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上拔式静力触探拉拔阻力的试验研究

汪明元, 单治钢, 宋卫康, 狄圣杰, 胡胜刚, 陈凡凡

汪明元, 单治钢, 宋卫康, 狄圣杰, 胡胜刚, 陈凡凡. 上拔式静力触探拉拔阻力的试验研究[J]. 岩土工程学报, 2016, 38(z2): 167-171. DOI: 10.11779/CJGE2016S2027
引用本文: 汪明元, 单治钢, 宋卫康, 狄圣杰, 胡胜刚, 陈凡凡. 上拔式静力触探拉拔阻力的试验研究[J]. 岩土工程学报, 2016, 38(z2): 167-171. DOI: 10.11779/CJGE2016S2027
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WANG Ming-yuan, SHAN Zhi-gang, SONG Wei-kang, DI Sheng-jie, HU Sheng-gang, CHEN Fan-fan. Experimental study on resistance of pull-out cone penetration tests[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 167-171. DOI: 10.11779/CJGE2016S2027
Citation: WANG Ming-yuan, SHAN Zhi-gang, SONG Wei-kang, DI Sheng-jie, HU Sheng-gang, CHEN Fan-fan. Experimental study on resistance of pull-out cone penetration tests[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 167-171. DOI: 10.11779/CJGE2016S2027
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上拔式静力触探拉拔阻力的试验研究  English Version

  • 1. 中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122;
    2. 郑州大学土木工程学院,河南 郑州 450001;
    3. 长江水利委员会长江科学院,湖北 武汉 430010

基金项目: 国家自然科学基金项目（51509017）
详细信息
    作者简介:

    汪明元(1972- ),男,教授级高级工程师,主要从事海洋工程地质、海洋深基础、软基处理和岩土工程计算方法等方面的研究。E-mail: wmy_90@163.com。

Experimental study on resistance of pull-out cone penetration tests

  • 1. HydroChina Huadong Engineering Corporation, Hangzhou 310012, China;
    2. School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;
    3. Changjiang River Scientific Research Institute(CRSRI), Wuhan 430010, China

摘要

    摘要
  • 摘要: 为了研究新型上拔式静力触探拉拔阻力的变化规律,自主开发了大型模型箱试验装置,并以黏土和砂土为研究对象,在室内模拟其拉拔过程。该试验主要对不同刃口角度、刃口长度、拉拔速率、压实度、相对密度等因素对拉拔阻力的影响进行研究。研究结果表明：上拔阻力变化曲线大致分为急速上升阶段、缓慢上升阶段和稳定阶段3个阶段;拉拔阻力随着刃口角度的增加而增大;前期拉拔阻力增加速率与最大拉拔力均随着刃口长度的增加而增大;随着拉拔速率的增长,拉拔阻力在逐渐增大;随着压实度的增加,最大拉拔阻力也逐渐增加,但二者并未表现出明显的线性关系;随着相对密度的增加,拉拔试验得到的最大拉拔阻力逐渐增加。在相对密度较低时,拉拔阻力增加缓慢,相对密度较高时,拉拔阻力增加迅速。
    Abstract: To investigate change of resistance of pull-out cone penetration tests, pull-out tests are performed on clayey soil and sand in a new large-scale model chamber under controlled conditions. The effects of edge angle, edge length, pull-out rate, compactness and relative densities on the evolution of pull-out resistance are highlighted. The results show that the change of pull-out resistance can be divided into three stages: sharp-increases stage, slow-increase stage and stabilization. The pull-out resistance increases along with the increase of edge angle. The increasing rate of pull-out resistance at early stage of tests and the ultimate value of pull-out resistance become larger and larger as the increase of edge length. The pull-out resistance and its maximum value also increases as the increase of pull-out rate, compactness and relative densities. However, there is no obviously linear relationship between the maximum pull-out resistance and the compactness. The increase of pull-out resistance is slow at low compactness and relative densities while it is fast when the compactness and relative densities become large.
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    • 参考文献(10)
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出版历程
  • 收稿日期:  2016-05-18
  • 发布日期:  2016-10-19

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