| 桩土相互作用时端承桩桩顶扭转复刚度特性研究 |
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| 引用本文： | 张涛,胡昌斌. 桩土相互作用时端承桩桩顶扭转复刚度特性研究[J]. 福州大学学报(自然科学版), 2006, 34(3): 409-414 |
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| 作者姓名： | 张涛 胡昌斌 |
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| 作者单位： | 1. 福州大学土木建筑工程学院,福建,福州,350002
2. 福州大学土木建筑工程学院,福建,福州,350002;东南大学交通学院,江苏,南京,210096 |
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| 基金项目： | 福建省自然科学基金;福州大学校科研和教改项目 |
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| 摘 要： | 假设桩周土层为均质粘弹性体,土材料阻尼为粘性阻尼,从三维轴对称角度出发,对任意激振扭矩作用下端承桩与土耦合扭转振动时的桩顶响应进行了理论研究.利用Laplace变换,求得桩顶扭转角阻抗函数解析解,进而求得桩顶扭转复刚度的解析表达.基于所得理论解重点探讨了桩的长径比、桩侧土粘性阻尼以及桩侧土模量对桩顶扭转复刚度的特殊影响,得到若干重要结论.
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| 关 键 词： | 桩土相互作用 扭转振动 粘性阻尼 复刚度 |
| 文章编号： | 1000-2243(2006)03-0409-06 |
| 修稿时间： | 2005-12-19 |
Study on torsional complex stiffness at the top of end bearing pile considering the effect of soil-pile interaction |
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| ZHANG Tao,HU Chang-bin. Study on torsional complex stiffness at the top of end bearing pile considering the effect of soil-pile interaction[J]. Journal of Fuzhou University(Natural Science Edition), 2006, 34(3): 409-414 |
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| Authors: | ZHANG Tao HU Chang-bin |
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| Affiliation: | 1,2)(1.College of Civil Engineering and Architecture,Fuzhou University,Fuzhou,Fujian 350002,China;2.College of Tanspotation,Southeast University,Nanjing,Jiangsu 210096,China) |
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| Abstract: | Assuming that the soil is uniform linear visco-elastic layer with viscous type damping,the(interaction) between a soil layer and end bearing pile is investigated theoretically.By Laplace transformation,the complex stiffness at the pile top is obtained in a closed form.Based on the solution,a parametric study is conducted to determine the main features of the complex stiffness at the pile,and the special influence of viscous damping of soil layer is also discussed here,and some new disclusion are developed here. |
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| Keywords: | pile-soil interaction torsional viration viscous damping complex stiffness |
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