Passive earth pressure on vertical rigid walls with negative wall friction coupling statically admissible stress field and soft computing
Article
Article Title | Passive earth pressure on vertical rigid walls with negative wall friction coupling statically admissible stress field and soft computing |
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ERA Journal ID | 201487 |
Article Category | Article |
Authors | Shiau, Jim, Nguyen, Tan and Bui-Ngoc, Tram |
Journal Title | Scientific Reports |
Journal Citation | 14 |
Article Number | 21322 |
Number of Pages | 23 |
Year | 2024 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2045-2322 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/s41598-024-72094-8 |
Web Address (URL) | https://www.nature.com/articles/s41598-024-72094-8 |
Abstract | It is well known that the roughness of a wall plays a crucial role in determining the passive earth pressure that is exerted on a rigid wall. While the effects of positive wall roughness have been extensively studied in the past few decades, the study of passive earth pressure with negative wall friction is rarely found in the literature. This study aims to provide a precise solution for negative friction walls under passive wall conditions. The research is initiated by adopting a radial stress field for the cohesionless backfill and employs the concept of stress self-similarity. The problem is then formulated in a way that a statically admissible stress field be developed throughout an analyzed domain using a two-step numerical framework. The framework involves the successful execution of numerical integration, which leads to the exploration of the statically admissible stress field in cohesionless backfills under negative wall friction. This, in turn, helps to shed light on the mechanism of load transfer in such situations so that reliable design charts and tables be provided for practical uses. The study continues with a soft computing model that leads to more robust and effective designs for earth-retaining structures under various negative wall frictions and sloping backfills. |
Keywords | Negative wall friction; Admissible stress feld; Passive earth pressure; Sof computing |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400502. Civil geotechnical engineering |
Byline Affiliations | School of Engineering |
Ton Duc Thang University, Vietnam | |
Van Lang University, Viet Nam |
https://research.usq.edu.au/item/z9743/passive-earth-pressure-on-vertical-rigid-walls-with-negative-wall-friction-coupling-statically-admissible-stress-field-and-soft-computing
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