岩土工程学报2016，Vol.38Issue(11)：2026-2032,7.DOI:10.11779/CJGE201611012
横观各向同性砂土的强度准则
New strength criterion for sand with cross-anisotropy
摘要
Abstract
It is aimed to develop a strength criterion complying with the principle of objectivity for sand with cross-anisotropy. First, how the peak strength of anisotropic granular material varies with the loading direction is observed through some typical tests. Then, the mechanism of the strength mobilizing is analyzed, and a novel dimensionless anisotropy parameter Λ(σ, F), which measures the relative direction of stress tensor and fabric tensor, is defined. Using this parameter, the spatial mobilized plane (SMP) criterion is extended to describe the strength of sand with cross-anisotropy. If the position of the depositional plane is known, there are only two parameters, kf0 and k, to be determined in the criterion. They can be both easily determined by two experiments with different loading directions. The essential effectiveness of the new criterion is confirmed by the experimental facts and numerical modeling.关键词
横观各向同性/砂土/强度准则Key words
cross-anisotropy/sand/strength criterion分类
建筑与水利引用本文复制引用
曹威,王睿,张建民..横观各向同性砂土的强度准则[J].岩土工程学报,2016,38(11):2026-2032,7.基金项目
国家自然科学基金项目（51038007，51079074）；铁道部科技研究开发计划重点课题 （）
