| Autor: |
Mirsaidov, M. M., Toshmatov, E. S. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2791 Issue 1, p1-11, 11p |
| Abstrakt: |
The article provides a detailed analysis of the current state of the problem. A mathematical model is presented to assess the dynamic behavior of earth dams under periodic kinematic effects, taking into account the viscoelastic properties of soil, using the Boltzmann-Volterra hereditary theory with the A.R. Rzhanitsyn kernel. To solve the problems considered, the finite element method was used together with complex arithmetic to reduce integro-differential equations to a high-order complex algebraic equation. The accuracy of the method was verified by solving test problems. Steady-state forced vibrations of the Pskem earth dam, 195m high, were studied taking into account the real geometry and various properties of soil under resonant vibration modes. It was revealed that the maximum stress amplitudes in the body of the dam occur not only in the first resonance but they can occur at other dense spectra of eigenfrequencies, due to the interaction between close natural vibration modes. The strength of the dam under kinematic impact was tested using the Coulomb-Mohr theory of strength; the most dangerous sections of the dam were identified in terms of the highest stress and the safety factor for various parts of the dam body. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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