https://doi.org/10.1140/epjp/s13360-024-05495-3
Regular Article
Seismic interaction of concrete cantilever retaining wall and backfill considering hydrodynamic pore water pressure
Department of Civil Engineering, Faculty of Civil Engineering and Architecture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Received:
4
March
2024
Accepted:
25
July
2024
Published online:
10
August
2024
This paper investigates excessive dynamic lateral earth pressures on retaining structures due to hydrodynamic pore water pressure caused by earthquakes considering nonlinear soil-structure interaction. The seismic-induced pore water pressure in saturated backfill on retaining walls is significantly influenced by soil characteristics, a factor often neglected in conventional methods. Accordingly, a nonlinear numerical model of a cantilever retaining wall and backfill was developed using the OPENSEES framework, considering cohesive and cohesionless soils with three different relative densities. Moreover, the earthquake-induced excess pore water pressure was also obtained from the model developed in this study. The model's validity was confirmed by comparing its results with experimental data obtained from literature. A parametric study was performed to compare the distributions of hydrodynamic pore water pressure, total lateral earth pressure, and bending moments along the retaining wall height with those of the conventional methods. The results obtained from this study highlight the necessity of considering dynamic soil-retaining wall interaction in the numerical model for calculating realistic lateral pressure in the saturated backfills. It was shown that conventional methods overestimate and underestimate excess pore water pressures for clayey and sandy soils, respectively.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
