| 钻孔变截面灌注桩的荷载传递特性 |
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| 引用本文： | 杨有莲,朱俊高.钻孔变截面灌注桩的荷载传递特性[J].水利水电科技进展,2008,28(3):37-39. |
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| 作者姓名： | 杨有莲 朱俊高 |
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| 作者单位： | 河海大学岩土工程研究所,江苏,南京,210098 |
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| 摘 要： | 以某工程钻孔变截面灌注试桩为例,采用三维有限元计算程序,研究了相同土质条件下变截面桩和等截面桩在竖向桩顶加载方式下荷载传递机理的异同。引入相对摩阻力Rτ,进一步分析了桩型对桩侧摩阻力发挥程度的影响:Rτ=1.0,表明桩侧摩阻力充分发挥;Rτ>1.0,桩侧摩阻力表现为强化效应;Rτ<1.0,则桩侧摩阻力表现为软化效应。
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| 关 键 词： | 变截面桩 荷载传递 有限单元法 相对摩阻力 钻孔灌注桩 |
| 修稿时间： | 2008/6/16 0:00:00 |
Load transfer performance of variable-section bored pile |
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| YANG You-lian,ZHU Jun-gao.Load transfer performance of variable-section bored pile[J].Advances in Science and Technology of Water Resources,2008,28(3):37-39. |
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| Authors: | YANG You-lian ZHU Jun-gao |
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| Abstract: | With a variable-section diameter bored pile as an example,numerical simulation are performed with 3-D FEM to study the load transfer performance of variable-section and uniform-section vertical loaded bored piles under identical geological conditions.By introduction of relative friction,Rτ,the effects of pile-type on the exertion degree of side friction are analyzed: if Rτ=1.0,it indicates that the skin friction is being sufficiently developed;if Rτ>1.0,it indicates consolidation phenomena;if Rτ<1.0,it indicates softening phenomena. |
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| Keywords: | variable-section pile load transfer performance finite element method relative side friction bored pile |
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