岩土工程学报2017，Vol.39Issue(3)：436-443,8.DOI:10.11779/CJGE201703006
不同黏性土的残余强度及其抗剪强度指标特性研究
Experimental study on residual strength and index of shear strength characteristics of different clay soils
摘要
Abstract
Using the ring shear apparatus, the variation rules of residual strength of 17 saturated claysoil samples with different plasticity indices under different consolidation conditions are studied. The influences of current normal stress, over-consolidation ratio, plastic index and multistage shear mode on the residual strength are analyzed. The variation of shear strength index with different plasticity indices under large deformation and the corresponding practical formula are investigated. The test results show that with the increase of the current normal stress, the residual strength increases. The over-consolidation ratio does not have a significant impact on the residual strength. With the increase of the plasticity index, the residual strength reduces gradually. Under the small stress level the residual strength is nonlinear. Under large deformation, the residual internal friction angle increases while the plasticity index decreases. Finally, the formula for the relation between the residual internal friction angle and the plasticity index is proposed.关键词
残余强度/塑性指数/超固结比/残余内摩擦角Key words
residual strength/plasticity index/over-consolidation ratio/residuel internal friction angle分类
建筑与水利引用本文复制引用
许成顺,王馨,杜修力,戴福初,王国盛,高岩..不同黏性土的残余强度及其抗剪强度指标特性研究[J].岩土工程学报,2017,39(3):436-443,8.基金项目
国家重点基础研究发展计划(" 973 " 计划)项目(2011CCB13600) （" 973 " 计划）
国家自然科学基金项目(51278015) （51278015）
