| 一种土颗粒体微结构特征的描述方法 |
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| 引用本文： | 李顺群,柴寿喜,王英红.一种土颗粒体微结构特征的描述方法[J].岩土工程技术,2009,23(6):313-315,320. |
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| 作者姓名： | 李顺群 柴寿喜 王英红 |
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| 作者单位： | 1. 天津城市建设学院土木工程系,天津,300384;天津市软土特性与工程环境重点实验室,天津,300384
2. 天津城市建设学院电子与信息工程系,天津,300384 |
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| 基金项目： | 中国博士后科学基金资助项目，天津市高等学校科技发展基金计划项目 |
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| 摘 要： | 在前期工作基础上，采用相关分析和主成分分析方法，对三种土的SEM照片特征块原始微结构参数进行了相关分析和主成分分析。研究表明，与域微结构参数一样，特征块微结构参数间也存在“严重”的“信息重复”现象，可以用较少主成分反映全部原始特征块微结构参数的主要信息，从而达到降维目的。
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| 关 键 词： | 特征块微结构 SEM图像 相关分析 主成分分析 降维 |
A Method to Describe Characteristics Feature of Microstructure for Soil |
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| Li Shunqun,Chai Shouxi,Wang Yinghong.A Method to Describe Characteristics Feature of Microstructure for Soil[J].Geotechnical Engineering Technique,2009,23(6):313-315,320. |
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| Authors: | Li Shunqun Chai Shouxi Wang Yinghong |
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| Institution: | Li Shunqun Chai Shouxi Wang Yinghong (1. Department of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, china; 2. Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, china;3 Department of Electron and Information Engineering,Tianjin Institute of Urban Construction, Tianjin 300384, china) |
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| Abstract: | The techniques of correlation analysis and principal component analysis are utilized to study leature microstructure parameters extracted from SEM photos of the three kinds of soil. The study shows that message superposition is clear and severe among microstructure parameters for feature analysis, and that is same for field analysis. Therefore, it is reasonable to construct a lower parameter matrix to substitute the original higher parameter matrix for microstructure. The minority representative principal components can approximately synthesize the overall meaning of microstructure according to the desired value of contribution by the method of principal component analysis, and this makes extensive use of mierostructure theory in soil mechanics expediently and potentially. |
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| Keywords: | feature micro-structure SEM photo correlation analysis principal component analysis dimensionality reduction |
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