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This paper concerns experimental investigations of nonlinear viscosity of subgrades soils under vehicle-induced loading. Subgrade soil samples--collected from the Soil/Aggregate Laboratory at the Geotechnical Exploration Division at the Maryland State Highway Administration, Maryland Department of Transportation--were used to conduct triaxial shear tests under repeated loading that is designed to simulate the cyclic stress induced by vehicles. Investigations in this paper included two aspects. First, a nonlinear viscous model has been introduced to describe the relation of shear stress and strain rate. Second, to model the viscous behavior of soil under cyclic loading, constitutive parameters were investigated and calibrated through experimental results from triaxial shear tests. In this paper, viscous parameters were assumed to be a function of the deviatoric strain and loading repetitions. Viscous behavior of soils changing with deviatoric strain and cyclic loading repetition were studied.
This paper concerns experimental investigations of nonlinear viscosity of subgrades soils under vehicle-induced loading. Subgrade soil samples--collected from the Soil/Aggregate Laboratory at the Geotechnical Exploration Division at the Maryland State Highway Administration, Maryland Department of Transportation--were used to conduct triaxial shear tests under repeated loading that is designed to simulate the cyclic stress induced by vehicles. Investigations in this paper included two aspects. First, a nonlinear viscous model has been introduced to describe the relation of shear stress and strain rate. Second, to model the viscous behavior of soil under cyclic loading, constitutive parameters were investigated and calibrated through experimental results from triaxial shear tests. In this paper, viscous parameters were assumed to be a function of the deviatoric strain and loading repetitions. Viscous behavior of soils changing with deviatoric strain and cyclic loading repetition were studied.
Experimental Investigations in Nonlinear Viscous Behavior of Subgrade Soils under Traffic-Induced Loading
J. Li (author)
1999
52 pages
Report
No indication
English
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