岩土力学2013，Vol.34Issue(3)：679-684,6.
基于真三轴试验的黄土结构性变化规律研究
Research on change structural characteristics of loess based on true triaxial tests
摘要
Abstract
Based on the theory of comprehensive structure potential, the stress-strain relations of intact loess, remolded loess and saturated loess have been researched by independent developed true triaxial apparatus. It has been reflected that the relationship between stress ratio structure parameter and generalized shear strain along with consolidation pressure and stress path. The mathematical model has been established. Meanwhile, the reliability of true triaxial apparatus and stress ratio structure parameter has been validated. It is shown that the stress-strain relations have distinct difference for different soil states. The stress-strain relations tend to the characteristic of strain softening or hyperbola for the intact loess. The stress-strain relations tend to the characteristic of hyperbola and strain hardening for the remolded or saturated loess. The soil structure reduces gradually with the increasing of shear deformation and water content. The consolidation pressure σc and intermediate principal stress patameter b are the influential factors for soil structure. The simulation formula can accurately reflect the theory and experimentation. It is convenient for application in projects.关键词
综合结构势/结构性参数/真三轴/应力路径Key words
theory of comprehensive structure potential/ structure parameter/ true triaxial/ stress path分类
建筑与水利引用本文复制引用
邓国华,邵生俊..基于真三轴试验的黄土结构性变化规律研究[J].岩土力学,2013,34(3):679-684,6.基金项目
国家自然科学基金项目(No.10872161). （No.10872161）
