| 地震作用下节理岩体的抗震稳定性分析 |
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| 引用本文： | 林永亮,李新星. 地震作用下节理岩体的抗震稳定性分析[J]. 长江科学院院报, 2008, 25(5): 103-106 |
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| 作者姓名： | 林永亮 李新星 |
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| 作者单位： | 河海大学岩土力学及堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程研究所,南京,210098;上海市隧道工程轨道交通设计研究院,上海,200070 |
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| 摘 要： | 基于统一强度理论和极限平衡原理，结合节理岩体的特点，提出一个能考虑岩体拉裂破坏及岩体种类等因素的边坡安全系数和永久位移的计算方法。初步分析了地震荷载作用下坡度、节理面倾角、拉裂深度、地震荷载及强度参数对抗震稳定性的影响。研究结果表明：随着中间主应力的发挥，边坡的安全系数相应增加，而永久变形明显地减小。在实际工程中，合理考虑中主应力效应的影响，能使岩土类材料的潜在强度得到充分发挥，也可间接地产生巨大的经济效益。
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| 关 键 词： | 节理岩体 拉裂破坏 永久位移；统一强度准则 |
Seismic Stability and Permanent Displacement of Joint Rock Slope |
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| LIN Yong-liang,LI Xin-xing. Seismic Stability and Permanent Displacement of Joint Rock Slope[J]. Journal of Yangtze River Scientific Research Institute, 2008, 25(5): 103-106 |
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| Authors: | LIN Yong-liang LI Xin-xing |
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| Affiliation: | LIN Yong-liang1,2,LI Xin-xing3(1.Key Laboratory o f Ministry of Education for Geomechanics , Embankment Engineering,HohaiUniversity,Nanjing 210098,China,2.Geotechnical Research Institute,Hohai University,3.Shanghai Tunnel Engineering , Rail Transit Design & Research Institute,Shanghai 200070,China) |
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| Abstract: | Earthquake effects are commonly considered in the stability analysis of rock slopes and other earth structures.The conventional approach is often based on the limit equilibrium method by Mohr-Coulomb or Hoek-Brown failure criterion.However,experimental data shows the rock failure doesn't keep to simplex criterion and it is influenced by the intermediate principal stress distinctly.A new method for evaluating seismic safety factor and permanent displacement of rock slopes is proposed according to the charact... |
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| Keywords: | joint rock tensile failure permanent displacement unified strength theory |
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