International Journal of Geomechanics: Recent submissions
Now showing items 2481-2500 of 4049
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Approximate Analytical Solutions for One-Dimensional Consolidation of a Clay Layer with Variable Compressibility and Permeability under a Ramp Loading
(American Society of Civil Engineers, 2018)There are no analytical solutions concerning the consolidation of a clay layer subjected to a ramp load with consideration of the variation of the consolidation coefficient and the nonlinearity of compressibility and ... -
Creep Coefficient of Binary Sand–Bentonite Mixtures in Oedometer Testing Using Mixture Theory
(American Society of Civil Engineers, 2018)A series of oedometer tests was performed on binary sand–bentonite mixtures considering both the effect of the sand mass fraction and the initial water content of the bentonite matrix. The experimental data reveal that the ... -
Bearing Capacity of a Group of Stone Columns in Soft Soil Subjected to Local or Punching Shear Failures
(American Society of Civil Engineers, 2018)The use of stone columns is a viable, cost-effective, and environmentally friendly ground improvement technique. Columns are made of compacted aggregate and installed in soft soil as reinforcements to increase the bearing ... -
Estimating p-y Curves for Clays by CPTU Method: Framework and Empirical Study
(American Society of Civil Engineers, 2018)Despite its wide use as a tool in foundation design, the piezocone penetration test (CPTU) has been rarely recommended to work for design and analysis of laterally loaded piles. Obtaining lateral response of pile foundations ... -
Assessment of Conventional Interpretation Methods of RC Results Based on 3D Numerical Simulations
(American Society of Civil Engineers, 2018)Resonant column (RC) testing is a widely used laboratory technique to determine the stiffness characteristics of soils under small- to medium-strain perturbations. Solid or hollow cylindrical soil specimens are set into ... -
Discrete Kinematic Mechanism for Nonhomogeneous Slopes and Its Application
(American Society of Civil Engineers, 2018)In the framework of limit analysis, most previous studies of nonhomogeneous slopes have only involved the spatial variation of cohesion, whereas cases involving the spatially varying friction angle have rarely been studied. ... -
Spectral Element Method for Dynamic Response of Multilayered Half Medium Subjected to Harmonic Moving Load
(American Society of Civil Engineers, 2018)In this paper, the spectral element method (SEM) is presented to analyze the dynamic response of a multilayered half medium subjected to a harmonic moving load. In SEM, the spectral stiffness matrix of one-node and two-node ... -
Experimental Evaluation of the Shear Behavior of Fiber-Reinforced Calcareous Sands
(American Society of Civil Engineers, 2018)Fiber-reinforced calcareous sands manifest unique properties of increased shear strength and particle breakage. These features are of practical importance for some offshore engineering constructions because the strength ... -
Numerical Simulation of a Single Stone Column in Soft Clay Using the Discrete-Element Method
(American Society of Civil Engineers, 2018)The coupled discrete-element method–finite difference method (DEM–FDM) numerical modeling scheme was proposed to simulate a single stone column in soft clay according to the Universal Distinct Element Code (UDEC). The ... -
Elastoplastic Analysis of a Jointed Rock Mass Using a Novel Semianalytical Meshless Method
(American Society of Civil Engineers, 2018)In this paper, a novel semianalytical meshless method as an efficient and accurate method is introduced for elastoplastic analysis of jointed rock mass. Because the proposed method combines the advantages of scaled boundary ... -
Behavior and Modeling of Fiber-Reinforced Clay under Triaxial Compression by Combining the Superposition Method with the Energy-Based Homogenization Technique
(American Society of Civil Engineers, 2018)Modeling approaches to fully capture the behavior of fiber-reinforced clay remain lacking, although the beneficial role of discrete short fibers in reinforcing soils is an established concept. This lack results from ... -
Probabilistic Stability Analysis of Subway Tunnels Combining Multiple Failure Mechanisms and Response Surface Method
(American Society of Civil Engineers, 2018)A probabilistic approach is proposed for face stability analysis of subway tunnels, which begins with establishment of multiple failure mechanisms, including active failure and passive failure. In terms of the complex ... -
Influence of Raised Groundwater Level on the Stability of Unsaturated Soil Slopes
(American Society of Civil Engineers, 2018)The response of unsaturated soil slopes subjected to raised groundwater levels is generally governed by undrained shear strength. A series of unconsolidated undrained triaxial tests was conducted on reconstructed specimens ... -
3D Numerical Modeling of Foundation Solutions for Wind Turbines
(American Society of Civil Engineers, 2018)With the current tendency to gradually increase the contribution of renewable energy to achieve significant proportions of the entire production, the wind farm construction rate is actually high. Because the location of ... -
Effect of an Imperfect Interface on Seismic Response of a Composite Lining Tunnel Subjected to SH-Waves
(American Society of Civil Engineers, 2018)The nonlinear behaviors of rock–lining and the lining–lining interfaces significantly influence the seismic response of tunnels with composite linings. Therefore, a closed-form analytical solution was developed for the ... -
Impact of Static Preshearing on Undrained Anisotropy and Shear Characteristics of Sand
(American Society of Civil Engineers, 2018)The preshearing history of soil is a prominent factor governing its mechanical behavior at various loading conditions. An experimental program was developed to study the effects of preshearing at drained compression and ... -
Density Effect and Associated Unjamming Events on the Aging-Induced Stiffness Increase in Sand
(American Society of Civil Engineers, 2018)This paper reports the density effect on the aging-induced increase in soil stiffness based on discrete-element method (DEM) simulations conducted on dense, medium-dense, and loose samples for the study. Like experimental ... -
Mechanism and Countermeasure of Segmental Lining Damage Induced by Large Water Inflow from Excavation Face in Shield Tunneling
(American Society of Civil Engineers, 2018)This study investigated the influence of large water inflow from the excavation face on segmental lining damage when the earth-pressure balance (EPB) method was used in shield tunneling in a saturated silty sand layer. A ... -
Finite-Element Modeling of Borehole Breakouts for In Situ Stress Determination
(American Society of Civil Engineers, 2018)Borehole breakouts appear in drilling and production operations when rock subjected to in situ stress experience shear failure. By finite-element modeling of borehole breakouts, the authors obtained the stress state close ...