| 刚性承台下变截面柔性桩与地基相互作用的线性分析 |
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| 引用本文： | 刘杰,张可能.刚性承台下变截面柔性桩与地基相互作用的线性分析[J].岩土力学,2003,24(5):759-763. |
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| 作者姓名： | 刘杰 张可能 |
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| 作者单位： | 1. 株洲工学院 土木工程系，湖南 株洲 412008；2. 中南工业大学 资源环境工程学院，湖南 长沙 410083 |
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| 基金项目： | 湖南省教育厅基金资助项目(No. 01B028) |
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| 摘 要： | 对桩侧土及桩端土均采用线性荷载传递函数，同时，考虑桩周土所分担的荷载对单桩荷载传递规律的影响，利用力学理论及微分方程的近似解法—子域法，推出了刚性承台下变截面柔性单桩与地基相互作用的系列近似解析算式，并通过算例，将承台下变截面柔性桩的情况与同体积的等截面柔性桩的情况进行了对比。对比表明：改变桩型能提高柔性单桩及单桩承台的承载力。将模型试验结果与计算结果进行了比较，验证了解析算式的可行性。
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| 关 键 词： | 刚性承台 变截面柔性桩 相互作用 |
| 文章编号： | 1000-7598-(2003)05-0759-05 |
| 收稿时间： | 2002-06-11 |
| 修稿时间： | 2002年6月11日 |
Linear analysis of interaction of flexible piles with variable cross section and ground soil under rigid pile cap |
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| LIU Jie,ZHANG Ken-neng.Linear analysis of interaction of flexible piles with variable cross section and ground soil under rigid pile cap[J].Rock and Soil Mechanics,2003,24(5):759-763. |
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| Authors: | LIU Jie ZHANG Ken-neng |
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| Institution: | 1. Department of Civil Engineering，Zhuzhou institute of technology，Zhuzhou 412008，China； 2. College of Resources，Environment and Civil Engineering，Central South University，Changsha 410083 China |
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| Abstract: | Based on using linear load transfer function to pile-side soil and pile-end soil, and considering influence of sharing load of the pile-side soil on load transfer law of piles, and using theory of mechanics and approximate solution method—district method of differential equation，a set of approximate analytical formulas of interaction for a flexible single pile with variable cross section and ground soil are derived. For rigid pile cap, situation of flexible pile with variable cross-section are compared with situation of flexible pile with constant cross section by an example; the results show that the bearing capacity of the flexible pile and the composite foundation may be raised by changing pile type. The results of the model test are compared with the results. It is shown that the proposed method has good precision. |
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| Keywords: | rigid pile cap flexible pile with variable cross section interaction |
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