| 考虑细观结构变化的原状Q3黄土变形和强度特性 |
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| 引用本文： | 李加贵,陈正汉,黄雪峰.考虑细观结构变化的原状Q3黄土变形和强度特性[J].后勤工程学院学报,2010,26(2):5-10,55. |
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| 作者姓名： | 李加贵 陈正汉 黄雪峰 |
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| 作者单位： | 后勤工程学院,军事建筑工程系,重庆401311 |
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| 摘 要： | 为研究结构性对非饱和原状Q3黄土变形和强度特性的影响，做了12个非饱和原状Q3黄土的CT-三轴侧向卸荷试验。在试验剪切过程中，利用CT机对试样进行跟踪扫描，共得到168张CT图像。基于试验数据建立了细观结构参数，并利用该参数来反映非饱和原状Q3黄土的变形和强度特性，从而得到能反映细观结构性影响的非线性应力-应变关系以及摩尔-库伦强度公式。
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| 关 键 词： | 非饱和原状Q3 黄土 CT-三轴侧向卸荷试验 细观结构参数 应力-应变关系 强度公式 |
Stress-strain Relationship and Strength Formula of Unsaturated Original Q3 Loess with Meso-structural Parameter |
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| LI Jia-gui,CHEN Zheng-han,HUANG Xue-feng.Stress-strain Relationship and Strength Formula of Unsaturated Original Q3 Loess with Meso-structural Parameter[J].Journal of Logistical Engineering University,2010,26(2):5-10,55. |
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| Authors: | LI Jia-gui CHEN Zheng-han HUANG Xue-feng |
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| Institution: | ( Dept. of Architecture ＆ Civil Engineering, LEU, Chongqing 401311, China) |
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| Abstract: | In order to study the influence of soil structure to the stress-strain relationship and strength, CT - triaxial test with unloading confining pressure are carried out by making use of 12 unsaturated original Q3 loess samples. During the test,two sections of every sample are scanned by computer tomography, and 168 images are gained. Based on the test data, a structural parameter is put forward in this paper. Then, the structural parameter is used to research the stress-strain relationship and strength criterion of unsaturated original Q3 loess. At same time, the non-linear stress-strain relationship and the strength criterion of Mohr-Coulomb which are comprised of the meso-structural parameter is established. |
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| Keywords: | unsaturated original Q3 loess CT- triaxial test with unloading confining pressure meso-structural parameter stress-strain relationship strength formula |
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