| 节理峰值剪切位移及其影响因素分析 |
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| 引用本文： | 夏才初,唐志成,宋英龙,刘远明. 节理峰值剪切位移及其影响因素分析[J]. 岩土力学, 2011, 32(6): 1654-1658 |
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| 作者姓名： | 夏才初 唐志成 宋英龙 刘远明 |
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| 作者单位： | 1. 同济大学 岩土及地下工程教育部重点实验室，上海 200092；2. 同济大学 地下建筑与工程系，上海 200092； 3. 贵州大学 土木建筑工程学院，贵阳 550003 |
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| 摘 要： | 根据Barton-Bandis节理峰值剪切强度准则，分析了节理峰值剪切位移与法向应力之间的变化关系，并以此为基础总结了Barton峰值剪切位移公式的不足。通过室内直剪试验验证了节理粗糙度与法向应力是影响结构面峰值剪切位移的两个主要因素。试验结果表明，峰值剪切位移与节理粗糙度成反变化关系，与法向应力成正变化关系。建立了考虑节理粗糙度与法向应力的节理峰值剪切位移计算新公式。克服了Barton经验公式只考虑节理粗糙度，而不考虑法向应力作用的局限。新公式能很好地拟合试验数据，表明其合理性。
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| 关 键 词： | 岩石力学 节理 峰值剪切位移 直剪试验 |
| 收稿时间： | 2010-09-10 |
Analysis of relationship between joint peak shear displacement and its influence factors |
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| XIA Cai-chu,TANG Zhi-cheng,SONG Ying-long,LIU Yuan-ming. Analysis of relationship between joint peak shear displacement and its influence factors[J]. Rock and Soil Mechanics, 2011, 32(6): 1654-1658 |
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| Authors: | XIA Cai-chu TANG Zhi-cheng SONG Ying-long LIU Yuan-ming |
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| Affiliation: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. School of Civil Engineering and Architecture, Guizhou University, Guiyang 550003, China |
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| Abstract: | According to Barton-Bandis joint peak shear strength criterion,relationship between peak shear displacement and normal stress is analyzed;and the limitations of Barton's formula of peak shear displacement are summarized.It is verified through direct shear tests in which joint roughness and normal stress are the two major factors influencing joint shear displacement.The results show that there is a negative relationship between peak shear displacement and joint roughness but a positive relationship between p... |
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| Keywords: | rock mechanics joint peak shear displacement direct shear test |
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