Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations

This research investigates the influence of the scale effect on the bearing capacity of fine-grained subsoil under undrained conditions. The analyses were conducted based on laboratory tests of silty clay. Uniformly compacted samples were subjected to an unconfined compression test. The research was...

Descripción completa

Detalles Bibliográficos
Autores principales: Zięba, Zofia, Krokowska, Małgorzata, Wyjadłowski, Marek, Kozubal, Janusz Vitalis, Kania, Tomasz, Mońka, Jakub
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456783/
https://www.ncbi.nlm.nih.gov/pubmed/37629921
http://dx.doi.org/10.3390/ma16165631
_version_ 1785096782221410304
author Zięba, Zofia
Krokowska, Małgorzata
Wyjadłowski, Marek
Kozubal, Janusz Vitalis
Kania, Tomasz
Mońka, Jakub
author_facet Zięba, Zofia
Krokowska, Małgorzata
Wyjadłowski, Marek
Kozubal, Janusz Vitalis
Kania, Tomasz
Mońka, Jakub
author_sort Zięba, Zofia
collection PubMed
description This research investigates the influence of the scale effect on the bearing capacity of fine-grained subsoil under undrained conditions. The analyses were conducted based on laboratory tests of silty clay. Uniformly compacted samples were subjected to an unconfined compression test. The research was performed on cylindrical specimens. Three different variants of the diameter D (38 mm, 70 mm, 100 mm) and the corresponding height H = 2D were analyzed. Based on the tests results, the unconfined compression strength q(u) was determined, and from this, the undrained shear strength c(u) was calculated. The obtained results showed a clear decrease in c(u) with increasing sample size. However, in the existing reference documents, there are no specific guidelines for calculations of bearing capacity with consideration of sample size effect on the soil shear strength. Therefore, this study utilized the laboratory soil test data to calculate the bearing capacity of undrained subsoil, taking into account the seismic impacts, with a particular focus on spread foundations.
format Online
Article
Text
id pubmed-10456783
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-104567832023-08-26 Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations Zięba, Zofia Krokowska, Małgorzata Wyjadłowski, Marek Kozubal, Janusz Vitalis Kania, Tomasz Mońka, Jakub Materials (Basel) Article This research investigates the influence of the scale effect on the bearing capacity of fine-grained subsoil under undrained conditions. The analyses were conducted based on laboratory tests of silty clay. Uniformly compacted samples were subjected to an unconfined compression test. The research was performed on cylindrical specimens. Three different variants of the diameter D (38 mm, 70 mm, 100 mm) and the corresponding height H = 2D were analyzed. Based on the tests results, the unconfined compression strength q(u) was determined, and from this, the undrained shear strength c(u) was calculated. The obtained results showed a clear decrease in c(u) with increasing sample size. However, in the existing reference documents, there are no specific guidelines for calculations of bearing capacity with consideration of sample size effect on the soil shear strength. Therefore, this study utilized the laboratory soil test data to calculate the bearing capacity of undrained subsoil, taking into account the seismic impacts, with a particular focus on spread foundations. MDPI 2023-08-15 /pmc/articles/PMC10456783/ /pubmed/37629921 http://dx.doi.org/10.3390/ma16165631 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zięba, Zofia
Krokowska, Małgorzata
Wyjadłowski, Marek
Kozubal, Janusz Vitalis
Kania, Tomasz
Mońka, Jakub
Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title_full Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title_fullStr Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title_full_unstemmed Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title_short Assessing the Scale Effect on Bearing Capacity of Undrained Subsoil: Implications for Seismic Resilience of Shallow Foundations
title_sort assessing the scale effect on bearing capacity of undrained subsoil: implications for seismic resilience of shallow foundations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10456783/
https://www.ncbi.nlm.nih.gov/pubmed/37629921
http://dx.doi.org/10.3390/ma16165631
work_keys_str_mv AT ziebazofia assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations
AT krokowskamałgorzata assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations
AT wyjadłowskimarek assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations
AT kozubaljanuszvitalis assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations
AT kaniatomasz assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations
AT monkajakub assessingthescaleeffectonbearingcapacityofundrainedsubsoilimplicationsforseismicresilienceofshallowfoundations