Abstract
Two types of numerical simulation are conducted for large scale shaking table experiments of a grouped-pile subjected to a large seismic motion and embedded in dry sand. One adopts a modeling where piles are modeled as beams and horizontal soil-pile interactions are modeled using nonlinear Winkler springs. The other adopts a modeling where soilpile systems are modeled using nonlinear Sway-Rocking springs. In the latter, pile deformation was further estimated using a seismic deformation method. Since the piles did not yield in the experiments, numerical models were examined from the viewpoint of horizontal load transfer between soil and pile. Simulation results especially using nonlinear Winkler springs were excellent.
