| 砂质板岩粗粒土蠕变特性影响因素试验研究 |
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| 引用本文： | 韩铠屹,;刘群,;宋晓东.砂质板岩粗粒土蠕变特性影响因素试验研究[J].长沙铁道学院学报,2014(4):63-67. |
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| 作者姓名： | 韩铠屹 ;刘群 ;宋晓东 |
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| 作者单位： | [1]中南大学土木工程学院,湖南长沙410075; [2]沪昆客专湖南有限公司,湖南长沙410008 |
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| 基金项目： | 铁道部科技研究开发计划项目（2010G018-B-3-2） |
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| 摘 要： | 通过单轴压缩蠕变试验研究含水率以及颗粒组成对粗粒土蠕变的影响规律,分析砂质板岩粗粒土在不同影响因素（含水状态、颗粒组成）下的蠕变特性,并基于与试验结果相符的H-K蠕变模型,探讨含水率、细颗粒含量、应力与蠕变参数之间的关系。研究结果表明：含水率、细颗粒含量均为影响粗粒土蠕变特性的重要因素,提出通过使用干燥或饱和含水态的粗粒土填料以及使用细颗粒含量为30%的粗粒土填料的途径来控制路堤的长期沉降。
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| 关 键 词： | 含水率 细颗粒含量 粗粒土 单轴试验 蠕变特性 |
Research on tests of the influence factors on creep property of sandy slate coarse-grained soil |
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| Institution: | HAN Kaiyi, LIU Qun, SONG Xiaodong(1. School of Civil Engineering, Central South University, Changsha 410075, China; 2. Shanghai -Kunming Passenger Railway Hunan Corporation, Changsha 410008, China) |
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| Abstract: | Uniaxial compression creep test was utilized to analyze the effect of moisture conditions and different particle grading components on creep property of sandy slate coarse-grained soil,and investigate the relations between moisture contents or fine particle contents and creep parameters on the basis of H-K Creep Model which is in agreement with the experimental results. The research results show that moisture content and fine particle content are the important factors that affect creep property of sandy slate coarse-grained soil and it is proposed to use dry or saturated coarse-grained soil and fine particle content accounting for 30% coarse-grained soil filler to decrease long-term settlement of embankment. |
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| Keywords: | moisture content fine particle content coarse-grained soil uniaxial test creep property |
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