Comparative Analysis of Numerical and Analytical Approaches in the Calculation of Bored Piles Bearing Capacity

The bearing capacity of axially loaded bored piles depends on pile geometry, soil mechanical parameters and pile installation methods. This research analyzes the influence of the pile length-to-diameter ratio (L/D) on the distribution of bearing capacity in a single bored pile between the frictional resistance along the shaft and the base resistance at the tip. The numerical analysis was conducted using the Plaxis 2D software package (Bentley Systems). Results were obtained from numerical models with L/D ratio variations ranging from 3 to 25. The obtained results show a significant dependence of the bearing capacity distribution on the geometric ratio, with a statistically confirmed average deviation of 4.50% compared to analytical methods. This research enables a more precise prediction of pile bearing capacity and provides practical implications for optimizing bored piles geometry in geotechnical engineering.