Study on the initial structural effects of particle breakage in coarse-grained soils
Improved directshear test to determine the parameters of coarse-grained soil under initial structural conditions.The aim to investigate the impact of the comprehensive initial structural characteristics Y0 of coarse-grained soil on the extent of particle breakage.The structural characteristics of coarse-grained soil direct shear were obtained using image recognition technology initial structures.,discrete element numerical model that accurately represent the particle break.The results:(1)degree of different particle size influenced by their content,the overall degree mainly determined by the presence of coarse particles(2)degree of particle breakage increase linearly with normal stress,while relationship between the weighted separation(Bd)and the comprehensive parameter(Y0).(3)The greater the characteristic strength under the same normal stress,the smaller the difference between different initial structures.A functional relationship established between the characteristic strength of the particles(σc)and the curve of the weighted cleavage(Bd).(4)the test resultsa predict the degree of coarse-grained soil the initial verified literature.
initial structureparticle breakagecoarsegrained soilquantitative indexvisual directshear test
万方数据
维普
