岩土工程学报2012，Vol.34Issue(6)：1102-1108,7.
砂土中主应力与内摩擦角统一关系研究
Unified relationship between intermediate principal stress and internal friction angle for sand
摘要
Abstract
An anisotropic failure criterion is proposed to present anisotropic failure behaviors for different kinds of sand, which can be employed to simulate both isotropic and anisotropic strength behaviors of granular materials. The model parameters can be determined by the strength ratios based on the triaxial compression and extension tests in different stress areas. Concepts and expressions are put forward for the generalized intermediate principal stress parameter and the generalized internal friction angle, respectively. The generalized expression of the internal friction angle influenced by the intermediate principal stress parameter is deduced based on the proposed anisotropic failure criterion. This generalized explicit expression is available for different soil strength criteria to establish the relationship between the internal friction angle and the intermediate principal stress parameter. Comparisons between simulations and test results show that this general expression of the internal friction angle can well reproduce the true triaxial test results of soils in all stress areas.关键词
各向异性/破坏准则/中主应力/强度/内摩擦角Key words
anisotropy/failure criterion/intermediate principal stress/strength/internal friction angle分类
建筑与水利引用本文复制引用
肖杨,刘汉龙,陈育民..砂土中主应力与内摩擦角统一关系研究[J].岩土工程学报,2012,34(6):1102-1108,7.基金项目
国家杰出青年科学基金项目（50825901）：国家自然科学基金委员会、二滩水电开发有限责任公司雅砻江水电开发联合研究基金项目 （）
国家留学基金项目（2010671026）：江苏省土木工程研究生科技创新基金资助,中央高校基本科研业务费专项资金资助 （）
江苏省普通高校研究生科研创新计划项目 （）
