Pseudo-Static Analytical Model For The Static And Seismic Stability Of Dry Stone Retaining Walls

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Pseudo-Static Analytical Model For The Static And Seismic Stability Of Dry Stone Retaining Walls
Journal
Proceedings of the 7th World Congress on Civil, Structural, and Environmental Engineering (CSEE’22)
Conference
7th International Conference on Geotechnical Research and Engineering
Title
Pseudo-Static Analytical Model For The Static And Seismic Stability Of Dry Stone Retaining Walls
Authors
N. Savalle, E. Vincens, P.B. Lourenço
Date
September 17, 2022
Highlights
  • Static and pseudo-static analytical model for dry-stone retaining walls
  • Accounts for both sliding and overturning and the combination of them
  • Accounts for the presence of cohesive soils, water and additional payloads
DOI
10.11159/icgre22.138
ABSTRACT

Dry stone retaining walls are made of rubble stones assembled without mortar. They have shaped many regions worldwide and nowadays constitute a high cultural value, aside from their original operational role (agricultural terraces or transportation networks). However, given their high number and old age, they currently need maintenance, whereas only a few tools are available to assess their stability. In particular, the literature lacks a design tool that accounts for seismic loads. In this paper, a pseudo-static approach based on Coulomb’s wedge theory is described in detail. General effects of cohesion, water pore pressure and geometrical features of the backfill are considered. On the other hand, the specificities of dry stone retaining walls are introduced through new parameters, whose values are extracted from laboratory and in-situ experiments.