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Elastic wave velocities during triaxial shearing influenced by particle morphology Soils Found. (IF 3.7) Pub Date : 2024-03-14 Yang Li, Masahide Otsubo, Reiko Kuwano
This contribution investigates the characteristics of elastic wave velocities ( and ) during triaxial shearing tests under dry and drained conditions. Samples of tested materials with different particle morphologies (i.e., particle shape and surface roughness) were prepared under three strategies, namely, similar initial void ratios (), relative densities (), and side tapping numbers (). Regarding
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Liquefaction characteristics of sand-gravel mixtures: Experimental observations and its assessment based on intergranular state concept Soils Found. (IF 3.7) Pub Date : 2024-03-05 Abilash Pokhrel, Gabriele Chiaro, Takashi Kiyota, Misko Cubrinovski
Case histories from at least 28 earthquakes worldwide have indicated that liquefaction can occur in gravelly soils (both in natural deposits and manmade reclamations), inducing large ground deformation and causing severe damage to civil infrastructures. However, the evaluation of the liquefaction potential and cyclic strain accumulation characteristics of gravelly soils remains a major challenge in
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Seepage analysis model based on field measurement data for estimation of posterior parameter distribution using merging particle filter Soils Found. (IF 3.7) Pub Date : 2024-02-29 Shinichi Ito, Kazuhiro Oda, Keigo Koizumi
Soil water conditions should be adequately evaluated because they influence the occurrence of surface failures. Digital twin systems, connecting field measurement data with numerical simulations, must be created to enable early warnings to be issued before a surface failure occurs. This study discusses the applicability of the merging particle filter (MPF) method for estimating the posterior distribution
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Robustness of remediation measures against liquefaction induced manhole uplift under mainshock-aftershock sequence Soils Found. (IF 3.7) Pub Date : 2024-02-27 Zhiyong Zhang, Siau Chen Chian
Earthquakes generally consist of one mainshock and subsequent aftershocks. Although effects of aftershocks following the mainshock on surface structures has been studied extensively, similar studies on underground structures are rarely reported in the literature. With the fast advances in underground space development, robustness of remediation measures against underground structures uplift induced
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The shape of sand particles: Assessments of three-dimensional form and angularity Soils Found. (IF 3.7) Pub Date : 2024-02-24 A.W. Bezuidenhout, M. Bodhania, L. Tiroyabone, C. Eddey, L.A. Torres-Cruz
Particle shape affects the mechanical behaviour of soil and is thus a parameter of interest in geotechnical engineering. Shape is commonly described by form, angularity and roughness. Form describes the overall aspect ratio, angularity the sharpness of the edges and corners, and roughness the small surface irregularities. This work explores the characterisation of form and angularity of sand particles
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Triaxial testing response of compacted iron ore tailings considering a broad spectrum of confining pressures Soils Found. (IF 3.7) Pub Date : 2024-02-16 João Paulo Sousa Silva, Ana Luisa Cezar Rissoli, Pedro Pazzoto Cacciari, António Joaquim Pereira Viana da Fonseca, Hugo Carlos Scheuermann Filho, Alexia Cindy Wagner, João Vítor de Azambuja Carvalho, Lucas Festugato, Nilo Cesar Consoli
The filtered tailings disposal (dry stacking) up to 300 m high is an alternative to overcome the drawbacks related to the slurry tailings storage in large impoundments as it is safer and demands smaller portions of the existing landform. Even so, the understanding of the denser and dewatered material response over a broad range of confining pressures is essential to safely design tall dry stacking
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A new p-y model for soil-pile interaction analyses in cohesionless soils under monotonic loading Soils Found. (IF 3.7) Pub Date : 2024-02-15 Ozan Alver, E. Ece Eseller-Bayat
The most widely used analysis method for the laterally loaded pile problem is the Winkler spring approach. Although researchers have proposed nonlinear formulations for the p-y curves, the contribution of the soil nonlinearity has not been thoroughly studied. The main drawback of the current approach is the use of a single stiffness in the p-y formulation. This study investigates the laterally loaded
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Effect of pile arrangement on long-term settlement and load distribution in piled raft foundation models supported by jacked-in piles in saturated clay Soils Found. (IF 3.7) Pub Date : 2024-02-12 Lua Thi Hoang, Xi Xiong, Tatsunori Matsumoto
When designing a piled raft foundation (PRF) on clay, it is essential to understand the time-dependent behaviors of the foundation. However, little attention has been paid to this issue. On the basis of physical model tests, this study presents the long-term behaviors of piled raft foundations with different pile arrangement schemes. In the experiments, three foundation models with the same square
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Microstructural insight into the hysteretic water retention behavior of intact Mile expansive clay Soils Found. (IF 3.7) Pub Date : 2024-02-08 Gao-feng Pan, Yi-xuan Zheng, Sheng-yang Yuan, Dan-xi Sun, Olivier Buzzi, Guan-lu Jiang, Xian-feng Liu
Water retention behavior of clayey soils usually exhibits a hysteretic phenomenon, which can be attributed to the ink-bottle effect, different contact angle during wetting and drying process, entrapped air etc. For expansive soils, along the wetting and drying path, significant microstructure change is usually observed. The effect of microstructure change on the water retention hysteretic phenomenon
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Acknowledgement of Reviewers for 2023 Soils Found. (IF 3.7) Pub Date : 2024-02-02
Abstract not available
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Unconditional convergence of theoretical solutions to -p formulation Soils Found. (IF 3.7) Pub Date : 2024-02-02 Tomohiro Toyoda, Toshihiro Noda
Dynamic soil-water coupling analyses, based on the - formulation, are inapplicable to highly permeable soils, causing numerical instability. In this study, it is demonstrated that theoretical solutions to the - formulation itself certainly exhibit unconditional convergence regardless of the permeability coefficient. This suggests that the instability is only numerical and can be observed in a temporally
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Strength reduction mechanism of cement-treated soil under seawater environment Soils Found. (IF 3.7) Pub Date : 2024-01-30 Hiroyuki Hara, Kenshi Ikeda, Norimasa Yoshimoto
Improving soft grounds with cement or lime is commonly used to increase their strength and deformation characteristics. However, the properties of cement/lime-treated soil deteriorate in seawater because magnesium salts accelerate calcium leaching. In this study, changes in the unconfined compressive strength of cement-treated soil samples with various water contents, amounts of added cement, and curing
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The effects of internal erosion on granular soils used in transport embankments Soils Found. (IF 3.7) Pub Date : 2024-01-23 I. Johnston, W. Murphy, J. Holden
The flooding of embankments used for rail and other infrastructure has the potential to cause lasting weakening of slopes via the movement of fine particles induced by seepage. In laboratory experiments, internal erosion was induced in granular soil samples, with properties consistent with those used to construct transportation embankments, to assess how particle migration through, and out of, samples
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Electroosmotic reinforcement mechanism and laboratory tests of pulsating direct current with a high energy efficiency ratio Soils Found. (IF 3.7) Pub Date : 2024-01-23 Xunli Zhang, Lingwei Zheng, Shangqi Ge, Xudong Zheng, Xinyu Xie
Based on the electroosmotic reinforcement mechanism of pulsating direct current (PDC) with a high energy efficiency ratio, the calculation method of PDC electroosmosis drainage rate was verified under different potential gradients using two forms of voltage loading, i.e., constant direct current (CDC) and PDC. The drainage weight and electric current were achieved by laboratory tests, and then the
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Centrifuge modeling of pile-supported embankment on soft soil base for highway widening Soils Found. (IF 3.7) Pub Date : 2024-01-04 Tianyi Chen, Ga Zhang
The pile-supported embankment has been widely adopted in highway widening projects. There is often significant differential settlement between the new and old embankments. Previous studies have not clarified the interaction mechanisms between different parts of the widening subgrade. In this research, a series of centrifuge model tests were carried out on the subgrades widened by pile-supported embankment
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Settlement prediction of shallow foundations for quality controls of sandy hydraulic fills Soils Found. (IF 3.7) Pub Date : 2023-12-29 V. Fioravante, D. Giretti, A. Masella, G. Vaciago
This paper describes a procedure for settlement prediction of shallow foundations on carbonate sands, but it is fully applicable and valid for siliceous sands. For practical purposes, the design of shallow foundations resting on medium dense and dense granular soils is typically governed by limiting settlement to tolerable values. Predicting foundation settlement is therefore important, but in standard
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Numerical investigation of the installation process and bearing capacity of circular helicoid piles in undrained clay Soils Found. (IF 3.7) Pub Date : 2023-12-29 Kunpeng Wang, Chunyi Cui, Peng Zhang, Noriyuki Yasufuku, Guangli Xu, Meng Wang
The circular helicoid pile (CH pile) is a special-shaped pile with outstanding axial bearing properties developed in the last ten years, its pile-soil interaction problem has nonplanar strain and is non-axisymmetric. The coupled Eulerian-Lagrangian (CEL) method was applied to simulate the entire process of installation, axial compression and pullout loading of the CH pile in undrained clay to assess
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Mixture design for eco-friendly hybrid clay treated with two stabilizers based on water absorption and retention of stabilizers Soils Found. (IF 3.7) Pub Date : 2023-12-26 Shafique Raihan Shovon, Alula Kassa, Ryo Sekine, Kimitoshi Hayano, Yoshitoshi Mochizuki
Major challenges are encountered when using high-water-content clays as construction materials owing to their low shear strength and high compressibility. Processes, such as sun drying and stabilization using chemical agents, can address the problems met with these clays during their conveyance and reuse. However, natural dehydration is a time-consuming process, and chemical stabilization can lead
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Vacuum consolidation effect on the hydromechanical properties of the unusual soft clays of the former Texcoco Lake Soils Found. (IF 3.7) Pub Date : 2023-12-23 Norma Patricia López-Acosta, Alejandra Liliana Espinosa-Santiago
The area of the former Texcoco Lake in Mexico is characterized by soft lacustrine clay strata with high water content and high compressibility. The construction of a new airport was planned in this area, which requires soil stabilization. One soil improvement option is the use of vacuum preloading systems that apply a vacuum to the soil through vertical drains. This study evaluates the improvement
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Prediction of ground vibration under combined seismic and high-speed train loads considering earthquake intensity and site category Soils Found. (IF 3.7) Pub Date : 2023-12-23 Wei Xie, Guangyun Gao, Jian Song, Yonggang Jia
Based on a two-and-half-dimensional finite element model (2.5D FEM), the layered ground vibration under combined seismic and high-speed train loads was investigated. On this basis, the effect of site category and earthquake intensity on ground vibration under the combined action of two dynamic loads was analyzed. Numerical examples indicated that ground vibration displacement due to combined loads
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Evaluation of the effect of constant and non-constant Poisson’s ratio on reinforcement load of reinforced soil walls Soils Found. (IF 3.7) Pub Date : 2023-12-21 Mauricio Ehrlich, Seyed Hamed Mirmoradi, Gustavo Fonseca Silva, Gabriel Nascimento
This study analytically and numerically investigates the impact of constant and non-constant Poisson’s ratio on the mobilized maximum load in the reinforcements, Tmax, of reinforced soil walls with vertical facing under working stress conditions. This assessment is carried out considering different controlling factors including reinforcement stiffness, wall height, backfill friction angle, and compaction-induced
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Test conditions influence on thermal conductivity and contact conductance of sand at transient state Soils Found. (IF 3.7) Pub Date : 2023-12-19 Kamar Aljundi, Carlos Pereira, Ana Vieira, João R. Maranha, José Lapa, Rafaela Cardoso
The proper assessment of soil thermal properties, such as thermal conductivity, assumes a particular relevance for the design of Ground Source Heat Pump systems, as it determines the heat transfer and the energy efficiency design. Multiple methods can be used for thermal conductivity estimation, however significant scatters in measurements are often reported when using different (or even the same)
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Critical application zone of the jet grouting piles in the vicinity of existing high-speed railway bridge in deep soft soils with medium sensibility Soils Found. (IF 3.7) Pub Date : 2023-12-18 Yao Shan, Jun Luo, Binglong Wang, Shunhua Zhou, Bo Zhang
Jet grouting piles were widely employed for ground reinforcement in building and infrastructure engineering due to the low cost and construction convenience. However, this foundation treatment method is not allowed to be used in high-speed railway involved constructions in China because of the concerning of the negative effect on the lateral displacement of the existing high-speed railway. To find
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Variability in jacking resistance of adjacent steel pipe piles under controlled pile installation Soils Found. (IF 3.7) Pub Date : 2023-12-13 Naoki Suzuki, Kohei Nagai
The pile bearing capacity varies even within the same site. This study aims to gain a better understanding of the effect of pile penetration techniques on the variability of bearing capacity. The study uses data from 83 jack-in test piles to explore the variations in penetration resistance at the pile head, base, and shaft. The semivariance increases with an increase of the horizontal distance, so
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Nonlinear consolidation of arbitrary layered soil with continuous drainage boundary: An approximate closed-form solution Soils Found. (IF 3.7) Pub Date : 2023-12-16 Zongqin Wang, Yunpeng Zhang, Mengfan Zong, Tao Wu, Wenbing Wu, Guoxiong Mei, Shengtao Zhou
Based on the double nonlinear consolidation constitutive associated with the compression and permeability coefficients, presented by Mesri and Rokhsar (1974), this paper derives an approximate closed-form solution for the one-dimensional nonlinear consolidation of the arbitrary layered soils incorporating the continuous drainage boundary condition. The approximate closed-form solution is obtained by
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Effect of water head on the permeability of foam-conditioned sands: Experimental and analytical investigation Soils Found. (IF 3.7) Pub Date : 2023-11-28 Shuying Wang, Zhiyao Feng, Tongming Qu, Shuo Huang, Xiangcou Zheng
The water permeability of conditioned soils is one of the most essential properties for Earth Pressure Balance (EPB) tunnelling in coarse-grained soils. Permeability tests are conducted to study the influence of water heads on the permeability of foam-conditioned sands. The initial permeability coefficient of foam-conditioned sands increases with the water head, while the stable permeability coefficient
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Insights into durability assessment for compacted soils treated with paper sludge ash-based stabilizers Soils Found. (IF 3.7) Pub Date : 2023-11-29 Navila Tabassum, Ryo Sekine, Kimitoshi Hayano, Binh Nguyen Phan, Hiromoto Yamauchi
To utilize industrial by-products in construction projects, soil stabilization using paper sludge ash-based stabilizers (PSASs) has recently been developed. PSASs can be manufactured by insolubilizing the heavy metals in original paper sludge (PS) ash, which is a waste product emitted from paper mills. This study assessed the durability of clays treated with PSASs in wet-dry or dry-wet environments
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Suffusion in densely compacted Satozuka pumice sand and its impact on static loading undrained shear strength and dilation behaviour Soils Found. (IF 3.7) Pub Date : 2023-11-23 Rupali Sarmah, Yoichi Watabe
Pumice sand of volcanic origin contains a high fraction of non-plastic fines (>40 % for Satozuka pumice sand in Sapporo, Japan). Suffusion in such soil can wash away a portion of the fine particles and alter the soil microstructure. The moisture content and degree of compaction can affect the suffusion characteristics of soil deposits, however their effect has not yet been evaluated. Future construction
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Axial capacity ageing trends of large diameter tubular piles driven in sand Soils Found. (IF 3.7) Pub Date : 2023-11-20 D. Cathie, R. Jardine, R. Silvano, S. Kontoe, F. Schroeder
The paper examines dynamic pile test data from 25 high-quality offshore cases, where end-of-initial driving (EoID) and beginning-of-restrike (BoR) instrumented dynamic monitoring was undertaken on tubular piles driven in sands at well-characterised sites after known setup periods. The static resistances derived from signal matching by two independent specialist teams using different software are compared
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Behavior of multi-layer permeable reactive barriers for groundwater remediation Soils Found. (IF 3.7) Pub Date : 2023-11-20 Stefania Bilardi, Silvia Simonetti, Paolo Salvatore Calabrò, Nicola Moraci
This paper aims to evaluate the efficiency of a multilayer configuration of a permeable reactive barrier (PRB) made up of granular mixtures of zero valent iron (ZVI) and lapillus. The latter is a volcanic material used to disperse ZVI particles. A high dispersion of ZVI improves the long-term hydraulic conductivity but can significantly reduce reactivity due to the lower amount of ZVI. In this research
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Constitutive modeling and analysis of geomaterials Soils Found. (IF 3.7) Pub Date : 2023-11-08 Fusao Oka
This is a review of the papers written by the author with co-researchers, which have been published in Soils & Foundations and related publications. The contents of the papers are related to experimental and theoretical aspects of geomechanics, namely, the constitutive modeling of cohesive and sandy soils, the governing equations of three-phase materials, and analyses of the behavior of geomaterials
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Response of soil–water characteristics to pore structure of granite residual soils Soils Found. (IF 3.7) Pub Date : 2023-11-09 Qixin Liu, Liansheng Tang, Yang Chen
Granite residual soil is a special regional soil with special mineral composition and pore structure characteristics, which is easy to induce serious geological disasters or engineering problems, so it is particularly important to study its mechanical properties of unsaturated soil and its control mechanism. However, the effects of dry density and initial water content on soil–water characteristic
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Stability of tunnel face in unsaturated sand possessing apparent cohesion: A micro-macro analytical approach Soils Found. (IF 3.7) Pub Date : 2023-11-06 Junzuo He, Shaoming Liao, Mengbo Liu, Iwanami Motoi, Junhua Xiao
Although the stability of tunnel face in the dry and saturated sandy ground is widely studied, the unsaturated sandy ground which possesses apparent cohesion is more common in engineering. For remedying this deficiency, the theoretical association between apparent cohesion and the saturation degree is firstly established in microscopic prospective. Then, the formation mechanism of the self-stabilized
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The physical and mechanical properties of recycled aggregates strengthened by enzyme induced carbonate precipitation Soils Found. (IF 3.7) Pub Date : 2023-11-01 Yuru Chen, Angran Tian, Xinyu Luo, Yu Zhou, Qiang Tang, Satoru Kawasaki
Enzyme induced carbonate precipitation (EICP) which applied to improve the quality of recycled aggregates (RA) is a novel technology in the field of civil engineering. The urease was extracted from soybean, and the factors including soybean powder concentration, temperature and pH value on urease activity were investigated. Then the EICP reaction kinetics was carried out to obtain the most suitable
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Resistance responses and design recommendations for driven piles in coarse-grained soil-based intermediate geomaterials Soils Found. (IF 3.7) Pub Date : 2023-10-30 Nafis Bin Masud, Kam W. Ng, Shaun S. Wulff
Piles driven in Intermediate GeoMaterials (IGM) pose multiple design and construction challenges because of the high uncertainty in IGM properties, lacking knowledge pertaining to pile responses in IGM, and absence of classification, static analysis (SA) methods, and design recommendations. A classification criterion is established for coarse grained soil based intermediate geomaterials (CG-IGM) using
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An analytical solution for the consolidation of a composite foundation reinforced by vertical drains and high replacement ratio gravel piles by considering the radial flow within gravel piles Soils Found. (IF 3.7) Pub Date : 2023-10-24 Chuanxun Li, Xiangzong Lu, Peng Wang
To make up for the shortcomings of single-pile composite foundations, combined composite foundations are increasingly used in engineering. However, studies for the consolidation theory of composite foundations reinforced by high replacement ratio gravel piles and vertical drains, in which the radial flow within gravel piles is considered, have been rarely reported in the literature. The establishment
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Influence of different axis-translation techniques using ceramic disks/microporous membrane filters on mechanical/hydraulic behavior of unsaturated soil Soils Found. (IF 3.7) Pub Date : 2023-10-24 Junnan Ma, Xi Xiong, Feng Zhang
Element tests, such as water retention tests and triaxial tests, are efficient and widely used methods for investigating the elementary hydro-mechanical behavior of unsaturated soil. In recent research, discrepancies observed in unsaturated test results using axis-translation techniques (ATTs) with ceramic disks and microporous membrane filters (MM filters) have indicated that misunderstandings might
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Quantification of the contribution ratio of relevant input parameters on DEM-based granular flow simulations Soils Found. (IF 3.7) Pub Date : 2023-10-21 Junsen Xiao, Kenta Tozato, Shuji Moriguchi, Yu Otake, Kenjiro Terada
Granular flow is affected by multiple parameters, which makes its study challenging. The discrete element method (DEM) is widely employed to simulate granular flow in consideration of particle motion, particularly when the effects of related parameters and particle shape on flow characteristics are being studied. In this study, different combinations of four input parameters (spring coefficient, friction
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Improved support point selection on adaptive kriging metamodels for reliability analysis of soil slopes Soils Found. (IF 3.7) Pub Date : 2023-10-21 C. Arévalo, R.O. Ruiz, Y. Alberto
The paper presents an iterative approach based on stochastic simulations and adaptive Kriging metamodels to perform reliability and safety assessments of soil slopes. Two new rules for adaptively selecting support points are proposed, considering an entropy learning function and the closeness to the failure domain defined by a limit state function. In addition, a stopping criterion is proposed based
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Application of tree-based methods in predicting the surface settlement arising from the tunnel excavation with large mix-shield Soils Found. (IF 3.7) Pub Date : 2023-10-12 Chongwei Huang, Haohe Du, Lin Li, Jing Ni, Yu Sun
Surface settlement due to tunnel excavation is affected by several factors. However, no explicit mapping correlation exists between surface settlement and the main influencing factors. In this study, three tree-based methodologies, including classification and regression tree (CART), random forest (RF), and gradient boosting decision tree (GBRT), were implemented to predict the tunneling-induced surface
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Primary and secondary consolidation characteristics of a high plasticity overconsolidated clay in compression and swelling Soils Found. (IF 3.7) Pub Date : 2023-09-21 Emil Mejlhede Kinslev, Ole Hededal, Irene Rocchi, Varvara Zania
For a reliable prediction of the time-development of soil deformations, a detailed characterization of both primary and secondary deformations is required. Nevertheless, in the current engineering practice the estimation of the primary and secondary deformations relies on the assumption of a constant coefficient of consolidation and a constant creep index respectively. However, high plasticity overconsolidated
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Effect of the particle’s shape on the dynamic shear modulus and compressibility of diatomaceous soils Soils Found. (IF 3.7) Pub Date : 2023-09-14 Laura Ibagón, Bernardo Caicedo, Juan P. Villacreses, Fabricio Yepez
Diatomites are unicellular algae fossils that can be found worldwide. This paper studies the diatom's shape effect on diatomaceous soil mixtures' dynamic and compressibility properties. Physical characteristics of six diatomite samples with variable shapes and taxonomies are presented. Among these six samples, three diatomites of similar grain size distribution were mixed with kaolin, and the mechanical
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Excavation analysis of large-scale slope considering effects of folded structure and in-situ stress Soils Found. (IF 3.7) Pub Date : 2023-09-09 Kaixuan YUAN, Yuusuke MIYAZAKI, Wataru KUNIMATSU, Kohei MIKI, Tomihiko OHISHI, Kiyoshi KISHIDA
A cut slope in Rajamandala, Indonesia exhibited unexpected large-scale deformation during the excavation process which was revealed by the clinometers attached to the preventive piles. A geological survey indicated that the mudstone layer composing the slope had been folded by tectonic movement and was highly weathered and eroded at the surface. The above internal factors could have resulted in the
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Effects of stabilizers on CO2 fixation capacity in neutralization of alkali construction sludge Soils Found. (IF 3.7) Pub Date : 2023-08-11 Su Myat Mon, Aya Sakaguchi, Shovon Raihan, Nguyen Duc Trung, Kimitoshi Hayano
Construction sludge, generated from tunneling and piling, is typically in a liquid state. It can be improved via physical treatments, such as dehydration, and/or chemical treatments, using stabilizers, in order to to be recycled as construction material. To adjust the strength of sludge, chemical treatments are often preferred. However, chemical treatments frequently result in alkali leaching. Methods
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Experimental investigation into effects of lignin on sandy loess Soils Found. (IF 3.7) Pub Date : 2023-08-11 Gaochao Lin, Wei Liu, Jixiang Zhao, Pengchao Fu
Promoted by the international Helin Airplane project where sandy loess is widely distributed, this study investigates the feasibility of improving the mechanical properties of sandy loess by using lignin, an environmentally friendly material. Considering the climatic conditions in the distribution area of sandy loess, such as strong evaporation and large diurnal temperature difference, extensive experiments
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Energy-based insight into characterization of shakedown behavior of fully weathered red mudstone Soils Found. (IF 3.7) Pub Date : 2023-08-10 Kang Chen, Shengyang Yuan, Shenxin Pan, Jie Ma, Xianfeng Liu
Weathered Red mudstone is widely distributed in Sichuan basin. The compacted weathered red mudstone has been used as subgrade fill materials of high-speed railway in southwestern of China. Dynamic responses of such materials under cyclic loading are critical to long-term stability of subgrade. Shakedown concept is widely employed in characterizing the permanent deformation behavior of soils. According
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Shaking table test on underwater slope failure induced by liquefaction Soils Found. (IF 3.7) Pub Date : 2023-08-02 Xiaoqing Feng, Bin Ye, Jie He, Husheng Miao, Chuangji Lin
Sand liquefaction is a process in which the excess pore water pressure of saturated sand soils increases and the effective stress of saturated sand decreases under the action of vibration, resulting in the transition of sand soils from the solid state to the liquid state. In this paper, an underwater sand slope model containing the upper sand slope and the bottom non-liquefied clay layer was designed
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Dynamic behavior of liquefiable ground reinforced by in-situ cement-mixing lattice wall Soils Found. (IF 3.7) Pub Date : 2023-07-28 Kenji Watanabe, Tengfei Wang, Masahiro Ishikawa, Masatoshi Iijima, Shingo Mihira
In-situ cement-mixing lattice-shaped ground improvement (lattice wall) is one of the effective countermeasures for liquefiable grounds. However, its high cost hinders its wide applicability. This is mainly due to the conventional concept of seismic designs which do not allow any liquefaction of the ground against earthquakes. The recent seismic design code was revised to comply with the concept of
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A quantitative analysis procedure for solving safety factor of tunnel preliminary support considering the equivalence between Hoek–Brown and Mohr–Coulomb criteria Soils Found. (IF 3.7) Pub Date : 2023-07-20
There is a development trend from qualitative towards quantitative analysis for tunnel stability. The widely accepted convergence-confinement method (CCM) provides a quantitative framework for tunnel stability analysis, while the conventional CCM based on closed-form functions is essentially an ideal model without considering the tunnel section shape and rock weight in plastic zone. Herein, based on
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Assessment of ground-anchored slope stability based on variation in residual tensile forces Soils Found. (IF 3.7) Pub Date : 2023-07-17
The current maintenance process for ground-anchored slopes in Japan involves conducting lift-off tests to measure the residual tensile forces acting on the ground anchors of the slopes of interest. On highway slopes, at least 5% of the total number of anchors on a particular slope is measured once every five years. If a sufficient number of anchors is found to be under excessive tensile forces, additional
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Correlation between one-dimensional consolidation coefficients and different basalt fiber lengths and RHA-cement contents in fiber-reinforced stabilized expansive soils Soils Found. (IF 3.7) Pub Date : 2023-07-16
Recently, environmentally friendly soil reinforcement and stabilization techniques, used to reconstitute weak expansive soils, are on the rise, calling for an in-depth analysis of the consolidation projections on the engineering structures built on them. This study investigated one-dimensional consolidation coefficients by conducting a series of oedometer tests on expansive soils reinforced with basalt
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Evaluation of liquefaction strength of Japanese natural sandy soil using triaxial and simple shear tests Soils Found. (IF 3.7) Pub Date : 2023-07-16
The aim of this note is to reexamine the stress and strain conditions of cyclic triaxial and cyclic simple shear tests for evaluating the liquefaction strength of natural sandy soil. The conventional method of determining the liquefaction strength relies on the shear stress components. However, the use of stress invariants eliminates the need to specify the stress components, thereby making it a more
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Water and soil particle movement in unsaturated bentonite with constrained and free swelling boundaries Soils Found. (IF 3.7) Pub Date : 2023-07-12
Bentonite is considered a barrier material in the geological disposal of high-level radioactive waste. Depending on the construction method, it is necessary to know what the behavior of the bentonite barrier will be in the wetting process during the absorption of underground water under different boundary conditions. In this study, water and soil particle movement during the wetting process of a compacted
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Numerical investigation into the composite behaviour of over-deformed segmental tunnel linings strengthened by bonding steel plates Soils Found. (IF 3.7) Pub Date : 2023-07-11
Bonding steel plate has been used as a strengthening approach to repair disrupted segmental lining of operational tunnels. This paper introduces numerical investigation into the composite behaviour of the initially deformed segmental tunnel linings strengthened by bonding steel plates using finite element modelling. Cohesive zone modelling was used to simulate the interface bonding behaviour between
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Effect of particle size and particle size distribution on the post-liquefaction strength of granular soils Soils Found. (IF 3.7) Pub Date : 2023-07-06 Mathan V. Manmatharajan, Edouardine-Pascale Ingabire, Alex Sy, Mason Ghafghazi
In practice, post-liquefaction strength is largely determined from case histories, but the case history database is limited and there are gaps in the information available in each case. As a result, laboratory tests have continued to play a key role in determining how various factors influence post-liquefaction strength. This paper presents an investigation into how factors such as particle size, particle
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Cavity reverse expansion considering elastoplastic unloading and application in cast-in-situ bored piles Soils Found. (IF 3.7) Pub Date : 2023-07-01 Chunfeng Zhao, Jiaqi Zhang, Cheng Zhao, Yue Wu, Youbao Wang
The construction process of a cast-in-situ bored pile is too complicated to be described by the cavity expansion theory with a single process. An exact unified semi-analytical solution for both cylindrical and spherical cavities reverse expansion after unloading in drained soil is developed. The non-associated Mohr-Coulomb model and definition of logarithmic strain are adopted in the reverse plastic
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Geotechnical properties of soft clays along Yangon River – Characteristics of soft clays in Thilawa Port area Soils Found. (IF 3.7) Pub Date : 2023-06-29 Yoshimitsu Yamada, Takashi Tsuchida, Nyan Myint Kyaw, Tatsuru Aoyama, Toshiya Akasaki, Moe Myint Su Hlaing, Ryota Hashimoto
The Thilawa Port Development Project is the first large-scale development project to be carried out in the area of sedimented soft clays along the Yangon River in Myanmar. As there is little information about the soft clays sedimented along this river, the mechanical properties of the soft clays in the Thilawa Port area were summarized and compared with the properties of clays in other countries from
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Frequency- and intensity-dependent impedance functions of laterally loaded pile groups in cohesionless soil Soils Found. (IF 3.7) Pub Date : 2023-06-26 Naba Raj Shrestha, Masato Saitoh, Chandra Shekhar Goit, Alok Kumer Saha, Ryoya Yokota
The frequency-dependent horizontal impedance functions of a model floating 2 × 2 pile group, embedded in cohesionless sand under a 1g condition, were investigated experimentally. The tests were conducted using large amplitude loads inducing soil yielding. The soil-pile system was housed in a laminar shear box fastened to the top of a unidirectional shaking table. Quasi-static and dynamic loads were
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Novel method for evaluating water absorption and retention of waste-based stabilizers using suction filtration to predict treatment effects on soft clay soils Soils Found. (IF 3.7) Pub Date : 2023-06-24 Alula Kassa, Shovon Raihan, Kimitoshi Hayano, Binh Nguyen Phan, Hiromoto Yamauchi, Yoshitoshi Mochizuki
In this study, a novel testing method was developed to evaluate the water absorption and retention of waste-based stabilizers using suction filtration. Suction filtration was seen to remove most of the unabsorbed and unretained water from the waste-based stabilizer without losing any waste-based stabilizer particles. Therefore, oven-drying of the wet stabilizer, which can deteriorate the stabilizer