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聚丙烯纤维红黏土力学特性试验研究

张金利, 蒋正国, 杨钢

张金利, 蒋正国, 杨钢. 聚丙烯纤维红黏土力学特性试验研究[J]. 岩土工程学报, 2011, 33(zk1): 420-425.
引用本文: 张金利, 蒋正国, 杨钢. 聚丙烯纤维红黏土力学特性试验研究[J]. 岩土工程学报, 2011, 33(zk1): 420-425.
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ZHANG Jin-li, JIANG Zheng-guo, YANG Gang. Experimental study on mechanical behaviors of polypropylene fiber reinforced clay[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 420-425.
Citation: ZHANG Jin-li, JIANG Zheng-guo, YANG Gang. Experimental study on mechanical behaviors of polypropylene fiber reinforced clay[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 420-425.
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聚丙烯纤维红黏土力学特性试验研究  English Version

  • 1. 大连理工大学建设工程学部土木工程学院岩土工程研究所，辽宁 大连 116024 ; 2. 大连理工大学海岸和近海工程国家重点实验室，辽宁 大连 116024

基金项目: 国家自然科学基金项目 (50979013)
详细信息
    作者简介:

    张金利 (1964 – ) ，男，博士，副教授，硕士研究生导师，主要从事环境岩土工程方面的研究工作。

  • 中图分类号: TU411

Experimental study on mechanical behaviors of polypropylene fiber reinforced clay

  • 1. Institute of Geotechnical Engineering, School of Civil Engineering, Faculty of infrastructure Engineering, Dalian University of Technology, Dalian 116024, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

摘要

    摘要
  • 摘要: 通过多种试验研究了聚丙烯纤维红黏土的力学特性。击实与渗透试验结果表明，在一定纤维含量下，纤维红黏土的最大干密度基本不变，最优含水率变化范围较大，与红黏土的渗透系数处于相同量级，具有低渗透性。直剪试验、无侧限抗压强度试验、三轴试验结果表明，纤维红黏土强度显著高于红黏土强度，且随纤维含量与长度的增加而增加。红黏土加入纤维后，黏聚力得到了显著提高，而内摩擦角变化不大。纤维红黏土的应力－应变曲线具有典型的加工硬化特征，且具有鼓胀性破坏特征。
    Abstract: The mechanical behaviors of polypropylene fiber reinforced red clay are studied by means of different test methods. The compaction test and the permeability test show that the maximum dry unit weight of the fiber reinforced red clay is basically a constant value and the variation range of the optimum moisture content is great with certain fiber content. It has the same magnitude of permeability coefficients as the fiber reinforced red clay and the permeability coefficient is small. The results of direct shear test, unconfined compressive test and triaxial consolidation undrained test show the strength of the fiber reinforced red clay is obvious higher than that of the red clay, which increases with the fiber content and length. After being mixed with fiber, the cohesion of red clay rises a lot and the change of friction angle is small. The stress-strain curve of the fiber reinforced red clay shows typical work hardening character. The sample has the character of bulging breakage.
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    • 参考文献(15)
  • [1] 唐朝生 , 施 斌 , 高 玮 , 等 . 含砂量对聚丙烯纤维加筋黏性土强度影响的研究 [J]. 岩石力学与工程学报 , 2007, 26 : 2968 – 2973. (TANG Chao-sheng, SHI Bing, CAO Wei, et al. Study on effects of sand content on strength of polypropylene fiber reinforced clay soil[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26 : 2968 – 2973. (in Chinese))
    [2] 张艳美 , 张旭东 , 张鸿儒 . 土工合成纤维土补强机理试验研究及工程应用 [J]. 岩土力学 , 2005, 26 (8): 1323 – 1326. (ZHANG Yan-mei, ZHANG Xu-dong, ZHANG Houng-ru. Test research of geotechinque textile soil reinforcement mechanics, 2005, 26 (8): 1323 – 1326. (in Chinese))
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出版历程
  • 收稿日期:  2011-04-25
  • 发布日期:  2011-11-30

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