Large-scale triaxial testing and numerical modeling of rounded and angular rockfill materials

This paper studies the behavior of a number of blasting (angular) and alluvium (rounded) modeled rock ll materials by conducting large-scale triaxial testing, as well as numerical modeling. The numerical modeling is based on an elasto-plastic theory and enables one to predict the stress-strainvolumetric behavior of materials during shearing. The material parameters were determined from the experimental and numerical modeling. Variations of the material parameters, with respect to the con ning pressure, Los Angeles abrasion, Point Load index, and particle breakage were investigated. Also, for design applications, curves fitted to the data are presented.

[1]  R. Hirschfeld,et al.  High-Pressure Triaxial Tests on a Compacted Sand and an Undisturbed Silt , 1964 .

[2]  G. Wayne Clough,et al.  Behavior of Granular Materials Under High Stresses , 1968 .

[3]  E. Fumagalli,et al.  Tests on Cohesionless Materials for Rockfill Dams , 1969 .

[4]  J. M. Duncan,et al.  Nonlinear Analysis of Stress and Strain in Soils , 1970 .

[5]  Rj Frost,et al.  Some Testing Experiences and Characteristics of Boulder-Gravel Fill in Earth Dams , 1973 .

[6]  三浦 哲彦,et al.  Particle-crushing of a decomposed granite soil under shear stresses. , 1979 .

[7]  B. Hardin,et al.  Crushing of Soil Particles , 1985 .

[8]  Jerry A. Yamamuro,et al.  SIGNIFICANCE OF PARTICLE CRUSHING IN GRANULAR MATERIALS , 1996 .

[9]  H. D. Christie,et al.  Shear Behavior of Railway Ballast Based on Large-Scale Triaxial Tests , 1998 .

[10]  R. B. J. Brinkgreve,et al.  Plaxis finite element code for soil and rock analyses , 2002 .

[11]  B. Indraratna,et al.  Modelling of particle breakage of coarse aggregates incorporating strength and dilatancy , 2002 .

[12]  Stein Sture,et al.  Strain Localization in Sand: Plane Strain versus Triaxial Compression , 2003 .

[13]  Nasser Khalili,et al.  A bounding surface plasticity model for sands exhibiting particle crushing , 2004 .

[14]  G. Habibagahi,et al.  PREDICTION OF COLLAPSE POTENTIAL FOR COMPACTED SOILS USING ARTIFICIAL NEURAL NETWORKS , 2004 .

[15]  B. Indraratna,et al.  A new elastoplastic constitutive model for coarse granular aggregates incorporating particle breakage , 2004 .

[16]  D. Toll,et al.  BEHAVIOR OF GRAVELY SAND USING CRITICAL STATE CONCEPTS , 2005 .