A comprehensive FE study for design of anchored wall systems for deep excavations

• A code is developed that automatically seeks optimal design for soil-anchor walls. • Figures and tables are proposed for preliminary design of soil-anchor walls. • A GA-PSO formula is proposed for estimating ground movements for soil-anchor walls. • The estimated displacements are helpful to choose instrumentations for monitoring. Anchored wall system is one of the common methods used for deep excavation stabilization adjacent to sensitive structures in urban areas. A key aspect of the stability analysis of deep excavations is the amount of deformations occurring on the facing wall and the adjacent structures. In this research, a large number of parametric studies considering all aspects of soil-structure interaction is carried out for different excavation geometries to find the optimal design, and the outcome is shown in the form of design tables and charts. Also, by a GA-PSO algorithm and using the large database obtained from the numerical simulations, a simple equation is developed that can predict the deflections caused by deep excavations. The results of the proposed equation demonstrate high accuracy and marked consistency with the algorithm results, numerical analysis outcome, and real case s data.