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Impact of temperature variations on soil-foundation interface behavior

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Parent Category: 2026

Category: Content №3 2026

Created on 26 June 2026

Last Updated on 26 June 2026

Published on 30 November -0001

Written by S. Benayad, Y. Sadek, F. Kadri

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Authors:

S. Benayad*, orcid.org/0000-0001-5717-5846, University of Bechar-Tahri Mohamed, Fimas Laboratory, Béchar, Algeria; University of Bechar-Tahri Mohamed, Faculty of Technology, Department of Civil Engineering and Hydraulics, Béchar, Algeria, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Y. Sadek, orcid.org/0000-0002-9085-2156, University of Bechar-Tahri Mohamed, Fimas Laboratory, Béchar, Algeria; University of Bechar-Tahri Mohamed, Faculty of Technology, Department of Civil Engineering and Hydraulics, Béchar, Algeria

F. Kadri, orcid.org/0009-0001-5139-6143, University of Bechar-Tahri Mohamed, Fimas Laboratory, Béchar, Algeria, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2026, (3): 050 - 055

https://doi.org/10.33271/nvngu/2026-3/050

Abstract:

Purpose. The aim of the study was to investigate the reaction of the soil-foundation interface to variations in temperature. This study examines the impact of temperature variations on the stress distribution at the foundation-soil interface, which is crucial in the presence of a heat source or in regions with considerable thermal variations.

Methodology. A contact and friction law using the penalty method is employed with finite element modeling of the interaction between an elastoplastic soil (Mohr-Coulomb criterion) and a rigid reinforced concrete foundation with elastic behavior. A thermomechanical coupling is considered to analyze the effects of temperature on the soil-foundation interaction, enabling a detailed study of the system’s behavior under various conditions.

Findings. The results indicate that changes in soil temperature have a notable effect on how contact stresses are distributed at the foundation-soil interface. Such variations can influence the overall performance and stability of foundations, especially under conditions where thermal fluctuations are pronounced.

Originality. This work, in addition to finite element modeling of all nonlinearities (geometrical, material, and contact ones), presents the thermomechanical coupling method, which allows for precise analysis of the temperature’s impact on the soil-foundation interaction, an aspect often overlooked in conventional research.

Practical value. The results are valuable for engineers responsible for foundation design, particularly in areas subjected to significant temperature variations, whether due to natural phenomena (such as geothermal hot water) or industrial activities (such as underground furnaces for material processing), including energy production sites. By considering thermal effects in the foundation design, it is possible to reduce risks associated with thermal changes in the soil and foundations, thereby improving the stability and longevity of the infrastructure.

Keywords: footing-soil interaction, friction, temperature change, thermomechanical coupling

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