An assessment of stress-strain state of earth dams with account of elastic-plastic, moist properties of soil and large strains

Mirsaidov, Mirziyod; Sultanov, Takhirjon; Sadullaev, Sh.A.

doi:10.5862/mce.40.7

Cited by 29 publications

(12 citation statements)

References 8 publications

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“…The mechanism of the Airy phase was studied in [6][7][8][9][10][11][12]. Formulas for the frequency characteristics of surface waves in the case of a single-layer model of the earth's crust were obtained in [11,13]. An important consequence of these works is that the period of oscillations, which corresponds to the minimum value of the group velocity, is in good agreement with the maximum of the frequency response, especially in the case when the earthquake source is located near the Earth's surface.…”

Section: /  H ∆mentioning

confidence: 99%

Study of The Seismic Stress State of the "Subgrade - Base" System, Taking Into Account the Formation and Propagation of Surface Seismic Waves

Shayakhmetov¹,

Zhauyt²

2023

Preprint

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The problems of formation and propagation of surface seismic waves in vertically layered and horizontally inhomogeneous media are studied. A mathematical model has been developed for the propagation of surface seismic waves in an inhomogeneous medium based on the use of the fundamental principles of wave dynamics and Fourier transforms. The existence of various types of groups of these waves is proved, and their main properties are studied. It has been established that the reflection coefficients of different groups of a dispersive wave on models of half-spaces (a layered, inhomogeneous medium) with a sharp velocity differentiation are characterized by the same dependence on the angle of incidence as in the absence of dispersion. In the region of the critical angle, which depends on the period of the incident wave, a local decrease in the intensity of wave reflection is observed, which is associated with the origin of the head dispersive wave. It has been found that the reflection coefficients of Rayleigh waves from low-velocity layers, thin (d / λ2 = 0.205) and thick (d / λ2 = 0.82) are approximately 0.2 ± 0.04 and practically do not change with increasing angle of incidence. On the basis of theoretical studies, it was revealed that reflected surface waves carry information both about the elastic properties of the reflecting medium and about the dimensions of the reflecting horizontal inhomogeneity. An experimental dispersion curve of the group velocity of Rayleigh waves on the Central Asia-Caucasus path has been obtained. The seismic stress state of the "subgrade-base" system was studied. Based on the analysis of the results of numerical experiments, it has been established that in order to obtain a complete picture of the seismically stressed state of the subgrade, it is necessary to take into account the contribution to it of each component of the accelerogram of a real earthquake.

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Section: /  H ∆mentioning

confidence: 99%

Study of The Seismic Stress State of the "Subgrade - Base" System, Taking Into Account the Formation and Propagation of Surface Seismic Waves

Shayakhmetov¹,

Zhauyt²

2023

Preprint

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“…Stationarity condition of functional equation ( 9), together with given boundary conditions, should be equivalent to a direct statement of the problem. Then, based on [10,11], for quadratic functional F to a two-dimensional problem can be written as follow…”

Section: Substituting the Value Of  mentioning

confidence: 99%

Influencing of land transport load on structure of backfill arched Road Bridge

et al. 2021

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In this paper, for the objective assessment of stress-strain state parameters of backfill arched road bridge, the research work is carried out, where the model of reinforced concrete, corrugated structure is exposed to modern land transport load. In the course of numerical studies, stresses and deformations in sections of structure and the soil are determined. These studies allow revealing the mechanism of operation of corrugated reinforced concrete structures in the body of an embankment of highways when passing modern transport loads along with them.

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“…To solve this problem a modified method of variable parameters of elasticity is used; it considers the method, proposed in [3,6], where the law of deformation (12) connects total pressure in soil P with volume deformation θ .…”

Section: Algorithm Of Solution Of Problem With Account Of Non-linear mentioning

confidence: 99%

“…According to this hypothesis the transfer from elastic state into plastic one in discussed particle of ambient occurs when the value of intensity of normal stresses i σ in this point reaches the limit of yielding T σ . Hence the state of earth ambient in different points is described differently [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Here the functions of modulus of compression and tension with several dimensionless coefficients, which characterize the degree of changes of modulus of compression and tension, are determined from results of experiments for certain soils [10]. Models [2][3][4][5][6][7][8][9] allow the study of the stress-strain state of structures built of soils with different moisture content.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Stress-Strain State of Earth Dams

Mirsaidov¹,

Sultanov²,

Khodzhaev³

Proceedings of the Eighth International Conference on Engineering Computational Technology

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Mathematical statement, methods and algorithms of solution of the problem of assessment of stress-strain state and dynamic behavior of earth structures are considered in this paper which account for structural features, elastic-plastic and non-linear-moisturing properties of soil under static and dynamic effects. The problem is considered within the limits of plane deformation. The stress-strain state and dynamic behaviour of certain structures under different effects are studied. Some results revealed in the investigation have considerable practical importance.

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An assessment of stress-strain state of earth dams with account of elastic-plastic, moist properties of soil and large strains

Cited by 29 publications

References 8 publications

Study of The Seismic Stress State of the "Subgrade - Base" System, Taking Into Account the Formation and Propagation of Surface Seismic Waves

Study of The Seismic Stress State of the "Subgrade - Base" System, Taking Into Account the Formation and Propagation of Surface Seismic Waves

Influencing of land transport load on structure of backfill arched Road Bridge

Assessment of the Stress-Strain State of Earth Dams

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