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抗拔单桩受力性状的解析算法

张乾青, 张忠苗

张乾青, 张忠苗. 抗拔单桩受力性状的解析算法[J]. 岩土工程学报, 2011, 33(sup2): 308-313.
引用本文: 张乾青, 张忠苗. 抗拔单桩受力性状的解析算法[J]. 岩土工程学报, 2011, 33(sup2): 308-313.
shu
ZHANG Qian-qing, ZHANG Zhong-miao. Analytical prediction approach for response of single pile under tension[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 308-313.
Citation: ZHANG Qian-qing, ZHANG Zhong-miao. Analytical prediction approach for response of single pile under tension[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(sup2): 308-313.
shu

抗拔单桩受力性状的解析算法  English Version

  • 1.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 ； 2. 浙江大学岩土工程研究所,浙江 杭州 310058

详细信息
    作者简介:

    张乾青 (1983 – ) ,男,山东济宁人,博士研究生,主要从事桩基础与基础工程的研究。

  • 中图分类号: TU473

Analytical prediction approach for response of single pile under tension

  • 1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; 2. Institute of Geotechnical Engineering, Zhejiang University , Hangzhou 310058, China

摘要

    摘要
  • 摘要: 在荷载传递法的基础上,提出了一种抗拔单桩变形的简便解析算法。此法可反映桩侧摩阻力逐渐发挥至极限状态的过程,且可用于分析抗拔单桩位于成层土中的情况。算法的关键是确定合理的抗拔桩极限侧阻,进一步明确了抗拔桩极限侧阻计算时各参数的取值,并指出应将抗压桩极限侧阻计算值的 0.7 倍作为抗拔桩的极限侧阻计算值。已有现场试验抗拔单桩实测数据和此算例对比分析表明此法是合理可行的且方便快速。
    Abstract: A simple and analytical approach is presented to analyze the load-displacement response of single pile under tension by using the load transfer method. This work can analyze the mobilization of shaft resistance up to the limiting unit skin friction and allow an estimation of the behavior of single uplift pile embedded into multilayered soils. Furthermore, the values of the parameters related to the ultimate unit shaft resistance, a key factor of this approach, are clarified based on some studies reported in literatures. The limiting unit skin friction of the pile under tension is 0.7 times that of the compression pile as suggested by this paper. Comparisons of the load-displacement response for one well-instrumented field test in multilayered soils are given to demonstrate the effectiveness and accuracy of the proposed method. This present work enables a quick estimation of the response of a single uplift pile embedded in layered soils, resulting in time saving.
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    • 参考文献(19)
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出版历程
  • 收稿日期:  2011-08-07
  • 发布日期:  2011-12-06

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