3D Anchored Retaining Wall Stability Analysis

DOI

10.2991/978-94-6463-900-1_62How to use a DOI?

Keywords

retaining; tieback; 3D; stability

Abstract

Anchored retaining walls, widely used around the world, are designed for retain soil masses. They are an efficient alternative to oppose earth-pressures with safety, offering a rigid facing that minimizes displacements. When implementing these retaining structures, the construction sequencing involves descending execution in alternating stability berms, so that the facing structure does not lose support, thus increasing safety during execution. In general, the most critical stages in terms of stability refer to the construction scenarios. This study presents a detailed analysis of the geotechnical stability of an anchored retaining wall, aiming to analyze impacts of construction sequence of excavation in alternating berms, using limit equilibrium method in three dimensions. The wall, approximately 15 m high, is set on a layer of decomposed mafic rock. The 3D numerical simulations were performed using the Slide3 software, with shear strength parameters obtained from triaxial tests and field geological mapping. Traditionally, two-dimensional (2D) stability analysis are widely used but sometimes do not adequately represents the excavation sequence nor represent the stability berms geometry and spacing, making three-dimensional (3D) analysis indispensable for a more accurate and realistic study. The evaluated scenarios aim to verify the stability during its execution, incorporating the real three-dimensional effects of the berms, ensuring the structure’s safety in both temporary scenarios and long term.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Thiago Cruz Bretas
AU  - Ariadne Martins Silva
AU  - Gabriel Mendes Cabral
AU  - Lucas Guimarães Carvalho
PY  - 2025
DA  - 2025/12/07
TI  - 3D Anchored Retaining Wall Stability Analysis
BT  - Proceedings of the Rocscience International Conference 2025 (RIC 2025)
PB  - Atlantis Press
SP  - 623
EP  - 631
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-900-1_62
DO  - 10.2991/978-94-6463-900-1_62
ID  - Bretas2025
ER  -