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The Assessment of Dynamic Behavior of Heterogeneous Systems taking into account Non-linear Viscoelastic Properties of Soil

Sultanov, T.Z. ; Khodzhaev, D.A. ; Mirsaidov, M.M.

Inzhenerno-stroitelʹnyĭ zhurnal, 2014-01, Vol.45 (1), p.80-89 [Periódico revisado por pares]

St. Petersburg: St - Petersburg State Polytechnical University Faculty of Civil Engineering

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  • Título:
    The Assessment of Dynamic Behavior of Heterogeneous Systems taking into account Non-linear Viscoelastic Properties of Soil
  • Autor: Sultanov, T.Z. ; Khodzhaev, D.A. ; Mirsaidov, M.M.
  • Assuntos: accelerogram ; Assessments ; Dams ; Dynamic mechanical properties ; Dynamic structural analysis ; Earth ; earth dam ; heterogeneity ; hydro-static pressure ; kinematic effect ; Mathematical analysis ; non-linearity ; Nonlinear dynamics ; Nonlinearity ; Oscillations ; Rheology ; Soil (material) ; Soil mechanics ; soil rheology ; Stress-strain curves ; viscoelasticity
  • É parte de: Inzhenerno-stroitelʹnyĭ zhurnal, 2014-01, Vol.45 (1), p.80-89
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: 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. [PUBLICATION ABSTRACT]
  • Editor: St. Petersburg: St - Petersburg State Polytechnical University Faculty of Civil Engineering
  • Idioma: Inglês

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