Study on Evaluating Methods for Time-Dependent Ultimate Bearing Capacity of Single Driven Pile

The ultimate bearing capacity of single driven pile increases with time after pile installation, and it is of great importance to foundation design. Although various methods have been established to study this time-dependent ultimate bearing capacity of driven pile, they have different occasions for application, and the deduced results of them may differ greatly. In this paper, four typical types methods for determining time-dependent ultimate bearing capacity of driven pile are analyzed, which include empirical method using logarithm function, empirical method using hyperbolic function, soft method using artificial neural networks and analytical method using consolidation theory. Three criteria are used to appraise the methods. Finally, method based on consolidation theory is suggested to be basic method to estimate time-dependent ultimate bearing capacity of single driven pile.