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Simulation of saturated–unsaturated seepage problems via the virtual element method Comput. Geotech. (IF 5.3) Pub Date : 2024-04-17 Yinghao Sun, Da Li, Lei Jiao, Zhongxin Liu, Yun Yang, Junda Lyu, Shan Lin
The virtual element method (VEM) demonstrates excellent convergence when dealing with general polygonal mesh shapes and addressing nonlinear problems. Saturated–unsaturated seepage represents a highly nonlinear problem, and generating appropriate meshes poses a challenge in seepage studies. This paper utilizes the VEM to discretize the Richards equation by employing the hydraulic head formulation and
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Large strain consolidation model of vacuum and air-booster combined dewatering Comput. Geotech. (IF 5.3) Pub Date : 2024-04-17 Zhihao Huangfu, An Deng
Prefabricated vertical drains (PVDs) are an established ground improvement method. Mimicking drinking straws, PVDs are installed to convey vacuum pressure in the ground and lift groundwater. However, the dewatering performance is suboptimal in consolidating fine-grained layers. Practical applications have shown that better dewatering performance is achieved through aiding the vacuum dewatering with
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Intelligent construction method and application of large-scale three-dimensional complex discrete fracture network model based on particle swarm optimization algorithm Comput. Geotech. (IF 5.3) Pub Date : 2024-04-17 Zhe Sun, Hanxun Wang, Bin Zhang, Yutao Li, Zhenhua Peng, Shengqing Zhang
Based on the Monte Carlo method, this study proposes a method for constructing a three-dimensional(3D) complex discrete fracture network (DFN) by introducing the particle swarm optimization (PSO) algorithm theory, which realizes the effective fusion of multisource survey data of on-site fractured rock masses and the high-efficiency prediction of high-precision 3D DFN model in unknown intervals. Based
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Multi-scale generative adversarial networks (GAN) for generation of three-dimensional subsurface geological models from limited boreholes and prior geological knowledge Comput. Geotech. (IF 5.3) Pub Date : 2024-04-17 Borui Lyu, Yu Wang, Chao Shi
Delineation of subsurface stratigraphy is an essential task in site characterization. A three-dimensional (3D) subsurface geological model that precisely depicts stratigraphic relationships in a specific site can greatly benefit subsequent geotechnical analysis and designs. However, only a limited number of boreholes is usually available from a specific site in practice. It is therefore challenging
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Run-out distance analysis and impact force estimation for an actual landslide with multiple-barrier system based on a coupled SPH model Comput. Geotech. (IF 5.3) Pub Date : 2024-04-16 Weijie Zhang, Xin Wang, Xinyi Hong, Shuxin Chen, Jian Ji, Yufeng Gao
Previous studies on the impact mechanism of landslides against multiple barriers are commonly based on small-scale and large-scale flume tests in the absence of real-scale landslides. This study established a coupled smoothed particle hydrodynamics (SPH) model to analyze the landslide and multiple barriers in one numerical framework. Thereafter, a flume test of dry sand impacting dual barriers was
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Crack-closure behavior and stress-sensitive wave velocity of hard rock based on flat-joint model in particle-flow-code (PFC) modeling Comput. Geotech. (IF 5.3) Pub Date : 2024-04-16 Peng Siyu, Li Xibing, Li Chongjin, Liang Lisha, Huang Linqi
Micro cracks inside rocks can open or close under variable external forces, which significantly affects the rock modulus and wave velocity. However, conventional simulations typically ignore or homogenize micro cracks primarily because of statistical intricacy and implementation difficulties. A micro-cracked rock model was proposed—characterized by the inclusion of unbonded contacts with an initial
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Comparing 2D and 3D slope stability in spatially variable soils using random finite-element method Comput. Geotech. (IF 5.3) Pub Date : 2024-04-15 Chongzhi WU, Ze Zhou WANG, Siang Huat GOH, Wengang ZHANG
Although the spatial variability of soil properties in slope stability analysis has long been recognized, the adoption of three-dimensional (3D) probabilistic slope models has been limited due to various technical challenges. Utilizing the random finite-element method (RFEM), this study presents a comprehensive comparison between two-dimensional (2D) and three-dimensional (3D) probabilistic slope stability
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A generic framework for mix design of geopolymer for soil stabilization: Composition-informed machine learning model Comput. Geotech. (IF 5.3) Pub Date : 2024-04-15 Jiaqi Zhang, Clarence Edward Choi, Zhengyu Liang, Ruoying Li
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Discrete element modelling of rotary CPT and its applications Comput. Geotech. (IF 5.3) Pub Date : 2024-04-13 Xiaotong Yang, Ningning Zhang, Jian-Min Zhang, Rui Wang
The cone penetration test (CPT) is a major in-situ testing with advantages in efficiency, reliability, and continuous measurement. However, it is often limited in penetration depth in soils such as dense sand and gravel due to high resistance and insufficient pushing force. Studies have shown that rotation can reduce penetration resistance, leading to the development of the rotary CPT. In addition
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Deconvolved Intensifying Artificial Accelerations (DIAA): Theory and application in geostructures Comput. Geotech. (IF 5.3) Pub Date : 2024-04-13 Mohammad Amin Hariri-Ardebili, Masoud K. Poul, Sissy Nikolaou, Aspasia Zerva
In the context of soil–structure interaction analysis, the deconvolution process for computing effective earthquake loads within rock profiles holds significant importance. This study explores the implications of this process on structures founded on rock with linear response and high shear wave velocity. The structures are subjected to both real ground motions and intensifying artificial accelerations
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Reliability analysis of tunnels considering the rock-support interaction using a metamodel-based reliability method Comput. Geotech. (IF 5.3) Pub Date : 2024-04-12 Mengyao Li, Gang Wang, Zhenyue Ma, Fei Kang, Junjie Li
The convergence-confinement method (CCM) is an important approach to analysis the rock-support interaction and to design tunnel and its support. To make an effort on efficient reliability analysis of tunnels integrated with CCM, of which performance functions are mostly highly nonlinear and implicit, a hybrid intelligent algorithm combing uniform design (UD) and Gaussian process regression (GPR) is
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Effect of advance rate on excess pore water pressure induced by TBM tunnelling in saturated sand Comput. Geotech. (IF 5.3) Pub Date : 2024-04-12 Qingfeng Shi, Tao Xu, Dingwen Zhang
The stability of tunnel face can be significantly influenced by the excess pore water pressure induced by tunnel boring machine (TBM) tunnelling in saturated sand. This article aims to investigate the effect of TBM advance rate on the variation of such excess pore water pressure. Numerical and analytical solutions are given for the situations of TBM advance rate faster and slower than the slurry infiltration
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Probabilistic analysis of dual circular tunnels in rock masses considering rotated anisotropic random fields Comput. Geotech. (IF 5.3) Pub Date : 2024-04-12 Thanh Son Nguyen, Weeradetch Tanapalungkorn, Suched Likitlersuang
Considering the spatial variability of rock masses in tunnelling analysis is a challenge in geotechnical engineering. This paper focuses on predicting collapse loads and probabilities of design failure for dual circular tunnels constructed in anisotropic rock masses. This study employs the random adaptive finite element limit analysis method, which incorporates rotated anisotropic random fields, to
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Probabilistic failure envelopes of tripod bucket-supported offshore wind turbines in spatially variable clay based on a novel continuous method Comput. Geotech. (IF 5.3) Pub Date : 2024-04-12 Shuntao Fan, Yurong Zhang, Sa Li, Molin Han
Marine geologic conditions play key roles in offshore geotechnical preliminary design and construction decisions. Tripod bucket foundations are considered promising geotechnical foundations for offshore engineering. Their bearing characteristics are often determined based on tripod foundation system failure modes in uniform clay without considering spatially variable soil properties. Therefore, this
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Synthesising microstructures of a partially frozen salty sand using voxel-based 3D generative adversarial networks Comput. Geotech. (IF 5.3) Pub Date : 2024-04-12 Albert Argilaga, Chaofa Zhao, Hanze Li, Liang Lei
Generating synthetic material microstructures is essential in the numerical modelling of geomaterials. The occurrence of permafrost and saline groundwater overlapping regions is crucial in a series of phenomena, such as carbon emissions and subgrade settlements. The microstructure of geomaterials in these regions is of particular complexity because of the multiphase nature with salty water and ice
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Effect of gravity on granular material flows Comput. Geotech. (IF 5.3) Pub Date : 2024-04-11 Hu Zheng, Wenqing Niu, Wuwei Mao, Yu Huang
Most geohazards and industrial processes are essentially gravity-driven dense granular flows. Deep understanding of the effect of gravity on granular flow is of crucial importance in analyzing the evolution of planetary surfaces. By using a discrete element numerical simulation method, we obtain the evolutionary characteristics of velocity, volume fraction, shear rate and granular temperature during
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An analytical solution for elastoplastic responses of a lined rock cavern for compressed air energy storage considering excavation and high internal pressure Comput. Geotech. (IF 5.3) Pub Date : 2024-04-11 Yingjun Xu, Caichu Xia, Shuwei Zhou, Chen Xu, Xiaoying Zhuang, Timon Rabczuk
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Seismic active earth pressure in nonhomogeneous and anisotropic soils Comput. Geotech. (IF 5.3) Pub Date : 2024-04-11 Ju-Yang Liu, Jie Liu
In previous studies, estimates of the seismic active earth pressure for cohesive soils have typically assumed a constant cohesion strength. However, soils in practical scenarios frequently display considerable nonhomogeneity and anisotropy. In this paper, the authors employed a kinematic framework combined with a rotational failure mechanism consisting of a logarithmic spiral. This study incorporates
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Failure mechanisms of saturated sand under different loading frequencies: Experimental observation and constitutive modelling Comput. Geotech. (IF 5.3) Pub Date : 2024-04-11 Chong Yue, Chengshun Xu, Wei Wu, Ruiqi Wang, Xiuli Du
In this paper, we report on cyclic hollow cylinder tests on Fujian sand and Nanjing sand subjected to different loading frequencies. Depending on the loading frequencies we observed two distinct failure modes, i.e. cyclic mobility and cyclic instability. We proceed to develop a plasticity model to capture the features of our observations. The model employed a new flow rule for the effect of loading
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A thermo-hydromechanical damage model and its application to a deep geological radioactive repository Comput. Geotech. (IF 5.3) Pub Date : 2024-04-11 Zhan Yu, Jian-Fu Shao, Minh-ngoc Vu
This study conducts a numerical analysis of long-term thermo-hydromechanical (THM) processes, with a particular focus on deep geological disposal of radioactive waste. It emphasizes the modeling of damage zones resulting from excavation activities, as well as changes in pore pressure and temperature. The numerical model presented in this paper delineates the fundamental relations of thermo-poro-elasticity
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MPM formulations for the coupled thermo-hydro-mechanical behaviour of saturated and unsaturated soils Comput. Geotech. (IF 5.3) Pub Date : 2024-04-10 Z.Q. Zhan, C. Zhou, C.Q. Liu, J.T. Du
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Stability evaluation model for the tunnel face of large cross-section tunnel excavated by the bench method Comput. Geotech. (IF 5.3) Pub Date : 2024-04-10 Jianhong Man, Hongwei Huang, Daniel Dias, Feiyang Wang, Jiayao Chen
Face stability evaluation is an important issue during large cross-section tunneling, especially in the construction of mountain tunnels. Accurately determining the limit support pressure or safety factor of the tunnel face during bench method excavation is crucial for ensuring the tunnel face stability. This study proposes a combined failure model, termed “two rotation centers-translation-rotation
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Versatile coupling of MPM and FEM: A case study of the stability of vegetated slope Comput. Geotech. (IF 5.3) Pub Date : 2024-04-10 Feng Xu, Hao Chen, Wei Zhang, Bin Wang
Evaluating root reinforcement in the root–soil composite is challenging due to the complex interactions among its components and the variable configurations of the roots. A proposed FEM-MPM coupled model is dedicated to examining the influence of roots on slope stability. The FEM component employed the Truss structural element type to model the dynamics and physics of the root, coupled with a damaged
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DEM for investigating the mechanical properties of porous rock-like materials under uniaxial compression Comput. Geotech. (IF 5.3) Pub Date : 2024-04-09 Chuanfeng Fang, Guoxiong Mei, Weijian Yu, Wei Wang, Wei Hu, Genshui Wu
Porous rock-like materials are widely used in civil engineering. The pore is an important factor affecting the mechanical properties of a material. In this paper, the effects of the number of pores, , and pore size, , on the mechanical properties of porous rock-like materials under uniaxial compression were studied quantitatively via the DEM. Numerical models containing different numbers and sizes
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An analytical–numerical method for the hydraulic–mechanical coupling analysis of time-dependent behavior of pressurized tunnels: Impact of an excavation damaged zone Comput. Geotech. (IF 5.3) Pub Date : 2024-04-09 Milad Zaheri, Masoud Ranjbarnia
The issue of pressurized tunnels has been sufficiently investigated in the literature; nevertheless, the long-term behavior of the problem, which is the case in very squeezing conditions, remains unexplored. From a practical standpoint, the development of a damaged zone around the tunnel, due to the poor quality of blasting for excavation, imposes an additional challenge in predicting tunnel responses
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Estimation of macroscopic failure strength of heterogeneous geomaterials containing inclusion and pore with artificial neural network approach Comput. Geotech. (IF 5.3) Pub Date : 2024-04-09 Jing Xue, Yajun Cao, Zhenyu Yin, Jianfu Shao, Nicolas Burlion
This work is devoted to estimation of macroscopic failure strength of heterogeneous rock-like and cement-based materials. Three representative microstructures are considered, respectively with a random distribution of pores, stiff inclusions, and both pores and inclusions in a pressure-sensitive plastic solid matrix. In the first part, a series of direct numerical simulations are performed by using
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Vertical vibration of rigid strip footings on saturated soil layer with single-phase superstratum Comput. Geotech. (IF 5.3) Pub Date : 2024-04-08 Changjie Zheng, Yuze He, Liming Qu
This paper presents a mathematical formulation that accounts for the effects of groundwater table on the dynamic responses of a rigid strip footing on a finite-thickness soil layer subjected to harmonic vertical loading. The soil layer above the groundwater table is treated as viscoelastic single-phase medium, while the bottom layer is treated as saturated two-phase medium. The governing equations
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State parameter for partially drained paths using a SANISAND model Comput. Geotech. (IF 5.3) Pub Date : 2024-04-08 Abhinanda Dilip, Orestis Adamidis
The state parameter is a fundamental component of critical state compatible, bounding surface plasticity models. Several definitions for the state parameter exist, expressing how far the current state is from critical. However, there is rarely the opportunity to directly assess the chosen state parameter definition within a given model. Here, we use a plasticity model of the SANISAND family to simulate
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Winkler spring coefficients for laterally loaded piles Comput. Geotech. (IF 5.3) Pub Date : 2024-04-08 Rui He, Amir M. Kaynia
Winkler spring methods are widely used in the analysis of piles, but the elastic Winkler spring coefficient is still a subject of research, especially for large-diameter monopiles. This study proposes a three-dimensional (3D) rigorous solution for piles covering the entire range of flexibility in different soil profiles. The simplified 1D Winkler-type model is then calibrated. It is shown that the
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Investigation on synchronous grouting process during shield tunneling in coarse grained ground using CFD-DEM approach Comput. Geotech. (IF 5.3) Pub Date : 2024-04-06 Chao Liu, Delin Zhu, Jie Cui, Lu Jing, Xin Huang
Synchronous grouting plays a pivotal role in the shield tunnelling for mitigating the surrounding soil displacement. A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) model is developed to study the soil-grout interaction in this process during shield-driven in coarse grained ground. The Volume-of-Fluid method is employed to simulate the grouting behavior in CFD. A DEM model undergoes
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Interpretable machine learning scheme for predicting bridge pier scour depth Comput. Geotech. (IF 5.3) Pub Date : 2024-04-06 Taeyoon Kim, Azmayeen R. Shahriar, Woo-Dong Lee, Mohammed A. Gabr
Predicting scour depth around bridge piers is challenging due to the involvement of various uncertain factors and complex processes, making it difficult to obtain accurate results using traditional deterministic models. Recently, nonlinear analysis and prediction using machine learning (ML) techniques that glean statistical structures from input/output data have received substantial attention. With
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Discrete-element based simulation of CPT and SPT on a volcanic sand Comput. Geotech. (IF 5.3) Pub Date : 2024-04-06 Jiangtao Lei, Ningning Zhang, Marcos Arroyo, Matteo Oryem Ciantia
In situ soil characterization often involves penetration tests. The response to both static and dynamic penetration in volcanic sands is known to be controlled by particle crushing, obscuring the effect of density and confinement on the response. This severely limits the use of penetration tests for soil characterization. In this work a virtual calibration chamber (VCC) built using the discrete element
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Scour mechanism around a pipeline under different current-wave conditions using the CFD-DEM coupling model Comput. Geotech. (IF 5.3) Pub Date : 2024-04-05 Huihuan Ma, Boen Li, Shuye Zhang
Understanding the pipeline scour mechanism under different conditions is essential for protection measures. The computational fluid dynamics (CFD) and discrete element method (DEM) are coupled for the simulations. To reduce the computational effort, the coarse-grained method is applied, and the Darcy-Forchheimer porous model is used to replace the far field elements. Both of the porous medium and particles-fluid
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SANISAND-MS-T: Simple ANIsotropic SAND model with Memory Surface for Temperature effects Comput. Geotech. (IF 5.3) Pub Date : 2024-04-05 Yize Pan, Alessandro F. Rotta Loria
In recent years, growing investigations have explored temperature effects on the mechanics of sands, unveiling notable deformations caused by individual and multiple thermal cycles. Despite these advances, the simulation of temperature effects on the mechanics of sands resorts to limited constitutive models – none of which can suitably capture the influence of thermal cycles. This study aims to advance
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A combined machine learning/search algorithm-based method for the identification of constitutive parameters from laboratory tests and in-situ tests Comput. Geotech. (IF 5.3) Pub Date : 2024-04-05 Changjian Zhou, Bin Gao, Bin Yan, Wenxuan Zhu, Guanlin Ye
Accurate numerical analysis in geotechnical engineering heavily relies on the constitutive model and its parameters. The advanced constitutive model can describe the complex mechanical behaviors of soil that may involve a number of parameters. However, determining the values of constitutive parameters always relies on manual trial-and-error, which can be a time-consuming process and not conducive to
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Enhancing ground classification models for TBM tunneling: Detecting label errors in datasets Comput. Geotech. (IF 5.3) Pub Date : 2024-04-04 Saadeldin Mostafa, Rita L. Sousa
Tunnel Boring Machine (TBM) construction, particularly with closed-face TBMs, faces uncertainties due to the inability of the operator to directly observe the ground ahead. These uncertainties can lead to time delays, cost overruns, and accidents. While supervised machine learning techniques have been used to predict geology from TBM sensor data, their performance drops significantly when applied to
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A new multiscale Cosserat model for size effect simulation in granular media Comput. Geotech. (IF 5.3) Pub Date : 2024-04-04 Lingfeng Guo, Xiaolong Li, Lu Ren, Yuanming Lai, Junsheng Chen, Lunyang Zhao
The Cosserat continuum, which contains a length scale factor reported to link with the material’s grain size, is seemingly reasonable to describe the size effect of granular media. However, the physical meaning of is still unclear, and its potential in describing the size effect is seldom studied. In this work, the performance of the conventional Cosserat model in capturing the size effect of granular
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Partitioned analysis of acoustic fluid–solid-saturated porous medium interaction problems by a generalized saturated porous medium model and localized Lagrange multipliers Comput. Geotech. (IF 5.3) Pub Date : 2024-04-04 Jiao Zhang, Shaolin Chen, Hongquan Liu
A partitioned formulation of acoustic fluid–solid-saturated porous medium interaction problems is presented based on a generalized saturated porous medium (GSPM) model and a new localized Lagrange multiplier (LLM) method. In this formula, all various media are modeled as the GSPM and a novel, powerful continuous condition is proposed for the interaction interfaces. This condition applies not only to
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Directivity effect of the spatial distribution of co-seismic landslides affected by near-fault ground motions Comput. Geotech. (IF 5.3) Pub Date : 2024-04-04 Yingbin Zhang, Yao Xiao, Baorui Wang, Wenyi Tang, Pengcheng Yu, Wei Wang, Peiyi Xu, Peter Antwi Buah
Numerous co-seismic landslides occur in near-fault areas, and their spatial distribution seems to correlate well with the distribution of the energy and pulse of near-fault ground motions (NFGMs) in all directions. To confirm the relationship between the energy and pulse characteristics of NFGMs and the spatial distribution of co-seismic landslides, three-dimensional discontinuous deformation analysis
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Analytical solution for displacement-dependent active earth pressure considering the stiffness of cantilever retaining structure in cohesionless soil Comput. Geotech. (IF 5.3) Pub Date : 2024-04-04 Zhaorui Lin, Yalong Jiang, Yi Xiong, Changjie Xu, Yimeng Guo, Chao Wang, Tao Fang
The safety and cost-effectiveness of retaining structure designs depend on the interrelationships among the displacement, stiffness, and earth pressure. Nevertheless, the classical earth pressure theories do not account for these factors. To address this problem, the present study proposes an active earth pressure solution model that considers retaining structure stiffness and displacement. The model
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Systematic investigation into the role of particle multi-level morphology in determining the shear behavior of granular materials via DEM simulation Comput. Geotech. (IF 5.3) Pub Date : 2024-04-03 Meng Fan, Dong Su, Xiangsheng Chen
This study aims to numerically investigate the dependence of shear behaviors of granular materials on particle multi-level morphology, encompassing form (mean of elongation and flatness), angularity, and roughness. To this end, four series of particles—ellipsoidal particles with varying elongation indices () and flatness indices (), and equiaxed concave particles with varying angularity indices ()
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Quantitative risk analysis and parameter sensitivity evaluation of wellbore instability in poroelastic media considering uncertainty of geomechanical parameters Comput. Geotech. (IF 5.3) Pub Date : 2024-04-03 Jiajia Gao, Fuzhi Chen, Yulong Zhao, Meng Meng, Hao Peng, Gengchen Bian, Lei Huang
The randomness and fuzziness of geomechanical parameters make it difficult to directly determine the wellbore collapse and fracture pressures, and thus show significant influence on the risk assessment of drilling operations. Therefore, to effectively analyze the risk of wellbore instability in deep formation, this paper develops the evaluation models of wellbore stability for the vertical well drilled
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Numerical analysis of the impact of drill-and-blast tunneling on an overlying landfill Comput. Geotech. (IF 5.3) Pub Date : 2024-04-02 Yong Zhao, Shijin Feng, Xiaolei Zhang, Qiteng Zheng, Benyi Cao
The Jigongshan Mountain Tunnel in Shenzhen, China was excavated under the Xiaping landfill using the drill-and-blast tunneling method. Existing literature has not yet proposed any approaches for evaluating the impact of tunneling blasting load on landfills. In this study, field measurements on vibration acceleration induced by blast were firstly conduct under the landfill. Then, 3D dynamic numerical
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Exploiting excavation-induced displacement for slope heterogeneity characterization and stability analysis Comput. Geotech. (IF 5.3) Pub Date : 2024-04-01 Jing-Sen Cai, Tian-Chyi Jim Yeh, E-Chuan Yan, Rui-Xuan Tang
Slope displacement data is valuable but underexplored in current slope stability analysis. This study combines a SimSLE-based displacement back analysis and the strength reduction technique to exploit excavation-induced displacement for slope heterogeneity characterization and stability analysis.
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An uncoupled approach for estimating seismic-induced pore water pressures in liquefiable sandy soils Comput. Geotech. (IF 5.3) Pub Date : 2024-04-01 Gabriele Boccieri, Domenico Gaudio, Riccardo Conti
Proper evaluation of seismic-induced excess pore water pressures in saturated sandy soils is still an open issue, which can be tackled with fully coupled to uncoupled approaches. The former are more accurate but computationally onerous, while the latter require seismic demand and pore pressure build-up to be computed in two successive steps, typically employing simple constitutive assumptions.
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Numerical investigation of phase relationship between kinematic and inertial loads of piles behind a quay wall in liquefiable ground Comput. Geotech. (IF 5.3) Pub Date : 2024-04-01 Chunhui Liu, Jianliao Weng, Lijun Deng, Yongzhi Wang, Qinghe Fang
The kinematic effect induced by soil lateral spreading and the inertial effect from the superstructure may result in pile failure in liquefaction-induced lateral spreading ground. Current seismic guidelines on the combination of kinematic and inertial loads on pile are different. To investigate the phase relationship between the kinematic and inertial loads and the timing of the peak values of these
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A feasible approach for engineering-scale 3D blasting numerical modelling incorporating explosive charges and layout design Comput. Geotech. (IF 5.3) Pub Date : 2024-04-01 Yi-Min Hao, Xin-Dong Wei, Qin Li, Gao-Feng Zhao
The complexity of blasting designs and the extensive computational cost pose significant challenges in accurate prediction using three-dimensional numerical methods. This paper proposes a feasible approach for engineering-scale blasting numerical modelling with the integration of charge structures and layout design in the four-dimensional lattice spring model (4D-LSM). The approach enables the 4D-LSM
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From sedimentation to consolidation of kaolinite: A molecular dynamic study Comput. Geotech. (IF 5.3) Pub Date : 2024-03-30 Ming Lu, Yuan-Yuan Zheng, Zhen-Yu Yin
The consolidation of clay is the main measure for reclamation project, which is related to the compressibility, permeability, and coupling effect of clay-water. However, the mechanism of consolidation of clay remains unclear. This study focuses on the microscopic consolidation property of kaolinite using Molecular Dynamics (MD) simulation method. The nano-scale consolidation model was established to
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Vibration mitigation using dual-open and infilled trenches in layered soil media: Field tests and numerical simulations Comput. Geotech. (IF 5.3) Pub Date : 2024-03-30 Nitish Jauhari, Amarnath Hegde, Pradipta Chakrabortty
Ground-borne vibrations are increasing at a rapid rate due to the rise in urban expansion and industrial activities. The current solution to mitigate the unwanted vibrations is limited to the use of single trenches that require unrealistic depths. This paper presents the possibilities of using dual open and infilled trenches to mitigate the vibrations generated due to continuous harmonic motions. Full-scale
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A simple gradation-state-dependent model for granular materials Comput. Geotech. (IF 5.3) Pub Date : 2024-03-30 Yaolan Tang, Chunshun Zhang, Congying Li, Jian Zhao
This paper proposes a gradation-state-dependent constitutive model to capture the granular materials' mechanical behaviours considering the granular crushing's influence. Firstly, a gradation evolution law is developed to reflect the change in grain size distribution (GSD) with the growth of stress levels, and then, based on the evolution law, the elastic compliance matrix is modified to reflect the
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Numerical study of multiple hydraulic fractures propagation in poroelastic media based on energy decomposition phase field methods Comput. Geotech. (IF 5.3) Pub Date : 2024-03-30 Zaiyong Wang, Weiguo Liang, Haojie Lian, Wenda Li
This paper proposes a novel phase-filed model for simulating hydraulic fracturing in poroelastic media under complex stress conditions. The main theoretical contribution lies in the fact that a generalized strain energy density decomposition is incorporated to hydraulic fracturing phase field model, which unifies hydrostatic-deviatoric and spectral decompositions and predicts material failure through
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Study on the influence of coarse aggregate distribution uniformity on the compaction characteristics of gap-graded gravels Comput. Geotech. (IF 5.3) Pub Date : 2024-03-29 Shunkai Liu, Jibiao Liao, Wei Hu, Zongtang Zhang, Mohammed Ashiru, Chuanfeng Fang, Yuanqiang Chen
There has yet to be a quantitatively characterised study that relates the degree of uniformity of aggregate distribution to the compaction of gap-graded gravels. The particle tracking technique was used to calibrate the vibrational compaction discrete element model, which was used to simulate the vibratory compaction of gap-graded aggregates at varying coarse aggregate contents (25 %, 50 %, and 75 %)
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Comparative evaluation of hydro-mechanical models in swelling of clay-sulfate rocks: Case study of staufen, Germany Comput. Geotech. (IF 5.3) Pub Date : 2024-03-29 Reza Taherdangkoo, Najib Mahfuzh Abdallah, Christoph Butscher
The swelling of clay-sulfate rocks presents a substantial challenge in geotechnical engineering, with the city of Staufen in Germany being a case study, where ground deformations were triggered by water flow into the Triassic Grabfeld Formation. The underlying mechanisms include clay swelling and chemical swelling from the transformation of anhydrite to gypsum, both leading to a volume increase. This
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A three-dimensional smoothed particle hydrodynamics analysis of multiple retrogressive landslides in sensitive soil Comput. Geotech. (IF 5.3) Pub Date : 2024-03-29 Ding Chen, Wenxiong Huang, Chao Liang
Numerical modelling and analysis of three-dimensional multiple retrogressive landslides of Saint-Jude landslide in sensitive clay is conducted. The investigations of the three-dimensional effects in determining the extent of landslides are concerned. To accurately simulate the extremely large deformation caused by progressive soil failure, a special form of SPH formulation known as finite particle
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Pre- and post-failure behaviour of a dike after rapid drawdown of river level based on material point method Comput. Geotech. (IF 5.3) Pub Date : 2024-03-29 Yanhao Zheng, Jinhui Li, Xianshuo Zheng, Ning Guo, Guanghua Yang
The rapid drawdown of river level is very detrimental to the stability of dikes. In this paper, the entire slope failure process of a real dike with sandy soil interlayer after rapid river drawdown is accurately reproduced using the material point method (MPM). The analysis of pre-failure behaviour, in combination with field test results, reveals the triggering mechanism of such dike slope failure
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Experimental data-centric prediction of penetration depth and holding capacity of dynamically installed anchors using machine learning Comput. Geotech. (IF 5.3) Pub Date : 2024-03-29 Yong Fu, Kailin Ding, Congcong Han
The visualization of experimental research phenomena and the reliability of experimental data enable their utilization in validating theoretical and numerical methods. However, the existing literature on dynamically installed anchors (DIAs) lacks cohesion, resulting in a reliance on onshore driven pile design theory, as well as empirical or semi-empirical calculation methods for DIA design. Therefore
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An explicit material point and finite volume sequentially coupled method for simulating large deformation problems in saturated soil Comput. Geotech. (IF 5.3) Pub Date : 2024-03-28 Yunyi Li, Jian-Min Zhang, Rui Wang
An explicit material point and finite volume sequentially coupled method (MPM-FVM) is developed using - form coupling formulations for the simulation of large deformations in saturated soil. In MPM-FVM, the momentum conservation equation is solved by MPM under the updated Lagrange framework, and the mass conservation equations are solved by FVM under the Euler framework. The numerical implementation
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Evaluation and improvement of Gay-Berne interaction potential to simulate 3D DLVO interaction of clay particles Comput. Geotech. (IF 5.3) Pub Date : 2024-03-28 Angela Casarella, Alessandro Tarantino, Vincent Richefeu, Alice di Donna
This paper first presents a set of DLVO-based energy-separation functions for a pair of finite uniformly charged square platelets of infinitesimal thickness in three elementary configurations: face-to-face, edge-to-edge, and edge-to-face. The novel dataset was generated by summing the electrostatic interaction energy computed numerically by solving the non-linear 3D Poisson-Boltzmann equation and the
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Tensor-based physics-encoded neural networks for modeling constitutive behavior of soil Comput. Geotech. (IF 5.3) Pub Date : 2024-03-28 Zhihui Wang, Roberto Cudmani, Andrés Alfonso Peña Olarte
Data-driven constitutive models are increasingly addressing non-elastic and three-dimensional scenarios. However, their robustness can be significantly impacted by the inadequate integration of physical information. Accordingly, this study introduces a tensor-based physics-encoded neural network to characterize the constitutive behavior of soil, exemplified by isotropic hypoplasticity with dependency
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CFD-DEM numerical investigation of the effects of water content and inclination angle on interactions between debris flows and slit dam Comput. Geotech. (IF 5.3) Pub Date : 2024-03-27 Yandong Bi, Yu Huang, Bei Zhang, Jian Pu
Debris flows, composed of sediment–water mixtures, can pose significant risks to downstream populations and infrastructure in mountainous regions. Slit dams have been demonstrated as being effective measures for decreasing the destructivity of debris flows. Reliable evaluations of the interactions between debris flows and slit dams are challenging if the complicated component characteristics of debris