Temat: pore pressure - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Rayleigh Waves Transformation in Liquefying Water-saturated Sands
Autorzy:: Staroszczyk, R.
Powiązania:: https://bibliotekanauki.pl/articles/241359.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: Rayleigh surface wave
water-saturated sand
excess pore pressure generation
soil liquefaction
Opis:: The behaviour of a water-saturated sand deposit subjected to dynamic loads induced by the propagation of Rayleigh surface waves is analysed. Cyclic shearing of the saturated sand matrix due to ground motions results in the development of excess pore pressures in the soil and its subsequent liquefaction. The phenomena of pore pressure generation and soil liquefaction are investigated within the framework of a compaction theory for saturated granular media. The results of calculations, carried out by a finite-element method, illustrate the evolution of pore pressures and the development of liquefaction zones in the soil, and show the variation of surface wave parameters with the progressive degradation of the strength of the subsoil.
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2016, 63, 2-3; 173-190
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wave-induced stresses and pore pressures near a mudline
Autorzy:: Sawicki, A.
Staroszczyk, R.
Powiązania:: https://bibliotekanauki.pl/articles/48728.pdf
Data publikacji:: 2008
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: water pressure
wave-induced stress
elasto-plasticity
earth pressure coefficient
soil permeability
pore water saturation
yield condition
seabed mechanics
Opis:: Conventional methods for the determination of water-wave induced stresses in seabeds composed of granular soils are based on Biot-type models, in which the soil skeleton is treated as an elastic medium. Such methods predict effective stresses in the soil that are unacceptable from the physical point of view, as they permit tensile stresses to occur near the upper surface of the seabed. Therefore, in this paper the granular soil is assumed to behave as an elastic-ideally plastic material, with the Coulomb-Mohr yield criterion adopted to bound admissible stress states in the seabed. The governing equations are solved numerically by a finite difference method. The results of simulations, carried out for the case of time-harmonic water waves, illustrate the depth distributions of the excess pore pressures and the effective stresses in the seabed, and show the shapes of zones of soil in the plastic state. In particular, the effects on the seabed behaviour of such parameters as the degree of pore water saturation, the soil permeability, and the earth pressure coefficient, are illustrated.
Źródło:: Oceanologia; 2008, 50, 4; 539-555
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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