17 Result(s)
within
Longtan Shao
Geotechnical Engineering & Applied Earth Sciences
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Article
Investigation into the shear strength of a weakly expansive soil over a wide suction range
Limited experimental and theoretical research has been conducted on the shear strength of unsaturated soils over a wide suction range. This study aimed to investigate the shear strength characteristics of a we...
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Article
Physical meaning and mechanical effects of the neutral stress and effective stress in unsaturated soils
The physical meaning of the neutral stress and effective stress for soils is still unclear, which leads to the neutral stress for unsaturated soils being totally ignored and increasingly complicated expression...
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Article
Criterion of shear failure along a surface inside soil-mass and its application to progressive failure analysis
This study extended the strength criterion used to determine the failure of a soil structure from a differential expression at a point or an infinitesimal element to an integral expression along a global conse...
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Article
Similarity criterion for the nonlinear thermal analysis of the soil freezing process: considering the dual effect of nonlinear thermal parameters and boundary conditions
Model tests are an important method to predict the design and long-term performance of structures and are widely used to analyze the seismic performance, wind resistance, etc., of special structures. For geoma...
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Article
Triaxial Shear Behavior of Basalt Fiber-Reinforced Loess Based on Digital Image Technology
Engineering construction in loess areas often requires improvement of loess. Basalt fiber-reinforced soil due to complexity of material composition often exhibits poorly predictable mechanical behavior. In thi...
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Article
Design of a three-dimensional earth pressure device and its application in a tailings dam construction simulation experiment
The basic principle of the three-dimensional stress state test is deduced based on the relationship between the normal stress and the conventional stress state, and the relationship between the total stress st...
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Article
Hydraulic classification and sedimentation behaviors of iron tailings
Tailings pond is a large-scale fragmented sedimentary body formed by mining tailings, and the safety management of tailings pond affects the sustainable development of mining productions. The nature sedimentat...
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Article
Experimental investigations of the soil water retention curve under multiple drying–wetting cycles
Natural soils usually experience multiple drying and wetting cycles in geotechnical engineering. In this paper, the influences of history of drying and wetting upon the desorption and adsorption soil–water ret...
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Article
Measurement of local and volumetric deformation in geotechnical triaxial testing using 3D-digital image correlation and a subpixel edge detection algorithm
Based on the three-dimensional digital image correlation (3D-DIC) technique, the stereovision system has been applied to the improved triaxial apparatus to obtain 3D full-field deformation of the specimen duri...
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Article
Measurement of the deformation of sand in a plane strain compression experiment using incremental digital image correlation
This work presents the results from a series of plane strain compression experiments on medium-density sands. In these experiments, a new type of plane strain experimental apparatus and the incremental reliabi...
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Chapter and Conference Paper
Effective Stress and Effective Stress Equation
The concept of effective stress and the effective stress equation is fundamental for establishing the theory of strength and the relationship of stress and strain in soil mechanics. However, up till now, the p...
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Chapter and Conference Paper
Digital Image Measurement System for Soil Specimens in Triaxial Tests
In order to measure the deformation distribution over the entire surface of soil specimens in triaxial tests, a digital image technique is developed by use of a complementary metal-oxide-semiconductor (CMOS) c...
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Chapter and Conference Paper
Numerical Modelling of the Excavation Damaged Zone in Hollow Cylinder Experiment of Boom Clay
Boom clay is currently under investigation as a potential host rock for deep geological disposal of nuclear waste in Belgium. The excavation-induced damaged zone (EDZ) around galleries could have a negative ef...
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Chapter and Conference Paper
On Effective Stress and Effective Stress Equation
The concept of effective stress and the effective stress equation are fundamental for establishing the theory of strength and the relationship of stress and strain in soil mechanics. However, up till now, the ...
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Chapter and Conference Paper
Rapidly Determining the Unsaturated Permeability by Transient Two-Steps Outflow Experiment
Numerous methods have been developed to measure the unsaturated permeability in multi-step outflow experiments. Silicon micro-powder (SMP) and Guangxi Gui** clay (GGC) have been conducted by transient outflo...
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Chapter and Conference Paper
Limit Equilibrium Conditions and Stability Analysis for Soils
This paper describes recent advances in geotechnical stability analysis that combine limit equilibrium analysis with finite element stress analysis to provide a factor of safety and the failure load. This meth...
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Chapter and Conference Paper
A New Setup to Measure Hydraulic Properties of Unsaturated Soils
The measurement of the hydraulic properties of an unsaturated soil is time consuming and complex, and the water evaporation loss may cause error to the measurement of hydraulic conductivity in multi-step outfl...
