International Journal of Geomechanics: Recent submissions
Now showing items 3581-3600 of 4049
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New Developments of the Boundary Element Method for Underground Constructions
(American Society of Civil Engineers, 2012)In this paper, an innovative modeling approach is presented for the simulation of underground construction with the emphasis on tunneling. The boundary element method (BEM) is used, and the theoretical background is discussed ... -
Numerical Simulation of Interactions between the Shield-Supported Tunnel Construction Process and the Response of Soft Water-Saturated Soils
(American Society of Civil Engineers, 2012)During the design and construction of shield-driven tunnels, a reliable analysis of the construction process is required for the prognosis of the process-induced surface settlements, changes in soil stresses, and changes ... -
Analytical Solution for the Consolidation of a Composite Foundation Reinforced by an Impervious Column with an Arbitrary Stress Increment
(American Society of Civil Engineers, 2013)On the basis of the axisymmetric consolidation model, the governing equation and the corresponding solution were developed for the consolidation of a composite foundation with an impervious column by incorporating an ... -
Mode of Failure of a Group of Stone Columns in Soft Soil
(American Society of Civil Engineers, 2013)The design of stone columns is currently based on theories developed for a single column, ignoring the group interaction and therefore the group efficiency. Whereas single stone columns mainly fail by bulging, a group of ... -
Application of the Modified Goodman Model in Soil Nailing
(American Society of Civil Engineers, 2013)Soil nailing is an in situ soil reinforcement technique used for enhancing the stability of slopes, retaining walls, and excavations. Nails work predominantly in tension, but may also work in bending and/or shear under ... -
Use of the Relevance Vector Machine for Prediction of an Overconsolidation Ratio
(American Society of Civil Engineers, 2013)This article uses the relevance vector machine (RVM) for the prediction of the overconsolidation ratio (OCR) of fine-grained soils based on piezocone penetration test data. RVM provides an empirical Bayes method of function ... -
Time-Dependent Modeling of Tunnels in Squeezing Conditions
(American Society of Civil Engineers, 2012)The numerical analysis of tunnels in rock masses, which exhibit a squeezing behavior, is considered, with reference to the use of two elastoviscoplastic constitutive laws implemented in finite-difference and finite-element ... -
Alternative Solution for Advective-Dispersive Flow of Reagent Solutes in Clay Liners
(American Society of Civil Engineers, 2013)An analytical solution for the advection-dispersion equation, including sorption effects, was first proposed by Akio Ogata and Robert Banks in 1961. This solution allows the computation of the percentage of dissipation of ... -
Discussion of “Practical Subgrade Model for Improved Soil-Structure Interaction Analysis: Model Development” by John S. Horvath and Regis J. Colasanti
(American Society of Civil Engineers, 2013) -
Modeling Unsaturated Soil Response under Suction-Controlled True Triaxial Stress Paths
(American Society of Civil Engineers, 2012)Results from a comprehensive series of suction-controlled hydrostatic compression, conventional triaxial compression, triaxial compression, triaxial extension, and simple shear tests, conducted on statically compacted ... -
Cylindrical Cavity Expansion in Elastoplastic Medium with a Variable Potential Flow
(American Society of Civil Engineers, 2013)An analytical model dealing with the problem of an expanded cylindrical cavity in an elastoplastic medium is presented. The constitutive material is assumed to be weightless, homogeneous, and isotropic; its resistance is ... -
Enhanced CS2 Model for Large Strain Consolidation
(American Society of Civil Engineers, 2012)Since original publication in 1997, the CS2 numerical model has been widely used for consolidation analysis and has formed the basis for several more advanced consolidation models. In this paper, an enhanced version of the ... -
Effect of the Smear Zone around SCP Improved Composite Samples Tested in the Laboratory
(American Society of Civil Engineers, 2013)In the design practice for sand compaction piles (SCPs), it is usually assumed that the state of in situ soil does not change during installation. In fact, there is evidence to suggest that extensive remolding of the ... -
Effect of Geocell Type on Load-Carrying Mechanisms of Geocell-Reinforced Sand Foundations
(American Society of Civil Engineers, 2012)In this study, a series of model tests has been carried out to develop an understanding of the influence of the geocell material on the load-carrying mechanism of the geocell-reinforced sand foundations under strip loading. ... -
Discrete Element Method Study on Effect of Shear-Induced Anisotropy on Thermal Conductivity of Granular Soils
(American Society of Civil Engineers, 2013)In this study, a simple idealization of heat transfer by conduction at the interparticle contacts is utilized for the evaluation of thermal conductivity of granular soils when subjected to external loading conditions. ... -
Three-Dimensional Method of Fragments to Study Drainage through Hydraulic Fill Stopes
(American Society of Civil Engineers, 2012)The method of fragments is a simple technique for determining the flow rate, pore water pressure, and exit gradient in two-dimensional confined flow problems. This method is extended to a three-dimensional hydraulic fill ... -
Characteristics of Negative Skin Friction for Superlong Piles under Surcharge Loading
(American Society of Civil Engineers, 2012)This paper presents the study of negative skin friction of the superlong pile caused by the soil settlement under large-scale surcharge loading. Based on the displacement equilibrium principle and transfer matrix method, ... -
Upper Bound Solution for Pullout Capacity of Vertical Anchors in Sand Using Finite Elements and Limit Analysis
(American Society of Civil Engineers, 2012)The horizontal pullout capacity of vertical anchors embedded in sand has been determined by using an upper bound theorem of the limit analysis in combination with finite elements. The numerical results are presented in ... -
Simplified Analytical Method for Calculating the Maximum Shear Stress of Nail-Soil Interface
(American Society of Civil Engineers, 2012)This paper describes a simplified analytical method that considers postinstallation normal stress, normal stress due to soil dilation, and grouting pressure when calculating the maximum shear stress of the nail-soil ... -
Numerical Analysis Characterizing the Influence of the Evolution of the Length Scale on Strain Localization in Cosserat Media
(American Society of Civil Engineers, 2012)In this paper, on the basis of the micropolar (Cosserat) continua approach, a constitutive model for simulation of granular material (e.g., sand) response in the elastoplastic range has been presented. Numerical analyses ...