| 静压桩沉桩过程中的侧阻退化及成桩后侧阻时效研究 |
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| 引用本文： | 董光辉,张明义.静压桩沉桩过程中的侧阻退化及成桩后侧阻时效研究[J].低温建筑技术,2009,31(3):76-79. |
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| 作者姓名： | 董光辉 张明义 |
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| 作者单位： | 1. 同济大学,地下建筑与工程系,上海,200092
2. 青岛理工大学土木工程学院,山东,青岛,266033 |
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| 摘 要： | 首先对侧阻的退化机理进行了分析，随后提出了考虑侧阻退化的静压桩沉桩阻力计算公式，通过实例分析得出该方法模拟结果较好，但桩上部的预测值都大于压桩力而端部压桩力大于预测值。最后通过实例说明静压桩在砂土中也存在时间效应，指出砂土中承载力时效问题主要也是侧阻的时间效应并从二个方面对其时效机理进行了分析。
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| 关 键 词： | 静压桩 侧阻退化 时效 |
FRICTION FATIGUE UNDER INSTALLATION AND TIME-RELATED INCREASE IN SHAFT CAPACITIES OF JACKED PILE |
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| DONG Guang-hui,ZHANG Ming-yi.FRICTION FATIGUE UNDER INSTALLATION AND TIME-RELATED INCREASE IN SHAFT CAPACITIES OF JACKED PILE[J].Low Temperature Architecture Technology,2009,31(3):76-79. |
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| Authors: | DONG Guang-hui ZHANG Ming-yi |
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| Affiliation: | 1.Department of Geotechnical Engineering;Tongji University;Shanghai 200092;China;2.Department of Civil Engineering;Qingdao Technology University;Shandong Qingdao 266033;China |
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| Abstract: | This paper analyzed fiction fatigue mechanism,and presented a new method calculating penetration resistance.Example shows that it is reasonable and useful,but the calculation value is greater than the test's.An analysis of the case example indicates the long-term set-up of jacked piles in sand;it shows the increase of the bearing capacity of pile in sand results from the increase of the pile side friction and presents set-up mechanism. |
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| Keywords: | jacked pile fiction fatigue set-up |
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