| 客运专线路基压实检测指标的试验研究 |
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| 引用本文： | 和民锁,李亮,聂志红.客运专线路基压实检测指标的试验研究[J].铁道科学与工程学报,2009,6(6). |
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| 作者姓名： | 和民锁 李亮 聂志红 |
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| 作者单位： | 1. 中南大学土木建筑学院,湖南,长沙,410075;中国中铁一局集团有限公司,陕西,西安,710054
2. 中南大学土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 铁道部科技研究开发计划项目(2005K002-B-6) |
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| 摘 要： | 针对我国客运专线路基压实检测方法和检测指标过多,利用武广客运专线岳阳段2种典型填料的击实试验和现场4种检测方法的检测结果,对路基压实检测方法与检测指标进行分析.研究结果表明:对中、粗颗粒填料用统一的孔隙率来控制压实度具有不合理性,基床底层的28%和本体的31%的孔隙率要求与相应的压实度95%与92%不匹配;一次变形模量E(ι1)和地基系数K_(30)之间有较好的相关性,可用同一函数进行拟合,当K_(30)为150 MPa/m时,E_(ν1)约为35 MPa;建议完善路基压实检测方法,修正检测指标以保证路基压实质量,简化路基压实检测的程序.
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| 关 键 词： | 客运专线路基 检测 密实度 变形模量 |
Analysis of compaction standards used in high-speed railway subgrade |
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| HE Min-shuo
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LI Liang
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NIE Zhi-hong.Analysis of compaction standards used in high-speed railway subgrade[J].Journal of Railway Science and Engineering,2009,6(6). |
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| Authors: | HE Min-shuo LI Liang NIE Zhi-hong |
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| Affiliation: | HE Min-shuo1,2,LI Liang1,NIE Zhi-hong1(1.School of Civil , Architrctural Engineering,Central South University,Changsha 410075,China,2.China Railway First Group Co.Ltd,Xi'an 710054,China) |
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| Abstract: | The quality control and quality assurance tests used during high-speed railway subgrade construction in Wu Guang passenger transportation line were introduced.Through laboratory proctor compaction tests and in-situ tests using two kinds of filling materials,the relationship between compaction grade and porosity were obtained.The relation between K30,and Ev1 was analyzed,and reasonable controlling indexes for porosity used in the high-speed railway for middling grained and coarse grained soil were proposed.T... |
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| Keywords: | high-speed railway subgrade inspection compaction grade deformation module |
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