Sensitivity Analysis of Uncertain Material RC Structure and Soil Parameters on Seismic Response of Soil-Structure Interaction Systems

In seismic performance based design context, engineers are faced to a difficult task estimate the response of soil-structure interaction (SSI) systems. To accomplish this successfully, all sources random and epistemic uncertainties should be taken into account. However, uncertain parameters have not same influence on model response; sensitivity analysis is therefore required. This article treats two following aspects: first one perform in order study their structural response. The effect done by studying maximum structure displacement towards used materials variation (fc’, εc0, εcu, Es, fsy, α, εsu, A, ξ) soil properties (ξg, ν) SSI consists determining, quantifying analyzing how outputs N2-SSI affected input variables fluctuations. second aspect analysing system considering correlation between (shear wave velocity damping) lack knowledge due correlation. results indicate that very sensitive concrete steel for larger values shear velocity. While, damping Poisson's ratio case with 90 m/s, main inputs greatest output.