| 合肥地区膨胀土路基处置深度问题探讨 |
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| 引用本文： | 余飞,陈善雄,许锡昌,余颂.合肥地区膨胀土路基处置深度问题探讨[J].岩土力学,2006,27(11):1963-1966. |
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| 作者姓名： | 余飞 陈善雄 许锡昌 余颂 |
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| 作者单位： | 中国科学院武汉岩土力学研究所,武汉,430071 |
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| 摘 要： | 采用统计分析气候资料和现场测试含水率的办法，对合肥地区大气影响深度进行了研究，其结果表明，按气象资料统计分析法计算的大气影响深度比实际值小。在此基础上，建议按膨胀力与零膨胀率的相关性来确定膨胀土路基处置深度。通过合肥地区18个代表性土样的膨胀力试验，给出了膨胀力与零膨胀率的相关曲线，为膨胀土路基处置深度的确定提供了可靠的依据。最后，给出了合肥地区膨胀上路基不同结构部能处置深度的建议。
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| 关 键 词： | 膨胀土路基 广义湿度系数 大气影响深度 零膨胀率 处置深度 |
| 文章编号： | 1000-7598-（2006）11-1963-05 |
| 收稿时间： | 2005-06-06 |
| 修稿时间： | 2005-06-062005-10-17 |
Study on determination of treatment depth for expansive soil subgrade in Hefei |
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| YU Fei,CHEN Shan-xiong,XU Xi-chang,YU Song.Study on determination of treatment depth for expansive soil subgrade in Hefei[J].Rock and Soil Mechanics,2006,27(11):1963-1966. |
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| Authors: | YU Fei CHEN Shan-xiong XU Xi-chang YU Song |
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| Institution: | Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
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| Abstract: | The depth of soil layer which influenced by climate in Hefei is studied by way of climate environmental data and field experiment of water content. It can be found that the calculated depth of the layer according to climate environmental data is smaller than the real value. On this foundation, the determination method of treatment depth for subgrade paved with expansive soil is proposed based on the relationship of swelling pressure and unloaded expansibility. The correlative curve of the expansive pressure and the unloaded expansibility is established by means of swelling pressure test of eighteen representative soils selected from Hefei. It provides reliable references for determining the treatment depth of subgrade. Finally, some suggestions of treatment depth for the different structure positions of subgrade are given. |
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| Keywords: | expansive soil subgrade generalized moisture coefficient climate influenced layer unloaded expansibility treatment depth |
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