International Journal of Geomechanics: Recent submissions
Now showing items 2401-2420 of 4049
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Sustainable Improvement of Clays Using Low-Carbon Nontraditional Additive
(American Society of Civil Engineers, 2018)Nontraditional low-carbon additives are widely used in the sustainable treatment of problematic soils for construction and pavement materials. This study investigated the mechanical and microstructural properties of white ... -
Progressive Internal Erosion in a Gap-Graded Internally Unstable Soil: Mechanical and Geometrical Effects
(American Society of Civil Engineers, 2018)This paper investigates the posterosion geomechanical behavior of internally unstable granular material due to removal of fines caused by erosive forces of water flow. Posterosion undrained behavior of a gap-graded internally ... -
Random Seismic Response and Dynamic Fuzzy Reliability Analysis of Bedding Rock Slopes Based on Pseudoexcitation Method
(American Society of Civil Engineers, 2018)Seismic ground motion is a dynamic random process, and it has obvious random uncertainty. The traditional reliability analysis of bedding rock slopes under earthquake excitation is usually based on pseudostatic method and ... -
Smoothed Particle Finite-Element Method for Large-Deformation Problems in Geomechanics
(American Society of Civil Engineers, 2018)This study presents a novel smoothed particle FEM (SPFEM) for large-deformation problems in geomechanics. Within the framework of the particle FEM (PFEM), a strain smoothing technique for nodal integration is incorporated. ... -
New Gradation Equation and Applicability for Particle-Size Distributions of Various Soils
(American Society of Civil Engineers, 2018)A new gradation equation that can describe the particle-size distribution curves of soils with continuous gradation is presented. The results obtained for a large amount of test data from soil gradations prove that the ... -
Seismic Vulnerability Analysis of Rock Mountain Tunnel
(American Society of Civil Engineers, 2018)Seismic fragility analysis is a way to study the vulnerability of structures considering various uncertainties. In the paper, a seismic vulnerability analysis of rock mountain tunnels is proposed. The uniform design method ... -
Theoretical Analysis of Pressure-Dependent K0 for Normally Consolidated Clays Using Critical State Soil Models
(American Society of Civil Engineers, 2018)The coefficient of earth pressure at rest (K) for normally consolidated clays increases nonlinearly with increasing consolidation pressure toward a steady value under high pressure rather than remaining constant. Analytical ... -
Method for Considering the Effect of Nonuniform Consolidation
(American Society of Civil Engineers, 2018)The effect of nonuniform consolidation on the average degree of consolidation (DOC) under the one-dimensional (1D) condition is investigated through a laboratory model test and finite-element analyses (FEAs). Nonuniform ... -
Role of Initial Particle Arrangement in Ballast Mechanical Behavior
(American Society of Civil Engineers, 2018)Ballast containing large aggregate particles with uniform gradation is an essential layer in a railway substructure to facilitate load distribution and drainage. Although it is constructed or maintained in accordance with ... -
Evolution of Particle Breakage for Calcareous Sands during Ring Shear Tests
(American Society of Civil Engineers, 2018)Ring shear tests were performed in this work to investigate the characteristics of shear band formation and particle breakage for calcareous sands sampled from the South China Sea. The tests focused on the formation of ... -
Improved Nonlinear Strength Criterion for Jointed Rock Masses Subject to Complex Stress States
(American Society of Civil Engineers, 2018)Prediction of rock mass strength is important for estimating stability in rock engineering projects. In this paper, a novel strength criterion was proposed to determine the strength of a jointed rock mass subjected to a ... -
Failure Modes and Mechanisms of Shallow Debris Landslides Using an Artificial Rainfall Model Experiment on Qin-ba Mountain
(American Society of Civil Engineers, 2018)Landslides triggered by rainfall are a major multiple geological hazard on Qin-ba Mountain. Debris landslides in the shallow layer make up a large proportion of all landslides. A flume experiment was conducted to successfully ... -
Semianalytical Solution to Determine Minimum Safety Thickness of Rock Resisting Water Inrush from Filling-Type Karst Caves
(American Society of Civil Engineers, 2018)A semianalytical solution to determine the minimum safety thickness of the rock resisting water inrush from filling-type karst caves was investigated. Mechanical analyses of the filling materials in karst caves located in ... -
Elastoplastic Model for Transversely Isotropic Rocks
(American Society of Civil Engineers, 2018)The structure of the layered rocks is characterized by oriented bedding planes, resulting in transverse isotropy in deformation and strength. An elastoplastic constitutive model was proposed for transversely isotropic (TI) ... -
Prediction of Bearing Capacity of Geogrid-Reinforced Stone Columns Using Support Vector Regression
(American Society of Civil Engineers, 2018)The prediction of the bearing capacity (qrs) of unreinforced sand bed and geogrid-reinforced sand bed resting over a group of stone columns floating in soft clay is an important task due to the complex geometry and uncertainty ... -
Representative Elementary Volume Determination for Permeability and Porosity Using Numerical Three-Dimensional Experiments in Microtomography Data
(American Society of Civil Engineers, 2018)Combining tomographical reconstructed volumes and direct pore-scale flow simulations has proven to be an efficient tool in modern soil sciences. The main objective of the present paper is to present an extensive study about ... -
Experimental and Numerical Investigations on the Mechanical Behavior of Fine-Grained Sandstone
(American Society of Civil Engineers, 2018)The study investigated the mechanical behavior of fine-grained sandstone. Laboratory triaxial cyclic loading tests were conducted on the sandstone under various confining pressures (5, 15, and 2 MPa). The initial yield ... -
Freezing Strain Model for Estimating the Unfrozen Water Content of Saturated Rock under Low Temperature
(American Society of Civil Engineers, 2018)The freeze-thaw damage of rock is mainly induced by the 9% volumetric expansion of frozen water. It has already been demonstrated that unfrozen water exists in porous material at the freezing point. Accurate estimation of ... -
Untitled
(American Society of Civil Engineers, 2018)A rock burst can cause a serious disaster. For the mitigation of rock burst-induced disaster, the possibility assessment of a rock burst for an underground excavation is a key undertaking and also a great challenge because ... -
Influence of Grain Gradation on Permanent Strain of Unbound Granular Materials under Low Confining Pressure and High-Cycle Loading
(American Society of Civil Engineers, 2018)Unbound granular materials (UGMs) are widely used as road-base and subbase materials for bearing traffic loading. Significant road settlements can be caused by cyclic traffic loading after several years of operation. To ...