International Journal of Geomechanics: Recent submissions
Now showing items 3861-3880 of 4049
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Undrained Bearing Capacity of Two-Strip Footings on Spatially Random Soil
(American Society of Civil Engineers, 2006)A probabilistic study on the interference of two parallel rough rigid strip footings on a weightless soil with a randomly distributed undrained shear strength performed. The problem is studied using the random finite element ... -
Steady-State Diffusion–Advection by Exponential Finite Elements
(American Society of Civil Engineers, 2006)Conventional finite-element solutions of the diffusion–advection equation exhibit numerical oscillations around the exact solution in the presence of strong advective transport. Stabilized methods modifying the standard ... -
Double Strain Softening and Diagonally Crossing Shear Bands of Sand in Drained Triaxial Tests
(American Society of Civil Engineers, 2006)A comprehensive understanding of the shear behavior of sand in the context of shear band development has not been achieved yet in spite of many detailed research works on each specified subject. In order to observe the ... -
Local Rotations in Borehole Breakouts—Observed and Modeled Stress Field Rotations and Their Implications for the Petroleum Industry
(American Society of Civil Engineers, 2006)Existing borehole breakout techniques are used to estimate the orientation of maximum horizontal stress (SHmax) with depth at a single borehole location. This method often results in regional (between boreholes) and local ... -
Principal Deviatoric Strain Increment Ratios for Sand Having Inherent Transverse Isotropy
(American Society of Civil Engineers, 2006)The behavior of sand on the -
Development of Tensile Hoop Stress during Horizontal Directional Drilling through Sand
(American Society of Civil Engineers, 2006)Although horizontal directional drilling has become commonplace, there are problems associated with high drilling mud pressures causing hydraulic fracture leakage of mud out into the environment. Initiation of tensile ... -
Combined Finite- and Boundary-Element Analysis of the Effects of Tunneling on Single Piles
(American Society of Civil Engineers, 2006)An efficient and practical method of analysis to predict the effects of tunneling on existing single pile foundations is described. The method involves a combination of the finite- and boundary-element (FAB) methods, with ... -
Earth Dam with Toe Drain on an Impervious Base
(American Society of Civil Engineers, 2006)The required height of a toe drain for a homogeneous earth dam on an impervious base has been determined considering reservoir water level, capillary rise for the embankment soil, free board, top width of the earth dam, ... -
Load Transfer in Rammed Aggregate Piers
(American Society of Civil Engineers, 2006)Predicting the load–settlement and load–transfer behaviors of rammed aggregate piers are important aspects of design. Use of advanced engineering models, however, can be complex involving uncertainty in selection of nonlinear ... -
Three-Dimensional Linear and Simplified Nonlinear Soil Response Methods Based on an Input Wave Field
(American Society of Civil Engineers, 2006)We propose three-dimensional linear and simplified nonlinear soil response methods based on an input seismic wave field. An input wave field is employed to treat seismic surface waves excited by a deep structure in a shallow ... -
Analysis of Deep Moisture Barriers in Expansive Soils. I: Constitutive Model Formulation
(American Society of Civil Engineers, 2006)Expansive soils cause important economical losses in many arid or semiarid countries in the world. Considering the large economic impact, relatively few efforts have been devoted to develop analytical methods that may help ... -
General Formulation of Two Kinematic Hardening Constitutive Models with a Smooth Elastoplastic Transition
(American Society of Civil Engineers, 2006)Two new constitutive models formulated within the framework of kinematic hardening plasticity are presented and their implementation into a finite-element program is described. The models are extensions of two existing ... -
Modeling of Settlement in Saturated and Unsaturated Municipal Landfills
(American Society of Civil Engineers, 2006)Municipal solid waste (MSW) landfills are not only used to dispose the refuse in most economical way but also utilized as a viable land in today’s waste management strategy. Settlement prediction is an important issue in ... -
Analysis of Deep Moisture Barriers in Expansive Soils. II: Water Flow Formulation and Implementation
(American Society of Civil Engineers, 2006)Several alternatives have been proposed to prevent damage to civil infrastructure founded on expansive soils. For example, deep moisture barriers have been used in highways and buildings. However, in some cases, the protected ... -
Elastoplastic Model for the Long-Term Behavior Modeling of Unbound Granular Materials in Flexible Pavements
(American Society of Civil Engineers, 2006)The constitutive modeling of cyclic plasticity of soils has made great progress, especially in the area of sands liquefaction modeling. Nowadays, the problem of rutting of flexible pavements linked to permanent deformations ... -
Finite-Element Parametric Study of the Consolidation Behavior of a Trial Embankment on Soft Clay
(American Society of Civil Engineers, 2006)The paper presents a case study for numerical analysis of the consolidation behavior of an instrumented trial embankment constructed on a soft soil foundation. Details are given to the geological profile, field instrumentation, ... -
New Approach to Determine Three-Dimensional Contacts in Blocks System: Penetration Edges Method
(American Society of Civil Engineers, 2006)Detection of contacts between three-dimensional (3D) blocks is a key problem in three-dimensional distinct element analysis. In this paper, the limitations of the -
Constitutive Model for Rockfill Materials and Determination of Material Constants
(American Society of Civil Engineers, 2006)Two types of rockfill materials collected from seven sites are modeled and tested under triaxial loading. A constitutive model based on a disturbed state concept is used to characterize the behavior of modeled rockfill ... -
Design of a Rigid Cutoff Wall
(American Society of Civil Engineers, 2006)A sheet pile cutoff wall simply called cutoff wall is used in almost all types of water retaining structures to reduce the exit gradient at the downstream toe and prevent the chances of sand boiling and piping. In 1954, ... -
Influence of Micromaterial Heterogeneity on Strain Localization in Granular Materials
(American Society of Civil Engineers, 2006)Lade’s constitutive model was modified to incorporate the couple stress and the particle’s rotation within the framework of the Cosserat continuum. The finite element equations were implemented in the finite-element program ...