水利水电科技进展Issue(4)：24-28,5.DOI:10.3880/j.issn.10067647.2014.04.006
基于大三轴试验的胶凝堆石料力学特性
Mechanical properties of CSG material based on large triaxial tests
摘要
Abstract
In order to study the mechanical property of cement sand and gravel ( CSG) dam material, a large triaxial test was conducted to obtain the relation between different cement content and different confining pressure on the stress-strain and the relation between the volumetric strain and axial strain. Additionally, we also analyze the influence on the shear dilatation of CSG dam material of different cement content and different confining pressure. The results show that when the confining pressure is the same, with the increase of cement content, the peak strength and residual strength will increase while the peak axial strain will decrease. Furthermore, when the cement content is the same, with the confining pressure increasing, peak strength, residual strength and peak axial strain will increase. Different degrees of the shear dilatation of CSG material are showed because of the influence of different cement content and different confining pressure, and when cement content is more, and confining pressure is less, the shear dilatation is more obvious.关键词
胶凝堆石料/大三轴试验/强度特性/体积增量比/剪胀特性Key words
CSG material/large triaxial test/strength/increment ratio of volume/the shear dilatation分类
建筑与水利引用本文复制引用
杨杰,蔡新,宋小波..基于大三轴试验的胶凝堆石料力学特性[J].水利水电科技进展,2014,(4):24-28,5.基金项目
国家自然科学基金(51179061) （51179061）
高等学校博士学科点专项科研基金(博士生导师类)(20100094110014) （博士生导师类）
国家“十二五”科技支撑计划(2012BAD10B02) （2012BAD10B02）
