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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第13卷    第9期    总第78期    2016年9月

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文章编号:1672-7029(2016)09-1711-08
公路膨胀土分级标准的修正及分级模型的建立与实践
谢东海1,2,赵伏军1,2 ,刘泽3

(1. 湖南科技大学 能源与安全工程学院,湖南 湘潭 411201;
2. 煤矿安全开采湖南省重点实验室,湖南 湘潭 411201;
3.湖南科技大学 岩土工程研究所,湖南 湘潭 411201
)

摘 要: 应用粗集理论对《公路工程地质勘探规程》(JTG C20-2011)建议的膨胀土判别与分级标准进行分析,其中自由膨胀率和标准吸湿含水率的权重分别为0.628和0.372,塑性指数对分级结果无影响。建议按权重利用自由膨胀率和标准吸湿含水率两个指标对膨胀土进行分级;且建立膨胀土的分级标准和分级模型,通过对皖中地区膨胀土进行分级,验证结果表明:建立的膨胀土分级模型分级准确性较高,取得了较好工程实际效果。

 

关键字: 膨胀土;分级标准;标准吸湿含水率;自由膨胀率;塑性指数;权重;粗集理论

The comeeTom of classification standard and the tablishment and applicatiow of classificalion modcl modcl forthe hiyhway exparsiow soil
XIE Donghai1,2, ZHAO Fujun1,2 , LIU Ze3

1. School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;
2. Hunan Provincial Key Laboratory of Coal Mine Safety, Xiangtan 411201, China;
3. Institute of Geotechnical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

Abstract:Using rough set theory to analyze the criterion of judging and classification of expansive soil in highway engineering geological exploration (C20-2011 JTG), the weight of free expansion rate and moisture content of standard moisture content is 0.628 and 0.372 respectively. Suggestions according to the weight using free expansion ratio and the standard moisture absorption water content of two indexes of expansive soil classification; and establishment of expansive soil classification standard and classification model, through the classification of expansive soil in the middle area of Anhui Province. The test results show that the establishment of expansive soil classification model classification accuracy higher, achieved good practical effect.

 

Key words: expansive soil; classification standard; standard moisture content of moisture;free expansion ratio;plastic index;weight;rough set theory

ISSN 1672-7029
CN 43-1423/U

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