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Bases and Foundations of Moscow Citadels: Reconstruction and New Construction Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 V. A. Il’ichev, N. S. Nikiforova
Examples are given of the reconstruction of the bases and foundations of buildings and structures of the Moscow Kremlin and the Novodevichy Convent, as well as the construction of the Patriarch Germogen Monument in the Aleksandrov Gardens. The scientific support work is described, including geotechnical modeling, development of protective measures, and monitoring programs for geotechnical and heat-humidity
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Calculation of the Bearing Capacity of a Two-Layer Soil Base Under an Inclined Load Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 M. V. Shohirev, A. M. Karaulov, K. V. Korolev
An approximate solution to the problem of the bearing capacity of a two-layer soil base under an inclined load is given. To assess the bearing capacity, the coefficient of influence of the underlying layer is introduced. The logarithmic spiral method is used to determine this coefficient.
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Effects of Anti-Sliding Piles on the Deformation Mechanisms of a Bridge Foundation in an Expansive Soil Slope Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14
Expansive soil is mainly composed of hydrophilic minerals, and shows significant deformation characteristics after watering, which often causes great harm to engineering construction. In this study, numerical analyses were conducted to investigate the effects of anti-sliding piles on the deformation mechanisms of a bridge foundation in an expansive soil slope. It was found that deformation of the bridge
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A Model Test and the Ultimate Capacity Analysis of Multi-Underreamed Anchors in Silty Clay Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14
Multi-underreamed anchors (MUAs) are widely used in areas with soft soils owing to their high ultimate capacity. To explore the bearing mechanism of MUAs in soft soil, this paper performs a model test of MUAs in silty clay and draws the following conclusions. With an increase in the underream number of MUAs, the ultimate capacity of the anchors significantly increases. The strength of MUAs develops
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Strength Properties of Sedimentary Tailings with Different Contents of Fine Particles and the Seepage Damage Risk of Tailings Dams Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 Z. Gan, X. Yang, C. Du, D. Gan
Breaches of tailings dams have had catastrophic consequences in the mining industry worldwide. Therefore, the characteristics of tailings and their effects on the stability of tailings dams need to be investigated. In this paper, the mechanical properties of uniform tailings and smaller sedimentary tailings are analyzed in laboratory testing. The critical hydraulic gradient of tailings is explored
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Dynamic Response and Damage of Subway Tunnels Subjected to Explosion-Induced Loads Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 W. Ye, Z. Zhou, Y. Bai, Y. Wu, Y. Chen
The instantaneous strong load generated by an explosion outside of a subway tunnel can destabilize and damage the tunnel’s lining, and thus endanger human safety and property. To avoid this risk, it is necessary to investigate the dynamic response and damage of subway tunnels under explosion-induced loads. This study used the ANSYS/LS-DYNA software to establish the finite element model of a tunnel
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Laboratory Investigation of Lateral Swelling Pressure of Nanning Grey-White Expansive Soil Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 B. Tan, Z. A. Pan, L. Xu, J. Wang
In this research, the swelling pressure tests under different conditions were carried out on the Nanning grey-white expansive soil. The effects of dry density, initial moisture content and external load on the swelling pressure were investigated. The test results indicate that both lateral swelling pressures are essentially the same, but the vertical swelling pressure is higher than the lateral swelling
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Effects of Chemical Solutions and Flexible Electric Geotextiles on Electroosmotic Consolidation of River Silt Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 X. Zhang, S. Ge, L. Zheng, X. Xie
Compared with conventional soft clay ground treatment methods, electroosmosis has many advantages, such as a fast drainage rate and convenient equipment installation. However, its practical applications encounter restrictive factors, such as severe electrode corrosion and high energy consumption. As a flexible electric geotextile, carbon fiber cloth has good electrical conductivity and durability and
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Treatment of Expansive Soils with Slag: A Review Study Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 Mustafa Al-Saedi, Ayad Salih Sabbar
Expansive soil, also called swelling soil can cause severe damage to buildings and foundations due to the high swell-shrink behavior corresponding to moisture content changes. Slag, which is defined as the by-product of the iron and steel-making process, has been widely used as a stabilizer agent for developing clay soil mechanical characteristics. This review paper highlighted the findings of previous
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Numerical Modeling on Fluid-Solid Coupled Erosion in Sandy Gravel Soils Containing a Suspended Cut-Off Wall Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 S. Wang, Y. Tang, Q. Zhong, Y. Wang
A cut-off wall is the simplest and most effective preventive measure to mitigate the internal erosion of a dike foundation. However, flow directions around a cut-off wall vary and dike foundations are composed of various soil particles. Thus, to investigate the effects of flow direction and soil composition on internal erosion in a cut-off wall structure, we used a coupled distinct element method with
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Determination of Parameters of Soil Constitutive Models Based on Field Test Data Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 G. A. Iovlev, A. G. Protosenya, N. E. Petrov
Laboratory soil testing is the main method used to set the parameters of nonlinear constitutive models. However, the sample quality may be too poor to reflect the mechanical behavior of the real soil massif correctly. Additional calibration of the model input parameters based on field test data leads to a more accurate approximation of soil behavior. In this study, methods for automated calibration
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The Impact of a Heat-Insulating Pad on the Temperature Regime of the Frozen Base of a Low-Rise Residential Building Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14 K. S. Ivanov
The building technology on permafrost foundations using a heat-insulating pad made of granulated foam-glass ceramic is considered. The influence of the pad on the temperature regime of the frozen base of a dome-type residential building was studied using computer modeling. The design parameters of the insulating pad were established to ensure the thermal stabilization of the frozen base for 30 years
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Experimental Study on Mechanical Behavior of Remolded Cement Soil Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2024-02-14
As a common soil-improvement method, cement-stabilized soil is widely utilized in ground treatment and resource utilization of in-situ muds. The unconfined compressive strength (UCS) and strength recovery of a remolded cement soil were studied. The test results show that the UCS values of remolded cement soil are significantly lower than those of the corresponding undamaged cement-stabilized soil.
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Calculation of Bridge-Support Pile Foundations Taking Karst Deformations Into Account in the Base Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 N. Z. Gotman, A. G. Evdokimov
A numerical method is developed for calculating a pile foundation of bridge support with karst deformations forming in the base, taking into account the formation of ‘negative’ friction on the lateral surface of the piles. The bearing capacity, settlement, and stiffness coefficients of the piles are obtained as functions of the foundation geometry, pile load, settlement prior to karst deformation,
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Hydraulic Fracture Propagation in Rock Mass with XFEM Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 L.-Y. Shi, Y.-K. Shi, Y.-Y. Song
Modeling hydraulic fracture propagation in rock mass within the extended finite element method (XFEM) is presented in this paper. The XFEM framework is integrated by fully coupling the model with fluid flow and rock deformation in the proposed algorithm. The fluid within the fracture is considered as an incompressible Newtonian fluid. In the proposed formulation, the first-order generalized shape functions
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A Structured Cam-Clay Model with a Damage Variable Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 S. Feng, H. Lei
A plastic constitutive model, namely a structured Cam-clay model with a damage variable, is here established based on the modified Cam-clay model. The resultant compression curve of undisturbed soil is simplified to a polyline based on the theoretical framework of the critical state model, and a yield surface that considers structural parameters is adopted to express the progressive damage of the soil
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Simulation of Water Flow in Soils Associated with Earth Electrodes Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 I. F. Rezende Costa, M. C. Barbosa, A. O. Costa Neto
The electrodes of grounding systems transmit strong electric currents through the soil. The injection of the electric current and establishment of an electric field in the soil mass cause an electro-osmotic flow in parallel with a hydraulic flow, triggered by the electricity and moisture respectively. As a result, the soil can become unsaturated around the electrode, which is an unwanted effect, as
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A Multi-Scale Drucker–Prager Strength Criterion Based on Microscopic Physical Soil Analysis Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 D.-L. Feng, X.-L. Xiao, S.-H. Liang
The coupling of interactions between liquid, gas and particles in soil at different scales leads to specific particulate and structural soil characteristics. In this study, a soil cell element model was used to establish a multiscale Drucker–Prager strength criterion with respect to the microscopic physical details of soil. A series of soil cell element samples were prepared for consolidated and undrained
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Critical Hydraulic Gradient of Piping Erosion Under Free Flow and Seepage Flow Coupling Model Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-06 S. Zhang, F. Ye, Y. Liu, W.-X. Fu, H.-Y. Liao
This paper proposes a coupling model for evaluating the occurrence of piping erosion under free flow and seepage flow. The model employs the Navier–Stokes equation to describe free water flow in a pore channel and the Brinkman-extended Darcy equation to describe seepage flow in soft soils. The expression of the critical hydraulic gradient of piping erosion was derived based on the force limit equilibrium
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Experimental Investigations on the Evolution of Undrained Mechanical Characteristics of Cohesionless Soils Subjected to Internal Erosion Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 L. Chen, S.-F. Yan, J.-J. He, Y. Wan
Internal erosion plays a significant role in the failure of earth structures. In this paper, the fine particle elimination method is used, and a series of triaxial consolidated undrained shear tests is conducted to investigate the evolution of undrained mechanical characteristics of soils due to internal erosion. The result indicates that the soil specimen with a larger loss rate of fine particles
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Analysis of the Interaction Between the Upper and Lower Piles in a Self-Anchored Test Pile Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 H. Ma, P. Zhou, W. Yao
To quantitatively study the interaction relationships between upper pile sections and lower pile sections under the test condition of self-anchored loading, indoor model tests were conducted under three test conditions. The test conditions comprise self-anchored loading, single upper loading, and single lower loading in silty soils. By comparing the load-displacement curves, axial load transfer curves
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Temperature Mode of the Frozen Base of a Low-Rise Residential Building on a Ventilated Thermal-Insulation Pad Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 A. A. Plotnikov
The article considers the temperature mode of the foundation of a building constructed on frozen soils according to the first principle without a ventilated underground using deep cooling with seasonal cooling devices (SCD) located in the centre of the building in a channel cooled by outside air. The results of numerical calculations were compared depending on the SCD arrangement methods: along the
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Application of Artificial Foundations in Earthquake-Resistant Construction in Turkmenistan Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 I. B. Il’yasov, A. M. Uzdin
The features and applications of earthquake-resistant construction on soft soils using an artificial foundation in the form of a sand-gravel pad and drilling-injection piles (jet-1) in Turkmenistan are described. The design foundation models used in justifying the effectiveness of compacted soil pads are presented; in particular, finite element models with a damping boundary. Examples of the dynamic
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Geotechnical Monitoring in the Urban Construction Environment Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 A. B. Ponomaryov, A. V. Zakharov, D. A. Tatyannikov, E. A. Shalamova
The article deals with the issues of an integrated approach to the implementation of geotechnical monitoring in complex engineering and geological conditions, taking into account construction in urban areas. In the example of a particular case of construction, it is shown that an important element of integrated geotechnical monitoring is the mandatory implementation of an engineering–geological forecast
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Instability Prediction Model of the Shield Tunnel Face Based on the Normal Cloud-PSM Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 Junwei Zhang, Congzhou Gao, Xinmiao Huang
Considering the characteristics of fuzziness and randomness of shield tunnel face instability, normal cloud theory is introduced to establish an instability prediction model of the shield tunnel face based on the normal cloud-PSM (Product Scale Method). Geological, environmental, and tunnel influence factors are selected to set up a comprehensive evaluation index system. A three-dimensional numerical
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Remote Boundary for Numerical Simulations of Soil Slope Response to Earthquakes Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-12-04 J. W. Zhang, T. Y. Wang, H. G. Wu, Y. Yuan, A. H. Zhou
Accuracy of numerical simulations of seismic response of soil slopes is influenced by the choice of boundary conditions. We used a finite element model, field records of ground motion, and two sets of generalized slope models to examine slope dynamics and identify optimal dimensions for the leading and trailing edges of slope models. To avoid superposition of seismic waves reflected by model boundaries
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Experience of Low Strain Impact Testing of Piled Raft Foundation at the Construction Stage Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-31 A. A. Churkin
The use of a set of low strain impact testing techniques is shown on the example of the results of testing a piled raft foundation of an object under construction. The data of various techniques and direct research methods in combination with a priori information are acquired and analysed. The possibility of increasing the information value and reliability of conclusions about the structure state based
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Analysis of Causes and Geomechanical Schematization of Catastrophic Karst Subsidence Development Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-23 V. I. Sheinin, A. V. Anikeev, A. D. Kochev, O. A. Korol
The present paper considers the conditions for the development of a large-scale karst subsidence in Moscow, which was induced, according to the specialists of Sergeev Institute of Environmental Geoscience RAS (IEG RAS), by a technogenic decrease in the groundwater level. According to the analysis of data on the structure of the soil stratum and karst rock massif, a mechanism responsible for the formation
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Microscopic Mechanism of Coarse-Grained Soil Under Triaxial Test Based on PFC-FLAC Coupling Method Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 X. Zhang, K. Luo, T. Wang, M. Jiang, J. Feng, G. Mei
This study investigated the microscopic mechanism of coarse-grained soil under triaxial loading using the Particle Flow Code (PFC) – Fast Lagrangian Analysis of Continua (FLAC) coupling method. A numerical model considering the influence of flexible membrane deformation under triaxial loading was established according to the gradation of the material. Then, the validity and reliability of the numerical
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Stability Charts for Fill Slopes Based on Finite Element Limit Analysis Methods Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 A. J. Li, K. Lim, B.-C. Benson Hsiung, W. C. Chen
Slope stability assessment is extremely important in geotechnical engineering, as it prevents slope failures and the loss of lives. This paper utilizes the finite element lower bound limit analysis method to investigate and develop a set of 3D stability charts for fill slopes where frictional fill materials are placed on undrained clay with increasing shear strength with depth. Based on the stability
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Experimental Study on Shear Strength Parameter Characteristics and Influencing Factors of Miscellaneous Fill Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 Y. Chen, H. F. Zhang, C. J. Xu, R. Z. Liu, Y. H. Xue
To comprehensively consider the mechanical properties of miscellaneous fill, this study conducted triaxial experiments to investigate the strength characteristics of miscellaneous fill samples with different stone content, stone size, and dry density. The results reveal that, as the rock content increases, the cohesion gradually decreases and the friction angle gradually increases. As the rock size
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Sensitivity Analysis of Stability Factors of Filling Slopes Strengthened by Frame Anchor Plates Based on Orthogonal Experimental Design Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 A. P. Huang, S. H. Ye
The frame anchor plate is a new retaining structure for reinforcing a fill slope. Due to the lack of theoretical research, engineers cannot accurately evaluate the retaining structure’s effect on the stability of slopes under design and construction. This paper used the orthogonal experimental design method to analyze the sensitivity of each parameter to evaluate the influence of each parameter on
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Mathematical Model of the Temperature Control at the Base of a Building with a Slab Foundation on a Compacted Seasonally Thawing Layer Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-18 N. P. Semenova, A. V. Malyshev, A. M. Timoveev, K. N. Bolshev, A. A. Stepanov
The results of the development and implementation of a mathematical model for assessing the thermal influence of a building with a slab foundation on a compacted seasonally thawing (active) layer of permafrost with a system of air thermosiphons are presented. The data obtained show that the proposed solution makes it possible to ensure the formation of stable frozen conditions and the preservation
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Determination of the Stiffness Coefficients of a Foundation Composed of Collapsible Soils Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-18 V. V. Yarkin, D. Yu. Chunyuk, N. G. Lobacheva, A. V. Kukhar
An analysis of the normative documents regulating the determination of subsidence deformations is carried out. A simplification of the calculation scheme is proposed, with the developed proposals allowing separate subsidence deformations to be separated from shear deformations. An algorithm for calculating subsidence deformations is proposed, which takes into account various factors that influence
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Experimental and Artificial Neural Network Analysis of Geocell Reinforcement on Deformation and Vertical Stress Distribution of Quarry Waste Base Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-18 I. R. Sheikh, M. Y. Shah
The fines produced while crushing limestone aggregates can be used as a base course material for highway construction. This study presents the effect of geocell in reinforcing quarry waste base. The parameters investigated in this study included geocell height and the thickness of the base course. Vertical stress distribution and surface deformation were also investigated. The experimental results
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Numerical Studies of Thawing in Sloped Permafrost Soils Beneath a Building with a Mound Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-18 T. A. Kornilov, T. A. Nazarov, E. A. Kononova
Predictive modeling of temperature regimes in permafrost soils under building foundations was conducted, with regard to the floor insulation thickness and slope of the embankment. Furthermore, a joint temperature calculation of enclosing structures and foundation soils in a non-stationary setting was performed. Predicted soil temperature values under a building serve as inputs for assessing slope stability
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Dynamic Stability of Sandy-Soil Mass with Depth-Dependent Liquefaction Potential Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 A. Z. Ter-Martirosyan, E. S. Sobolev, G. O. Angelo, A. N. Shebunyaev
A method of predicting the stress-strain state of soil foundations under a dynamic response based on a liquefaction potential is analyzed. Laboratory studies of sandy water-saturated soils under the conditions of dynamic triaxial compression were performed. It is demonstrated that the use of an ‘average’ liquefaction potential for a layer regardless of its thickness effects an unreasonably optimistic
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Stability Analysis of Multistage Loess Slope Under Earthquake Action Based on the Pseudo-Static Method Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-10-19 S. H. Ye, R. H. Zhang
The aim of this study is to resolve outstanding problems in slope stability analysis including high calculation cost, poor critical slip surface search efficiency, and incomplete stability analysis of multistage loess slopes under earthquake action. A new method is proposed using mathematical analysis and optimization methods that comprehensively considers all possible failure modes based on limit
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At-Rest Lateral Earth Pressure for Coulomb’s Retaining Wall Conditions Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 Guangxian Hou, Shanzhi Shu
An approximate analytical method is developed in this paper to calculate at-rest lateral earth pressure on a retaining wall subject to Coulomb’s Retaining Conditions with positive backslope and non-zero interface friction angle. The solutions were verified using a numerical approach. The procedure presents advantages over current practice using either the Danish Geotechnical Code method or the U. S
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Soil Engineering and Construction Prospects of the Lunar Surface Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 L. I. Cherkasova, V. M. Florenskii
The results of studies on lunar soil science and current problems of lunar soil amelioration engineering are presented.
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New Method to Evaluate the Seismic Ultimate Bearing Capacity of Foundations Adjacent to Slopes Considering the Dilatancy Angle Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 Hongwei Fang, Yixiang Xu
A simple seismic slip line field theory and seismic boundary conditions are developed, and two types of the slope surfaces in the limit state (critical slope contours), i.e., concave and convex, are found. A new failure mechanism is proposed for assessing the seismic ultimate bearing capacity of a foundation adjacent to a slope when considering the dilatancy angle. The seismic ultimate bearing capacity
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Active Earth Pressure of Finite Soil Based on Twin-Shear Unified Strength Theory Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 H. Liu, D. Kong, Y. Zhao, L. Zhang
The influence of the intermediate principal stress was considered based on the twin-shear unified strength theory. The calculation of the finite width earth pressure is treated as a plane strain problem. By using the static equilibrium method under the flat slip surface assumption, an analytical solution of the active earth pressure was obtained under the plane strain state, and the results were compared
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A Method for Calculating the Earth Pressure Acting on a Retaining Wall Considering the Effect of an Adjacent Single Pile Composite Foundation Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 M. Li, Y. Xin, H. Chen, S. Zhao, J. Jin, L. Wu
For an excavation project, the existence of adjacent composite foundations influences the earth pressure on the retaining wall, which will have a significant implication for the design and construction of the excavation project. In this paper, a simplified method is proposed to assess the influence of an adjacent single pile composite foundation in the calculation of earth pressures on a retaining
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Numerical Investigation of Retaining Structure Response to Surrounding Surface Surcharge during Deep Excavation Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-12 C. Ye, Z.-C. Li, Z.-Z. He, R.-Z. Liang, B.-H. Cai, W.-B. Wu, M.-Z. Xiao
We conducted two three-dimensional numerical models to investigate the effects of the surrounding surface surcharge on the deformation of the retaining structure. The results obtained by the finite element model are in good agreement with the field measurements. The deflection of the diaphragm wall increased by 2-3 times owing to the surrounding surface surcharge, which implies that the surrounding
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Numerical Analysis of the Stress-Strain State of a Combined Pile in Permafrost Soils Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 V. V. Mestnikov, I. V. Mestnikova, V. V. Mestnikov
A finite element numerical analysis of the stress-strain state of combined precast-monolithic piles, arranged using the authors’ technology in permafrost soils, has been performed. It is shown that there is no need for reinforcing the entire length of the monolithic part located below the seasonal thawing boundary. Recommendations for the design and reinforcement of such piles, providing a reduction
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Influence of Slope on Calculative Width of Pile Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 S. Kang, R. Deng, Q.-H. Zhao, C.-W. Liu, D. Wang
We use the calculative width to analyze the influence of the slope on the horizontal bearing capacity of a pile. The calculative width is obtained via an equivalent conversion of the m-value from full-scale tests, the soil pressure distribution from model tests, and the integral of the soil displacement of a numerical model. The physical tests show that the calculative width decreases with increasing
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Review on the Application of Nanoparticles to Mitigate Liquefaction Risks Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 S. N. Siddique, J. Deng, E. Mohamedelhassan
The current paper covers the literature, including the applications of nanoparticles (specifically carbon nanotubes, colloidal silica, and bentonite), on sand grain densification and future research potential. Nanoparticles can help to reinforce sand stability because pore-water pressure has such a strong influence on sand strength in geotechnical engineering. When compared with standard reinforcing
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Determination of the Bearing Capacity of a Helical Pile Using Screwing Torque Considering Shaft Geometry Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 A. G. Alekseev, S. G. Bezvolev
The design of efficient helical pile structures is complicated because existing design standards lack clarity. In this work, we discuss a method for determining the ultimate bearing capacity of a pile using the screwing torque recorded during its sinking. The parameters of the corresponding correlation dependence and a method for determining the soil contact friction along the cylinder and tapered
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Fatigue and Acoustic Emission Characteristics of Granite under Different Cyclic Loading Paths Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 Q. W. Zhang, J. Q. Xiao, S. K. Zhang
A large number of experiments were performed to systematically investigate the evolution of the acoustic emission characteristics, dynamic elastic modulus, and axial residual strain of rock under different cyclic loading paths. These results provide experimental support for the damage accumulation and fatigue/failure characteristics of rock structures, and for the construction of a new nonlinear fatigue
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3D Finite Element Modelling of Hydraulic Efficiency of Drainage Trenches Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 E. Volpe, E. Cattoni, D. Salciarini
In this work the hydraulic efficiency of a parallel draining trenches system is evaluated by performing a series of pseudo-3D consolidation analyses using the finite element method. A parametric study has been conducted to investigate the influence of relevant aspects of the problem such as the slope inclination and trench length, which are not considered in currently available 2D solutions. Starting
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Calculation of Thermal Conductivity of Fine Soils Taking into Account the Quantity of Unfrozen Water Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-08-11 O. N. Kravtsova, N. A. Protodyakonova, A. M. Timofeev, A. V. Stepanov, A. V. Malyshev, N. I. Tappyrova
To generalize experimental data on the thermophysical characteristics of soils at positive and negative temperatures and reduce the scope of the experimental work, there is a need to systematize and expand the calculation of the thermal conductivity of soils. This paper proposes a method for calculating the thermal conductivity of fine soils in frozen and thawed states. The calculation models include
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Analysis of Ground Settlement during Shield Tunnel Construction in Soft Soil Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-26 R. Huang, J.-X. Zhu, X.-J. Zhu, Z.-M. Liu
The development of ground settlement during the construction of a shield tunnel in soft soil was analyzed taking the Shaoxing Rail Transit Line 1 tunnel interval as an example. The transverse and longitudinal ground settlements were fitted and analyzed using different prediction methods. The results show that the Peck and Yoshikoshi formulas provide high prediction accuracies for transverse ground
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Numerical Results of Vibration Isolation Effect of Pile Group on Rayleigh Waves in a Fluid-Saturated Half-Space Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-23 Z. Liu, T. Feng, Z. Fu, C. Li
Based on Biot’s theory of two-phase media, the screening effectiveness of a multi-row pile barrier system on incident Rayleigh waves in a fluid-saturated poroelastic half-space is investigated using a high-precision three-dimensional indirect boundary element method for multi-domain scattering. A companion paper has described the theoretical derivation of the model. In this paper, numerical results
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Structural Behavior of an In-Plane Curved Tunnel Based on Beam-Spring Approach Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-21 Y. C. Zhang, M. X. Zhang, Y. F. Ling, X. C. Xiao, A. A. Javadi
This paper presents an in-plane structural analysis of a large-diameter curved tunnel during its construction stage that is performed using the finite element method. Tunnel rings and soil effects are simulated based on a beam-spring approach. Additionally, the nonlinear material properties of the mechanical behavior of the tunnel’s circumferential joints are considered and combined in the model. The
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On Shear Settlement of Driven Piles in Subsiding Soils Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-22 A. M. Dzagov
The article considers the results of testing by static vertical loads of driven piles up to 28 m long in subsiding soils with their support on dense sands and clays. A comparison of experimental shear settlements corresponding to the full mobilization of friction forces on the piles lateral surface with those calculated by known methods is presented. The dependence for determining the reference pile
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Review of Correlation Dependencies Between Seismoacoustic and Geotechnical Characteristics of Frozen Soils Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-22 P. I. Kotov, I. A. Agapkin, M. L. Vladov, A. Zh. Zhusupbekov
Data on the correlation of seismoacoustic and physical-mechanical characteristics of frozen soils have been summarized, which can be used as a basis for improving the methods of engineering and geological surveys, as well as laboratory tests of soils and design in permafrost zones.
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Three-Dimensional Numerical Simulation and Monitoring of the Stability of the Top Wall of a Large-Scale Rectangular Pipe Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-22 Z. -Q. Xiao, Q. -Y. Dong, D. -S. Tang, X. Wang, Y. -N. Jiang, K. Yang, T. -T. Cao
A dynamic three-dimensional finite element analysis model for the stability of the reaction wall of a working well during pipe jacking is established on the basis of the rectangular pipe jacking project of No. 2 Shangdu Road Station on line 4 of the Zhengzhou rail transit system. A comparison of the simulation data with field monitoring data verifies the correctness of the model. Using the model, the
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Analysis of Methods of Modeling the Influence of Tunneling on the Deformation of the Surrounding Soil Mass Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-21 R. F. Sharafutdinov, O. N. Isaev, D. S. Zakatov
The methods and results of modeling the influence of tunneling on the deformations of the surrounding soil mass are analyzed. It is noted that from the standpoint of deformations of the surrounding soil mass the most accurate results are obtained by the settlement method, taking into account the weight of the excavated soil CMW; complex models with double isotropic strengthening (HS, HSS) do not always
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The Application of Laponite Nanoparticle to Lessen the Risks of Liquefaction: An Emerging Technique for Sand Improvement (A Review) Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-21 S. N. Siddique, J. Deng, E. Mohamedelhassan
Soil treatment to mitigate liquefaction risk could be considered as an alternative possibility to reduce structural damage and loss of lives during ground motion events. Soil densification is one of the most common techniques for limiting potential deformations of soil following the application of dynamic loads. Traditional site-stabilizing techniques have limits in terms of full-field treatment, entail
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Three-Dimensional Vibration Isolation Effect of Pile Group on Rayleigh Waves in a Fluid-Saturated Half-Space Soil Mech. Found. Eng. (IF 0.8) Pub Date : 2023-06-21 Z. Liu, T. Feng, Z. Fu, C. Li
Based on Biot’s theory of two-phase media, the screening effectiveness of a multi-row pile barrier system on incident Rayleigh waves in a fluid-saturated poroelastic half-space is investigated using a high-precision threedimensional indirect boundary element method for multi-domain scattering. According to the single-layer potential theory, the scattered wavefield in a poroelastic half-space can be