Seismic Analysis on Soil-Structure Interaction of Buildings over Sandy Soil

During earthquakes seismic waves propagate from the bedrock through the soil layers and damage structures on the surface. The understanding of local site effects on strong ground motion is of particular importance for the mitigation of earthquake disasters as well as future earthquake resistant design. This paper presents an idealized two dimensional plane strain finite element seismic soil-structure interaction analysis using Abaqus V. 6.8 program. The analysis performed by considering three actual ground motion records representing seismic motions with low, intermediate and high frequency content earthquakes. Through these analyses, influence of different subsoils (dense and loose sand), buildings height, in addition to the frequency content of the earthquake have been investigated on amplification, acceleration response and stress propagation on the soil-foundation interface. Results illustrate that both sandy soils amplify seismic waves on the soil-structure interface because of the soil-structure interaction effect.