| 应用圆柱孔扩张理论对PHC管桩承载特性的研究 |
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| 引用本文： | 郭杨,崔伟. 应用圆柱孔扩张理论对PHC管桩承载特性的研究[J]. 合肥工业大学学报(自然科学版), 2010, 33(2) |
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| 作者姓名： | 郭杨 崔伟 |
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| 作者单位： | 安徽省建筑科学研究设计院,安徽,合肥,230001 |
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| 摘 要： | 应用圆柱孔扩张理论对合肥滨湖新区某工程PHC管桩的承载特性进行数值分析,计算结果与静载试验吻合较好,桩侧摩阻力分布呈"三峰态"曲线,挤土后的桩侧摩阻力极限值比勘察报告推荐值大25%,挤压后的硬塑粘土层的极限桩端阻力比规范值高46.0%~59.3%,从而得出了合肥地区挤土PHC管桩桩身侧摩阻力与桩端阻力勘察设计取值偏低的结论。
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| 关 键 词： | 圆柱孔扩张理论 PHC管桩 桩侧阻力 桩端阻力 有限单元法 |
Study on the bearing behavior of PHC pile using cylindrical cavity expansion theory |
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| GUO Yang,CUI Wei. Study on the bearing behavior of PHC pile using cylindrical cavity expansion theory[J]. Journal of Hefei University of Technology(Natural Science), 2010, 33(2) |
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| Authors: | GUO Yang CUI Wei |
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| Abstract: | .This paper makes numerical analysis of the bearing behavior of PHC pile in Binghu new area of Hefei using cylindrical cavity expansion theory.The numerical analysis results agree well with the results of static loading tests.It shows that PHC pile skin resistance is distributed in curved shape which has three peak values.The ultimate value of skin resistance of numerical analysis is 1.25 times of what was recommended in the survey report.For the stiff-plastic clay,the ultimate value of the tip resistance is 46.0%～59.3% more than that in the standard.It shows that the skin resistance and tip resistance of PHC piles are on the low side in reconnaissance and design in Hefei region. |
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| Keywords: | cylindrical cavity expansion theory PHC pile skin resistance tip resistance finite ele-ment method |
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