| 维持荷载作用下单桩沉降的时间效应 |
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| 引用本文： | 程泽海,陈云敏,夏建中.维持荷载作用下单桩沉降的时间效应[J].岩土力学,2006,27(9):1571-1574. |
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| 作者姓名： | 程泽海 陈云敏 夏建中 |
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| 作者单位： | 1. 浙江科技学院,建筑工程学院,杭州,310012
2. 浙江大学,建筑工程学院,杭州,310027 |
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| 摘 要： | 研究单桩在不同维持加载时间的桩顶荷载-沉降关系曲线,揭示了不同载荷比条件下桩侧和桩端下土体中的初始超静孔压分布,分别讨论了土的固结与蠕变特性对单桩沉降的影响.分析表明,土体的固结对单桩的维持载荷试验的影响很小,桩身上的荷载主要以剪应力的形式传递到周围土体中.土体的蠕变对单桩沉降的影响与土的超固结比或沉积时间有关,桩顶沉降中的蠕变部分随超固结比的增大而减小.
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| 关 键 词： | 单桩 固结 蠕变 维持荷载 |
| 文章编号： | 1000-7598-（2006）09-1571-04 |
| 收稿时间： | 2005-03-03 |
| 修稿时间： | 2005-03-03 |
Time effect of settlement for single pile under vertical sustained loading |
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| CHENG Ze-hai,CHEN Yun-min,XIA Jian-zhong.Time effect of settlement for single pile under vertical sustained loading[J].Rock and Soil Mechanics,2006,27(9):1571-1574. |
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| Authors: | CHENG Ze-hai CHEN Yun-min XIA Jian-zhong |
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| Institution: | 1.School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310012, China; 2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | At different times of sustained loading, the single pile tip load-settlement curve was analyzed by finite element method in saturated soil, considering the soil consolidation and creep. The initial pore pressure around the single pile is displayed. The influence of consolidation and creep on the pile settlement was evaluated. The results show that the influence of the soil consolidation on the single pile displacement is little. And the load is mainly transferred to the soil essentially by shear. The creep part of the pile settlement is related to the over consolidation ratio (OCR) degree of the soil. |
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| Keywords: | single pile consolidation creep sustained loading |
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