| 过湿黄土砾石桩复合地基处理的试验研究 |
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| 引用本文： | 彭小云,折学森,宫治国.过湿黄土砾石桩复合地基处理的试验研究[J].力学学报,2006,14(3):370-375. |
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| 作者姓名： | 彭小云 折学森 宫治国 |
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| 作者单位： | 1. 长安大学特殊地区公路工程教育部重点实验室,西安710064;
2. 中建八局工业设备安装公司,西安710064;
3. 武警工程学院建筑工程系,南京210046 |
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| 基金项目： | 陕西省交通厅科技项目(03-18k) |
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| 摘 要： | 过湿黄土是指含水量较高的黄土。过湿黄土土体含水量高、饱和度大、压缩性高以及土体浸水后强度显著降低。其性质随土体含水量变化而变化,给工程建设带来一定影响。本文结合某高速公路过湿黄土地基砾石桩复合地基的工程实践以及原位测试,分析加固前后复合地基的强度和变形,研究过湿黄土的力学特性。并总结不同成桩工艺对过湿黄土复合地基的加固适用性以及地基处理要点。
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| 关 键 词： | 过湿黄土 砾石桩复合地基 原位测试 |
| 收稿时间： | 2005-11-15 |
| 修稿时间： | 2005-12-31 |
FIELD EXPERIMENTAL STUDIES ON COMPOSITE FOUNDATION WITH GRAVEL PILES IN HIGHLY WETTED LOESS |
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| PENG Xiaoyun,SHE Xuesen,GONG Zhiguo.FIELD EXPERIMENTAL STUDIES ON COMPOSITE FOUNDATION WITH GRAVEL PILES IN HIGHLY WETTED LOESS[J].chinese journal of theoretical and applied mechanics,2006,14(3):370-375. |
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| Authors: | PENG Xiaoyun SHE Xuesen GONG Zhiguo |
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| Institution: | 1. Key Lab.of Education Ministry to Highway Engineering in Special Region,Chang′an University,Xi′an 710064;
2. Civil Department,Engineering College of Armed Police Force,Xi′an 710086;
3. Industrial Equipment Installation Company,China Construction Eighth Engineering Division,Nanjing 210046 |
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| Abstract: | Highly wetted loess is a kind of loess with high water content,degree of saturation and compressibility.Its mechanical strength decreases apparently when water seeps in.Its mechanical property varies with the water content,which will influence the project construction.In this paper,on the basis of several kinds of in-situ testing and the construction of gravel pile composite foundation in highly wetted loess subgrade treatment in an express way project,the strength and deformation of the subgrade before and after treatment are analyzed,the mechanical properties of the highly wetted loess are further studied.Finally the applicability of various construction technology of gravel pile composite foundation treatment in highly wetted loess as well as the key points in foundation treatment are discussed.The presented results are good reference for similar engineering practice. |
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| Keywords: | Highly wetted loess Gravel Piles Composite Foundation Field experiments |
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