TRIAXIAL STUDIES OF GRAY CLAYS IN DIFFERENT LOADING MODES AS A FOUNDATION FOR UNDERGROUND CONSTRUCTION

19th WORLD CONFERENCE OF THE ASSOCIATED RESEARCH CENTRES FOR THE URBAN UNDERGROUND SPACE, Belgrade, Serbia, November 4-7, 2025. (Paper No: 2.20.87,  pp. 452-457)

 

АУТОР(И) / AUTHOR(S): Irina V. Koroleva

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DOI:  10.46793/ACUUS2025.2.20.87

САЖЕТАК / ABSTRACT:

Statement of the problem. The safety of underground structures depends on the reliability of the foundation. When designing foundations of buildings with a developed underground part and foundations of underground structures, the question of the mechanical characteristics of soils arises. The least studied at the moment are gray clays, since in their natural state they occur at significant depths and have not been studied before. The main objective of this study is to identify the features of deformation of gray clays of a damaged structure under triaxial loading at different values of moisture, holding time in a desiccator and loading conditions. To achieve this goal, the following tasks were solved: identical samples of clays of a damaged structure were created; triaxial experimental studies were carried out; the ultimate strength of the samples and deformation characteristics were determined; graphical dependencies of strength, deformation modulus and shear modulus on moisture and loading conditions were constructed. Results. Experimental triaxial studies were performed on samples made of soil with a disturbed structure. The main results of the studies are new data on the development of vertical deformations and general deformation moduli, as well as shear moduli under triaxial loading depending on different soil moisture values, the time of sample holding in a desiccator before testing, the magnitude of lateral pressure and the presence of the first loading stage. Conclusions. The established influence of the factors under consideration on the deformation of gray clay under triaxial compression should be taken into account when calculating the settlement of building foundations and underground structures.

КЉУЧНЕ РЕЧИ / KEYWORDS:

clay soil, triaxial compression, mechanical properties of soil, moisture, foundation

ПРОЈЕКАТ / ACKNOWLEDGEMENT:

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