The effect of convex corners on the displacement of restrained excavation walls: a three-dimensional analysis

Articles in Press

Document Type : Research Paper

Authors

Faculty of Civil Engineering, Yazd University, Yazd, Iran

10.22075/jtie.2025.38506.1728

Abstract

In excavation projects, the presence of convex corners makes 2D analyses inaccurate. This study investigates the effect of these corners on the deformation of retaining walls using 3D modeling. The present study uses FLAC3D software for two-dimensional and three-dimensional numerical modeling to study the effect of convex corners on the deformations caused by excavation for walls stabilized by anchor rod method. It also examines the effect of various parameters such as soil type, soil adhesion, pit height and reliability coefficient on the deformation rate of the convex corner. The results of the present study show that the length of the corner-affected area (the area around the convex corner where the values of the three-dimensional displacement ratio at the location of the crown pit is greater than the two-dimensional corresponding value) decreases with the decrease in soil resistance. So, in weak, medium and strong soil, it is 2H, 1.5H and 1.25H respectively. Due to the influence of the three-dimensional geometry of the convex corner, the three-dimensional reliability coefficient values are lower than the corresponding two-dimensional values.

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Main Subjects

Journal of Transportation Infrastructure Engineering

Articles in Press, Accepted Manuscript
Available Online from 21 October 2025

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History

  • Receive Date: 30 July 2025
  • Revise Date: 21 October 2025
  • Accept Date: 21 October 2025

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