中南大学学报（自然科学版）Issue(5)：1826-1831,6.DOI:10.11817/j.issn.1672-7207.2015.05.034
红黏土与混凝土接触面剪切特性试验研究
Experimental research on shearing properties of interface between red clay and concrete
摘要
Abstract
The mechanical behaviors of interface between red clay and concrete were investigated by unidirectional direct shear tests under different normal stress conditions and different roughnesses. The stress, strain and failure modes of interface were analyzed according to the test. The results show that with the increase of roughness, shear strength of the structure surface and residual stress become larger, cohesion increases and the friction angle decreases increasingly close to the friction angle of the soil. Normal displacement has certain shear shrinkage in the initial stages, and then becomes shear dilation during the shearing process. The rate of shear contraction becomes larger with the increase of normal stress or roughness of contact surface, the rate of shear dilation also becomes larger as the roughness of contact surface increases, while the dilatancy rate is almost the same when the normal stress increases.关键词
红黏土/接触面/粗糙度/大型直剪试验Key words
red clay/interface/roughness/large scale direct shear test分类
建筑与水利引用本文复制引用
石熊,张家生,刘蓓,孟飞,邓国栋..红黏土与混凝土接触面剪切特性试验研究[J].中南大学学报（自然科学版）,2015,(5):1826-1831,6.基金项目
国家自然科学基金资助项目(51378514)；高速铁路建造技术国家工程实验室基金资助项目(2008G031-Q)@@@@(Project(51378514) supported by the National Natural Science Foundation of China （51378514）
Project(2008G031-Q) supported by High Speed Railway Construction of Technology National Engineering Laboratory) （2008G031-Q）
