Soil Structure Interaction Analysis of Two Dimensional Steel Frames under Seismic Loads

In this research work, a linear and nonlinear time history analysis for 2D multi-story steel frames on gravel soil with and without soil structure interactions have been done. Frames have different height start from 3 stories and up to 20 stories. A substructure method is used to model soil and shallow (footing) foundation system by linear springs and dashpots. The response spectrum analysis has also been done. Düzce earthquake accelerograms records are selected and scaled to specific response spectrum with PGA 0.35 and soil type B according to Eurocode 8 is considered. Fundamental period and base shears have been investigated with and without soil-structure interactions; the results have been presented and compared