Relationship Between Shear Strength and Fabric of Unsaturated Granular Soils

摘要：

The relationship between shear strength and fabric of unsaturated pendular-state granular soils is established based on micromechanics, and some conclusions can be made. The two internal frictional angles φ and φ m at critical state are all strength parameters related to the frictional characteristic of the interparticle contacts, which is intrinsic properties of the soil, the former is the sum of three contributions representing anisotropies in contact orientations, average normal and tangential forces, and the latter is directly related to the contact normals and independent of capillary stress. Finally, DEM numerical simulations of triaxial compression tests at different degrees of saturation in pendular state are used to verify the conclusion.

关键词： unsaturated granular soils pendular state fabric, shear strength internal friction angle anisotropy

作者: ZHANG Weihua ZHAO Chenggang

作者单位: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 2141-2145

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）