Comparative Evaluation of Bearing Capacity of a Short Driven Pyramidal-prismatic Pile Using Mathematical Models

The article presents the results of research on mathematical models of bearing capacity of a short driven pile with the pyramidal broadening in the upper part. The research was carried out using the piles of the same length and various sizes of broadening. In order to evaluate the increase of the bearing capacity of a pyramidal-prismatic pile compared with the same prismatic pile the calculations were performed in the software package Plaxis 3D. The basis of the calculation was based on the well-known in soil mechanics the elastic-plastic model of Mohr-Coulomb. According to the data obtained the analysis was made concerning the increase of bearing capacity of short driven piles using a constructive solution - the broadening device at the top proposed by the authors.