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Journal articles on the topic 'Finitely conducting soil'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Le Vine, D. M., L. Gesell, and Michael Kao. "Radiation from lightning return strokes over a finitely conducting Earth." Journal of Geophysical Research 91, no. D11 (1986): 11897. http://dx.doi.org/10.1029/jd091id11p11897.

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2

Topalska, Maria, and Lena Mihova. "FEM Parameters for Earthquake Analysis of Retaining Walls." IOP Conference Series: Materials Science and Engineering 1323, no. 1 (2024): 012015. https://doi.org/10.1088/1757-899x/1323/1/012015.

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Abstract The paper presents the main characteristics and features of numerical finite element (FE) models for the study of the seismic response of soil-retaining wall. Since walls are linear structures, 2D plane strain models are suitable for conducting of the analysis. The models need to include a finitely sized soil domain, whose boundary conditions are defined according to the way earthquake loading is defined, respectively as pseudo-static impact or dynamic impact as a function of time. The FE mesh must meet the criteria of sufficient density in order to ensure the necessary accuracy of th

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3

Cooray, Vernon, Marcos Rubinstein, and Farhad Rachidi. "A Self-Consistent Return Stroke Model That Includes the Effect of the Ground Conductivity at the Strike Point." Atmosphere 13, no. 4 (2022): 593. http://dx.doi.org/10.3390/atmos13040593.

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A current generation type return stroke model which can take into account the possible modifications of the return stroke properties by the soil conductivity at the strike point of the lightning flash is introduced. The model is also capable of incorporating the reflection of the current at the ground end of the return stroke channel. In this paper, this return stroke model is used to investigate (a) the effect of the ground conductivity at the strike point on the source electromagnetic fields generated by return strokes and (b) the effect of current reflection at ground level on the electroma

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4

Jun, Sang Hyun, and Hyuk Jae Kwon. "Constitutive Relationship Proposition of Marine Soft Soil in Korea Using Finite Strain Consolidation Theory." Journal of Marine Science and Engineering 8, no. 6 (2020): 429. http://dx.doi.org/10.3390/jmse8060429.

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This paper proposes representative constitutive relationship equations of dredging and reclamation soft soil in Korea. The marine soft soils were sampled at 23 dredged-reclaimed construction sites in the Busan, Gwangyang, and Incheon regions in Korea; then, laboratory tests were carried out. The consolidation property was classified as LL = 60% for Busan and Gwangyang marine soft soil and LL = 30% for Incheon marine soft soil by conducting basic physical property tests and consolidation tests. Busan soft soil showed a slightly higher consolidation settlement property than Gwangyang soft soil.

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5

Rasouli, Habib, Hana Takhtfirouzeh, Abbasali Taghavi Ghalesari, and Roya Hemati. "Bearing Capacity Improvement of Shallow Foundations Using Cement-Stabilized Sand." Key Engineering Materials 723 (December 2016): 795–800. http://dx.doi.org/10.4028/www.scientific.net/kem.723.795.

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In order to attain a satisfactory level of safety and stability in the construction of structures on weak soil, one of the best solutions can be soil improvement. The addition of a certain percentage of some materials to the soil may compensate for its deficiency. Cement is a suitable material to be used for stabilization and modification of a wide variety of soils. By using this material, the engineering properties of soil can be improved. In this study, the effect of soil stabilization with cement on the bearing capacity of a shallow foundation was studied by employing finite element method.

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6

Ahmad, Majd, and Richard Ray. "Modeling the Stiffening Behavior of Sand Subjected to Dynamic Loading." Geosciences 14, no. 1 (2024): 26. http://dx.doi.org/10.3390/geosciences14010026.

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In geotechnical engineering, dynamic soil models are used to predict soil behavior under different loading conditions. This is crucial for many dynamic geotechnical problems related to earthquakes, train loading and machine foundation design. Researchers agree that under dry or drained conditions, cohesionless soils increase in stiffness with each loading cycle. Soil models that simulate the dynamic behaviors of soils are often coupled with the Masing criteria. Such models neglect the impact of stiffening during cyclic loading, leading to an underestimation in the shear modulus (G). This study

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7

Bondareva, Liudmyla, Ivan ZIMENKO, and Kostiantyn BONDAREV. "Interpretation of the data of modern methods of field soil research." Bases and Foundations, no. 48 (June 28, 2024): 61–74. http://dx.doi.org/10.32347/0475-1132.48.2024.61-74.

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This study examines modern in-situ testing methods for soils; it investigates the impact of interpreting these methods on the calculated strength and deformation parameters of soils and compares them with tabulated values according to the DSTU (Standard of Ukraine). In today's world, there is an urgent need for accurate and prompt soil investigations, which are crucial for design and construction. Although laboratory methods are reliable, they often require significant time and resources. The advantage of in-situ methods lies in the fact that testing is performed directly in the soil mass, mea

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8

Pang, Ying Bo. "Seismic Response Analysis of Soil-Structure Interaction on Base Isolation Structure." Advanced Materials Research 663 (February 2013): 87–91. http://dx.doi.org/10.4028/www.scientific.net/amr.663.87.

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As an effective way of passive damping, isolation technology has been widely used in all types of building structures. Currently, for its theoretical analysis, it usually follows the rigid foundation assumption and ignores soil-structure interaction, which results in calculation results distortion in conducting seismic response analysis. In this paper, three-dimensional finite element method is used to establish finite element analysis model of large chassis single-tower base isolation structure which considers and do not consider soil-structure interaction. The calculation results show that:

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9

Zhang, Hui, and Jing Zhang. "The Application of Finite Element Method in Calculating Two-Dimensional Heat Conduction in the Ground." Advanced Materials Research 988 (July 2014): 479–82. http://dx.doi.org/10.4028/www.scientific.net/amr.988.479.

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This thesis simulated the principle of the fast heat conductivity testing instrument, introduced how to use the finite element method to calculate two-dimensional unstable heat conduction condition. When establish the mathematical model, the article simplifies the soil temperature field as the two-dimensional non-stable heat conduction problem. Through computation it can get the soil temperature field at any moment in the running time and the plan uniform temperature lines, that also may obtain the change of temperature about one point in the process. The method is simple and credible. These s

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10

Dumais, Simon, and Jean-Marie Konrad. "One-dimensional large-strain thaw consolidation using nonlinear effective stress – void ratio – hydraulic conductivity relationships." Canadian Geotechnical Journal 55, no. 3 (2018): 414–26. http://dx.doi.org/10.1139/cgj-2017-0221.

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A one-dimensional model for the consolidation of thawing soils is formulated in terms of large-strain consolidation and heat-transfer equations. The model integrates heat transfer due to conduction, phase change, and advection. The hydromechanical behaviour is modelled by large-strain consolidation theory. The equations are coupled in a moving boundary scheme developed in Lagrangian coordinates. Finite strains are allowed and nonlinear effective stress – void ratio – hydraulic conductivity relationships are proposed to characterize the thawing soil properties. Initial conditions and boundary c

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11

MANZARI, MAJID T., and KARMA YONTEN. "ON IMPLEMENTATION AND PERFORMANCE OF AN ANISOTROPIC CONSTITUTIVE MODEL FOR CLAYS." International Journal of Computational Methods 11, no. 02 (2014): 1342009. http://dx.doi.org/10.1142/s0219876213420097.

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Numerical implementation of an anisotropic constitutive model for clays (SANICLAY) is presented. Moreover, a case study in which a soil embankment is placed on a K0-consolidated over-consolidated clay is analyzed by conducting an elastoplastic fully-coupled finite element analysis. It is shown that anisotropy has significant impact on the ground settlement caused by the placement of soil embankment and on the pore pressure generation and dissipation within the foundation soil. The simulations using SANICLAY favorably compare with the field measurements of ground settlement and pore pressure. T

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12

Xu, Shi Liang. "Inverse Heat Conduction Problem of the Temperature Field with Artificial Ground Freezing Method." Advanced Materials Research 243-249 (May 2011): 89–92. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.89.

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The Artificial Ground Freezing (AGF) Method play an important role in the geotechnical engineering and the back analysis of thermal conductivity of frozen soil is the main inverse heat conduction problem of temperature field. In this paper the physical modelling test of AGF is carried out with double-row-pipe freezing in the lab. According to the measured temperature, the back analysis of thermal conductivity of frozen soil is solved based on the two-dimensional finite element simulation and the least square principle. It is helpful to investigate the freezing process and determine the frozen

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13

Lv, Qing Feng, Peng Fei Liu, and Yan Xu Zhao. "Finite Element Analysis of Rainfall Infiltration in a Compacted Loess Embankment." Advanced Materials Research 936 (June 2014): 1511–17. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1511.

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Because of evapo-transpiration, compacted loess road embankments were considered to be in a partially saturated state in both arid and semi-arid regions. Based on previous studies and the theory of unsaturated soil mechanics, a numerical analysis of rainfall infiltration in a compacted loess road embankment was conducted. The transient seepage characteristics and moisture migration patterns of the moisture in the embankment were analysed. The results showed that after precipitation, the moisture profile of the compacted loess could be separated into three zones .The data also showed that: unde

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14

Rysbaiuly, B., and S. D. Alpar. "Nonlinear inverse problem of finding thermophysical characteristics." Bulletin of the National Engineering Academy of the Republic of Kazakhstan 85, no. 3 (2022): 148–57. http://dx.doi.org/10.47533/2020.1606-146x.183.

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In this paper, a method has been developed for determining the nonlinear heat-conducting characteristics of the soil. Two-layer container complexes were created, the side faces of which are thermally insulated, so the 1D thermal conductivity equation is used. The temperature sensor is placed at the junction of two media, and a mixed boundary value problem is solved in each region. In order to provide the inverse coefficient problem with initial data, two temperature sensors are used: one sensor was placed at the open boundary of the container and recorded the soil temperature at this boundary,

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15

Rysbaiuly, B., and S. D. Alpar. "Nonlinear inverse problem of finding thermophysical characteristics." Bulletin of the National Engineering Academy of the Republic of Kazakhstan 88, no. 2 (2023): 72–81. http://dx.doi.org/10.47533/2023.1606-146x.7.

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In this paper, a method has been developed for determining the nonlinear heat-conducting characteristics of the soil. Two-layer container complexes were created, the side faces of which are thermally insulated, so the 1D thermal conductivity equation is used. The temperature sensor is placed at the junction of two media, and a mixed boundary value problem is solved in each region. In order to provide the inverse coefficient problem with initial data, two temperature sensors are used: one sensor was placed at the open boundary of the container and recorded the soil temperature at this boundary,

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16

Wang, Jun, Hong Guang Ji, Chuan Qing Wang, and Kaiyun Luan. "Numerical Analysis for Displacement Law of Deep Alluvium Frozen Wall in Thousand Metres Vertical Well." Advanced Materials Research 243-249 (May 2011): 2634–37. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.2634.

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During freezing sinking, the displacement and affecting factors of deep alluvium frozen soil wall was a technical problem which need to be resolved. Based on designing frozen soil wall in deep alluvium in thousand metre vertical wall, making use of mathematic simulation software of FLAC after selected ten samples from exceeding 400metres depth as calculation model, which the frozen clay creep parameters with finite transformation considered, the maximum radial displacement was obtained. The factors affecting it such as frozen soil thick, height of deep alluvium, segment height, exposure time a

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17

N. K. PETROSIAN and O. L. TIUTKIN. "EXPRESS-ANALYSIS OF THE STRESS-STRAIN STATE OF THE UNFASTENED EXCAVATION ON THE BASIS OF MODEL WITH SINGLE PARAMETERS." Bridges and tunnels: Theory, Research, Practice, no. 11 (December 9, 2017): 59–66. http://dx.doi.org/10.15802/bttrp2017/158791.

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Purpose. Bases of conducting of the express-analysis of the stress-strain state of the unfastened excavation of certain diameter on the basis of finite elements analysis of model with single parameters (closeness of soil and his module of resiliency) are developed in the article. Methodology. To achieve this goal, the authors, from the standpoint of the theory of elasticity and the fundamentals of the finite element method, carried out a justification for the development of the stress-strain state around the excavation of a circular outline. A finite element model for the excavation of a circu

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18

Deru, Michael P., and Allan T. Kirkpatrick. "Ground-Coupled Heat and Moisture Transfer from Buildings Part 2–Application." Journal of Solar Energy Engineering 124, no. 1 (2001): 17–21. http://dx.doi.org/10.1115/1.1435651.

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In this paper, the effects of moisture on the heat transfer from two basic types of building foundations, a slab-on-grade and a basement, are examined. A two-dimensional finite element heat and moisture transfer program is used to show the effects of precipitation, soil type, foundation insulation, water table depth, and freezing on the heat transfer from the building foundation. Comparisons are made with a simple heat conduction model to illustrate the dependency of the soil thermal conductivity on moisture content.

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19

Zhang, Zechao, Hongbo Liu, and Zhihua Chen. "Lateral Buckling Theory and Experimental Study on Pipe-in-Pipe Structure." Metals 9, no. 2 (2019): 185. http://dx.doi.org/10.3390/met9020185.

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With the increasing depth of marine oil and gas exploitation, more requirements have been proposed on the structure of deep-sea oil pipelines. The influencing factors of lateral buckling of a pipe-in-pipe (PIP) structure containing initial imperfections and its critical force were investigated in this study by conducting an experiment, a finite element analysis, and a theoretical derivation. The change laws on the influence of initial imperfections of the PIP structure during thermal loading were revealed through an experimental study by using imperfection amplitude and wavelength as parameter

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20

Wu, Bin, Chenhe Ge, Pengfei Li, Meng Yang, and Liulian Li. "Influence of Deep Foundation Pit Excavation on Adjacent Pipelines: A Case Study in Nanjing, China." Applied Sciences 14, no. 2 (2024): 572. http://dx.doi.org/10.3390/app14020572.

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To investigate the pipeline deformation pattern caused by the excavation of deep foundation pits in composite soil–rock strata, a comprehensive study integrating on-site monitoring and numerical simulation was conducted. This study centered on a deep foundation excavation project in the soft soil in Nanjing’s floodplain region. The analyses of pipeline settlement and deformation were performed based on field-measured data. This study investigated the impact of excavation on the mechanical properties of the surrounding soil that resulted in the progressive deformation of adjacent pipelines. Fur

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21

Asensio, Gabriel, Eduardo Faleiro, Jorge Moreno, and Gregorio Denche. "Electromagnetic Fields from Cloud-to-Cloud Horizontal Lightning Channel on Perfect Conducting Soil: Induced Potentials in Flying Aircraft." Applied Sciences 13, no. 17 (2023): 9584. http://dx.doi.org/10.3390/app13179584.

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Calculation expressions for the electric and magnetic fields produced by a horizontal cloud-to-cloud lightning channel, assuming a perfectly conducted ground, are proposed in this paper. These expressions depend on the current model traveling through the channel and serve as the starting point to calculate the induced fields and potentials at any point in space. The derived expressions for the fields are used to calculate the induced potentials by the channel on metallic structures such as vertically driven rods in the ground and aircraft in flight. The influence of soil with finite conductivi

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22

Deru, Michael P., and Allan T. Kirkpatrick. "Ground-Coupled Heat and Moisture Transfer from Buildings Part 1–Analysis and Modeling*." Journal of Solar Energy Engineering 124, no. 1 (2001): 10–16. http://dx.doi.org/10.1115/1.1435652.

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Ground-heat transfer is tightly coupled with soil-moisture transfer. The coupling is threefold: heat is transferred by thermal conduction and by moisture transfer; the thermal properties of soil are strong functions of the moisture content; and moisture phase change includes latent heat effects and changes in thermal and hydraulic properties. A heat and moisture transfer model was developed to study the ground-coupled heat and moisture transfer from buildings. The model also includes detailed considerations of the atmospheric boundary conditions, including precipitation. Solutions for the soil

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23

Li, Ye Xu, Farid Paul Dawalibi, and Jin Xi Ma. "Grounding System Analysis and Design Considerations for Large Hydroelectric Power Plant." Advanced Materials Research 516-517 (May 2012): 1359–66. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1359.

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Grounding system analysis and design considerations for large hydroelectric power plant are analyzed and discussed in this paper. The main work that has been carried out includes: constructing adequate soil structures and analyzing the effects of the finite heterogeneous soil structure, the modeled river length and the water reservoir levels; conducting accurate fault current distribution calculations and studying the influence of circulating current on the touch and step voltages. The paper discusses the design of the grounding system and its safety performance while considering the impact of

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24

Xiong, Run, Qin Yin, Wen Yang, Yan Liu, and Jun Li. "Improvement of Shaped Conductive Backfill Material for Grounding Systems." Applied Computational Electromagnetics Society 36, no. 4 (2021): 442–49. http://dx.doi.org/10.47037/2020.aces.j.360410.

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In this paper, some improvements have been proposed for low resistance shaped conductive backfill material (SCBM) based on finite-difference time-domain (FDTD) simulations in grounding systems. It is found SCBM can be produced by conjunction of several layers with conductivity decreasing gradually from inner layer to outer layer, and smooth conductivity reduction between layers would lead to a better grounding performance. It is also found cuboid shape is a much more efficient shape than cube and cylinder shapes for SCBM, and holes can be made on the SCBM’s main body. It suggested to bury SCBM

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25

Shen, Guo Min, Chun Fang Lu, and Yi Wang. "The Influence of Heat and Moisture Transfer in Soil on the Performance of the Ground Heat Exchanger." Advanced Materials Research 594-597 (November 2012): 2120–27. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2120.

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In this paper, a numerical heat and moisture transfer model (HMTM) and a pure conduction model (PCM) were established separately for unsaturated soil around the ground heat exchanger (GHE) and were numerically solved by finite volume method. The simulation results indicate that rejecting heat into soil can reduce moisture content in the vicinity of the borehole wall. When the initial moisture content is high, moister transfer has little effect on soil thermal properties. In this case, the results of the HMTM and the PCM are basically identical. On the contrary, when the initial moisture conten

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26

Liu, Guo Dan, Fu Sheng Liu, Dan Meng, Xu Quan Li, Zhi Gang Shi, and Gang Wang. "Studied on Return Water Temperature of Buried Pipe and Soil Temperature Field of Soil-Source Heat Hump System by the Finite-Element Method." Advanced Materials Research 171-172 (December 2010): 163–66. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.163.

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Heat transfer model of buried pipe heat exchanger is established first, and solved by the ANSYS finite element simulation software. Model is verified by experiment, average error is 6.4%. On the above basis, return water temperature of buried pipe and soil temperature are analyzed during whole operation. Through whole cooling season, outlet water temperature of buried pipe increased by 6.7°C, up to 21.2°C. After 45 days on transition season, temperature reduced 3.2°C, up to 18°C. Within one year, temperature difference is above 1.1°C before-and-after heating and cooling operation. It reveals t

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27

Higa, Yoshikazu, Kohei Uehara, Hirofumi Iyama, Tatsuhiro Tamaki, and Shigeru Itoh. "A Computational Simulation for Explosive Ordnance Disposal." Materials Science Forum 767 (July 2013): 74–79. http://dx.doi.org/10.4028/www.scientific.net/msf.767.74.

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In order to clarify the characteristic behavior such as shockwave propagation, dispersion of sand and the crater depth due to explosive ordnance disposal, the finite element models of soil, surrounding air and explosive have been constructed based on HyperWorks-RADIOSS (®Altair) software. By conducting a series of numerical simulations, it has been observed the effect of explosion on the crater depth and diameter, overpressure exerted on sand and the surrounding air. These results based on the computational mechanics are useful data for setting the evacuation area and its distance associated w

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28

Thomas, H. R. "On the development of a model of coupled heat and moisture transfer in unsaturated soil." Canadian Geotechnical Journal 29, no. 6 (1992): 1107–12. http://dx.doi.org/10.1139/t92-128.

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The salient characteristics of a model of coupled heat and mass transfer in unsaturated soil are presented as a subset of a more complex model of the thermal–hydraulic–mechanical behaviour of unsaturated soil currently under development. Liquid and vapour flow continuity are considered separately before combining the two into a conservation of mass equation. Heat transfer by means of conduction, latent heat of vaporisation effects, and sensible heat transfer are included. A numerical simulation of the complete formulation is achieved via the use of the finite element method for spatial discret

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29

Rui, Yi, and Mei Yin. "Investigations of pile–soil interaction under thermo-mechanical loading." Canadian Geotechnical Journal 55, no. 7 (2018): 1016–28. http://dx.doi.org/10.1139/cgj-2017-0091.

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Thermo-active piles that couple load bearing with ground source heat pump systems are one of the new technologies in geotechnical engineering. This paper investigates the pile–soil interaction behaviour of a thermo-active pile in overconsolidated London clay by conducting a thermo-hydro-mechanical finite element analysis using an advanced soil constitutive model. Negative and positive excess pore pressures are computed around the pile during cooling and heating, respectively. However, the difference in the radial effective stress acting on the pile–soil interface between the cooling and heatin

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30

Krarti, Moncef, and David E. Claridge. "Two-Dimensional Heat Transfer From Earth-Sheltered Buildings." Journal of Solar Energy Engineering 112, no. 1 (1990): 43–50. http://dx.doi.org/10.1115/1.2930758.

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This paper describes use of the Interzone Temperature Profile Estimation (or ITPE) technique, an analytical calculation procedure to predict heat transfer within earth in contact with a structure. The solutions governing steady-state and steady-periodic heat conduction are derived for rectangular earth-sheltered buildings. The procedure accepts continuously variable values of geometric dimensions, insulation levels, and constant soil thermal characteristics and considers the presence of a finite water table level. Soil temperature profiles are shown for both steady-state and steady periodic co

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31

Olga, Michuta, Ivanchuk Natalia, Martyniuk Petro, and Ostapchuk Oksana. "A FINITE-ELEMENT STUDY OF ELASTIC FILTRATION IN SOILS WITH THIN INCLUSIONS." Eastern-European Journal of Enterprise Technologies 5, no. 5 (107) (2020): 41–48. https://doi.org/10.15587/1729-4061.2020.215047.

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Soil environments are heterogeneous in their nature. This heterogeneity creates significant difficulties both in terms of construction practice and in terms of the mathematical modeling and computer simulation of the physical-chemical processes in these heterogeneous soil arrays. From the standpoint of mathematical modeling, the issue is the discontinuity of functions, which characterize the examined processes, on such inclusions. Moreover, the characteristics of such inclusions may depend on the defining functions of the processes studied (head, temperature, humidity, the concentration of che

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32

Zhang, X., P. Yi, C. Han, and J. Liu. "Effect of interface conditions on mudmat bearing capacity under V–H–M loading." Géotechnique Letters 15, no. 3 (2025): 1–9. https://doi.org/10.1680/jgele.24.00115.

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Sliding mudmat foundations, also termed as tolerably mobile foundations, are allowed to slide on the seabed, such that the overstress on the connected pipeline due to high temperature and high pressure can be significantly reduced. Unlike traditional mudmat foundations, with the horizontal displacement confined, horizontal movement of the sliding mudmat is achieved by reducing the friction along the mudmat–soil interface. This study aims at investigating the effect of the interface friction ratio on the response of the mudmat under uniaxial or combined V–H–M loading by conducting a series of f

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33

Zeng, Yongqing, Yinghuan Zhang, Weidong Hu, et al. "A case study on soil slope landslide failure and parameter analysis of influencing factors for safety factor based on strength reduction method and orthogonal experimental design." PLOS ONE 19, no. 5 (2024): e0300586. http://dx.doi.org/10.1371/journal.pone.0300586.

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In civil engineering, stability analysis of slope is one of the main content of design. By using the finite element limit analysis software OptumG2, a landslide geological model is established to simulate the failure process of the landslide in Huadu District, Guangzhou City, China. The analysis focused on the deformation and failure characteristics, as well as the mechanical mechanism of landslide; the landslide mode of homogeneous soil is circular sliding. Additionally, investigating the influencing factors affecting slope stability is crucial in engineering implementation; in which the five

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34

Rui, Yi, and Mei Yin. "Thermo-hydro-mechanical coupling analysis of a thermo-active diaphragm wall." Canadian Geotechnical Journal 55, no. 5 (2018): 720–35. http://dx.doi.org/10.1139/cgj-2017-0158.

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Thermo-active diaphragm walls that combine load bearing ability with a ground source heat pump (GSHP) are considered to be one of the new technologies in geotechnical engineering. Despite the vast range of potential applications, current thermo-active diaphragm wall designs have very limited use from a geotechnical aspect. This paper investigates the wall–soil interaction behaviour of a thermo-active diaphragm wall by conducting a thermo-hydro-mechanical finite element analysis. The GSHP operates by circulating cold coolant into the thermo-active diaphragm wall during winter. Soil contraction

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35

Wibowo, Dian Eksana, Yusep Muslih Purwana, and Bambang Setiawan. "Ultimate Pullout Capacity of Anchors in Sandy Soil." IOP Conference Series: Earth and Environmental Science 1488, no. 1 (2025): 012084. https://doi.org/10.1088/1755-1315/1488/1/012084.

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Abstract Ground anchors are supporting structures that can increase the pullout capacity of building structures. The pullout capacity from the installation of ground anchors itself becomes a crucial force in maintaining the stability of the supported structure. The aim of this article is to provide knowledge and offer solutions to problems encountered in the field. The methodology involved conducting controlled laboratory tests on anchors installed in sandy soil, varying factors such as anchor size, installation depth, and soil density. Additionally, the study employed numerical simulations us

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36

Teixeira, F. L., Weng Cho Chew, M. Straka, M. L. Oristaglio, and T. Wang. "Finite-difference time-domain simulation of ground penetrating radar on dispersive, inhomogeneous, and conductive soils." IEEE Transactions on Geoscience and Remote Sensing 36, no. 6 (1998): 1928–37. http://dx.doi.org/10.1109/36.729364.

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37

Zhang, Liang, Tiehang Wang, Zaikun Zhao, and Xin Jin. "Research on Bearing Difference between Single-Pile Composite Foundation Field Test and Group-Pile Composite Foundation of High-Rise Buildings." Buildings 13, no. 9 (2023): 2127. http://dx.doi.org/10.3390/buildings13092127.

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The reliability of high-rise buildings’ rigid-pile composite foundations primarily relies on the load test results of single-pile composite foundations. Field load tests were conducted for a high-rise building in the loess area of China, the results conformed to the design requirements. Nevertheless, the buildings experienced significant settlement after construction, which was quite different from the test results. Investigating bearing disparities between the single-pile and group-pile composite foundations in high-rise structures was necessary. Firstly, conducting an indoor interface shear

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38

Koutsoupaki, Elisavet-Isavela, Dimitris Sotiriadis, Nikolaos Klimis, and Ioannis Dokas. "Seismic Fragility Analysis of Retaining Walls Dependent on Initial Conditions." Geosciences 14, no. 1 (2023): 2. http://dx.doi.org/10.3390/geosciences14010002.

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Fragility curves of retaining walls constitute an efficient tool for the estimation of seismic risk and can be utilized for prevention from potential damage or for immediate decision-making. In this work, fragility curves for cantilever retaining walls of three different heights are proposed, considering cohesionless soil materials. The seismic response of the soil-wall system, in terms of permanent vertical ground displacement of the backfill soil and permanent horizontal displacement of the wall’s base, is estimated by conducting non-linear time history analyses, through the 2D finite elemen

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Ahmed, Asif, Sadik Khan, Sahadat Hossain, Tural Sadigov, and Prabesh Bhandari. "Safety Prediction Model for Reinforced Highway Slope using a Machine Learning Method." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 8 (2020): 761–73. http://dx.doi.org/10.1177/0361198120924415.

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Recycled plastic pin (RPP) has been proved to be an effective and inexpensive solution for shallow slope stabilization. Current practice suggests conducting numerical modeling to find out the desired factor of safety (FS) using RPP in the design of landslide repair. While the slope stability is heavily dependent on soil strength parameters and slope geometry, RPP length and spacing can also play a significant role in reaching the target factor of safety for the highway slope. During this study, a safety prediction model was developed using both statistical and machine learning (ML) approaches

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Zhang, Yunfeng, Erchun Zhang, and Jialiang Gu. "Evaluation of Horizontal Electric Field from the Lightning Channel by Electromagnetic Field Equations of Moving Charges." International Journal of Antennas and Propagation 2019 (December 14, 2019): 1–8. http://dx.doi.org/10.1155/2019/4091586.

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The horizontal electric field from the lightning return-stroke channel is evaluated by the electromagnetic field equations of moving charges in this paper. When a lightning flash strikes the ground, the charges move upward the lightning channel at the return-stroke speed, thereby producing the electromagnetic fields. According to the electromagnetic field equations of moving charges, the detained charges, uniformly moving charges, and decelerating (or accelerating) charges in each segment of the channel generate electrostatic fields, velocity fields, and radiation fields, respectively. The hor

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Pan, Lin, Xuelei Cheng, and Jinhong Xia. "Similarity Criterion of Freezing Model Test considering Nonlinear Variation of Thermal Parameters with Temperature." Mathematical Problems in Engineering 2020 (October 7, 2020): 1–11. http://dx.doi.org/10.1155/2020/7468034.

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The significant differences in specific heat and thermal conductivity of ice and water lead to the changes of specific heat and thermal conductivity of soil during the freezing process. This makes it hard for the temperature field similarity criterion based on constant thermal parameters to accurately reflect the temperature field evolution of soil mass caused by nonlinearity of thermal parameters in the process. Based on heat conduction differential equation considering nonlinear changes of thermal parameters, this paper uses similarity transformation method to derive the similarity criterion

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Kalatehjari, Roohollah, Ali Arefnia, Ahmad Safuan A Rashid, Nazri Ali, and Mohsen Hajihassani. "Determination of three-dimensional shape of failure in soil slopes." Canadian Geotechnical Journal 52, no. 9 (2015): 1283–301. http://dx.doi.org/10.1139/cgj-2014-0326.

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This paper presents the application of particle swarm optimization (PSO) in three-dimensional (3D) slope stability analysis to determine the shape and direction of failure as the critical slip surface. A detailed description of adopted PSO is presented and a rotating ellipsoidal shape is introduced as the possible failure surface in the analysis. Based on the limit equilibrium method, an equation of factor of safety (FoS) was developed with the ability to calculate the direction of sliding (DoS) in its internal process. A computer code was developed in Matlab to determine the 3D shape of the f

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Sodha, Mahendra Singh, Ashutosh Sharma, and Sujeet Kumar Agarwal. "Focusing of electromagnetic beams in ionosphere with finite thermal conduction." Journal of Geophysical Research: Space Physics 112, A3 (2007): n/a. http://dx.doi.org/10.1029/2006ja012067.

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Zhang, Linlin, Zhonghua Shi, and Tianhao Yuan. "Study on the Coupled Heat Transfer Model Based on Groundwater Advection and Axial Heat Conduction for the Double U-Tube Vertical Borehole Heat Exchanger." Sustainability 12, no. 18 (2020): 7345. http://dx.doi.org/10.3390/su12187345.

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In this paper, a dynamic heat transfer model for the vertical double U-tube borehole heat exchanger (BHE) was developed to comprehensively address the coupled heat transfer between the in-tube fluid and the soil with groundwater advection. A new concept of the heat transfer effectiveness was also proposed to evaluate the BHE heat exchange performance together with the index of the heat transfer rate. The moving finite line heat source model was selected for heat transfer outside the borehole and the steady-state model for inside the borehole. The data obtained in an on-site thermal response te

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Zhao, Jie, Bo Qian, Changjiang Gan, Jianshan Wang, and Yanli Peng. "Investigation of Lateral and Longitudinal Deformation of Submarine Nuclear Power Plant Water-Intake Tunnel on Non-Uniform Soft Soil during Earthquake." Applied Sciences 14, no. 13 (2024): 5565. http://dx.doi.org/10.3390/app14135565.

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The safety-grade water-intake immersed tunnel plays a vital role in the nuclear power cooling system, and its seismic safety is crucial. This paper employs the response displacement method and dynamic time-history analysis using the finite element software ANSYS to construct a beam–spring model and a 3D finite element model of a shield tunnel and foundation. It also develops equivalent linear dynamic constitutive and viscoelastic boundary element subprograms. This study focuses on the weak joint sections of immersed tunnels, conducting a seismic performance analysis under extreme safety earthq

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Sokornov, Anton, Aleksandr Kon'kov, Yuriy Filonov, and Evgenii Kozin. "Mathematical modeling of thermodynamic processes in subway ventilation shafts." Proceedings of Petersburg Transport University 21, no. 2 (2024): 457–69. http://dx.doi.org/10.20295/1815-588x-2024-02-457-469.

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Objective: To develop recommendations for performing thermal engineering calculations during the ventilation shafts renovation with the creation of internal thermal insulation made of foam glass concrete. Methods: Mathematical modeling by the Metrogiprotrans method of the shaft lining in an elastic medium for specified movements from expanding ice; mathematical modeling by the finite elements method of a system including a ground massive, shaft lining and a load from convection (cold air flow). Results: The criteria for the risk of the ventilation shafts lining destruction during freezing of w

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Sivtsev, Petr V., Piotr Smarzewski, and Sergey P. Stepanov. "Numerical Study of Soil-Thawing Effect of Composite Piles Using GMsFEM." Journal of Composites Science 5, no. 7 (2021): 167. http://dx.doi.org/10.3390/jcs5070167.

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During construction works, it is advisable to prevent strong thawing and an increase in the moisture content of the foundations of engineering structures in the summer. Since the density of water and ice differ, due to the difference bulging of the foundation sections can occur when it freezes back in winter. In this work, the effect of fiber-reinforced piles on the thermal field of the surrounding soil is investigated numerically; that is, the study of the influence of aggregates with high and low thermal-physical properties on the temperature of frozen soils is conducted. Basalt and steel fi

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Hromadka, T. V. "Analyzing Numerical Errors in Domain Heat Transport Models Using the CVBEM." Journal of Offshore Mechanics and Arctic Engineering 109, no. 2 (1987): 163–69. http://dx.doi.org/10.1115/1.3257005.

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Besides providing an exact solution for steady-state heat conduction processes (Laplace-Poisson equations), the CVBEM (complex variable boundary element method) can be used for the numerical error analysis of domain model solutions. For problems where soil-water phase change latent heat effects dominate the thermal regime, heat transport can be approximately modeled as a time-stepped steady-state condition in the thawed and frozen regions, respectively. The CVBEM provides an exact solution of the two-dimensional steady-state heat transport problem, and also provides the error in matching the p

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Wang, Minghua, Xiaoliang Wang, Guoqiang Fu, Mi Zhou, and Jian Chen. "A Numerical Study on the Utilization of Small-Scale Model Testing for Slope Stability Analysis." Buildings 15, no. 7 (2025): 1015. https://doi.org/10.3390/buildings15071015.

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Small-scale model tests have been used widely to examine the behavior of slopes. When all similarity principles are conformed, the test results can be translated to the behaviors of slopes in the prototype. However, when the similarity principles cannot be fully conformed, the model test results need to be interpreted. The interpretation of the slopes stability behaviors from the small-scale model test under non-conformity conditions to that of the prototype is investigated, considering various slope scales and soil properties, undertaken through the finite element (FE) method conducted by the

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Lijith, K. P., and R. G. Robinson. "Application of Asaoka’s Method in Multistage Triaxial Compression Testing of Normally Consolidated Soils." Geotechnical Testing Journal 47, no. 6 (2024): 1328–43. http://dx.doi.org/10.1520/gtj20230555.

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Abstract Determination of shear strength parameters becomes a challenge when it is difficult to retrieve a minimum of three identical undisturbed soil specimens. In such a situation, multistage triaxial compression testing can be adopted using a single specimen. Multistage triaxial testing involves stage-wise consolidation and shearing at three confining pressures without the failure of the specimen until the last stage. A critical issue associated with multistage triaxial testing is the estimation of ultimate deviator stress and the corresponding pore pressure as the specimen was not allowed

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