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上覆压力存在条件下防渗墙刺入土体变形的模型试验研究

潘家军, 程展林, 饶锡保

潘家军, 程展林, 饶锡保. 上覆压力存在条件下防渗墙刺入土体变形的模型试验研究[J]. 岩土工程学报, 2013, 35(zk1): 62-67.
引用本文: 潘家军, 程展林, 饶锡保. 上覆压力存在条件下防渗墙刺入土体变形的模型试验研究[J]. 岩土工程学报, 2013, 35(zk1): 62-67.
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PAN Jia-jun, CHENG Zhan-lin, RAO Xi-bao. Experimental study on soil deformation due to penetration of impervious wall considering overburden pressure[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 62-67.
Citation: PAN Jia-jun, CHENG Zhan-lin, RAO Xi-bao. Experimental study on soil deformation due to penetration of impervious wall considering overburden pressure[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 62-67.
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上覆压力存在条件下防渗墙刺入土体变形的模型试验研究  English Version

  • 长江科学院水利部岩土力学与工程重点实验室，湖北 武汉 430010

基金项目: 国家自然科学基金青年基金项目（51109013）；水利部公益性行业科研专项经费项目（201201039）；国家十一五科技支撑课题（2008BAB29B02）
详细信息
    作者简介:

    潘家军(1980- )，男，湖北孝感人，高级工程师，主要从事土的工程性质及岩土工程数值分析、土石坝工程方面的研究工作。E-mail: pj62739663@126.com。

  • 中图分类号: TU411

Experimental study on soil deformation due to penetration of impervious wall considering overburden pressure

  • Changjiang River Scientific Research Institute，Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Wuhan 430010, China

摘要

    摘要
  • 摘要: 采用在三轴压力室上改造的物理模型实验室，针对防渗墙墙端与土相互作用的特点，进行了不同上覆压力存在条件下模型墙与土的刺入物理模型试验研究。研究结果表明：不同上覆压力下，墙端阻力随刺入变形呈现较大的差别；相同刺入量情况下，墙端阻力随上覆压力的增大而增加；在一定的上覆压力下，墙端阻力随刺入变形的增加而增大，但存在一个极限值；墙端阻力对墙周围土体影响范围较小，墙端阻力及刺入变形增加土体竖向变形，墙端土体主要表现为竖向压缩变形，墙端平面以上的土体有斜向下运动的趋势。在此基础上提出了描述墙端阻力-刺入变形曲线的数学表达式。
    Abstract: A new experimental apparatus is professionally developed to investigate the behaviors of the interface between diaphragm wall end and soil considering overburden pressure. The results indicate that: (1) the wall end resistance with penetration-induced deformation appears large difference under different overburden pressures; (2) the wall end resistance increases with the increasing overburden pressure under the same penetration-induced soil deformation; (3) the wall end resistance increases with the increasing penetration-induced soil deformation under the certain overburden pressure, but it has a limit value; (4) the wall end resistance has a small influence on the surrounding soil. The wall end resistance and the penetration-induced soil deformation increase the vertical deformation of soil. The soil below the wall end appears vertical compressive deformation, and the soil above the level of wall end has downward movement trend. On the basis of the tests, mathematical expressions for the wall end resistance and the penetration-induced soil deformation considering overburden pressure are proposed.
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出版历程
  • 收稿日期:  2013-03-01
  • 发布日期:  2013-07-18

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