| 路基原状黄土细观结构损伤规律的CT检测分析 |
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| 引用本文： | 倪万魁,杨泓全,王朝阳.路基原状黄土细观结构损伤规律的CT检测分析[J].公路交通科技,2005(Z1). |
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| 作者姓名： | 倪万魁 杨泓全 王朝阳 |
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| 作者单位： | 长安大学地质工程与测绘工程学院 陕西西安710054
(倪万魁，杨泓全)，长安大学地质工程与测绘工程学院 陕西西安710054(王朝阳) |
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| 基金项目： | 交通部西部交通科技项目(200131800020) |
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| 摘 要： | 利用可同步进行CT扫描的三轴仪,对路基原状黄土进行了三轴剪切试验,从CT数和CT图像两方面分析了不同受力过程中黄土细观结构的变化。结果表明,随着压力增大,土体中的大孔隙逐渐闭合,试样平均密度在增大;当土颗粒产生剪切位移时,土样发生剪胀,土体的原始结构完全被破坏。
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| 关 键 词： | 原状黄土 细观结构 CT数 损伤检测 |
Analysis on Microstructure Damage Rules of Undisturbed Subgrade Loess Monitored by CT |
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| NI Wan-kui,YANG Hong-quan,WANG Zhao-yang.Analysis on Microstructure Damage Rules of Undisturbed Subgrade Loess Monitored by CT[J].Journal of Highway and Transportation Research and Development,2005(Z1). |
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| Authors: | NI Wan-kui YANG Hong-quan WANG Zhao-yang |
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| Abstract: | Triaxial shear test,of which can do CT scanning at the same time,is conducted to the undisturbed subgrade loess.The change of microstructure of loess is analyzed from CT numbers and CT images.It is found that the big pores in the loess sample are gradually closed,with the increase of the stress,and the average density of the soil is raised.The original structure of soil sample is completely destructed while the displacement of the soil grains are produced,by means of the dilatation of the soil sample. |
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| Keywords: | Undisturbed loess Microstructure CT numbers Damage monitoring |
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