| 超长群桩竖向承载特性的有限元分析 |
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| 引用本文： | 王成华,李海元.超长群桩竖向承载特性的有限元分析[J].低温建筑技术,2006(6):92-94. |
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| 作者姓名： | 王成华 李海元 |
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| 作者单位： | 天津大学建筑工程学院,天津,300072;天津大学建筑工程学院,天津,300072 |
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| 摘 要： | 采用三维有限元程序对竖向荷载作用下超长群桩的承载性状进行分析。土体本构关系采用Dun-can-Chang双曲线非线性弹性模型,桩、承台采用线弹性模型,桩土界面采用刚塑性无厚度接触面模型。讨论了承台、桩底地层条件、桩长、桩距、桩数等对超长群桩承载形状的影响。得到了超长群桩承载形状的一些规律,对实际的工程实践具有一定的指导意义。
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| 关 键 词： | 超长桩 群桩 有限元 群桩效应 |
| 文章编号： | 1001-6864（2006）06-0092-03 |
| 收稿时间： | 2006-08-11 |
| 修稿时间： | 2006年8月11日 |
FINITE ELEMENT ANALYSIS ON BEHAVIOR OF SUPER-LONG PILE GROUPS UNDER VERTICAL LOADS |
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| WANG Cheng-hua,LI Hai-yuan.FINITE ELEMENT ANALYSIS ON BEHAVIOR OF SUPER-LONG PILE GROUPS UNDER VERTICAL LOADS[J].Low Temperature Architecture Technology,2006(6):92-94. |
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| Authors: | WANG Cheng-hua LI Hai-yuan |
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| Affiliation: | School of Civil Engineering , Tianjin University, Tianjin 300072, China |
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| Abstract: | Using the 3D finite element method,the bearing capacity behavior and load transfer mechanism of super-long pile groups under vertical loads have been analyzed.Duncan-Chang nonlinear elastic model is used to simulate the constitutive relation of soils,linear elastic model is used to simulate the constitutive relation of concrete and the Goodman model is adopted in contact plane.Some influential factors,such as the pile length L,the ratio of the pile spacing to the pile diameter Sa/d,the pile number n,pile caps and base strata have been analyzed.The action laws of super-long pile groups under vertical loads are obtained,and some references for theoretical research and engineering practice are provided. |
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| Keywords: | super-long piles pile groups finite element analysis efficiency of pile groups |
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