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Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations
The uplift pile is an anti-uplift measure in engineering widely used in practice. In order to study the mechanical parameters of the pile and the surrounding soil under the uplift load, a pile uplift model test and relevant numerical test were conducted. Image analysis technique was applied to the m...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10115880/ https://www.ncbi.nlm.nih.gov/pubmed/37076547 http://dx.doi.org/10.1038/s41598-023-33221-z |
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author | Fang, Jianping Lin, Songchao Liu, Kai |
author_facet | Fang, Jianping Lin, Songchao Liu, Kai |
author_sort | Fang, Jianping |
collection | PubMed |
description | The uplift pile is an anti-uplift measure in engineering widely used in practice. In order to study the mechanical parameters of the pile and the surrounding soil under the uplift load, a pile uplift model test and relevant numerical test were conducted. Image analysis technique was applied to the model test to investigate the soil displacements caused by pulling the pile. The load–displacement and pile axial force-lateral friction resistance relationships were investigated at three burial depths. Comparing the model test and numerical test results, it reveals that the pile primarily underwent four stages under the influence of uplift load: initial stage of loading, strain-hardening stage, peak of loading stage, and the strain-softening stage; the soil displacements around the pile exhibited inverted conical shape as the uplift load increases; and obvious soil arching effects could be observed near the ground surface. In addition, the development of force chains and major principal stresses indicated that the pile lateral frictional resistance first increased to its maximum value and then decreased sharply along the depth direction. |
format | Online Article Text |
id | pubmed-10115880 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-101158802023-04-21 Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations Fang, Jianping Lin, Songchao Liu, Kai Sci Rep Article The uplift pile is an anti-uplift measure in engineering widely used in practice. In order to study the mechanical parameters of the pile and the surrounding soil under the uplift load, a pile uplift model test and relevant numerical test were conducted. Image analysis technique was applied to the model test to investigate the soil displacements caused by pulling the pile. The load–displacement and pile axial force-lateral friction resistance relationships were investigated at three burial depths. Comparing the model test and numerical test results, it reveals that the pile primarily underwent four stages under the influence of uplift load: initial stage of loading, strain-hardening stage, peak of loading stage, and the strain-softening stage; the soil displacements around the pile exhibited inverted conical shape as the uplift load increases; and obvious soil arching effects could be observed near the ground surface. In addition, the development of force chains and major principal stresses indicated that the pile lateral frictional resistance first increased to its maximum value and then decreased sharply along the depth direction. Nature Publishing Group UK 2023-04-19 /pmc/articles/PMC10115880/ /pubmed/37076547 http://dx.doi.org/10.1038/s41598-023-33221-z Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Fang, Jianping Lin, Songchao Liu, Kai Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title | Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title_full | Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title_fullStr | Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title_full_unstemmed | Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title_short | Multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
title_sort | multi-scale study of load-bearing mechanism of uplift piles based on model tests and numerical simulations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10115880/ https://www.ncbi.nlm.nih.gov/pubmed/37076547 http://dx.doi.org/10.1038/s41598-023-33221-z |
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