Firstly, the main factors are obtained by use of dimensionless analysis. Secondly, the time scaling factors in
centrifuge modeling of bucket foundations under dynamic load are analyzed based on dimensionless analysis and control-
ling equation. A simplified method for dealing with the conflict of scaling factors of the inertial and the percolation in
sand foundation is presented. The presented method is that the material for experiments is not changed while the effects
are modified by perturbation method. Thirdly, the characteristic time of liquefaction state and the characteristic scale of
affected zone are analyzed.