| 冲击碾压法处理黄土地基的试验研究 |
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| 引用本文： | 王吉利,刘怡林,沈兴付,彭圣平.冲击碾压法处理黄土地基的试验研究[J].岩土力学,2005,26(5):755-758. |
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| 作者姓名： | 王吉利 刘怡林 沈兴付 彭圣平 |
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| 作者单位： | 1.中国科学院武汉岩土力学研究所，武汉430071；2.交通部公路科学研究所，北京100088； 3.湖北省交通规划设计院，武汉430051；4.湖北省天仙一级公路建设指挥部，天门 431700 |
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| 摘 要： | 通过载荷试验、标准贯入试验、重型动力触探试验、静力触探试验等原位测试，以及探井取土样进行室内土工试验，对黄土地区某高速公路路段进行冲击碾压法地基处理的试验研究，探讨地基土的压实度、密实度、压缩性、湿陷性、处理深度等随冲压遍数的变化规律。研究表明，采用冲击碾压法处理黄土地基，一次处理的有效深度可达1.0 m，且对1.0～2.0 m土层有一定程度的影响。因此，冲击碾压法处理地基是有效和实用的，且生产效率高，可在黄土地区路基工程中推广应用。
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| 关 键 词： | 黄土 冲击碾压法 原位测试 土工试验 压实度 |
| 文章编号： | 1000-7598-(2005)05-0755-04 |
| 收稿时间： | 2004-07-26 |
| 修稿时间： | 2004年7月26日 |
Experimental investigation on treatment of loess subgrade with impaction and grind method(IGM) |
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| WANG Ji-li,LIU Yi-lin,SHEN Xing-fu,PENG Sheng-ping.Experimental investigation on treatment of loess subgrade with impaction and grind method(IGM)[J].Rock and Soil Mechanics,2005,26(5):755-758. |
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| Authors: | WANG Ji-li LIU Yi-lin SHEN Xing-fu PENG Sheng-ping |
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| Institution: | 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Research Institute of Highway, Ministry of Communications, Beijing 100088, China; 3. Hubei Communication Planning and Design Institute, Wuhan 430071, China; 4. Hubei Construction Headquarters of Tianxian First Class Highway, Tianmen 431700, China |
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| Abstract: | In a representative highway loess section, the experimental investigations on treatment of loess subgrade with impaction and grind method(IGM) were conducted. In these investigation, in-situ tests(loading tests, SPTs, DPTs, CPTs) and related laboratory tests were adopted. The rule that physico-mechanical parameters of subgrade (degree of compaction, degree of density, compression and collapsibility) and depth of treatment change along with pressing number is discussed. Through investigation, it is indicated that the effective depth of once treatment can reach 1.0m and has some effect on soil layer from 1.0m to 2.0m with the treatment of subgrade of loess with IGM. Therefore the treatment of subgrade with IGM is effective, practical and has high production efficiency. And it can get a wide use in highway loess foundation engineering. |
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| Keywords: | loess impaction and grind method(IGM) in-situ sounding geotechnical test degree of compaction |
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