中南大学学报（自然科学版）2017，Vol.48Issue(9)：2458-2464,7.DOI:10.11817/j.issn.1672-7207.2017.09.026
红黏土-混凝土结构接触面残余强度特性试验研究
Experimental research on residual shear strength of red clay-concrete structure interface
摘要
Abstract
A series of large direct shear tests were carried out to investigate the effect of roughness on residual shear strength of red clay-concrete interface. The results show that the shear stress-shear displacement curves are characterized as strain softening and the residual shear strength increases with the increase of the surface roughness. The roughness on residual strength decreases with the increase of the magnitude of normal stress. The residual friction coefficient of interface (i.e. residual strength divides by normal stress) increases with the increase of roughness and eventually approaches internal friction coefficient of soil, indicating the internal shear failure of soil occures. The residual cohesion of interface dramatically increases while the residual friction angle increases as a results of the increase of roughness.关键词
粗糙度/结构接触面/大型直剪试验/残余强度Key words
roughness/structure interface/large scale direct shear test/residual strength分类
建筑与水利引用本文复制引用
成浩,陈晓斌,张家生,李键,张标..红黏土-混凝土结构接触面残余强度特性试验研究[J].中南大学学报（自然科学版）,2017,48(9):2458-2464,7.基金项目
国家自然科学基金资助项目(51378514) （51378514）
昆明市科技计划项目(2014-01-A-G-02-3049) （2014-01-A-G-02-3049）
中南大学研究生创新项目(2016zzts077) (Project(51378514) supported by the National Natural Science Foundation of China （2016zzts077）
Project(2014-01-A-G-02-3049) supported by the Science Plan of Kunming Municipality （2014-01-A-G-02-3049）
Project(2016zzts077) supported by Graduate Student Innovation Foundation of Central South University) （2016zzts077）
