| 地震边坡岩土体破坏特征探讨 |
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| 引用本文： | 段建,言志信,郭锐剑,刘子振.地震边坡岩土体破坏特征探讨[J].煤炭学报,2011,36(10):1642-1646. |
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| 作者姓名： | 段建 言志信 郭锐剑 刘子振 |
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| 作者单位： | 1.兰州大学 土木工程与力学学院，甘肃 兰州 730000；;
2.西部灾害与环境力学教育部重点实验室，甘肃 兰州 730000 |
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| 基金项目： | 兰州大学中央高校基本科研业务费专项资金资助项目(lzujbky-2010-19); 高等学校博士学科点专项科研基金资助项目(20090211110016); 甘肃省科技计划资助项目(096RJZA048) |
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| 摘 要： | 通过理论分析与FLAC数值模拟技术，分别探讨了地震边坡岩土体应力状态及其破坏特征。研究发现：地震荷载作用下，边坡坡顶单元易产生拉应力，发生拉破坏，其最小主应力方向与水平方向几乎一致，致使坡顶常表现为陡峻拉裂面；底部单元主应力方向发生改变，处于双向受压状态，发生剪切破坏；边坡动力失稳是因拉剪滑面贯通所致。
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| 关 键 词： | 地震边坡 张拉破坏 剪切破坏 拉剪滑面 |
| 收稿时间： | 2011-01-03 |
Discussion of soil-rock mass failure characteristics of slope under earthquake |
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| DUAN Jian,YAN Zhi-xin,GUO Rui-jian,LIU Zi-zhen.Discussion of soil-rock mass failure characteristics of slope under earthquake[J].Journal of China Coal Society,2011,36(10):1642-1646. |
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| Authors: | DUAN Jian YAN Zhi-xin GUO Rui-jian LIU Zi-zhen |
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| Affiliation: | DUAN Jian1,2,YAN Zhi-xin1,GUO Rui-jian1,LIU Zi-zhen1,3(1.Shool of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China,2.Key Laboratory of Mechanics on Disaster and Environment in Western China,Ministry of Education,3.School of Civil Engineering and Architecture,Taizhou University,Taizhou 318000,China) |
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| Abstract: | The stress state and failure characteristics of slope soil-rock mass under earthquake were discussed by the methods of theoretical analysis and FLAC numerical simulation techniques.It is found that the top soil-rock mass elements of slope are easy to produce tensile stress,and occur tensile failure under earthquake load,the direction of minimum principal stress is consistent with horizontal direction,which results in formation of steep fracture surface.The principal stress direction of the bottom soil-rock ... |
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| Keywords: | slope under earthquake tension failure shear failure tension-shear fracture surface |
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