Abstract: By the method of shearing displacement analysis, the interactions between single pile with cap and soil are analyzed, the formula of displacement and axial force for pile with cap under uniform loading are obtained. The finite element software, ABAQUS, is used to analyze the bearing performance of single pile in three dimensions, and the results are compared with those of the analytical calculation method. The comparison shows that the settlements of roadbed surface and pile top as well as the pile axial forces calculated by the above two methods are similar. The analytical calculation result is in consonance with the measured data, which verifies the accuracy of analytical calculation method.