The construction of a loaded single pile in a soft soil has recently filled was discussed through this paper. Two different soil constitutive models have been used to examine the change in the pile axial load distribution. An elastic-plastic soil model defined by Matsui-Abe was compared with an elastic-viscoplastic model defined by Sekiguchi-Ohta. The parametric study was conducted using different cases of pile and soil loading. Both the value and type of loading have been played the main rule in changing the axial load distribution along the pile. The value of the surcharge load applied on the ground next to the pile head had the biggest effect. Moreover, the used soil model was found to have a major influence when the axial load is determined.