| 饱和软土中钻孔灌注桩竖向承载力时效分析 |
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| 引用本文： | 陈兰云,陈云敏,张卫民.饱和软土中钻孔灌注桩竖向承载力时效分析[J].岩土力学,2006,27(3):471-474. |
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| 作者姓名： | 陈兰云 陈云敏 张卫民 |
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| 作者单位： | 1.金华学院 建筑工程系，浙江 金华 321017；2.浙江大学 岩土工程研究所，杭州 310027 |
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| 摘 要： | 针对目前饱和软土中钻孔灌注桩竖向承载力时间效应研究不多的情况，结合现场试验对饱和软土钻孔灌注桩承载力时间效应机理进行了分析。结果表明：随着时间增长，桩周被扰动土的结构强度逐渐恢复，摩阻力逐渐增加，钻孔灌注桩竖向承载力呈现一定的时效性，但不宜扩大桩竖向承载力的时效作用，时间效应可对桩竖向极限承载力产生10 %以上的影响。
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| 关 键 词： | 软土 钻孔灌注桩 时间效应 极限承载力 |
| 文章编号： | 1000-7598-（2006）03-0471-04 |
| 收稿时间： | 2005-01-13 |
| 修稿时间： | 2005-08-10 |
Time-effect on vertical bearing capacity of single drilled grouting pile in saturated soft soil |
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| CHEN Lan-yun,CHEN Yun-min,ZHANG Wei-min.Time-effect on vertical bearing capacity of single drilled grouting pile in saturated soft soil[J].Rock and Soil Mechanics,2006,27(3):471-474. |
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| Authors: | CHEN Lan-yun CHEN Yun-min ZHANG Wei-min |
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| Institution: | 1.Departement of Architechture Engineering, Jinhua College, Jinhua 321017, China; 2.Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The research of time-effect on vertical bearing capacity of single drilled grouting pile in saturated soft soil is few at present. Through analyzing the mechanism of time-effect on bearing capacity of single drilled grouting pile in saturated soft soil and in-situ test, it shows that the frame intensity of the disturbed soil around the pile come back lentamente with the time went by. The friction between the soil and the pile enhanced slowly, it shows stated time-effect. The research indicates that the time-effect on vertical bearing capacity of single drilled grouting pile in saturated soft soil can’t be enlarged at actual test, the time-effect can affect more than 10 percent of the ultimate bearing capacity of single pile. |
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| Keywords: | soft soil drilled grouting pile timeweffect ultimate bearing capacity |
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