Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Granular soil"”.
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Flow Behavior of Granular Soil and Impounded Fly Ash Slurries
… water mismanagement, shear failure of foundation soils and shear of compressible low-permeability tailings placed near the perimeter of the impoundment. Numerous studies have been carried out to characterize the failed tailings and ash materials and understand the failures of slurries. Tests …
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The break-out behaviour of a suction anchor embedded in a granular soil.
The thesis describes an experimental investigation into the uplift behaviour of hemispherical suction anchors embedded in saturated sand. Anchor types are briefly discussed. Some existing theories related to plate-type anchors, for uplift foundations, and inverted cup-type surface suction anchors …
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Investigation of the elasto-plastic response of granular soil due to cyclic padfoot loading
Includes bibliographical references (leaves 86-87).
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Application of a discrete element model to the analysis of granular soil recovery in an offshore tubular vibrocore
… to grow and become ever more relevant. Seabed soil sampling is crucial in deep-water engineering projects or geological studies where a detailed knowledge of the seabed geology is required. Deep-sea vibrocoring is a relatively new offshore sampling technique. The system consists of a vertical, …
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Settlement of Structures on Granular Soils Subjected to Static and Earthquake Loads
… of static settlement records of footings on granular soils is presented. Records that involve settlement versus pressure relationships are used to develop an empirical method that explicitly consider, beside the other factors, the effect of stress level on settlement. The method is upgraded …
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Seismic Response and Liquefaction of Saturated Sands
… of saturated sands. Method treats the saturated granular soil system as a two-phase nonlinear medium with constituent materials being the granular solid skeleton and the pore water. An elasto-plastic stress-strain rule is developed to simulate the behavior of soils under cyclic stresses. A two …
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Physical modelling of landslides in loose granular soils
… subsequent consequences of landslides in a loose-granular soil were investigated. The investigation was conducted using small-scale geotechnical centrifuge models, and a new flume facility developed to examine landslide behavior in a reduced-scale model. The first hypothesis explored in this …
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Probabilistic Post-Liquefaction Residual Shear Strength Analyses of Cohesionless Soil Deposits: Application to the Kocaeli (1999) and Duzce (1999) Earthquakes
Liquefaction of granular soil deposits can have extremely detrimental effects on the stability of embankment dams, natural soil slopes, and mine tailings. The residual or liquefied shear strength of the liquefiable soils is a very important parameter when evaluating stability and deformation of …
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Micromechanics of Granular Media: A Fundamental Study of Interphase Systems
… a manufactured inclusion that is surrounded by granular soil. These regions are ubiquitous in civil infrastructure and often are components of large-scale composite systems. The interphase region influences load-deformation behavior of the entire composite system. However, mechanisms that …
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The response of a suction anchor group to various applied loadings.
… discussed. The tests were conducted in saturated granular soil, contained in a 1.8 m diameter tank, in both loose and dense states. The model anchors and the test apparatus were instrumented so that the pore pressure distribution due to puitping, the water flow rate, and anchor load and …
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Seismic response of wharf structures supported in liquefiable soil
… of wharf structures supported on loose granular waterfront fills that are susceptible to liquefaction during seismic events and considers the effectiveness of pre-fabricated Vertical (PV) drain systems in mitigating potential damage. The analyses are based on non-linear finite element …
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Resistance of a granular medium to normal impact of a rigid projectile
… of right-cylindrical projectiles into dry granular soil (Ottawa sand). Rigid projectiles were impacted into the soil at velocities less than 1000 ft/sec. Past theories for predicting penetration in soils have almost exclusively been based upon the impact velocity and the corresponding …
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Landslide-pipeline interaction for onshore slopes in silty sand
… pipelines must be designed to withstand the soil forces created by landslides, among other geohazards. The quantification of soil forces on buried pipe, termed strain demand, can take the form of a simplified Winkler-beam style interaction, more commonly called soil-springs. Despite this …
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Liquefaction and ring shear device
… by earthquakes or heavy rainfall in saturated granular soils have produced great damage in landslide-prone areas worldwide. A major aspect that needs more study is how the 'residual strength' remaining in the liquefied material evolves at the high strain levels imposed as the slide progresses. …
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Experimental investigation of leakage-induced pipe erosion outside of pipe leaks
… was being removed as a result of abrasive soil action caused by the pipe leak itself. When pressurised water distribution pipes fail, they emit high velocity jets of water into the surrounding soil bed. Research has shown that high velocity jets of water entering a granular soil bed have …
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Frequency- and pressure-dependent dynamic soil properties for seismic analysis of deep sites
… techniques for evaluating the response of soil deposits to strong earthquake motions employ numerical methods, initially developed for the solution of linear elastic, small - strain problems. Various attempts have been made to modify these methods to handle nonlinear stress - strain …
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Modelo constitutivo basado en la teoría de la plasticidad generalizada con la incorporación de parámetros de estado para arenas saturadas y no saturadas
… en la modelización constitutiva de los suelos granulares saturados y parcialmente saturados desde la perspectiva de los parámetros de estado. La ecuación constitutiva basada en la Plasticidad Generalizada ha sido extendida con el objeto de reproducir el comportamiento tenso-deformacional de los …