| 东北地区粉质黏土湿陷系数与物理性质指标的相关性 |
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| 引用本文： | 尧俊凯,陈锋,闫宏业,蔡德钩,张千里.东北地区粉质黏土湿陷系数与物理性质指标的相关性[J].铁道建筑,2019(2):50-53. |
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| 作者姓名： | 尧俊凯 陈锋 闫宏业 蔡德钩 张千里 |
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| 作者单位： | 中国铁道科学研究院;中国铁道科学研究院集团有限公司铁道建筑研究所 |
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| 基金项目： | 国家自然科学基金(51608533);中国铁道科学研究院基金(2016YJ023) |
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| 摘 要： | 东北阜新地区部分地基表层粉质黏土具有湿陷性。在统计湿陷性粉质黏土的物理性质指标与湿陷系数的基础上,分析了两者之间的相关性。结果表明:湿陷性粉质黏土天然状态下具有干密度低、孔隙比大、饱和度低的特点,其湿陷系数与孔隙比呈正相关关系,随饱和度降低而增大;孔隙比大于0. 6且饱和度低于60%的粉质黏土具有湿陷性;建立了湿陷系数与孔隙比、饱和度的二元线性回归方程,可供类似区域粉质黏土勘察参考。
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| 关 键 词： | 湿陷性土 粉质黏土 物理性质指标 相关性分析 孔隙比 饱和度 |
Correlation Between Collapsibility Coefficient and Physical Properties of Silty Clay in Northeast China |
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| YAO Junkai,CHEN Feng,YAN Hongye,CAI Degou,ZHANG Qianli.Correlation Between Collapsibility Coefficient and Physical Properties of Silty Clay in Northeast China[J].Railway Engineering,2019(2):50-53. |
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| Authors: | YAO Junkai CHEN Feng YAN Hongye CAI Degou ZHANG Qianli |
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| Institution: | (China Academy of Railway Sciences,Beijing 100081,China;Railway Engineering Research Institute,China Academy ofRailway Sciences Group Co. Ltd. ,Beijing 100081,China) |
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| Abstract: | The silty clay on the surface of some foundations in Fuxin area of Northeast China is collapsible.On the basis of statistics of physical properties and collapsibility coefficient of collapsible silty clay,the correlation between them was analyzed.The results show that the collapsible silty clay has the characteristics of low dry density,large void ratio and low saturation in natural state,and its collapsibility coefficient is positively correlated with void ratio,and increases with the decrease of saturation.The silty clay with void ratio greater than 0.6 and saturation less than 60%has collapsibility.The binary linear regression equation of collapsibility coefficient with void ratio and saturation is established,which can be used as a reference for the investigation of silty clay in similar areas. |
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| Keywords: | Collapsible soil Silty clay Physical property Correlation analysis Void ratio Saturation |
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