| 铁路路基戈壁土填料级配及压实特性分析 |
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| 引用本文： | 杨斌,赖国泉,杨有海,黄大维.铁路路基戈壁土填料级配及压实特性分析[J].中国铁道科学,2011,32(1). |
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| 作者姓名： | 杨斌 赖国泉 杨有海 黄大维 |
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| 作者单位： | 1. 西南交通大学,土木工程学院,四川,成都,610031;兰新铁路新疆有限公司,新疆,乌鲁木齐,830011
2. 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 基金项目： | 铁道部科技研究开发计划项目(2009G020-C) |
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| 摘 要： | 通过对新疆戈壁地区某铁路路基试验段各工点填料的颗粒分析试验、重型击实试验、振动击实试验以及现场的压实质量K30检测,分析戈壁粗粒土的颗粒组成、颗粒级配、粗颗粒含量及细颗粒含量对压实效果的影响。分析表明:新疆戈壁地区填料主要为不均匀级配不连续土,大部分属于B组填料,且由东向西由细变粗,属于缺级粗粒土,填料中1～2 mm粒径含量相对偏少,是造成填料级配不良的因素之一;填料中粗颗粒含量及细粒含量对最大干密度的影响显著,且存在着良好的线性关系。运用多元线性回归,建立了填料的颗粒级配特征粒径与最大干密度的回归方程。各工点现场K30检测结果分析表明,当填料的级配处在泰勒理想级配范围内,填料中粗颗粒含量在60%～70%左右时,压实效果良好。
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| 关 键 词： | 铁路 路基 戈壁土 填料 级配 干密度 级配特征函数 泰勒级配 |
Analysis on the Grading and the Compaction Characteristics of the Gobi Soil Filling for Railway Subgrade |
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| YANG Bin,LAI Guoquan,YANG Youhai,HUANG Dawei.Analysis on the Grading and the Compaction Characteristics of the Gobi Soil Filling for Railway Subgrade[J].China Railway Science,2011,32(1). |
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| Authors: | YANG Bin LAI Guoquan YANG Youhai HUANG Dawei |
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| Affiliation: | YANG Bin1,2,LAI Guoquan3,YANG Youhai3,HUANG Dawei3(1.School of Civil Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China,2.Xinjiang Limited Company of Lan-Xin Railway,Xinjiang Urumchi 830011,3.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China) |
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| Abstract: | The particle size analysis test,heavy compaction test,the vibrated compaction test and the field detection of the compaction quality K30 were carried out on the filling materials of each working site in the test section of a certain railway subgrade in Xingjiang Gobi area.The influences of such factors of Gobi soil as the particle composition,particle grading,the content of the coarse particle and the content of the fine particles on the compaction effect were analyzed.The analyses show that the filling mat... |
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| Keywords: | Railway Subgrade Gobi soil Filling Grading Dry density Characteristic function of grading Tailor grading |
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