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Effect of pre-existing infilled fracture on characteristics of failure zones around circular opening Comput. Geotech. (IF 5.3) Pub Date : 2024-03-13 Zhihong Zhao, Yuanfeng Suo, Zhina Liu, Xingguang Zhao, Bing Liu, Yaoyao Zhao, Shuang Zhang
Understanding and predicting failure zones in fractured rocks around an underground opening is critical in designing excavation and support schemes. It is known that two symmetrical V-shaped failure zones of a circular opening occur in a homogeneous rock mass, but effect of infilled fractures on geometry of failure zone still remains poorly understood. In this study, biaxial compression tests were
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Failure analysis of soil-rock mixture slopes using coupled MPM-DEM method Comput. Geotech. (IF 5.3) Pub Date : 2024-03-13 Jianguo Li, Bin Wang, Pengzhi Pan, Hao Chen, Di Wang, Penglin Chen
A 3-D concurrent MPM-DEM (material point method - discrete element method) scheme is proposed and developed in this paper to simulate soil-rock mixture slopes. The MPM and DEM are treated as two individual parts linked by the coupled contact force. Compared with MPM, the proposed MPM-DEM scheme provides a more realistic contact detection. Compared with DEM, the scheme can model such cases more efficiently
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Machine learning applications to load and resistance factors calibration for stability design of caisson breakwater foundations Comput. Geotech. (IF 5.3) Pub Date : 2024-03-13 Nhu Son Doan, Van Ha Mac, Huu-Ba Dinh
Due to the limit state functions commonly defined in implicit fashions, calibrations of load and resistance factors for limit state designs of breakwater foundations using Monte Carlo simulations (MCSs) are time-consuming and computationally expensive. This study proposed a practical framework combining the newly developed metamodels and an efficient optimization to address these computational issues
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An extended 3D discontinuous deformation analysis method considering bolt supports and its application in tunnels Comput. Geotech. (IF 5.3) Pub Date : 2024-03-12 Zhang Yanhuan, Li Liping, Fan Hongyun, Chen Guangqi, Liu Hongliang, Gao Jingyao, Wang Meixia
Implementing bolt supports is the main means of controlling block instability. However, the original three-dimensional discontinuous deformation analysis method (3D ODDA) is still unable to simulate bolt supports, making it difficult to study the control effect of bolt supports on block instabilities. Therefore, an extended three-dimensional discontinuous deformation analysis method (3D EDDA) that
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A depth-averaged SPH-FV landslide dynamic model for evaluating hazard zones Comput. Geotech. (IF 5.3) Pub Date : 2024-03-12 Yuming Wu, Zhihua Yang
Thousands of landslides worldwide lead to significant casualties and property damage. A numerical model is crucial for simulating the runout of possible future landslides and generating reliable hazard zone maps. Two main methods can be adopted to simulate motion: one based on the Eulerian description and the other based on the Lagrangian description. Each description offers varying adaptability to
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Finite element implementation of a seepage-stress coupling method for solid-liquid-gas three phases in porous media considering compressible gas Comput. Geotech. (IF 5.3) Pub Date : 2024-03-12 Hairong Zhang, Lanhao Zhao, Weiguo Wang
Some existing coupling models of porous media ignore the gas phase or gas compressibility, making them inadequate in describing the gas transport process and their effects on water infiltration and solid deformation. However, consideration of gas compressibility becomes crucial when involving the confined gas. Furthermore, the unsteady seepage free surface problem may make the numerical solution of
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Installation of PHDs accelerates the self-weight consolidation of dredged sludge yards by considering the influence of the stacking process Comput. Geotech. (IF 5.3) Pub Date : 2024-03-11 Yi Pan, Chuanxun Li
In dredging projects, dredged sludge is usually stacked in yards and treated by installing prefabricated horizontal drains (PHDs). A research gap exists in the large-strain self-weight consolidation of dredged sludge stacked in yards treated with PHDs. In this study, a nonlinear large strain consolidation model for dredged sludge treated with PHDs was established, considering its nonlinear compressibility
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Study on the multi-field-coupling model of saline frozen soil considering ice and salt crystallization Comput. Geotech. (IF 5.3) Pub Date : 2024-03-11 Zean Xiao, Kangliang Li, Jieyun Duan, Shaofei Zhang
Sulfate soil, a typical saline soil in Qinghai Tibet Plateau, has the engineering characteristics of salt expansion and frost heave, which are seriously threatening the operation and safety of engineering buildings. Based on the phase diagram theory, we determined the functions of ice and hydrated salt in pore solution under different concentrations and temperatures. Then we further established a
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Method for identifying the main factors controlling landslides based on a particle coupling algorithm simulating the ultimate state of a gas pipeline Comput. Geotech. (IF 5.3) Pub Date : 2024-03-10 Taolong Xu, Feng Xiong, Fangjian Liao, Youlv Li, Hongye Jiang
To determine the ultimate load of buried gas pipelines under different working conditions under landslide action and provide a quick decision-making tool for landslide risk management, a pipe–soil coupling model is established based on smoothed particle hydrodynamics and the finite element method. The double elastic slope criterion and fault tree analysis method are used to perform limit and failure
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Minimizing breakage and optimizing ballast reusability during excavation for ballast cleaning: A computationally efficient model and operational parameter recommendations Comput. Geotech. (IF 5.3) Pub Date : 2024-03-10 Yixiong Xiao, Liang Gao, Shunwei Shi, Chunyu Wang, Weitao Cui, Yue Li
During the excavation for ballast cleaning, intense interactions result in ballast breakage and damage. This reduces both the reusable mass and the mechanical properties of excavated ballast. Given the high rate of ballast breakage, existing breakable ballast models suffer from low computational efficiency and struggle to account for the accumulation of internal damage in particles. Thus, we introduced
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Effect of sand particle shape on micromechanical modeling in direct shear testing Comput. Geotech. (IF 5.3) Pub Date : 2024-03-10 Javier E. Necochea, Esteban Sáez, Kevin J. Hanley
Soil representation in discrete element method (DEM) simulations is a complex process due to the intrinsic variability in grain shape. Many methods have been proposed to include shape effects in DEM, from rolling friction to aspherical particle representations such as ellipsoids or polyhedra. In this paper the micromechanical differences between two commonly used methods of shape representation, rolling
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Stability analysis of reservoir slope under water-level drawdown considering stratigraphic uncertainty and spatial variability of soil property Comput. Geotech. (IF 5.3) Pub Date : 2024-03-10 Fanhua Meng, Huafu Pei, Ming Ye, Xingjin He
Time-dependent stability analysis of reservoir slopes during water level drawdown is crucial. Due to the sparse investigation, the stability analysis often contains geological uncertainty (e.g., stratigraphic uncertainty) and geotechnical uncertainty (e.g., spatially varying soil properties). Nevertheless, their coupling effect on the reservoir slopes has not been well considered in the past. A data-driven
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Nonlinear consolidation finite element analysis of a layered soft soil foundation under multistage loading based on the continuous drainage boundary Comput. Geotech. (IF 5.3) Pub Date : 2024-03-08 Ke Ma, Zi-qing Gao, Jia Wang, Yi Zhang, Meng-fan Zong, Wen-bing Wu, Guo-xiong Mei
To comprehensively consider the impacts of stratification, residual pore water pressure, soil nonlinearity, and boundary permeability on consolidation settlement of soft soil foundations for accurate prediction, a continuous drainage boundary condition is proposed in this study that reflects the residual pore pressure under multistage loading, and a nonlinear elastic constitutive model based on the
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Creep model of chlorite schist in deep buried strata and its application in tunnel squeezing deformation prediction Comput. Geotech. (IF 5.3) Pub Date : 2024-03-08 Liu Yang, Hui Zhou, Fanjie Yang, Chuanqing Zhang, Wenbo Liu, Sayed Muhammad Iqbal, Hongliang Tu, Yong Yang
Excavation of long, deep, buried tunnels under high stress and soft rock conditions is highly challenging because the surrounding rock may undergo severe time-dependent squeeze deformation or may even collapse during construction, which poses a significant threat to the stability of tunnels. The creep constitutive model can be used to predict time-dependent extrusion deformation; however, the conventional
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Corrigendum to “Analysis on the coverage area of flow-like landslides under random strength parameters using an ANN-based stochastic analysis approach” [Comput. Geotechn. 168 (2024) 106166] Comput. Geotech. (IF 5.3) Pub Date : 2024-03-07 Weijie Zhang, Xin Wang, Lei Xiong, Zili Dai, Wei Zhang, Jian Ji, Yufeng Gao
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Stabilizing nodal integration in dynamic smoothed particle finite element method: A simple and efficient algorithm Comput. Geotech. (IF 5.3) Pub Date : 2024-03-07 Wei-Hai Yuan, Ming Liu, Bei-Bing Dai, Yuan Wang, Andrew Chan, Wei Zhang, Xiang-Cou Zheng
The Smoothed Particle Finite Element Method (SPFEM) is a powerful numerical tool for the modelling of large deformation problems in the field of geomechanics. However, the standard SPFEM with nodal integration suffers from the rank deficiency problem due to under-integration. In this study, an hourglass-control based stabilization scheme is presented to overcome the rank deficiency in standard SPFEM
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Subgraph centrality: A complex network metric to characterize the contact network between sheared sand particles Comput. Geotech. (IF 5.3) Pub Date : 2024-03-06 Siavash Amirrahmat, Khalid A. Alshibli
Characterizing the effects of particle interaction and the influence of the fabric of granular materials is one of the primary challenges in studying the constitutive behavior of granular materials. The evolution of the fabric of granular materials and their response to applied stresses have been investigated extensively in the literature. Contact number is one of the most common metrics used to assess
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A new one-dimensional consolidation creep model for clays Comput. Geotech. (IF 5.3) Pub Date : 2024-03-05 Siyuan Ren, Haiman Wang, Wankui Ni, Bingquan Wu
Creep deformation is a prevalent form of deformation infill projects, and accurately characterizing the creep of fill soils is essential for ensuring the safe and reliable operation of these projects. To develop a novel variable-order fractional creep model that describes the consolidation creep behavior of fill soils, this research enhances the fractional order algorithm to achieve more precise fractional
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A numerical investigation of the role of basements on tunnel-frame interaction in sandy soil Comput. Geotech. (IF 5.3) Pub Date : 2024-03-05 Jingmin Xu, Jiashu Gui, Brian Sheil
This paper investigates the role of basement depth on the response of framed buildings to tunnel construction in sandy soil using finite element modelling. Six frames are considered to explore the influences of tunnel cover depth, building width, eccentricity, and the number of storeys on the role of basement depth. The numerical models adopt the hypoplastic constitute model to simulate the behaviour
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Insights from 3D numerical simulations on the impact of tunnelling on vertical and battered pile groups under lateral loading Comput. Geotech. (IF 5.3) Pub Date : 2024-03-04 Mukhtiar Ali Soomro, Kai Liu, Zhen-Dong Cui, Naeem Mangi, Dildar Ali Mangnejo
This study presents the impact of tunnelling on a battered and vertical pile groups when subjected to lateral loads. A comprehensive investigation was undertaken to examine the effects of varying the tunnel depth in relation to the length of the pile group, as well as the direction of the lateral load (i.e., towards and away from the tunnel). A sophisticated hypoplastic model, which has the ability
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Inverse characterization of shrinkage and fracture of bentonite buffer material for geological repositories of nuclear waste using an integrated DIC-FEM approach Comput. Geotech. (IF 5.3) Pub Date : 2024-03-04 Mohammad Rahmani, Abdullah Azzam, Julia Grasley, Yong-Rak Kim, Jongwan Eun, Seunghee Kim
This study presents an inverse method integrating the digital image correlation (DIC) and finite element modeling (FEM) to characterize the shrinkage and fracture of desiccating bentonite clay, considered a buffer material in engineered barrier systems for nuclear waste repositories. Rheology tests were conducted to measure elastic moduli of bentonite at various moisture contents, and a restrained
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3D seismic mask auto encoder: Seismic inversion using transformer-based reconstruction representation learning Comput. Geotech. (IF 5.3) Pub Date : 2024-03-04 Yimin Dou, Kewen Li
Estimating acoustic impedance from seismic data is a crucial step in reservoir characterization. While data-driven impedance inversion based on deep learning has shown promising results, it relies heavily on extensive well logs for labeling, which is often impractical in many exploration scenarios. Recently, the zero-shot or few-shot learning performance of Pretrained Foundation Models like Generative
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Elastoplastic constitutive model of gravelly soil and its validation through numerical analysis of the Kobe Port Island liquefaction Comput. Geotech. (IF 5.3) Pub Date : 2024-03-04 Xingliang Wang, Bin Xu, Hui Su, Rui Pang
The liquefaction of gravelly soil has been demonstrated in many earthquakes, but the constitutive model to predict its liquefaction behavior is limited. The dilatancy equation plays an important role in establishing elastoplastic models of geotechnical materials. Recognizing the unique dilatancy characteristics of gravelly soil, this study introduces an improved nonlinear dilatancy equation into the
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Design method of geotechnical capacity for tripod suction bucket foundations in clay Comput. Geotech. (IF 5.3) Pub Date : 2024-03-04 Weichen Wang, Dengfeng Fu, Yue Yan, Zefeng Zhou
The tripod bucket foundation is a prevailing selection for the fixed offshore wind turbine. The reliable evaluation of its geotechnical stability under harsh marine environment loading is of increasing demand by offshore engineering. Previous publications concerning the tripod bucket foundation are more focused on the relative compact size, where the skirt length is less than the diameter of the bucket
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Analytical solution for longitudinal dynamic response of shield tunnel linings using the state-space method Comput. Geotech. (IF 5.3) Pub Date : 2024-03-02 Z.P. Chen, Y.W. Zang, Z.X. Yang, R.Q. Xu, X.N. Gong, J.J. Yan, J.C. Wang
Using the state-space method and D'Alembert's principle, a novel analytical solution was derived for the longitudinal dynamic response of shield tunnel linings. Timoshenko beams are used to model the tunnel lining rings, the joints connecting the rings are idealized by a series of springs, and the lining–surrounding soil interaction is described by distributed reaction springs with viscous dampers
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A state-dependent bounding surface model of coarse-grained materials considering effect of initial grain size distribution Comput. Geotech. (IF 5.3) Pub Date : 2024-03-01 Jiarui Chen, Chunshun Zhang, Congying Li, Chenhui Guan
The stress–strain behavior of coarse-grained materials is significantly influenced by the initial grain size distribution (GSD). However, limited research on constitutive models for coarse-grained materials considers this influence. In this study, we introduced an initial GSD index, , measuring the distance between the initial GSD and the ultimate GSD, which associates the initial GSD with the ultimate
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Anisotropic stiffness and strength of concrete rock mass equivalent with sets of persistent joints Comput. Geotech. (IF 5.3) Pub Date : 2024-03-01 Dongjie Hua, Guohua Zhang, Feng Xiong, Zhicheng Tang, Qinghui Jiang
The joint network significantly influences the mechanical behavior of rock masses. The anisotropic stiffness and strength of the rock mass are analyzed in this study by means of laboratory tests, theoretical derivations and numerical simulations. Firstly, biaxial compression tests are performed on cubic specimens with a side length of 300 mm under lateral stresses of 0 MPa, 1 MPa, 2 MPa, 4 MPa and
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Modeling damage evolution in granite under temperature using a thermo-mechanical grain-based FDEM model Comput. Geotech. (IF 5.3) Pub Date : 2024-03-01 Shirui Zhang, Shili Qiu, Quan Jiang, Chengzeng Yan, Liangyin Zhou, Xinhong Li
Temperature has a significant impact on the microscopic damage and macroscopic mechanical properties of brittle heterogeneous rocks. The grain-based model and grain-growth method were used to reconstruct Beishan granite (BsG) based on the combined finite-discrete element method (FDEM). In addition, a uniaxial loading simulation method for a preheated model was proposed to study the effect of temperature
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Understanding structural anisotropy and mechanical properties of Na-montmorillonite with crystalline swelling and uniaxial deformation under different hydration degrees Comput. Geotech. (IF 5.3) Pub Date : 2024-03-01 Bonan Li, Chengkai Li, Yilin Gui, Haifei Zhan, Yuantong Gu, Miao Yu, R. Kerry Rowe
Montmorillonite (MMT) is the main component of bentonite and its mechanical behaviour is sensitive to hydration degrees and structural anisotropy. In this study, molecular dynamics (MD) simulations were used to investigate the atomic structures and fracture behaviour of Na-MMT. The different deformation scenarios are applied to the Na-MMT with different hydration levels within the crystalline swelling
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A gradient-smoothed material point method for reducing cell crossing noise in large deformation problems Comput. Geotech. (IF 5.3) Pub Date : 2024-02-29 Weijian Liang, Kai-Yuan He, Yin-Fu Jin, Zhen-Yu Yin
The material point method (MPM) is an effective numerical technique for simulating extreme events with large deformations. However, the standard MPM suffers from cell crossing noise, which arises from the use of material points as integration points and piecewise linear shape functions with a discontinuous gradient at cell boundaries. In this study, we propose a novel gradient-smoothed material point
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Three-dimensional Biot consolidation solution of adjacent aquitards induced by regional drawdown of the water table Comput. Geotech. (IF 5.3) Pub Date : 2024-02-29 Weijie Cheng, Weitao Yang, Linhai Lv, Cheng Dong, Zhongming Xie, Guoxiong Mei
This study establishes a consolidation model of adjacent aquitards induced by drawdown in a limited area based on Biot three-dimensional consolidation theory in a rectangular coordinate system. Through the Fourier-Laplace integral transform, decoupling transform, differential equation group and matrix theory, the analytical solutions of the deformation and internal excess pore-water pressure of the
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A numerical simulation-based ANN method to determine the shear strength parameters of rock minerals in nanoscale Comput. Geotech. (IF 5.3) Pub Date : 2024-02-29 Qing Lü, Shi-hao Liu, Wei-ze Mao, Yang Yu, Xu Long
Rock is a heterogeneous material composed of multiple minerals, whose microscopic mechanical properties have a significant impact on the macroscopic mechanical properties of rocks. The elastic modulus and hardness of minerals could be measured by nanoindentation tests. However, determination of shear strength parameters (e.g., the cohesion and friction angle) of minerals in nanoscale is still a challenging
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Multicomponent gases (CH4/CO2/C6H6) diffusion and adsorption in unsaturated bentonite: A molecular insight Comput. Geotech. (IF 5.3) Pub Date : 2024-02-29 Qiao Wang, Haijian Xie, Huaxiang Yan, Fusheng Zha, Long Xu
Diffusion and adsorption are the key to describe the behavior of gas pollutant species in engineered clay barrier. In this study, the diffusion and adsorption properties of multicomponent gases (CH/CH/CO) in montmorillonite interlayer were investigated at the molecular level based on molecular dynamics (MD) simulations considering the interaction among gases, water, and montmorillonite. Moisture content
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A simplified model for energy pile-supported embankment Comput. Geotech. (IF 5.3) Pub Date : 2024-02-28 Yang Zhou, Jinyun Wang, Chong Li, Gangqiang Kong
Energy piles can be used for road de-icing in winter or cooling in summer in the pile-supported embankment. This paper presents a simplified model for energy pile-reinforced foundation beneath the embankment to investigate thermal effects of piles on the performance of the system. By considering thermo-mechanical stress–strain of the pile and foundation soil, thermally-induced pile-soil interaction
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Interpolation of non-stationary geo-data using Kriging with sparse representation of covariance function Comput. Geotech. (IF 5.3) Pub Date : 2024-02-28 Cong Miao, Yu Wang
Interpolation of spatially varying measurements, e.g., spatial variation of a geotechnical property along depths, is often needed in many disciplines, including geotechnical engineering. Among various interpolation methods, geostatistical methods, such as Kriging, are popular since they are able to not only provide the best estimates but also quantify the interpolated uncertainty. However, Kriging
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General pyramid method for removability analysis of concave blocks in fractured rock mass and its engineering application Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Qingfa Chen, Shaoping Wang, Wenjing Niu
The sudden collapse or sliding of concave blocks under external force interference may cause the overall or local instability of engineering rock mass, and then cause serious casualties and economic losses, making the removability analysis of concave blocks become the focus of rock mechanics research. In order to analyze the removability of concave blocks in fractured rock mass, the basic assumption
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Micromechanical analysis of pipeline-soil interaction in unsaturated granular soil undergoing lateral ground movement Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Yu Peng, Zhen-Yu Yin, Fu-Ping Gao
The micro- to macro-scale pipeline-soil interaction mechanism in unsaturated granular soil remains unclear. This study investigates the unsaturated suction effect on the pipeline-soil interaction undergoing lateral ground movement using coupled discrete element method and finite element method (DEM-FEM) simulations. The Johnson-Kendall-Roberts (JKR) adhesive model was used to simulate the interparticle
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Semi-analytical solution for one-dimensional consolidation of multi-layered soil considering non-Darcian flow and multi-stage loading under continuous drainage boundary Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Mengfan Zong, Jing Zhang, Wenbing Wu, Yi Zhang, Guoxiong Mei
Taking non-Darcian flow and multi-stage loading into consideration, a semi-analytical solution for one-dimensional consolidation of multi-layered soil under continuous drainage boundary based on a linearization method was derived in this paper. The correctness of the proposed solution was verified by comparing with the existing solutions and finite element method results. Accordingly, the influence
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Numerical study of effective parameters on true triaxial test results in rigid type apparatus Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Abbas Maadikhah, Hamed Molladavoodi, Ali Mortazavi, Hadi Atapour
Operational parameters in true triaxial loading devices (TTA), such as the loading rod dimensions, friction between the loading platens and sample faces, loading gap, and one-side loading may affect the test results. Knowledge of the effect of each parameter is very important to correctly interpret rock behavior and to optimize these devices. Employing the Flac3D finite difference software, a rigid
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A PINN-based modelling approach for hydromechanical behaviour of unsaturated expansive soils Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Kai-Qi Li, Zhen-Yu Yin, Ning Zhang, Jian Li
Hydromechanical behaviour of unsaturated expansive soils is complex, and current constitutive models failed to accurately reproduce it. Different from conventional modelling, this study proposes a novel physics-informed neural networks (PINN)-based model utilising long short-term memory as the baseline algorithm and incorporating a physical constraint (water retention) to modify the loss function.
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Influence of difference in deformation modulus between asphalt concrete core and transition layer on core behavior and difference threshold determination Comput. Geotech. (IF 5.3) Pub Date : 2024-02-27 Weifeng Cao, Lifeng Wen, Yanlong Li, Yunhe Liu, Zheng Si, Li Wu
Asphalt concrete core is the main impermeable structure of asphalt concrete core dams (ACCDs). The deformation modulus difference between the core and transition layer is directly related to the core behavior, especially the arch effect. This paper mainly studies the threshold of the deformation modulus difference between the transition and asphalt concrete core and the core arc safety. A database
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Numerical study on stability of geosynthetic-encased stone column-supported embankments based on equivalent method Comput. Geotech. (IF 5.3) Pub Date : 2024-02-26 Ling Zhang, Bocheng Peng, Shuai Zhou, Penglu Cui, Yangyang Liu
The application of geosynthetic-encased stone column-supported embankments (GESC-supported embankments) has garnered significant attention in geotechnical engineering, with limited investigations into their slope stability. In this paper, an equivalent method was proposed to establish GESC-supported embankment models through three-dimensional finite difference method (3D-FDM). Responses of factor of
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Finite strain elastic visco-plastic consolidation model for layered soils with vertical drain considering self-weight loading and nonlinear creep Comput. Geotech. (IF 5.3) Pub Date : 2024-02-26 Ding-Bao Song, Kai Lou, Wen-Bo Chen, Pei-Chen Wu, Jian-Hua Yin
Prefabricated vertical drains (PVDs) combined with vacuum and/or surcharge loading have been widely adopted to improve the strength of soft soils. Precise consolidation analysis is the theoretical basis for the design of preloading method with PVD. Current consolidation theories for layered soils with PVD seldom consider the influence of large strain, nonlinear creep, and self-weight loading simultaneously
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Swin transformer based transfer learning model for predicting porous media permeability from 2D images Comput. Geotech. (IF 5.3) Pub Date : 2024-02-24 Shaoyang Geng, Shuo Zhai, Chengyong Li
Soil and rock, as typical porous media, widely exist in natural slopes and landslides and underground reservoirs. Accurate predicting the permeability of porous media is crucial in preventing geological disasters and extracting underground energy. The conventional methods for obtaining the porous media permeability involve experiments or numerical simulations, both of which are usually time-consuming
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Non-linear behaviour of soil–pile interaction phenomena and its effect on the seismic response of OWT pile foundations. Validity range of a linear approach through non-degraded soil properties Comput. Geotech. (IF 5.3) Pub Date : 2024-02-24 Eduardo Rodríguez-Galván, Guillermo M. Álamo, Juan J. Aznárez, Orlando Maeso
The effect of non-linear and inelastic behaviour of the soil–pile interaction on the seismic response of offshore wind turbine pile foundations embedded in sandy soils is analysed. For this purpose, the responses obtained assuming three different Beam on Dynamic Winkler Foundation (BDWF) models are compared: a Plastic Non-Linear Model (PNLM), an Elastic Non-Linear Model (ENLM) and a simple elastic
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CasMDN: A deep learning-based multivariate distribution modelling approach and its application in geotechnical engineering Comput. Geotech. (IF 5.3) Pub Date : 2024-02-24 Jiawen Zhang, Shuai Han, Mingchao Li, Heng Li, Wenchao Zhao, Jia Wang, Hui Liang
Characterizing multivariate parameters is crucial for uncertainty analysis in geological engineering. However, the commonly used multivariate distribution function-based methods are increasingly challenged by issues of diminished accuracy and efficiency, as well as the inclusion of subjective processes, due to the growing complexity of data structures resulting from advanced data acquisition techniques
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Coupled SPH-FEM analysis of piled power transmission tower system subjected to debris flow Comput. Geotech. (IF 5.3) Pub Date : 2024-02-24 Lei Zhang, Biao Xu, Dahai Wang
Debris flow is a type of highly dangerous geological hazard, which can pose significant threat to the safety of various infrastructures including power transmission tower system. However, the performance of piled power transmission tower system against debris flow has yet to be well investigated. A validated coupled SPH-FEM method was employed to investigate the behavior of a typical piled power transmission
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Research on fracture propagation of hydraulic fracturing in a fractured shale reservoir using a novel CDEM-based coupled HM model Comput. Geotech. (IF 5.3) Pub Date : 2024-02-23 Bo Zhang, Tiankui Guo, Ming Chen, Jiwei Wang, Zhanqing Qu, Haiyang Wang, Heng Zheng, Wuguang Li
Shale reservoirs are usually buried deep, and contain lots of complex natural fractures (NFs) under the influence of tectonic stress and faults. Previous studies usually focus on small-scale reservoir models and there is also a lack of research that completely focuses on NF characteristics. Using the continuous-discontinuous element method (CDEM), a Hydro-Mechanical (HM) coupling model was constructed
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A hydrodynamic finite element model for chemo-mechanically loaded poroelastic materials Comput. Geotech. (IF 5.3) Pub Date : 2024-02-22 Yanni Chen, Itai Einav
Porous geomaterials are exposed to intricate hydrochemical environments in nature. Consequential dissolution over long geological periods can degrade their mechanical properties. Rooted in a recently developed hydrodynamic formulation, this work develops a numerical model to clarify the chemo-hydro-mechanical processes involved, including coupled solute and solvent diffusions through pore fluid transients
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A New Modified Replacement Method for Discrete Element Modelling of Rockfill Material Comput. Geotech. (IF 5.3) Pub Date : 2024-02-22 Reza Asadi, Mahdi M. Disfani, Behrooz Ghahreman-Nejad
Rockfill, a granular material with particle sizes usually in the range of 2 cm to 1 m, is a commonly used construction material in a range of civil engineering applications. Rockfill’s complex behaviour mainly stems from its inherently large particle size grading on one hand and its discrete and heterogeneous nature on the other hand. The investigation of mechanical behaviour of rockfill requires expensive
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Hybrid LBM and machine learning algorithms for permeability prediction of porous media: A comparative study Comput. Geotech. (IF 5.3) Pub Date : 2024-02-20 Qing Kang, Kai-Qi Li, Jin-Long Fu, Yong Liu
Investigation of porous media’s permeability is vital for underground resource extraction. Due to the disordered internal structures, it remains a challenge to accurately evaluate the permeability of natural porous media. This study introduces a novel hybrid model that combines the lattice Boltzmann method and different machine learning algorithms to predict porous media’s intrinsic permeability. Firstly
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Reconstructing unsaturated infiltration behavior with sparse data via physics-informed deep learning Comput. Geotech. (IF 5.3) Pub Date : 2024-02-20 Peng Lan, Jingjing Su, Shuairun Zhu, Jinsong Huang, Sheng Zhang
In this paper, we propose a novel framework, physics-informed deep learning (PIDL), which combines a set of data- and physics-driven modeling methods along with an uncertainty assessment technique, to solve the ill-posed inverse problems in unsaturated infiltration and make plausible moisture field predictions. Specifically, PIDL integrates three methods: physics-informed neural network (PINN), multi-fidelity
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Real-time classification model for tunnel surrounding rocks based on high-resolution neural network and structure–optimizer hyperparameter optimization Comput. Geotech. (IF 5.3) Pub Date : 2024-02-20 Junjie Ma, Chunchi Ma, Tianbin Li, Wenjin Yan, Roohollah Shirani Faradonbeh, Haitao Long, Kunkun Dai
An accurate and real-time identification of the quality grades of tunnel surrounding rocks is essential for efficient tunneling and geological hazard prevention when using tunnel boring machines (TBMs). In this study, an intelligent surrounding rock classification (SRC) model based on TBM operational parameters was constructed using the simultaneous optimization (SO) of the network structure and optimizer
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A discrete model for dynamic structure-soil-structure interaction systems with embedded foundations Comput. Geotech. (IF 5.3) Pub Date : 2024-02-20 Shupei Chen, Duofa Ji, Changhai Zhai, Qifang Liu, Lili Xie
Discrete models consisting of lumped masses, springs, and dashpots have been widely used in studies on the interaction between upper building clusters and underlying soils. However, past studies on discrete models have mainly focused on building clusters founded at the ground surface, ignoring the kinematic interaction between the foundation groups and the surrounding soils. In this study, a discrete
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Three-dimensional discrete element simulation of the triaxial cyclic loading of sandstone based on a nonlinear parallel-bonded stress corrosion model Comput. Geotech. (IF 5.3) Pub Date : 2024-02-20 Ming-Hui Cao, Sheng-Qi Yang, Wen-Ling Tian, Yan-Hua Huang, Man Huang
To reproduce the nonlinear damage of sandstone under cyclic loading, a nonlinear parallel-bonded stress corrosion (N-PSC) model is developed based on the linear parallel bond (LPB) model in particle flow code (PFC). The damage caused by cyclic loading is simulated by nonlinearly changing the bond diameter according to the nonlinear changes in the axial plastic strain of sandstone. The results show
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DEM study on the dynamic behaviors of binary mixtures with the same equivalent skeleton void ratio Comput. Geotech. (IF 5.3) Pub Date : 2024-02-16 Peng Xia, Denghui Dai, Lei Hang, Zhuofeng Li
Understanding the dynamic behaviors of binary mixtures is important for developing novel liquefaction countermeasures for such soil sites. To this end, discrete element method simulations of undrained cyclic triaxial tests on binary mixtures with the same equivalent skeleton void ratio were performed. The simulation results show that the mechanical behaviors of binary mixtures will transform from fine-dominated
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Analysis on the coverage area of flow-like landslides under random strength parameters using an ANN-based stochastic analysis approach Comput. Geotech. (IF 5.3) Pub Date : 2024-02-16 Weijie Zhang, Xin Wang, Lei Xiong, Zili Dai, Wei Zhang, Jian Ji, Yufeng Gao
In order to address the large-time consumption problem in the three-dimensional numerical simulation and stochastic analysis of flow-like landslides, this study combined the three-dimensional smoothed particle hydrodynamics (SPH) model, artificial neural network (ANN) and Monte-Carlo simulation (MCS) technique to establish a highly efficient prediction approach to speed up the stochastic analysis of
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A micromechanics-based classification of the regimes delineating the behaviour of gap-graded soils Comput. Geotech. (IF 5.3) Pub Date : 2024-02-16 Peter Adesina, Antoine Wautier, Nadia Benahmed
This study presents a micromechanical evaluation of the regimes delineating the behaviour of gap-graded granular assemblies, using discrete element simulations. Dense and loose bimodal assemblies of different fines content were prepared and subjected to drained triaxial compression until the critical state was reached. The regimes delineating the behaviour of the assemblies were evaluated, characterised
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Towards Reliable Barrier Systems: A Constrained XGBoost Model Coupled with Gray Wolf Optimization for Maximum Swelling Pressure of Bentonite Comput. Geotech. (IF 5.3) Pub Date : 2024-02-16 Muntasir Shehab, Reza Taherdangkoo, Christoph Butscher
Bentonite and bentonite mixtures are used as buffer material for deep geological radioactive waste repositories. The proper determination of bentonite maximum swelling pressure is important as it influences the long-term stability and sealing characteristics of the barrier system. We developed a constrained machine learning model based on extreme gradient boosting (XGBoost) algorithm tuned with grey
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Study on long-term service behavior of concrete face rockfill dam considering actual construction quality and constitutive model improvements Comput. Geotech. (IF 5.3) Pub Date : 2024-02-15 Hui Chen, Donghai Liu, Xi Shi
Multiple groups of triaxial shear tests and creep tests were performed on rockfill materials, stress–strain, volume-strain, volumetric creep-time and axial creep-time curves were obtained under different porosity levels. Based on the analysis of the test results, the improved Shen Zhujiang double yield surface elastic–plastic model and the improved creep model were proposed for deformation prediction