Traditional pile-based structure design methods imply that by neglecting the effect of soil-structure interaction in dynamic analysis; the obtained results tend to be conservative; but seismic response spectra analysis and pile structure failures during recent catastrophic earthquakes have indicated that liquefaction and soil-pile-structure interaction could in fact lead to an increase in the inertial response of structures on pile foundation. Through analysis of the influence of ground liquefaction on structure-pile inertial interaction using dynamic centrifuge model experiments

a simplified analysis method for the computation of pile based structure inertial response in ground with a liquefied top layer was proposed and used to analyze model experiments described in this paper and by Wilson et al.; computation results show good agreement with experiment results

which demonstrates the effectiveness of the proposed method.