Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The Assessment of Dynamic Behavior of Heterogeneous Systems taking into account Non-linear Viscoelastic Properties of Soil
The paper reviews in detail the modern state of the calculation problem for non-linear rheological properties of soil in making an assessment of the stress-strain state of ground structures. The mathematical statement, methods and algorithms to assess the dynamic behavior of earth structures taking into account heterogeneous specific features of a structure, linear, non-linear-elastic, non-linear-viscoelastic properties of soil under different dynamic effects are given. The result of a dynamic calculation is the study of unsteady forced oscillations of a number of earth dams taking into consideration non-linear viscoelastic properties of soil and heterogeneous specific features of a structure. The obtained results permit us to reveal several mechanical effects of theoretical and practical value. It was revealed that under high-frequency intensive effect the character of structures oscillations having low-frequency specter has three pronounced stages: an initial one that is characterized with low amplitudes, transitional one, when the swinging of structure occurs; and the stage of free oscillation with realized amplitude and frequency of own vibrations. In spite of the high intensity of high-frequency effect, which causes large stresses in the body of the discussed dams, the calculation of non-linear strain in the material does not greatly distort the pattern of linearly elastic design.
The Assessment of Dynamic Behavior of Heterogeneous Systems taking into account Non-linear Viscoelastic Properties of Soil
The paper reviews in detail the modern state of the calculation problem for non-linear rheological properties of soil in making an assessment of the stress-strain state of ground structures. The mathematical statement, methods and algorithms to assess the dynamic behavior of earth structures taking into account heterogeneous specific features of a structure, linear, non-linear-elastic, non-linear-viscoelastic properties of soil under different dynamic effects are given. The result of a dynamic calculation is the study of unsteady forced oscillations of a number of earth dams taking into consideration non-linear viscoelastic properties of soil and heterogeneous specific features of a structure. The obtained results permit us to reveal several mechanical effects of theoretical and practical value. It was revealed that under high-frequency intensive effect the character of structures oscillations having low-frequency specter has three pronounced stages: an initial one that is characterized with low amplitudes, transitional one, when the swinging of structure occurs; and the stage of free oscillation with realized amplitude and frequency of own vibrations. In spite of the high intensity of high-frequency effect, which causes large stresses in the body of the discussed dams, the calculation of non-linear strain in the material does not greatly distort the pattern of linearly elastic design.
The Assessment of Dynamic Behavior of Heterogeneous Systems taking into account Non-linear Viscoelastic Properties of Soil
T.Z. Sultanov (Autor:in) / D.A. Khodzhaev (Autor:in) / M.M. Mirsaidov (Autor:in)
2014
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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| British Library Conference Proceedings | 2000
Assessment of dynamic behaviour of earth dams taking into account large strains
| DOAJ | 2019
| British Library Online Contents | 2000