| 柔性基础下CFG桩复合地基桩土应力比研究 |
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| 引用本文： | 曾文伟,吴国华.柔性基础下CFG桩复合地基桩土应力比研究[J].探矿工程(岩土钻掘工程),2008,35(2):27-30. |
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| 作者姓名： | 曾文伟 吴国华 |
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| 作者单位： | 1. 广东省核工业地质局二九三大队,广东,广州,510800;中国地质大学《武汉》地球科学学院,湖北,武汉,430074
2. 江西省交通科学研究院,江西,南昌,330000 |
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| 摘 要： | 近年来CFG桩复合地基技术在公路工程的软基处理中得到了应用,而在这些工程中路堤是一种柔性基础,与CFG桩复合地基技术的刚性基础假设不同。利用ABAQUS大型通用性有限元软件研究了桩长、桩土模量比、垫层厚度和模量、路堤土模量、桩端土和桩间土模量比对柔性基础下CFG桩复合地基桩土应力比的影响,得出了桩长、桩与桩间土模量对桩土应力比n有很好调控性,垫层刚度对桩土应力比影响不大,垫层效应主要体现在垫层厚度对桩土应力比的影响的结论。
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| 关 键 词： | 柔性基础 复合地基 CFG桩 桩土应力比 垫层 |
| 文章编号： | 1672-7428(2008)02-0027-04 |
| 修稿时间： | 2007年12月27 |
Numerical Analysis on Pile-soil Stress Ratio of CFG Pile Composite Foundation with Flexible Base |
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| ZENG Wen-wei,WU Guo-hua.Numerical Analysis on Pile-soil Stress Ratio of CFG Pile Composite Foundation with Flexible Base[J].Exploration Engineering:Rock & Soil Drilling and Tunneling,2008,35(2):27-30. |
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| Authors: | ZENG Wen-wei WU Guo-hua |
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| Abstract: | Recently CFG pile composite foundation technology is applied in the soft soil foundation of road engineering.However,embankment is regarded as a kind of flexible base in these projects,which is different from the assumption of rigid foundation of CFG pile composite technique.Analysis was made by ABAQUS large general finite element software on the influence of pile length,pile soil modulus ratio,cushion thickness and modulus,embankment soil modulus,modulus ratio of pile-end soil and soil between piles on pile-soil stress ratio of CFG pile composite foundation with flexible base. |
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| Keywords: | flexible base composite foundation CFG pile pile-soil stress ratio cushion |
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