| 基于分形理论的土体级配评价方法及应用 |
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| 引用本文： | 邓钟尉,彭卫平.基于分形理论的土体级配评价方法及应用[J].路基工程,2022,0(5):26-29. |
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| 作者姓名： | 邓钟尉 彭卫平 |
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| 作者单位： | 1.广州市城市规划勘测设计研究院 ，广州 510060 |
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| 基金项目： | 广东省重点领域研发计划项目（205241900002） |
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| 摘 要： | 为优化《土工试验方法标准》中的土体级配评价方法，探索应用分形理论研究路基工程中土颗粒级配评价方法。基于土体的自相似性特征，应用分形理论，建立不均匀系数Cu、曲率系数Cc与分维系数D之间的函数关系，通过土体分维系数D来评价土体级配特征，为土体级配特征研究提供了一种新方法；通过工程案例应用，验证了评价方法的可靠性。由于分维系数概念清晰，物理意义明确，可通过颗粒分析试验获得，便于在工程上推广应用。
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| 关 键 词： | 路基工程 土体级配评价 分形理论 土颗粒级配 分维系数 |
| 收稿时间： | 2021-11-15 |
Evaluation Method and Application of Soil Gradation Based on Fractal Theory |
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| Abstract: | In order to optimize the evaluation method of soil gradation in Standard for Geotechnical Testing Method, the fractal theory has been explored to study the evaluation method of soil particle gradation in subgrade engineering. Based on self-similarity characteristics of soil, through the application of fractal theory to establish the functional relationship between the non-uniform coefficient of Cu and curvature coefficient of Cc and fractal dimension coefficient D, the soil gradation characteristics can be evaluated by the soil fractal dimension coefficient D which provides a new method for soil grading characteristics research. Because of its clear concept and physical significance, the fractional maintenance number can be obtained through particle analysis and test, which is convenient to be popularized and applied in engineering. |
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