| 粉喷桩单桩承载力与龄期的关系研究 |
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| 引用本文： | 杜海金,张建新,吴冬云,安新正.粉喷桩单桩承载力与龄期的关系研究[J].岩土力学,2002,23(1):111-115. |
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| 作者姓名： | 杜海金 张建新 吴冬云 安新正 |
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| 作者单位： | 河北建筑科技学院建筑工程系,河北,邯郸,056038 |
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| 摘 要： | 以100余根粉喷桩单桩载荷试验和水泥土强度试验资料为基础，运用桩与土变形的弹塑性计算模型和复合地基理论，分析了同一场区不同龄期单桩承载力的关系，探讨了桩侧极限摩阻力与桩土发生塑性变形大小的关系，得了14d与28d龄期单桩承载力二者的经验公式，该公式经试验验证具有实用价值，为缩短粉喷桩的试桩周期提供了一种简单的计算方法。
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| 关 键 词： | 粉喷桩 单桩 承载力 龄期 |
| 文章编号： | 1000-7598-(2002)01-0111-05 |
| 修稿时间： | 2001年1月18日 |
Research on the relationship of the bearing capacity to age of cement-soil single pile |
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| DU Hai-jin,ZHANG Jian-xin,WU Dong -yun,AN Xin-zhen.Research on the relationship of the bearing capacity to age of cement-soil single pile[J].Rock and Soil Mechanics,2002,23(1):111-115. |
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| Authors: | DU Hai-jin ZHANG Jian-xin WU Dong -yun AN Xin-zhen |
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| Abstract: | On the basis of testing data of the bearing capacity of more than one hundred cement-soil single piles and cement soil strength the elastoplastic calculation model of the pile-soil deformation and the composite foundation theory were applied in present paper.The relationships of the bearing capacity of single pile belonging to different ages and to the same site were analyzed.And the relationship of the lateral skin friction along the pile and the pile-soil plastic deformation were studied.The empirical formula of calculating capacity of the bearing with an age of 14d and28d was gained.The formula is proved to be of practical value.A method to shorten the testing time of cement-soil pile is provided. |
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| Keywords: | cement-soil pile elasto plastic model bearing capacity age |
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