| 膨胀土地层钻孔灌注桩缩径原因及预防措施 |
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| 引用本文： | 代万庆.膨胀土地层钻孔灌注桩缩径原因及预防措施[J].探矿工程,2009,36(11):50-51,75. |
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| 作者姓名： | 代万庆 |
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| 作者单位： | 河南省地勘局第一地质勘查院,河南南阳473000 |
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| 摘 要： | 在膨胀性粘土地层施工钻孔灌注桩,桩身一般会出现缩径情况。通过在膨胀性粘土中施工钻孔灌注桩的工程实践,分析了桩身缩径的成因,论述了＂跳打法＂的施工方案及施工效果,解决了由于粘土地层膨胀导致的钻孔灌注桩缩径的问题。
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| 关 键 词： | 钻孔灌注桩 膨胀性粘土 缩径 “跳打法” |
| 收稿时间： | 2009/6/3 0:00:00 |
| 修稿时间： | 2009/6/3 0:00:00 |
Cause of Hole Shrinkage of Bored-grouting Pile in Expansive Soil and the Prevention Measures |
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| Institution: | No.1 Geological Exploration Institute, Henan Bureau of Geology and Mineral Exploration |
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| Abstract: | Hole shrinkage often occurs while bored-grouting pile is constructed in expansive clay,the cause is analyzed with engineering practice,＂interval construction＂ is discussed with the effect presenting,which solved the hole shrinkage problem. |
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| Keywords: | bored-grouting pile expansive clay hole shrinkage ＂interval construction＂ |
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