Frontiers of Structural and Civil Engineering
>> 2012,
Volume 6,
Issue 4
doi:
10.1007/s11709-012-0178-2
RESEARCH ARTICLE
Development of a constitutive model for rockfills and similar granular materials based on the disturbed state concept
Department of the Civil Engineering, The University of Guilan, Rasht, Iran
Available online: 2012-12-05
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Abstract
Behavior of rockfills was investigated experimentally and theoretically. A series of standard triaxial compression tests were carried out on a quarried rockfill material at different stress levels. It was found that both the stress level and the shear stress ratio, like most of granular materials, controls the behavior of rockfill materials. At lower shear stress ratios the behavior is much more similar to a nonlinear elastic solid. When the shear stress goes further, the stress-strain curve shows an elasto-plastic behavior which suggests using the disturbed state concept to develop a constitutive model to predict the stress-strain behavior. The presented constitutive model complies reasonably with the experimental data.