| 散粒体材料间接触面力学特性的单剪试验研究 |
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| 引用本文： | 张丙印,付建,李全明.散粒体材料间接触面力学特性的单剪试验研究[J].岩土力学,2004,25(10):1522-1526. |
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| 作者姓名： | 张丙印 付建 李全明 |
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| 作者单位： | 清华大学 水利水电工程系 岩土工程研究所，北京 100084 |
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| 摘 要： | 在清华大学土与结构接触面循环加载剪切试验机的基础上, 研制了可进行两种散粒体间接触面试验的叠环式单剪试验系统，并对糯扎渡高心墙堆石坝坝料的接触特性进行了系统的试验研究。结果表明，两种散粒体材料间接触面的强度包线为其单相材料强度下的包线。当达到破坏强度后，在接触界面附近会产生集中的“刚塑性”接触面剪切变形，其位置发生在强度最薄弱处。两种散粒体间的接触变形特性可通过刚塑性模型来描述。
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| 关 键 词： | 散粒体 接触面 单剪试验 刚塑性模型 |
| 文章编号： | 1000-7598-(2004)10-1522-05 |
| 收稿时间： | 2003-06-02 |
| 修稿时间： | 2003年6月2日 |
Experimental study on mechanical behavior of interface between two granular materials |
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| ZHANG Bing-yin,FU Jian,LI Quan-ming.Experimental study on mechanical behavior of interface between two granular materials[J].Rock and Soil Mechanics,2004,25(10):1522-1526. |
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| Authors: | ZHANG Bing-yin FU Jian LI Quan-ming |
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| Institution: | Department of Hydraulic Engineering，Tsinghua University，Beijing 100084，China |
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| Abstract: | On the basis of the cyclic shear apparatus for soil-structure interface in Tsinghua University, a laminar-ring simple shear apparatus for the study of the mechanical behavior of interface between granular materials is developed. A series of experiments are conducted with the embankment materials used in Nuozhadu high earth core dam. It is confirmed that the shear strength envelope of the interface is the lower shear strength envelope of the two granular materials. When the failure strength is reached, concentrated rigid plastic shear deformation takes place in an area near the interface with the lowest strength. The rigid-plastic model can be used to simulate the deformation behavior of the interface between two granular materials. |
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| Keywords: | granular material interface simple shear test rigid-plastic model |
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