques are showcased two-dimensional rigid blocks assumed represent simplified models monolithic ancient columns slenderness.