期刊
COMPUTERS AND GEOTECHNICS
卷 88, 期 -, 页码 182-198出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2017.03.015
关键词
Granite; Three non-coplanar holes; Strength; Crack coalescence; Stress field
类别
资金
- Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars [BK20150005]
- Fundamental Research Funds for the Central Universities [2015XKZD05]
In this study, uniaxial compression tests were conducted on granite specimens containing three non coplanar holes. The relationships between the stress, acoustic emission (AE) and crack evolution process were analyzed using AE measuring and photographic monitoring techniques. Particle flow code (PFC) was then used to simulate the strength failure behaviors of the specimens with three non-coplanar holes under uniaxially loading. Four typical crack coalescence patterns were identified, i.e., shear, mixed tensile and shear, and tensile. The crack evolution mechanisms around the pre-existing holes in the granite specimens were revealed by an analysis of the force and displacement fields. (C) 2017 Elsevier Ltd. All rights reserved.
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