单试件重复加载法测定岩石残余强度指标

邓华锋; 张恒宾; 李建林; 段玲玲; 支永艳; 潘登

doi:10.11779/CJGE201902013

单试件重复加载法测定岩石残余强度指标 English Version

三峡库区地质灾害教育部重点实验室（三峡大学）,湖北宜昌 443002

基金项目: 国家自然科学基金项目（51679127,51439003）; 湖北省技术创新专项重大项目（2017ACA189）; 三峡库区地质灾害教育部重点实验室（三峡大学）开放基金项目（2015KDZ04）; 三峡大学2015级硕士学位论文培优基金项目（2017YPY018）

详细信息

作者简介:
邓华锋(1979- ),男,博士,教授,主要从岩土工程方面的教学与研究工作。E-mail: dhf8010@ctgu.edu.cn。

通讯作者:
邓华锋，E-mail：dhf8010@ctgu.edu.cn

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出版历程
- 收稿日期: 2017-12-14
- 发布日期: 2019-02-24

Single specimen repeated loading method for determination of residual strength parameters of rock

Key Laboratory of Geological Hazards in Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, Hubei Province, Yichang 443002, China

摘要

摘要: 在以往单试件法基础上,结合岩石三轴压缩试验残余阶段的变形特点,研究提出了一种单试件重复加载法,测定岩石残余阶段的强度指标。研究结果表明：①常规多试件三轴压缩试验和单试件重复加载试验结果对比分析发现,岩样的残余强度主要由加载时的围压控制,与初始加载破坏的围压关系不明显;②单试件重复加载法得到的岩样残余阶段的强度指标与常规三轴压缩试验得到的结果基本一致,而且试验结果离散性明显较小,说明该方法是合理可行的;③为了更好地运用本文所提出的单试件重复加载法,建议在重复加载时尽量选择较大的围压值,从而保证重复加载过程中岩样的剪切破坏面处于紧密的接触状态,以更好地反映岩样在残余阶段的强度特征。
- 单试件法 /
- 重复加载 /
- 残余强度 /
- 离散性

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参考文献(18)

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