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Experimental and theoretical study of strength and stability of soil
This work presents the experimental results of the strength of sands and clay soils in the following conditions: plane shear, triaxial stress state, with passive and active loading. The obtained experimental results are compared with existing theories of strength and the reasons for their non-conformity are identified. Experimental data on the determination of the position of shear surfaces with active and passive resistance of soils is analysed. A new concept of the theory of soil strength is considered, which allows to take into account the fundamental parameters of the strength of soils: the angle of internal friction, specific adhesion, and lateral pressure ratio. Given analytical expressions allow one to determine the stress state at the sites rejected with respect to the main stresses. The definition of the physical essence of the concept of lateral pressure coefficient for soils is given. Also described are the results of experiments to determine the critical load on soil having the shape of a truncated cone, where the angles of deflection of the shear surfaces have been experimentally determined, on the basis of which analytical expressions have been obtained that allow prediction of the critical load. The book provides methods for solving various geotechnical problems using the theory of soil strength proposed by the authors. The book is intended for professionals working in the fields of soil mechanics and geotechnics, as well as for students and academics in engineering, earth and soil sciences and construction.
Askar Khasanov is Professor at the Samarkand State University and Director of Geofundamentproject LLC. He is also President of the Geotechnical Society of the Republic of Uzbekistan and member of the Technical Committee on geotechnical problems of conservation of monuments of Architecture. In 2012, he was awarded the N.M. Gersevanov Medal for scientific and applied work in the field of geotechnics by the Russian Society for Soil Mechanics, Geotechnics and Foundation Engineering RSSMGFE. Zokhir Khasanov works at the Samarkand State University and is also Secretary General of the Geotechnical Society of the Republic of Uzbekistan.