Results 241 to 250 of about 44,109 (294)

Liquefaction flow behavior of Guamo sand

2015
In soil mechanics there are many unknowns about the behavior of materials and even more great uncertainty generated sands, due to its gradation and shape of the grains is sometimes difficult to know their behavior and especially when trying to study by tests in laboratory.
Jimenez Jiménez Omar Javier, Lizcano Peláez Arcesio   +1 more
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Liquefaction and flow failure during earthquakes

Géotechnique, 1993
Two aspects of seismically-induced liquefaction are discussed which are of vital engineering significance: the triggering condition and the consequences of liquefaction. The triggering condition is examined with respect to liquefaction analysis, note being taken of the onset condition which is governed by cyclic strength.
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Flow liquefaction instability prediction using finite elements

Acta Geotechnica, 2014
In this paper, a mathematical criterion based on bifurcation theory is developed to predict the onset of liquefaction instability in fully saturated porous media under static and dynamic loading conditions. The proposed liquefaction criterion is general and can be applied to any elastoplastic constitutive model. Since the liquefaction criterion is only
Mohammadnejad, Toktam, Andrade, José E.   +1 more
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Liquefaction flow slide at horizontal ground

2005
A liquefaction flow slide is an instability in loosely packed saturated sand or silt after liquefaction under monotonic loading. The conditions for such a flow slide are discussed. The relevance of these conditions is illustrated by application to slope failure.
De Groot M.B., Korff M., Pachen H.M.A.
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Constitutive Modeling of Flow Liquefaction and Cyclic Mobility

Computer Simulation of Earthquake Effects, 2000
Flow liquefaction is due to contractive response of loose granular soils, while cyclic mobility is related to both contractive and dilative response of granular soils. These two failure mechanisms may occur in a single soil, depending on the density and confining pressure applied.
X. S. Li, H. Y. Ming, Z. Y. Cai
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Unified modeling of flow liquefaction and cyclic mobility

Soil Dynamics and Earthquake Engineering, 2000
Abstract Flow liquefaction and cyclic mobility are two different phenomena that are encountered during strong earthquakes. Flow liquefaction is associated with the contractive behavior of loose granular materials and cyclic mobility is associated with the dilative response of both loose and dense granular materials at low confining stresses.
Li, XS, Ming, HY
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Parameters describing flow liquefaction of soils

2005
The paper presents the results of comprehensive laboratory test programme carried out on various soils. Monotonic undrained triaxial tests were executed on specimens subjected to isotropic and anisotropic consolidation. Some parameters based on mean effective stress values at specific stages of a test were used for the sake of quantitative analysis of ...
Lipiński M.J., Wolski W.
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Undrained shear strength for liquefaction flow failure analysis

Canadian Geotechnical Journal, 1995
An important factor in evaluating the stability of hydraulic fills against flow sliding is the undrained steady-state strength mobilized in the field. This paper proposes an empirical relationship between three factors: the undrained strength back-calculated from fills that failed by flow sliding, equivalent clean sand normalized blow-count values, and
J.-M. Konrad, B.D. Watts
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Modeling Delayed Flow Liquefaction Initiation after Cyclic Loading

Geotechnical Earthquake Engineering and Soil Dynamics V, 2018
Ground shaking during earthquakes can be a prominent cause of strength loss in loose saturated soils. In some cases, uncontrolled pore pressure build-up and liquefaction may occur with a time lag with respect to strong ground motion, especially when the time-dependent properties of the soil interact with the constraints brought by undrained and/or ...
Shi Z., Marinelli F., Buscarnera G.
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Liquefaction of coal in a flowing-solvent reactor

Fuel, 1991
Abstract A flowing-solvent liquefaction reactor has been used to examine the primary solubilization potential of a range of coals. The reactor configuration allows the suppression of secondary reactions by sweeping the heated zone with a continuous flow of solvent. The design of the system combines low thermal inertia and direct electrical resistance
Jon R. Gibbins, Rafael Kandiyoti
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