Dynamic Behavior of a Wall Made of Jointed Bored Piles Reinforced by Anchors in 2D and 3D, Case of the Ain-Naadja Metro Station (Algiers)

Soil reinforcement encompasses a set of techniques aimed at enhancing its mechanical or physical properties by introducing inclusions that work under tension, compression, or flexion. Some of these techniques include soil nailing, anchor tiebacks, micro-piles, bored piles, and ballasted columns. In this study, we analyze the behavior of a wall anchored by five anchor tiebacks (model of the Ain-Naadja Station 02) subjected to seismic excitations based on the Boumerdes 2003 response spectrum. The analysis is carried out using 2D and 3D finite element methods with the dynamic calculation software Plaxis version 20. The obtained results are presented in terms of horizontal stresses, shear stresses, horizontal displacements, and horizontal deformations over time along the wall (piles) at three different positions: the top, middle, and base of the wall. This is done to anticipate the effect of seismic loading on the stability of the structure.