International Journal of Geomechanics: Recent submissions
Now showing items 3661-3680 of 4049
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Numerical Simulation of the Influence of Initial State of Sand on Element Tests and Micropile Performance
(American Society of Civil Engineers, 2011)This paper presents a state-dependent constitutive model for sand formulated within the critical-state framework and its implementation into a numerical analysis (FLAC3D) program. The implemented model was verified by using ... -
Influence of Precipitates on Hydraulic Performance of Permeable Reactive Barrier Filters
(American Society of Civil Engineers, 2011)A study was conducted to elaborate a predictive model that deals with the hydraulic conductivity reduction of permeable reactive barriers (PRBs) used for the in situ treatment of contaminated groundwater. As PRBs are ... -
Undrained Stability of Footings on Slopes
(American Society of Civil Engineers, 2011)Solutions for the ultimate bearing capacity of footings on purely cohesive slopes are obtained by applying finite element upper and lower bound methods. In a footing-on-slope system, the ultimate bearing capacity of the ... -
Simulation of Soil Behavior under Blast Loading
(American Society of Civil Engineers, 2011)A viscoplastic cap model was previously developed to address the high strain rate effect on soil behaviors. Although the model is an improvement over the inviscid cap model, it does not update soil density and bulk modulus ... -
General Strength Criterion for Geomaterials Including Anisotropic Effect
(American Society of Civil Engineers, 2011)The strengths of geomaterials and their variation under different factors are investigated in this paper. First, a general isotropic variation of a strength criterion is proposed for describing the critical state and peak ... -
Investigation of Load-Transfer Mechanisms in Geotechnical Earth Structures with Thin Fill Platforms Reinforced by Rigid Inclusions
(American Society of Civil Engineers, 2011)The reinforcement of soft soils by rigid inclusions is a practical and economical technique for wide-span buildings and the foundations of embankments. This method consists of placing a granular layer at the top of the ... -
Modeling the Behavior of Geosynthetic Encased Columns: Influence of Granular Soil Constitutive Model
(American Society of Civil Engineers, 2012)Using a high-strength geosynthetic for encasement of granular columns increases the strength of a given column and improves its stress-displacement response. This paper describes the results from a series of three-dimensional ... -
Sydney Soil Model. II: Experimental Validation
(American Society of Civil Engineers, 2011)This paper presents simulations of the mechanical behavior of reconstituted and natural soils using a new model presented in a companion paper and referred to as the “Sydney soil model.” It is demonstrated that the performance ... -
Special Issue on Environmental Geotechnology: Contemporary Issues
(American Society of Civil Engineers, 2011) -
Use of Material Interfaces in DEM to Simulate Soil Fracture Propagation in Mode I Cracking
(American Society of Civil Engineers, 2011)Mode I fracture is common in geomechanics in desiccation cracking, hydraulic fracture, and pressuremeter testing. The cohesive crack model has been used extensively and successfully in numerical modeling of such fracture ... -
Effect of Particle Grading on the Response of an Idealized Granular Assemblage
(American Society of Civil Engineers, 2011)The effects of particle-size distribution on a granular assemblage’s mechanical response were studied through a series of numerical triaxial tests using the three-dimensional (3D) discrete-element method. An assemblage was ... -
Pattern of Two-Phase (DNAPL-Water) Flow through Single Fracture under Temporal Evolution of Aperture
(American Society of Civil Engineers, 2011)Coupling of two-phase flow with mechanical deformation has important applications in many fields, including dense nonaqueous phase liquid (DNAPL)–water transportation through the subsurface. To understand and couple the ... -
Seismic Behavior of Soil-Pile-Structure Interaction in Liquefiable Soils: Parametric Study
(American Society of Civil Engineers, 2011)Nonlinearity of the soil medium plays a very important role on the seismic behavior of soil-pile-structure interaction. The problem of soil-pile-structure interaction is further complicated when the piles are embedded in ... -
New Models for Strength and Deformability Parameter Calculation in Rock Masses Using Data-Mining Techniques
(American Society of Civil Engineers, 2011)Due to the inherent geological complexity and characterization difficulties in rock formations, the evaluation of geomechanical parameters is very complex, mostly in the initial project stages and in small-scale geotechnical ... -
Consolidation of an Anisotropic Compressible Poroelastic Clay Layer by Axisymmetric Surface Loads
(American Society of Civil Engineers, 2011)An analytical solution of the fully coupled system of equations governing the axisymmetric quasistatic deformation of a poroelastic medium with anisotropic permeability and compressible fluid and solid constituents is ... -
Limitations in the Constitutive Modeling of Unsaturated Soils and Solutions
(American Society of Civil Engineers, 2011)Over the past six decades, significant attention has been paid to the elastoplastic behavior of unsaturated soils. In the past two decades alone, elastoplastic theory for unsaturated soils has been established and experimental ... -
Proposal for Standardization of Pull Tests on Rock Joints
(American Society of Civil Engineers, 2011)This note intends to approach the mechanical characterization of rock joints, emphasizing the application of pull tests, which are an economic and simple type of shear experiments. Explanation is given on the drawbacks ... -
Joined Influences of Nonlinearity and Dilation on the Ultimate Pullout Capacity of Horizontal Shallow Plate Anchors by Energy Dissipation Method
(American Society of Civil Engineers, 2011)The ultimate pullout capacity (UPC) and the shape modification factors of horizontal plate anchors were calculated by using upper-bound limit analysis, in which the assumptions of both a nonlinear failure criterion and the ... -
Validation of Coupled Simulation of Excavations in Saturated Clay: Camboinhas Case History
(American Society of Civil Engineers, 2011)This paper presents the results of an elastoplastic finite-element back analysis of an excavation made on a saturated soft organic clay deposit in Rio de Janeiro, Brazil. The excavation was conducted as part of an urbanization ... -
Sydney Soil Model. I: Theoretical Formulation
(American Society of Civil Engineers, 2011)In this paper a theoretical study of the behavior of structured soils, including both clays and sands, is presented. A new model, which is referred to as the “Sydney soil model,” is formulated within the framework of ...