Experimental Study on Shear Strength of Unsaturated Loess Based on Different Water Content in Xining Area

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Guibo, Bao^1 ; Hui, Li^1 ; Yu, Zhang^1 ; Wuyu, Zhang^1 ; Ningshan, Jiang^1

Civil Engineering School, Qinghai University, Qinghai, China^1

关键词: Different water contents;    Foundation pit support;    Number of factors;    Shear strength parameters;    Strength parameters;    Unsaturated loess;    Unsaturated soil;    Unsaturated soil mechanics;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/3/032018/pdf
DOI  :  10.1088/1755-1315/153/3/032018

来源: IOP

【 摘 要 】

Today, the study of shear strength of unsaturated soils has become a hot topic in unsaturated soil mechanics research. There are any number of factors affecting the strength of unsaturated soils. Among these factors, the moisture content has the most significant effect on the shear strength. In this paper, unsaturated loess in Xining is taken as the research object, the triaxial test without consolidation and undrain is used to determine the shear strength and its parameters under the condition of different water content, then the relationship between unsaturated loess' water content and shear strength parameters is explored, and curve fitting is performed. The relevantily approximate mathematics formulas are obtained. The study can provide strength parameter for slope stability and foundation pit support in Xining.