| 桩承载力时效对桩土相互作用及沉降的影响分析 |
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| 引用本文： | 郑刚,任彦华.桩承载力时效对桩土相互作用及沉降的影响分析[J].岩土力学,2003,24(1):65-69. |
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| 作者姓名： | 郑刚 任彦华 |
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| 作者单位： | 1．天津大学 土木工程系，天津 300072； 2. 天津市勘察院，天津，300191 |
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| 摘 要： | 对软土中两根47 m长灌注桩分别在成桩28 d和1 750 d后进行了承载力试验，其极限承载力提高幅度达到30％左右。分析了单桩承载力随时间提高(称为时效)的机理，提出了单桩承载力时效对桩筏基础桩土相互作用影响的分析方法，并结合工程实例进行了分析。
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| 关 键 词： | 单桩承载力 桩筏基础 桩土相互作用 沉降 |
| 文章编号： | 1000-7598-(2003)01-0065-06 |
| 收稿时间： | 2001-07-27 |
Effects of time-effect of pile's bearing capacity on pile-soil interaction and on settlement of pile-raft foundation |
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| ZHENG gang ,REN Yan-hua.Effects of time-effect of pile''''s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation[J].Rock and Soil Mechanics,2003,24(1):65-69. |
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| Authors: | ZHENG gang REN Yan-hua |
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| Institution: | 1．Dept. of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. Institute of Geotechnical Investigation of Tianjin, Tianjin 300191, China |
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| Abstract: | Pile loading tests of two bored piles of length 47m in soft soil are carried out for 28 days and 1 750 days after they are constructed. In-situ test shows that the ultimate bearing capacity of these two single piles increased about 30 %. The mechanism of time-effect of bearing capacity of pile is analyzed; and method of analyzing the effects of the time-effect of a pile’s bearing capacity on pile-soil interaction of pile-raft foundation is discussed with an engineering example. |
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| Keywords: | bearing capacity of single pile pile-raft foundation pile-soil interaction settlement |
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