| 钻孔挤密桩处理强湿陷性黄土地基试验研究 |
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| 引用本文： | 刘志伟,申汝涛.钻孔挤密桩处理强湿陷性黄土地基试验研究[J].岩土力学,2009,30(Z2):339-343. |
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| 作者姓名： | 刘志伟 申汝涛 |
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| 作者单位： | 西北电力设计院，西安710032 |
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| 摘 要： | 挤密桩法用于处理湿陷性黄土地基，可有效地消除土的湿陷性和提高地基承载力。某拟建电厂工程针对强湿陷性黄土地基，采用钻孔挤密桩（DDC工法）复合地基的处理方法开展现场试验研究。通过采用载荷试验、标准贯入试验等原位测试方法，对桩间土、桩体及复合地基的承载性能、变形参数进行了评价和分析，重点进行了自然工况和浸水工况下的对比研究，对地基处理效果进行了综合评价
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| 关 键 词： | 湿陷性黄土 钻孔挤密桩（DDC工法） 复合地基 原体试验 |
| 收稿时间： | 2009-08-17 |
Field tests on pre-bored compaction lime-soil pile (down-hole dynamic compaction method) to improve serious collapsible loess |
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| LIU Zhi-wei,SHEN Ru-tao.Field tests on pre-bored compaction lime-soil pile (down-hole dynamic compaction method) to improve serious collapsible loess[J].Rock and Soil Mechanics,2009,30(Z2):339-343. |
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| Authors: | LIU Zhi-wei SHEN Ru-tao |
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| Institution: | Northwest Electric Power Design Institute, Xi’an 710032, China |
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| Abstract: | The compaction method used to control the subsoil of collapsible loess can eliminate collapsibility and improve bearing capacity of loess effectively. For serious collapsible loess in a power plant to be constructed, pre-bored compaction lime-soil piles (down-hole dynamic compaction method) field test studies were carried out. After the construction of the test piles were finished, a lot of in-situ tests including plate loading test, standard penetration test, etc., were used to evaluate the bearing capacity of the soil between piles, the piles and the composite foundation, and to test the deformation parameters. Especially, comparative research between natural status and soaked status of composite foundation as well as comprehensive evaluation of effects of ground treatment were carried out. |
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| Keywords: | collapsible loess pre-bored compaction lime-soil piles (down-hole dynamic compaction method) composite foundation prototype test |
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