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静钻根植竹节桩抗拔承载性能试验研究

周佳锦, 龚晓南, 王奎华, 张日红

周佳锦, 龚晓南, 王奎华, 张日红. 静钻根植竹节桩抗拔承载性能试验研究[J]. 岩土工程学报, 2015, 37(3): 570-576. DOI: 10.11779/CJGE201503024
引用本文: 周佳锦, 龚晓南, 王奎华, 张日红. 静钻根植竹节桩抗拔承载性能试验研究[J]. 岩土工程学报, 2015, 37(3): 570-576. DOI: 10.11779/CJGE201503024
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ZHOU Jia-jin, GONG Xiao-nan, WANG Kui-hua, ZHANG Ri-hong. Behavior of the static drill rooted nodular piles under tension[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(3): 570-576. DOI: 10.11779/CJGE201503024
Citation: ZHOU Jia-jin, GONG Xiao-nan, WANG Kui-hua, ZHANG Ri-hong. Behavior of the static drill rooted nodular piles under tension[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(3): 570-576. DOI: 10.11779/CJGE201503024
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静钻根植竹节桩抗拔承载性能试验研究  English Version

  • 1. 浙江大学滨海和城市岩土工程研究中心,浙江 杭州 310058; 2. 浙江大学软弱土与环境土工教育部重点实验室,浙江 杭州 310058; 3. 浙东建材集团,浙江 宁波 315000

基金项目: 国家自然科学基金项目（51378464,51278450）
详细信息
    作者简介:

    周佳锦(1989- ),男,浙江诸暨人,博士研究生,主要从事桩基工程,地基处理及基坑工程等方面的研究工作。E-mail: zjjmuforever@163.com。

  • 中图分类号: TU47

Behavior of the static drill rooted nodular piles under tension

  • 1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China; 2. Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University, Hangzhou 310058, China; 3. ZDOON Building Materials Group, Ningbo 315000, China

摘要

    摘要
  • 摘要: 为了研究静钻根植竹节桩的抗拔承载性能,进行了静钻根植竹节桩抗拔静载试验。通过一组破坏性抗拔试验得到了完整的静钻根植竹节桩抗拔荷载位移曲线,并采用幂函数、双曲线和指数函数分别对试桩荷载位移曲线进行了拟合;通过桩身埋有应力计的静钻根植竹节桩的抗拔试验分别对其桩侧摩阻力与桩端阻力进行了研究。试验结果表明：静钻根植竹节桩抗拔荷载位移曲线比较平缓,采用指数函数对其进行拟合的效果较好;静钻根植抗拔桩中水泥土与桩周土接触面摩擦性质比灌注桩中桩土接触面摩擦性质要好,静钻根植抗拔桩的桩侧摩阻力是钻孔灌注桩的1.47~2.11倍;静钻根植抗拔桩中桩端水泥土扩大头能够提高桩基桩端阻力,而且能够提高靠近桩端处桩身与土体接触面的摩擦性质。
    Abstract: A series of field tests on static drill rooted nodular piles are conducted to investigate their behavior under tension. A group of destructive field tests are conducted to investigate the load-displacement response of the static drill rooted nodular piles under tension. Moreover, the power function, hyperbolic function and exponential function are used to fit the load-displacement curves of the test piles, respectively. Field tests on the static drill rooted nodular piles instrumented with strain gauges are conducted to investigate their skin friction and mobilized tip resistance. The test results show that the load-displacement curves of the static drill rooted nodular piles under tension are relatively flat, and that the exponential function can be used to fit the curves well. The frictional capacity of the static drill rooted nodular piles is better than that of the bored piles, and the skin friction of the static drill rooted nodular piles is about 1.47~2.11 times that of the bored piles. The existence of the enlarged cemented soil base of the static drill rooted piles can improve the capacity of the tip resistance as well as the frictional capacity of the pile-soil interface close to the enlarged base.
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    • 参考文献(15)
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出版历程
  • 收稿日期:  2014-04-16
  • 发布日期:  2015-03-23

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