In‐situ stress condition is an important aspect of buried unpressurized pipelines. Empirical approaches used for preliminary design are usually based on observations, which may be associated with some errors related to the measurement method. The photoelastic approach represents an alternative, nonintrusive measurement technique to model the plane stress‐strain behavior of buried pipes under different

To better understand the strain‐softening effect and its implications for coal construction and extraction, this paper utilizes a numerical simulation method to investigate the deformation stability of gas extraction holes with consideration for strain softening. The study further analyzes the strain‐softening effect on effective stress, gas pressure, and plastic failure mode by comparing models with

In seismic tunnel lining design, most existing studies have focused on circular and box‐type tunnels, while the response of subrectangular tunnel linings under seismic loading, especially in imperfect soil‐lining conditions, remains underexplored. The present paper aims to address this gap by investigating the behavior of subrectangular tunnel lining subjected to seismic loadings in full‐slip condition

Temperature effects become important in a number of geotechnical applications, such as nuclear waste disposal facilities, buried high‐voltage cables, pavement, energy geostructures and geothermal energy. On the other hand, soft soils act time‐ and strain rate dependent. Both temperature and strain rate influence soil behavior, affecting stiffness, strength, and deformation even under constant stress

This paper presents a semi‐analytical method for the stress and displacement of a shallow buried lined tunnel based on the complex variable method under the full‐slip contact condition, that is, along the interface between the surrounding rock/soil mass and lining, the radial stresses and radial displacements are continuous, and the shear stresses are equal to zero. In the presented solution, the interaction

In the construction process of the artificial ground freezing (AGF), the utilization of the temperature field to determine the freezing time is crucial for the safe construction. While the thermal parameter is the core parameter of the temperature field calculation. How to obtain the joint probability distribution of thermal parameters of frozen soil under limited test data is essential to improve

The utilization of cemented tailings backfill (CTB) presents distinct advantages in managing tailings and underground mining voids, occasionally incorporating coarse aggregate. In this study, the particle swarm optimization (PSO) algorithm was employed to optimize the extreme gradient boosting (XGBoost) model for predicting the unconfined compressive strength (UCS) of CTB containing coarse aggregate

Concrete piers located in steep mountainous regions are highly susceptible to damage from debris flows. Existing studies often oversimplify debris flows as particle flows or equivalent fluids, neglecting their multiphase characteristics. In this paper, a three‐dimensional numerical model of debris flow‐bridge piers interaction is established based on the coupled CFD‐DEM approach. The Hertz–Mindlin

Annual precipitation and its intensity have increased worldwide since the start of the 20th century and represent two weather and climate change indicators related to rainfall‐induced landslides. Although these landslides can occur in a very short time, the hydro‐mechanical conditions that precede them can take several hours or days to develop. In this context, understanding the mechanisms of rainfall‐induced

With increasing mining depth, the mining methods for steeply inclined medium‐thick ore bodies have become unsuitable. In this paper, by integrating the roof‐pillar induced caving technology, through technical fusion and reconstruction, a combined mining method of roof‐pillar induced caving and non‐pillar sublevel caving has been formulated. The five core parameters of the combined mining method (the

This paper is concerned with the study of a poroelastic soil layer under impulsive horizontal loading. Building upon Biot's general theory of poroelasticity, a comprehensive set of governing equations addressing three‐dimensional transient wave propagation problem are established. Explicit general solutions for displacements and pore‐pressures are derived by employing a sophisticated mathematical approach

This paper presents an efficient two‐and‐a‐half dimensional (2.5D) numerical approach for analysing the long‐term settlement of a tunnel‐soft soil system under cyclic train loading. Soil deformations from train loads are divided into shear deformation under undrained conditions and volumetric deformation from excess pore water pressure (EPWP) dissipation. A 2.5D numerical model was employed to provide

Further investigation into the progression of soil arching under the impact of noncentered tunnel is warranted. This study addresses this need by examining trapdoor models with varying vertical and horizontal spacings between the tunnel and the trapdoor through the discrete element method. The numerical model underwent calibration utilizing data from previous experiments. The results indicated that

Natural gas hydrates are the preferred alternative to traditional fossil fuels, estimated to store twice as much carbon. The gas hydrate‐bearing sediment (GHBS) is a representative degradable soil. During gas hydrate production, solid mass loss and pore liquid/gas generation occur, including both decomposition and consolidation processes of GHBS. These potentially trigger reservoir collapse, severely

In the field of geomechanics and geotechnical engineering, joint is crucial as a common structure or flaw in rock material. The shear deformation, strength, and failure behavior of rock are significantly influenced by the structural properties of joints, which include arrangement, persistency, dip angle, and length. The shear strength and deformation behavior, as well as the related micro‐cracking

Rigid pile composite foundation (RPCF) has been widely used in Yellow River Alluvial Plain (YRAP) due to remarkable reinforcement and economical effects. However, current design of RPCF in this area are typically based on saturated soil mechanic principles assuming drained condition, despite the fact that the soil is typically in unsaturated condition. Due to long time water scouring, the silt in YRAP

The framework of poromechanics is generalized to simulate the multiscale behavior of porous media subjected to internal loadings stemming from the growth of solid inclusions. This generalization is designed to enable the study of anisotropic internal stress generation from solid growth within the pores, while recovering isotropic fluid‐induced loading as a particular case. For this purpose, a mathematical

Failure criteria are crucial in numerical methods for effectively resolving material failures, especially in geomaterials such as rock and concrete. A wide array of criteria, designed for different rock types and complex stress conditions, has been developed. Although Artificial Neural Network (ANN)‐based failure criteria present a unified solution for incorporating these diverse criteria into numerical

The maintenance effort for a ballast bed is determined by the combination of tamping and stabilizing, which have always been separated in previous researches. In this study, a tamping‐stabilizing‐ballasted track was established, and a dynamic domain was innovatively developed to improve calculation efficiency. This model was verified through a comparison with field test results. Using this model, the

Microbially induced carbonate precipitation (MICP) has been extensively studied through experiments as a potential solution for ground improvement. However, the investigation and optimization of the MICP grouting process remain incomplete due to various experimental limitations, such as budget constraints, equipment availability, time limit, and suitable sites. As a result, the numerical method could

Mualem's approach has been widely used to predict hydraulic conductivity functions (HCFs) of bare soils if a soil water retention curve (SWRC) model is available. The assumption that Mualem's approach holds is that the distribution of soil pores is spatially completely random. Under this assumption, relative hydraulic conductivity (Kr) is determined by the continuance probability of water‐filled pores

This study assesses the capability of ChatGPT to generate finite element code for geotechnical engineering applications from a set of prompts. We tested three different initial boundary value problems using a hydro‐mechanically coupled formulation for unsaturated soils, including the dissipation of excess pore water pressure through fluid mass diffusion in one‐dimensional space, time‐dependent differential

Spalling and rockburst are severe criticalities that can emerge while excavating deep tunnels in rock masses under heavy natural stress states. Here, rock brittle failure can induce massive releases of the energy stored during the excavation and dangerous projections of rock blocks into the opening. The prediction of rock brittle failure is therefore crucial and, for this purpose, different empirical

Bimrocks, a complex rock mass commonly found in geotechnical engineering, are often analyzed through the discrete element method (DEM) to understand their mechanical behavior from both macro and micro perspectives. However, there is limited research addressing the post‐peak behavior of bimrocks, particularly in terms of the uniaxial compression stress–strain curve and failure characteristics, with

In this study, a modified reconstruction method for rock that considers the irregularity of minerals and microcracks was proposed. First, the quartet structure generation set (QSGS) method was modified by establishing two different growth modes of initial growth cores to generate the minerals and microcracks. Then, three‐dimensional (3D) digital rock modeling software was developed based on the modified

The excavation‐induced fractured zone (EFZ) and the anisotropic evolution in time of drifts’ convergence, as observed in the Mesue/Haute‐Marne Underground Researche Laboratory (MHM URL), reveal the complex behavior of Callovo‐Oxfordian (COx) claystone, the host formation for geological radioactive waste disposal project (Cigéo) in France. Especially, the dispersion of the in situ convergence monitoring

Granular flow is ubiquitous in various engineering scenarios, such as landslides, avalanches, and industrial processes. Reliable modeling of granular flow is crucial for mitigating potential hazards and optimizing process efficiency. However, the complex behavior of granular media, which transitions between solid‐like and fluid‐like states, poses a significant challenge in their modeling, particularly

Soil arching is one of the main mechanisms for load transfer in pile‐supported embankments, and the soil arching evolution patterns varied significantly depending on fill heights, pile spacings, pile stiffness, and soil stiffness. However, research on the effect of pile settlement on soil arching is relatively scarce, and most studies still use the traditional trapdoor test with a fixed arch foot to

A critical state plasticity model is proposed to describe the anisotropic sand behaviour under both proportional and non‐proportional loading conditions. An evolving fabric tensor is introduced into the model to reflect the influence of fabric anisotropy on the stress‐strain relation of sand. By employing a fabric‐dependent plastic flow direction, the non‐coaxial response can be simulated in a simple

Most of the robust artificial intelligence (AI)‐based constitutive models are developed with synthetic datasets generated from traditional constitutive models. Therefore, they fundamentally rely on the traditional constitutive models rather than laboratory test results. Also, their potential use within geotechnical engineering communities is limited due to the unavailability of datasets along with

The granular column collapse is a simple model to study natural disasters such as landslides, rock avalanches, and debris flows because of its potential to provide solid links of physical and mechanical properties to these catastrophic flows. Such flows are commonly composed of different grain‐size distributions, namely, polydispersity. Owing to the complexity of different particle‐size phases, explanations

In classical continuum constitutive models, the loss of ellipticity of the governing rate equilibrium equations entails localizing deformations and mesh sensitivity in finite element simulations. Extensions of such models, rooted in the micromorphic continuum, aim at remedying mesh sensitivity by introducing length scales into the constitutive formulation. The micropolar continuum constitutes a special

A theoretical model of the migration process of high‐alkalinity red mud particles in porous media was derived from granular thermodynamics, complying with the complementary motion process of two‐phase flows (i.e., hydroxide ions and red mud powder). From the perspective of energy dissipation provoked by particle migration and molecular thermal motion, a migration model of hydroxide ions and suspended

To characterize the rate‐dependency and frictional behavior of quasi‐brittle interface material, a coupling rate‐dependent and friction interface model improved from the Park‐Paulino‐Roesler (PPR) cohesive model, is proposed and validated in this paper. Based on the potential function, this novel coupling model forms the basic relationship of traction‐displacement within the interfaces, in which rate

Experimental tests were conducted in the laboratory to investigate the shear behavior of interfaces in grout‐gypsum specimens. Various specimens were created to produce different interface configurations for testing and modeling. The tensile strength measurements indicated that grout has a strength of 1.2 MPa, while gypsum measures 0.52 MPa. For Young's modulus, grout was found to be 9 GPa, in contrast

Pile‐plate road foundation (PRF) is a new type of road foundation arising in recent years. As the seismic wave is an important kind of dynamic loads, the dynamic analysis of the PRF under seismic wave is thus necessary for its dynamic design. To simplify the analysis of the PRF under seismic waves, the PRF is simplified as the periodic pile‐plate road foundation (PPRF) in this study. To establish the

In geo‐energy engineering projects, temperature is an essential environmental variable, and accurately predicting its effect on the thermomechanical properties of geomaterials remains a challenge. Similar to fine‐grained soils, temperature variation is also a crucial factor that affects the stress‐strain response and critical state behavior of coarse‐grained soils. In this study, a thermomechanical

In this work, a fatigue crack propagation model is proposed using the two‐dimensional discrete element method (DEM). The challenge lies in describing the small progressive fatigue crack growth within a single cycle, which is typically much smaller than the size of the smallest particles, making it difficult to continuously capture the loss of contact stiffness. To accurately represent crack increments

A novel theoretical model is proposed to investigate the torsional response of a pile in fractional‐order viscoelastic unsaturated transversely isotropic soil with imperfect contact. This model employs Biot's framework for three‐phase porous media along with the theory of fractional derivatives. Unlike previous models that assume continuous displacement at the pile–soil interface, this study uses the

A theoretical model describing the one‐dimensional large strain consolidation of the modified Cam‐Clay soil is presented in this paper. The model is based on the Lagrangian formulation and is capable of featuring the variability of soil compressibility (inherently due to the direct incorporation of the specific Cam‐Clay plasticity model) and permeability, as well as the impact of the overconsolidation

The study presents a comprehensive study on the assessment of the bearing capacity of closely spaced strip footings on c‐ø soil, considering spatial variability in soil properties. A linear elastic model is employed for footings and elastic–perfect plastic soil behaviour via the Mohr–Coulomb yield criterion. Soil properties obtained from extensive field investigations of Taranto Blue Clay (TBC) in

In this paper, the stress solutions around shallow buried tunnels with arbitrary shapes in transversely isotropic rock mass are derived. First, the hybrid penalty function method is employed to derive the mapping function from an arbitrarily shaped tunnel to a unit circle in the complex plane. Then the complex function method and the Schwartz alternating method are used to derive the solution of the

The pulsed hydraulic fracture (PHF) is a stimulation technique of reservoir, which can lower breakdown pressure by generating fatigue fracture. In this study, a fatigue cohesive law is proposed and embedded into the finite‐discrete element method (FDEM) to describe the fatigue failure of the interface under cyclic loading. The fatigue is assumed to result from the accumulation of plastic deformation

This paper presents a series of laboratory free‐fall cone penetrometer (FFCP) tests conducted on marine clay samples collected from the Gulf of Finland in the Baltic Sea. Subsequently, these tests are replicated numerically with the generalized interpolation material point method (GIMP) simulations. First, the paper gives laboratory‐scale FFCP experiment results used for the validation of the numerical

Strongly anisotropic geomaterials, such as layered shales, have been observed to undergo fracture under compressive loading. This paper applies a phase‐field fracture model to study this fracture process. While phase‐field fracture models have several advantages—primarily that the fracture path is not predetermined but arises naturally from the evolution of a smooth non‐singular damage field—they provide

Analytical porothermoelastodynamic (PTED) solutions are rare in the literature. The responses of fluid‐saturated porous materials subject to coupled mechanisms of loading frequency, fluid flow, stress, and temperature are unclear. In this paper, we use the PTED theory and derive the analytical solutions of pore pressure, temperature, stress, force, and displacement for an isotropic fluid‐saturated

In this article, we formulate a computational large‐deformation‐plasticity (LDP) periporomechanics (PPM) paradigm through a multiplicative decomposition of the deformation gradient following the notion of an intermediate stress‐free configuration. PPM is a nonlocal meshless formulation of poromechanics for deformable porous media through integral equations in which a porous material is represented

Backward erosion piping (BEP) is a leading internal erosion mechanism for flood protection system failures. A model capable of predicting critical hydraulic conditions for BEP initiation at multiple scales while also incorporating soil variability is a pressing need. This study formulates and validates a novel multiscale probabilistic BEP initiation framework with incorporation of soil variability

Backward erosion piping (BEP) is a significant contributor to failures in global flood protection infrastructure, yet it remains among the least understood geotechnical phenomena, particularly concerning the fundamental mechanisms driving its initiation. This study focuses on the development of a novel stochastic framework for the prediction of critical hydraulic gradients causing BEP initiation. The

To study and enhance the obstacle‐crossing performance of the electric shovel, an obstacle‐crossing model that employs a coupling methodology integrating the discrete element method (DEM) and multi‐body dynamics (MBD) is constructed. Secondly, the influence of grouser height (GH), track velocity (TV), slope inclination (SI) and slope height (SH) on obstacle‐crossing performance is investigated through

Molecular dynamics (MD) and the material point method (MPM) are both particle methods in spatial discretization. Molecular dynamics is a discrete particle method that is widely applied to predict fundamental physical properties and dynamic materials behaviors at nanoscale. The MPM is a continuum‐based particle method that was proposed about three decades ago to simulate large‐deformation problems involving

The dynamic pile‐soil interaction significantly affects the accuracy of pile vibration response analysis. However, currently, there is no well‐established method for simulating pile toe soil under high‐strain dynamic loading (HSDL), which presents a major challenge for pile driving analysis. This paper proposes a fictitious soil pile model to simulate reactions and stress wave propagation in the base

The numerical investigation in this study focuses on the propagation of hydraulically driven fractures in deformable porous media containing two fluid phases. The fully coupled hydro‐mechanical governing equations are discretized and solved using the extended element‐free Galerkin method. The wetting fluid is injected into the initial crack. The pores are filled with both wetting and non‐wetting fluid

A three‐field finite element (FE) model for dynamic porous media considering the de la Cruz and Spanos (dCS) theory is presented. Due to fluid viscous dissipation terms, wave propagation in the dCS theory yields an additional rotational wave compared to Biot (BT) theory. In addition, introducing porosity as a dynamic variable in the dCS model allows solid‐fluid nonreciprocal interactions. Due to the