| 柔性基础下复合地基桩土应力比现场试验研究 |
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| 引用本文： | 李国维,杨涛.柔性基础下复合地基桩土应力比现场试验研究[J].岩土力学,2005,26(2):265-269. |
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| 作者姓名： | 李国维 杨涛 |
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| 作者单位： | 1. 河海大学,岩土工程研究所,江苏,南京,210098
2. 上海理工大学,城市建设与环境工程学院,上海,200093 |
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| 摘 要： | 在复合地基设计中桩土应力比是一个很重要的参数。通过揭普高速公路路堤下复合地基桩土应力比的现场试验,获得了柔性基础下桩土应力比数值及其随荷载和固结时间的变化规律。现场测试结果表明,柔性基础下桩土应力比要比刚性基础下小得多,它随荷载增加先减小后增大呈波浪形变化,其研究成果可为路堤下复合地基设计提供有益参考。
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| 关 键 词： | 柔性基础 刚性基础 复合地基 桩土应力比 |
| 文章编号： | 1000-7598-(2005)02-0265-05 |
| 收稿时间： | 2003-12-02 |
| 修稿时间： | 2003年12月2日 |
Field experimental study on pile-soil stress ratio of composite ground under flexible foundation |
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| LI Guo-wei,YANG Tao.Field experimental study on pile-soil stress ratio of composite ground under flexible foundation[J].Rock and Soil Mechanics,2005,26(2):265-269. |
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| Authors: | LI Guo-wei YANG Tao |
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| Institution: | 1. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China； 2. College of Urban Construction and Environment Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | Pile- soil stress ratio is an important parameter in the design of the composite ground. In this paper, the field measurements of the pile-soil stress ratio of the composite ground with DCM pile under embankment are carried out for Jieyang-Puning Expressway in Guangdong Province. The magnitude of the pile-soil stress ratio and its variation with the load and the consolidation time are measured. The measured results show that the measured pile-soil stress ratio is much more less than that under rigid foundation; it varies with load from decrease to increase first, then in the form of wave. The conclusion drawn can provide valuable preference for the design of the composite ground under embankment. |
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| Keywords: | flexible foundation rigid foundation composite ground pile-soil stress ratio |
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