Numerical modeling of the interaction of bored micro piles with the substrate

Abstract

The paper describes the results of a numerical simulation of micro-pile tests using the PLAXIS 2D software package. The purpose of the simulation in this article is to determine the bearing capacity of the micro pile in static tests. Axisymmetric models of a 500 mm wide and 31 m long micro pile were used in the calculation. The staged loading of the pile in the program was simulated by increasing the load on the pile by 145 kN. The main monitored calculation parameters were the magnitude of the applied load and the pile settlement. As a result, load-settlement diagrams were plotted from the pile tests. The bearing capacity of the piles was determined based on a numerical simulation of the pile and the ground in the PLAXIS 2D software package and compared with field data. This geotechnical investigation is important for understanding the soil-structure interaction on difficult and problematical soil ground conditions related to the construction sites.