International Journal of Geomechanics: Recent submissions
Now showing items 2901-2920 of 4049
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Excavation-Damaged Zone around Tunnel Surface under Different Release Ratios of Displacement
(American Society of Civil Engineers, 2017)A tunnel excavation-damaged zone (EDZ) will gradually form with increasing release ratios of displacement (RRD) in the rock mass surrounding a tunnel. This paper presents a study of the longest subway tunnel in China, ... -
Three-Dimensional DDA and DLSM Coupled Approach for Rock Cutting and Rock Penetration
(American Society of Civil Engineers, 2017)Rock cutting and rock penetration are typical problems in civil, mining, petroleum, and geothermal engineering disciplines. They involve dynamic fracturing and fragmentation of rock, high-speed movements of a cutter/impactor, ... -
How Small Strain Stiffness and Yield Surface Affect Undrained Excavation Predictions
(American Society of Civil Engineers, 2017)This paper discusses how small-strain stiffness and some aspects of the yield surface affect the finite-element predictions of excavation responses, including wall and ground deformations. By using the in-house-developed ... -
Interaction Effect of Two Closely Spaced Skirted Strip Foundations in Cohesionless Soil Using Upper-Bound Limit Analysis
(American Society of Civil Engineers, 2017) -
Characterization of Joint Set Effect on Rock Pillars Using Synthetic Rock Mass Numerical Method
(American Society of Civil Engineers, 2017)In this paper, a synthetic rock mass (SRM) method is used to numerically characterize the effect of joint sets on rock pillars. The SRM model is constructed by explicitly inserting discrete fracture network into a particle ... -
Characterization of In Situ Stress State and Joint Properties from Extended Leak-Off Tests in Fractured Reservoirs
(American Society of Civil Engineers, 2017)Characterization of geomechanical parameters in naturally fractured reservoirs remains one of the most challenging tasks in civil, mining, and petroleum engineering. Extended leak-off tests (XLOTs) are generally carried ... -
Three-Dimensional Spherical DDA Method for Modeling Friction Problems
(American Society of Civil Engineers, 2017)Three-dimensional (3D) discontinuous deformation analysis (DDA) is very suitable for simulating large-displacement behavior of rock masses. One fundamental issue commonly encountered in 3D DDA is 3D friction problems. In ... -
Constitutive Modeling of Coarse-Grained Materials Incorporating the Effect of Particle Breakage on Critical State Behavior in a Framework of Generalized Plasticity
(American Society of Civil Engineers, 2017)Coarse-grained materials (CGMs), including gravel, ballast, and rockfill material, exhibit a complicated stress-strain-volume change behavior, which is state dependent and influenced by considerable particle breakage even ... -
Model Study on the Performance of Single-Finned Pile in Sand under Tension Loads
(American Society of Civil Engineers, 2017)A variety of structures similar to marine dolphins, dock-fendering systems, tower foundations, inundated platforms, and abutments are installed on deep foundations, which are subjected to uplift loads. This paper introduces ... -
Long-Term Stability Analysis for High Arch Dam Based on Time-Dependent Deformation Reinforcement Theory
(American Society of Civil Engineers, 2017)A high arch dam project causes an intense disturbance to its geological environment, with high in situ stress in the critical instability state, and the creep and damage of abutment rock mass resulting from the process of ... -
DEM Modeling Mechanical Behavior of Unsaturated Structural Loess under Constant Stress Increment Ratio Compression Tests
(American Society of Civil Engineers, 2017)This paper presents a numerical investigation into the macromechanical and micromechanical behavior of unsaturated structural loess under constant stress increment ratio compression using the distinct-element method (DEM). ... -
Estimation of Soil Expansion Force in Static Pipe Bursting: Comparison between Numerical and Analytical Solutions
(American Society of Civil Engineers, 2017)Pull-force estimation is important for the design of static pipe-bursting projects. Among the three components of the pull force, soil expansion force has a significant impact. In this study, a numerical model was employed ... -
Morphological and Nanomechanical Characterization of Industrial and Agricultural Waste–Modified Asphalt Binders
(American Society of Civil Engineers, 2017)For the past several decades, researchers around the world have used nanoindentation techniques to characterize different materials for biological, medical, and polymer science applications. In recent years, nanoindentation ... -
Love-Type Surface Wave in an Isotropic Layer Bounded between Orthotropic and Heterogeneous Half-Spaces under Initial Stresses
(American Society of Civil Engineers, 2017)A mathematical model of propagation of the Love wave in an intermediate isotropic vertical layer placed in between two prestressed half-spaces with different elastic properties is proposed. The upper half-space is orthotropic ... -
Influence of Gluing-Solution Layout on Gluing-Solution Distribution in a Realistic Railway Ballast
(American Society of Civil Engineers, 2017)In this article, the influence of gluing-solution layout on the gluing-solution distribution at the final stage of solidification process in a realistic railway ballast is investigated. A unified Cauchy stress model, with ... -
Model Development and Experimental Verification for Permeability Coefficient of Soil–Rock Mixture
(American Society of Civil Engineers, 2017)A soil–rock mixture consists of soil and broken rocks mixed proportionally, and it has more complicated seepage characteristics than pure soil or broken rocks. Current research on the seepage characteristics of soil–rock ... -
Quantification of the Settlement of an Embankment Constructed on Peat due to the Expulsion of Gases
(American Society of Civil Engineers, 2017)The mechanisms that result in the settlement of structures constructed on peat foundations have been the subject of numerous investigations. A recent study of the behavior of the peat subgrade showed that gas bubbles within ... -
Effect of Jet-Grout Columns on the Seismic Response of Layered Soil Deposits
(American Society of Civil Engineers, 2017)Ground-improvement techniques, such as jet-grout columns, may have positive effects on structures founded on soft soil when subjected to earthquake loading. The main objectives of this paper are first to evaluate the effects ... -
Numerical Simulation of Failure Process of Rock-Like Materials Subjected to Impact Loads
(American Society of Civil Engineers, 2017)In this research, a novel meshless numerical method, termed general particle dynamics (GPD), to simulate crack initiation, propagation, and coalescence in rock-like materials subjected to impact loads was developed. In the ... -
Modeling Pile Setup in Natural Clay Deposit Considering Soil Anisotropy, Structure, and Creep Effects: Case Study
(American Society of Civil Engineers, 2017)This paper reports the results of a numerical investigation of the behavior of a natural soft clay deposit under the installation of a case study pile. The case study problem included installation of an instrumented ...