| 后压浆钻孔灌注桩单桩竖向承载力特性研究 |
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| 引用本文： | 胡春林,李向东,吴朝晖. 后压浆钻孔灌注桩单桩竖向承载力特性研究[J]. 岩石力学与工程学报, 2001, 20(4): 546-550 |
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| 作者姓名： | 胡春林 李向东 吴朝晖 |
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| 作者单位： | 1. 武汉理工大学岩土与环境工程研究所,武汉,430070
2. 武汉市建工质量监督站,武汉,430022 |
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| 基金项目： | 湖北省建设科技攻关(G200013,G9907)资助项目. |
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| 摘 要： | 基于72个工地186要有静载试桩的统计资料，分析了术地端、桩侧压浆对钻孔灌注桩的增强加固机理，深入研究了后压浆钻孔灌注桩单桩竖向承载力特性。利用静载试桩结果，统计出后压浆桩极限承载力增幅值及极限端阻力增强系数的频数分布规律，提出了后压浆桩单桩极限承载力的实用计算公式。
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| 关 键 词： | 钻孔灌注桩 后压浆 竖后承载力 统计分析 |
| 文章编号： | 1000-6915(2001)04-0546-05 |
| 修稿时间： | 2000-11-06 |
STUDY OF VERTICAL BEARING CAPACITY FOR POSTGROUTING BORED PILE |
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| Hu Chunlin,Li Xiangdong,Wu Zhaohui. STUDY OF VERTICAL BEARING CAPACITY FOR POSTGROUTING BORED PILE[J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(4): 546-550 |
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| Authors: | Hu Chunlin Li Xiangdong Wu Zhaohui |
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| Abstract: | Based on the statistical data from the static load tests for 186 piles in 72 construction sites, the rein- forcement mechanism of bored piles by postgrouting at pile end and pile lateral is analyzed, and the characteristics of vertical bearing capacity of postgrouting bored pile are studied. By using the static load testing results, the fre- quency distribution curves of the increased value of limiting bearing capacity and the strengthening parameters of the limiting end resistance of piles are obtained. At last, a pracical formula is proposed to calculate the vertical limiting bearing capacity of this kind of piles. |
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| Keywords: | bored pile postgrouting bearing capacity statistical analysis |
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