International Journal of Geomechanics: Recent submissions
Now showing items 3561-3580 of 4049
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Linearization of Drucker-Prager Yield Criterion for Axisymmetric Problems: Implementation in Lower-Bound Limit Analysis
(American Society of Civil Engineers, 2013)The linearization of the Drucker-Prager yield criterion associated with an axisymmetric problem has been achieved by simulating a sphere with the truncated icosahedron with 32 faces and 60 vertices. On this basis, a numerical ... -
Effects of Grain Scale Heterogeneity on Rock Strength and the Chipping Process
(American Society of Civil Engineers, 2012)Heterogeneity is an important factor controlling fracture initiation, accumulation, and propagation within polycrystalline rock. Internal spatial variability in terms of mineralogy, grain size, and anisotropy affect the ... -
Nonlinear Finite-Element Modeling Analysis of Soil-Pipe Interaction
(American Society of Civil Engineers, 2013)The effect of dynamic compaction forces is ignored in the analysis and design of underground structures. Several failure cases have been reported in which longitudinal cracks are observed during installation and compaction ... -
Inexact Block Diagonal Preconditioners to Mitigate the Effects of Relative Differences in Material Stiffnesses
(American Society of Civil Engineers, 2013)Finite-element analysis of many soil-structure interaction problems involves material zones of widely differing stiffnesses. The large relative differences in material stiffnesses usually result in an ill-conditioned system ... -
Application of Periodic Theory to Rows of Piles for Horizontal Vibration Attenuation
(American Society of Civil Engineers, 2013)One of the most important phenomena in periodic structures is the existence of the band of frequency gaps (BFGs). Elastic waves with frequencies in BFGs cannot propagate in the medium. Therefore, the BFGs can be used to ... -
Viscoelastic Poisson’s Ratio of Asphalt Mixtures
(American Society of Civil Engineers, 2013)The Poisson’s ratio (PR) of asphalt mixtures is a fundamental material property that is an important input parameter to viscoelastic pavement models. It is typically assumed that PR of asphalt is time independent or, in ... -
Numerical Modeling of Desiccation Cracking Using the Cohesive Crack Method
(American Society of Civil Engineers, 2013)With the advent of climate change, it is thought that desiccation cracking of soil will lead to increases in damage to buried infrastructure. Desiccation cracking is a complex phenomenon that historically has been very ... -
Influence of Deep Excavations on Nearby Existing Tunnels
(American Society of Civil Engineers, 2013)In Shanghai, a number of new underground passages are being constructed, often requiring deep excavations. When the excavations are in the vicinity of existing tunnels, it is necessary to assess the influence of these ... -
Constitutive Modeling of Loose Sands under Various Stress Paths
(American Society of Civil Engineers, 2013)Developing reliable and versatile constitutive models for geomaterials has been a challenging task for nonlinear finite-element analysis of geotechnical engineering systems. This paper is mainly concerned with the elastoplastic ... -
Study of Strain Wedge Parameters for Laterally Loaded Piles
(American Society of Civil Engineers, 2013)A set of small-scale physical modeling of a single pile under lateral loads was performed in a loose sand environment. Digital images were captured during the lateral loading of the pile from the side and from the top of ... -
New Geometric Average Method for Calculation of Ultimate Bearing Capacity of Shallow Foundations on Stratified Sands
(American Society of Civil Engineers, 2013)Obtaining the bearing capacity of shallow foundations in a nonhomogeneous soil profile has been a challenging task in geotechnical engineering. In this paper, a new geometric average for the equivalent soil friction angle ( -
Numerical Analysis of an Interaction between Hydraulic-Powered Support and Surrounding Rock Strata
(American Society of Civil Engineers, 2013)Longwall mining is the only technically proven and well-established mining method used worldwide for extracting coal from deep mines. In this paper, two-dimensional (2D) continuum finite-element models of longwall panels ... -
Pore-Water Pressure Development Caused by Wave-Induced Cyclic Loading in Deep Porous Formation
(American Society of Civil Engineers, 2013)The overall development of pore-water pressure in a deep, homogenous, and isotropic porous formation caused by wave-induced cyclic loading has been analyzed. A simplified equation for the estimation of the maximum possible ... -
Analysis of Axially Loaded Short Rigid Composite Caisson Foundation Based on Continuum Approach
(American Society of Civil Engineers, 2013)The concept of an open pipe pile with a gravel plug is used to develop a new short rigid composite caisson foundation for floodplains and lowlands. It consists of a shallow pipe or caisson, sunk to the desired depth by ... -
Analysis and Design Approach for Large Storage Caverns
(American Society of Civil Engineers, 2013)This paper presents a case study of an underground crude oil storage project. This storage site is researched with detailed field and laboratory investigations. The layout, cross section, and elevation of the caverns are ... -
Load Coefficient for Ditch Conduits Covered with Geosynthetic-Reinforced Granular Backfill
(American Society of Civil Engineers, 2013)Conduits buried in narrow trenches and covered with granular soil backfills are commonly used for several services. Because of soil arching action, a significant fraction of self-weight of the backfill is transferred to ... -
Mechanistic-Empirical Modeling of Geosynthetic-Reinforced Unpaved Roads
(American Society of Civil Engineers, 2012)Mechanistic-empirical modeling and design solutions have been routinely used for conventional flexible pavements and have recently entered mainstream design practice through the issue of AASHTO design software. Recent work ... -
Calibration of the Triaxial Hyperbolic Mohr-Coulomb Elastoplastic Model Parameters on Laboratory Rock Mechanics Tests
(American Society of Civil Engineers, 2012)Herein, a methodology is presented for the calibration of the triaxial hyperbolic Mohr-Coulomb (HMC) elastoplastic model on a set of experimental data of conventional rock mechanics tests on intact rocks. It is demonstrated ... -
Discussion of “Critical Review of the Methodologies Employed for Soil Suction Measurement” by S. Sreedeep and Devendra N. Singh
(American Society of Civil Engineers, 2013) -
Time Factor in Consolidation: Critical Review
(American Society of Civil Engineers, 2013)The magnitude of consolidation settlement is often calculated using Terzaghi’s expression for average degree of consolidation (