| 刚-柔性桩复合地基变形特性有限元分析 |
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| 引用本文： | 朱奎,徐日庆,郭印,周鹏飞.刚-柔性桩复合地基变形特性有限元分析[J].岩土力学,2008,29(4):937-943. |
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| 作者姓名： | 朱奎 徐日庆 郭印 周鹏飞 |
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| 作者单位： | 1.浙江大学，杭州 310027；2. 温州大学，浙江 温州 325000 |
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| 基金项目： | 浙江省建设厅资助项目
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浙江省温州市科技局资助项目
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浙江省温州市软科学研究计划 |
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| 摘 要： | 在现场试验基础上对条形基础下刚-柔性桩复合地基进行有限元模拟分析。着重讨论了褥垫层、承台、刚性桩、柔性桩等的参数变化对刚-柔性桩复合地基沉降特性的影响。结果表明，复合地基沉降随着褥垫层厚度减小而减小，随着褥垫层模量增加而减小，承台厚度增加有利于减少差异沉降，刚性桩是控制沉降的主要构件，柔性桩桩长增加可以减少差异沉降。分析结果为刚-柔性桩复合地基的优化设计提供理论基础。
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| 关 键 词： | 刚-柔性桩复合地基 有限元 沉降 优化设计 |
| 文章编号： | 1000-7598-(2008)04-937-06 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006年3月21日 |
Finite element analysis of deformation characteristics of composite foundation with rigid-flexible piles |
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| ZHU Kui,XU Ri-qing,GUO Yin,Zhou Peng-fei.Finite element analysis of deformation characteristics of composite foundation with rigid-flexible piles[J].Rock and Soil Mechanics,2008,29(4):937-943. |
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| Authors: | ZHU Kui XU Ri-qing GUO Yin Zhou Peng-fei |
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| Institution: | 1.Zhejiang University, Hangzhou 310027, China; 2.Wenzhou University, Wenzhou 325000, China |
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| Abstract: | Composite foundation with rigid-flexible piles under strip foundation is analyzed by means of finite element method on the basis of field test．The influential factors including cushion, cap, rigid pile and flexible pile on deformation characteristics of composite foundation with rigid-flexible piles are studied systematically. The results indicate composite foundation settlement reduction along with cushion thickness reduction and module increment, cap thickness increment is advantageous to differential settlement reduction, rigid pile is main component to control settlement; flexible pile increment can reduce differential settlement. These conclusions are helpful for optimum design. |
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| Keywords: | composite foundation with rigid-flexible piles finite element method settlement optimization of design |
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