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首页 > 过刊浏览>2019年第41卷第1期 >55-61. DOI:10.11835/j.issn.2096-6717.2019.007
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基于单桥静力触探的静压桩沉桩阻力估算方法
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TU473.1

基金项目:

国家自然科学基金（51708316、51778312、51809146）；中国博士后科学基金（2018M632641）；山东省重点研发计划（2017GSF1610、2018GSF117008）；山东省自然科学基金（ZR2016EEQ08、ZR2017PEE006）；山东省高等学校科技计划（J16LG02）；青岛市应用基础研究计划（16-5-1-39-jch）


Estimation of the penetration resistance of jacked pile based on the single bridge CPT
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    摘要:

    为了通过单桥静力触探指标比贯入阻力来模拟计算静压桩沉桩阻力，根据《建筑桩基技术规范》（JGJ 94-2008）中由比贯入阻力计算的单桩承载力与现场压桩试验所得到的压桩力进行比较，提出了考虑桩端阻力和桩侧摩阻力的综合修正系数α、β来估算静压桩沉桩阻力的计算方法，给出桩端阻力和桩侧摩阻力的计算公式；针对不同土层，给出了不同综合修正系数建议值；基于自行编制的Visual Basic可视化程序，以曲线的形式将计算结果直观地显示出来。实际工程的模拟计算和压桩力的实测结果进一步表明采用综合修正系数计算沉桩阻力完全可行。

    Abstract:

    The penetration resistance of jacked pile was calculated by using the specific penetration resistance of single bridge cone penetration test. According to the comparison between estimated bearing capacity from Technical Code for Building Pile Foundation (JGJ 94-2008) and measured value, the calculation method of estimating the penetration resistance of jacked pile was put forward, which took comprehensive correction coefficient α and β of pile tip resistance and skin friction of pile into consideration. Besides, the calculation formula of base resistance and side resistance were also defined. Several suggestions for determination of comprehensive correction coefficient were given for different soil layers. The proposed approach was compiled in the Visual Basic visualization program, and the corresponding results were displayed in the form of graphics. Through the simulation of specific engineering and test results of pile driving pressure, the results further showed that it was feasible to use the comprehensive correction coefficient to calculate the pile resistance. The obtained results could provide guidances for the design and construction of jacked pile under similar condition in engineering practice.

    参考文献
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黄凯,张明义,白晓宇,孙文来.基于单桥静力触探的静压桩沉桩阻力估算方法[J].土木与环境工程学报（中英文）,2019,41(1):55-61. Huang Kai, Zhang Mingyi, Bai Xiaoyu, Sun Wenlai. Estimation of the penetration resistance of jacked pile based on the single bridge CPT[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2019,41(1):55-61.10.11835/j. issn.2096-6717.2019.007

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  • 收稿日期:2018-03-15
  • 在线发布日期: 2019-04-04
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