Results 291 to 300 of about 125,532 (350)

Arching in Granular Soils

Geomechanics, 2005
Arching is characterized by a stress distribution where the load is transferred from softer to stiffer regions of a structure forming a stable configuration. Since it is a stable arrangement, arching is not a typical limit state problem. However, it can be formulated in a manner that allows using the static theorem of limit analysis to assess the ...
Radoslaw L. Michalowski, Namgyu Park
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Uplift soil–pipe interaction in granular soil

Canadian Geotechnical Journal, 2013
Soil–pipeline interaction for uplift in granular soil is evaluated by means of a two-dimensional, finite element (FE) continuum model with a Mohr–Coulomb (MC) yield surface for peak strength, a strain-softening relationship tied to critical void conditions, and an equivalent modulus that is consistent with soil deformation at maximum uplift resistance.
Jai K. Jung, Thomas D. O’Rourke, Nathaniel A. Olson   +2 more
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Projectile Penetration in Granular Soils

Journal of Geotechnical Engineering, 1991
Results from centrifuge and 1-g model tests of projectile penetration into granular soils are described. Solid spherical projectiles in four calibers were fired into uniform samples of dry sand at approximately 305 m/s. Comparison to full-scale test results verified the suitability of the centrifuge testing technique for this type of problem.
T. Taylor, R.J. Fragaszy, C.L. Ho
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Stiffness of granular soils from field performance

Géotechnique, 1991
In 1985 Burland and Burbidge carried out analyses on over 200 cases of foundations on sand and gravel and developed a new approach to forecasting settlement. This study re-examines these results in order to find out whether a consistent picture can be obtained to evaluate an operational stiffness for a continuous mechanics approach.
BERARDI, RICCARDO, R. LANCELLOTTA
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Dynamic compaction of granular soils

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980
Dynamic compaction was used to improve foundation conditions beneath a large warehouse in Indianapolis, Ind. Approximately 15 ft of fine to medium sand above the water table was densified significantly by dropping a 6.5 ton weight from a height of 40 ft.
Gerald A. Leonards, Robert D. Holtz, William A. Cutter   +2 more
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Interface Behavior of Granular Soils

Engineering, Construction, and Operations in Challenging Environments, 2004
Interface shear zones between particulate materials and continuum elements of man-made or natural materials have not been traditionally considered as shear bands. However, the results of recent micro-scale experimentation and numerical simulations have shown that they are indeed well developed partial shear bands.
J. David Frost, Gregory L. Hebeler, T. Matthew Evans, Jason T. DeJong   +3 more
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Internal Fluidization in Granular Soils

Journal of Geotechnical and Geoenvironmental Engineering, 2014
Internal fluidization, the process whereby granular soil is transformed into a fluid-like state when liquid or gas is pumped into it, is of importance in a number of civil and geotechnical engineering processes, for example, pipe leakage, flow through sheet piling, pile jetting, and spudcan extraction.
Alsaydalani, M., Clayton, C.R.I.
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Material Model for Granular Soils

Journal of the Engineering Mechanics Division, 1971
A mathematical material model for granular soils, based on classical plasticity theory, is proposed. The yield surface combines a generalized ideally plastic Coulomb-Mohr failure envelope with a moving cap, crossing the hydrostatic loading axis, whose position depends on plastic volumetric strain. It is shown how this model can fit laboratory test data
Frank L. DiMaggio, Ivan S. Sandler
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Shock Waves in Granular Soil

Journal of the Soil Mechanics and Foundations Division, 1965
EXPERIMENTAL AND THEORETICAL STUDIES OF SHOCK WAVE PROPAGATION IN AN ELASTICALLY CONFINED, CYLINDRICAL SAND COLUMN ARE DESCRIBED. EXCITATION IS PRODUCED BY AN AIR SHOCK FROM A PNEUMATIC SHOCK TUBE, AND A SPECIAL REINFORCED SPECIMEN CONTAINER IS USED TO RESTRICT RADIAL STRAINS WHICH ALLOWING UNIMPEDED AXIAL MOTION.
Robert D. Stoll, Ibrahim A. Ebeido
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Void Sizes in Granular Soils

Journal of Geotechnical Engineering, 1996
In an earlier paper, the writer presented a simple stochastic model of the grain and pore structure in cohesionless soils and similar materials. Equations that very adequately predict the void ratio as a function of grain-size distribution were derived.
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