Numerical Investigation of the Progressive Collapse of the Reinforced Concrete Wall-Frame Structures Considering the Soil–Structure Interaction

Abstract In this essay, the progressive collapse resistance of reinforced concrete wall-frame structures was evaluated with and without considering soil–structure interaction. The vulnerability frames against investigated middle column removal scenario from first story, based on sensitivity index. To evaluate effects interaction, along soil (hard soil) foundation were simultaneously modeled in FLAC software compared Seismostruct software. results showed that index decreased by interaction structures. Afterward, a parametric study (foundation thickness) substructures (soil types, densities, saturation conditions layers) performed. an increase thickness foundation, increased, therefore, condition structure would be more critical collapse. It found high groundwater levels subsoil can reduce its bearing capacity lead to damage structure. addition, it determined changing substructure type 4 (Clay-MC) 1 (Rock), use layer (SM) 2 (SM-CL/ML (Very hard clay)-SM), soils density, is better prevent