Assessment of Different Modeling Techniques for Soil Nailing System

Volume Title: ICASGE2025

Paper ID : 1101-ICASGE-FULL (R1)

¹faculty of engineering Helwan university mataria branch, department of geotechnical engineering

²Reinforced Concrete Structures (RCS)

³Faculty of Engineering, Mataria, Helwan University, Egypt

⁴15 May Institute, Egypt

Slope failures are a common issue in geotechnical design, suitable stabilization techniques must be used to reduce the possibility of slope failures. Soil nailing is one of the soil reinforcement techniques that have been used for the last four decades, due to its technical compatibility, the convenience of construction, and comparatively low maintenance requirements. The stability of a soil-nailed slope is strictly related to slope geometry and nail parameters. This study is an attempt to assess the most suitable model to simulate numerically the soil nailing system. Four models were adopted to simulate the soil nails using PLAXIS-2D. Two constitutive models Mohr-Coulomb (MC), and Hardening soil (HS), with two different methods to represent the soil nails (geogrid element, and plate element), were utilized. Results show the superiority of using the HS model whether using a plate or geogrid element to estimate the nail displacement as well as the axial force in each nail compared to the field data.

Soil-nail; Walls simulation; Finite Element; Plaxis-2D; Horizontal displacement; Constitutive models; Slope Stability

Geotechnical Engineering (GEO)