| 长短桩复合地基性状的有限元分析 |
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| 引用本文： | 王卫.长短桩复合地基性状的有限元分析[J].淮海工学院学报,2005,14(3):68-72. |
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| 作者姓名： | 王卫 |
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| 作者单位： | 南京中医药大学基建处,江苏南京210029 |
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| 摘 要： | 通过对长短桩复合地基的有限元分析,探讨了长短桩的变形模量、桩长对桩身轴力和复合地基沉降的影响,分析表明：长桩的桩身应力表现出均匀向下传递荷载的特性,而短桩桩身应力在3 m范围内迅速减小;长短桩的变形模量对复合地基沉降的影响均不大;增加长桩或刚性短桩的桩长可以有效减小基础承台的沉降和提高桩顶荷载,而增加柔性短桩的桩长对控制沉降和提高桩身应力的作用不大.
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| 关 键 词： | 长短桩 复合地基 有限元 |
| 文章编号： | 1672-6685(2005)03-0068-05 |
| 收稿时间： | 2005-07-19 |
| 修稿时间： | 2005-08-30 |
FEM Analysis of Long-short-pile Composite Foundation |
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| WANG Wei.FEM Analysis of Long-short-pile Composite Foundation[J].Journal of Huaihai Institute of Technology:Natural Sciences Edition,2005,14(3):68-72. |
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| Authors: | WANG Wei |
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| Affiliation: | Dept. of Infrastructure, Nanjing University of Traditional Chinese Medicine, Nanjing 210029, China |
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| Abstract: | Based on the finite element method (FEM) analysis of long-short-pile composite foun dation, we discussed the influence of pile modulus and pile length on the stress distribution and the settlement of composite foundation. Analysis showed that the stress of long piles decreased a long with length uniformity while that of short piles decreased rapidly within the top 3 meters; the influence of long and short piles modulus is small; the increase in the length of long piles or rigid short piles could effectively decrease the foundation settlement and enhance the top load, but the increase in the length of flexible short piles had little influence in this respect. |
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| Keywords: | long-short-pile composite foundation finite element method(FEM) |
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