In this paper, the responses of single pile foundation due to liquefaction- induced ground flow in a physical model test were calculated using a 3-dimensional soilwater coupled dynamic analysis. The numerical procedure was used to simulate centrifuge test data from Abdoun et al1 in which seismic responses of a single pile foundation installed in slopping two- and three-layered grounds were carried out. The authors simulated the series of experiment tests numerically not for analysis validation but for a comparative discussion on the capability of the numerical approach to simulate an object in physical test and probe into the failure mechanism of the piles due to the lateral spread liquefied soils. As a result, the numerical simulation revealed general consistency to physical measurements of ground surface movement, pile head movement, and bending moment development in both sloping two- and three layered ground consisted of loose sand I and II respectively. Normalized bending moment distributions and ground displacement distributions in two- and three- layered also showed good agreement. In the normalization, M or H meant the bending moment or displacement of pile at any time, Mmax and Hmax meant maximum bending moment or displacement of pile. Numerical analysis predicted much greater value of displacement and bending moment because of much movable boundary provided in the numerical analysis. It illustrated that in design of liquefaction remediation to measures for single pile project, the results from both of centrifuge experiments and numerical modeling could be the usefulness and applicability in simulating the bending responses of single pile foundation to lateral spreading while the limitation was understood.