Undrained behaviour of granular soils conditioned for EPB tunnelling - A new experimental procedure [Undräniertes Verhalten von grobkörnigen Böden für Vortriebe mit EPB-Schilden - Ein neues experimentelles Verfahren]
Sign Up to like & getrecommendations! Published in 2017 at "Geomechanik Und Tunnelbau"
DOI: 10.1002/geot.201600019
Abstract: This paper presents a characterisation campaign carried out on granular soils conditioned for EPB tunnelling using a modified direct shear box. The main objective of soil conditioning is the reduction of its shear strength to… read more here.
Keywords: soils conditioned; undrained behaviour; procedure; conditioned epb ... See more keywords
PFC/FLAC coupled simulation of dynamic compaction in granular soils
Sign Up to like & getrecommendations! Published in 2018 at "Granular Matter"
DOI: 10.1007/s10035-018-0841-y
Abstract: This paper presents the PFC/FLAC coupled method to simultaneously reveal the macro- and micro-mechanisms of granular soils during dynamic compaction. A good agreement was found between the numerical simulation and model test. By analyzing the… read more here.
Keywords: flac coupled; dynamic compaction; granular soils; pfc flac ... See more keywords
Effects of particle gradation and geometry on the pore characteristics and water retention curves of granular soils: a combined DEM and PNM investigation
Sign Up to like & getrecommendations! Published in 2021 at "Granular Matter"
DOI: 10.1007/s10035-020-01063-5
Abstract: Pore characteristics play central roles in the transport of water and gas through granular soils, which is relevant to a wide range of geotechnical and geoenvironmental applications. In this study, a numerical procedure combining the… read more here.
Keywords: water retention; pore characteristics; water; retention curves ... See more keywords
Stereological analyses of microstructure of granular soils using the numerical method
Sign Up to like & getrecommendations! Published in 2017 at "Bulletin of Engineering Geology and the Environment"
DOI: 10.1007/s10064-017-1086-4
Abstract: Microstructure and micromechanics each play a significant role in and are considered to govern the macroscale behavior of granular soils. The digital image analysis method is a popular approach to studying the microstructure of granular… read more here.
Keywords: stereological analyses; method; microstructure granular; granular soils ... See more keywords
Experimental Investigation on the Movement of Soil and Piles in Transparent Granular Soils
Sign Up to like & getrecommendations! Published in 2017 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-017-0353-2
Abstract: In order to visually observe the displacement characteristics of internal soil, model tests on the penetration of six flat-ended piles in synthetic transparent soil were carried out. The granular-soil particles were registered by laser speckles,… read more here.
Keywords: experimental investigation; investigation movement; granular soils; movement soil ... See more keywords
Suffusion-induced deformation and microstructural change of granular soils: a coupled CFD–DEM study
Sign Up to like & getrecommendations! Published in 2019 at "Acta Geotechnica"
DOI: 10.1007/s11440-019-00789-8
Abstract: Behaviour of granular soils subjected to internal erosion involves complex coupling between solid–fluid interaction, skeleton deformation and microstructural evolutions. This paper presents a micro–macro investigation on suffusion in idealized gap-graded and well-graded soils using the coupled… read more here.
Keywords: suffusion; deformation microstructural; fines content; granular soils ... See more keywords
3-D direct numerical model for failure of non-cohesive granular soils with upward seepage flow
Sign Up to like & getrecommendations! Published in 2018 at "Computational Particle Mechanics"
DOI: 10.1007/s40571-017-0180-5
Abstract: The paper reports the application of a 3-D direct particle–fluid simulation model to the seepage failure of granular soils. The goal of this study is to numerically capture the process of the failure which is… read more here.
Keywords: seepage flow; model; granular soils; seepage ... See more keywords
A study of principle stress rotation on granular soils using DEM simulation of hollow cylinder test
Sign Up to like & getrecommendations! Published in 2017 at "Advanced Powder Technology"
DOI: 10.1016/j.apt.2017.05.011
Abstract: Abstract This study presents the numerical modeling of a hollow cylinder test (HCT) on granular soils by modifying the TRUBAL code. The discrete element method (DEM) was employed for this purpose. Owing to the significant… read more here.
Keywords: hollow cylinder; cylinder test; study; granular soils ... See more keywords
Two-dimensional and three-dimensional inherent fabric in cross-anisotropic granular soils
Sign Up to like & getrecommendations! Published in 2019 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2019.103197
Abstract: Abstract This paper characterizes fabric anisotropy of granular soils by using both two-dimensional (2D) and three-dimensional (3D) images and evaluates the accuracy and effectiveness of using 2D images to characterize fabric anisotropy in 3D soils.… read more here.
Keywords: fabric anisotropy; granular soils; fabric; dimensional three ... See more keywords
DEM exploration of confining stress effect in cyclic liquefaction of granular soils
Sign Up to like & getrecommendations! Published in 2021 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2021.104214
Abstract: Abstract Confining stress is a major consideration in the assessment of liquefaction resistance of granular soils. In this study, the influence of confining stress to cyclic liquefaction from micromechanical perspectives are explored using DEM simulations.… read more here.
Keywords: stress; confining stress; granular soils; cyclic liquefaction ... See more keywords
Advances on the acoustic emission testing for monitoring of granular soils
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2021.110110
Abstract: Abstract The application of the acoustic emission (AE) method for granular media has been considered to be challenging and remains limited. Nevertheless, recent successful explorations from different aspects have greatly encouraged people's attempts in this… read more here.
Keywords: emission testing; testing monitoring; acoustic emission; granular soils ... See more keywords