| 裂隙性黄土的双参数二元介质模型 |
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| 引用本文： | 卢全中,彭建兵,王水林,周彬,王媛.裂隙性黄土的双参数二元介质模型[J].岩土工程学报,2012,34(5):893-898. |
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| 作者姓名： | 卢全中 彭建兵 王水林 周彬 王媛 |
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| 作者单位： | 1.长安大学西部矿产资源与地质工程教育部重点实验室，陕西 西安 710054; 2. 长安大学国土资源部岩土工程开放研究实验室，陕西 西安 710054; 3. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北 武汉 430071 |
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| 基金项目： | 国家自然科学基金重点项目(41130753);国土资源大调查项目(1212011120067);中国博士后科学基金项目(20090451090);中央高校基本科研业务费专项资金项目(CHD2011JC022);长安大学基础研究支持计划专项基金项目 |
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| 摘 要： | 裂隙性黄土可以看成是由胶结块和软弱带组成的非均质土，其变形破坏过程是土中胶结块和软弱带的变形、破损和连通过程。基于岩土破损力学理论建立了裂隙性黄土的双参数二元介质模型，并用三轴剪切试验结果进行了对比，结果显示该模型能计算模拟裂隙性黄土的不同变形阶段，并能反映裂隙性黄土的脆性破损和应变软化现象，说明岩土破损力学理论对裂隙性黄土具有较好的适应性。
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| 关 键 词： | 裂隙性黄土 双参数 二元介质模型 三轴试验 |
| 收稿时间： | 2012-06-25 |
Double-parameter binary-medium model for fissured loess |
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| LU Quan-zhong,PENG Jian-bing,WANG Shui-lin,ZHOU Bin,WANG Yuan.Double-parameter binary-medium model for fissured loess[J].Chinese Journal of Geotechnical Engineering,2012,34(5):893-898. |
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| Authors: | LU Quan-zhong PENG Jian-bing WANG Shui-lin ZHOU Bin WANG Yuan |
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| Affiliation: | 1. Key Laboratory of Western China’ s Mineral Resources and Geological Engineering, Ministry of Education, Chang’an University, Xi'an 710054, China; 2. Open Research Laboratory of Geotechnical Engineering ， Ministry of Land and Resources, Chang’an University, Xi'an 710054, China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | Fissured loess is regarded as a heterogeneous soil consisting of bonded blocks and weakened bands.The process of deformation failure of the fissured loess is the deformation,breakage and connection of the bonded blocks and weakened bands in loess.A double-parameter binary-medium model for fissured loess is proposed based on the breakage mechanics and is used to predict the behaviors of the fissured loess in triaxial shear tests.The comparison between prediction and experimental data demonstrates that the proposed model can satisfactorily simulate different deformation phases and reflect the brittle breakage and strain softening of the fissured loess. |
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| Keywords: | fissured loess double-parameter binary-medium model triaxial test |
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