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Wyszukujesz frazę "earthquake" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Horizontal motion of a rigid block resting on accelerating subsoil
Autorzy:
Sawicki, A.
Chybicki, W.
Powiązania:
https://bibliotekanauki.pl/articles/241061.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
vibrations
earthquake
gravity structure
Opis:
The horizontal motion of the system: rigid block-accelerating subsoil is analysed, using the most simple approach. First, the method of analysis is described and illustrated for constant coefficient of friction between the block and subsoil. Then, the changing coefficient of friction is taken into account, and its influence on the motion shown. In the next step of analysis, the influence of horizontal force on permanent relative displacement of the block with respect to subsoil is illustrated for constant and changing coefficients of friction. The method presented in this paper form a basis for critical discussion of the Newmark approach, that is a kind of standard in earthquake geotechnics.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 2; 147-160
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Simple model of sinking of breakwater due to earthquake-induced subsoil liquefaction
Autorzy:
Sawicki, A.
Powiązania:
https://bibliotekanauki.pl/articles/240966.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
liquefaction
cyclic loadings
earthquake sinking
Opis:
The paper deals with engineering analysis of breakwater behaviour due to earthquake- induced subsoil liquefaction. First, a simple model enabling analysis of pore-pressure generation in saturated granular soils, due to cyclic loading, is outlined. It is also shown how this model can be applied to the analysis of seabed behaviour during earthquakes. Then, a simple model of breakwater resting on saturated subsoil in which the phenomena of pore-pressure generation and liquefaction take place is described. This model enables estimation of changes of seabed effective reaction due to pore-pressure generation, as well as subsequent sinking of the breakwater due to subsoil liquefaction. Numerical examples illustrate theoretical considerations and show links between breakwater behaviour and earthquake characteristics.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2003, 50, 4; 381-400
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyzing the Impact of Large Dams on Seismicity Patterns around Their Locations
Autorzy:
Parvizishad, Mina
Naseri, Simin
Nabizadeh, Ramin
Bidar, Abdollah Sohrabi
Mahvi, Amir Hossein
Goodarzi, Fatemeh
Powiązania:
https://bibliotekanauki.pl/articles/2097769.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
dam construction
impoundment
seismicity pattern
earthquake
Opis:
Dam construction is one of the most popular solutions for managing water resources. In recent years, changes in patterns of regional seismicity associated with large impoundment dams have raised concerns among environmentalists. In this study, five large dams located in Iran were studied from this perspective. The Gutenberg-Richter, linear regression and T-test were used to examine the seismic changes in the radius of 100 km of each of the dams during a twenty-five-year period before and after the construction of the dams. The results revealed that the seismicity level and relative density of large and small earthquakes in three of these dams have increased after dam construction. A significant difference between the magnitude of earthquakes, as well as the number of earthquakes before and after the construction of dams in the region, was recognized. However, the results of the T-test statistical analysis indicated that the mean depth of the earthquakes and their distance from the dams before and after construction have not changed significantly. Overall, these results indicated that the construction of large impoundment dams has been associated with some changes in patterns of regional seismicity. The findings would guide researchers to further investigate the type of impacts that dam construction may have on seismicity patterns.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2021, 68, 1; 3--17
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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