| 膨胀土及袋装膨胀土干湿循环试验研究 |
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| 引用本文： | 白福青,浦敏艳,朱克生.膨胀土及袋装膨胀土干湿循环试验研究[J].南水北调与水利科技,2009,7(4):20-24. |
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| 作者姓名： | 白福青 浦敏艳 朱克生 |
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| 作者单位： | 1. 河海大学水利水电工程学院,南京,210098
2. 中国水电建设集团港航建设有限公司,天津,300461 |
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| 摘 要： | 对南阳膨胀土分别进行了有荷载与无荷载两种情况下不同循环次数的变形与强度特性试验,同时进行了将膨胀土装入编织袋而形成的土工袋的平行试验.结果表明:膨胀土在干湿循环过程中的胀缩变形过程不完全可逆,其绝对胀缩率峰值随干湿循环次数的增加而逐渐减小;膨胀土的抗剪强度指标c值随循环次数的增加逐渐减小,ψ值变化不大;土工袋有抑制膨胀土胀缩变形的作用,其抗压强度值随循环次数的增加而逐渐减小.
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| 关 键 词： | 膨胀土 干湿循环 土工袋 强度 变形 |
Experimental Studies on Expansive Soil and Bagged Expansive Soil under Drying-Wetting Cycles |
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| BAI Fu-qing,PU Min-yan,ZHU Ke-sheng.Experimental Studies on Expansive Soil and Bagged Expansive Soil under Drying-Wetting Cycles[J].South-to-North Water Transfers and Water Science & Technology,2009,7(4):20-24. |
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| Authors: | BAI Fu-qing PU Min-yan ZHU Ke-sheng |
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| Affiliation: | 1.College of Water Conservancy and Hydropower Engineering;Hohai University;Nanjing 210098;China;2.Ganghang;Construction Co.;Ltd.;Sinohydro Corporation;Tianjin 300461;China |
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| Abstract: | Laboratory experiments are carried out on a Nanyang expansive soil to investigate its characteristics of the deformation and strength under different repeated drying-wetting cycles when an external load is applied on the samples or not. The parallel experiments are also carried out on the soilbags (filling the expansive soil into woven plastic bags). The results show that the swelling-shrinking deformation of the tested expensive soil is not completely reversible during the drying-wetting process and the pe... |
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| Keywords: | expansive soil drying-wetting cycle soilbag strength deformation |
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