International Journal of Geomechanics: Recent submissions
Now showing items 3941-3960 of 4049
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Modeling of Clay Liner Desiccation
(American Society of Civil Engineers, 2005)The potential for the desiccation of clay liner component of composite liners due to temperature field generated by breakdown of organic matter in municipal solid waste landfills is examined using a model proposed by Zhou ... -
Influence of Optimized Tire Shreds on Shear Strength Parameters of Sand
(American Society of Civil Engineers, 2005)This paper presents the usefulness of optimizing the size of waste tire shreds on shear strength parameters of sand reinforced with shredded waste tires. A relatively, uniform sand has been mixed with randomly distributed ... -
Numerical Modeling of Nonhomogeneous Behavior of Structured Soils during Triaxial Tests
(American Society of Civil Engineers, 2005)The nonhomogeneous behavior of structured soils during triaxial tests has been studied using a finite element model based on the Structured Cam Clay constitutive model with Biot-type consolidation. The effect of inhomogeneities ... -
Effect of Rock Strength Criterion on the Predicted Onset of Sand Production
(American Society of Civil Engineers, 2005)The variation of sanding onset prediction results with the selection of one or another rock strength criterion is investigated. In this paper, four commonly used rock strength criteria in sanding onset prediction and ... -
Analytical Analysis of Rainfall Infiltration Mechanism in Unsaturated Soils
(American Society of Civil Engineers, 2004)To improve the understanding of the influence of hydraulic properties and rainfall conditions on rainfall infiltration mechanism and hence on the pore-water pressure distributions in single and two-layer unsaturated soil ... -
Analyses of Inclined Boreholes in Poroelastic Media
(American Society of Civil Engineers, 2004)Solutions for the borehole problem based on Biot’s poroelasticity theory have shown that drilling through fluid saturated formations, gives rise to time-dependent stress and pore pressure fields in the vicinity of the ... -
Mixed Experimental and Numerical Approach to Evaluation of Material Parameters of Clayey Soils
(American Society of Civil Engineers, 2004)The present contribution reports on a mixed numerical experimental study of the time dependent processes in saturated soils with reference to isotropic consolidation. Owing to its relative simplicity, isotropic consolidation ... -
Performance of a Three-Dimensional Hvorslev–Modified Cam Clay Model for Overconsolidated Clay
(American Society of Civil Engineers, 2004)It is well established that critical state soil mechanics provides a useful theoretical framework for constitutive modeling of soil. Most of the critical state models, including the popular modified Cam clay (MCC) model, ... -
Mixture Theory for a Fluid-Saturated Isotropic Elastic Matrix
(American Society of Civil Engineers, 2004)The theory for a fluid saturated linearly isotropic elastic matrix is still the basis for many geophysical applications, and commonly adopts Biot’s symmetric stress–strain laws for the matrix stress and fluid pressure. ... -
Evaluation of Time-Dependent Behavior of Soils
(American Society of Civil Engineers, 2004)The time-dependent behavior of soils has been investigated extensively through one-dimensional and triaxial test conditions. Most of the observations in literature have focused on the determination of the time-dependent ... -
Finite-Element Approach to the Erosion and Transport of Fine Particles in Granular Soils
(American Society of Civil Engineers, 2004)The increase of the water table level presently occurring in the city of Milan led to some leakage of groundwater in underground facilities and subway tunnels. These structures, in fact, were completed about three decades ... -
Simple Expert System for Evaluation of Nutrient Pollution Potential in Groundwater from Manure Application
(American Society of Civil Engineers, 2004)An expert system for the evaluation of groundwater pollution potential due to leaching of nutrients from land application of manure is developed in this study. The expert system consists of five modules: surface loading, ... -
Stability Factors for Slopes with Nonassociated Flow Rule Using Energy Consideration
(American Society of Civil Engineers, 2004)From the consideration of energy balance at collapse, stability factors were computed for soil slopes with both associated and nonassociated flow rules. The effect of the pore water pressure was also incorporated. The ... -
Characterization of Models for Time-Dependent Behavior of Soils
(American Society of Civil Engineers, 2004)Different classes of constitutive models have been developed to capture the time-dependent viscous phenomena (creep, stress relaxation, and rate effects) observed in soils. Models based on empirical, rheological, and general ... -
Dynamic Stiffnesses of Surface Foundations: An Explicit Solution
(American Society of Civil Engineers, 2004)A new method is suggested to obtain approximate explicit expressions for the dynamic stiffness of rigid foundations on the surface of layered media. The method uses the dynamic stiffness matrices for layered media to compute ... -
Three-Dimensional Finite Element Analysis of Underground Caverns
(American Society of Civil Engineers, 2004)Detailed performance monitoring studies have been carried out for determining the deformations and stress distribution around underground powerhouse caverns in nonhomogeneous rock mass, using three-dimensional finite element ... -
Finite Element Modeling of the Time-Dependent Deformation of a Slope Bounding a Hydroelectric Reservoir
(American Society of Civil Engineers, 2004)The south slope of the Vernago hydroelectric reservoir in northern Italy is subjected to a slow time-dependent movement that produced some structural damages in a service shaft located within it. With their continuation, ... -
Three-Dimensional Nonlinearly Varying Rectangular Loads on a Transversely Isotropic Half-Space
(American Society of Civil Engineers, 2004)In engineering situations, loads applied to the four corners of a rectangle might have different values and might not be uniformly or linearly distributed. A configuration of linearly or nonlinearly varying loads with ... -
Modeling Nonlinear Anisotropic Elastic Properties of Unbound Granular Bases Using Microstructure Distribution Tensors
(American Society of Civil Engineers, 2004)The resilient properties of unbound aggregate bases are important parameters in the design of asphalt pavements. Previous studies have shown that these resilient properties exhibit nonlinear and transverse anisotropic ... -
Wellbore Stability Analysis: From Linear Elasticity to Postbifurcation Modeling
(American Society of Civil Engineers, 2004)This paper reviews some of the progress made on wellbore stability modeling during the last two decades. First we demonstrate the improvement made on mud-pressure predictions by moving from analytic elastic solutions to ...