ABSTRACT
Based on the theory of Particle Flow Code (PFC), the biaxial test and shear-band evolution of sand are simulated in the paper. The macro stress–strain relation of sand is reproduced by PFC model. The variation rules of macro properties of the sand sample with meso-parameters, such as particle size and friction coefficient of particle, are studied in the paper. Comparing the results of sand shear-band in lab test with PFC model, and studying the formation and extension process of the shear-band as meso-parameters, such as particle size, stiffness and coefficient, are varied. It is shown that the mechanism of sand shear-band can be simulated perfectly by PFC model.
