| 考虑降水的基坑开挖卸荷对坑底桩的影响 |
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| 引用本文： | 李镜培,王笑.考虑降水的基坑开挖卸荷对坑底桩的影响[J].工程勘察,2011(9):5-8. |
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| 作者姓名： | 李镜培 王笑 |
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| 作者单位： | 同济大学岩土及地下工程教育部重点实验室;同济大学地下系; |
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| 基金项目： | 上海市科委“科技创新行动计划”资助项目(No.09231200900) |
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| 摘 要： | 降水与深基坑开挖卸荷是影响坑底工程桩工作性状的重要因素,应用有限元分析软件ABAQUS建立基坑开挖二维模型,综合考虑了降水及卸荷对坑底工程桩的影响,得出如下结论：降水能有效减少开挖引起的工程桩回弹及坑底土体回弹;前期降水增大了桩身轴向压应力而开挖卸荷使桩身拉应力逐渐增大;降水导致地基固结沉降从而使桩侧产生负摩阻力,降水...
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| 关 键 词： | 降水开挖 坑底回弹 负摩阻力 坑底桩 |
Research on effect of dewatering and excavation on pile |
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| Li Jingpei,Wang Xiao.Research on effect of dewatering and excavation on pile[J].Geotechnical Investigation & Surveying,2011(9):5-8. |
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| Authors: | Li Jingpei Wang Xiao |
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| Affiliation: | Li Jingpei1,2,Wang Xiao1,2(1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China,2.Department of Geotechnical Engineering,China) |
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| Abstract: | Both the dewatering and deep excavation have a significant influence on the piles.Based on the general commercial software ABAQUS,2D models considering the effect of dewatering and excavation were established.The results show that during dewatering the bottom rebound was reduced effectively and the axial compressive stress of piles increased.The tensile stress of pile increased due to excavation.The consolidation settlement of soil because of dewatering made the negative skin friction of pile increased.The ... |
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| Keywords: | dewatering and excavation bottom rebound negative skin friction of pile pile |
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