| 堆载下单桩负摩阻力工作性状非线性数值分析 |
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| 引用本文： | 林智勇,苏美选.堆载下单桩负摩阻力工作性状非线性数值分析[J].工程地质学报(英文版),2010,18(5):714-719. |
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| 作者姓名： | 林智勇 苏美选 |
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| 作者单位： | 1.福建工程学院土木工程系 福州 350108; |
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| 基金项目： | 福建省教育厅科技基金项目，福建工程学院青年科研基金项目 |
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| 摘 要： | 利用三维非线性数值方法对一算例在堆载作用下桩侧负摩阻力进行了计算分析。计算结果揭示了摩擦型、端承型桩负摩阻力工作性状的异同;分析了堆载速度、桩顶荷载对负摩阻力的影响:堆载越快,负摩阻力越小;在无桩顶荷载作用下,由负摩阻力引起的下拉荷载最大,可视为常规方法设计的上限值;桩顶荷载与堆载施工顺序对负摩阻力的影响也很大,先施加桩顶荷载,后进行堆载所产生的负摩阻力最大,反之最小。
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| 关 键 词： | 堆载 负摩阻力 数值模拟 下拽力 中性点 |
| 收稿时间： | 2010-05-10 |
NONLINEAR NUMERICAL ANALYSIS ON NEGATIVE SKIN FRICTION BEHAVIOR OF SINGLE PILE UNDER SURFACE LOADS |
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| LIN Zhiyong SU Meixuan.NONLINEAR NUMERICAL ANALYSIS ON NEGATIVE SKIN FRICTION BEHAVIOR OF SINGLE PILE UNDER SURFACE LOADS[J].Journal of Engineering Geology,2010,18(5):714-719. |
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| Authors: | LIN Zhiyong SU Meixuan |
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| Institution: | 1.Department of Civil Engineering,Fujian University of Technology,Fuzhou 350108;2.Department of Architectural Engineering,Fuzhou Strait Vocation and Technological College,Fuzhou 350014 |
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| Abstract: | Three dimensional nonlinear analyses on negative skin friction of a single pile was carried out for a specific case under surface loads.The results show the similarities and differences of negative skin friction behavior between friction pile and end-bearing pile.It was found that loading velocity of surface loads and the pile working loads influence negative skin friction very much: the more the loading velocity,the less the negative skin friction;the dragload of a pile without pile axial load is the ultim... |
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| Keywords: | Surface load Negative skin friction Numerical analysis Dragload Neutral point Pile foundation |
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