Results 301 to 310 of about 125,532 (350)
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Strain predictions in granular soils
Rheologica Acta, 1974Strains in soils are predominantly non-recoverable and it is therefore appropriate to look towards plastic theory to provide a description of stress strain behaviour. A condition favourable to this approach involving a stress-strain law relating stress to strain increment for granular (non-cohesive) soils was illustrated by Roscoe, Basset, and Cole ...
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A constitutive model for granular soils
Science China Technological Sciences, 2018A simple constitutive model is presented to describe the mechanical behaviors of granular soils in a large stress range. A novel normal compression line (NCL) is first expressed by introducing a limit void ratio ( e L) in the double logarithmic scale. Subsequently, a state parameter ( ξ ) is defined to quantify the current state of granular soils, and ...
YangPing Yao, Lin Liu, Ting Luo
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Microporosity Structure of Coarse Granular Soils
Journal of Geotechnical and Geoenvironmental Engineering, 2010To date the microporosity structures of coarse soils with various coarse/fines contents are still not fully understood. In this study, the pore-size distributions (PSDs) of five types of soil varying from gravel to clay were characterized using mercury intrusion porosimetry.
Zhang, L.M., Li, X.
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Static Soil Resistance to Pipe Ramming in Granular Soils
Journal of Geotechnical and Geoenvironmental Engineering, 2015AbstractPipe ramming is a cost-effective trenchless pipe installation method in which percussive blows generated by a pneumatically or hydraulically powered encased piston rammer are used to advance a pipe or culvert through the ground. To evaluate the feasibility of a pipe ramming installation, engineers must be able to reliably predict the pipe ...
Tadesse Meskele, Armin W. Stuedlein
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2018
A constitutive model is presented to describe the mechanical behaviors of granular soils. A S-shaped normal compression line (NCL) is first expressed by a simple equation. Subsequently, a state parameter (ξ) is defined to quantify the current state of granular soils, and a unified hardening parameter (H) that is a function of the state parameter (ξ) is
Yang-ping Yao, Lin Liu, Ting Luo
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A constitutive model is presented to describe the mechanical behaviors of granular soils. A S-shaped normal compression line (NCL) is first expressed by a simple equation. Subsequently, a state parameter (ξ) is defined to quantify the current state of granular soils, and a unified hardening parameter (H) that is a function of the state parameter (ξ) is
Yang-ping Yao, Lin Liu, Ting Luo
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Micromechanics analysis for unsaturated granular soils
Acta Mechanica Solida Sinica, 2011This paper aims at establishing an anisotropic stress expression for unsaturated pendular-state granular soils. Using the second-order fabric tensor, we formulate a micromechanics scheme of soils with statistically averaging method, and reveal that the macroscopic average stress of unsaturated granular soils in pendular-state is not isotropic. Not only
Weihua Zhang, Chenggang Zhao
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Failure of Fiber-Reinforced Granular Soils
Journal of Geotechnical Engineering, 1996Short fibers have been tried in the past few years as a soil-improvement admixture (reinforcement), yet no failure criteria for fiber-reinforced soils, consistent with numerical methods for solving boundary-value problems, are available. An attempt at deriving the limit condition for a fiber-reinforced granular soil is presented.
Radoslaw L. Michalowski, Aigen Zhao
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Horizontal Subgrade Modulus of Granular Soils
1984Although the horizontal subgrade modulus plays a significant role in problems dealing with lateral-load carrying capacity of piles, a rather wide range of values is available in literature depending upon the equation, chart, or table used to obtain the modulus. This task is further complicated on account of lack of uniformity of definitions used.
K Habibagahi, JA Langer
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Deep Compaction of Granular Soils
1991Several new or improved methods for deep compaction of granular soils have been developed during the last few years: to control settlements to increase the bearing capacity to prevent or to reduce the risk of ...
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